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  • Lepidoptera  (28)
  • hypertension  (26)
  • Scolytidae
  • Wheat
  • Springer  (93)
  • 2005-2009
  • 1980-1984  (78)
  • 1975-1979  (15)
  • 1965-1969
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  • 1
    Electronic Resource
    Electronic Resource
    Ecdysteroids during pupal development of female Xyleborus ferrugineus (1981)
    Springer
    Entomologia experimentalis et applicata 30 (1981), S. 151-156 
    Details
    ISSN: 1570-7458
    Keywords: Xyleborus ferrugineus ; pupae ; ecdysteroids ; pharate adult ; radioimmunoassay ; Coleoptera ; Scolytidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Der Ecdysteroidtiter weiblicher Puppen von Xyleborus ferrugineus (Fabr.) wurde geschätzt, indem ganze Tiere homogenisiert und radioimmunologisch untersucht wurden. Ein ausgeprägtes Maximum an Ecdysteroiden wurde bei 36 Stunden Puppenent-wicklung beobachtet (743 pg/mg Körpergewicht). Der Titer nahm ab auf 299 pg/mg im Pharatstadium und auf 193 pg/mg unmittelbar vor Schlüpfen der Adulten. Qualitative Studien mit HPLC ergaben in frischen Puppen ein Verhältnis von 3:1 Ecdyson zu 20-Hydrooxyecdyson. Pharatstadien enthielten vor allem 20-Hydrooxyecdyson. Das beobachtete einzige Maximum im Titer stimmt überein mit den Resultaten bei andern untersuchten Coleopteren.
    Notes: Abstract Ecdysteroid titers were estimated on the whole body homogenates of Xyleborus ferrugineus (Fabr.) female pupae during development by radioimmunoassay. A distinct peak of ecdysteroids was observed at 36-hr pupal development (743 pg/mg body wt). Titer declined to 299 pg/mg by the pharate adult stage and to 193 pg/mg body wt just before adult emergence. Qualitative studies by HPLC revealed a ratio of 3:1 ecdysone to 20-hydroxyecdysone in the initial pupal stage. Pharate adults had mainly 20-hydroxyecdysone. The observed single peak in ecdysteroid titer agrees with findings in other studied coleopteran species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00300880
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  • 2
    Electronic Resource
    Electronic Resource
    Repellency of pheromones released by females of Heliothis armigera and H. zea to females of both species (1981)
    Springer
    Entomologia experimentalis et applicata 30 (1981), S. 123-127 
    Details
    ISSN: 1570-7458
    Keywords: Sex Pheromones ; Repellent ; Heliothis armigera ; Heliothis zea ; Lepidoptera ; Noctuidae ; cotton bollworm ; corn earworm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé L'examen en olfactomètre a porté sur les réactions face à d'autres femelles de la même espèce, de femelles vierges ou ayant copulé d'Heliothis armigera Hübner et H. zea Boddie. Le lot comprenait 8 femelles, vierges ou ayant copulé en présence d'une femelle vierge ou ayant copulé. Les 4 combinaisons possibles de femelles vierges et de femelles ayant copulé ont été examinées avec 12 répétitions pour chaque espèce. Un extrait de l'extrémité de l'abdomen de femelles vierges d'une espèce a été présenté aux femelles de l'autre espèce pour examiner les possibilités de réactions interspécifiques aux phéromones. Pour chaque espèce, les réactions interspécifiques de répulsion entre femelles ont été hautement significatives par rapport aux témoins, à l'exception toutefois des réactions de femelle ayant copulé face à des femelles ayant elles aussi copulé. Les répulsions moyennes chez H. armigera et H. zea pour les 8 femelles de chaque expérience ont été: a) vierges en présence d'une vierge: 7,33 et 7,66; b) vierges en présence d'une femelles ayant copulé: 5,76 et 5,58; c) femelles ayant copulé en présence d'une vierge: 4,67 et 4,83. Les différences sont hautement significatives entre chaque paire de moyennes et entre chaque paire et le lot témoin; 3,17; 3,17; 3,42; 4,00 pour H. armigera; 3,17; 3,50; 2,83 et 3,75 pour H. zea. Les femelles vierges des deux espèces, H. armigera et H. zea ont présenté une réaction de répulsion en présence d'un extrait de l'abdomen de l'autre espèce; les répulsions moyennes étant respectivement 5,53 et 5,33 contre 3,83 et 3,58 pour le lot trémoin. On peut en conclure que ces répulsions doivent entraîner une tendance à la répartition uniforme.
