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자료유형
학술저널
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대한소아신장학회 Childhood Kidney Diseases Childhood Kidney Diseases 제15권 제2호
발행연도
2011.1
수록면
125 - 137 (13page)

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Purpose:Men are generally more prone to chronic renal disease and progression to end stage renal disease than women. The purpose of this study is to prove the effect of gender and sex hormone on renal fibrosis in mice with unilateral ureteral obstruction (UUO) and to elucidate the specific underlying mechanisms. Methods:We compared the expression of α-smooth muscle actin (α-SMA) in female and male mice with complete UUO (day 7). After this, we estimated the changes of renal fibrosis in the female mice with oophorectomy and in the female mice with oophorectomy and replacement of 17β-estradiol, respectively. Results:The level of α-SMA in the female kidney with UUO was significantly lower than that in the male kidney with UUO. oophorectomy and replacement of 17β-estradiol did not change the expression of angiotensin II type 1 (AT1) receptor in the female kidney with UUO, whereas the expression of angiotensin II type 2 (AT2) receptor was significantly more elevated in the intact female (IF) and the oophorectomized female with estrogen (OF+E) than that in the oophorectomized female (OF). The expressions of inducible nitric oxide synthase (iNOS) in the IF and OF+E mice were significantly more elevated than that in the OF mice, which was similar to the expression of AT2 receptor. Conclusion:The female gender is associated with resistance to renal fibrosis in obstructive uropathy and this gender difference may originate from the existence of 17β-estradiol, which has an anti-fibrotic effect via upregulation of the AT2 receptor and iNOS.

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