News / Health

Study: Gut Bacteria Worsen AIDS

x
Jessica Berman
Infection with the virus that causes AIDS alters the balance of bacteria which normally live in the gut, according to researchers, and that may shorten the lives of HIV-positive patients, even though they are treated with anti-viral drugs. The finding suggests that antibiotics may extend their lives.

Everyone has bacteria in their large intestine, some of which help digest food and others that may cause disease.  In healthy people, this microbial community is kept in check by the immune system.  But in people who are HIV positive, researchers say it appears the infection may recruit harmful gut microbes in greater numbers that further inflammation, leading to life-shortening chronic diseases.  

Ivan Vujkovic-Cvijin is a biomedical researcher at the University of California San Francisco.  

He says investigators studied the community of bacteria that live in the lining of the large intestine in patients infected with HIV, and compared the profile of microorganisms to that of healthy individuals.  

Vojkovic-Cvijin says they saw greater numbers of so-called “bad bacteria,” including E. coli, Salmonella and Staphylococcus, in AIDS patients, causing inflammation that may be posing an extra challenge to their already compromised immune systems.

“And we think that this may be detrimental to people that are infected with the virus and may actually increase the rate at which people may develop AIDS, which is the destruction of the immune system as a result of HIV," said Vujkovic-Cvijin.

Researchers took small tissue samples from the large intestines of 24 patients with HIV.  They analyzed the samples using a type of molecular “barcode scanner,” which allowed them to detect more varieties of gut microbes than the traditional method of growing microorganisms in laboratory dishes.

The implication of the discovery, according to Vujkovic-Cvijin, is that treating HIV positive individuals with antibiotics may slow the progression of the infection and lengthen their lifespans, which tend to be shorter than average despite treatment.

“Work like this suggests that while anti-retroviral drugs attack the virus, there may be other problems, such as this deregulation of the community of bacteria that live in the gut.  And we think maybe by restoring this community back to healthy state, we may actually be able to help those lifespans back to normal," he said.

Vojkovic-Cvijin says more research is needed to see whether antibiotics actually improve the ability of AIDS patients to fight their disease.

An article on gut bacteria in HIV patients is published in the journal Science Translational Medicine.  

You May Like

Somalia: No Popular Elections in 2016

In interview Wednesday with VOA, President Mohamud says 'one person, one vote' elections will not be possible due to continuing insecurity More

Scientists Predict Climate Change Will Increase Child Malnutrition

Public health expert in Germany says that by 2050, 25 million more children's lives will be put at risk because of lack of nutrients tied to climate change More

Erdogan in China Amid Tensions on Uighurs, Missile System

Turkey's president has criticized China's heavy-handed policies toward Uighurs in violence-plagued Xinjiang region, where China says it is fighting foreign-backed separatists More

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Russia Accused of Abusing Interpol to Pursue Opponentsi
X
Henry Ridgwell
July 28, 2015 9:53 PM
A British pro-democracy group has accused Russia of abusing the global law enforcement agency Interpol by requesting the arrest and extradition of political opponents. A new report by the group notes such requests can mean the accused are unable to travel and are often unable to open bank accounts. VOA's Henry Ridgwell reports.
Video

Video Russia Accused of Abusing Interpol to Pursue Opponents

A British pro-democracy group has accused Russia of abusing the global law enforcement agency Interpol by requesting the arrest and extradition of political opponents. A new report by the group notes such requests can mean the accused are unable to travel and are often unable to open bank accounts. VOA's Henry Ridgwell reports.
Video

Video Genome Initiative Urgently Moves to Freeze DNA Before Species Go Extinct

Earth is in the midst of its sixth mass extinction. The last such event was caused by an asteroid 66 million years ago. It killed off the dinosaurs and practically everything else. So scientists are in a race against time to classify the estimated 11 million species alive today. So far only 2 million are described by science, and researchers are worried many will disappear before they even have a name. VOA’s Rosanne Skirble reports.
Video

Video Scientists: One-Dose Malaria Cure is Possible

Scientists have long been trying to develop an effective protection and cure for malaria - one of the deadliest diseases that affects people in tropical areas, especially children. As the World Health Organization announces plans to begin clinical trials of a promising new vaccine, scientists in South Africa report that they too are at an important threshold. George Putic reports, they are testing a compound that could be a single-dose cure for malaria.
Video

