Abstract
SUMMARY The effects on lipolysis of various compounds have been studied in intact chicken adipose tissue and in isolated fat cells prepared from chicken adipose tissue. Glucagon stimulated lipolysis at concentrations down to 1 ng./ml. in intact pieces and 0·1 ng./ml. in isolated fat cells. The effect was enhanced by high concentrations of insulin. No anti-lipolytic effect of insulin was observed. Adrenaline, noradrenaline, porcine corticotrophin (ACTH) and long-acting ACTH were lipolytic but the effects were small and high concentrations were required. The adrenaline effect was blocked by propranolol hydrochloride. Dibutyryl 3′,5′-(cyclic)-AMP and theophylline stimulated lipolysis as did a combination of crude chicken growth hormone and hydrocortisone sodium succinate. It was concluded that the pattern of response of chicken adipose tissue was markedly different from that of the rat.
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