| Estrogen receptor mRNA in uteri of normal estrous cycling and ovariectomized rats by in situ hybridization. | |
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MedLine Citation:
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PMID: 10404038 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Biological effects of estrogen are mediated via its binding to the estrogen receptor (ER), the contents of its protein and mRNA varying during the estrous cycle. In the present study, the ERalpha mRNA expression in different cell components of the uterus was investigated in normal estrous cycling rats using nonisotopic in situ hybridization. Additionally, ovariectomized (OVX) rats treated with 17beta-estradiol (E2: 5 microg/kg, sc injection daily) were also investigated to clarify the effects of exogenous E2. At proestrus and diestrus, and especially the former, the luminal and glandular epithelial (LE and GE) cells were strongly positive, along with stromal cells beneath the luminal epithelium. At estrus, the expression was slightly diminished in LE cells, but almost completely lacking in GE cells. At metestrus, positive signals appeared again in GE cells. In the myometrium, ER mRNA was demonstrated to be constantly positive in all estrous cycle stages. OVX rat uteri underwent marked atrophy, but ER mRNA still remained in all cell types. After 2 consecutive days of E2 treatment, markedly increased intensity was observed, especially in LE and GE cells. The uteri of OVX rats treated with E2 for 14 days, however, showed slightly diminished expression, whereas the serum concentration of E2 was comparable to that in rats after 2 days. These results provide evidence that cell-type specific patterns of ER mRNA expression characterize the uteri of both normal estrous cycling rats and OVX rats after estrogen treatment. |
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Authors:
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S I Katsuda; M Yoshida; T Watanabe; H Kuroda; J Ando-Lu; M Takahashi; H Hayashi; A Maekawa |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine (New York, N.Y.) Volume: 221 ISSN: 0037-9727 ISO Abbreviation: Proc. Soc. Exp. Biol. Med. Publication Date: 1999 Jul |
Date Detail:
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Created Date: 1999-07-29 Completed Date: 1999-07-29 Revised Date: 2007-11-02 |
Medline Journal Info:
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Nlm Unique ID: 7505892 Medline TA: Proc Soc Exp Biol Med Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 207-14 Citation Subset: IM |
Affiliation:
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Department of Pathology, Sasaki Institute, Chiyoda-ku, Tokyo, 101-0062, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Estradiol / blood, pharmacology Estrus / physiology* Female Histocytochemistry In Situ Hybridization Oligonucleotides, Antisense / metabolism Organ Size Ovariectomy Progesterone / blood RNA, Messenger / metabolism* Rats Rats, Inbred Strains Receptors, Estrogen / genetics* Uterus / drug effects*, metabolism |
| Chemical | |
Reg. No./Substance:
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0/Oligonucleotides, Antisense; 0/RNA, Messenger; 0/Receptors, Estrogen; 50-28-2/Estradiol; 57-83-0/Progesterone |
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