CÉLULAS DENDRÍTICAS EN LA INMUNOPATOLOGÍA DEL VIRUS DE INMUNODEFICIENCIA HUMANA
Abstract
En México, como en el resto de los países del mundo, el SIDA ha sido considerado como un serio problema de salud pública. El VIH-1 tiene la capacidad de infectar diversos tipos celulares: células T, macrófagos y células dendríticas (CD). Estas últimas, son cruciales en la defensa contra agentes infecciosos y juegan un papel importante en la patogénesis del virus, constituyen una de las primeras células en ser infectadas en mucosa periférica y están distribuidas en vagina,
ectocervix y mucosa anal; permitiendo así el contacto con el VIH-1 durante la exposición sexual.
Recientemente se ha demostrado que una proteína de membrana tipo II denominada DC-SIGN, participa en la unión del VIH-1 a las CD. Este receptor, es el responsable de mediar la infección a las células T a través de CD, utilizandolas como portadoras permitiendo que el virus tenga acceso a tejido linfático, su mayor sitio de replicación, contribuyendo de esta manera a la patogénesis del VIH/SIDA.
Palabras clave: SIDA, VIH, Células dendríticas
AIDS, HIV, dendrtitic cell
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