Keyword search (4,164 papers available)

"ghrelin" Keyword-tagged Publications:

Title Authors PubMed ID
1 Energetic demands of lactation produce an increase in the expression of growth hormone secretagogue receptor in the hypothalamus and ventral tegmental area of the rat despite a reduction in circulating ghrelin Wellman M; Budin R; Woodside B; Abizaid A; 35365872
PSYCHOLOGY
2 Ghrelin receptor signalling is not required for glucocorticoid-induced obesity in female mice Silver Z; Abbott-Tate S; Hyland L; Sherratt F; Woodside B; Abizaid A; 34060474
CSBN
3 A role for leptin and ghrelin in the augmentation of heroin seeking induced by chronic food restriction. D'Cunha TM, Chisholm A, Hryhorczuk C, Fulton S, Shalev U 31811350
PSYCHOLOGY
4 Central ghrelin receptor stimulation modulates sex motivation in male rats in a site dependent manner. Hyland L, Rosenbaum S, Edwards A, Palacios D, Graham MD, Pfaus JG, Woodside B, Abizaid A 29080670
CSBN

 

Title:Ghrelin receptor signalling is not required for glucocorticoid-induced obesity in female mice
Authors:Silver ZAbbott-Tate SHyland LSherratt FWoodside BAbizaid A
Link:https://pubmed.ncbi.nlm.nih.gov/34060474/
DOI:10.1530/JOE-20-0579
Publication:The Journal of endocrinology
Keywords:GHSRcorticosteroneghrelinglucose tolerancemetabolismobesity
PMID:34060474 Category: Date Added:2021-06-01
Dept Affiliation: CSBN
1 Z Silver, Neuroscience, Carleton University, Ottawa, Canada.
2 S Abbott-Tate, Neuroscience, Carleton University, Ottawa, Canada.
3 L Hyland, Neuroscience, Carleton University, Ottawa, Canada.
4 F Sherratt, Neuroscience, Carleton University, Ottawa, Canada.
5 B Woodside, Center for Studies in Behavioural Neurobiology, Concordia University, Montreal, Canada.
6 A Abizaid, Neuroscience, Carleton University, Ottawa, K1S 5B6, Canada.

Description:

Chronic exposure to high circulating glucocorticoid or ghrelin concentrations increases food intake, weight gain and adiposity, suggesting that ghrelin could contribute to the metabolic effects of chronic glucocorticoids. In male mice, however, blocking ghrelin receptor (GHSR) signalling increased the weight gain and adiposity induced by chronic corticosterone (CORT), rather than attenuating them. In the current study, we investigated the role of GHSR signalling in the metabolic effects of chronic exposure to high circulating CORT in female mice. To do this, female WT and GHSR KO mice were treated with either CORT in a 1% ethanol (EtOH) solution or 1% EtOH alone in their drinking water for 32 days (N=5-8/group). Body weight, food, and water intake as well as vaginal cyclicity were assessed daily. As expected, CORT treatment induced significant increases in body weight, food intake, adiposity and also impaired glucose tolerance. In contrast to results observed in male mice, WT and GHSR KO female mice did not differ on any of these parameters. Neither plasma levels of ghrelin, LEAP-2, the endogenous GHSR antagonist produced by the liver, nor their ratio were altered by chronic glucocorticoid exposure. In addition, CORT treatment disrupted vaginal cyclicity, produced a reduction in sucrose consumption and increased locomotor activity regardless of genotype. Chronic CORT also decreased exploration in WT but not GHSR KO mice. Collectively, these data suggest that most metabolic, endocrine, reproductive and behavioral effects of chronic CORT exposure are independent of GHSR signalling in female mice.





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