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  • 1
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] As we have shown that pancreas slices when incubated in vitro respond to certain stimuli (with insulin secretion) we thought it would be interesting to find out if p-hydroxybutyrate and citrate, when added to the buffer surrounding pancreas slices, produce an increase in secretion of insulin. ...
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] These results inspired us to examine the possible correlation of the effects of insulin in vitro and of muscular contraction in vitro on uptake of glucose by the frog recti abdominis muscle. Frogs (Rana esculenta L.) weighing 28-35 gm. were used. After killing, the muscles were removed and ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 193 (1962), S. 1292-1292 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The work reported here was carried out in order to determine the influence of the muscular surface on the disappearance of the glucose from the incubation medium, and to estimate the mathematical correlation between these two variables. Female rats (130-150 gm.) from our own colony were ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 197 (1963), S. 1210-1210 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Animals from our rat colony (140-160 g) were intravenously injected with ATP 1-7 x 10~2 M (total volume 0-25 ml., pH 7) and killed immediately after the injection (10-20 sec). Tho evaluation of the plasma insulin effect and glucose uptake of the diaphragm and epididymal fat were carried out ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 197 (1963), S. 1304-1304 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A piece of rabbit pancreas weighing 200 mg was incubated for 3 min at 37 C in Krebs-Henseleit buffer containing ATP l x 10-3 M and another piece of the same weight (± 5 mg) was incubated in the same buffer but containing hydrolysed ATP (l x 10~3 M-N/10 hydrochloric acid for 15 min at 100 C) ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 203 (1964), S. 758-758 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A piece of rabbit pancreas weighing 250 mg was incubated in Krebs-Henseleit buffer containing b-hydroxy butyrate 1 x 10?12 M plus glucose 0.6 mg/ml. and another piece of the same weight ( 1 mg) was incubated in the same buffer containing glucose 0-6 mg/ml. for 30 min at 37 C. After washing, the ...
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 3 (1967), S. 435-442 
    ISSN: 1432-0428
    Keywords: Plasma insulin ; Pancreatic insulin ; Rabbit ; Pregnancy ; A-cells ; B-cells ; Electron microscopy ; Glucagon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Le contenu en insuline du plasma de lapins normaux et en gestation a été étudié par rapport à la quantité d'insuline qui pouvait être extraite de leurs pancréas. — Le contenu plasmatique moyen en insuline des lapins normaux, utilisés comme témoins, était de 25μU/ml (entre 18 et 33) et l'insuline extraite de leurs pancréas était de 3.56μg/100 mg de tissu (entre 3.33 et 3.76). — Lorsque la gestation était à un stade avancé, le contenu en insuline dans le sang s'élevait à 56μU/ml (entre 37 et 81), alors que l'insuline extraite du pancréas tombait à 1.17μg/100 mg de tissu (entre 0.65 et 1.73). — L'ultrastructure des cellules A et B pendant la gestation a également été étudiée. La teneur des granules B en insuline diminue et les cellules A présentent des signes évidents d'une haute activité. — Les observations précédentes suggéreraient que lors de la gestation avancée, une synthèse et une sécrétion de glucagon accrues augmentent l'activité sécrétrice du pancréas en insuline.
    Abstract: Zusammenfassung Bei normalen und graviden Kaninchen wurden die Plasma-Insulinspiegel und das aus dem Pancreas extrahierbare Insulin gemessen. — Die mittleren Insulinspiegel der normalen Kontrolltiere lagen bei 25μE/ml (zwischen 18–33), das Pankreasinsulin bei 3.56μg/100 mg Gewebe (3.33–3.76). Die Seruminsulin-spiegel steigen während der späten Schwangerschafts-stadien auf 56μE/ml (37–81) an und das extrahierbare Pancreas-Insulin nimmt auf 1.17μG/100 mg Gewebe (0.65–1.73) ab. — Wir untersuchten die Feinstruktur der Alpha- und Beta-Zellen während der Schwangerschaft: Dabei nahm das in den Beta-Granula gespeicherte Insulin ab und die Alpha-Zellen zeigten eindeutige Zeichen gesteigerter Aktivität. Die oben skizzierten Befunde könnten daraufhin deuten, daß während der späten Schwanger-schaftsstadien eine gesteigerte Glucagon-Synthese und Sekretion die insulinsekretorische Aktivität der Bauchspeicheldrüse erhöht.
    Notes: Summary Plasma insulin levels and extractable insulin of the pancreas of normal and pregnant rabbits have been studied. — The mean plasma insulin of non-pregnant controls was 25μU/ml (range 18 to 33); extractable pancreas insulin was 3.56μg/100 mg tissue (3.33 to 3.76). — The insulin level in the blood increases during late pregnancy to 56μU/ml (range 37 to 81) and the extractable pancreatic insulin decreases to 1.17μg/100 mg tissue (0.65 to 1.73). — The fine structure of B and A-cells has been studied in pregnancy: insulin stored in B granules decreases and the A-cells show definite signs of increased activity. — The above findings might be interpreted as suggesting that in late pregnancy an increased synthesis and secretion of glucagon augment the insulin secretory activity of the pancreas.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 15 (1959), S. 439-440 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Résumé La moelle épinière ne paraît pas sensible à l'insulinein vitro si elle provient d'un animal décapité alors qu'elle l'est de façon significative (P 〈 0,01) si l'animal était anesthésié avec un mélange de CO2/O2 à 50%.
    Type of Medium: Electronic Resource
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