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  • Male  (872)
  • Cells, Cultured  (259)
  • Amino Acid Sequence
  • Mutation
  • American Association for the Advancement of Science (AAAS)  (1,254)
  • Springer  (17)
  • FISON  (1)
  • International Union of Crystallography
  • Taylor & Francis
  • 2020-2022  (1)
  • 1980-1984  (938)
  • 1975-1979  (333)
  • 1950-1954
  • 1940-1944
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  • 1
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    Observation on the sex ratio, fecundity, egg size and gonadosomatic index of grey mullet (Mugil cephalus) from high brackish tropical lagoon (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24627 | 19325 | 2018-05-22 06:26:49 | 24627 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The 2661 specimens of the striped mullet, Mugil cephalus L. used for this study, were collected from high brackish lagoon in southwest Nigeria for 24 months. The size of the 2661 specimens of M. cephalus used for this study ranged from 1.7- 29.5cm standard length (total lenght 1.9 to 39.0cm). The sex ratio for M. cephalus was 1:0.53 and this showed a statistically significant (p〈0.05) dominance of the male over the females for the size range. The fecundity estimates varied from 635,568- 1,520,185 and was positively correlated to the fish and weight. Oocyte diameter averaged 409.64 ~c 40.67pm and this is indicative of an early stage of gonad maturation of the specimens in the lagoon before final spawning occurred. The GSI indicated that spawning activity occurred from December to May in the open ocean.
    Description: Includes: 28 references.
    Keywords: Ecology ; Fisheries ; Mugil cephalus ; ASE ; Nigeria ; Lagos Lagoon ; Mature ; Spawning ; Specimen ; Male ; Female ; brackishwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 241-246
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  • 2
    Electronic Resource
    Electronic Resource
    Codon usage in muscle genes and liver genes (1983)
    Springer
    Journal of molecular evolution 19 (1983), S. 214-218 
    Details
    ISSN: 1432-1432
    Keywords: Codon: anticodon adaptation ; Mutation ; Selection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Synonymous codon usage frequencies, derived from cDNA clone sequences, were compared for several sets of vertebrate genes. Gene sets as diverse as those expressed in avian skeletal muscle and in mammalian liver showed similar patterns of synonymous codon usage. There were no significant differences suggesting tissue-specific co-adaptation of codon usage patterns and tRNA anticodon profiles. The results indicate a consensus codon usage pattern for vertebrate genes which is largely independent of taxonomic class, tissue of expression, and the cellular fate and rate of evolution of the encoded proteins. Certain elements of the consensus codon usage pattern indicate that it is the product of natural selection and not simply a mutational equilibrium among phenotypically equivalent synonyms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02099968
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  • 3
    Electronic Resource
    Electronic Resource
    Sterols of male and female compound inflorescences of Zea mays L. (1976)
    Springer
    Planta 133 (1976), S. 89-93 
    Details
    ISSN: 1432-2048
    Keywords: Zea mays ; Inflorescences ; Male ; Female ; Sterols
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A comparison has been made between the sterols of male and female inflorescences and of pollen from Zea mays. The female inflorescence was shown to contain cholesterol, 24-methylcholesterol, 24-ethyl-5,22-cholestadien-3β-ol, 24-ethylcholesterol and (28Z)-24-ethylidenecholesterol. Themale inflorescence contained the same five compounds together with 24-methylenecholesterol. Pollen contained 24-methylenecholesterol as its main sterol together with lesser amounts of cholesterol, 24-ethylcholesterol, (28Z)-24-ethylidenecholesterol, 24-methylene-5α-cholest-7-en-3β-ol and 4α-methyl-24-methylene-5α-cholest-7-en-3β-ol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00386011
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  • 4
    Electronic Resource
    Electronic Resource
    Variation of mutation and recombination frequencies over a range of thymidylate concentrations in a diploid thymidylate auxotroph (1983)
    Springer
    Current genetics 7 (1983), S. 399-402 
    Details
    ISSN: 1432-0983
    Keywords: Thymidylate auxotrophy ; Mutation ; Recombination
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A diploid yeast thymidylate auxotroph was grown under conditions of thymidylate stress ranging from depletion to excess levels of the nucleotide. High concentrations of thymidylate were mutagenic and recombinagenic whereas starvation for thymine nucleotides was recombinagenic and only slightly mutagenic. These results are discussed in relation to possible mutagenic and recombinagenic mechanisms of nucleotide pool imbalances.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00445881
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  • 5
    Electronic Resource
    Electronic Resource
    Some ring-trap mutants of the fungusDactylella brochopaga drechsler (1978)
    Springer
    Archives of microbiology 117 (1978), S. 221-226 
    Details
    ISSN: 1432-072X
    Keywords: Nematophagous fungus ; Giant functional traps ; Mutation ; Development
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Mutagenesis with nitrosoguanidine yielded two classes of ring trap mutants in the predacious HyphomyceteDactylella brochopaga: strains which could make no traps and those with a proportion of giant, functional traps. A third strain, derived from a trapless strain made abnormally small functional traps. The giant traps are described, together with developmental abnormalities they sometimes display. The characteristics of the chief mutant strains are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00738539
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  • 6
    Electronic Resource
    Electronic Resource
    Spontaneous pigment mutants of Anacystis nidulans selected by growth under far-red light (1980)
    Springer
    Archives of microbiology 124 (1980), S. 143-148 
    Details
    ISSN: 1432-072X
    Keywords: Anacystis ; Blue-green algae ; Cyanobacteria ; Mutation ; Pigments ; Red light ; Synecaococcus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Under far-red (〉650 nm) illumination Anacystis nidulans grows poorly and develops a low chlorophyll content. During continued culture over many generations there are increases in growth rate and in the chlorophyll/phycocyanin ratio, usually occurring in concomitant and stepwise fashion. From such selection cultures six clones have been established which differ from the parent in pigment content and show improved growth rate in far-red light. From the evidence at hand the six clones are presumed to be spontaneous mutants selected under the photosynthetically restrictive condition of far-red illumination.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00427719
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  • 7
    Electronic Resource
    Electronic Resource
    Isolation of gas vacuole-less mutants of the blue-green alga Anabaenopsis raciborskii (1976)
    Springer
    Archives of microbiology 111 (1976), S. 195-196 
    Details
    ISSN: 1432-072X
    Keywords: Mutation ; Blue-green alga ; Anabaenopsis raciborskii ; Gas vacuole ; Nitrogen fixation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract From a bloom forming blue-green alga, Anabaenopsis raciborskii, spontaneous mutants, which had lost the ability to form gas vacuoles have been isolated; the mutant frequency was 4.8×10-3. The filaments of gas vacuole-less mutants settled at the bottom of flasks in liquid culture media unlike the parent alga. The growth and nitrogen fixation were comparatively poor in the mutants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00446569
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  • 8
    Electronic Resource
    Electronic Resource
    Sterols of male and female flowers of Cucumis sativus (1977)
    Springer
    Planta 134 (1977), S. 115-117 
    Details
    ISSN: 1432-2048
    Keywords: Female ; Flowers ; Male ; Meiosis ; Sterols
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Sterols of male and female flowers of Cucumis sativus L. were similar in composition. The principal compound was 24ξ-ethyl-5α-cholesta-7,22-dien-3β-ol. Five other 5α-Δ7 were detected: 24ξ-methyl-7-ene, 24ξ-ethyl-7-ene, 24-ethyl-7,24(28)Z-diene, 24ξ-ethyl-7,25-diene and 24ξ-ethyl-7,22,25-triene. Small amounts of Δ5 (cholesterol, 24ξ-methylcholesterol and 24ξ-ethylcholesterol) were detected. The possible significance of these sterols is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00384959
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  • 9
    Electronic Resource
    Electronic Resource
    On the survival probability of a slightly advantageous mutant gene with a general distribution of progeny size—A branching process model (1981)
    Springer
    Journal of mathematical biology 12 (1981), S. 355-362 
    Details
    ISSN: 1432-1416
    Keywords: Branching process ; Mutation ; Extinction ; Progeny size
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract A branching process method is employed to study the survival probability of a slightly advantageous mutant gene with a general distribution of progeny size in a large population. A counter-example to a classic proposition is given. A somewhat weaker result is proved.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00276922
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  • 10
    Electronic Resource
    Electronic Resource
    Migration and mutation in stochastic models of gene frequency change. II. Stochastic migration with a finite number of islands (1981)
    Springer
    Journal of mathematical biology 13 (1981), S. 95-104 
    Details
    ISSN: 1432-1416
    Keywords: Stochastic migration ; Island model ; Mutation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract Recurrence relations are derived for stochastic migration in the island model with a finite number of subpopulations. Two models are considered, one involving a constant probability that each individual breeding in a given colony has migrated from another, the other assuming the exchange of fixed numbers of migrants between colonies each generation. The equilibrium solutions are expressed in terms of two measures of genetic differentiation among subpopulations, one similar to Nei's measure of genetic distance, and the other closely related to the coefficient of kinship. Both measures are shown to be necessary for a complete description of population structure. The predictions of the models of stochastic migration are compared with the corresponding classical model of deterministic migration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00276868
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  • 11
    Electronic Resource
    Electronic Resource
    Characterization of anther differentiation in cytoplasmic male sterile maize using a specific isozyme system (esterase) (1984)
    Springer
    Theoretical and applied genetics 67 (1984), S. 469-473 
    Details
    ISSN: 1432-2242
    Keywords: Maize ; Pollen anther ; Esterase ; Male ; sterility ; Restorer genes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary During anther development, characterized in maize plants with N cytoplasm, certain esterase isozymes in non-microspore cells decrease in amount with anther age and new isozymes appear in the developing microspores. In anthers from male sterile plants with cms T or cms C cytoplasm, neither of these changes in esterase patterns occurred. In anthers from plants with cms S cytoplasm, the decrease in the esterases of non-microsporogenous cells was observed but not the appearance of microspore esterases. In lines carrying cms S cytoplasm and nuclear restorer genes, esterase changes during anther development were as in normal fertile anthers. These results are discussed with respect to the phenomenon of cytoplasmic male sterility in the different maize genotypes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00263415
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  • 12
    Electronic Resource
    Electronic Resource
    Increasing grain protein content of hard red winter wheat (Triticum aestivum L.) by mutation breeding (1983)
    Springer
    Theoretical and applied genetics 65 (1983), S. 41-46 
    Details
    ISSN: 1432-2242
    Keywords: Triticum aestivum ; Wheat ; Protein ; Mutation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Poor adaptability or functional quality of much germplasm used for breeding high-protein hard red winter wheats prompted mutagenesis as an alternative means of increasing grain protein content. Four hard red winter wheat genotypes — KS644 (‘Triumph// Concho/Triumph’), ‘Kaw’, ‘Parker’, and ‘Shawnee’ — were treated with 0.40 M ethyl methanesulfonate (EMS). Advanced lines (M8-M10) were selected that had a 3-year mean grain protein advantage of 0.7% to 2.0% over controls. Increased grain protein content was generally associated with decreased grain yield and kernel weight, but some high-protein mutant lines had yields or kernel weights similar to those of original genotypes. Changes in height and lodging induced by EMS were generally favorable, most mutants being shorter and lodging less than controls, but blooming date was generally delayed, a deleterious change. One line also changed from resistant to segregating for wheat soil-borne mosaic virus. Mutant lines might be utilized in cross-breeding programs, particularly if negative pleiotropic effects and linkages are absent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00276260
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  • 13
    Electronic Resource
    Electronic Resource
    Sequential occurrence of mutations in a growing rice callus (1983)
    Springer
    Theoretical and applied genetics 65 (1983), S. 225-230 
    Details
    ISSN: 1432-2242
    Keywords: Tissue culture ; Mutation ; Sequential mutations ; Rice ; Oryza sativa L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Four mutations for early heading, albina, short culm and sterility were obtained in the progenies of twelve rice plants regenerated from a single callus of a rice seed. Studies on the segregation rates of these mutations revealed that for each mutation a single recessive gene was likely to be involved and that there was no linkage among the genes. The segregation pattern also showed that these mutations were induced in the following sequence: early heading, albina, and short culm and sterility during the stage of callus growth until the beginning of the regeneration of the rice plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00308073
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  • 14
    Electronic Resource
    Electronic Resource
    Population genetics in the American Tropics XVI. Data on partial dominance of recessives in Drosophila willistoni (1982)
    Springer
    Theoretical and applied genetics 61 (1982), S. 183-191 
    Details
    ISSN: 1432-2242
    Keywords: Mutation ; Normalizing-selection ; Lethal-equivalence ; Genetic-load ; Neutral-theory
