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Noticias médicas
Publicado el 1 de julio de 2001
Malaria
La malaria surgió en Africa hace unos 6.500 años
Valiéndose de información de las secuencias genéticas, un grupo de científicos dirigido por especialistas de las universidades estadounidenses de Maryland y Pensilvania ha calculado las fechas en las que surgió la malaria en las poblaciones africana y mediterránea.
En sus comienzos, la malaria afectó a las poblaciones de la cuenca mediterránea hace unos 3.300 años,y puede haberse extendido mediante las rutas y la colonización de los griegos, según los autores del estudio.
Los investigadores identificaron distintos marcadores del gen G6PD, cuyas mutaciones son comunes y hace tiempo que se sospecha que reducen el riesgo de malaria.
Los autores han reconstruido el surgimiento de mutaciones clave en las poblaciones africana y mediterránea y han descubierto que evolucionaron de forma independiente.