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Role of the evolutionarily conserved starvation response in anorexia nervosa.
MedLine Citation:
PMID:  20838399     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
This review will summarize recent findings concerning the biological regulation of starvation as it relates to anorexia nervosa (AN), a serious eating disorder that mainly affects female adolescents and young adults. AN is generally viewed as a psychosomatic disorder mediated by obsessive concerns about weight, perfectionism and an overwhelming desire to be thin. By contrast, the thesis that will be developed here is that, AN is primarily a metabolic disorder caused by defective regulation of the starvation response, which leads to ambivalence towards food, decreased food consumption and characteristic psychopathology. We will trace the starvation response from yeast to man and describe the central role of insulin (and insulin-like growth factor-1 (IGF-1))/Akt/ F-box transcription factor (FOXO) signaling in this response. Akt is a serine/threonine kinase downstream of the insulin and IGF-1 receptors, whereas FOXO refers to the subfamily of Forkhead box O transcription factors, which are regulated by Akt. We will also discuss how initial bouts of caloric restriction may alter the production of neurotransmitters that regulate appetite and food-seeking behavior and thus, set in motion a vicious cycle. Finally, an integrated approach to treatment will be outlined that addresses the biological aspects of AN.
Authors:
D S Dwyer; R Y Horton; E J Aamodt
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Publication Detail:
Type:  Journal Article     Date:  2010-09-14
Journal Detail:
Title:  Molecular psychiatry     Volume:  16     ISSN:  1476-5578     ISO Abbreviation:  Mol. Psychiatry     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-05-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9607835     Medline TA:  Mol Psychiatry     Country:  England    
Other Details:
Languages:  eng     Pagination:  595-603     Citation Subset:  IM    
Affiliation:
1] Department of Psychiatry, LSU Health Sciences Center, Shreveport, LA, USA [2] Department of Pharmacology, Toxicology and Neuroscience, LSU Health Sciences Center, Shreveport, LA, USA.
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