SETTING: The National HIV Unit, Singapore. OBJECTIVE: To test whether zinc supplementation improves the immune response to tuberculosis in HIV-positive patients. DESIGN: A double-blind, randomised, placebo-controlled trial of 28 days of oral zinc sulphate (50 mg of elemental zinc) or placebo in stable adult HIV-positive patients receiving antiretroviral therapy with a CD4 count <200 cells/microl. METHODS:IFN-gamma response to mycobacterial antigen stimulation, CD4/8 cell count, lymphocyte subsets, T-cell receptor excision circle (TREC) levels and viral load were measured at baseline and day 28. RESULTS: Thirty-two patients received zinc and 34 placebo. There was no significant change in the IFN-gamma response to human PPD stimulation in the zinc or placebo groups (placebo baseline: 0.42 +/- 1.03, day 28: 0.84 +/- 1.21 IU/ml, zinc baseline: 1.26 +/- 2.41, day 28: 1.39 +/- 1.88 IU/ml, P = 0.31 between groups), nor any of the other mycobacterial antigens tested. There were no changes in absolute CD4/8 cell levels or other lymphocyte subsets, TREC or viral load. Baseline zinc levels were normal in 62/66 (93.9%) patients. CONCLUSIONS: We found no evidence for recommending pharmacological supplementation with oral zinc in HIV-positive patients without zinc deficiency.
RCT Entities:
SETTING: The National HIV Unit, Singapore. OBJECTIVE: To test whether zinc supplementation improves the immune response to tuberculosis in HIV-positivepatients. DESIGN: A double-blind, randomised, placebo-controlled trial of 28 days of oral zinc sulphate (50 mg of elemental zinc) or placebo in stable adult HIV-positivepatients receiving antiretroviral therapy with a CD4 count <200 cells/microl. METHODS:IFN-gamma response to mycobacterial antigen stimulation, CD4/8 cell count, lymphocyte subsets, T-cell receptor excision circle (TREC) levels and viral load were measured at baseline and day 28. RESULTS: Thirty-two patients received zinc and 34 placebo. There was no significant change in the IFN-gamma response to human PPD stimulation in the zinc or placebo groups (placebo baseline: 0.42 +/- 1.03, day 28: 0.84 +/- 1.21 IU/ml, zinc baseline: 1.26 +/- 2.41, day 28: 1.39 +/- 1.88 IU/ml, P = 0.31 between groups), nor any of the other mycobacterial antigens tested. There were no changes in absolute CD4/8 cell levels or other lymphocyte subsets, TREC or viral load. Baseline zinc levels were normal in 62/66 (93.9%) patients. CONCLUSIONS: We found no evidence for recommending pharmacological supplementation with oral zinc in HIV-positivepatients without zinc deficiency.
Authors: S A Clark; S L Martin; A Pozniak; A Steel; B Ward; J Dunning; D C Henderson; M Nelson; B Gazzard; P Kelleher Journal: Clin Exp Immunol Date: 2007-08-02 Impact factor: 4.330
Authors: Trevino A Pakasi; Elvina Karyadi; Ni Made Desy Suratih; Michael Salean; Nining Darmawidjaja; Hans Bor; Koos van der Velden; Wil M V Dolmans; Jos W M van der Meer Journal: Nutr J Date: 2010-09-28 Impact factor: 3.271