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  • Autoradiography  (4)
  • Cadmium  (4)
  • Springer  (8)
  • American Association for the Advancement of Science
  • Annual Reviews
  • Elsevier
  • Springer Science + Business Media
  • 1980-1984  (8)
  • 1981  (8)
Collection
Keywords
Publisher
  • Springer  (8)
  • American Association for the Advancement of Science
  • Annual Reviews
  • Elsevier
  • Springer Science + Business Media
Years
  • 1980-1984  (8)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Histochemical, cytochemical and autoradiographic studies on the rostellum ofHymenolepis diminuta (1981)
    Springer
    Parasitology research 64 (1981), S. 335-345 
    Details
    ISSN: 1432-1955
    Keywords: Hymenolepis diminuta ; Autoradiography ; Ultracytochemistry ; Histochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Histochemical studies on the rostellum ofHymenolepis diminuta revealed diastase-stable, protein/neutral carbohydrate-rich material localized in the rostellum tegument. The remainder of the rostellum, primarily composed of the glycogen-rich myocytons of the rostellum musculature, is protein-poor, but rich in diastase-labile, neutral and acidic carbohydrates. Ultrastructural cytochemical studies, using the periodic acid-thiocarbohydrazideosmium (PATCO) technique, indicated that the granules of the rostellar tegumental cytons and distal cytoplasm are carbohydrate-rich. Lipids are present in the rostellar myocytons but not in the tegumental cytons. Autoradiography using a pulse-labeling with [3H]leucine revealed an apical translocation of tegumental granules, but at a slower rate than had been reported for the strobilar tegument of the same organism. Neither [3H]galactose nor [3H]glucose were incorporated into the rostellar tegumental granules. The function of the secretory glycoprotein(s) produced in the rostellar tegument and its (their) possible role in the regulation of maturation and/or strobilization remain enigmatic.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00927380
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  • 2
    Electronic Resource
    Electronic Resource
    Synthesis of the intranuclear crystals in Scolopendrium vulgare (L.) SM (1981)
    Springer
    Planta 152 (1981), S. 137-144 
    Details
    ISSN: 1432-2048
    Keywords: Autoradiography ; Intranuclear crystals ; Nucleus, crystolo-Protein transfer-Pteridophytes ; Scolopendrium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Proteinaceous intranuclear crystals are found in the fern Scolopendrium vulgare. During mitosis these crystals are eliminated from the nucleus into the cytoplasm, where they are dissolved. New crystals appear in the nucleus. The site of synthesis of intranuclear crystal proteins was investigated using quantitative ultrastructural autoradiography after incubation with tritiated lysine. The results suggest a migration of cytoplasmic proteins to the nucleus, part of which would then be incorporated into the intranuclear crystals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00391185
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  • 3
    Electronic Resource
    Electronic Resource
    Environmental quality criteria: Some considerations (1981)
    Springer
    Environmental management 5 (1981), S. 191-205 
    Details
    ISSN: 1432-1009
    Keywords: Pollutant toxicity ; Water Quality Criteria ; Microbemediated ecological processes ; Ecological dosage 50% (EcD50) ; Cadmium ; Phenol ; Physicochemical environmental factors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The physicochemical characteristics of the recipient environment into which chemical contaminants are deposited may influence their chemical speciation, mobility, bioavailability, and toxicity. In formulating Water Quality Criteria, the Environmental Protection Agency of the United States (EPA) considered the modifying effect of abiotic environmental factors on pollutant toxicity in an innovative regulatory approach. Scientific knowledge of the interactions and correlations between pollutant toxicity and abiotic factors remains limited. Recognition of the influence of the physicochemical characteristics of the recipient environment on pollutant toxicity has implications for the eventual formulation of regional, rather than uniform and national, criteria. In addition, in developing Water Quality Criteria that incorporate the effects of pollutants on “aquatic life,” EPA primarily focused on toxicity to aquatic animals and plants (including unicellular algae). The effects of pollutants on microbe-mediated ecological processes that are necessary for maintaining the state and quality of the ecosphere (such as biogeochemical cyclings, litter decomposition, and mineralization) were not included in the formulation of the Water Quality Criteria. To facilitate the recognition and quantification of adverse effects of pollutants on these ecological processes, the development of a computation, termed the “ecological dosage 50%” (EcD50) is recommended. Such a formulation could also be applied to setting environmental quality criteria for terrestrial ecosystems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01873278
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  • 4
    Electronic Resource
    Electronic Resource
    Influence of lead, cadmium, and nickel on the growth ofMedicago sativa (L.) (1981)
    Springer
    Plant and soil 60 (1981), S. 223-236 
    Details
    ISSN: 1573-5036
    Keywords: Alfalfa ; Cadmium ; Lead ; Nickel ; Tissue concentration ; Yield depressions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Alfalfa (Medicago sativa L.), cv. Iroquois, was grown in the greenhouse in soils amended with additions of either lead, cadmium, or nickel. Metals, at rates varying from 0–250 ppm, were not uniformly mixed but were placed close to the soil surface so as to simulate surface deposition. In one series of experiments the sulphate salt of each metal and two soils were used. In a second series of experiments the nitrate salts and one soil were used. Neither salt of lead significantly depressed alfalfa yields. Both salts of either cadmium or nickel significantly depressed yields. Additions of all metals to the soil resulted in both increased metal uptake and concentrations in alfalfa tissue, particularly for cadmium and nickel. The highest tissue concentrations of cadmium and nickel were associated with plant stunting and necrosis. However, at rates of 125 ppm and less, substantial increases in cadmium and nickel concentrations were obtained frequently without serious yield reductions. Generally, metal concentrations were greatest in the first harvest following metal application. Concentration and uptake of lead and cadmium were greater when the metal was applied to the soil as nitrate than when applied as the sulphate salt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374107
