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      Infección por virus de inmunodeficiencia humana en el embarazo: Tratamiento anti-retroviral y vía de parto Translated title: Human immunodeficiency virus (HIV) infection in pregnancy: Antiretroviral treatment (ART) and mode of delivery

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          Abstract

          La terapia anti-retroviral utilizada durante el embarazo en madres infectadas con VIH disminuye la transmisión perinatal del virus. Esto es válido para mono, bi y tri-terapia (HAART), siendo mayor el efecto de esta última. Sin embargo, cuando se utilizan dichas terapias se debe tener en consideración riesgos potenciales para la madre e hijo (hiperglicemia, acidosis láctica, toxicidad mitocondrial, rash cutáneo, daño hepático, síndrome hipertensivo y parto prematuro). La operación cesárea electiva reduce la transmisión perinatal del virus en pacientes sin terapia o monoterapia. Con tri-terapia este beneficio no está demostrado. Este artículo revisa la evidencia de efectos benéficos y adversos de la terapia anti-retroviral y de la operación cesárea y propone una pauta de manejo de las pacientes infectadas con VIH en el embarazo

          Translated abstract

          Antiretroviral therapy (ART) administered to pregnant women infected with HIV diminishes the rate of perinatal viral transmission. This is true for mono-, bi-, or tri-therapy (HAART), with the greatest effects being seen in the latter case. Nevertheless, when these therapies are employed, potential risks to the mother and fetus must be considered. These risks include hyperglicemia, lactic acidosis, mitochondrial toxicity, cutaneous rash, hepatitis, hypertension, and premature labor. Elective caesarean section reduces the perinatal transmission of HIV in patients with or without monotherapy, but has not shown a benefit in patients on tri-therapy (HAART). This article reviews the evidence for and against antiretroviral therapy and elective caesarean section in the setting of HIV in pregnancy and proposes treatment guidelines for these patients

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          Intrapartum and neonatal single-dose nevirapine compared with zidovudine for prevention of mother-to-child transmission of HIV-1 in Kampala, Uganda: HIVNET 012 randomised trial.

          Laura Guay, Philippa Musoke, Thomas Fleming … (1999)
          The AIDS Clinical Trials Group protocol 076 zidovudine prophylaxis regimen for HIV-1-infected pregnant women and their babies has been associated with a significant decrease in vertical HIV-1 transmission in non-breastfeeding women in developed countries. We compared the safety and efficacy of short-course nevirapine or zidovudine during labour and the first week of life. From November, 1997, to April, 1999, we enrolled 626 HIV-1-infected pregnant women at Mulago Hospital in Kampala, Uganda. We randomly assigned mothers nevirapine 200 mg orally at onset of labour and 2 mg/kg to babies within 72 h of birth, or zidovudine 600 mg orally to the mother at onset of labour and 300 mg every 3 h until delivery, and 4 mg/kg orally twice daily to babies for 7 days after birth. We tested babies for HIV-1 infection at birth, 6-8 weeks, and 14-16 weeks by HIV-1 RNA PCR. We assessed HIV-1 transmission and HIV-1-free survival with Kaplan-Meier analysis. Nearly all babies (98.8%) were breastfed, and 95.6% were still breastfeeding at age 14-16 weeks. The estimated risks of HIV-1 transmission in the zidovudine and nevirapine groups were: 10.4% and 8.2% at birth (p=0.354); 21.3% and 11.9% by age 6-8 weeks (p=0.0027); and 25.1% and 13.1% by age 14-16 weeks (p=0.0006). The efficacy of nevirapine compared with zidovudine was 47% (95% CI 20-64) up to age 14-16 weeks. The two regimens were well tolerated and adverse events were similar in the two groups. Nevirapine lowered the risk of HIV-1 transmission during the first 14-16 weeks of life by nearly 50% in a breastfeeding population. This simple and inexpensive regimen could decrease mother-to-child HIV-1 transmission in less-developed countries.
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            Reduction of Maternal-Infant Transmission of Human Immunodeficiency Virus Type 1 with Zidovudine Treatment