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Through a series of genetic load studies made on 1) samples of Drosophila willistoni from two sites in Mesitas, Colombia, it was found that the relative contributions to the total, subvital and lethal loads reflect lethal equivalences (B/A) ratios which support more the balancing theory of population structure than the neutralist theory. Moreover, measurements of population size have revealed the existance of very small demes in local populations. Under such conditions we have calculated extremely small lethal equivalence ratios in demes where probably a great deal of consanguinity takes place. We are aware that under these conditions B/A ratios cannot be very good monitors of random load measurements and, therefore, suggest a change in the mathematical formulation that take into consideration the existance of small populations. Furthermore, it appears plausible that the degree of penetrance in the heterozygous condition changes as the population structure changes. We speculate that natural populations may have unknown selective mechanisms capable of guiding unknown dominance modifiers according to the intensity of selection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00273888
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  • 15
    Electronic Resource
    Electronic Resource
    Mutation-selection equilibrium as a possible cause of an interchange chromosome polymorphism in a cultivar of rye, Secale cereale L. (1982)
    Springer
    Theoretical and applied genetics 62 (1982), S. 321-324 
    Details
    ISSN: 1432-2242
    Keywords: Interchange ; Chromosome polymorphism ; Mutation ; Selection ; Equilibrium ; Rye
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A persistent chromosomal polymorphism exists in a population of cultivated rye, Secale cereale (Candela et al. 1979). In order to ascertain the possible causes that maintain it, we have estimated the fitness values of structurally homozygous and heterozygous plants and the mutation rate of spontaneous interchange. The estimates of the selection coefficient against heterozygotes (s=0.15-0.40) and of the mutation rate u=6.12×10−2 support a mutation-selection equilibrium as a likely cause of the interchange chromosome polymorphism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00275095
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  • 16
    Electronic Resource
    Electronic Resource
    Myo-inositol induced growth in ethyl methanesulphonate treated tobacco (1984)
    Springer
    Theoretical and applied genetics 67 (1984), S. 203-205 
    Details
    ISSN: 1432-2242
    Keywords: Ethyl methanesulphonate ; Mutation ; Myo-inositol ; Nicotiana tabacum, tobacco
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Tobacco seeds treated with ethyl methanesulphonate produces mutations as well as physiological growth debility. The addition of myo-inositol to seeds undergoing mutagenic treatment stimulated growth and increased survival of subsequent plants with negligible effect on the mutation frequency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00317035
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  • 17
    Electronic Resource
    Electronic Resource
    Investigations of the seed protein content of several pea genotypes grown in two different years (1978)
    Springer
    Theoretical and applied genetics 53 (1978), S. 181-190 
    Details
    ISSN: 1432-2242
    Keywords: Pisum sativum ; Seed protein content ; Mutation ; Genotype-year-interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Seventeen X-ray and neutron induced mutants of the commercial variety ‘Dippes gelbe Victoria’ were analyzed with regard to their seed protein percentage. The interaction of genotypic and year effects in 1975 (normal weather conditions) and 1976 (extremely hot and dry) was also taken into consideration. To avoid undiscoverable environmental bias, the plants were grown in a nonstandard three-dimensional layout. Biometric analysis was done by using the theory of the general linear model with a formula-processing computer program. In the first year, significant genetically caused differences were found in the material. The bifurcated mutant 157A was especially of considerable interest because an improved protein content was combined with relative good yield. In the second year, no significant differences between the mutants were revealed, but all genotypes showed a similar good protein value of about 27%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00273578
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  • 18
    Electronic Resource
    Electronic Resource
    Modification of symbiotic interaction of pea (Pisum sativum L.) andRhizobium leguminosarum by induced mutations (1984)
    Springer
    Plant and soil 82 (1984), S. 427-438 
    Details
    ISSN: 1573-5036
    Keywords: Mutant ; Mutation ; Nitrate ; Nitrate reductase ; Nodulation ; Pisum sativum L. ; Rhizobium leguminosarum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In pea (Pisum sativum L.), mutants could be induced, modified in the symbiotic interaction withRhizobium leguminosarum. Among 250 M2-families, two nodulation resistant mutants (K5 and K9) were obtained. In mutant K5 the nodulation resistance was monogenic recessive and not Rhizobium strain specific. Out of 220 M2-families one mutant nod3 was found which could form nodules at high nitrate concentrations (15 mM KNO3). This mutant nodulated abundantly with severalRhizobium strains, both in the absence and presence of nitrate. Probably as the result of a pleiotropic effect, its root morphology was also changed. Among 1800 M2-families, five nitrate reductase deficient mutants were obtained and one of them (mutant E1) was used to study the inhibitory effect of nitrate on nodulation and nitrogen fixation. The results of the present investigation show that pea mutants which are modified in their symbiosis withRhizobium leguminosarum, can readily be obtained. The significance of such mutants for fundamental studies of the legume-Rhizobium symbiosis and for applications in plant breeding is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02184280
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  • 19
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    Reversible cerebral atrophy in recently abstinent chronic alcoholics measured by computed tomography scans (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-06-02
    Description: Eight chronic alcoholics received repeated computed tomography scans. Four, who maintained abstinence and functionally improved, showed partially reversible cerebral atrophy. Two nonabstinent patients and two abstinent patients who had completed functional improvement before the first scan showed no change in atrophy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carlen, P L -- Wortzman, G -- Holgate, R C -- Wilkinson, D A -- Rankin, J C -- New York, N.Y. -- Science. 1978 Jun 2;200(4345):1076-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/653357" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aged ; Alcoholism/*pathology/radiography/therapy ; Atrophy ; Brain/*pathology/radiography ; Female ; Humans ; Male ; Middle Aged ; Tomography, X-Ray Computed
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 20
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    Sex pheromone of the tsetse fly: isolation, identification, and synthesis of contact aphrodisiacs (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-08-25
    Description: Sex pheromones isolated from the cuticle of the female tsetse fly, Glossina morsitans morsitans Westwood, release mating behavior in the male fly at ultrashort range or upon contact with baited decoys. Three active components were identified as 15,19-dimethylheptatriacontane, 17,21-dimethylheptatriacontane, and 15,19,23-trimethylheptatriacontane. Chemical and biological comparisons show that the natural and synthetic compounds are identical.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carlson, D A -- Langley, P A -- Huyton, P -- New York, N.Y. -- Science. 1978 Aug 25;201(4357):750-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/675256" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dose-Response Relationship, Drug ; Female ; Male ; Pheromones/*isolation & purification ; Sex Attractants/chemical synthesis/*isolation & purification/pharmacology ; Sexual Behavior, Animal/drug effects ; Tsetse Flies/*analysis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 21
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    Cholinergic vesicles: ability to empty and refill independently of cytoplasmic acetylcholine (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-01-06
    Description: Incubation of minced mouse-forebrain tissues in lithium Krebs solution reduces the acetylcholine content of the vesicular fraction 70 percent without altering that of the cytoplasmic fraction. Depleted vesicular-bound acetylcholine can be restored with newly synthesized acetylcholine (formed from extracellular choline) independently of the cytoplasmic pool. Depletion of vesicular-bound acetylcholine does not facilitate the movement of preformed extracellular acetylcholine into vesicles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carrol, P T -- Nelson, S H -- New York, N.Y. -- Science. 1978 Jan 6;199(4324):85-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology and Toxicology, University of Rhode Island, Kingston, RI 02881, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17569492" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholine/*metabolism ; Animals ; Cholinesterase Inhibitors/pharmacology ; Cytoplasm/*metabolism ; Cytoplasmic Vesicles/drug effects/*metabolism ; Lithium Compounds/pharmacology ; Male ; Mice ; Paraoxon/pharmacology ; Prosencephalon/drug effects/*metabolism/ultrastructure
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 22
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    Dieldrin-induced mortality in an endangered species, the gray bat (Myotis grisescens) (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-03-24
    Description: Brains of juvenile gray bats, Myotis grisescens, found dead beneath maternity roosts in two Missouri caves contained lethal concentrations of dieldrin. One colony appeared to be abnormally small, and more dead bats were found a year after the juvenile bats had been collected. This is the first report to link the field mortality of bats directly to insecticide residues acquired through the food chain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clark, D R Jr -- LaVal, R K -- Swineford, D M -- New York, N.Y. -- Science. 1978 Mar 24;199(4335):1357-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/564550" target="_blank"〉PubMed〈/a〉
    Keywords: Aldrin/adverse effects ; Animals ; Body Weight ; Brain Chemistry ; *Chiroptera ; Dieldrin/*adverse effects/analysis ; Environmental Exposure ; Female ; Lactation ; Male ; Missouri ; Pesticide Residues ; Pregnancy
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 23
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    Rabies viruses increase in virulence when propagated in neuroblastoma cell culture (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-03-10
    Description: Several strains of attenuated rabies virus lacking the capacity to kill adult mice acquired a high lethal potential for mice after one to five serial passages in murine or human neuroblastoma cells. The virulence acquired after passage in neuroblastoma cells is a stable genetic trait retained during subsequent passage of viruses in nonneuroblastoma cell systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clark, H F -- New York, N.Y. -- Science. 1978 Mar 10;199(4333):1072-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/628831" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Cells, Cultured ; Mice ; Neuroblastoma/*microbiology ; Neurons/microbiology ; Rabies Vaccines/toxicity ; Rabies virus/genetics/*pathogenicity ; Vaccines, Attenuated/toxicity ; Virus Replication
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  • 24
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    Murine lymphoma-induced immunosuppression: requirement for direct tumour cell contact (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-04-07
    Description: The FBL-3 lymphoma cell line caused impaired antibody formation in vivo when injected into mice intraperitoneally, and in vitro when added to normal syngeneic spleen cells immunized in vitro with sheep erythrocytes. Immunosuppression occurred only when intact viable tumor cells were cocultivated with the normal spleen cells. As few as 10(5) FBL-3 cells, when added to 5 X 10(6) normal cells, impaired antibody formation. However, cell-free extracts of filtrates from even much larger numbers of tumor cells did not affect antibody formation, either in vitro or in vivo. Heating the tumor cells at 56 degrees C or irradiation with as little as 1000 rads completely abolished immunosuppressive activity, both in vitro and in vivo. Separation of viable tumor cells from target antibody-forming cells by cell-impermeable membranes prevented immunosuppression, showing that direct cell-to-cell contact is required for immunosuppression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cimprich, R S -- Specter, S -- Friedman, H -- New York, N.Y. -- Science. 1978 Apr 7;200(4337):60-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/635572" target="_blank"〉PubMed〈/a〉
    Keywords: *Antibody Formation ; Cell Communication ; Cells, Cultured ; *Immunosuppression ; Lymphoma/*immunology ; Neoplasms, Experimental/immunology
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    Rejection of male skin grafts by splenectomized female mice (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-04-21
    Description: Female mice of the C3H strain normally do not reject skin grafts from males of the same strain; however, 40 percent of splenectomized C3H female mice completely rejected C3H male skin grafts applied 2 weeks later. All splenectomized females showed at least transitory signs of graft rejection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coons, T A -- Goldberg, E H -- New York, N.Y. -- Science. 1978 Apr 21;200(4339):320-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/345443" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Female ; *Graft Rejection ; *Histocompatibility Antigens ; Immunosuppression ; Male ; Mice ; Mice, Inbred C3H/immunology ; Skin Transplantation ; Spleen/*immunology ; Transplantation, Homologous ; Y Chromosome
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  • 26
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    Tricyclic antidepressants: long-term treatment increases responsivity of rat forebrain neurons to serotonin (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-12-22
    Description: Long-term treatment of rats with clinically effective tricyclic antidepressant drugs induced a selective increase in the inhibitory response of forebrain neurons to serotonin applied by microiontophoresis. Long-term administration of some related drugs which lack antidepressant efficacy failed to induce such a change. The enhanced response to serotonin induced by the clinically active tricyclic drugs took 1 to 2 weeks to develop, a time course which correlates with the delayed onset of therapeutic effects in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉de Montigny, C -- Aghajanian, G K -- New York, N.Y. -- Science. 1978 Dec 22;202(4374):1303-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/725608" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials/drug effects ; Animals ; Antidepressive Agents, Tricyclic/*pharmacology ; Decerebrate State ; Drug Synergism ; Geniculate Bodies/*drug effects ; Hippocampus/*drug effects ; Male ; Neural Inhibition/drug effects ; Norepinephrine/pharmacology ; Pyramidal Tracts/drug effects ; Rats ; Receptors, Serotonin/*drug effects ; Serotonin/*pharmacology ; gamma-Aminobutyric Acid/pharmacology
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  • 27
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    The stomach signals satiety (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-07-14
