Genetic inheritance and testosterone-Male sex hormone- are factors directly involved in the onset of alopecia, a disorder that affects a large percentage of men after 35 or 40 years, and that is estimated to suffer to some extent up to 80 percent of them before they turn 70 years old.
Testosterone is responsible for the hair follicles They contract until they almost disappear, which results in the irreversible loss of hair characteristic of baldness. But it seems that this hormone is not the only one responsible for the hair falling out and not coming out again. Research in the United States by scientists at the University of Pennsylvania has shown that there is a protein - prostaglandin D synthase - whose levels are elevated in the cells of hair follicles located in areas of the scalp that lack hair, and This does not happen in areas with hair.
This discovery could be used to develop new treatments to prevent the appearance of baldness
The authors of the study, which has been published in Science Translational Medicine, observed that the mice that had high levels of this protein were totally bald and, when they implanted human hair, the hair stopped growing when they were given the protein.
George Cotsarelis, director of the research and professor of the department of dermatology at the University of Pennsylvania, explained that by binding this protein to a receptor on the cells present in the hair follicles, hair growth is inhibited. The researcher hopes that this discovery will serve to develop new treatments to prevent the onset of baldness and even reverse hair loss.