Document Detail


Perinatal undernutrition-induced obesity is independent of the developmental programming of feeding.
MedLine Citation:
PMID:  19100759     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Protein or calorie restriction during gestation and/or suckling induces hyperphagia and increases the susceptibility to develop obesity, glucose intolerance and hypertension in adulthood. The mechanisms by which early nutrient restriction affects the normal physiological regulation of feeding as well as to what extent the metabolic programming of hyperphagia contributes to the long-term risk of obesity and insulin resistance remain, however, to be determined. Here the temporal pattern of food intake and the behavioural satiety sequence were investigated in the offspring of Sprague-Dawley rats fed a control (C) or a low-protein (LP) diet throughout pregnancy and lactation. During the first two months of their post-natal life, protein-restricted animals exhibited hyperphagia characterized by a delayed appearance of satiety, an increase in meal size and reduced latency to eat. Protein-restricted pups also exhibited an enhanced expression of the orexigenic peptides Agouti-related protein and neuropeptide Y and decreased hypothalamic levels of the anorexigenic peptide pro-opiomelanocortin. At 8 months, LP rats still consumed larger meals than their control counterparts but they ingested daily the same amount of food as control offspring and exhibited enhanced abdominal fat and increased levels of triglycerides and fatty acids in serum. These observations indicate that the hyperphagia observed in young LP rats results from a decreased action of negative feedback signals critical to meal termination and an enhanced function of the positive signals that initiate and maintain eating. These results also suggest that perinatal malnutrition programmes obesity through a mechanism independent of its effects on feeding behaviour.
Authors:
Ricardo Orozco-Sólis; Sandra Lopes de Souza; Rhowena Jane Barbosa Matos; Isabelle Grit; Jerome Le Bloch; Patrick Nguyen; Raul Manhães de Castro; Francisco Bolaños-Jiménez
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-12-03
Journal Detail:
Title:  Physiology & behavior     Volume:  96     ISSN:  0031-9384     ISO Abbreviation:  Physiol. Behav.     Publication Date:  2009 Mar 
Date Detail:
Created Date:  2009-02-02     Completed Date:  2009-04-28     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0151504     Medline TA:  Physiol Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  481-92     Citation Subset:  IM    
Affiliation:
INRA, UMR1280 Physiologie des Adaptations Nutritionnelles, F-44096, Nantes, France.
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Physiological
Analysis of Variance
Animals
Animals, Newborn
Appetite Regulation / physiology*
Diet, Protein-Restricted
Feeding Behavior / physiology
Female
Hyperphagia / physiopathology
Male
Malnutrition / physiopathology
Obesity / physiopathology*
Pregnancy
Prenatal Exposure Delayed Effects*
Protein-Energy Malnutrition / physiopathology*
Rats
Rats, Sprague-Dawley
Satiation / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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