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- W2027226485 abstract "The mechanisms responsible for age-related glomerular sclerosis (GS) have not been clearly identified. The present experiments were aimed at assessing the importance of the oxidant/antioxidant balance in the early stages of this process. For this purpose, the renal function (biochemical and clearance studies), some characteristics of isolated glomeruli, and reactive oxygen production (superoxide anion, hydrogen peroxide) as well as the antioxidant ability (superoxide dismutase, catalase, glutathione peroxidase) of glomeruli and cultured mesangial cells were studied in 3- and 18-month-old Fischer 344 rats (YOUNG and OLD rats, respectively). OLD animals show a normal renal function, increased urine protein excretion, and augmented protein glomerular content, an indirect index of GS. Isolated glomeruli from these rats produced increased amounts of superoxide anion and hydrogen peroxide, and catalase activity was increased. The glomerular thiobarbituric acid-reactive substances (TBARS) content was higher in OLD than in YOUNG animals. Similar results were obtained in cultured mesangial cells. In summary, the present results demonstrate, at an early stage of rat GS development, an association between the functional and structural changes of this process and an increased TBARS content (likely indicative of lipid oxidative damage) at the glomerular structures as well as in cultured mesangial cells. More extensive studies are needed to confirm the nature of this association." @default.
- W2027226485 created "2016-06-24" @default.
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- W2027226485 date "1997-01-01" @default.
- W2027226485 modified "2023-10-18" @default.
- W2027226485 title "Oxidant/Antioxidant Balance in Isolated Glomeruli and Cultured Mesangial Cells" @default.
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- W2027226485 doi "https://doi.org/10.1016/s0891-5849(96)00239-0" @default.
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