            Edward Connor, Rhoda Sperling, Richard D Gelber … (1994)
            Maternal-infant transmission is the primary means by which young children become infected with human immunodeficiency virus type 1 (HIV). We conducted a randomized, double-blind, placebo-controlled trial of the efficacy and safety of zidovudine in reducing the risk of maternal-infant HIV transmission. HIV-infected pregnant women (14 to 34 weeks' gestation) with CD4+ T-lymphocyte counts above 200 cells per cubic millimeter who had not received antiretroviral therapy during the current pregnancy were enrolled. The zidovudine regimen included antepartum zidovudine (100 mg orally five times daily), intrapartum zidovudine (2 mg per kilogram of body weight given intravenously over one hour, then 1 mg per kilogram per hour until delivery), and zidovudine for the newborn (2 mg per kilogram orally every six hours for six weeks). Infants with at least one positive HIV culture of peripheral-blood mononuclear cells were classified as HIV-infected. From April 1991 through December 20, 1993, the cutoff date for the first interim analysis of efficacy, 477 pregnant women were enrolled; during the study period, 409 gave birth to 415 live-born infants. HIV-infection status was known for 363 births (180 in the zidovudine group and 183 in the placebo group). Thirteen infants in the zidovudine group and 40 in the placebo group were HIV-infected. The proportions infected at 18 months, as estimated by the Kaplan-Meier method, were 8.3 percent (95 percent confidence interval, 3.9 to 12.8 percent) in the zidovudine group and 25.5 percent (95 percent confidence interval, 18.4 to 32.5 percent) in the placebo group. This corresponds to a 67.5 percent (95 percent confidence interval, 40.7 to 82.1 percent) relative reduction in the risk of HIV transmission (Z = 4.03, P = 0.00006). Minimal short-term toxic effects were observed. The level of hemoglobin at birth in the infants in the zidovudine group was significantly lower than that in the infants in the placebo group. By 12 weeks of age, hemoglobin values in the two groups were similar. In pregnant women with mildly symptomatic HIV disease and no prior treatment with antiretroviral drugs during the pregnancy, a regimen consisting of zidovudine given ante partum and intra partum to the mother and to the newborn for six weeks reduced the risk of maternal-infant HIV transmission by approximately two thirds.
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              A fetal fatty-acid oxidation disorder as a cause of liver disease in pregnant women.

              Y. Zhao, Spencer B. Gibson, Thomas Bennett … (1999)
              Acute fatty liver of pregnancy and the HELLP syndrome (hemolysis, elevated liver-enzyme levels, and a low platelet count) are serious hepatic disorders that may occur during pregnancy in women whose fetuses are later found to have a deficiency of long-chain 3-hydroxyacyl-coenzyme A (CoA) dehydrogenase. This enzyme resides in the mitochondrial trifunctional protein, which also contains the active site of long-chain 2,3-enoyl-CoA hydratase and long-chain 3-ketoacyl-CoA thiolase. We undertook this study to determine the relation between mutations in the trifunctional protein in infants with defects in fatty-acid oxidation and acute liver disease during pregnancy in their mothers. In 24 children with 3-hydroxyacyl-CoA dehydrogenase deficiency, we used DNA amplification and nucleotide-sequence analyses to identify mutations in the alpha subunit of the trifunctional protein. We then correlated the results with the presence of liver disease during pregnancy in the mothers. Nineteen children had a deficiency only of long-chain 3-hydroxyacyl-CoA dehydrogenase and presented with hypoketotic hypoglycemia and fatty liver. In eight children, we identified a homozygous mutation in which glutamic acid at residue 474 was changed to glutamine. Eleven other children were compound heterozygotes, with this mutation in one allele of the alpha-subunit gene and a different mutation in the other allele. While carrying fetuses with the Glu474Gln mutation, 79 percent of the heterozygous mothers had fatty liver of pregnancy or the HELLP syndrome. Five other children, who presented with neonatal dilated cardiomyopathy or progressive neuromyopathy, had complete deficiency of the trifunctional protein (loss of activity of all three enzymes). None had the Glu474Gln mutation, and none of their mothers had liver disease during pregnancy. Women with acute liver disease during pregnancy may have a Glu474Gln mutation in long-chain hydroxyacyl-CoA dehydrogenase. Their infants are at risk for hypoketotic hypoglycemia and fatty liver.
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                Author and article information

                Journal
                Journal ID (publisher-id): rci
                Title: Revista chilena de infectología
                Abbreviated Title: Rev. chil. infectol.
                Publisher: Sociedad Chilena de Infectología (Santiago, , Chile )
                ISSN (Print): 0716-1018
                Publication date (Print and electronic): December 2005
                Volume: 22
                Issue: 4
                Pages: 327-337
                Affiliations
                [02] Brussels orgnameCatholic University of Louvain orgdiv1Saint Luc University Hospital orgdiv2Department of Internal Medicine Belgium
                [01] orgnamePontificia Universidad Católica de Chile orgdiv1Departamento de Obstetricia y Ginecología Chile
                Article
                Publisher ID: S0716-10182005000600005 Publisher ID: S0716-1018(05)02200405
                DOI: 10.4067/S0716-10182005000600005
                SO-VID: 4111636a-5734-4347-b1db-81790a49e0c5
                License:

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                Date received : 27 May 2005
                Date accepted : 07 October 2005
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 69, Pages: 11
                Product

                SciELO Chile

                Self URI: Texto completo solamente en formato PDF (ES)
                Categories
                Subject: VIH/SIDA

                Keywords: Embarazo,virus de inmunodeficiencia humana,transmisión perinatal,terapia antiretroviral,VIH,TAR,Pregnancy,human immunodeficiency virus,perinatal transmission,antiretroviral therapy,HIV,HAART
                Data availability:
                Keywords: Embarazo, virus de inmunodeficiencia humana, transmisión perinatal, terapia antiretroviral, VIH, TAR, Pregnancy, human immunodeficiency virus, perinatal transmission, antiretroviral therapy, HIV, HAART

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