Trigger impact of Chlamydia trachomatis on various types of seronegative spondyloarthritis

Abstract

Introduction. To date, clinical manifestations, laboratory changes and the results of instrumental examinations of the joints and spine in axial seronegative spondyloarthritis (aSpA) caused by Chlamydia trachomatis have not been fully elucidated. Purpose of the study: evaluation of clinical manifestations features, diagnosis, and evolution of seronegative spondyloarthritis associated with Chlamydia trachomatis infection. Objectives of the study: To compare clinical manifestations, changes in laboratory parameters, results of instrumental examinations of the joints and spine in seronegative spondyloarthritis, the axial, peripheral, and mixed form. To appreciate the significance of Chlamydia trachomatis in the development of SpA by detecting the presence of DNA using the polymerase chain reaction (PCR) in real time and by isothermal amplification of NASBA-PCR (Nucleic acid sequence-based amplification). Material and methods. During 2015-2021 were examined 138 patients with SpA hospitalized in the Republican Clinical Hospital „Timofei Moşneaga”. Chlamydia trachomatis in the form of monoinfection was detected in 87 (6.3%) patients, of which 52 (59.8%) were women and 35 (40.2%) men. Results. The results of the diagnosis of Chlamydia trachomatis infection in patients with arthritis: Chlamydia trachomatis infection was detected in 78 (89.7%) out of 87 patients examined by PCR, and in 9 (10.3%) cases by ELISA. The peripheral form begins mainly with inflammation of the joints of the lower extremities (81.8%), of which the knee joints are mainly involved in the pathological process (63.6%). SpA axial form associated with Chlamydia trachomatis infection occurs mainly in young men (85.7%). In more than half of the patients, large joints participate in the pathological process (58.8%), especially the lower extremities. The axial variant of the SpA can begin with an injury in any part of the spine. Discussions. SpA associated with Chlamydia trachomatis infection has more expressed clinical, laboratory and instrumental manifestations both in the onset and in the advanced stage of the disease.