    Description: Inflatable pyloric cuffs and stomach tubes were implanted in rats. With the cuff inflated and a valve to limit intragastric pressure to that accompanying normal satiety, they drank only as much when they had been deprived of food for 12 hours as without inflation of the cuff. However, they overdrank with the cuff inflated when they had been water deprived for 12 hours. When 10 ml of milk was withdrawn from the stomach with the cuff inflated, compensatory drinking occurred. Further, compensatory drinking also occurred when milk escaped from the stomach into the duodenum. Satiety signals thus arise from the stomach.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Deutsch, J A -- Young, W G -- Kalogeris, T J -- New York, N.Y. -- Science. 1978 Jul 14;201(4351):165-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663647" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Drinking Behavior/physiology ; Duodenum/physiology ; Food Deprivation ; Male ; Rats ; Satiation/*physiology ; Satiety Response/*physiology ; Stomach/*physiology
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  • 28
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    Functional plasticity in the immature striate cortex of the monkey shown by the [14C]deoxyglucose method (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-04-28
    Description: Autoradiographic representation of the local rates of cerebral glucose utilization and local cerebral functional activity by means of the [14C]deoxyglucose technique reveals the existence of the ocular dominance columns in the striate cortex of the monkey in the first day of life. In contrast to the stability of these columns in more mature brain, monocular deprivation for 3 months from the first day of life results in their complete disappearance and a reversion of the autoradiographic pattern to that seen in animals with normal binocular vision. These results are consistent with a reorganization of the representation of the visual fields of the two eyes in the striate cortex and provide additional evidence of the plasticity of the striate cortex of the monkey in early life.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Des Rosiers, M H -- Sakurada, O -- Jehle, J -- Shinohara, M -- Kennedy, C -- Sokoloff, L -- New York, N.Y. -- Science. 1978 Apr 28;200(4340):447-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/417397" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn/physiology ; Brain Mapping ; Cell Differentiation ; Deoxy Sugars/*metabolism ; Deoxyglucose/*metabolism ; Female ; Haplorhini ; Male ; Vision, Ocular ; Visual Cortex/*cytology/physiology ; Visual Pathways/*cytology/physiology
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  • 29
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    Hepatitis B virus and sex ratio of offspring (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-08-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Drew, J S -- London, W T -- Lustbader, E D -- Hesser, J E -- Blumberg, B S -- New York, N.Y. -- Science. 1978 Aug 25;201(4357):687-92.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/566954" target="_blank"〉PubMed〈/a〉
    Keywords: Age Factors ; Birth Order ; Cross Reactions ; Female ; Fetal Death ; Graft Survival ; Hepatitis B/immunology/*physiopathology/transmission ; Hepatitis B Surface Antigens/analysis ; Humans ; Male ; Parity ; Pregnancy ; Sex Factors ; *Sex Ratio
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  • 30
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    Lymphocyte ecto-5'-nucleotidase deficiency in agammaglobulinemia (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-08-18
    Description: Fresh peripheral blood lymphocytes from eight patients with congenital agammaglobulinemia demonstrate reduced ecto-5'-nucleotidase activity when compared to the mean activity of normal subjects and patients with other forms of immunoglobulin deficiency. A specific defect of ecto-5'-nucleotidase is further suggested by normal values for lymphocyte ecto-adenosinetriphosphatase and ecto-nonspecific phosphatase. The data provide evidence for an enzyme deficiency in this X-linked, B lymphocyte deficiency syndrome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Edwards, N L -- Magilavy, D B -- Cassidy, J T -- Fox, I H -- New York, N.Y. -- Science. 1978 Aug 18;201(4356):628-30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27864" target="_blank"〉PubMed〈/a〉
    Keywords: Agammaglobulinemia/*enzymology/genetics ; Cell Membrane/enzymology ; Female ; Genetic Linkage ; Humans ; Hydrogen-Ion Concentration ; IgA Deficiency ; Lymphocytes/*enzymology ; Male ; Nucleotidases/blood/*deficiency ; Rosette Formation ; T-Lymphocytes/immunology ; X Chromosome
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    Thermoregulation is impaired in an environment without circadian time cues (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-02-17
    Description: Squirrel monkeys synchronized to a 24-hour light-dark cycle show a prominent circadian rhythm in body temperature which is regulated against mild environmental cold exposures throughout the 24-hour day. However, cold exposures produce significant decreases in core body temperature when the circadian rhythms of the animal are free-running in the absence of environmental time cues. Effective thermoregulation appears to require the precise internal synchronization of the circadian timekeeping system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fuller, C A -- Sulzman, F M -- Moore-Ede, M C -- New York, N.Y. -- Science. 1978 Feb 17;199(4330):794-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/414356" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Body Temperature Regulation ; *Circadian Rhythm ; Cold Temperature ; Cues ; *Environment ; Environmental Exposure ; Haplorhini ; Homeostasis ; Male ; Saimiri ; Time Factors
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    Population, food intake, and fertility. There is historical evidence for a direct effect of nutrition on reproductive ability (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-01-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Frisch, R E -- New York, N.Y. -- Science. 1978 Jan 6;199(4324):22-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Population Sciences and Center for Population Studies, Harvard University, Cambridge, Massachusetts 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17569482" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Birth Intervals ; Birth Rate ; Contraceptive Devices ; *Diet ; England ; Family Characteristics ; Female ; *Fertility ; Growth ; History, 19th Century ; Humans ; Infertility, Female ; Male ; *Malnutrition ; Menarche ; Menopause ; Scotland ; Social Class ; Socioeconomic Factors ; Warfare
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  • 33
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    Bone marrow origin of hepatic macrophages (Kupffer cells) in humans (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-09-08
    Description: Hepatic macrophages (Kupffer cells) from two male recipients of bone marrow transplants from females were studied for fluorescent Y body staining and sex chromatin (Barr body). After the transplant, macrophages had the sex karyotype of the donor, indicating that human hepatic macrophages originate in bone marrow.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gale, R P -- Sparkes, R S -- Golde, D W -- New York, N.Y. -- Science. 1978 Sep 8;201(4359):937-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/356266" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; *Bone Marrow Cells ; Bone Marrow Transplantation ; Cell Differentiation ; Cell Movement ; Female ; Graft vs Host Disease/immunology ; Humans ; Kupffer Cells/*cytology ; Male ; Transplantation, Homologous
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    Malignant neoplasms of genetic origin in Drosophila melanogaster (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-06-30
    Description: Malignant neoplasms that develop in 12 recessive-lethal, larval mutants of Drosophila melanogaster are discussed. These mutations affect the adult optic neuroblasts and ganglion-mother cells in the larval brain, the imaginal discs, and the hematopoietic organs. The malignant neoplasms exhibit fast, autonomous growth, loss of the capacity for differentiation, increased mobility and invasiveness, lethality in situ and after transplantation, and histological, fine structural, and karyotypic abnormalities. Intermediate neoplasms are also found. These combine both benign and malignant qualities. They grow in a noninvasive, compact fashion, typical of benign tumors, yet they also exhibit malignant qualities such as fast, autonomous, and lethal growth, loss of differentiation capacity, changes in cellular morphology, and lethal growth after transplantation into wild-type hosts. Thus Drosophila and vertebrate neoplasms show striking similarities.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gateff, E -- New York, N.Y. -- Science. 1978 Jun 30;200(4349):1448-59.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/96525" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Cells/pathology ; *Cell Transformation, Neoplastic ; Drosophila melanogaster/*genetics/growth & development ; Ecdysone/pharmacology ; Hematopoiesis ; Mutation ; Neoplasm Transplantation ; Neoplasms, Experimental/*genetics/pathology ; Neuroblastoma/genetics/pathology
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    Discrimination of intermediate sounds in a synthetic call continuum by female green tree frogs (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-03-10
    Description: Male Hyla cinerea produce two distinctive calls. Acoustically intermediate calls are rare. Females discriminate between synthetic intermediates that differ by one cycle of amplitude modulation (50 per second). Processing appears to be continuous. The tree frog's auditory system thus provides a wide margin for the discrimination of its two principal signals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gerhardt, H C -- New York, N.Y. -- Science. 1978 Mar 10;199(4333):1089-91.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/628833" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anura/*physiology ; Auditory Perception/*physiology ; Female ; Male ; Sound ; *Vocalization, Animal
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    Morton's ranking of races by cranial capacity. Unconscious manipulation of data may be a scientific norm (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-05-05
    Description: Samuel George Morton, self-styled objective empiricist, amassed the world's largest pre-Darwinian collection of human skulls. He measured their capacity and produced the results anticipated in an age when few Caucasians doubted their innate superiority: whites above Indians, blacks at the bottom. Morton published all his raw data, and it is shown here that his summary tables are based on a patchwork of apparently unconscious finagling. When his data are properly reinterpreted, all races have approximately equal capacities. Unconscious or dimly perceived finagling is probably endemic in science, since scientists are human beings rooted in cultural contexts, not automatons directed toward external truth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gould, S J -- New York, N.Y. -- Science. 1978 May 5;200(4341):503-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/347573" target="_blank"〉PubMed〈/a〉
    Keywords: African Continental Ancestry Group ; Asian Continental Ancestry Group ; Cephalometry/*history ; *Continental Population Groups ; European Continental Ancestry Group ; Female ; History, 19th Century ; Humans ; Indians, North American ; Indians, South American ; *Intelligence ; Male ; Sex Factors
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    beta-Adrenergic receptors in aged rat brain: reduced number and capacity of pineal gland to develop supersensitivity (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-07-07
    Description: The density but not the affinity of beta-adrenergic receptors declined significantly with age in rat pineal gland, corpus striatum, and cerebellum, as determined by the binding of tritiated dihydroalprenolol. Exposing rats to light for 12 hours increased the binding of this radioligand in 3-month-old but not in 24-month-old rats. The reduced responsiveness to catecholamines seen in aging may be due to a decrease in the number of beta-adrenergic receptors which, in turn, may be caused by an impaired capacity of receptors in aged animals to adapt to changes in adrenergic neuronal input.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Greenberg, L H -- Weiss, B -- New York, N.Y. -- Science. 1978 Jul 7;201(4350):61-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/208145" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Alprenolol/analogs & derivatives/metabolism ; Animals ; Brain/*metabolism ; Cerebellum/metabolism ; Circadian Rhythm ; Corpus Striatum/metabolism ; Kinetics ; Light ; Male ; Neuroglia/metabolism ; Pineal Gland/*metabolism ; Rats ; Receptors, Adrenergic/*metabolism ; Receptors, Adrenergic, beta/*metabolism
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    Subsynaptic plate perforations: changes with age and experience in the rat (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-12-08
    Description: The relative frequency of appearance of discontinuities in the postsynaptic thickening, or perforations in the subsynaptic plate, increased with age and experience. Rats reared from weaning in complex or social environments had a significantly higher proportion of occipital cortical synapses with perforations than did rats reared in isolation. In addition, the relative frequency of these perforations more than tripled between 10 and 60 days of age. Shifts in the frequency of perforations can occur independently of changes in the size of synpases. This result suggests a new potential mechanism of synaptic plasticity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Greenough, W T -- West, R W -- DeVoogd, T J -- New York, N.Y. -- Science. 1978 Dec 8;202(4372):1096-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/715459" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Animals ; Cerebral Cortex/ultrastructure ; Environment ; Male ; Occipital Lobe/*ultrastructure ; Rats ; Synapses/ultrastructure ; Synaptic Membranes/*ultrastructure
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    Endorphins: naloxone fails to alter experimental pain or mood in humans (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-03-10
    Description: In 30 human subjects, experimental pain was produced by either ischemia or cold-water immersion. In a double-blind procedure, intravenous doses of up to 10 milligrams of naloxone hydrochloride in saline were indistinguishable from similarly administered saline alone. There were no effects on subjective pain ratings, finger plethysmograph recordings, or responses to mood-state questionnaires. These laboratory procedures do not activate any functionally significant pain-attenuating or mood-altering effect of endorphins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grevert, P -- Goldstein, A -- New York, N.Y. -- Science. 1978 Mar 10;199(4333):1093-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/343250" target="_blank"〉PubMed〈/a〉
    Keywords: Clinical Trials as Topic ; Double-Blind Method ; Emotions/*drug effects ; Endorphins/*physiology ; Female ; Humans ; Male ; Naloxone/*pharmacology ; Pain/*physiopathology ; Surveys and Questionnaires
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    Immunoassay of androgen binding protein in blood: a new approach for study of the seminiferous tubule (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-04-07
