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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Macromolecules 17 (1984), S. 1578-1581 
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Bioelectrochemistry and Bioenergetics 17 (1987), S. 441-456 
    ISSN: 0302-4598
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 55 (1968), S. 39-40 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 4
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    Unknown
    Wiesbaden, etc. : Periodicals Archive Online (PAO)
    Hermes. 75 (1940) 237 
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 27 (1971), S. 397-397 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In conscious, trained dogs with double-barrelled fistuals of the oesophagus, an increase of the insulin concentration in the peripheral venous blood, without change of the glycaemia, was observed after sham-feeding with glucose.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 29 (1973), S. 884-885 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Die Hyperglykämie nach einmaliger stossartiger Glukoseinjektion bewirkt einen Durchblutungsanstieg der Bauchspeicheldrüse. Dieser wurde kontinuierlich mit einem elektromagnetischen Blutstrommesser bei narkotisierten Hunden registriet. Der Anstieg setzt sich aus 2 Abschnitten zusammen, wovon der erste unspezifisch auch in der A. femoralis auftritt.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 13 (1977), S. 269-272 
    ISSN: 1432-0428
    Keywords: Insulin secretion ; oral glucose ; reflex insulin secretion ; portal vein ; dog
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Concentrations of immunoreactive insulin activity and of blood glucose were measured in portal and peripheral venous blood in six conscious dogs after oral administration of 1.0 g/kg glucose. Portal venous samples were obtained either by chronic catheterization or by direct puncture of the portal vein through a London-cannula. Portal venous IRI was already significantly increased 5 min after the onset of the stimulus. Peripheral venous IRI pattern reflected this early increase, but the peripheral venous blood glucose level was unchanged. The results indicate that the early peripheral venous IRI increase reflects a pancreatic insulin secretory reflex.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-0428
    Keywords: Insulin secretion rate ; pancreatic blood flow ; mathematic model ; IRI concentration ; blood glucose ; glucose assimilation ; dog
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The pancreaticoduodenal and portal venous blood flows were recorded electromagnetically in anaesthetized dogs. Blood glucose and IRI were measured in the arterial, portal, and peripheral venous as well as in the intestinal venous blood. By a mathematical model the actual net IRI output of the whole pancreas was estimated. Under basal conditions it is 10.2±2.4 mU/min (n = 30; 26 kg mean body wt). After i.v. glucose injection, IRI output is rapidly enhanced. The biphasic nature of this reaction was unequivocally demonstrated by consideration of the ratio IRI output: blood glucose. Pancreaticoduodenal blood flow increases transiently in relation to the increased blood glucose concentration. The IRI secretion rate is well correlated with the blood glucose concentration and to the amounts of glucose or of blood reaching the whole pancreas. It is also correlated with the portal IRI concentration. The overall peripheral venous or arterial IRI concentrations are correlated with the IRI secretion rate, but not in all individual experiments. The different phases of IRI output (basal rate, stimulated output 1–10 min and 10–60 min) show no influence on each other, nor are they correlated with the peripheral IRI concentration area. Basal IRI output is negatively correlated with the glucose assimilation constants. These constants or the peripheral B G areas, however, are independent of the stimulated IRI output rate. However, both the assimilation constants and the peripheral BG areas are related to the peripheral IRI concentration areas. Hepatic uptake of insulin and dynamics of pancreatic blood flow seem to contribute considerably to the estimated correlation pattern.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 8 (1972), S. 111-116 
    ISSN: 1432-0428
    Keywords: Oral glucose tolerance ; insulin secretion ; reflex ; sham-feeding ; enterohormones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Des chiens éveillés et entraînés portant des fistules de l'oesophage ou de l'estomac ne présentent aucune élévation du sucre sanguin après alimentation simulée de glucose, néanmoins une augmentation considérablede la concentration insulinique dans le sang veineux périphérique apparaît. Celle-ci consiste en deux pics bref s entre la 5 e et la 10 e min et aussi entre la 15 e et la 25 e min. Ces deux pics apparaissent aussi après alimentation simulée d'eau potable, mais à un moindre degré. Leur ordre chronologique correspond aux pics précoces d'IRI que nous avons observés antérieurement, après administration orale de glucose chez des animaux intacts, avant l'élévation glycémique réelle. Après application de glucose dans l'ouverture aborale de la fistule chez des animaux portant une fistule de l'oesophage, il manque le premier pic d'IRI, le deuxième et le troisième pic (provoqués par résorption) apparaissent invariablement. Une insulino-sécrétion intensifiée, couplée à la prise de nourriture et induite par l'ingestion orale est suggérée et discutée dans le cadre de l'«entero-insular axis» du mécanisme de l'insulino-sécrétion.
