Infectious agents in coronary lesions obtained by endatherectomy: pattern of distribution, coinfection, and clinical findings.

Abstract:

BACKGROUND:Cytomegalovirus (CMV), Chlamydia pneumoniae (C. pneumoniae), and Helicobacter pylori (H. pylori) have been implicated in atherosclerosis and restenosis after angioplasty. The patterns of distribution within coronary lesions and possible coinfections of these pathogens in the coronary vasculature had not previously been evaluated. DESIGN:A prospective, observational clinical study. METHODS:Large coronary specimens (9-105 mm long) were obtained by endatherectomy of 53 patients undergoing aortocoronary bypass surgery. Samples were taken from two different sites of every lesion, resulting in a total of 106 probes. Presence of each pathogen was determined by polymerase chain reaction, subsequent hybridization, and DNA sequencing. RESULTS:Cytomegalovirus and C. pneumoniae were detected in 30 and 32% of the samples, respectively; H. pylori was not detectable. The pathogens were not homogeneously distributed. A concurrent infection with both pathogens was observed in five of 106 (5%) lesions and five of 53 (9%) patients. Restenotic lesions were more often found in specimens in which cytomegalovirus was detected (five of 16 versus two of 37). Patients with C. pneumoniae-positive coronary lesions more commonly presented with unstable angina. CONCLUSIONS:Inhomogeneous infections with cytomegalovirus and C. pneumoniae of coronary atherosclerotic lesions are found to be prevalent when serial analysis is performed. Concurrent infection with both pathogens occurs coincidentally; however, possible clinical implications of this new observation and the pathogenic impact on atherosclerosis need further investigation.

journal_name

Coron Artery Dis

journal_title

Coronary artery disease

authors

Radke PW,Merkelbach-Bruse S,Messmer BJ,vom Dahl J,Dörge H,Naami A,Vogel G,Handt S,Hanrath P

doi

10.1097/00019501-200102000-00001

subject

Has Abstract

pub_date

2001-02-01 00:00:00

pages

1-6

issue

1

eissn

0954-6928

issn

1473-5830

journal_volume

12

pub_type

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