    Description: Androgen binding protein, a secretory product of seminiferous tubules, was isolated by means of affinity chromatography. A radioimmunoassay was developed and used to identify androgen binding protein in rat plasma. The ability to measure a testicular protein in blood provides a new method for investigation of seminiferous tubular physiology.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gunsalus, G L -- Musto, N A -- Bardin, W -- New York, N.Y. -- Science. 1978 Apr 7;200(4337):65-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/635573" target="_blank"〉PubMed〈/a〉
    Keywords: Androgens/metabolism ; Animals ; Blood-Testis Barrier ; Carrier Proteins/*blood/metabolism ; Castration ; Male ; Molecular Weight ; Radioimmunoassay/methods ; Rats ; Seminiferous Tubules/*metabolism ; Testis/*metabolism ; Testosterone/pharmacology
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    Neural factors contribute to atherogenesis (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-01-27
    Description: Electron microscopic evidence of early atherogenic changes in the aorta and coronary arteries was obtained in normal fed, conscious, unrestrained rats receiving electrical stimulation in the lateral hypothalamus for periods of up to 62 days. Hypertension and hypercholesterolemia were not etiologic factors. In view of recent observations concerning neuropsychological mechanisms in human ischemic heart disease, the findings raise the possibility that the human central nervous system has a role in the development of atherosclerotic lesions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gutstein, W H -- Harrison, J -- Parl, F -- Ku, G -- Avtable, M -- New York, N.Y. -- Science. 1978 Jan 27;199(4327):449-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/619468" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aorta/pathology ; Arteriosclerosis/*etiology/pathology/physiopathology ; Blood Pressure ; Cholesterol/blood ; Coronary Vessels/pathology ; *Disease Models, Animal ; Electric Stimulation ; Hypothalamus/*physiopathology ; Male ; Rats ; Stress, Physiological/*complications
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  • 42
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    Aphagia and adipsia after preferential destruction of nerve cell bodies in hypothalamus (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-11-03
    Description: Microinjections of the excitatory neurotoxin kainic acid into the lateral hypothalamus of rats produced a period aphagia and adipsia. Kainate-treated rats displayed transient motor effects during the first hours after the injection but did not show the persisting sensory-motor and arousal disturbances typically observed in animals with electrolytic lesions in this part of the hypothalamus. Histological examination revealed a significant reduction in the number of nerve cell bodies in the lateral hypothalamus. Silver-stained material indicated no evidence of damage to fiber systems passing through the affected region. Assays of dopamine in hypothalamus, striatum, and telencephalon did not indicate significant differences between experimental and control animals. These results are in agreement with recent reports of the anatomical and biochemical effects of intracerebral kainic acid injections and suggest that the observed effect on feeding behavior is related to the destruction of neurons in the lateral hypothalamus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grossman, S P -- Dacey, D -- Halaris, A E -- Collier, T -- Routtenberg, A -- New York, N.Y. -- Science. 1978 Nov 3;202(4367):537-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/705344" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Drinking Behavior/drug effects/*physiology ; Feeding Behavior/drug effects/*physiology ; Hypothalamus/cytology/drug effects/*physiology ; Kainic Acid/pharmacology ; Male ; Motor Activity/drug effects ; Rats ; Thalamic Nuclei/drug effects
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  • 43
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    Diazepam inhibits myoblast fusion and expression of muscle specific protein synthesis (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-05-05
    Description: The presence of diazepam in culutres of chicken embryo myoblasts arrests normal muscle cell differentiation. High concentrations of the drug reversibly prevent myoblasts from fusing to form multinucleated myotubes. Lower concentrations of diazepam allow cell fusion to occur, but inhibit the synthesis and accumulation of myosin heavy chain, implying that cell fusion does not obligate myoblasts to synthesize and accumulate large quantities of muscle specific protein. The effect of diazepam on muscle cells in culture is direct and specific.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bandman, E -- Walker, C R -- Strohman, R C -- New York, N.Y. -- Science. 1978 May 5;200(4341):559-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/565534" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation/drug effects ; Cell Fusion/drug effects ; Cells, Cultured ; Chick Embryo ; Diazepam/*pharmacology ; Dose-Response Relationship, Drug ; Macromolecular Substances ; Muscles/cytology/*drug effects ; Myosins/*biosynthesis
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  • 44
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    Opiate peptide modulation of amino acid responses suggests novel form of neuronal communication (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-03-31
    Description: Mouse spinal neurons grown in tissue culture were used to study the electrophysiological pharmacology of the opiate peptide leucine-enkephalin. Enkephalin depressed glutamate-evoked responses in a noncompetitive manner independent of any other effects on membrane properties. The results demonstrate a neuromodulatory action of opiate peptide functionally distinct from the conventional neurotransmitter class of operation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barker, J L -- Neale, J H -- Smith, T G Jr -- Macdonald, R L -- New York, N.Y. -- Science. 1978 Mar 31;199(4336):1451-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/204016" target="_blank"〉PubMed〈/a〉
    Keywords: Cells, Cultured ; Endorphins/*pharmacology ; Enkephalins/antagonists & inhibitors/*pharmacology ; Excitatory Amino Acid Antagonists ; Glutamates/*pharmacology ; Iontophoresis ; Naloxone/pharmacology ; Neurons/*drug effects ; Spinal Cord ; Synapses/*drug effects ; Synaptic Transmission/*drug effects
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  • 45
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    Decrease of human serum fucosyltransferase as an indicator of successful tumor therapy (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-09-29
    Description: Surgical removal of colon carcinomas leads to a decrease in the rate of incorporation of [14C]fucose into its endogenous acceptor in human serum; normal incorporation rates are attained within 14 days. A similar time course has been determined for alpha2- and alpha3-fucosyltransferase when either desialo- or desialodegalactofetuin are employed as exogenous acceptors. A correlation has also been seen between transferase activity and the therapeutic response of patients with breast cancer. These results indicate that the determination of fucosyltransferase activity can facilitate the diagnosis of neoplasia, and the success of surgery, chemotherapy, or radiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bauer, C H -- Reutter, W G -- Erhart, K P -- Kottgen, E -- Gerok, W -- New York, N.Y. -- Science. 1978 Sep 29;201(4362):1232-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/694511" target="_blank"〉PubMed〈/a〉
    Keywords: Aged ; Breast Neoplasms/*therapy ; Carcinoma/blood/*surgery ; Colonic Neoplasms/blood/*surgery ; Female ; Fucosyltransferases/*blood ; Hexosyltransferases/*blood ; Humans ; Male ; Middle Aged
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  • 46
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    Abnormal auditory evoked potentials in early infancy malnutrition (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-08-04
    Description: Computer-averaged auditory evoked potentials were found to be abnormal in infants hospitalized because of severe malnutrition (marasmus). They improved as the infants' somatic growth improved during the course of treatment, but were still deviant at the time of discharge from the hospital and at subsequent outpatient follow-up. Abnormalities in evoked potentials may reflect a long-lasting effect of malnutrition on brain function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barnet, A B -- Weiss, I P -- Sotillo, M V -- Ohlrich, E S -- Shkurovich, M -- Cravioto, J -- New York, N.Y. -- Science. 1978 Aug 4;201(4354):450-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/96529" target="_blank"〉PubMed〈/a〉
    Keywords: Auditory Cortex/*physiopathology ; Auditory Perception/physiology ; Electroencephalography ; *Evoked Potentials ; Female ; Humans ; Infant ; Male ; Protein-Energy Malnutrition/*physiopathology ; Sex Factors ; Sleep/physiology
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  • 47
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    Loss of division potential in vitro: aging or differentiation? (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-12-15
    Description: We have examined the hypothesis that diploid cells grown in vitro age, and propose that only proliferative potential and not life-span is telescoped. We suggest that explanted or transplanted diploid cells are driven to divide by the process of subculturing in vitro or in vivo and, in response to this pressure, also complete their differentiation and become refractory to further mitotic stimulation. We conclude that differentiation rather than "mortality" distinguishes diploid from transformed cells and that the former may not age in vitro, but are lost because culture methods are selective for cycling cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bell, E -- Marek, L F -- Levinstone, D S -- Merrill, C -- Sher, S -- Young, I T -- Eden, M -- New York, N.Y. -- Science. 1978 Dec 15;202(4373):1158-63.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/725592" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Cycle ; *Cell Differentiation ; *Cell Division ; *Cell Survival ; Cells, Cultured ; Fibroblasts
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  • 48
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    alpha1-Antitrypsin: the presence of excess mannose in the Z variant isolated from liver (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-09-29
    Description: The Z variant of alpha1-antitrypsin was isolated by a new technique from the liver of a patient homozygous for the Z allele of the protease inhibitor locus. The material was homogenous and antigenically competent but had no protease inhibiting capacity. An interesting correlation was found between the subcellular localization and the carbohydrate composition of the Z variant from liver. Carbohydate analysis of this glycoprotein showed an absence of galactose and sialic acid, an appreciable decrease in N-acetylglucosamine, and an almost twofold increase in mannose residues. These data indicate a considerable slowdown in the processing of the oligosaccharides of liver Z variant. In spite of the absence of sialyl residues, the liver Z varant was microheterogeneous by analytical isoelectric focusing. The isoproteins of liver Z variant coincided with those of asialo M variant in the focusing field.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hercz, A -- Katona, E -- Cutz, E -- Wilson, J R -- Barton, M -- New York, N.Y. -- Science. 1978 Sep 29;201(4362):1229-32.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/308696" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Carbohydrate Metabolism ; Female ; Galactose/metabolism ; Glycoproteins/genetics ; Homozygote ; Humans ; Liver/metabolism ; Mannose/metabolism ; Middle Aged ; Mutation ; Phenotype ; Sialic Acids/metabolism ; alpha 1-Antitrypsin/*genetics/metabolism
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  • 49
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    Hamster refractoriness: the role of insensitivity of pineal target tissues (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-11-10
    Description: Hamsters exposed to short days undergo gonadal collapse followed by recrudescence and insensitivity to the regressive effects of such photoperiods. This refractoriness may be due to exhaustion of the pineal gland or desensitization of its target. Hamsters whose gonads had spontaneously recrudesced were injected with melatonin (25 micrograms per injection) once daily (known to induce regression in intact hamsters) or twice daily (reported to arrest reproduction in pinealectomized hamsters) for 7 weeks. In neither case did refractory hamsters respond to melatonin treatment. The gonads of intact hamsters treated with melatonin for 21 weeks regressed and spontaneously recrudesced along a normal time course. These results indicate that gonadal refractoriness is due to insensitivity of the target tissues of the pineal gland and imply that melantonin participates in photoperiodic regulation of reproduction in the golden hamster.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bittman, E L -- New York, N.Y. -- Science. 1978 Nov 10;202(4368):648-50.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/568311" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cricetinae/*physiology ; Light ; Male ; Melatonin/*pharmacology ; Mesocricetus/*physiology ; Motor Activity/physiology ; Organ Size/drug effects ; Pineal Gland/*physiology ; *Seasons ; Testis/anatomy & histology/*growth & development
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  • 50
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    Stimulation of dopamine synthesis in caudate nucleus by intrastriatal enkephalins and antagonism by naloxone (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-05-05
    Description: The intraventricular injection of methionine-enkephalin (50 to 100 micrograms) or [d-Ala2]-methionine-enkephalinamide (1.5 to 12 micrograms), a synthetic enkephalin analog resistant to enzyme degradation, caused a marked dose-dependent increase in dihydroxyphenylacetic acid and homovanillic acid concentrations in the rat striatum. The [d-Ala2] analog increased the accumulation of dopa in the striatum after aromatic amino acid decarboxylase inhibition, indicating that it increased dopamine synthesis. At the highest doses used both enkephalins failed to modify brain serotonin metabolism. The monolateral microinjection of the [d-Ala2]] analog (3 to 6 micrograms) into the caudate nucleus increased the concentration of dihydroxyphenylacetic acid in the injected side, whereas bilateral injection increased the concentration of this compound in both caudate nuclei and caused catalepsy. The stimulant effect of the [d-Ala2] analog on dopamine synthesis in the striatum persisted after destruction of striatal postsynaptic dopamine receptors with kainic acid. The biochemical and behavioral effects of enkephalins were prevented by naloxone, a specific narcotic antagonist. The results indicate that enkephalins stimulate dopamine synthesis by an action on opioid receptors localized on dopaminergic nerve terminals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Biggio, G -- Casu, M -- Corda, M G -- Di Bello, C -- Gessa, G L -- New York, N.Y. -- Science. 1978 May 5;200(4341):552-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/205949" target="_blank"〉PubMed〈/a〉
    Keywords: 3,4-Dihydroxyphenylacetic Acid/metabolism ; Animals ; Caudate Nucleus/*metabolism ; Dopamine/*biosynthesis ; Endorphins/*pharmacology ; Enkephalins/antagonists & inhibitors/*pharmacology ; Homovanillic Acid/metabolism ; Kainic Acid/pharmacology ; Male ; Naloxone/pharmacology ; Rats ; Receptors, Dopamine/drug effects ; Receptors, Opioid/drug effects
