Effects of acute heat stress on tissue carbohydrate in fasted rats.
Exposure of starved female rats to 45 degrees C db, 26 degrees C wb for 0.25-2 h tended to lower blood glucose levels, and increase blood lactate levels, compared with controls at 24 degrees C db, 14 degrees C wb. There was a sustained liver glycogenolysis, but no detectable change in muscle glycogen level. Despite the severity of the stress, the effect of a high environmental temperature on carbohydrate metabolism cannot be satisfactorily interpreted in terms of increased adrenal medullary activity. It is suggested that increased respiratory muscle activity may explain the changes observed.
D000313:Adrenal Medulla / Q000502:physiology; D000818:Animals; D001786:Blood Glucose / Q000378:metabolism; D050260:Carbohydrate Metabolism; D005215:Fasting; D006003:Glycogen / Q000378:metabolism; D006358:Hot Temperature / Q000009:adverse effects*; D007773:Lactates / Q000097:blood; D008099:Liver / Q000378:metabolism; D008112:Liver Glycogen / Q000378:metabolism; D010101:Oxygen Consumption; D051381:Rats; D013312:Stress, Physiological
D001786:Blood Glucose; D007773:Lactates; D008112:Liver Glycogen; D006003:Glycogen