Human leukocyte antigen typing in tuberculous rheumatism: Poncet's disease
Abstract:SETTING: Tuberculous rheumatism (Poncet's disease) is a reactive polyarthropathy associated with extra-pulmonary and pulmonary tuberculosis (TB) without evidence of mycobacterial infection of the involved joints. As all patients with TB do not present with this peculiar clinical feature, a genetic susceptibility is suspected.
OBJECTIVE: To determine the major histocompatibility complex (MHC) class I and II alleles in Mexican mestizo patients with Poncet's disease.
DESIGN: In this case-control study of 16 Mexican mestizo patients diagnosed with Poncet's disease and 99 ethnically matched healthy controls, high resolution human leukocyte antigen (HLA) typing was performed for HLA-A, B, DR and DQ by polymerase chain reaction. HLA-DRB1 and HLA-DQB1 subtypes were performed by sequence-specific oligonucleotide probe hybridization.
RESULTS: A significantly increased frequency of HLA-B27 (corrected P = 0.01) and DQB1*0301 (corrected P = 0.0009) alleles and decreased frequency of HLA-DQB1*0302 (corrected P = 0.00001) were identified in patients compared to healthy controls.
CONCLUSION: These data suggest that genes located within the MHC may play a role in the susceptibility to Poncet's disease in patients diagnosed with TB.
Document Type: Regular Paper
Affiliations: 1: Department of Rheumatology, Hospital Juárez de México, México DF, México 2: Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición, Salvador Zubirán, México DF, México 3: Department of Physiology, Instituto Nacional de Cardiología Ignacio Chávez, México DF, México
Publication date: 2010-07-01
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