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    Risk factor intervention for health maintenance (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-05-26
    Description: Risk factors for disease consist of (i) personal habits, such as cigarette smoking and excessive alcohol consumption, and (ii) bodily characteristics, such as hypertension and high serum cholesterol. Progress in identifying and quantifying risk factors is opening the way to the prevention of disease and maintenance of health. Systematic, controlled trials of intervention against risk factors are beginning to produce evidence on the extent of success in reducing both the factors and the mortality from associated diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Breslow, L -- New York, N.Y. -- Science. 1978 May 26;200(4344):908-12.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/644333" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Arteriosclerosis/etiology ; Coronary Disease/etiology/*prevention & control ; Disease/*etiology ; Female ; Humans ; Hypercholesterolemia/complications ; Hypertension/complications ; Lung Neoplasms/etiology ; Male ; Middle Aged ; *Preventive Medicine ; *Probability ; *Risk ; Smoking/complications
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  • 52
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    Fallopian tube isthmic mucus and ovum transport (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-07-28
    Description: The oviduct isthmus is capable of transporting spermatozoa and ova in opposite directions. A column of tenacious mucus that occupies the lumen of the rabbit oviduct isthmus during estrus may permit sperm transport. After ovulation the mucus disappears, with subsequent efforescence of cilia, which probably assist transport of ova to the uterus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jansen, R P -- New York, N.Y. -- Science. 1978 Jul 28;201(4353):349-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/580814" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chorionic Gonadotropin/pharmacology ; Cilia/physiology ; Estradiol/pharmacology ; Fallopian Tubes/*physiology ; Female ; In Vitro Techniques ; Male ; Microscopy, Electron, Scanning ; Mucous Membrane/physiology ; Mucus/physiology ; Ovulation/drug effects ; *Ovum Transport ; Rabbits ; *Sperm Transport
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    Increased resistance to Staphylococcus aureus infection and enhancement in serum lysozyme activity by glucan (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-03-24
    Description: Glucan is a potent reticuloendothelial stimulant whose immunobiological activity is mediated, in part, by an increase in the number and function of macrophages. In studying the role of glucan as a mediator of antibacterial activity, we attempted to ascertain the ability of glucan to modify the mortality of mice with experimentally induced Gram-positive bacteremia, and to enhance antibacterial defenses in rats as denoted by serum lysozyme and phagocytic activity. After intravenous administration of glucan, serum lysozyme concentrations were increased approximately sevenfold over control concentrations. The increase in serum lysozyme appeared to parallel the glucan-induced increase in phagocytosis and induced hyperplasia of macrophages. Prior treatment of mice with glucan significantly enhanced their survival when they were challenged systemically with Staphylococcus aureus. These studies indicate that glucan confers an enhanced state of host defense against bacterial infections.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kokoshis, P L -- Williams, D L -- Cook, J A -- Di Luzio, N R -- New York, N.Y. -- Science. 1978 Mar 24;199(4335):1340-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/628841" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacteriolysis/drug effects ; Immunotherapy ; Macrophages/drug effects ; Male ; Muramidase/*blood ; Phagocytosis/*drug effects ; Polysaccharides/*pharmacology/therapeutic use ; Rats ; Sepsis/prevention & control ; Staphylococcal Infections/*prevention & control/therapy ; Staphylococcus aureus
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  • 54
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    Polyribosomes associated with forming acrosome membranes in guinea pig spermatids (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-04-07
    Description: Ribosomes, some of which are arranged in polyribosomal configurations, are attached to specialized regions of the acrosomal membrane in guinea pig spermatids. This finding indicates a new functional dimension for the acrosomal membrane, that of protein synthesis, and suggests that during acrosome formation, proteins of the acrosomal membrane or acrosomal contents need not be synthesized before or during passage through the Golgi apparatus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mollenhauer, H H -- Morre, D J -- New York, N.Y. -- Science. 1978 Apr 7;200(4337):85-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/635579" target="_blank"〉PubMed〈/a〉
    Keywords: Acrosome/metabolism/*ultrastructure ; Animals ; Guinea Pigs ; Male ; Membranes/ultrastructure ; Polyribosomes/metabolism/*ultrastructure ; Spermatids/*ultrastructure ; Spermatogenesis ; Spermatozoa/*ultrastructure
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    Inhibition of bone formation during space flight (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-09-22
    Description: Parameters of bone formation and resorption were measured in rats orbited for 19.5 days aboard the Soviet Cosmos 782 biological satellite. The most striking effects were on bone formation. During flight, rats formed significantly less periosteal bone than did control rats on the ground. An arrest line at both the periosteum and the endosteum of flight animals suggest that a complete cessation of bone growth occurred. During a 26-day postflight period, the defect in bone formation was corrected. No significant changes in bone resorption were observed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Morey, E R -- Baylink, D J -- New York, N.Y. -- Science. 1978 Sep 22;201(4361):1138-41.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/150643" target="_blank"〉PubMed〈/a〉
    Keywords: *Aerospace Medicine ; Animals ; *Bone Development ; Bone Matrix/physiology ; Bone Resorption ; Male ; Periosteum/physiology ; Rats ; *Space Flight ; Specific Pathogen-Free Organisms ; Tetracycline ; Tibia/cytology/growth & development/physiology ; Time Factors ; Weightlessness
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    Activity patterns of human skeletal muscles: relation to muscle fiber type composition (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-04-21
    Description: The muscle activity of normal ambulatory individuals was recorded continuously for 8-hour (working day) periods. Parameters of activity patterns were defined and numerical outcomes for these parameters were compared across a diverse population of muscles. Several pattern parameters, such as the average percentage of time active, were highly correlated with the percentage of type I fibers of a muscle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Monster, A W -- Chan, H -- O'Connor, D -- New York, N.Y. -- Science. 1978 Apr 21;200(4339):314-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/635587" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Electromyography ; Humans ; Male ; *Muscle Contraction ; Muscles/anatomy & histology/*physiology ; Time Factors
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    Ammonia intoxication in the near-adult cat as a result of a dietary deficiency of arginine (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-01-27
    Description: Near-adult cats, fasted overnight, and given a single meal of a complete amino acid diet without arginine, developed hyperammonemia and showed clinical symptoms of ammonia toxicity within 2 hours. One cat (2.7 kilograms) died 4.5 hours after ingesting only 8 grams of the diet. Since ornithine also prevented hyperammonemia, it appears that the domestic cat cannot synthesize ornithine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Morris, J G -- Rogers, Q R -- New York, N.Y. -- Science. 1978 Jan 27;199(4327):431-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/619464" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acids/metabolism ; Ammonia/*blood/toxicity ; *Animal Nutritional Physiological Phenomena ; Animals ; Arginine/*deficiency/metabolism ; Cats/*metabolism ; Female ; Male ; Ornithine/metabolism ; Time Factors
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    B lymphocyte antigens in sicca syndrome (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-03-31
    Description: All individuals tested in this study with sicca syndrome, a human autoimmune disease, bear two immunologically distinct and genetically unrelated B lymphocyte antigens that appear similar to the immune response associated (Ia) antigens of the mouse. The genes coding for these two antigens are present in only 37 and 24 percent of normal controls. In animal models Ia antigen genes are closely linked to immune response genes. Our findings suggest that two such genes may be required for the development of sicca syndrome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moutsopoulos, H M -- Chused, T M -- Johnson, A H -- Khudsen, B -- Mann, D L -- New York, N.Y. -- Science. 1978 Mar 31;199(4336):1441-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/415366" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Aged ; Autoimmune Diseases/*immunology ; B-Lymphocytes/*immunology ; Female ; *Genes, MHC Class II ; Genetic Linkage ; HLA Antigens/analysis/genetics ; Humans ; Isoantigens/*analysis/genetics ; Male ; Middle Aged ; Sjogren's Syndrome/genetics/*immunology
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    Human lateralization from head to foot: sex-related factors (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-06-16
    Description: Sex differences in the pattern and maturation of lateral asymmetries of the human brain have been recently found by a number of investigators, suggesting that sex-related factors may differentially affect the two sides of the body. In this study, asymmetries in the size of the two feet were strongly related to sex and handedness, right-handed males having larger right feet and right-handed females having larger left feet, the reverse being seen in non-right-handed individuals. Since these differences were apparent even in children younger than 6 years, the fetal sex steroids may be critical in governing the maturation of both cerebral and pedal asymmetries.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levy, J -- Levy, J M -- New York, N.Y. -- Science. 1978 Jun 16;200(4347):1291-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663611" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Age Factors ; Child ; Child, Preschool ; Female ; Foot/*anatomy & histology ; *Functional Laterality ; Genetic Linkage ; Humans ; Male ; *Sex Factors
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    Neurotrophic protein regulates muscle acetylcholinesterase in culture (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-04-21
    Description: Skeletal muscles lose acetylcholinesterase in culture as a result of denervation. A protein fraction isolated from peripheral nerves maintained the level of acetylcholinesterase in cultures of aneural embryonic muscle or denervated adult chicken muscle. These results indicate that trophic regulation of muscle acetylcholinesterase might be mediated by a protein produced by nerves.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Oh, T H -- Markelonis, G J -- New York, N.Y. -- Science. 1978 Apr 21;200(4339):337-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/635593" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholinesterase/biosynthesis/*metabolism ; Cells, Cultured ; Enzyme Induction/drug effects ; Muscle Denervation ; Muscles/*enzymology ; Nerve Tissue Proteins/*pharmacology ; Peripheral Nerves/*physiology
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    Lead exposure during infancy permanently increases lithium-induced polydipsia (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-08-18
    Description: Lead (200 milligrams per kilogram) was administered daily by intubation to Long-Evans rats on days 3 through 30 of life. Thirty to 180 days after cessation of lead administration, the lead-treated rats were consistently more polydipsic after lithium administration (2 millimoles per kilogram per day) than were pair-treated controls. Lithium increased the plasma renin activity equally in both the lead treated and the control groups. These data are evidence that there may be permanent neural changes induced by postnatal exposure to lead that are manifested by pharmacological challenge with lithium.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mailman, R B -- Krigman, M R -- Mueller, R A -- Mushak, P -- Breese, G R -- New York, N.Y. -- Science. 1978 Aug 18;201(4356):637-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/675249" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; *Drinking Behavior/drug effects ; Female ; Lead Poisoning/*physiopathology ; Lithium/pharmacology ; Male ; Rats ; Renin/blood
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    Different actions of anticonvulsant and anesthetic barbiturates revealed by use of cultured mammalian neurons (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-05-19
    Description: Barbiturate anesthetics, but not anticonvulsants, abolish the spontaneous activity of cultured spinal cord neurons; directly increase membrane conductance, an effect which is suppressed by the gamma-aminobutyric acid (GABA) antagonists picrotoxin and penicillin; and are more potent than anticonvulsants in augmenting GABA and depressing glutamate responses. Barbiturate anticonvulsants abolish picrotoxin-induced convulsive activity. These results indicate qualitative and quantitative differences between anesthetic and anticonvulsant barbiturates, which may explain their different clinical effects.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Macdonald, R L -- Barker, J L -- New York, N.Y. -- Science. 1978 May 19;200(4343):775-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/205953" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials/drug effects ; Cells, Cultured ; Electric Conductivity ; Glutamates/pharmacology ; Membrane Potentials/drug effects ; Neurons/*drug effects ; Pentobarbital/*pharmacology ; Phenobarbital/*pharmacology ; Picrotoxin/pharmacology ; Receptors, Neurotransmitter/drug effects ; gamma-Aminobutyric Acid/pharmacology
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    Specific-opiate-induced depression of transmitter release from dorsal root ganglion cells in culture (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-03-31
    Description: The opiate etorphine depresses monosynaptic excitatory postsynaptic potentials (EPSP's) elicited in spinal cord cells by activation of dorsal root ganglion cells in murine neuronal cell culture. The depression is reversed by naloxone. Statistical analysis of the synaptic responses reveals that the opiate reduces EPSP quantal content at this synapse without altering quantal size. Therefore, the opiate action is presynaptic and affects transmitter release rather than postsynaptic responsiveness.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Macdonald, R L -- Nelson, P G -- New York, N.Y. -- Science. 1978 Mar 31;199(4336):1449-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/204015" target="_blank"〉PubMed〈/a〉
    Keywords: Cells, Cultured ; Depression, Chemical ; Dose-Response Relationship, Drug ; Etorphine/*pharmacology ; Ganglia, Spinal/*drug effects ; Membrane Potentials/drug effects ; Morphinans/*pharmacology ; Naloxone/pharmacology ; Nerve Endings/drug effects ; Spinal Cord/drug effects ; Synapses/drug effects ; Synaptic Transmission/*drug effects
