The length of the DNA chain can characterize human lifespan. The longer a person's chromosome telomeres, the longer his lifespan, at least in a group of heart disease patients. Some media reported that this conclusion was announced at the annual scientific meeting of the College of Cardiology of the American University in Salt Lake City. John Carlquist, the head of the Institute ’s genetic laboratory, said: “If we count the age, we will find that the longer the patient ’s chromosome telomeres, the longer he will live. This shows that the length of chromosome telomeres is not just a kind of lifespan Measured, perhaps also predicts the probability of survival. The length of telomere directly corresponds to lifespan, even for heart disease patients. "
Chromosome telomeres can prevent the loss of information contained at the ends of chromosomes and prevent other chromosomes from fusing to the ends. However, our cells divide these telomeres shorter each time, making them weaker as we get older and making us more susceptible to age-related diseases. The research focuses on how we use their lengths as life predictions. But before the host died, we did not know whether the prediction was correct.
To circumvent this problem, a team of geneticists studied the telomeres of chromosomes at various stages of zebra finch life. Finally, it was found that both short and rapidly shortening telomeres clearly indicated that birds would die within 1 year. All the research done by researchers on humans is heart disease or stroke patients, and it does not represent the entire human. The Cardiology Institute has information records of nearly 30,000 heart disease patients, which makes it a veritable encyclopedia of heart disease genetics. Carlquist said: "It allows us to measure the telomere length of patients over time." Carlquist hopes that this discovery can be used to measure the therapeutic effect of heart disease in the future.
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