Male infertility is caused by the bad factors of the day after tomorrow, but some patients are caused by congenital genetic diseases.So what are the common type of infertility?
Crispy X chromosome syndrome
Crispy X chromosome syndrome patients have "fragile" parts on X chromosomes. This part can occur in non -random chromosomal breaks or cracks under certain special conditions. Patients are manifested as low intelligence, special faces, and no fertility.
Klinerfelter syndrome
This syndrome is also called primary small testicles. Patients have one more chromosomes than normal men, 47, xxy.There are also some patients with chromosomal variations in chromosomal type.Patients are tall and tall, with scarcity of rigid hair and beards, short penis, small testicles, and ascidal types. Some patients have male breast development, and martial sperm in semen exist.
46, xx male syndrome
It was reported for the first time in 1946 that the incidence rate was about 1/15,000. The patient's nuclear type was the same as normal women's 46, XX, X small body positive, and the Y small body was negative.Patients, especially the decline of sexual function, have glass changes in some patients, and the number of sperm tubes and small cells is very small.
Xyy syndrome
The incidence rate is about 1: L000. The patient has one more Y chromosomes than normal men. Some patients with the disease may have fertility. Adult patients are mainly manifested as particularly high, poor intelligence, violent temper, and resistance to society.character.There may be many variants for the disease, such as Xyyy, Xyyyy, X/Xyyyy.
Acturavity abnormalities
For example, a double trisomy syndrome, FORD first found a case in 1959. The patient not only had the symptoms of 21 trio down syndrome, but also had infertility.The patient's nuclear type is 48 xxy +2L
Normal nuclear types of genetic infertility
For example, Kallman syndrome, also known as aneminated gonadotropin with low olfactory syndrome; congenital non -testicular; family male gonad dysfunctional disorders.
(Editor in charge: Lin Sen)