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    Electrical stimulation of the amygdala as a conditioned stimulus in a bait-shyness paradigm (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-08-11
    Description: Animals receiving low-intensity electrical stimulation of the basolateral nucleus of the amygdala while drinking plain tap water were injected with toxic doses of lithium chloride to examine whether brain stimulation can serve as a conditioned stimulus in a bait-shyness paradigm. Subjects receiving this pairing greatly reduced their water intake in a retention test, in a similar manner to a group in which saccharin was paired with poisoning. Pairing lithium chloride with stimulation of the amygdala had no effect on subsequent water intake in the absence of brain stimulation. This effect appears to be locus specific, as caudate stimulation could not serve as a conditioned stimulus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Phillips, A G -- LePiane, F G -- New York, N.Y. -- Science. 1978 Aug 11;201(4355):536-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663673" target="_blank"〉PubMed〈/a〉
    Keywords: Amygdala/*physiology ; Animals ; Avoidance Learning/*physiology ; Brain Mapping ; Caudate Nucleus/physiology ; Conditioning, Classical/*physiology ; Electric Stimulation ; Male ; Rats ; Retention (Psychology)/physiology ; Taste/*physiology
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    Neural lateralization of species-specific vocalizations by Japanese macaques (Macaca fuscata) (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-10-20
    Description: Five Japanese macaques and five other Old World monkeys were trained to discriminate among field-recorded Japanese macaque vocalizations. One task required discrimination of a communicatively relevant acoustic feature ("peak"), and a second required discrimination of an orthogonal feature of the same vocalizations ("pitch"). The Japanese animals more proficiently discriminated the peak feature when stimuli were presented to the right ear (primarily left cerebral hemisphere), as opposed to the left ear (primarily right hemisphere). In discriminating the pitch feature, the Japanese animals either showed (i) a left-ear processing advantage or (ii) no ear advantage. The comparison animals, with one exception, showed no ear advantage in processing either feature of the vocalizations. The results suggest that Japanese macaques engage left-hemisphere processors for the analysis of communicatively significant sounds that are analogous to the lateralized mechanisms used by humans listening to speech.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Petersen, M R -- Beecher, M D -- Zoloth, S R -- Moody, D B -- Stebbins, W C -- New York, N.Y. -- Science. 1978 Oct 20;202(4365):324-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/99817" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Auditory Perception/*physiology ; Discrimination Learning/physiology ; Female ; *Functional Laterality ; Haplorhini ; Macaca/*physiology ; Male ; Species Specificity ; Vocalization, Animal/*physiology
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    The mating game: what happens when sperm meets egg (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-06-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J L -- New York, N.Y. -- Science. 1978 Jun 16;200(4347):1256-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26971" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Contraception, Immunologic ; Female ; *Fertilization ; Glycoproteins/physiology ; Humans ; Hydrogen-Ion Concentration ; Male ; Mammals ; Sea Urchins ; *Sperm-Ovum Interactions
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    Kainic acid lesions of the striatum dissociate amphetamine and apomorphine stereotypy: similarities to Huntingdon's chorea (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-07-28
    Description: Kainic acid lesion of cell bodies in the dorsal striatum enhanced the stereotypy-producing effects of d-amphetamine without affecting the sterotypy produced by the direct receptor agonist apomorphine. This pattern of results parallels that found in patients suffering from Hungtington's chorea, thus strengthening the parallels between the kainic acid animal model and the human disease state initially suggested on biochemical gounds. The present results further suggest a dissociation of the mechanisms involved in the production of stereotypy by these two drugs, perhaps in terms of differential involvement of the striato-nigral negative feedback loop.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mason, S T -- Sanberg, P R -- Fibiger, H C -- New York, N.Y. -- Science. 1978 Jul 28;201(4353):352-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26976" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apomorphine/*pharmacology ; Behavior/*drug effects ; Choline O-Acetyltransferase/metabolism ; Corpus Striatum/*drug effects/enzymology/pathology ; Dextroamphetamine/*pharmacology ; Disease Models, Animal ; Glutamate Decarboxylase/metabolism ; Humans ; Huntington Disease/*physiopathology ; *Kainic Acid/pharmacology ; Male ; Nucleus Accumbens/enzymology ; *Pyrrolidines/pharmacology ; Rats ; Stereotyped Behavior/*drug effects ; Tyrosine 3-Monooxygenase/metabolism
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    Dextroamphetamine: cognitive and behavioral effects in normal prepubertal boys (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-02-03
    Description: The behavioral, cognitive, and electrophysiological effect of a single dose of dextroamphetamine (0.5 milligram per kilogram of body weight) or placebo was examined in 14 normal prepubertal boys (mean age, 10 years 11 months) in a double-blind study. When amphetamine was given, the group showed a marked decrease in motor activity and reaction time and improved performance on cognitive tests. The similarity of the response observed in normal children to that reported in children with "hyperactivity" or minimal brain dysfunction casts doubt on pathophysiological models of minimal brain dysfunction which assume that children with this syndrome have a clinically specific or "paradoxical" response to stimulants.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rapoport, J L -- Buchsbaum, M S -- Zahn, T P -- Weingartner, H -- Ludlow, C -- Mikkelsen, E J -- New York, N.Y. -- Science. 1978 Feb 3;199(4328):560-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/341313" target="_blank"〉PubMed〈/a〉
    Keywords: Attention Deficit Disorder with Hyperactivity/drug therapy ; Behavior/*drug effects ; Child ; Clinical Trials as Topic ; Cognition/*drug effects ; Dextroamphetamine/*pharmacology/therapeutic use ; Double-Blind Method ; Electrophysiology ; Emotions/drug effects ; Humans ; Male ; Motor Activity/drug effects
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    Potent antidopaminergic activity of estradiol at the pituitary level on prolactin release (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-06-09
    Description: Prior incubation of rat anterior pituitary cells with 17beta-estradiol led to an almost complete reversal of the inhibitory effect of two dopamine agonists, dihydroergocornine and RU 24213, on both basal prolactin release and thyrotropin releasing hormone-induced prolactin release. These experiments thus demonstrate a direct interference of dopamine action by a peripheral hormone. Prolactin secretion by pituitary cells in primary culture could possibly serve as an easily accessible model of a system under dopaminergic control.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Raymond, V -- Beaulieu, M -- Labrie, F -- Boissier, J -- New York, N.Y. -- Science. 1978 Jun 9;200(4346):1173-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/418505" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Dihydroergotoxine/antagonists & inhibitors ; *Dopamine Antagonists ; Estradiol/*pharmacology ; Female ; Phenethylamines/antagonists & inhibitors ; Pituitary Gland, Anterior/*drug effects/secretion ; Prolactin/*secretion ; Rats ; Thyrotropin-Releasing Hormone/pharmacology
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    Prenatal exposure to prednisone in humans and animals retards intrauterine growth (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-10-27
    Description: Prednisone treatment for infertility and subsequent pregnancy maintenance in humans resulted in a significant decrease in the birth weight of full-term infants and a marked increase in the percentage of newborn infants weighing 2500 grams or less, that is, "light for dates" in comparison to control offspring. A parallel experiment with mice indicated that the reduction of birth weight was caused by exposure to corticosteroids rather than to maternal disease or malfunction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reinisch, J M -- Simon, N G -- Karow, W G -- Gandelman, R -- New York, N.Y. -- Science. 1978 Oct 27;202(4366):436-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/705336" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Birth Weight/*drug effects ; Female ; Fetus/*drug effects ; Humans ; *Infant, Low Birth Weight ; Infant, Newborn ; Male ; Mice ; Prednisone/*adverse effects ; Pregnancy/*drug effects
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    Attenuation of amnesia in rats by systemically administered enkephalins (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-04-07
    Description: The pentapeptides methionine-enkephalin and leucine-enkephalin are both able to reduce experimentally induced amnesia in rats. In contrast to the possible analgesic activity of these peptides, the anti-amnesic effect is seen after systemic administration of dosages of 30 micrograms or lower. The nature of the anti-amnesic effect is different for the two peptides.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rigter, H -- New York, N.Y. -- Science. 1978 Apr 7;200(4337):83-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/635578" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Avoidance Learning/*drug effects ; Carbon Dioxide/antagonists & inhibitors ; Dose-Response Relationship, Drug ; Endorphins/*pharmacology ; Enkephalins/*pharmacology ; Male ; Memory/*drug effects ; Rats ; Time Factors
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    Fluorescence-immunocytochemistry: simultaneous localization of catecholamines and gonadotropin-releasing hormone (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-04-07
    Description: Gonadotropin-releasing hormone and dopamine were identified simultaneously in the same block of tissue from the median eminence of the rat brain. Two distinct bands of dopamine terminals were found in the lateral median eminence: an inner band which overlapped the gonadotropin-releasing hormone terminals and an outer band which appeared juxtaposed to portal capillaries.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McNeill, T H -- Sladek, J R Jr -- New York, N.Y. -- Science. 1978 Apr 7;200(4337):72-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/345442" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dopamine/*metabolism ; Gonadotropin-Releasing Hormone/*metabolism ; Hypothalamo-Hypophyseal System/*metabolism ; Immunoenzyme Techniques ; Male ; Median Eminence/*metabolism ; Microscopy, Fluorescence ; Nerve Endings/metabolism ; Norepinephrine/*metabolism ; Rats
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    Potency in male rhesus monkeys: effects of continuously receptive females (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-04-28
    Description: Ejaculations decreased and mount latencies increased when intact males were paired regularly over a 3.5-year period (3180 tests) with ovariectomized females made constantly receptive by daily injections of estradiol. The deterioration in potency was abruptly and completely reversed by substituting a group of new but similarly treated females for the original ones.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Michael, R P -- Zumpe, D -- New York, N.Y. -- Science. 1978 Apr 28;200(4340):451-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/417398" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Ejaculation ; Female ; Haplorhini ; Macaca/*physiology ; Macaca mulatta/*physiology ; Male ; Pair Bond ; Periodicity ; Seasons ; Sexual Behavior, Animal/*physiology ; Testosterone/blood ; Time Factors
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  • 74
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    delta9-tetrahydrocannabinol: antiaggressive effects in mice, rats, and squirrel monkeys (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-03-31
    Description: delta9-Tetrahydrocannabinol, the most active constituent of marihuana, decreased species-specific attack behavior in mice, rats, and squirrel monkeys at doses (0.25 to 2.0 milligram per kilogram of body weight) that have no effects on other elements of the behavioral repertoire. Aggressive behavior was engendered in all three species by confronting a resident animal with an intruder conspecific. The present results contrast with the widely held belief that marihuana increases aggressive behavior.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miczek, K A -- New York, N.Y. -- Science. 1978 Mar 31;199(4336):1459-61.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/415367" target="_blank"〉PubMed〈/a〉
    Keywords: Aggression/*drug effects ; Animals ; Behavior, Animal/*drug effects ; Depression, Chemical ; Dose-Response Relationship, Drug ; Dronabinol/*pharmacology ; Female ; Haplorhini ; Humans ; Male ; Mice ; Motor Activity/drug effects ; Rats ; Saimiri ; Territoriality
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  • 75
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    Symbolic communication between two chimpanzees (Pan troglodytes) (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-08-18
    Description: Through use of learned symbols, two chimpanzees accurately specified 11 foods by name to one another when the food item's identity was known by only one. They could not do this when denied use of the symbols. The chimpanzees then spontaneously requested specific foods of one another by name. Requests resulted in cooperative and reciprocal symbolically mediated food exchange.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Savage-Rumbaugh, E S -- Rumbaugh, D M -- Boysen, S -- New York, N.Y. -- Science. 1978 Aug 18;201(4356):641-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/675251" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Communication ; Animals ; Behavior, Animal/*physiology ; Male ; Pan troglodytes/*physiology
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  • 76
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    Medial preoptic lesions and male sexual behavior: age and environmental interactions (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-06-23
    Description: In all species studied, the medial preoptic area has been found to be necessary for male copulatory behavior. No recovery of sexual function from the medial preoptic area lesions appears to have been reported. This study demonstrates that rats with large lesions of the medial preoptic area exhibit adult male sexual behavior when the surgery is performed prepuberally and the rats have interacted socially with peers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Twiggs, D G -- Popolow, H B -- Gerall, A A -- New York, N.Y. -- Science. 1978 Jun 23;200(4348):1414-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663624" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Copulation/*physiology ; Environment ; Hypothalamus/*physiology ; Male ; Preoptic Area/*physiology ; Rats ; *Sexual Maturation
