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Chikungunya virus and autoimmunity.

Amir Tanay1

  • 1Tel Aviv University Medical School, Tel Aviv-Yafo, Israel.

Current Opinion in Rheumatology
|April 5, 2017
PubMed
Summary
This summary is machine-generated.

Chikungunya virus infection can lead to chronic arthritis mimicking rheumatoid arthritis. This persistent rheumatic condition involves specific immunological changes, particularly in T cells, and requires careful clinical consideration.

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Area of Science:

  • Virology
  • Immunology
  • Rheumatology

Background:

  • Chikungunya virus (CHIKV) causes chikungunya fever (CHIKF), characterized by fever, rash, and severe joint pain.
  • While acute symptoms resolve in weeks to months, some patients develop chronic, relapsing arthralgia and arthritis that can mimic rheumatoid arthritis (RA).

Purpose of the Study:

  • To characterize the chronic clinical course of CHIKF-associated arthritis.
  • To elucidate the immunological and pathogenic mechanisms underlying chronic CHIKV arthritis.

Main Methods:

  • Review of existing literature on CHIKF-associated musculoskeletal disease.
  • Analysis of clinical data and immunological findings in affected patients.
  • Comparison of CHIKV arthritis with rheumatoid arthritis.

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Main Results:

  • One-third of CHIKV-infected individuals experience persistent pain months to years post-infection.
  • Elevated inflammatory biomarkers (e.g., IL-6) and specific T-cell activation patterns (CD4+, CD8+) are observed in chronic CHIKV arthritis, similar to RA patients.
  • A significant proportion of CHIKV patients meet classification criteria for seronegative RA.

Conclusions:

  • CHIKV infection can result in a chronic musculoskeletal disease with overlapping clinical and immunological features with RA.
  • CHIKV infection should be considered in the differential diagnosis of new-onset symmetric polyarthritis.
  • The findings raise questions about CHIKV's potential role in triggering autoimmune diseases in genetically susceptible individuals within specific environmental contexts.