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Infection and Immunity, June 2001, p. 3989-3994, Vol. 69, No. 6
Wellcome Trust Centre for Human Genetics,
Headington, Oxford,1 and MRC Tropical
Epidemiology Group, London School of Hygiene & Tropical Medicine,
London,4 United Kingdom; Medical
Research Council Laboratories, Fajara, The
Gambia2; and GBF, 38124 Braunschweig,
Germany3
Received 4 December 2000/Returned for modification 2 February
2001/Accepted 12 March 2001
The role of genetic factors in clinical tuberculosis is
increasingly recognized; how such factors regulate the immune response to Mycobacterium tuberculosis in healthy individuals is
unclear. In this study of 255 adult twin pairs residing in The Gambia, West Africa, it is apparent that memory T-cell responses to secreted mycobacterial antigens (85-kDa antigen complex, "short-term culture filtrate," and peptides from the ESAT-6 protein), as well as to the
65-kDa heat shock protein, are subject to effective genetic regulation.
The delayed hypersensitivity response to intradermal tuberculin also
demonstrates significant genetic variance, while quantitative T-cell
and antibody responses to the 38-kDa cell membrane protein appear to be
determined largely by environmental factors. Such findings have
implications for vaccine development.
0019-9567/01/$04.00+0 DOI: 10.1128/IAI.69.6.3989-3994.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Genetic Regulation of Acquired Immune Responses to Antigens of
Mycobacterium tuberculosis: a Study of Twins in West
Africa
*
Corresponding author. Mailing address: Diagnostic
Bacteriology, St Mary's Hospital Med. Schl., Norfolk Pl., London W2
1PG, United Kingdom. Phone: 020 7 886 1572. Fax: 020 7 886 1856. E-mail: annette.jepson{at}st-marys.nhs.ac.uk.
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