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  • Title: In utero exposure to tenofovir disoproxil fumarate does not impair growth and bone health in HIV-uninfected children born to HIV-infected mothers.
    Author: Viganò A, Mora S, Giacomet V, Stucchi S, Manfredini V, Gabiano C, Salvini F, Cellini M, Tamburrini E, Puzzovio M, Zuccotti GV.
    Journal: Antivir Ther; 2011; 16(8):1259-66. PubMed ID: 22155907.
    Abstract:
    BACKGROUND: Growth impairment and bone toxicity due to tenofovir disoproxil fumarate (TDF) fetal exposure has been described mainly in animals. We evaluated growth pattern and bone health in TDF-exposed HIV-uninfected children born to HIV-infected mothers, defined as seroreverters (SR). METHODS: This was a multicentre observational cross-sectional cohort study enrolling 68 SR who were in utero exposed to an antiretroviral regimen including (TDF+) or not including (TDF-) tenofovir. Neonatal data and duration of antiretroviral exposure were recorded. At enrolment, anthropometric measures, tibial speed of sound (SOS) by quantitative ultrasound and several parameters of bone metabolism were assessed. RESULTS: Gestational age and median in utero antiretroviral exposure were similar in subjects exposed to TDF (n=33) and those non-exposed (n =35). Age at enrolment was comparable in the two groups (TDF-exposed range 11.8-76.2 months and TDF non-exposed range 11.8-77.9 months). The incidence of low weight and length measurements (<10th percentiles) at birth was similar in TDF-exposed and TDF non-exposed. Normal growth development was found in both groups of subjects at enrolment. The median (0.6; range -2.4-2.6) SOS z-score of TDF-exposed was similar to the median (0.8; range -2.2-4.4) SOS z-score of TDF non-exposed (Student's t=0.84; P=0.40). Parameters of bone metabolism were similar in the two groups. CONCLUSIONS: Exposure to TDF during pregnancy does not impair growth patterns, bone health and markers of bone metabolism in SR infants and young children born to HIV-infected women.
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