Environmental and hormonal regulation of epigenetic enzymes in the hypothalamus

Stevenson, T.J. (2017) Environmental and hormonal regulation of epigenetic enzymes in the hypothalamus. Journal of Neuroendocrinology, 29(5), pp. 1-9. (doi: 10.1111/jne.12471) (PMID:28370682)

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Neuroendocrine structures integrate a vast range of external cues and internal signals that, in turn, result in adaptive physiological responses. Emerging data indicate that light, social cues, stress and energy balance stimulate relatively short‐ and long‐term genomic modifications in discrete neuroendocrine structures, which are mediated by epigenetic mechanisms. Moreover, environmentally‐induced fluctuations in the synthesis of local hypothalamic and circulating hormones provide an internal signal that contributes to the extensive neuroendocrine genomic plasticity. This review examines the impact of environmental stimuli and endogenous hormonal signals on the regulation of epigenetic enzymes in key neuroendocrine structures. The data discussed are predominantly derived from studies in the neuroendocrine control of seasonal reproduction and the impact of social stress in rodent models. The perspective presented considers the role of oestrogen and glucocorticoids as the primary catalysts for inducing epigenetic modifications (eg, DNA methylation) in specific neuroendocrine structures. Oestrogen and glucocorticoid actions suggest: (i) a preferential action for specific epigenetic enzymes and (ii) nucleus‐ and cell‐specific modifications. Untangling the complex web of hormonal regulation of methylation and acetylation will enhance our understanding of short‐ and long‐term changes in epigenetic enzymes that generate adaptive and pathological neuroendocrine responses.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Stevenson, Dr Tyler
Authors: Stevenson, T.J.
College/School:College of Medical Veterinary and Life Sciences > School of Biodiversity, One Health & Veterinary Medicine
Journal Name:Journal of Neuroendocrinology
ISSN (Online):1365-2826
Published Online:30 March 2017
Copyright Holders:Copyright © 2017 British Society for Neuroendocrinology
First Published:First published in Journal of Neuroendocrinology 29(5):1-9
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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