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J Atheroscler Thromb. 2010 May;17(5):510-6. Epub 2010 Mar 9.

Chlamydia pneumoniae infection was associated with risk of mortality from coronary heart disease in Japanese women but not men: the JACC Study.

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  • 1Center for Medical Sciences, School of Health Sciences, Ibaraki Prefectural University of Health Sciences, Ibaraki, Japan.

Abstract

AIM:

To investigate the association between Chlamydia pneumoniae infection and mortality from coronary heart disease, a nested case-control study was conducted for 39,242 Japanese who participated in the JACC Study.

METHODS:

Immunoglobulin A and G titers of C. pneumoniae were measured in stored serum samples collected from 209 patients (113 men and 96 women) who subsequently died of coronary heart disease after 13-year follow-up; and 209 controls matched for gender, age (+/-5 years) and area of residence.

RESULTS:

After adjustment for high-sensitive CRP and other cardiovascular risk factors, the multivariate odds ratio (OR) of coronary heart disease for highest vs. lowest tertiles of IgA titers was 2.69 (95%CI, 1.00-7.20), p=0.049 for women and 0.58 (0.23-1.46), p=0.25 for men (p for interaction=0.03). A similar association was observed by high (++) vs. low (-/+/-) titers of IgA: multivariate OR was 4.09 (0.86-19.4), p=0.07 for women.

CONCLUSIONS:

Since high IgA titers indicate persistent and repeated infection, such a state is associated with an increased risk of coronary heart disease mortality for women.

PMID:
20215711
[PubMed - indexed for MEDLINE]
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