Stem cell injection for infertile men
An injection of stem cells could be a new treatment for male infertility. Research suggests that as many as one in three men has problems producing sperm.
In the trial, due to start this month in Jordan, bone marrow cells will be taken from men aged 20 to 50 and added to a solution similar to that found in the testes.
The mixture will then be injected into and around the tubes in the testes where sperm cells develop. The idea is that the stem cells will convert into those that help make sperm. Initial laboratory tests have found this to be the case.
Doctors will monitor the amount of sperm in semen samples taken over the following six months, and will also look at pregnancy rates after around one year.