Antibodies against mycobacterial proteins as biomarkers for HIV-associated smear-negative tuberculosis

Michael Siev, Douglas Wilson, Supreet Kainth, Victoria O. Kasprowicz, Catherine M. Feintuch, Elizabeth R. Jenny-Avital, Jacqueline M. Achkar

Research output: Contribution to journalArticle

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Abstract

Serology data are limited for patients with sputum smear-negative HIV-associated active tuberculosis (TB). We evaluated the serum antibody responses against the mycobacterial proteins MPT51, MS, and echA1 and the 38-kDa protein via enzyme-linked immunosorbent assay (ELISA) in South African (S.A.) HIV-positive (HIV+) smear-negative TB patients (n = 56), U.S. HIV+ controls with a positive tuberculin skin test (TST+; n = 21), and S.A. HIV-negative (HIV-) (n = 18) and HIV+ (n = 24) controls. TB patients had positive antibody reactivity against MPT51 (73%), echA1 (59%), MS (36%), and the 38-kDa protein (11%). Little reactivity against MPT51 and echA1 was observed in control groups at low risk for TB, i.e., S.A. HIV- (0% and 6%, respectively), and at moderate risk for TB development, i.e., U.S. HIV+ TST+ controls (14% and 10%, respectively). By contrast, more reactivity was detected in the S.A. HIV + control group at higher risk for TB (25% and 45%, respectively). Our data hold promise that antibody detection against MPT51 and echA1 might have adjunctive value in the detection of HIV+ smear-negative TB and might reflect increasing Mycobacterium tuberculosis infection activity in asymptomatic HIV+ individuals.

Original languageEnglish (US)
Pages (from-to)791-798
Number of pages8
JournalClinical and Vaccine Immunology
Volume21
Issue number6
DOIs
StatePublished - 2014

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Biomarkers
Tuberculosis
HIV
Antibodies
Proteins
Immunosorbents
Tuberculin
Assays
Skin
Enzymes
Control Groups
Tuberculin Test
Mycobacterium Infections
Serology
Skin Tests
Sputum
Mycobacterium tuberculosis
Antibody Formation
Enzyme-Linked Immunosorbent Assay

ASJC Scopus subject areas

  • Clinical Biochemistry
  • Immunology
  • Immunology and Allergy
  • Microbiology (medical)

Cite this

Antibodies against mycobacterial proteins as biomarkers for HIV-associated smear-negative tuberculosis. / Siev, Michael; Wilson, Douglas; Kainth, Supreet; Kasprowicz, Victoria O.; Feintuch, Catherine M.; Jenny-Avital, Elizabeth R.; Achkar, Jacqueline M.

In: Clinical and Vaccine Immunology, Vol. 21, No. 6, 2014, p. 791-798.

Research output: Contribution to journalArticle

Siev, Michael ; Wilson, Douglas ; Kainth, Supreet ; Kasprowicz, Victoria O. ; Feintuch, Catherine M. ; Jenny-Avital, Elizabeth R. ; Achkar, Jacqueline M. / Antibodies against mycobacterial proteins as biomarkers for HIV-associated smear-negative tuberculosis. In: Clinical and Vaccine Immunology. 2014 ; Vol. 21, No. 6. pp. 791-798.
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abstract = "Serology data are limited for patients with sputum smear-negative HIV-associated active tuberculosis (TB). We evaluated the serum antibody responses against the mycobacterial proteins MPT51, MS, and echA1 and the 38-kDa protein via enzyme-linked immunosorbent assay (ELISA) in South African (S.A.) HIV-positive (HIV+) smear-negative TB patients (n = 56), U.S. HIV+ controls with a positive tuberculin skin test (TST+; n = 21), and S.A. HIV-negative (HIV-) (n = 18) and HIV+ (n = 24) controls. TB patients had positive antibody reactivity against MPT51 (73{\%}), echA1 (59{\%}), MS (36{\%}), and the 38-kDa protein (11{\%}). Little reactivity against MPT51 and echA1 was observed in control groups at low risk for TB, i.e., S.A. HIV- (0{\%} and 6{\%}, respectively), and at moderate risk for TB development, i.e., U.S. HIV+ TST+ controls (14{\%} and 10{\%}, respectively). By contrast, more reactivity was detected in the S.A. HIV + control group at higher risk for TB (25{\%} and 45{\%}, respectively). Our data hold promise that antibody detection against MPT51 and echA1 might have adjunctive value in the detection of HIV+ smear-negative TB and might reflect increasing Mycobacterium tuberculosis infection activity in asymptomatic HIV+ individuals.",
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