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  • 5
    Electronic Resource
    Electronic Resource
    The influence of lead, cadmium, and nickel on the growth of ryegrass and oats (1981)
    Springer
    Plant and soil 62 (1981), S. 81-89 
    Details
    ISSN: 1573-5036
    Keywords: Cadmium ; Lead ; Nickel ; Oats ; Ryegrass ; Tissue concentration ; Yield depression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A 24 factorial experiment was conducted under greenhouse conditions. Factors and levels in the experiment were soil pH at 4.5 and 6.4, and cadmium, lead, and nickel added to the soil to provide soil concentrations of 50, 250, and 50 ppm, respectively, above background levels. Two species were grown in succession in the same experimental pots. Ryegrass (Lolium hybridum Hausskn. cv. Tetrelite) was harvested three times and then one crop of oats (Avena sativa L. cv. Garry) was grown and harvested. Plant tissue concentrations of cadmium, lead, and nickel were monitored throughout the experiment. Addition of cadmium to the soil lowered the dry matter yields in all three ryegrass harvests and also reduced the yield of oat grain. The application of lead nitrate to the soil enhanced the yield of ryegrass obtained at the first harvest and also increased the yield of oat grain. Nickel, added to the soil at 50 ppm, was relatively innocuous to ryegrass and oats. The presence of added cadmium, lead, or nickel to the soil resulted in enhanced tissue concentrations of these metals in both ryegrass and oats. This effect was particularly enhanced by a soil pH of 4.5. A single exception to this observation was that lead was not detected, under any of the conditions of this experiment, in oat grain. The presence of lead in the soil enhanced cadmium concentrations in ryegrass tissues. The presence of cadmium in the soil decreased lead tissue concentrations in ryegrass and oat straw. Soil pH interacted with both nickel and lead in the second ryegrass harvest with subsequent changes in tissue cadmium concentrations. At a soil pH of 4.5, the presence of added lead or nickel to the soil significantly increased the ryegrass tissue cadmium concentration beyond that observed at a soil pH of 6.4 with or without enhanced nickel or lead concentrations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02205027
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  • 6
    Electronic Resource
    Electronic Resource
    Activation of potassium-dependent H+ efflux from mitochondria by cadmium and phenylarsine oxide (1981)
    Springer
    Journal of bioenergetics and biomembranes 13 (1981), S. 425-431 
    Details
    ISSN: 1573-6881
    Keywords: Cadmium ; phenylarsine oxide ; mitochondria ; H+ translocation ; potassium ion ; uncoupling ; dithiol ; monothiol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Physics
    Notes: Abstract Addition of Cd2+ or phenylarsine oxide (PhAsO) to respiring rat liver mitochondria results first in acidification of the medium (H+ efflux) followed by disappearance of H+ (discharge of the pH gradient or uncoupling). The first phase of H+ efflux is dependent upon the presence of K+ in the medium, and is not seen in the presence of valinomycin, which is consistent with the conclusion that H+ efflux is linked to membrane potential-dependent uptake of K+. These effects are abolished by low levels of 2,3-dimercaptopropanol but potentiated by excess of 2-mercaptoethanol, showing involvement of a dithiol type of group in the response. Mersalyl produces only the H+ efflux, and subsequent addition of Cd2+ or PhAsO produces collapse of the ΔpH.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00743214
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  • 7
    Electronic Resource
    Electronic Resource
    Bilaterally asymmetrical uptake of [14C]2-deoxyglucose by the octavo-lateralis complexes in flatfish (1981)
    Springer
    Cell & tissue research 214 (1981), S. 659-662 
    Details
    ISSN: 1432-0878
    Keywords: Vestibular system ; Postural control ; Deoxyglucose method ; Autoradiography ; Flatfish
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary [14C]2-deoxyglucose uptake by neurons located in the octavo-lateralis complex of adult flatfish is asymmetrical on the two sides of the brain. It appears that the neuronal activity on the side oriented upward is higher than that on the side of the brain facing downward. This finding may be significant with respect to the mechanisms of metamorphosis of flatfish and may account for the peculiar fact that these animals swim on one body side during adult live.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00233505
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  • 8
    Electronic Resource
    Electronic Resource
    Evaluation of the effects of sensory denervation on osteoblasts by 3H-proline autoradiography (1981)
    Springer
    Cell & tissue research 217 (1981), S. 569-576 
    Details
    ISSN: 1432-0878
    Keywords: Autoradiography ; 3H-proline ; Osteoblasts ; Denervation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The inferior alveolar nerve was unilaterally resected in 30-day-old mice; other animals were unilaterally sham-operated. At 15, 30, 60, 90, or 150 days after surgery, the mice were injected with 2μCi of 3H-proline (sp. act. 1.0 Ci/mM) per g of body weight and killed 15, 30, or 60 min later. Autoradiographs were prepared from 5μm decalcified sagittal sections of mandibles and grain counts made over periosteal osteoblasts mesial to the first molar. In denervated mandibles, osteoblasts incorporated less isotope compared to controls with differences being maximal at the early intervals. These differences became attenuated with time, possibly due to an intrinsic compensatory mechanism, secondary to neurotrophic regulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00219365
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