The incidence of iconic veins in young men is higher. According to 1971 reports, among the 1072 -year -old students 6 to 19 years old, the physical examination found that 188 young men 6 to 9 years old did not have the iconic veins.Among the 831 young people aged 10 to 19, 136 people have the left sperm veins, accounting for 16.12%.Moreover, as early as 1880, a surgeon in the UK first proposed that the iconic veins can cause male infertility, but the mechanism of infertility has not yet been fully clarified, which may be related to the following factors:
(1) After the temperature of the scrotum is increased, the iconic veins are tensile, and due to the stagnation of blood flow in the sperm vein, the temperature in the scrotum can increase, which is higher than the normal 0.6 ° C, which will affect the sperm production.
(2) Nutritional disorders are affected due to venous blood stagnation, and the blood circulation of testicles and epididymia is affected. The lack of nutrition and oxygen supply required by it affects the occurrence of sperm.
(3) Teste endocrine dysfunction Disar dysfunction Due to the increased local temperature in the scrotum and insufficient blood supply and oxygen supply of testicles, it will inevitably affect the endocrine function of the testes of fine cells in the testicular tube, which interferes with the occurrence of sperm.
(4) Toxin effects Due to the abundant side branch cycle between the iconic vein and the testicular vein, when the iconic veins occur, the blood reverse flows can be caused.Products, such as steroids, catecholamines, 5-hydroxylin, and prostaglandins, bilateral testicles flow into bilateral testicles before detoxification, which will affect sperm production, resulting in too few sperm, morphological abnormalities, and dyskinesia.
(5) The destruction effect of oxygen free radicals shows that when the sperm is densely tensor, the oxygen free radicals in the testosteria tissue increase, and the lipid peroxidation effect worsen, which affects the occurrence of sperm and sperm function.
(Editor in charge: Internship Liu Suling)
