Rutkowski B, Szolkiewicz M, Korczynska J, Sucajtys E, Stelmanska E, Nieweglowski T, Swierczynski J. The role of lipogenesis in the development of uremic hyperlipidemia.
Am J Kidney Dis 2003;
41:S84-8. [PMID:
12612960 DOI:
10.1053/ajkd.2003.50092]
[Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND
It is well documented that hypertriglyceridemia in renal failure mostly is a result of impaired plasma triglyceride (TG) removal. However, the role of TG production in its development is obscure. Therefore, our attention was given to the gene expression of lipogenic enzymes participating in TG biosynthesis.
METHODS
We measured some lipogenic enzyme activities, protein abundance (Western blot analysis), and messenger RNA level (Northern blot analysis) in liver and epididymal white adipose tissue (WAT) of rats with surgically induced renal failure (two-stage subtotal nephrectomy). Simultaneously, plasma TG and very low-density lipoprotein (VLDL) concentrations in uremic animals were determined.
RESULTS
An increase in plasma TG and VLDL concentrations in rats with renal failure was observed. It was associated with an increase in fatty acid synthase and adenosine triphosphate-citrate lyase (ACL) gene expression in liver and WAT. Moreover, increased activities of malic enzyme, glucose-6-phosphate dehydrogenase, and 6-phosphogluconate dehydrogenase were found.
CONCLUSION
Results of the present study provide some evidence that the accumulation of TG-rich lipoproteins in renal insufficiency could be related in part to increased lipogenic enzyme gene expression and, consequently, TG overproduction.
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