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Hypothalamic control of seasonal changes in food intake and body weight.
MedLine Citation:
PMID:  25449796     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Seasonal cycles of fattening and body weight reflecting changes in both food intake and energy expenditure are a core aspect of the biology of mammals that have evolved in temperate and arctic latitudes. Identifying the neuroendocrine mechanisms that underlie these cycles has provided new insights into the hypothalamic control of appetite and fuel oxidation. Surprisingly, seasonal cycles do not result from changes in the leptin-responsive and homeostatic pathways located in the mediobasal and lateral hypothalamus that regulate meal timing and compensatory responses to starvation or caloric restriction. Rather, they result from changes in tanycyte function, which locally regulates transport and metabolism of thyroid hormone and retinoic acid. These signals are crucial for the initial development of the brain, so it is hypothesized that seasonal neuroendocrine cycles reflect developmental mechanisms in the adult hypothalamus, manifest as changes in neurogenesis and plasticity of connections.
Authors:
Francis J P Ebling
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Publication Detail:
Type:  REVIEW     Date:  2014-10-29
Journal Detail:
Title:  Frontiers in neuroendocrinology     Volume:  -     ISSN:  1095-6808     ISO Abbreviation:  Front Neuroendocrinol     Publication Date:  2014 Oct 
Date Detail:
Created Date:  2014-12-3     Completed Date:  -     Revised Date:  2014-12-3    
Medline Journal Info:
Nlm Unique ID:  7513292     Medline TA:  Front Neuroendocrinol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2014 Elsevier Inc. All rights reserved.
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