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Establishment of Porphyromonas gingivalis Heat-shock-protein-specific T-cell Lines from Atherosclerosis Patients

¹ Department of Periodontology, School of Dentistry,
² Department of Thoracic and Cardiovascular Surgery, School of Medicine,
³ Department of Molecular Biology, College of Natural Sciences, and
⁴ Department of Pharmacology, School of Medicine, Pusan National University, 1-10, Ami-Dong, Seo-Ku, Pusan 602-739, Korea;

Correspondence: *corresponding author, jilchoi{at}pusan.ac.kr

Human atherosclerotic plaques contain heat-shock proteins which may serve as potential targets of the immune response in atherosclerosis. Since periodontal infections are suggested as risk factors for the development of cardiovascular diseases, we undertook the present study to evaluate the T-cell immune responses specific to Porphyromonas gingivalis (P. gingivalis) heat-shock protein (hsp)60 in patients suffering from atherosclerosis. Anti-P. gingivalis hsp60 IgG antibody titers were elevated in all patients. We could establish P. gingivalis hsp-specific T-cell lines from the atheroma lesions and the peripheral blood. The T-cell lines were a mixture of CD4⁺ and CD8⁺ cells producing the cytokines characteristic of both Th1 and Th2 subsets. The present findings suggest that the T-cell immune response specific to P. gingivalis hsp60 may be involved in the immunopathologic process of atherosclerotic diseases.

Key Words: Porphyromonas gingivalis • heat-shock protein • periodontal pathogen • atherosclerosis • T-cell line

Journal of Dental Research, Vol. 81, No. 5, 344-348 (2002)
DOI: 10.1177/154405910208100511


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