Effect of diethylstilbestrol on polyamine metabolism in hamster epididymis.
- Author:
Chun-Hong QIU
1
;
Masato OHE
;
Shigeru MATSUZAKI
Author Information
- Publication Type:Journal Article
- MeSH: Acetyltransferases; metabolism; Animals; Cricetinae; Diethylstilbestrol; pharmacology; Epididymis; anatomy & histology; drug effects; metabolism; Male; Mesocricetus; Organ Size; drug effects; Ornithine Decarboxylase; metabolism; Polyamines; metabolism; Putrescine; metabolism; Spermidine; analogs & derivatives; metabolism; Spermine; metabolism
- From: Asian Journal of Andrology 2003;5(4):301-306
- CountryChina
- Language:English
-
Abstract:
AIMTo investigate the effect of diethylstilbestrol (DES), one of the most potent endocrine disruptors, on the metabolism of polyamines in hamster epididymis.
METHODSMale golden hamsters of 7-week-old were kept under a light and dark cycle of 14 h and 10 h for 1 week to stimulate maximally the gonadal function. DES was injected subcutaneously at doses of 0.01 mg . kg(-1) . day(-1), 0.1 mg . kg(-1) . day(-1) and 1 mg . kg(-1) . day(-1) for one week.
RESULTSDES treatment caused a significant decrease in the weight of epididymis. The activity of epididymal ornithine decarboxylase (ODC) increased 1 day after DES treatment, kept at a high level for 4 days and then decreased to nearly normal level at day 7. The activity of spermidine/spermine N1-acetyltransferase (SSAT) also increased transiently after DES treatment. The contents of putrescine, spermidine, spermine and N(1)-acetylspermidine were increased 1 day approximately 4 days after DES treatment and restored to normal at day 7. All these changes showed a marked difference between the caput and the cauda.
CONCLUSIONThe polyamine biosynthesis in the hamster epididymis can be affected by DES, a xenoestrogen. DES may probably affect polyamine metabolism in the epididymis by regulating the rate-limiting enzymes involved in the polyamine biosynthesis.
