| Synthesis of corticosterone in the vascular wall. | |
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MedLine Citation:
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PMID: 7956952 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Extra-adrenal steroid 21-hydroxylation and 11 beta-hydroxylation occur in a variety of human tissues. This study was undertaken to determine whether the rat mesenteric artery produces corticosterone and to demonstrate the CYP11B1 mRNA in the vascular tissue. Isolated rat mesenteric arteries were perfused with Krebs-Ringer solution for 4 h. The perfusate was collected and chromatographed in a reverse-phase HPLC system. The fraction corresponding to synthetic corticosterone was collected and analyzed by mass spectrometry. The concentration of corticosterone in the perfusate from the adrenalectomized rats was measured using radioimmunoassay after separation with the HPLC system. The mass spectra of synthetic corticosterone was identical with corticosterone isolated from the perfusate of the rat mesenteric arteries. The radioactive peak of corticosterone was detected in the perfusate after perfusing the mesenteric artery with Krebs-Ringer solution containing [14C]-pregnenolone. The expression of CYP11B1, 11B2, and 11A mRNA was detected in the mesenteric artery using a RT-PCR. The production of corticosterone in the vascular wall was increased in the adrenalectomized rats compared with that of the controls. This study shows that the rat mesenteric artery produces corticosterone, and the corticosterone synthase is existed in the vasculature. |
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Authors:
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Y Takeda; I Miyamori; T Yoneda; K Iki; H Hatakeyama; I A Blair; F Y Hsieh; R Takeda |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Endocrinology Volume: 135 ISSN: 0013-7227 ISO Abbreviation: Endocrinology Publication Date: 1994 Nov |
Date Detail:
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Created Date: 1994-12-16 Completed Date: 1994-12-16 Revised Date: 2003-11-14 |
Medline Journal Info:
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Nlm Unique ID: 0375040 Medline TA: Endocrinology Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 2283-6 Citation Subset: AIM; IM |
Affiliation:
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Second Department of Internal Medicine, School of Medicine, Kanazawa University, Japan. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Base Sequence Chromatography, High Pressure Liquid Corticosterone / blood, genetics, metabolism* DNA, Complementary / analysis, genetics Male Mesenteric Arteries / metabolism* Molecular Sequence Data RNA, Messenger / analysis, genetics Radioimmunoassay Rats Rats, Wistar Steroid 11-beta-Hydroxylase / analysis, genetics, metabolism |
| Chemical | |
Reg. No./Substance:
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0/DNA, Complementary; 0/RNA, Messenger; 50-22-6/Corticosterone; EC 1.14.15.4/Steroid 11-beta-Hydroxylase |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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