Scientists are eager to identify bacterial infection of the new virus can improve health, or affect susceptibility under certain conditions.
According to a new study A survival in the human intestinal virus has just been discovered, scientists were surprised that the virus can actually be found in nearly half the population of the world body.
Bioinformatics professor at San Diego State University, Robert Edwards (Robert Edwards) is one of the researchers of the study. He said: But now the mechanism of the virus is unclear, scientists hope to identify as soon as possible whether it can improve health, or affect susceptibility under certain conditions.
After the researchers analyzed 12 human subjects in the waste of DNA, for the first time revealed the virus clues. Edwards said, they found that all the samples have the same set of viral DNA.
Next, researchers collected several people there from different continents of the samples taken, they look for DNA sequences of the viral gene sequences in this large database, and found the virus in 75 percent of human excreta samples. Edwards said, however, there are some of these samples from the same person, with this in mind, the researchers estimate that the virus is present in nearly half of the human body.
But why this virus is so widespread it was not discovered until now Edwards said that one reason may be that before, most researchers only the new DNA sample obtained from the known sequence comparison and DNA. But in the latest study, the researchers first sample DNA comparison to each other, to find the same gene sequence.
Edward Leif Sainz (Edwards Live Science) said: We did a number of different types of comparison, the results let us thoroughly aware of its importance, because the comparison is very varied.
The new virus is called the researchers: crAssphage, a bacteriophage virus, which means that it infects bacteria. According to the study, crAssphage likely infection called "Bacteroides" common intestinal bacteria.
Although researchers have shown that the viral DNA is present in nature, but they can not replicate the virus in the laboratory, but also did not get a picture of it.
Edward said: "We know it's there, but it does not fully capture it."
Edward and then said: researchers believe that the virus may be involved in controlling intestinal Bacteroides number.
Institute of Infectious Diseases, MD University of Pittsburgh and the United States on behalf of infectious diseases A Maishen Adara (AmeshAdalja) said: This new discoveries help researchers understand how the gut microbes affect human health, "added a difficult problem." He was not involved in the study. He said the need to do more research to understand how the virus is interacting with the intestinal bacteria, as well as how it might affect health. Ardara said that this phage was found set will open up a lot of research methods.
Ardara said widespread presence of the virus does not mean it is benign. "It's so many people who exist in fact means that no matter what you're doing does not lead to a rare thing, but it may produce play a role in many diseases affecting human epidemic - for example, like obesity, cancer."
(Author: Rachael Translation: Zhu Lin)
This article has copyright by the daily newspaper http://zhidao.baidu.com/daily Baidu know or provided by content partners authorized without written permission Daily Baidu know, any third party individual or organization may not be copied, reproduced excerpts, mirrors or in any other way use. Baidu know the daily chase responsibility and rights reserved. Contact mailbox zhidaoribao@baidu.com
Article Source: Baidu know daily (http://zhidao.baidu.com/daily)
Original link: http: //zhidao.baidu.com/daily/view id = 680?