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Despite its rare occurrence, humans and animals have been prone to getting fast developing severe hypobaric hypoxia. Understanding the redox homeostasis related response of an aging heart to this type of hypoxia are crucially important, since the metabolism of myocardial tissue depends on the redox status of proteins. Rodents can tolerate hypoxic stress better than human subjects. This study was aimed...
A depletion in long-chain polyunsaturated ω3 fatty acids may affect fuel homeostasis. In such a perspective, the present study deals mainly with the in vitro fate of d-[U- 14 C]glucose in hemidiaphragms, stretched soleus and plantaris muscle pieces obtained from normal and ω3-depleted rats (second generation) and incubated in the absence or presence of insulin. When so required, the ω3-depleted...
d-fructose (10 mM) augments, in rat pancreatic islets, insulin release evoked by 10 mM d-glucose. Even in the absence of d-glucose, d-fructose (100 mM) displays a positive insulinotropic action. It was now examined whether the insulinotropic action of d-fructose could be attributed to an increase in the ATP content of islet cells. After 30–60 min incubation in the presence of d-glucose and/or d-fructose,...
The effects of d-glucose, d-mannose, d-galactose, d-glyceraldehyde, pyruvate, l-lactate, 2-ketoisocaproate, l-leucine, and/or l-glutamine on the ATP and ADP content of rat isolated pancreatic islets were reevaluated in order to compare changes evoked by these nutrient secretagogues in the islet ATP content and ATP/ADP ratio to their effects upon insulin release. Although being compatible with the...
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