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Updated: Jun 17, 2026
09:11
A Human Fallopian Tube Model for Investigation of C. trachomatis Infections
Published on: August 11, 2012
Case of Chlamydia-associated arthritis.
Yuki Nanke1, Tsuyoshi Kobashigawa, Toru Yago
1Institute of Rheumatology, Tokyo Women's Medical University.
Summary
This case study highlights Chlamydia-associated arthritis, where persistent polyarthritis was linked to specific HLA types (HLA-B35, HLA-B40) and elevated Th17 cells, suggesting their role in pathogenesis.
Area of Science:
- Immunology
- Rheumatology
- Infectious Diseases
Background:
- Chlamydia trachomatis is a common cause of sexually transmitted infections.
- Reactive arthritis can occur following Chlamydia infections.
- The pathogenesis of Chlamydia-associated arthritis is not fully understood.
Observation:
- A 40-year-old man presented with recurrent Chlamydia trachomatis urethritis.
- Polyarthritis developed following the latest episode of urethritis.
- The patient tested positive for HLA-B35 and HLA-B40, but negative for HLA-B27.
Findings:
- Chlamydia-associated arthritis was diagnosed.
- Antibiotic treatment improved urethritis but not arthritis, which persisted for 3 months.
- Elevated levels of Th1, Th17, and regulatory T cells were observed in peripheral blood.
Implications:
- HLA-B35 and HLA-B40 positivity may contribute to persistent arthritis in Chlamydia-associated cases.
- Th17 cells are implicated in the pathogenesis of this condition.
- Further research is warranted to elucidate the role of specific HLA types and T cell subsets in Chlamydia-associated arthritis.
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