Document Detail


Long-term effects of maternal magnesium restriction on adiposity and insulin resistance in rat pups.
MedLine Citation:
PMID:  18369337     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: We investigated the long-term effects of maternal/postnatal magnesium (Mg) restriction on adiposity, glucose tolerance, and insulin secretion in the offspring and the probable biochemical mechanisms associated with them. METHODS AND PROCEDURES: Female weanling Wistar/NIN (WNIN) rats received a control diet or 70% Mg-restricted (MgR) diet for 9 weeks and mated with control males. A third of the restricted dams were shifted to control diet from parturition. Half of the pups born to the remaining restricted dams were weaned on to control diet, while the other half continued on MgR diet. Various parameters were determined in the offspring at 18 months of age. RESULTS: The percentage of body fat increased, lean body mass (LBM) and fat free mass (FFM) decreased in restricted offspring and were irreversible by rehabilitation. While glucose tolerance and insulin resistance (IR) were comparable among groups, glucose-stimulated insulin secretion and basal glucose uptake by the diaphragm were significantly decreased in restricted offspring and not corrected by rehabilitation. Plasma leptin was lower, and tumor necrosis factor-alpha (TNF-alpha) was higher in restricted offspring, whereas expression of fatty acid synthase (FAS) and fatty acyl transport protein 1 (FATP 1) was higher in liver and adipose tissue. While changes in FAS and FATP 1 were not correctible by rehabilitation, those in leptin and TNF-alpha were corrected by rehabilitation from parturition but not from weaning. Tissue oxidative stress and antioxidant status were comparable among groups. DISCUSSION: Results indicate that maternal and postnatal Mg status is important in the long-term programming of body adiposity and insulin secretion in rat offspring.
Authors:
Lagishetty Venu; Inagadapa J N Padmavathi; Yedla D Kishore; Nandiwada V Bhanu; Kalashikam R Rao; Pothaganti B Sainath; Manisha Ganeshan; Manchala Raghunath
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-03-27
Journal Detail:
Title:  Obesity (Silver Spring, Md.)     Volume:  16     ISSN:  1930-7381     ISO Abbreviation:  Obesity (Silver Spring)     Publication Date:  2008 Jun 
Date Detail:
Created Date:  2008-06-02     Completed Date:  2008-09-08     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101264860     Medline TA:  Obesity (Silver Spring)     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1270-6     Citation Subset:  IM    
Affiliation:
Division of Endocrinology and Metabolism, National Institute of Nutrition, Hyderabad, India.
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MeSH Terms
Descriptor/Qualifier:
Adipokines / blood
Adipose Tissue / metabolism
Adiposity / physiology*
Animals
Animals, Newborn / physiology*
Body Composition / physiology
Fatty Acid Synthetase Complex / metabolism
Fatty Acid-Binding Proteins / metabolism
Female
Glucose / metabolism
Insulin / metabolism
Insulin Resistance / physiology*
Lipids / blood
Liver / metabolism
Magnesium / physiology*
Magnesium Deficiency / physiopathology*
Pregnancy
Prenatal Exposure Delayed Effects / physiopathology*
Rats
Rats, Wistar
Time Factors
Chemical
Reg. No./Substance:
0/Adipokines; 0/Fatty Acid-Binding Proteins; 0/Lipids; 0/Slc27a1 protein, rat; 11061-68-0/Insulin; 50-99-7/Glucose; 7439-95-4/Magnesium; EC 6.-/Fatty Acid Synthetase Complex

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


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