Saturday, June 13, 2009

Church Programs Sample

This explains why hair turns white

Has anyone discovered why the hair inbiancano. It would be the fault of "genotoxic stress", a type of stress that disrupts the DNA making faulty cells engaged in the "colored" hair. The research carried out by a medical team and published on the Japanese "cell" was conducted by studying rats. It 's the ATM gene responsible for the coloration of the hair and controls the system can stop the loss of the hair follicle stem cells. It is the gradual loss of these cells - according to previous studies - the responsible dell'incanutimento. But not only. The Japanese team demonstrated, in fact, that to paint the hair is the irreversible damage on the DNA products such as UV or ionizing radiation. Just studying the effects of radiation or drugs used for chemotherapy on the hair of mice, the researchers found that the rodents will inevitably whitened. "The excessive genotoxic stress - says E. Nishimura of Tokyo Medical and Dental University - triggers the differentiation of these stem cells' that give rise to mature melanocytes. Take a sort of defense mechanism, so the number of these precious stem cells is progressively reduced. And end with hair bleaching.

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