In men's infertility, sperm factor is very important, such as too many deformed sperm.According to experts, excessive deformed sperm is a disease that refers to excessive sperm ratio of abnormal forms.Deform sperm does not have normal activity and conception ability, which is one of the main reasons for male infertility.In addition to normal sperm, in addition to normal sperm, it also contains a certain percentage of deformity sperm. The lowest reference range of human sperm normal form is 4%in the latest WHO manual. HoweverThe morphological sperm is less than 15%, and the in vitro fertilization rate is low.
Experts say that in conventional semen analysis, sperm morphology testing is the most valuable for predicting sperm fertilization ability, but sperm morphology evaluation is less likely to be accurate and stable, because human sperm itself exists in morphological diversity.And morphological detection is greater than the subjective influence of the test.The detection and count of malformation sperm shall be carried out in accordance with the recommended dyeing methods and counting methods recommended in the WHO standard, and strictly grasp the standards of normal sperm morphology and the classification standards of malformed sperm.
There are many cases of sperm malformations. The first sperm head is abnormal.The main structure of the sperm head is concentrated cell nucleus and top.In the process of chromatin maturity, abnormalities can cause sperm nuclear air bubble defects in the head, that is, the probability of sperm nucleus abnormality is higher.
The other is the abnormalities of sperm neck and middle.The separation of the head and tail is a common sperm connection section deformity. This deformity is also called a broken sperm.Studies have shown that most broken sperm tail structures are normal; a small part of these sperm has residual connection segments at the rear and is surrounded by cytoplasm groups, or the middle section is missing;The middle section, or the residual connection segment is connected to the main segment.
Another is sperm whipped.There are two manifestations of primary cilia movement disorders and dysplasia of fibrous sheath. The former is an ingredient hidden genetic disease.Such patients are often manifested as bronchial dilatation, chronic sinusitis, visceral inverse and male infertility.The cilia or whipping structure cannot be effectively swinging is the main cause of pathogenic cause.
(Editor in charge: Internship Liu Suqiong)
