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La exposición a la contaminación atmosférica al inicio del embarazo está relacionada con el aborto espontáneo, sugiere un estudio de los NIH


News provided by

Eunice Kennedy Shriver National Institute of Child Health and Human Development

Nov 16, 2017, 10:30 ET

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BETHESDA, Maryland, 16 de noviembre de 2017 /PRNewswire-HISPANIC PR WIRE/ --

QUÉ: 
La exposición a los contaminantes atmosféricos comunes, como el ozono y las partículas finas, puede aumentar el riesgo de la pérdida precoz del embarazo, según un estudio realizado por los Institutos Nacionales de la Salud. El estudio se publicó en la revista Fertility and Sterility.

El ozono es una forma altamente reactiva de oxígeno que es un componente primario del esmog urbano. Los investigadores siguieron a 501 parejas que intentaron concebir entre 2005 y 2009 en Michigan y Texas. Los investigadores estimaron la exposición al ozono de las parejas en función de los niveles de contaminación en sus comunidades residenciales. De las 343 parejas que lograron el embarazo, 97 (el 28 por ciento) experimentaron una pérdida temprana del embarazo— todas antes de las 18 semanas. Las parejas con mayor exposición al ozono tuvieron un 12 por ciento más de probabilidades de experimentar una pérdida precoz del embarazo, mientras que las parejas expuestas a material particulado (pequeñas partículas y gotitas en el aire) tuvieron un 13 por ciento más de probabilidades de experimentar una pérdida del embarazo.  

Los investigadores no saben por qué la exposición a los contaminantes del aire puede causar la pérdida del embarazo, pero podría estar relacionada con un aumento de la inflamación de la placenta y del estrés oxidativo, que pueden afectar el desarrollo fetal. Los hallazgos sugieren que las mujeres embarazadas tal vez deseen considerar evitar la actividad al aire libre cuando se emitan avisos sobre la calidad del aire, pero se necesita más investigación para confirmar esta asociación.

El estudio fue dirigido por Pauline Mendola, Ph.D., investigadora del Instituto Nacional de Salud Infantil y Desarrollo Humano Eunice Kennedy Shriver de los NIH (NICHD). Su equipo previamente constató que el ozono aumentaba el riesgo de muerte fetal. La Dra. Mendola y sus colegas también han examinado los efectos de la contaminación atmosférica y las temperaturas extremas en otros resultados adversos sobre el embarazo.

QUIÉN: 
Pauline Mendola, Ph.D., autora principal del estudio e investigadora de la división de epidemiología del NICHD, está disponible para hacer comentarios.

Para concertar una entrevista con la Dra. Mendola, por favor, llame a Meredith Daly al 301-496-5133 o envíe un correo electrónico a [email protected].

Articulo: Ha S, et al., Ambient air pollution and the risk of pregnancy loss: a prospective cohort study. Fertility and Sterility DOI: 10.1016/j.fertnstert.2017.09.037 (2017)

Acerca del Instituto Nacional de Salud Infantil y Desarrollo Humano Eunice Kennedy Shriver (NICHD, por sus siglas en inglés): El NICHD realiza y apoya las investigaciones en los Estados Unidos y todo el mundo relacionadas con el desarrollo fetal e infantil; la salud materna, infantil y familiar; la biología reproductiva y los temas relacionados con la población; y la rehabilitación médica. Para obtener más información, visite el sitio web del NICHD.

Acerca de los Institutos Nacionales de la Salud (NIH, por sus siglas en inglés): NIH, el organismo de investigación médica de la nación incluye 27 institutos y centros y forma parte del Departamento de Salud y Servicios Humanos de los Estados Unidos. NIH es el principal organismo federal encargado de realizar y apoyar la investigación médica básica, clínica y translacional, e investiga las causas, los tratamientos y las curas para enfermedades comunes y raras. Para obtener más información sobre los NIH y sus programas, visite el sitio http://www.nih.gov.

FUENTE Eunice Kennedy Shriver National Institute of Child Health and Human Development

SOURCE Eunice Kennedy Shriver National Institute of Child Health and Human Development

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