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La rata de laboratorio viva más longeva del mundo marca el camino hacia el rejuvenecimiento
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News provided by

Yuvan Research Inc.

Feb 08, 2023, 08:00 ET

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"Sima", una rata hembra de 47 meses de edad, se está tratando con E5, un tratamiento cuyo objetivo es recrear el entorno circulatorio de un mamífero joven —la vida máxima registrada de esta especie es de 45.5 meses.

MOUNTAIN VIEW, California, 8 de febrero de 2023 /PRNewswire/ -- Un experimento dirigido por el Dr. Harold Katcher, uno de los descubridores del primer gen del cáncer de mama, le da esperanzas a la humanidad de cumplir el sueño de revertir el envejecimiento. Mientras trabajaba en Yuvan Research Inc., descubrió qué parte de la sangre de animales jóvenes controla la edad del organismo y lo probó en ocho ratas Sprague-Dawley hembra. "Sima" es la última sobreviviente, pero la edad que alcanzó nos permite visualizar un camino para el rejuvenecimiento humano. "El envejecimiento celular es un proceso no autónomo de las células: no depende de la historia de la célula, sino de su entorno", explicó el Dr. Katcher, director científico de Yuvan, una empresa emergente de California que trabaja en tratamientos de rejuvenecimiento.

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Sima en el laboratorio: ¿cuánto tiempo vivirá?
Sima en el laboratorio: ¿cuánto tiempo vivirá?

Este experimento es la continuación de otro experimento que demostró que la terapia de Yuvan rejuvenecía en un 54% a las ratas macho, según un análisis del reloj epigenético llevado a cabo por el entonces profesor de la UCLA, Dr. Steve Horvath. Más adelante, una organización belga sin fines de lucro, HEALES, decidió financiar dos estudios del ciclo vital: uno que utiliza el tratamiento de Yuvan, llamado "E5"; y otro dirigido por el Dr. Rodolfo Goya, profesor de La Universidad de La Plata (Argentina), que utilizó plasma de ratas jóvenes. El experimento del Dr. Goya logró una extensión moderada de la vida. El experimento de Yuvan sigue en curso, ya que Sima sigue viva a sus 47 meses de edad.

Además, Sima y las demás ratas bajo tratamiento mostraron una fuerza de agarre 2.8 veces mayor que las ratas control. Según el Dr. Goya, "La fuerza muscular es indicio de una vida saludable prolongada". Sima es una Rattus norvegicus, una especie con una vida máxima registrada de 45.5 meses. Su vida media es de 24 a 36 meses. El tratamiento de Yuvan comenzó cuando las ratas ya tenían 24 meses, y aún así prolongó la vida máxima de la especie con un grupo tratado compuesto de solo 8 ratas. 

E5 tiene patente en trámite y la historia de su descubrimiento se plasma en el libro La ilusión del conocimiento, del Dr. Katcher Yuvan planea realizar ensayos en otras especies antes de probarlo en seres humanos —desde el punto de vista humano, Sima ya tiene 126 años, considerando 122.5 años como la esperanza de vida máxima humana. "Sima" significa "límite/frontera" en sánscrito, y al superar el límite de vida de su especie, nos recuerda que la historia humana es una historia de límites superados.

Foto - https://mma.prnewswire.com/media/1997563/sima_2.jpg

FUENTE Yuvan Research Inc.

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