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BMC Neurology
Published in: BMC Neurology 1/2013

Open Access 01-12-2013 | Research article

Chlamydia pneumoniae infection and cerebrovascular disease: a systematic review and meta-analysis

Authors: Juan Chen, Meijia Zhu, Gaoting Ma, Zhangning Zhao, Zhongwen Sun

Published in: BMC Neurology | Issue 1/2013

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Abstract

Background

A wealth of published studies have been published on association between Chlamydia pneumoniae (C.pneumoniae) infection and cerebrovascular (CV) disease, but the results were inconsistent. This meta-analysis provides a systematic review of the available evidence from all serological and pathological studies of CV disease and C.pneumoniae.

Methods

A comprehensive research was conducted of MEDLINE, EMBASE, CNKI, WanFang technological periodical database and reference lists of articles to identify eligible case-control and cohort studies. Odds radio (OR) was calculated for each study outcome. Random effect model was used as pooling method and publication bias was estimated for the results.

Results

Fifty-two published studies that met criteria were selected. In case control studies, an association between C.pneumoniae infection and CV disease was revealed by serum specific IgG (OR, 1.61; 95% CI: 1.34 to 1.94), serum IgA (OR, 2.33; 95% CI: 1.76 to 3.08) and PCR technique of C.pneumoniae in peripheral blood cells (OR, 1.90; 95% CI: 1.17 to 3.07). No significant association was found in serum anti-C.pneumonae IgM seropositivity or in-situ-detection of C.pneumoniae in arterial biopsies with CV disease. Subgroup analysis by available studies suggested that C.pneumoniae may paly a role in atherosclerotic stroke, but be less significant in stroke of cardioembolism or other etiologies.

Conclusion

Association between C.pneumoniae infection and CV disease depends on the analytical method adopted, which seems stronger with stroke due to large artery atherosclerosis. Establishing a causal relationship between C.peumoniae infection and CV disease will require more prospective studies with combination of techniques and stratified by etiological subtypes.
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Metadata
Title
Chlamydia pneumoniae infection and cerebrovascular disease: a systematic review and meta-analysis
Authors
Juan Chen
Meijia Zhu
Gaoting Ma
Zhangning Zhao
Zhongwen Sun
Publication date
01-12-2013
Publisher
BioMed Central
Published in
BMC Neurology / Issue 1/2013
Electronic ISSN: 1471-2377
DOI
https://doi.org/10.1186/1471-2377-13-183

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