Transplants should be made between people of the same sex

Women who have a kidney replacement for men are more likely to have this organ rejection, scientists say.

The team from University Hospital in Basel (Switzerland) investigated nearly 200,000 transplants from 1985 to 2004 in more than 400 hospitals in Europe.

They found that graft rejection was most likely to occur in kidneys from donors compared to kidneys of donors, both at 1 year and 10 years after surgery.

The biggest difference is in men 's kidney transplant surgeries for women - the failure rate in the first year is 11% higher than the average, and 8% compared with the long process.

Writing in the Lancet magazine, the group suggested considering organ transplants for people of the same gender. According to them, an advantage of same-sex transplants is that men can benefit from a high concentration of "nephrons" - the basic structural unit of the kidney - found only in male kidneys. In contrast, women will benefit from a low risk of rejection if they receive a kidney from another woman.

Kidneys of men and women are slightly different.(Photo: wichita.kumc.edu)

Dr. Connie Davis, from the University of Washington in Seattle, said "it is impossible to ignore" the effect of male-female immune response in transplantation.

However, the British Organ Transplant Organization said its own research did not find any difference caused by gender.

To date, the view that sex of donor organs affects recipients through the immune system is not new. In stem cell transplants, men who receive a woman's cell increase the risk of dangerous "host-against-transplant" disease, and women who receive male cells are easier to dig. more waste.