| Does an acute inflammatory response temporarily attenuate parasympathetic reactivation? | |
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MedLine Citation:
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PMID: 20437076 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: Although observational studies suggest that inflammatory markers are associated with autonomic nervous system function, the causal relationship of this is not clear. We tested the hypothesis that acute inflammation will temporarily attenuate vagal reactivation as measured by heart rate recovery after exercise. METHODS: In this double-blind randomized study, 24 healthy subjects were assigned to receive either an influenza vaccine (n = 15) as a model to generate a systemic inflammatory response or a sham vaccine (n = 9). Heart rate recovery after exercise testing was used as an index of parasympathetic nervous function and was calculated as the difference between maximal heart rate during the test and heart rate 1 and 2 min after cessation of exercise. Both blood analysis and treadmill exercise stress tests were conducted before and 48 h after each vaccination. RESULTS: Inflammatory marker, log C-reactive protein (1.9 +/- 1.2 to 2.8 +/- 1.4, p < 0.05) was significantly increased after the influenza vaccine. Heart rate recovery 1 was significantly attenuated 48 h after the influenza vaccination (23.4 +/- 6.4 to 20.5 +/- 4.9, p < 0.05) but not sham vaccination. CONCLUSIONS: These findings show that acute inflammation is associated with a temporary deterioration in cardiac autonomic nervous system function in healthy subjects. |
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Authors:
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Sae Young Jae; Kevin S Heffernan; Soo-Hyun Park; Sun-Hae Jung; Eun Sun Yoon; Euy Jin Kim; Eui Soo Ahn; Bo Fernhall |
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Publication Detail:
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Type: Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't Date: 2010-05-01 |
Journal Detail:
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Title: Clinical autonomic research : official journal of the Clinical Autonomic Research Society Volume: 20 ISSN: 1619-1560 ISO Abbreviation: Clin. Auton. Res. Publication Date: 2010 Aug |
Date Detail:
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Created Date: 2010-06-28 Completed Date: 2010-09-30 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9106549 Medline TA: Clin Auton Res Country: Germany |
Other Details:
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Languages: eng Pagination: 229-33 Citation Subset: IM |
Affiliation:
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Department of Sports Informatics, The Health and Integrative Physiology Laboratory, University of Seoul, 90 Jeonnong-dong, Dongdaemun-gu, Seoul, 130-743, South Korea. syjae@uos.ac.kr |
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult C-Reactive Protein / immunology Cardiovascular System / immunology, physiopathology Exercise / physiology Female Heart Rate / immunology* Humans Inflammation* Influenza Vaccines / immunology Male Parasympathetic Nervous System / immunology*, physiopathology Young Adult |
| Chemical | |
Reg. No./Substance:
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0/Influenza Vaccines; 9007-41-4/C-Reactive Protein |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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