High concentrations of circulating free fatty acids impair renal metabolism of fatty acids derived from VLDL-TG in a rat model.
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May impair renal VLDL-TG handling at high FFA levels; hypothesis-generating for human kidney-lipid interactions.
Metabolism of very low density lipoprotein-triglyceride (VLDL-TG) was studied in the isolated perfused rat kidney (IPRK). Recirculating perfusate consisted of Krebs-Henseleit bicarbonate buffer containing 6% defatted albumin and VLDL-TG which has been labelled in vitro with 14C-tripalmitin. Results show that the IPRK catabolizes VLDL-TG. Renal removal of VLDL-TG from perfusate was impaired in the presence of 1.0 mM palmitate. A lower palmitate concentration, 0.4 mM, was without effect. It is concluded that high concentrations of circulating free fatty acids impair renal metabolism of fatty acids derived from VLDL-TG.
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Mary Ellen Trimble (1985) studied this question.
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