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  • 77
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    Oral cocaine: plasma concentrations and central effects (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-04-14
    Description: Cocaine (2.0 milligrams per kilogram) given by the oral route is at least as effective as the same dose given intranasally. Cocaine is not detected in the plasma until 30 minutes after oral administration, but peak plasma concentrations are similar after both routes. The subjective "highs" in man are greater after oral than after intranasal administration.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Van Dyke, C -- Jatlow, P -- Ungerer, J -- Barash, P G -- Byck, R -- New York, N.Y. -- Science. 1978 Apr 14;200(4338):211-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24895" target="_blank"〉PubMed〈/a〉
    Keywords: Administration, Intranasal ; Administration, Oral ; Adult ; Cocaine/*administration & dosage/blood/pharmacology ; Euphoria/drug effects ; Humans ; Hydrogen-Ion Concentration ; Intestinal Absorption ; Male ; Time Factors
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  • 78
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    Effects of naloxone on schizophrenia: reduction in hallucinations in a subpopulation of subjects (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-07-07
    Description: Endogenous opiate-like peptides (endorphins) are putative neuroregulators located throughout the mammalian brainstem. There is some evidence for their role in pain, stress, and affect. We report that the opiate antagonist, naloxone, alters some schizophrenic symptoms. In a double-blind, cross-over study, naloxone produced decreases in auditory hallucinations in some schizophrenic patients. This finding supports the hypothesis that the endorphins may play a roll in modulating hallucinations in a highly selected subgroup of chronically hallucinating schizophrenic patients.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Watson, S J -- Berger, P A -- Akil, H -- Mills, M J -- Barchas, J D -- New York, N.Y. -- Science. 1978 Jul 7;201(4350):73-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/351804" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Chronic Disease ; Clinical Trials as Topic ; Dose-Response Relationship, Drug ; Double-Blind Method ; Endorphins/physiology ; Hallucinations/*drug therapy ; Humans ; Male ; Naloxone/administration & dosage/*therapeutic use ; Schizophrenia/*drug therapy/physiopathology ; Schizophrenia, Paranoid/drug therapy ; Time Factors
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  • 79
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    Adrenocorticotropin in rat brain: immunocytochemical localization in cells and axons (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-06-09
    Description: By means of antiserum (purified by affinity chromatography) directed against adrenocorticotropin (ACTH) 11-24, cell bodies and beaded axons were visualized in rat brain. The ACTH-like immunoreactivity (ACTH-LI) was primarily located in the hypothalamus (cells and axons). Fibers were scattered throughout thalamus, amygdala, periaqueductal gray area, and reticular formation. There was no change in the distribution of ACTH-LI in rats that had been subjected to hypophysectomy. This distribution of ACTH-LI parallels that of beta-lipotropin and is altered by specific lesions in a similar fashion. The presence of ACTH-LI in cells and beaded axons in brain raises the possibility that it is a neuroregulator functioning as a neurotransmitter, neuromodulator, or neurohormone.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Watson, S J -- Richard, C W 3rd -- Barchas, J D -- New York, N.Y. -- Science. 1978 Jun 9;200(4346):1180-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/206967" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenocorticotropic Hormone/*metabolism ; Animals ; Axons/metabolism ; Brain/cytology/*metabolism ; Hypothalamus/metabolism ; Immunoenzyme Techniques ; Male ; Pituitary Gland/*metabolism ; Rats ; beta-Lipotropin/metabolism
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  • 80
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    Origins of prokaryotes, eukaryotes, mitochondria, and chloroplasts (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-01-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schwartz, R M -- Dayhoff, M O -- New York, N.Y. -- Science. 1978 Jan 27;199(4327):395-403.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/202030" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; *Biological Evolution ; *Cells ; *Chloroplasts ; Computers ; Cytochrome c Group ; *Eukaryotic Cells ; Ferredoxins ; *Mitochondria ; Nucleic Acids ; *Prokaryotic Cells ; Proteins ; RNA, Ribosomal
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  • 81
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    Nature and nurture in development of the autonomic neuron (1978)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1978-03-31
    Description: Arguments are presented for the hypothesis that during an early stage of development the cells which become principal neurons of the autonomic nervous system possess information regarding the positions they will occupy within the body. A second stage of development, during which a decision is made regarding which neurotransmitter to employ, is delayed until each neuron has assumed its permanent position in the body and has sampled, presumably via its growing axons, the peripheral field which it will innervate. The development of cholinergic mechanisms takes precedence; adrenergic neurons may develop only when cholinergic sites have been occupied. An extended period during which the differentiation of transmitter mechanisms may be modulated permits the neuron to adequately sample the periphery prior to commitment to a specific transmitter economy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bunge, R -- Johnson, M -- Ross, C D -- New York, N.Y. -- Science. 1978 Mar 31;199(4336):1409-16.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24273" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenergic Fibers/cytology ; Animals ; Autonomic Nervous System/*embryology/growth & development ; Cell Differentiation ; Cells, Cultured ; Chimera ; Cholinergic Fibers/cytology ; Embryonic Induction ; Ganglia, Autonomic/cytology ; Heart/innervation ; Intestines/innervation ; Nerve Endings/ultrastructure ; Neurotransmitter Agents/metabolism ; Phylogeny ; Synaptic Vesicles/ultrastructure
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  • 82
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    Metabolism of theophylline to caffeine in human fetal liver (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-12-14
    Description: Caffeine (1,3,7-trimethylxanthine) is a biotransformation product of theophylline (1,3-dimethylxanthine) in the human fetus. Liver explants, obtained from human fetuses with gestational ages of 12 to 20 weeks, were incubated with theophylline and produced caffeine and, in lesser amounts, 1,3-dimethyluric acid and 3-methylxanthine. These findings suggest that the predominant pathway in theophylline metabolism in the fetus and newborn infant is the methylation reaction producing caffeine. This may contribute to the neonate's exceedingly slower elimination of caffeine relative to theophylline. Caffeine produced from theophylline may add to the pharmacologic effects of theophylline in newborn infants with apnea.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aranda, J V -- Louridas, A T -- Vitullo, B B -- Thom, P -- Aldridge, A -- Haber, R -- New York, N.Y. -- Science. 1979 Dec 14;206(4424):1319-21.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/515734" target="_blank"〉PubMed〈/a〉
    Keywords: Apnea/drug therapy ; Biotransformation ; Caffeine/*biosynthesis/metabolism/therapeutic use ; Cells, Cultured ; Gestational Age ; Humans ; Infant, Newborn ; Liver/*embryology/metabolism ; Methylation ; Theophylline/*metabolism/therapeutic use
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  • 83
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    Opioid peptides modulate luteinizing hormone secretion during sexual maturation (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-03-16
    Description: Subcutaneous injections of naloxone, an opiate antagonist, lead to an increase in serum luteinizing hormone concentrations in female but not in male rats before they reach puberty. In addition, estradiol benzoate specifically blocks the luteinizing hormone response to naloxone in prepubertal female rats, suggesting that the opioid peptides have a physiological role in the endocrine events leading to sexual maturation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Blank, M S -- Panerai, A E -- Friesen, H G -- New York, N.Y. -- Science. 1979 Mar 16;203(4385):1129-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/424743" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Endorphins/antagonists & inhibitors/*physiology ; Estradiol/pharmacology ; Female ; Luteinizing Hormone/blood/*secretion ; Male ; Naloxone/antagonists & inhibitors/pharmacology ; Rats ; Secretory Rate/drug effects ; Sexual Maturation/*drug effects
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  • 84
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    Metabolism of americium-241 in man: an unusual case of internal contamination of a child and his father (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-10-05
    Description: The metabolism of americium-241 has been studied during an 8-year period in an adult male and his son who, at the ages of 50 and 4 years, respectively, were accidentally and unknowingly contaminated within their home by means of inhalation. Chelation therapy with calcium trisodium pentetate was more effective in enhancing the removal of americium-241 from the child than from the father.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, N -- Sasso, T L -- Wrenn, M E -- New York, N.Y. -- Science. 1979 Oct 5;206(4414):64-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/482925" target="_blank"〉PubMed〈/a〉
    Keywords: Age Factors ; Americium/*metabolism/poisoning ; Body Burden ; Body Height ; Body Weight ; Bone and Bones/metabolism ; Chelating Agents/*therapeutic use ; Child, Preschool ; Humans ; Liver/metabolism ; Lung/metabolism ; Male ; Middle Aged
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  • 85
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    Enhanced 5-fluorouracil nucleotide formation after methotrexate administration: explanation for drug synergism (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-09-14
    Description: Exposure of L1210 leukemia cells first to 0.1 to 100 micromolar methotrexate and then to 10 micromolar 5-fluorouracil produces a synergistic effect on the number of cells killed in culture. Methotrexate dose-related increases occur in the concentrations of intracellular 5-fluorouracil ribonucleotides and 5-fluoro-2'-deoxyuridylate and in the incorporation of 5-fluorouracil into RNA. These increases are correlated with increased concentrations of intracellular phosphoribosylpyrophosphate. It is proposed that the enhanced formation of ribonucleotides of 5-fluorouracil and the subsequent incorporation of these compounds into RNA in methotrexate-treated cells may account for synergism between these agents.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cadman, E -- Heimer, R -- Davis, L -- New York, N.Y. -- Science. 1979 Sep 14;205(4411):1135-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/472732" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Drug Administration Schedule ; Drug Synergism ; Fluorouracil/metabolism/*pharmacology ; Leukemia L1210 ; Methotrexate/*pharmacology ; Mice ; Phosphoribosyl Pyrophosphate/metabolism ; RNA, Neoplasm/metabolism ; Ribonucleotides/metabolism ; Thymidylate Synthase/metabolism
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  • 86
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    Ingested mineral fibers: elimination in human urine (1979)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1979-04-13
    Description: Sediment in human urine examined by transmission electron microscopy contains amphibole fibers which originate from the ingestion of drinking water contaminated with these mineral fibers. The ingestion of filtered water results in the eventual disappearance of amphibole fibers from urine. These observations provide the first direct evidence for the passage of mineral fibers through the human gastro-intestinal mucosa under normal conditions of the alimentary canal.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cook, P M -- Olson, G F -- New York, N.Y. -- Science. 1979 Apr 13;204(4389):195-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/219478" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aged ; Female ; Gastric Mucosa/metabolism ; Humans ; Intestinal Absorption ; Intestinal Mucosa/metabolism ; Male ; Middle Aged ; Silicon Dioxide/metabolism/*urine ; *Water Pollutants ; *Water Pollutants, Chemical
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  • 87
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    Preferential transmission of the Z deficient allele of alpha 1-antitrypsin (1979)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1979-07-27
    Description: The transmission of the Z deficient allele of alpha 1-antitrypsin was studied in 23 families, each with a single parent heterozygous for this allele. When the mother carried the Z allele, the distribution of phenotypes in the children did not differ significantly from the expected frequency. In contrast, when the father was the carrier, a significant increase of heterozygous phenotypes was observed in the children. This observation suggests that a selective advantage is associated with the expression of the Z allele in male gametes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chapuis-Cellier, C -- Arnaud, P -- New York, N.Y. -- Science. 1979 Jul 27;205(4404):407-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/313077" target="_blank"〉PubMed〈/a〉
    Keywords: *Alleles ; Child ; Female ; Heterozygote Detection ; Humans ; Male ; *Polymorphism, Genetic ; Sex Factors ; alpha 1-Antitrypsin/genetics ; *alpha 1-Antitrypsin Deficiency
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  • 88
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    Transfer of experimental allergic encephalomyelitis with guinea pig peritoneal exudate cells (1979)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1979-02-09
    Description: Incubation with specific antigen, myelin basic protein, greatly enhances the ability of guinea pig peritoneal exudate cells to transfer experimental allergic encephalomyelitis. Reproducibly successful transfers are obtained with 10(7) cells. With this relatively small number of cells, in vitro studies to determine the immunologic mechanisms involved in the disease process are now possible.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Driscoll, B F -- Kies, M W -- Alvord, E C Jr -- New York, N.Y. -- Science. 1979 Feb 9;203(4380):547-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/83676" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens ; Ascitic Fluid/*cytology/immunology ; Cell Adhesion ; Cell Division ; Encephalomyelitis, Autoimmune, Experimental/immunology/*transmission ; Exudates and Transudates/immunology ; Guinea Pigs ; Immunization, Passive ; Male ; Myelin Basic Protein/immunology
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  • 89
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    Baroreceptor activation reduces reactivity to noxious stimulation: implications for hypertension (1979)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1979-09-21
