Registro completo de metadatos
| Campo DC | Valor | Lengua/Idioma |
|---|---|---|
| dc.creator | Rossi, Soledad Paola | - |
| dc.creator | Matzkin, Maria Eugenia | - |
| dc.creator | Terradas, Claudio | - |
| dc.creator | Ponzio, Roberto | - |
| dc.creator | Puigdomenech, Elisa | - |
| dc.creator | Levalle, Oscar | - |
| dc.creator | Calandra, Ricardo Saul | - |
| dc.creator | Frungieri, Monica Beatriz | - |
| dc.date | 2016-12-20T20:10:56Z | - |
| dc.date | 2016-12-20T20:10:56Z | - |
| dc.date | 2012-08 | - |
| dc.date | 2016-11-22T21:21:02Z | - |
| dc.date.accessioned | 2019-04-29T15:54:14Z | - |
| dc.date.available | 2019-04-29T15:54:14Z | - |
| dc.date.issued | 2012-08 | - |
| dc.identifier | Rossi, Soledad Paola; Matzkin, Maria Eugenia; Terradas, Claudio; Ponzio, Roberto; Puigdomenech, Elisa; et al.; New insights into melatonin signaling in hamster Leydig cells; Academic Press Inc Elsevier Science; General And Comparative Endocrinology; 178; 1; 8-2012; 153-163 | - |
| dc.identifier | 0016-6480 | - |
| dc.identifier | http://hdl.handle.net/11336/9852 | - |
| dc.identifier | 1095-6840 | - |
| dc.identifier.uri | http://rodna.bn.gov.ar:8080/jspui/handle/bnmm/305071 | - |
| dc.description | We have previously described that melatonin inhibits androgen production in hamster testes via melatonin subtype 1a (mel1a) receptors and the local corticotrophin-releasing hormone (CRH) system. This study attempted to determine the initial events of the melatonin/CRH signaling pathway. In Leydig cells from reproductively active Syrian hamsters, Western blotting, reverse transcription quantitative polymerase chain reaction (RT-qPCR) and a colorimetric assay demonstrated that melatonin and CRH activate tyrosine phosphatases and subsequently reduce the phosphorylation levels of extracellular signal-regulated kinase (erk) and c-jun N-terminal kinase (jnk), down-regulate the expression of c-jun, c-fos and steroidogenic acute regulatory (StAR), and inhibit the production of testosterone. These effects were prevented by a highly selective CRH antagonist, thus indicating that melatonin does not exert a direct role. Specific mitogen-activated protein kinase kinase (MEK) and jnk blockers inhibited expression of c-jun, c-fos, StAR and the production of testosterone, confirming that these are events triggered downstream of erk and jnk. In Leydig cells from photoperiodically regressed adult hamsters, CRH inhibited the production of androstane-3α,17β-diol (3α-diol), the main androgen produced, through the same signaling pathway. Testicular melatonin concentration was 3-4-fold higher in reproductively inactive hamsters than that detected in active animals. Since melatonin, CRH, and their receptors are present not only in hamster testes but also in testicular biopsies of infertile men, we can conjecture about the relevance of this previously uncharacterized pathway in human fertility disorders. In summary, our study identifies crucial intracellular events triggered by melatonin/CRH in the testis that lead to a down-regulation of the steroidogenic process. | - |
| dc.description | Fil: Rossi, Soledad Paola. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentina | - |
| dc.description | Fil: Matzkin, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentina. Universidad de Buenos Aires. Facultad de Medicina; Argentina | - |
| dc.description | Fil: Terradas, Claudio. Universidad de Buenos Aires. Facultad de Medicina; Argentina | - |
| dc.description | Fil: Ponzio, Roberto. Universidad de Buenos Aires. Facultad de Medicina; Argentina | - |
| dc.description | Fil: Puigdomenech, Elisa. Universidad de Buenos Aires. Facultad de Medicina; Argentina | - |
| dc.description | Fil: Levalle, Oscar. Universidad de Buenos Aires. Facultad de Medicina; Argentina | - |
| dc.description | Fil: Calandra, Ricardo Saul. Universidad de Buenos Aires. Facultad de Medicina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentina | - |
| dc.description | Fil: Frungieri, Monica Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentina. Universidad de Buenos Aires. Facultad de Medicina; Argentina | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.language | eng | - |
| dc.publisher | Academic Press Inc Elsevier Science | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.ygcen.2012.04.031 | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0016648012001955 | - |
| dc.rights | info:eu-repo/semantics/restrictedAccess | - |
| dc.rights | https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ | - |
| dc.source | reponame:CONICET Digital (CONICET) | - |
| dc.source | instname:Consejo Nacional de Investigaciones Científicas y Técnicas | - |
| dc.source | instacron:CONICET | - |
| dc.subject | MELATONIN | - |
| dc.subject | LEYDIG CELLS | - |
| dc.subject | INTRACELLULAR SIGNALINGI | - |
| dc.subject | TYROSINE PHOSPHATASES | - |
| dc.subject | TESTOSTERONE | - |
| dc.subject | Bioquímica y Biología Molecular | - |
| dc.subject | Medicina Básica | - |
| dc.subject | CIENCIAS MÉDICAS Y DE LA SALUD | - |
| dc.title | New insights into melatonin signaling in hamster Leydig cells | - |
| dc.type | info:eu-repo/semantics/article | - |
| dc.type | info:eu-repo/semantics/publishedVersion | - |
| dc.type | info:ar-repo/semantics/articulo | - |
| Aparece en las colecciones: | CONICET | |
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