Video Special Olympics Athletes Meet International Friends

The Special Olympics are underway in Los Angeles, California, with athletes from 165 countries participating in an event that gives people with intellectual disabilities the chance to take part in an international competition. VOA's Mike O'Sullivan reports that for athletes and their families, it's also an opportunity to make new friends in an international setting.
Video

Video 'New York' Magazine Features 35 Cosby Accusers

The latest issue of 'New York' magazine features 35 women who say they were drugged and raped by film and television celebrity Bill Cosby. The women are aged from 44 to 80 and come from different walks of life and races. The magazine interviewed each of them separately, but Zlatica Hoke reports their stories are similar.
Video

Video US Calls Fight Against Human Trafficking a Must Win

The United States is promising not to give up its fight against what Secretary of State John Kerry calls the “scourge” of modern slavery. Officials released the country’s annual human trafficking report Monday – a report that’s being met with some criticism. VOA’s National Security correspondent Jeff Seldin has more from the State Department.
Video

Video Iran Nuclear Pact Wins Few New US Congressional Backers

Later this week, President Barack Obama returns from a trip to Africa to confront a U.S. Congress roiled by the nuclear accord with Iran, an agreement that has received the blessing of the U.N. Security Council. Days of intensive lobbying and testimony by top administration officials have won few new congressional supporters of the pact. VOA’s Michael Bowman reports.
Video

Video Washington DC Underground Streetcar Station to Become Arts Venue

Abandoned more than 50 years ago, the underground streetcar station in Washington D.C.’s historic DuPont Circle district is about to be reborn. The plan calls for turning the spacious underground platforms - once meant to be a transportation hub, - into a unique space for art exhibitions, presentations, concerts and even a film set. Roman Mamonov has more from beneath the streets of the U.S. capital. Joy Wagner narrates his report.
Video

Video Europe’s Twin Crises Collide in Greece as Migrant Numbers Soar

Greece has replaced Italy as the main gateway for migrants into Europe, with more than 100,000 arrivals in the first six months of 2015. Many want to move further into Europe and escape Greece’s economic crisis, but they face widespread dangers on the journey overland through the Balkans. VOA's Henry Ridgwell reports.
Video

Video Stink Intensifies as Lebanon’s Trash Crisis Continues

After the closure of a major rubbish dump a week ago, the streets of Beirut are filling up with trash. Having failed to draw up a plan B, politicians are struggling to deal with the problem. John Owens has more for VOA from Beirut.
Video

Video Paris Rolls Out Blueprint to Fight Climate Change

A U.N. climate conference in December aims to produce an ambitious agreement to fight heat-trapping greenhouse gases. But many local governments are not waiting, and have drafted their own climate action plans. That’s the case with Paris — which is getting special attention, since it’s hosting the climate summit. Lisa Bryant takes a look for VOA at the transformation of the French capital into an eco-city.
Video

Video Racially Diverse Spider-Man Takes Center Stage

Whether it’s in a comic book or on the big screen, fans have always known the man behind the Spider-Man mask as Peter Parker. But that is changing, at least in the comic book world. Marvel Comics announced that a character called Miles Morales will replace Peter Parker as Spider-Man in a new comic book series. He is half Latino, half African American, and he is quite popular among comic book fans. Correspondent Elizabeth Lee reports from Los Angeles.
Video

Video Critics of Japan Defense Policy Focus on Okinawa

In Okinawa, many locals have long complained that Tokyo places an unfair burden on the tiny island by locating most of Japan's U.S. military bases there. As Japan's government moves toward strengthening and expanding the country's defense policies, opponents of those plans are joining local protesters in Okinawa, voicing concern about where the country is headed. VOA’s Brian Padden reports from Okinawa.
Video

Video IS Uses Chemical Weapons in Syrian Attack

Islamic State militants have added a new weapon in their arsenal of fear: chemical weapons. VOA Kurdish service reporter Zana Omer was on the scene within hours of a recent attack in Hasakah, Syria, and has details of the subsequent investigation, in this report narrated by Miguel Amaya.
Video

Video Historic Symbol Is Theme of Vibrant New Show

A new exhibit in Washington is paying tribute to the American flag with a wide and eclectic selection of artwork that uses the historic symbol as its central theme. VOA’s Julie Taboh was at the DC Chamber of Commerce for the show’s opening.

VOA Blogs