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  • Title: The effect of cyclic AMP analogues and glucagon on cholesteryl ester synthesis and hydrolysis in cultured hamster hepatocytes.
    Author: Hoang VQ, Suckling KE, Cho-Chung YS, Botham KM.
    Journal: FEBS Lett; 1993 Aug 23; 329(1-2):17-20. PubMed ID: 8394829.
    Abstract:
    Two cyclic AMP analogues, 8-chloro cyclic AMP and 8-(4 chlorophenylthio) cyclic AMP, were found to increase the incorporation of [3H]oleate into cholesteryl ester in cultured hamster hepatocytes (30-40%), while incorporation into triacylglycerol was unaffected. An increase of a similar magnitude was observed in the presence of glucagon and the phosphodiesterase inhibitor, theophylline. The cyclic AMP analogues also stimulated the activity of neutral cholesteryl ester hydrolase in the cells, and this effect was mimicked by glucagon and theophylline. These results show that cyclic AMP can affect the cholesteryl ester cycle in hamster hepatocytes, and support the idea that the enzymes involved may be co-ordinately regulated.
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