Document Detail


Exercise-induced increases in NT-proBNP are not related to the exercise-induced immune response.
MedLine Citation:
PMID:  18184752     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: To investigate if the exercise-induced immune response contributes to the exercise-induced increase in brain natriuretic peptide (BNP) in healthy athletes. This has previously been speculated, as elevated concentrations of BNP or N-terminal pro brain natriuretic peptide (NT-proBNP) in cardiovascular patients were found to be related to immune reactions and elevations in inflammatory cytokines such as interleukin 6 (IL-6). METHODS: Stored serum samples were analysed for NT-proBNP concentrations of 14 healthy endurance athletes (mean age: 25 (SD 5) years; VO(2peak) 67 (SD 6) ml/min/kg), who had been examined previously for exercise-induced immune reactions and their dependence on carbohydrate supplementation (6 or 12% carbohydrate vs placebo beverages) after three bouts of 4 h cycling at a given workload of 70% of the individual anaerobic threshold. Venous blood samples were taken before, immediately after, and 1 h and 1 day after exercise. Leucocyte subpopulations were determined immediately after blood sampling by flow cytometry. Serum samples for posterior analysis of C-reactive protein (CRP), IL-6, cortisol and NT-proBNP were stored at -80 degrees C. RESULTS: The exercise-induced increases in NT-proBNP (p<0.001) were not related to the exercise-induced immune response, although exercise induced marked (CHOS-dependent) increases in IL-6, CRP, cortisol, leucocytes, neutrophils, monocytes and natural killer cells. CONCLUSION: It is unlikely that the exercise-induced increases in NT-proBNP or BNP in healthy athletes are caused by the exercise-induced immune response. Therefore, exercise-induced increases in NT-proBNP or BNP in healthy athletes have to be differentiated from increases in cardiovascular patients with systemic inflammation.
Authors:
J Scharhag; T Meyer; M Auracher; M Müller; M Herrmann; H Gabriel; W Herrmann; W Kindermann
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-01-09
Journal Detail:
Title:  British journal of sports medicine     Volume:  42     ISSN:  1473-0480     ISO Abbreviation:  Br J Sports Med     Publication Date:  2008 May 
Date Detail:
Created Date:  2008-05-07     Completed Date:  2008-06-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0432520     Medline TA:  Br J Sports Med     Country:  England    
Other Details:
Languages:  eng     Pagination:  383-5     Citation Subset:  IM    
Affiliation:
Institute of Sports and Preventive Medicine, Campus, Building B 8.2, University of Saarland, 66123 Saarbrücken, Germany. j.scharhag@mx.uni-saarland.de
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MeSH Terms
Descriptor/Qualifier:
Adult
Enzyme-Linked Immunosorbent Assay
Exercise / physiology*
Flow Cytometry
Humans
Leukocytes / immunology*
Natriuretic Peptide, Brain / metabolism*
Peptide Fragments / metabolism
Physical Endurance / physiology*
Sports / physiology*
Chemical
Reg. No./Substance:
0/Peptide Fragments; 0/pro-brain natriuretic peptide (1-76); 114471-18-0/Natriuretic Peptide, Brain

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


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