Glomerular filtration rate and kidney blood flow in alloxan and streptozotocin diabetic rats.

Glomerular filtration rate (GFR), cardiac output, regional blood flow and kidney weight were measured in alloxan and streptozotocin diabetic rats at different times after the administration of diabetogen. A high GFR was found together with increased kidney weight and reduced blood flow.     

Effect of continuous light on the blood and urinary sugar levels in alloxan diabetic rats

Summary Continuous light decreases the rise in blood glucose and the excretion of urinary glucose, along with increased urine volume, in alloxan diabetic rats.Acknowledgment. The authors' thanks are due to Prof. A. K. Maiti, Department of Physiology, Calcutta University for his constant encouragement.     

Activators of serum lipoprotein lipase in alloxan diabetic rats

Summary The amount of free fatty acid (FFA) liberated with intralipid in post-heparin guinea-pig serum, when serum from alloxan diabetic rat is incubated, is higher than that liberated when serum from healthy rats is used. The above effect is probably due to larger quantities of lipoprotein lipase present in the diabetic serum.     

Small intestinal absorption ofd-galactose and water in fasted and alloxan diabetic rats

Zusammenfassung Leerdarm- und Krummdarm-Aufsaugung vond-Galaktose und Wasser wurde mit einer Pumpendurchströmung in vivo bei normalen und Alloxan-diabetischen Ratten geprüft. 24 Stunden Fasten erhöhte die Aufnahmefähigkeit normaler Ratten, ergab aber keinen Unterschied zwischen normalen Ratten beim Fasten und solchen, die mit Alloxan für 24, 48 und 72 Stunden diabetisch wurden.

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Thanks an due toStanley Smith andPhillip Gray for skilled technical assistance.     

Altered K+ movement in liver mitochondria from alloxan diabetic rats

Summary Potassium movements were monitored in liver mitochondria from control and alloxan diabetic rats with a cationic electrode. There was net accumulation of K⁺ after Ca²⁺ addition to the mitochondria with the diabetic but not with the control.     

Role of ascorbic acid on testicular degeneration in alloxan diabetic rats

Résumé On a observé que l'atrophie degénérative des testicules de rats atteints de diabète provoqué par l'alloxane peut être corrigée par un traitement d'acide ascorbique (vitamine C) administré en hautes doses.     

Altered K+ movement in liver mitochondria from alloxan diabetic rats

Potassium movements were monitored in liver mitochondria from control and alloxan diabetic rats with a cationic electrode. There was net accumulation of K+ after Ca2+ addition to the mitochondria with the diabetic but not with the control.     

Histometric determination of collagen fibers in granulating wounds of alloxan diabetic rats

Résumé La fréquence de la fibrillogenèse collagène dans le tissu de bourgeonnement augmente continuellement et sous une forme linéaire pour les groupes de contrôle et diabétique. D'autre part, le contenu de fibrilles de collagène dans une période de temps déterminée, semble plus réduite dans le groupe diabétique que dans le groupe de contrôle.     

Changes in adenylate cyclase and 5-nucleotidase activities in liver membranes from alloxan diabetic rats

Liver membrane adenylate cyclase activity was significantly higher and 5'-nucleotidase activity significantly lower in alloxan diabetic rats compared with normal rats.     

The formation of flavin-adenine dinucleotide in liver cells prepared from normal and alloxan diabetic rats

Riassunto Viene studiata la formazione del flavin-adenin dinucleotide (FAD) da parte di cellule di fegato di animali normali e diabetici per allossana a partire da flavin mononucleotide (FMN).Le cellule dell'animale normale possono sintetizzare il FAD direttamente dal FMN, mentre le cellule dell'animale diabetico possono effettuare questa sintesi dal FMN, solo se viene aggiunto anche ATP.Tale sintesi è possibile solo se viene conservata l'integrità cellulare. Viene descritto un procedimento per la preparazione delle cellule isolate di fegato.     

L-arginine and pancreatic islet blood flow in anesthetized rats

The aim of the present study was to see if L-arginine, which induces insulin release and is a precursor of the endothelial-derived relaxing factor nitric oxide, affects whole pancreatic and/or islet blood flow. For this purpose, anesthetized male Sprague-Dawley rats were injected intravenously with either saline or L-arginine (25, 100 or 250 mg/kg body weight). All doses of arginine caused a slight increase in blood glucose concentration, while the highest dose (250 mg/kg body weight) also increased insulin concentration. However, no changes in either mean arterial blood pressure, whole pancreatic or islet blood flow could be discerned with any of the doses of arginine used. It is concluded that insulin release is not necessarily associated with an increased islet blood perfusion.     

Distal axonopathy in streptozotocin diabetes in rats

We noted the earliest morphological changes in the motor endplates 8 weeks after the induction of streptozotocin diabetes in rats. Morphometric measurements showed reduced axonal areas of the lateral plantar and the sciatic nerves in the diabetic rats 28 but not 2 and 8 weeks after the experiment. These findings suggested distal axonopathy.     

Distal axonopathy in streptozotocin diabetes in rats

Summary We noted the earliest morphological changes in the motor endplates 8 weeks after the induction of streptozotocin diabetes in rats. Morphometric measurements showed reduced axonal areas of the lateral plantar and the sicatic nerves in the diabetic rats 28 but not 2 and 8 weeks after the experiment. These findings suggested distal axonopathy.