Van den Bergh R, Oelofsen W, Naudé RJ, Terblanche SE. The effect of exercise and in vivo treatment with ACTH and norepinephrine on the lipolytic responsiveness of guinea pig (Cavia porcellus) adipose tissue.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. B, COMPARATIVE BIOCHEMISTRY 1992;
101:553-7. [PMID:
1319306 DOI:
10.1016/0305-0491(92)90337-q]
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Abstract
1. In adipose slices of the guinea pig (Cavia porcellus), adrenocorticotrophic hormone (ACTH) produced a significantly higher lipolytic response (increased Vmax and decreased Km) as compared to norepinephrine (NE), thus indicating a marked difference with human adipose tissue. 2. Exercise-training caused a significant increase in the affinity of the lipolytic response in adipose tissue towards both ACTH and NE, but had no significant effect on Vmax. 3. Prolonged in vivo treatment with both ACTH and NE significantly decreased the responsiveness (affinity and capacity) of adipose slices towards ACTH. Responsiveness towards NE was much less affected.
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