[Hormonal control of prostaglandins biosynthesis during lipolysis in rat adipose tissue (author's transl)].
Lipolysis in rat fat pads was studied by determination of free fatty acid and glycerol production in various experimental conditions (absence or presence of glucose, adrenaline and insulin). These results were compared to the accumulation of endogenous prostaglandins E2 and F2 alpha during lipolysis. In the absence of glucose the prostaglandin production followed the adrenaline-ininduced fluctuations in released free fatty acids both in the presence or absence of insulin. In the presence of glucose and insulin, a drop in prostaglandin accumulation was observed whereas free fatty acid production was strongly stimulated. These results suggest either that free fatty acid composition is modified influencing the acitvity of prostaglandin synthetase, or that there exists a specific mechanism controlling prostaglandin synthesis.
D000273:Adipose Tissue / Q000378:metabolism*; D000818:Animals; D004837:Epinephrine / Q000502:physiology*; D005230:Fatty Acids, Nonesterified / Q000096:biosynthesis; D005947:Glucose / Q000502:physiology; D005990:Glycerol / Q000096:biosynthesis; D007328:Insulin / Q000502:physiology*; D011453:Prostaglandins / Q000096:biosynthesis*; D011458:Prostaglandins E / Q000096:biosynthesis; D011460:Prostaglandins F / Q000096:biosynthesis; D051381:Rats
D005230:Fatty Acids, Nonesterified; D007328:Insulin; D011453:Prostaglandins; D011458:Prostaglandins E; D011460:Prostaglandins F; D005947:Glucose; D005990:Glycerol; D004837:Epinephrine
Contrôle hormonal de la biosynthèse des prostaglandines au cours de la lipolyse dans le tissu adipeux de rat