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  • Title: Complex apolipoprotein B-containing lipoprotein particles are associated with a higher rate of progression of human chronic renal insufficiency.
    Author: Samuelsson O, Attman PO, Knight-Gibson C, Larsson R, Mulec H, Weiss L, Alaupovic P.
    Journal: J Am Soc Nephrol; 1998 Aug; 9(8):1482-8. PubMed ID: 9697671.
    Abstract:
    Chronic renal failure is characterized by specific alterations of the lipoprotein metabolism. It has been suggested that renal dyslipoproteinemia contributes to the progression of renal dysfunction. The objective of this study was to investigate the impact of different apoB-containing lipoprotein families on the progressive decline of renal function in patients with moderately advanced chronic renal failure. As part of a larger prospective study, 44 adult nondiabetic patients with primary chronic renal disease were followed with repeated GFR measurements for an average of 2.4 (SD 1.0) yr. Patients' characteristic variables, including plasma levels of lipids, apolipoproteins (apo), and apoA- and apoB-containing lipoprotein families (LP), were determined at the beginning of the observation period. The baseline variables were prospectively related, using linear regression, to the rate of progression (deltaGFR). The patient study group had a mean GFR at baseline of 40.3 (SD 16.7) ml/min per 1.73 m2 body surface area. The average rate of progression was a yearly decline in GFR of -3.2 (SD 5.1) ml/min per 1.73 m2 body surface area. A strong association was observed between the plasma concentration of complex, triglyceride-rich apoB-containing lipoproteins (LP-Bc) and the rate of progression (r=0.43, P < 0.01), whereas there was no association between the cholesterol-rich apoB-containing lipoproteins (LP-B) and deltaGFR. The association between the levels of LP-Bc and the rate of progression was not dependent on the baseline values of GFR, BP, and the degree of proteinuria. The results of this study extend earlier observations regarding the importance of renal dyslipoproteinemia for progressive renal insufficiency. In particular, elevated levels of intact or partially metabolized triglyceride-rich apoB-containing lipoproteins of intermediate- and low-density ranges seem to promote the progression of human renal insufficiency.
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