    Abstract: Zusammenfassung Wache trainierte Hunde mit doppelläufigen Fisteln des Oesophagus oder des Magens zeigen nach Scheinfütterung mit Glucose keinen Blutzucker -anstieg, aber eine sichere Erhöhung des immunchemisch gemessenen Seruminsulins im peripheren Venenblut. Es wurden zwei kurzzeitige Peaks zwischen der 5. und 10. sowie der 15. und 25. min beobachtet. In geringerem Ausmaß fanden sich diese beiden Peaks auch nach Scheinfütterung mit Leitungswasser. Sie entsprechen in ihrer zeitlichen Anordnung den von uns früher beobachteten frühen Insulingipfeln nach oraler Glucosegabe an intakte Tiere vor dem eigentlichen Blutzuckeranstieg. Bei Glucoseverabfolgung in die aborale Fistelöffnung von Oesophagusfistelträgern fehlt der erste IRI-Gipfel, der zweite und der dritte (resorptionsbedingte) sind unverändert ausgeprägt. Es wird eine von Rezeptoren der Mundhöhle ausgelöste Vorwärtskopplung der Insulinsekretion bei oraler Verabfolgung stimulierender Substanzen angenommen und im Rahmen der „enteroinsulinären Achse“ des Insulininkretionsmechanismus diskutiert.
    Notes: Summary After sham-feeding of glucose, conscious trained dogs bearing double-barrelled fistulas of the oesophagus or of the stomach do not show any blood sugar increase. Nevertheless their IRI-levels in the peripheral venous blood increased considerably. This increase consists of two peaks of short duration between the 5th and the 10th as well as the 15th and the 25th min. Such IRI-peaks oceured also after sham-feeding of tap water, but to a smaller extent. Their temporal order corresponds to the early IRI-peaks after oral glucose administration in intact animals, but before the blood glucose increase which was observed by us previously. After the application of glucose into the oral opening of the oesophageal fistula the first IRI-peak does not occur, the second and the third peaks appeared to the same extent. A feed-forward of insulin secretion induced by oral ingestion is suggested. It may be interpreted within the scope of the “entero-insular axis” of the mechanism of insulin secretion.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 7 (1971), S. 6-9 
    ISSN: 1432-0428
    Keywords: Annual rhythm ; eviscerated rabbit ; isolated heart ; insulin action ; glucose uptake ; glycogen ; seasonal variation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Sur le lapin éviscéré et néphrectomisé et sur le eoeur de rat isolé et perfusé, on a constaté une périodicité circannuelle de l'effet de l'insuline sur la captation du glucose et sur le contenu en glyeogène. Dans des conditions méthodologiques constantes, la même dose de la même préparation insulinique atm effet diminué d'environ 50% pendant les mois d'été. Ces relations ont été prouvées par des observations continues pendant 14 mois et furent projetées sur une année calendaire pour la mise en valeur. Elles sont considérées comme l'expression d'un rythme endogène de l'organisme entier.
    Abstract: Zusammenfassung An eviszerierten nephrektomierten Kaninchen und isolierten perfundierten Rattenherzen wurde eine circannuale Periodizität des Ausmaßes von Insulineffekten auf die Glueoseaufnahme sowie den Glycogenbestand gefunden. Unter konstanten methodischen Gegebenheiten wirkt dieselbe Dosis des gleichen Insulin-präparates in den Sommermonaten etwa 50% weniger, als in den Wintermonaten. Diese Verhältnisse sind durch kontinuierliche Beobachtungen über 14 Monate belegt und zur Auswcrtung auf ein Kalenderjahr projiziert. Sie werden als Ausdruck einer endogenen Rhythmizität des Organismus betrachtet.
    Notes: Summary A seasonal variation in glucose uptake and glycogen content was found in eviscerated nephrectomized rabbits and in isolated perfused rat hearts. In the same methodological circumstances the same dose of the same insulin preparation showed a reduction in effect of about 50% in the summer months. These relations were established by means of continuous observations for 14 months, which have been projected on one calendar year for interpretation. They are accounted for as an expression of the endogenous rhythm of the whole organism.
    Type of Medium: Electronic Resource
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