Tick-borne pathogens Bartonella spp., Borrelia burgdorferi sensu lato, Coxiella burnetii and Rickettsia spp. may trigger endocarditis

Advances in Clinical and Experimental Medicine : Official Organ Wroclaw Medical University
Tomasz ChmielewskiStanisława Tylewska-Wierzbanowska

Abstract

Infections caused by tick-borne pathogens such as Bartonella spp., Borrelia burgdorferi s.l., Coxiella burnetii, and Rickettsia spp. are capable of causing serious lesions of the mitral and aortic valves, leading to a need for valve replacement. The aim of the study was to determine whether such cases are sporadic or frequent. An additional goal was to establish effective diagnostic methods to detect these infections. The study involved 148 patients undergoing valve replacement. Blood samples were drawn for serological testing. Samples of the removed mitral and aortic valves were tested with polymerase chain reaction and immunohistochemical staining. Specific antibodies to Bartonella spp. were detected in 47 patients (31.7%) and in 1 of the healthy controls (1%) (p < 0.05). Antibodies to B. burgdorferi spirochetes were found in 18 of the patients (12.2%) and in 6 blood donors from the control group (5.8%) (p < 0.1). Antibodies to Rickettsia spp. were detected in 12 (8.1%) and to C. burnetii phase I and II antigens in the serum of 1 patient. All the participants in the control group were seronegative to C. burnetii and Rickettsia spp. antigens. Polymerase chain reaction (PCR) tests for detection of Bartonella spp., B. burgdorfer...Continue Reading

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