フルテキストファイル
著者
Kinouchi Shinichiro Division of Urology, Department of Surgery, School of Medicine, Tottori University Faculty of Medicine
キーワード
apoptosis
estrogen replacement
old rat
urethra
抄録
Following estrogen replacement in old female rats, changes in apoptosis-related genes (Bcl-2, Bax) in the urethra were investigated by immunohistochemical and RT-PCR analysis. A total of 40 old (16-month-old) female Wistar rats were divided into the following 5 groups: normal controls; rats replaced with low-dose estradiol (E2) for 2 and 4 weeks, respectively; and rats replaced with high-dose E2 for 2 and 4 weeks, respectively. After treatment, the urethras were removed, weighed and stained with hematoxylin and eosin, and then immunohistochemical stainings of Bcl-2 and Bax were performed. In addition,the expressions of the apoptosis-related genes bcl-2 and bax were investigated by PCR analysis, and then evaluated by computerized quantification. In the E2-replaced rats, the immunostained urethras showed little immunoreactivity against the Bcl-protein, and inthe control rats, no reactivity was seen. In contrast, the control rats showedimmunoreactivity against the Bax protein, whereas the E2-replaced rats showed little reactivity. Upon mRNA analysis, the expression of bcl-2 mRNA was uprisen in rats in the high-dose E2 for 4 weeks group as compared with the controls, but the expression of bax mRNA was suppressed in the E2-replaced rats as compared with the controls. As these results suggest, estrogen replacement up-regulated the expression of bcl-2 mRNA and down-regulated the expression of bax mRNA, which might suppress the apoptic action: these changes might alter lower urinary tract findings.
出版者
Tottori University Faculty of Medicine
資料タイプ
学術雑誌論文
ISSN・ISBN
1346-8049
書誌ID
AA00892882
掲載誌名
Yonago Acta medica
最新掲載誌名
Yonago Acta medica
46
4
開始ページ
109
終了ページ
115
発行日
2003-12
著者版フラグ
出版社版
著作権表記
Yonago Acta medica 編集委員会
掲載情報
Yonago Acta medica. 2003, 46(4), 109-115
部局名
医学部・医学系研究科・医学部附属病院
言語
英語