Altered Ratios of Beta-Endorphin : Beta-Lipotropin Released from Anterior Lobe Corticotropes with Increased Secretory Drive. I. Effects of Diminished Glucocorticoid Secretion
dc.contributor.author | Young, Elizabeth A. | en_US |
dc.contributor.author | Przewlocki, Ryszard | en_US |
dc.contributor.author | Patel, Paresh | en_US |
dc.contributor.author | Watson, Stanley J. | en_US |
dc.contributor.author | Akil, Huda | en_US |
dc.date.accessioned | 2010-06-01T22:23:40Z | |
dc.date.available | 2010-06-01T22:23:40Z | |
dc.date.issued | 1993-02 | en_US |
dc.identifier.citation | Young, Elizabeth A.; Przewlocki, Ryszard; Patel, Paresh; Watson, Stanley J.; Akil, Huda (1993). "Altered Ratios of Beta-Endorphin : Beta-Lipotropin Released from Anterior Lobe Corticotropes with Increased Secretory Drive. I. Effects of Diminished Glucocorticoid Secretion." Journal of Neuroendocrinology 5(1): 115-120. <http://hdl.handle.net/2027.42/75388> | en_US |
dc.identifier.issn | 0953-8194 | en_US |
dc.identifier.issn | 1365-2826 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/75388 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=8485540&dopt=citation | en_US |
dc.description.abstract | Previous studies have demonstrated that acute stress or ovine corticotropin-releasing hormone (oCRH) in vivo , or oCRH in vitro , stimulates release of Β-endorphin over Β-lipotropin from anterior pituitary corticotropes. This occurs despite the predominance of Β-lipotropin in corticotrope peptide stores. In vitro studies with primary anterior pituitary cultures suggested that chronic exposure to oCRH results in a shift towards more Β-lipotropin secretion into the media than with short-term exposure. The current studies explored whether increased secretory drive in vivo results in a similar shift towards more Β-lipotropin. We used removal of glucocorticoids by adrenalectomy or metyrapone blockade of corticosterone synthesis, to stimulate endogenous secretion of CRH and vasopressin. Both treatments resulted in shifts of the ratio of Β-endorphin: Β-lipotropin in plasma of experimental animals in comparison to the sham-treated control rats. In vitro testing with oCRH of anterior lobe cultures from adrenalectomized or metyrapone-treated rats demonstrated similar effects of these treatments on the ratio of Β-endorphin : Β-lipotropin. These changes occurred despite similar ratios of Β-endorphin : Β-lipotropin in anterior pituitary peptide stores. | en_US |
dc.format.extent | 664062 bytes | |
dc.format.extent | 3109 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.publisher | Blackwell Publishing Ltd | en_US |
dc.rights | 1993 Oxford University Press | en_US |
dc.subject.other | Peptide Processing | en_US |
dc.subject.other | Opioid Peptides | en_US |
dc.subject.other | Adrenalectomy | en_US |
dc.subject.other | Metyrapone | en_US |
dc.title | Altered Ratios of Beta-Endorphin : Beta-Lipotropin Released from Anterior Lobe Corticotropes with Increased Secretory Drive. I. Effects of Diminished Glucocorticoid Secretion | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Neurosciences | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Mental Health Research Institute, Department of Psychiatry, University of Michigan, 205 Zina Pitcher Place, Ann Arbor, Michigan 48109, USA. | en_US |
dc.identifier.pmid | 8485540 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/75388/1/j.1365-2826.1993.tb00370.x.pdf | |
dc.identifier.doi | 10.1111/j.1365-2826.1993.tb00370.x | en_US |
dc.identifier.source | Journal of Neuroendocrinology | en_US |
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dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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