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  • Title: Plasma free fatty acids and serum insulin in subjects feeding at 12-hour intervals; effects of methionyl growth hormone and of acipimox, an inhibitor of lipolysis.
    Author: Pontiroli AE, Lanzi R, Monzani M, Musatti L, Guglielmone C, Pozza G.
    Journal: J Endocrinol Invest; 1992 Feb; 15(2):85-91. PubMed ID: 1569294.
    Abstract:
    In normal men, plasma free fatty acids (FFA) are influenced by feeding and by fasting; in addition, iv infusions of methionyl growth hormone (met-GH), so far performed during morning hours, induce an FFA rise that can be blocked by acipimox (ACX), a nicotinic acid analogue. The aims of the present study were to evaluate, in the absence of food interferences, the following aspects: i) Fasting FFA, glycerol, and insulin (IRI) in the morning and in the evening, and their response to met-GH ii) The effect of ACX and of a sustained release ACX formulation (ACX-SR) on fasting and met-GH induced lipolysis and on IRI levels. In a double blind study, 6 normal men received 50% cal at 09:30 h and 50% at 21:30 h; during placebo administrations FFA, glycerol, and IRI levels were lower at 06:30 h than at 18:30 h, and an iv met-GH infusion (160 ng/kg/min lasting 180 min) had a similar effect on FFA and on glycerol at 06:30 h and at 18:30 h. ACX-SR, administered at 21:30 h and 09:30 h, lowered FFA and glycerol in the morning as well as in the evening, and prevented met-GH induced lipolysis in the morning, but not in the evening.(ABSTRACT TRUNCATED AT 250 WORDS)
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