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Antiretroviral treatment is associated with iron deficiency in HIV-infected Malawian women that is mitigated with supplementation, but is not associated with infant iron deficiency during 24 weeks of exclusive breastfeeding
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Details:
  • Pubmed ID:
    25723140
  • Pubmed Central ID:
    PMC4506710
  • Description:
    Objective

    In resource-limited settings without safe alternatives to breastfeeding, the WHO recommends exclusive breastfeeding and antiretroviral (ARV) prophylaxis. Given the high prevalence of anemia among HIV-infected women, mothers and their infants (via fetal iron accretion) may be at risk of iron deficiency. We assessed the effects of maternal micronutrient-fortified lipid-based nutrient supplements (LNS) and maternal ARV treatment or infant ARV prophylaxis on maternal and infant iron status during exclusive breastfeeding from birth to 24 weeks.

    Methods

    The Breastfeeding, Antiretrovirals, and Nutrition Study was a randomized controlled trial conducted in Lilongwe, Malawi from 2004-2010. HIV-infected mothers (CD4>200 cells/ul) and their infants were randomly assigned to 28-week interventions: maternal-LNS/maternal-ARV (n=424), maternal-LNS/infant-ARV (n=426), maternal-LNS (n=334), maternal-ARV (n=425), infant-ARV (n=426), or control (n=334). Longitudinal models tested intervention effects on hemoglobin (Hb). In a subsample (n=537) with multiple iron indicators, intervention effects on Hb, transferrin receptors (TfR) and ferritin were tested with linear and Poisson regression.

    Results

    In longitudinal models, LNS effects on maternal and infant Hb were minimal. In subsample mothers, maternal ARVs were associated with tissue iron depletion (TfR>8.3 mg/L) (Risk ratio (RR): 3.1, p<0.01), but not in ARV-treated mothers receiving LNS (p=0.17). LNS without ARVs, was not associated with iron deficiency or anemia (p>0.1). In subsample infants, interventions were not associated with impaired iron status (all p-values>0.1).

    Conclusions

    Maternal ARV treatment with protease inhibitors is associated with maternal tissue iron depletion; but LNS mitigates adverse effects. ARVs do not appear to influence infant iron status; however, extended use needs to be evaluated.

  • Document Type:
  • Collection(s):
  • Funding:
    2-D43TW01039-06/TW/FIC NIH HHS/United States
    P30 AI050410/AI/NIAID NIH HHS/United States
    P30-AI50410/AI/NIAID NIH HHS/United States
    R03 HD057637/HD/NICHD NIH HHS/United States
    R03 HD057775/HD/NICHD NIH HHS/United States
    R24 HD050924/HD/NICHD NIH HHS/United States
    R24 TW007988/TW/FIC NIH HHS/United States
    SIP 13-01 U48-CCU409660-09/PHS HHS/United States
    SIP 22-09 U48-DP001944-01/DP/NCCDPHP CDC HHS/United States
    SIP 26-04 U48-DP000059-01/DP/NCCDPHP CDC HHS/United States
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