Document Detail


The distribution of white blood cell fat oxidation in health and disease.
MedLine Citation:
PMID:  14970749     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Fat oxidation is important for maintaining health and for supplying energy for exercise. We have proposed that the predisposition for individual rates of fat oxidation is determined genetically but may be modulated by acute exercise or exercise training. The purpose of this study was to examine cellular fat oxidation in white blood cells (WBC) using [9,10-3H]palmitic acid. Sedentary controls free of symptoms (SED-C, n=32), were compared with known carnitine palmitoyltransferase (CPT) II-deficient patients (n =2), patients with fatiguing diseases (chronic fatigue syndrome, CFS, n=6; multiple sclerosis, MS, n=31), obesity (OB, n=5), eating disorders (ED, n=16), sedentary individuals prior to and after exercise (SED-Ex, n=12), exercise-trained sedentary individuals (SED-Tr, n=12), and elite runners (ER, n=5). Fat oxidation in WBC for all subjects was normally distributed (mean=0.270 +/- 0.090 nmol/h per 10(9) WBC) and ranged from 0.09 nmol/h per 10(9) WBC in CPT II-deficient patients to 0.59 nmol/h per 10(9) WBC in ER. There were no significant sex or acute exercise effects on WBC fat oxidation. Patients with MS, OB or ED were not different from SED-C; however, in CPT II-deficient patients, fat oxidation was low, while that of CFS patients was high. Exercise training in SED-C resulted in a 16% increase in fat oxidation but in ER it was still 97% higher than in SED-C. We propose that while WBC fat oxidation is not significantly affected by sex or acute exercise, and only by 15-20% with training, genetic factors play a role in determining both high and low fat oxidation in certain groups of individuals. The genetic predisposition for individual rates of fat oxidation may be easily measured using WBC fat oxidation, as has been shown for CPT II-deficient patients and for elite runners. Ranges of WBC fat oxidation that are abnormally low (<20 nmol/h per 10(9) WBC, normal 20-35) or high (>35 nmol/h per 10(9) WBC) are proposed based on genetic factors evaluated in this study.
Authors:
D R Pendergast; N M Fisher; K Meksawan; M Doubrava; G D Vladutiu
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of inherited metabolic disease     Volume:  27     ISSN:  0141-8955     ISO Abbreviation:  J. Inherit. Metab. Dis.     Publication Date:  2004  
Date Detail:
Created Date:  2004-02-18     Completed Date:  2004-10-12     Revised Date:  2007-03-21    
Medline Journal Info:
Nlm Unique ID:  7910918     Medline TA:  J Inherit Metab Dis     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  89-99     Citation Subset:  IM    
Affiliation:
Department of Physiology, University at Buffalo, Buffalo, New York 14214, USA. dpenderg@buffalo.edu
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Carnitine O-Palmitoyltransferase / deficiency*
Case-Control Studies
Eating Disorders / blood*
Exercise
Fatigue / blood*
Fats / metabolism*
Female
Humans
Leukocyte Count
Leukocytes / metabolism*
Life Style
Metabolism, Inborn Errors / blood*
Oxidation-Reduction
Physical Education and Training
Reproducibility of Results
Tissue Distribution
Chemical
Reg. No./Substance:
0/Fats; EC 2.3.1.21/Carnitine O-Palmitoyltransferase

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


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