    Notes: Abstract An olfactometer was used to determine the effect of pheromones released by females of the bollworms Heliothis armigera (Hübner) and H. zea (Boddie) on females of the same species. Four combinations of virgin and mated females were tested for repellency of one to the other. Evidence is presented that females of the two bollworms were repelled by females of the same species. In addition, extracts of virgin female abdomens of each species repelled virgin females of the other species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00300876
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  • 3
    Electronic Resource
    Electronic Resource
    Pharmacokinetics of tolamolol in the treatment of hypertension (1977)
    Springer
    European journal of clinical pharmacology 12 (1977), S. 171-174 
    Details
    ISSN: 1432-1041
    Keywords: Tolamolol ; hypertension ; pharmacokinetics ; mean steady-state concentration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Tolamolol was administered in a “double-blind” study to fifteen hypertensive patients by dose-titration against arterial blood pressure. Mean steady-state plasma tolamolol concentrations (Css) were determined for each patient from the area under the plasma concentration — time curve during a dosage interval whilst patients were receiving optimal tolamolol doses. No significant correlation was observed between daily tolamolol dose and Css; the relationship between fall in lying mean arterial pressure and Css also failed to reach conventional levels of statistical significance, but Css was observed to be correlated with the fall in standing pressure. The results suggest that plasma concentrations in excess of 200 ng/ml may be required to achieve an effective hypotensive response with the drug.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00609855
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  • 4
    Electronic Resource
    Electronic Resource
    Once daily indapamide in the treatment of the elderly and young hypertensive (1984)
    Springer
    European journal of clinical pharmacology 27 (1984), S. 397-405 
    Details
    ISSN: 1432-1041
    Keywords: indapamide ; hypertension ; cardiovascular reflexes ; diuretic effect ; blood pressure variability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Nine elderly and 11 young hypertensives underwent continuous ambulatory monitoring of blood pressure (BP), assessment of cardiovascular reflexes and M-mode echocardiography as hospital in-patients prior to treatment with once-daily indapamide (2.5 mg). They were followed as out-patients for 4 months during which time casual BP was measured at monthly intervals. The patients were then readmitted to hospital and studied using the same protocol under similar standardised conditions. The results showed that indapamide reduced casual and ambulatory BP in both young and elderly although the most marked effect was seen on systolic BP. Assessment of cardiovascular reflexes indicates that at least part of the hypotensive action of indapamide is due to a diuretic effect. Treatment with indapamide has comparable results on both young and elderly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00549585
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  • 5
    Electronic Resource
    Electronic Resource
    Dose-titrated, double-blind, cross-over comparison of a selective beta-blocker and methyldopa in the treatment of hypertension (1977)
    Springer
    European journal of clinical pharmacology 11 (1977), S. 159-162 
    Details
    ISSN: 1432-1041
    Keywords: Tolamolol ; methyldopa ; comparative trial ; hypertension ; beta-blockade
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The efficacy and toxicity of tolamolol and methyldopa in hypertensive patients has been compared by a dose-titrated, double-blind, cross-over study. Thirteen patients completed the trial. Within the dose ranges investigated (tolamolol — 300 mg/day — 900 mg/day; methyldopa — 750 mg/day — 2250 mg/day) both drugs produced significant falls in laying and standing, systolic and diastolic blood pressures. Although the hypotensive effects of methyldopa were more marked than tolamolol, these only achieved conventional (P〈0.05) levels of significance for lying blood pressure. There were no objective changes in haematological or biochemical indices during treatment with either drug, but patients complained of tiredness, weak limbs and mouth dryness significantly more during methyldopa treatment, than during either placebo or tolamolol therapy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00606404
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  • 6
    Electronic Resource
    Electronic Resource
    Characterization of the multigene family coding for HMW glutenin subunits in wheat using cDNA clones (1983)
    Springer
    Theoretical and applied genetics 67 (1983), S. 87-96 
    Details
    ISSN: 1432-2242
    Keywords: HMW glutenin subunit genes ; cDNA clones ; Tandem DNA repeats ; Chromosomal location ; Gene copy number ; Wheat ; Triticum aestivum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary cDNA clones encoding wheat HMW glutenin subunits have been isolated from a cDNA bank made to poly A+ RNA from developing wheat endosperm var. Chinese Spring. One such clone, pTag 1290, has enabled us to identify the HMW glutenin mRNA species. The DNA sequence of this clone has been partially determined and it contains several tandem DNA repeats. The sequence is discussed in relation to the generation of the HMW glutenin subunit gene family. Analysis of the organization of the HMW glutenin sequences in the wheat genome revealed that the genes encoding HMW glutenin subunits exist in low copy number and are located on the long arm of each of the homoeologous group 1 chromosomes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00303930
