Linked Life Data

19429442

Source:http://linkedlifedata.com/resource/pubmed/id/19429442

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pubmed-article:19429442pubmed:abstractTextEstradiol (E2) is produced locally in adipose tissue and could play an important role in fat distribution and accumulation, especially in women. It is well recognized that aromatase is expressed in adipose tissue; however the identity of its estrogenic 17beta-hydroxysteroid dehydrogenase (17beta-HSD) partner is not identified. To gain a better knowledge about the enzyme responsible for the conversion of estrone into estradiol, we determined the activity and expression levels of known estrogenic 17beta-HSDs, namely types 1, 7 and 12 17beta-HSD in preadipocytes before and after differentiation into mature adipocytes using an adipogenic media. Estrogenic 17beta-HSD activity was assessed using [(14)C]-labelled estrone, while mRNA expression levels of types 1, 7 and 12 17beta-HSD were quantified using real-time PCR and protein expression levels of type 12 17beta-HSD was determined using immunoblot analysis. The data indicate that there is a low conversion of E1 into E2 in preadipocytes; however this activity is increased approximately 5-fold (p<0.0001) in differentiated adipocytes. The increased estrogenic 17beta-HSD activity is consistent with the increase in protein expression levels of 17beta-HSD12.lld:pubmed
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pubmed-article:19429442pubmed:year2009lld:pubmed
pubmed-article:19429442pubmed:articleTitleDifferential estrogenic 17beta-hydroxysteroid dehydrogenase activity and type 12 17beta-hydroxysteroid dehydrogenase expression levels in preadipocytes and differentiated adipocytes.lld:pubmed
pubmed-article:19429442pubmed:affiliationMolecular Endocrinology and Oncology Research Center, Laval University Medical Research Center and Laval University, Québec, Canada.lld:pubmed
pubmed-article:19429442pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:19429442pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed
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