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Lack of functional antilipolytic alpha 2-adrenoceptor in rat fat cell:comparison with hamster adipocyte
Abstract:
1. The small population of [3H]clonidine binding sites in rat fat cell membranes do not have the characteristics of typical alpha 2-adrenoceptors. 2. Clonidine (an alpha 2-adrenoceptor agonist) has no antilipolytic effect on rat fat cells stimulated by theophylline. 3. In contrast to the rat, [3H]clonidine labels an alpha 2-adrenoceptor in hamster fat cell membranes and clonidine exerts a strong antilipolytic effect on theophylline-stimulated lipolysis.