Clinical Rheumatology

, Volume 15, Issue 2, pp 143–147

Autoantibodies in black South Africans with systemic lupus erythematosus: Spectrum and clinical associations

  • M. Tikly
  • S. Burgin
  • P. Mohanlal
  • A. Bellingan
  • J. George
Originals

Summary

The clinical features and autoantibody profile of 111 black South Africans (103 females and 8 males) with systemic lupus erythematosus was retrospectively analysed. The mean age of the patients was 35.1 years and mean duration of disease 3.5 years. The commonest clinical and laboratory features noted were arthritis (62.2%), hypocomplementaemia (61.2%), haematological abnormalities (60.5%) and malar rash (55%). The serological abnormalities included antinuclear antibodies (98.2%), anti-dsDNA (66.2%), anti-Sm (44.2%), anti-RNP (65.5%), anti-Ro (60.5%), anti-La (28.4%) and rheumatoid factor (10.1%). Positive clinicoserological associations observed included: combination of anti-dsDNA antibodies and low C4 levels with renal disease; anti-dsDNA antibodies with cutaneous vasculitis; anti-Sm antibodies with psychosis; anti-RNP antibodies with Raynaud's phenomenon; anti-Ro antibodies with renal disease, psychosis and malar rash. Anti-La antibodies showed a weak negative association with serositis and Raynaud's phenomenon. Most of these clinical correlates are consistent with past studies. The high frequency of anti-Sm and anti-RNP antibodies is similar to the observations in African-Americans and Afro-Caribbeans.

Key words

Lupus Autoantibodies Blacks Africa 

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Copyright information

© Clinical Rheumatology 1996

Authors and Affiliations

  • M. Tikly
    • 1
  • S. Burgin
    • 1
  • P. Mohanlal
    • 2
  • A. Bellingan
    • 2
  • J. George
    • 3
  1. 1.Rheumatology Unit, Department of MedicineBaragwanath Hospital and University of the WitwatersrandJohannesburgSouth Africa
  2. 2.Centre for Epidemiological Research in Southern AfricaMedical Research CouncilJohannesburgSouth Africa
  3. 3.Department of ImmunologySouth African Institute for Medical ResearchJohannesburgSouth Africa

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