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  • 7
    Electronic Resource
    Electronic Resource
    Use of triple-labelled nutrient solution to study the effects of root-infecting fungi on uptake of potassium, calcium and phosphorus by wheat (1982)
    Springer
    Plant and soil 66 (1982), S. 405-410 
    Details
    ISSN: 1573-5036
    Keywords: Gaeumannomyces graminis ; Hydroponics ; Ion uptake ; Radionuclides ; Root pathogens ; Wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Triple-labelled nutrient solution was used to compare the effects of seven root-infecting fungi on uptake of K, Ca and P by wheat. Plants grown in sand or hydroponic culture were transferred to solutions that contained42K,45Ca and32P for 24 h, then dried, ashed and digested in 6M HCl. To distinguish radiation emitted by42K,45Ca and32P plant digests were counted on two channels of a liquid scintillation counter immediately and 7 days later, after the decay of42K radiation. Plants infected byGaeumannomyces graminis took up and translocated less K, Ca and P to their shoots than uninfected plants. Other root-infecting fungi had little effect on uptake of these ions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02183807
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  • 8
    Electronic Resource
    Electronic Resource
    Trapping the western pine beetle at and near a source of synthetic attractive pheromone Effects of trap size and position (1979)
    Springer
    Journal of chemical ecology 5 (1979), S. 519-531 
    Details
    ISSN: 1573-1561
    Keywords: Pinus ponderosa ; Dendroctonus brevicomis ; western pine beetle ; attractant ; pheromone ; behavior ; traps ; Coleoptera ; Scolytidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Western pine beetles were caught on unbaited sticky traps placed near a source ofexo-brevicomin, frontalin, and myrcene. Size of trap, distance and direction from the source of attractant, and height from the ground were varied. Significant differences in trap catch were observed in relation to each of the variables. Traps close to the source of attractant caught more beetles than traps farther from the source. Traps downwind of the source of attractant caught more beetles than did upwind traps. More males than females were trapped close to the source of attractant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987837
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  • 9
    Electronic Resource
    Electronic Resource
    Pheromonal attraction and allomonal interruption ofIps pini in California by the two enantiomers of ipsdienol (1980)
    Springer
    Journal of chemical ecology 6 (1980), S. 703-717 
    Details
    ISSN: 1573-1561
    Keywords: Scolytidae ; bark beetle ; Ips pini ; pheromone ; ipsdienol ; enantiomer ; interruption ; allomone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Air containing volatile compounds from around maleIps pini boring in ponderosa pine logs from California was condensed, fractionated by GC, and assayed in the laboratory and field. The only fraction that showed consistent activity in laboratory assays contained a single compound identified as ipsdienol (2-methyl-6-methylene-2,7-octadien-4-ol). Synthetic racemic ipsdienol showed no activity in either the laboratory or field. However, (−)-ipsdienol, the naturally occurring enantiomer, was attractive toI. pini in the laboratory and field, whereas (+)-ipsdienol interrupted the response ofI. pini to a natural source of attraction in field tests. (−)-Ipsdienol is a major component of the attractant pheromone of this species, since its level of activity in laboratory assays was quantitatively comparable to that of the condensed volatiles, and it was as attractive as maleI. pini boring in ponderosa pine in the field. (+)-Ipsdienol is a component of the pheromone of the competing species,I. paraconfusus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987680
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  • 10
    Electronic Resource
    Electronic Resource
    Sex attractant for three species of the genusOncocnemis: O. chandleri (Grt.),O. cibalis (Grt.), andO. mackiei (B. & Benj.) (Lepidoptera: Noctuidae) (1984)
    Springer
    Journal of chemical ecology 10 (1984), S. 1701-1706 
    Details
    ISSN: 1573-1561
    Keywords: Lepidoptera ; Noctuidae ; Oncocnemis chandleri ; Oncocnemis cibalis ; Oncocnemis mackiei ; (5E7Z)-5 ; 7-dodecadienyl acetate ; (Z)-7-dodecenyl acetate ; sex attractant
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Oncocnemis chandleri, O. cibalis, andO. mackiei were attracted to chemically baited traps in the field. In all three cases, (5E,7Z)-dodecadienyl acetate was a key component for attraction. Attraction ofO. chandleri to traps baited with the (5E,7Z)-dodecadienyl acetate was inhibited by addition of (Z)-7-dodecenyl acetate.O. cibalis required both (5E,7Z)-dodecadienyl acetate and (Z)-7-dodecenyl acetate for attraction. Electroantennogram responses for the three species are also reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987356
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