Detect new abnormal chromosomes

Scientists at the Center for Reproductive Health Technology at the Guangdong Family Planning Research Institute have discovered 39 cases of abnormal chromosomal nucleus that have never been found anywhere. any in the world. According to the director of the center, Zheng Lixin, these cases have been assessed by the national medical genetics laboratory in Hunan province.

Chinese scientists for the first time in the world revealed: These new findings followed the analysis of 5,000 blood samples since 1996, and detected 1,838 cases of abnormal chromosome types.

Genetic diagram with structure including chromosomes (Photo: VNN) One of these cases is a 4-year-old girl who has lost hereditary ability to inhibit retinoblastoma that develops into cancer.

Another case is a 22-year-old female patient who was born without a womb.

The test showed that an abnormal chromosomal nucleus led to a loss of a decision gene about uterine formation in this woman.

The scientists also found that an abnormal chromosomal nucleus caused low sperm count in a pair of twins. These diseases still do not have effective treatment.

Doctors who know well about the abnormalities in their patients can give clinical advice. For example, they might suggest couples to artificially inseminate or adopt to avoid birth of children with disabilities. These new findings will be useful for scientists in the field of genetics and cloning.

Abnormal chromosomes can also be used in the fields of chemicals, radiation or biological viruses.