Malawi

Vitamin A and D deficiencies associated with incident tuberculosis in HIV-infected patients initiating antiretroviral therapy in multinational case-cohort study

Post Date: 
2017-02-06
Publication: 
Journal of Acquired Immune Deficiency Syndromes
Introduction: Numerous micronutrients have immunomodulatory roles that may influence risk of tuberculosis (TB), but the association between baseline micronutrient deficiencies and incident TB after antiretroviral (ART) initiation in HIV-infected individuals is not well characterized. Methods: We...

Sex-related differences in inflammatory and immune activation markers before and after combined antiretroviral therapy initiation

Post Date: 
2016-10-01
Publication: 
Journal of Acquired Immune Deficiency Syndromes
Background: Women progress to death at the same rate as men despite lower plasma HIV RNA (viral load). We investigated sex-specific differences in immune activation and inflammation as a potential explanation. Methods: Inflammatory and immune activation markers [interferon γ, tumor necrosis factor...

Soluble CD14: An independent biomarker for risk of HIV mother-to-child transmission in setting of pre- and post-exposure antiretroviral prophylaxis

Post Date: 
2015-10-06
Publication: 
The Journal of Infectious Diseases
Elevated soluble CD14 (sCD14) concentrations, a marker of monocyte activation, predicts adverse outcomes in human immunodeficiency virus (HIV)-infected adults. To examine the association of sCD14 concentrations with the risk of mother-to-child transmission (MTCT) of HIV, we nested a case-control...

Detection of microbial translocation in HIV and SIV infection using the limulus amebocyte lysate assay is masked by serum and plasma

Post Date: 
2012-08-01
Publication: 
PLOS One
Objective: Microbial translocation (MT) is thought to be a major contributor to the pathogenesis of HIV-related immune activation, and circulating lipopolysaccharide (LPS) from Gram-negative bacteria is the principle measurement of this process. However, related research has been impeded by...

Prevention of HIV-1 infection with early antiretroviral therapy

Post Date: 
2011-08-11
Publication: 
New England Journal of Medicine
Background: Antiretroviral therapy that reduces viral replication could limit the transmission of human immunodeficiency virus type 1 (HIV-1) in serodiscordant couples. Methods: In nine countries, we enrolled 1763 couples in which one partner was HIV-1–positive and the other was HIV-1–negative; 54...

Pooled individual data analysis of five randomized trials of infant nevirapine prophylaxis to prevent breast-milk HIV-1 transmission

Post Date: 
2012-10-19
Publication: 
Clinical Infectious Diseases
Background: In resource-limited settings, mothers infected with human immunodeficiency virus type 1 (HIV-1) face a difficult choice: breastfeed their infants but risk transmitting HIV-1 or not breastfeed their infants and risk the infants dying of other infectious diseases or malnutrition. Recent...

Screening for pulmonary tuberculosis in HIV-infected individuals: AIDS Clinical Trials Group Protocol A5253

Post Date: 
2013-04-15
Publication: 
International Journal of Tuberculosis and Lung Disease
Background: Improved tuberculosis (TB) screening is urgently needed for human immunodeficiency virus (HIV) infected patients. Methods: An observational, multi-country, cross-sectional study of HIV-infected patients to compare a standardized diagnostic evaluation (SDE) for TB with standard of care (...

Change in Vitamin D levels occurs early after antiretroviral therapy initiation and depends on treatment regimen in resource-limited settings

Post Date: 
2014-04-21
Publication: 
PLOS One
Background: Vitamin D has wide-ranging effects on the immune system, and studies suggest that low serum vitamin D levels are associated with worse clinical outcomes in HIV. Recent studies have identified an interaction between antiretrovirals used to treat HIV and reduced serum vitamin D levels,...

25-Hydroxyvitamin D insufficiency and deficiency is associated with HIV disease progression and virological failure post-antiretroviral therapy initiation in diverse multinational settings

Post Date: 
2014-07-15
Publication: 
The Journal of Infectious Diseases
Background: Low 25-hydroxyvitamin D (25(OH)D) has been associated with increased HIV mortality, but prospective studies assessing treatment outcomes after combination antiretroviral therapy (cART) initiation in resource-limited settings are lacking. Methods: A case-cohort study (N = 411) was nested...

Pre-antiretroviral therapy selenium status predicts WHO stages 3, 4 or death but not virologic failure post-antiretroviral therapy

Post Date: 
2014-11-13
Publication: 
Nutrients
A case-cohort study, within a multi-country trial of antiretroviral therapy (ART) efficacy (Prospective Evaluation of Antiretrovirals in Resource Limited Settings (PEARLS)), was conducted to determine if pre-ART serum selenium deficiency is independently associated with human immunodeficiency virus...

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