艾滋病病毒 z-bo 2020-10-21 326

　　According to the latest research, "simian immunodeficiency virus (SIV)" is called "the ancestor of HIV" and may spread between humans and chimpanzees, possibly due to human infection with AIDS. The original reason. According to "Tencent Science News" and the British "Daily Mail" report, scientists discovered the first batch of viruses considered to be the "ancestors" of HIV. The virus can cause AIDS, possibly due to human bites and wound infections while chimpanzees are searching for food. Caused by the blood of chimpanzees. Experts believe that the history of human transmission of AIDS can be traced back to the tropical rainforests of West Africa in the early 20th century. Currently, the latest research supports this theory and confirms that HIV can be transmitted between chimpanzees and humans.

　　Scientists speculate that hunters or jungle hunters are the earliest simian immunodeficiency virus (SIV) infection. The SIV virus is the monkey version of HIV. Virologists believe that this is the ancestor of AIDS. Recent studies by scientists have confirmed that the SIV strain carried by chimpanzees can also infect humans. They found the first experimental evidence that the chimpanzee SIV virus infects human cells. Li Qingsheng, a biologist and author of the research report, said: “The question is whether the SIV strain is another potential route of HIV infection that has not been found in humans. The results of the research show that this is true.”

　　Research people want to understand why humans can be infected with HIV while avoiding other viruses. HIV is generally divided into four types: M, N, O and P. Type M can form an AIDS epidemic by spreading to Africa and other parts of the world, infecting 40 million people. Types N and P are the other extreme. Although only present in a small percentage of patients in Cameroon, type O is not as common as type M, despite the fact that there are approximately 100,000 HIV patients of this type in Western Central Africa. The researchers transplanted the SIV strain into human cells in mice. The experimental results show that compared with the SIV virus not found in humans, mice are less likely to be infected by M SIV and the special Cameroon virus. Li Qingsheng said: "Based on this experiment, we can clearly see the differences between these strains, which means that one person's contact with another strain will cause differences in interspecies transmission." At the same time, the researchers also found that when SIV After the strain enters the cell, it can overcome the unique obstacle that humans have long been questioned by researchers in infecting humans with viruses. Li Qingsheng and others pointed out that the recent outbreak of Zika virus emphasized the importance of identifying viruses that infect humans from animals.