pubmed-article:12697724 | rdf:type | pubmed:Citation | lld:pubmed |
pubmed-article:12697724 | lifeskim:mentions | umls-concept:C0034721 | lld:lifeskim |
pubmed-article:12697724 | lifeskim:mentions | umls-concept:C0034693 | lld:lifeskim |
pubmed-article:12697724 | lifeskim:mentions | umls-concept:C1366557 | lld:lifeskim |
pubmed-article:12697724 | lifeskim:mentions | umls-concept:C1704256 | lld:lifeskim |
pubmed-article:12697724 | lifeskim:mentions | umls-concept:C1517714 | lld:lifeskim |
pubmed-article:12697724 | lifeskim:mentions | umls-concept:C0032008 | lld:lifeskim |
pubmed-article:12697724 | lifeskim:mentions | umls-concept:C0006668 | lld:lifeskim |
pubmed-article:12697724 | lifeskim:mentions | umls-concept:C0441472 | lld:lifeskim |
pubmed-article:12697724 | lifeskim:mentions | umls-concept:C1314939 | lld:lifeskim |
pubmed-article:12697724 | lifeskim:mentions | umls-concept:C0332120 | lld:lifeskim |
pubmed-article:12697724 | pubmed:issue | 5 | lld:pubmed |
pubmed-article:12697724 | pubmed:dateCreated | 2003-4-16 | lld:pubmed |
pubmed-article:12697724 | pubmed:abstractText | Calcitonin-like pituitary peptide, which is synthesized and secreted by gonadotrophs of the rat anterior pituitary (AP) gland, is a potent inhibitor of prolactin biosynthesis and lactotroph cell proliferation. Because TGF-beta 1 is an autocrine inhibitor of lactotroph cell proliferation, we investigated a possibility that calcitonin (CT) interacts with TGF-beta 1 to inhibit lactotroph cell proliferation. The actions of CT on GGH3 cell proliferation were examined in the absence or presence of anti-TGF-beta 1 serum. Subsequent experiments tested the effects of CT on TGF-beta 1 mRNA abundance as well as TGF-beta 1 synthesis. The studies also tested whether the stimulatory action of CT on TGF-beta 1 mRNA expression involves stabilization of TGF-beta 1 mRNA. Finally, the experiments investigated in vivo actions of CT on TGF-beta 1 synthesis in the AP gland. This was accomplished by studying the changes induced by i.v. administered CT in TGF-beta 1-immunopositive cell populations of adult female rat AP glands. The results have shown that the inhibitory action of CT on proliferation of GGH3 cells was attenuated by rabbit anti-TGF-beta 1 serum. Moreover, CT stimulated TGF-beta 1 mRNA expression, as well as TGF-beta 1 synthesis, in a dose-dependent fashion. Stimulatory action of CT on TGF-beta 1 expression may be posttranscriptional, because it significantly increased TGF-beta 1 mRNA stability. When administered in vivo, CT significantly increased TGF-beta 1-immunopositive cell populations of adult female rat AP gland. Colocalization studies for prolactin and TGF-beta 1 suggest that CT increased TGF-beta 1 synthesis in lactotrophs, and possibly in nonlactotroph cell populations. These results suggest that antiproliferative action of CT on lactotrophs may, at least in part, be mediated by CT-induced TGF-beta 1 expression. | lld:pubmed |
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pubmed-article:12697724 | pubmed:language | eng | lld:pubmed |
pubmed-article:12697724 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:12697724 | pubmed:citationSubset | AIM | lld:pubmed |
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pubmed-article:12697724 | pubmed:status | MEDLINE | lld:pubmed |
pubmed-article:12697724 | pubmed:month | May | lld:pubmed |
pubmed-article:12697724 | pubmed:issn | 0013-7227 | lld:pubmed |
pubmed-article:12697724 | pubmed:author | pubmed-author:RenYuanY | lld:pubmed |
pubmed-article:12697724 | pubmed:author | pubmed-author:SunYa-PingYP | lld:pubmed |
pubmed-article:12697724 | pubmed:author | pubmed-author:ShahGirish... | lld:pubmed |
pubmed-article:12697724 | pubmed:author | pubmed-author:WangYong... | lld:pubmed |
pubmed-article:12697724 | pubmed:author | pubmed-author:LeeTae-JinTJ | lld:pubmed |
pubmed-article:12697724 | pubmed:issnType | Print | lld:pubmed |
pubmed-article:12697724 | pubmed:volume | 144 | lld:pubmed |
pubmed-article:12697724 | pubmed:owner | NLM | lld:pubmed |
pubmed-article:12697724 | pubmed:authorsComplete | Y | lld:pubmed |
pubmed-article:12697724 | pubmed:pagination | 2164-71 | lld:pubmed |
pubmed-article:12697724 | pubmed:dateRevised | 2007-11-14 | lld:pubmed |
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pubmed-article:12697724 | pubmed:year | 2003 | lld:pubmed |
pubmed-article:12697724 | pubmed:articleTitle | Antiproliferative action of calcitonin on lactotrophs of the rat anterior pituitary gland: evidence for the involvement of transforming growth factor beta 1 in calcitonin action. | lld:pubmed |
pubmed-article:12697724 | pubmed:affiliation | Department of Pharmaceutical Sciences, Texas Tech University Health Sciences Center, Amarillo, Texas 79106, USA. | lld:pubmed |
pubmed-article:12697724 | pubmed:publicationType | Journal Article | lld:pubmed |
pubmed-article:12697724 | pubmed:publicationType | Research Support, U.S. Gov't, P.H.S. | lld:pubmed |
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