What are the causes of fetal chromosomal abnormalities?

summary

In fact, chromosome abnormalities are very common, but in life, many people do not know much about this early symptoms, and the disease has been quite serious. Some couples love each other before and after marriage, but they can't wait for the crystallization of love. Some of them are "happy" after two or three months, and then they are "exiled". These are often associated with chromosomal abnormalities. Within 3 months of pregnancy, chromosomal abnormality is the main cause of abortion, and 50% - 60% of the long embryo discharge examination found chromosomal abnormality. Now I would like to share with you the causes of fetal chromosomal abnormalities?.

What are the causes of fetal chromosomal abnormalities?

First: physical factors: the radiation environment of human beings, including natural radiation and artificial radiation. Natural radiation includes cosmic radiation, earth radiation and radiation from human body, while artificial radiation includes radiation and occupational radiation. Ionizing radiation has attracted much attention because of its non segregation of chromosomes. It has been proved that the number of undifferentiated oocytes in the irradiated group is significantly higher than that in the non irradiated group, especially in the older mice. It was found that the frequency of trisomy in the experimental group was higher than that in the control group, and caused chromosome aberrations such as heterotopia and deletion of bicentric chromosomes.

Second: chemical factors: people are exposed to a variety of chemical substances in daily life, some are natural products, some are synthetic, they will enter the human body through diet, breathing or skin contact, and cause chromosome aberration.

Third: biological factors: when cultured cells are treated with virus, many types of chromosome aberrations, including breakage, fragmentation and exchange, are often caused.

matters needing attention

Due to the difficulty of chromosome abnormality treatment, the curative effect is not satisfactory, leading to the treatment of congenital intelligence disorder, there is no effective drug. Different types of chromosomal dysplasia have different prognosis. Most of them have poor prognosis. Mental retardation and growth retardation are the common characteristics of chromosomal diseases. It is difficult to treat chromosomal dysplasia, the curative effect is not satisfactory, prevention is more important, preventive measures include the implementation of genetics, chromosome detection, and selectivity, to prevent the birth of children. Pregnant women should do prenatal examination regularly, if the fetus has problems, at least early detection.