    Description: The hypothesis was tested that an acute rise of blood pressure may reduce reactivity to noxious stimuli through a baroreceptor-mediated reduction of cerebral arousal. When blood pressure was raised by an infusion of phenylephrine, rats showed less running to terminate or avoid noxious stimuli than during saline infusions. This effect was not seen in rats with denervated baroreceptors. The results suggest that a rise of blood pressure could have motivational consequences significant for human hypertension.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dworkin, B R -- Filewich, R J -- Miller, N E -- Craigmyle, N -- Pickering, T G -- New York, N.Y. -- Science. 1979 Sep 21;205(4412):1299-301.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/472749" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Avoidance Learning/drug effects/*physiology ; Blood Pressure/drug effects ; Heart Rate/drug effects ; Hypertension/*physiopathology ; Male ; Motivation/physiology ; Phenylephrine/pharmacology ; Pressoreceptors/*physiology ; Rats
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  • 90
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    Neuronal chemotaxis: chick dorsal-root axons turn toward high concentrations of nerve growth factor (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-11-30
    Description: Micropipettes containing 2 to 50 biological units of beta growth factor (NGF) were placed near growing axons of chick dorsal-root ganglion neurons in tissue culture. The axons turned and grew toward the NGF source within 21 minutes. This turning response to elevated concentrations of NGF appears to represent chemotactic guidance rather than a general enhancement of growth rate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gundersen, R W -- Barrett, J N -- New York, N.Y. -- Science. 1979 Nov 30;206(4422):1079-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/493992" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/growth & development/*physiology ; Cells, Cultured ; *Chemotaxis/drug effects ; Chick Embryo ; Dose-Response Relationship, Drug ; Ganglia, Spinal/physiology ; Nerve Growth Factors/*pharmacology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 91
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    Hormone changes triggered by aggression in a natural population of blackbirds (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-03-02
    Description: The concentrations of hormones in the plasma of male red-winged blackbirds caught at the height of an aggressive encounter are significantly different from those in males that have not recently engaged in aggressive behavior. Concentrations of luteinizing hormone in the plasma are decreased in the aggressive males, whereas androgen concentrations are affected in a more complex manner. Concentrations of corticoids do not appear to be affected by aggressive behavior.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harding, C F -- Follett, B K -- New York, N.Y. -- Science. 1979 Mar 2;203(4383):918-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/570304" target="_blank"〉PubMed〈/a〉
    Keywords: Aggression/*physiology ; Animals ; Animals, Wild ; Birds/*physiology ; Corticosterone/blood ; Dihydrotestosterone/blood ; Hormones/*blood ; Humans ; Luteinizing Hormone/blood ; Male ; Testosterone/blood
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 92
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    Amino acid sequence homology between histone H5 and murine leukemia virus phosphoprotein p12 (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-03-30
    Description: The amino terminal acid sequences of several mouse leukemia virus phosphoproteins (p12) show definite homology with the amino terminal conserved region of H5 histones, the phosphorylated nuclear proteins of nucleated erythrocytes. Differences in the amino acid compositions of the two groups of proteins seem to rule out the possibility that they evolved from a single common ancestral gene. The finding of sequence homology between viral p12's and cellular histones, however, is consistent with evolution of retrovirus structural proteins by a process of differentiation from preexisting cellular genes. The conserved primary and secondary structure at the amino terminal region, common to both groups of proteins, may be related to their common function of nucleic acid binding modulated by phosphorylation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Henderson, L E -- Gilden, R V -- Oroszlan, S -- New York, N.Y. -- Science. 1979 Mar 30;203(4387):1346-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/218289" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Carrier Proteins ; Cell Nucleus/analysis ; Chickens/blood ; Erythrocytes/analysis ; Geese/blood ; *Histones ; Leukemia Virus, Murine/*analysis ; Nucleic Acids/metabolism ; *Phosphoproteins ; Structure-Activity Relationship ; *Viral Proteins
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 93
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    Cerebral specialization, writing posture, and motor control of writing in left-handers (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-09-21
    Description: It has been suggested that the inverted hand position of left-handers during writing indicates the left hemisphere of their brain is linguistically specialized and that the writing of these left-handers may be controlled via ipsilateral pathways. Electroencephalograph alpha asymmetry measures at central and parietal leads, as well as dichotic tests, differentiated right-handers from left-handers, but not inverters from noninverters. Electroencephalograph differences between hand posture groups did appear, but only at occipital leads during reading and writing tasks. Regardless of hand posture or speech lateralization, the right central region of the brain is significantly involved in the control of left-handed writing.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Herron, J -- Galin, D -- Johnstone, J -- Ornstein, R E -- New York, N.Y. -- Science. 1979 Sep 21;205(4412):1285-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/472745" target="_blank"〉PubMed〈/a〉
    Keywords: Auditory Perception/physiology ; Brain/*physiology ; Cognition/physiology ; Female ; *Functional Laterality ; Humans ; Male ; Movement ; *Posture ; Speech/physiology ; Visual Perception/physiology ; *Writing
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 94
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    Induction of copulatory behavior in sexually inactive rats by naloxine (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-04-13
    Description: The intraventricular injection of D-alanine-methionine-enkephalinamide (D-Ala2-Met-enkephalinamide), a synthetic analog of Met-enkephalin that is resistant to enzymatic degradation, inhibits copulatory behavior in sexually vigorous male rats in doses which do not influence motor activity or feeding behavior. This effect is prevented by naloxone, a specific inhibitor of opioid receptors. In addition, injections of naloxone induce copulatory behavior in sexually inactive male rats. These results suggest that endorphins play an important role in the regulation of sexual behavior.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gessa, G L -- Paglietti, E -- Quarantotti, B P -- New York, N.Y. -- Science. 1979 Apr 13;204(4389):203-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/432642" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Copulation/*drug effects ; Endorphins/*pharmacology ; Enkephalins/*pharmacology ; Feeding Behavior/drug effects ; Male ; Motor Activity/drug effects ; Naloxone/*pharmacology ; Rats
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 95
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    Vascular smooth muscle cell kinetics: a new assay for studying patterns of cellular proliferation in vivo (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-08-31
    Description: A new quantitative assay for studying the kinetics of vascular smooth muscle cells in vivo is reported. The assay was used to determine the specific activity of DNA from rabbit aortic smooth muscle cells stimulated to grow by removal of the endothelial layer. The specific activity of the DNA was correlated with the rate of tritiated thymidine incorporation as measured by autoradiography and with the rate of DNA synthesis as estimated by direct measurement of cellular proliferation. Smooth muscle cells exhibit a 24-hour latent period in vivo prior to DNA synthesis; the synthesis peaks at 48 hours and then rapidly declines. The decline in DNA synthesis is not related to endothelial regrowth, and may be of homeostatic significance in limiting luminal stenosis. The assay offers a rapid and reliable alternative to autoradiographic and morphometric techniques for evaluating growth kinetics and growth regulation in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goldberg, I D -- Stemerman, M B -- Schnipper, L E -- Ransil, B J -- Crooks, G W -- Fuhro, R L -- New York, N.Y. -- Science. 1979 Aug 31;205(4409):920-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/472713" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aorta/*cytology ; Arteriosclerosis/metabolism/pathology ; Cell Division ; DNA/biosynthesis ; Endothelium/cytology ; Male ; Muscle, Smooth/*cytology/metabolism ; Rabbits
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 96
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    Electroencephalogram correlates of higher cortical functions (1979)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1979-02-16
    Description: By means of two-stage, nonlinear multivariate pattern recognition, electroencephalograms (EEG's) were analyzed during performance of verbal and spatial tasks. Complex scalp distributions of theta-, beta-, and, to a lesser extent, alpha-band spectral intensities discriminated between the two members of a pair of tasks, such as writing sentences and Koh's block design. Small EEG asymmetries were probably attributable to limb movements and other uncontrolled noncognitive aspects of tasks. Significant EEG differences beteeen cognitive tasks were eliminated when controls for inter-task differences in efferent activity, stimulus characteristics, and performance-related factors were introduced. Each controlled task was associated with an approximately 10 percent reduction, as compared with visual fixation, in the magnitude of alpha- and beta-band spectral intensity. This effect occurred bilaterally and was approximately the same over occipital, parietal, and central regions, with some minor difference over the frontal region in the beta band. With these controls, no evidence for lateralization of different cognitive functions was found in the EEG.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gevins, A S -- Zeitlin, G M -- Doyle, J C -- Yingling, C D -- Schaffer, R E -- Callaway, E -- Yeager, C L -- New York, N.Y. -- Science. 1979 Feb 16;203(4381):665-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/760212" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Cerebral Cortex/*physiology ; Cognition/*physiology ; *Electroencephalography ; Female ; *Functional Laterality ; Humans ; Male ; Memory/physiology ; Movement ; Pattern Recognition, Visual/physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 97
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    Effect of beta-endorphin on calcium uptake in the brain (1979)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1979-10-05
    Description: The uptake of 45Ca2+ by nerve-ending fractions from brains of mice was inhibited in vitro by 10(-9)M concentrations of beta-endorphin and in mice injected intraventricularly with 7 picomoles of beta-endorphin. That the effect was a specific opiate agonist response of beta-endorphin was demonstrated by use of the opiate antagonist, naloxone, which reversed the action. A role for beta-endorphin in the regulation of calcium flux and neurotransmitter release should be considered.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guerrero-Munoz, F -- de Lourdes Guerrero, M -- Way, E L -- Li, C H -- New York, N.Y. -- Science. 1979 Oct 5;206(4414):89-91.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/39340" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Transport/drug effects ; Calcium/*metabolism ; Dose-Response Relationship, Drug ; Drug Tolerance ; Endorphins/antagonists & inhibitors/*pharmacology ; Male ; Mice ; Naloxone/pharmacology ; Neurotransmitter Agents/metabolism ; Rats ; Synaptosomes/*drug effects/metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 98
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    Cerebral norepinephrine: influence on cortical oxidative metabolism in situ (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-10-05
    Description: Unilateral lesion of the locus coeruleus and the resultant norepinephrine depletion in the ipsilateral cerebrum alters the relationship between cerebral metabolic demands and local delivery of oxygen and substrates. This effect of norepinephrine depletion is demonstrated by slower recovery of the redox ratio of cytochrome a,a3 during increased metabolic demands induced by local cortical stimulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harik, S I -- LaManna, J C -- Light, A I -- Rosenthal, M -- New York, N.Y. -- Science. 1979 Oct 5;206(4414):69-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/482927" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cerebral Cortex/*metabolism ; Cytochromes/*metabolism ; Energy Metabolism ; Evoked Potentials ; Locus Coeruleus/*physiology ; Male ; Norepinephrine/*physiology ; Oxidation-Reduction ; Rats ; Spectrophotometry
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 99
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    Human skin fibroblasts derived from papillary and reticular dermis: differences in growth potential in vitro (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-05-04
    Description: Papillary fibroblasts, when compared to reticular fibroblasts from the same skin specimen, exhibit greater proliferative capacities in vitro. These results demonstrate a difference in function between morphologically similar cells obtained from the same tissue. Such findings represent an important consideration in the study of cell aging in vitro.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harper, R A -- Grove, G -- New York, N.Y. -- Science. 1979 May 4;204(4392):526-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/432659" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Division ; Female ; Fibroblasts/cytology ; Humans ; Male ; Skin/*cytology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 100
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    Ketone bodies are selectively used by individual brain regions (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-07-20
    Description: Close study of 3-hydroxybutyrate uptake by brain suggests that its metabolism is limited by permeability. Furthermore, the permeability characteristics vary from region to region; areas known to have no blood-brain barrier show the highest rate of utilization. The results imply that rather than substitute fuels, ketone bodies should be considered supplements which partially supply specific areas but are incapable of supporting the entire energy requirement of all brain regions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hawkins, R A -- Biebuyck, J F -- New York, N.Y. -- Science. 1979 Jul 20;205(4403):325-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/451608" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood-Brain Barrier ; Brain/*metabolism ; Glucose/metabolism ; Hydroxybutyrates/metabolism ; Ketone Bodies/*metabolism ; Male ; Rats ; Starvation/metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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