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Prefrontal Cortex and Multiparity in Lactation.

Author(s): Opala EA, Verlezza S, Long H, Rusu D, Woodside B, Walker CD

Neuroscience. 2019 Aug 19;: Authors: Opala EA, Verlezza S, Long H, Rusu D, Woodside B, Walker CD

Article GUID: 31437474
Central ghrelin receptor stimulation modulates sex motivation in male rats in a site dependent manner.

Author(s): Hyland L, Rosenbaum S, Edwards A, Palacios D, Graham MD, Pfaus JG, Woodside B, Abizaid A

Horm Behav. 2018 01;97:56-66 Authors: Hyland L, Rosenbaum S, Edwards A, Palacios D, Graham MD, Pfaus JG, Woodside B, Abizaid A

Article GUID: 29080670
Gating of the neuroendocrine stress responses by stressor salience in early lactating female rats is independent of infralimbic cortex activation and plasticity.

Author(s): Hillerer KM, Woodside B, Parkinson E, Long H, Verlezza S, Walker CD

Stress. 2018 05;21(3):217-228 Authors: Hillerer KM, Woodside B, Parkinson E, Long H, Verlezza S, Walker CD

Article GUID: 29397787
Food restriction during lactation suppresses Kiss1 mRNA expression and kisspeptin-stimulated LH release in rats.

Author(s): Ladyman SR, Woodside B

Reproduction. 2014 May;147(5):743-51 Authors: Ladyman SR, Woodside B

Article GUID: 24492858
Physiological mechanisms, behavioral and psychological factors influencing the transfer of milk from mothers to their young.

Author(s): Jonas W, Woodside B

Horm Behav. 2016 Jan;77:167-81 Authors: Jonas W, Woodside B

Article GUID: 26232032
Mood, Food, and Fertility: Adaptations of the Maternal Brain.

Author(s): Woodside B

Compr Physiol. 2016 06 13;6(3):1493-518 Authors: Woodside B

Article GUID: 27347899
Title:Central ghrelin receptor stimulation modulates sex motivation in male rats in a site dependent manner.
Authors:Hyland L,  Rosenbaum S,  Edwards A,  Palacios D,  Graham MD,  Pfaus JG,  Woodside B,  Abizaid A
Link:https://www.ncbi.nlm.nih.gov/pubmed/29080670?dopt=Abstract
DOI:10.1016/j.yhbeh.2017.10.012
Category:Horm Behav
PMID:29080670
Dept Affiliation: CSBN
1 Department of Neuroscience, Carleton University, Ottawa, Ontario, Canada.
2 Centre for Studies in Behavioral Neurobiology, Concordia University, Montreal, Quebec, Canada.
3 Department of Neuroscience, Carleton University, Ottawa, Ontario, Canada; Centre for Studies in Behavioral Neurobiology, Concordia University, Montreal, Quebec, Canada.
4 Department of Neuroscience, Carleton University, Ottawa, Ontario, Canada. Electronic address: alfonso_abizaid@carleton.ca.

Description:

Central ghrelin receptor stimulation modulates sex motivation in male rats in a site dependent manner.

Horm Behav. 2018 01;97:56-66

Authors: Hyland L, Rosenbaum S, Edwards A, Palacios D, Graham MD, Pfaus JG, Woodside B, Abizaid A

Abstract

Ghrelin, a hormone produced primarily by the stomach, has been associated with motivational processes that include reward-seeking behaviors. In male laboratory mice, elevation of ghrelin levels enhances some aspects of sexual motivation and behavior, whereas in other experiments with male mice, rats, and other species, ghrelin treatment or food deprivation decreases sexual motivation and/or behavior. The present tested the hypothesis that stimulation of ghrelin receptors in different brain regions have opposite effects on male sexual motivation and behavior. To do this we examined appetitive and consummatory sex behaviors of male rats with a truncated ghrelin receptor (FHH-GHSRm1/Mcwi), and that of their WT (FHH) littermates. We also examined the effects of ghrelin or the ghrelin antagonist D-Lys-GHRP6 delivered into the VTA or the MPOA on appetitive and consummatory sex behaviors in male Long Evans rats. Results demonstrate that rats with a truncated ghrelin receptor, or rats that are food deprived, show deficits in anticipatory sex. Furthermore, although ghrelin does not further stimulate sex anticipation in rats when infused into the VTA, intra-VTA infusions of D-Lys-GHRP6 into the VTA further decreases in sex anticipation in food deprived rats. In contrast, ghrelin delivery into the mPOA decreased sex anticipation compared to saline or D-Lys-GHRP6 infused rats. Overall, these data suggest that ghrelin receptor signalling is important for full expression of appetitive sex behaviors. Within the VTA, ghrelin may act to enhance sex motivation, while acting on the mPOA to decrease sex motivation and promote foraging.

PMID: 29080670 [PubMed - indexed for MEDLINE]