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Erschienen in: International Urogynecology Journal 4/2007

01.04.2007 | Original Article

Estrogen and ghrelin decrease cytoplasmic expression of p27kip1, a cellular marker of ageing, in the striated anal sphincter and levator muscle of ovariectomized rats

verfasst von: Diaa E. E. Rizk, Ahmed H. Al-Marzouqi, Hazem A. Hassan, Soha S. Al-Kedrah, Mohamed A. Fahim

Erschienen in: International Urogynecology Journal | Ausgabe 4/2007

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Abstract

A study was carried out to investigate the effect of estrogen and/or ghrelin on the cellular marker of ageing, p27kip1, in pelvic floor muscles of ovariectomized rats. Virgin Wistar rats (13 months old) underwent ovariectomy followed (1 month) by 42 daily intraperitoneal 17-β estradiol (10 μg/kg), ghrelin (2 μg/kg), both hormones, or placebo vehicle (n=6×4 groups). Six more age-matched animals underwent sham surgery without ovariectomy. Cytoplasmic expression of p27kip1 in the striated urethral and anal sphincters and levator muscle was measured by Western blot analysis in all animals (n=30). p27kip1 signal intensity significantly increased postovariectomy in all muscles compared to sham animals. In the anal sphincter and levator, signal intensity decreased to sham levels with ghrelin or estrogen and decreased further after estrogen or ghrelin and estrogen/ghrelin administration. Urethral sphincter signal intensity decreased without reaching sham levels after drug administration. Estrogen and/or ghrelin replacement reverses the ovariectomy-induced exacerbation of biochemical cellular ageing in the anal sphincter and levator muscle of middle-aged rats.
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Metadaten
Titel
Estrogen and ghrelin decrease cytoplasmic expression of p27kip1, a cellular marker of ageing, in the striated anal sphincter and levator muscle of ovariectomized rats
verfasst von
Diaa E. E. Rizk
Ahmed H. Al-Marzouqi
Hazem A. Hassan
Soha S. Al-Kedrah
Mohamed A. Fahim
Publikationsdatum
01.04.2007
Verlag
Springer-Verlag
Erschienen in
International Urogynecology Journal / Ausgabe 4/2007
Print ISSN: 0937-3462
Elektronische ISSN: 1433-3023
DOI
https://doi.org/10.1007/s00192-006-0159-x

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