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Specifically, the investigators showed that more than 90 percent of latent proviruses are genetic duds, so mutated -- even in early stages of disease - - that they no longer function. The findings, described August 8 in  Nature Medicine  online, suggest a pressing need for new ways to count only non-damaged proviruses, because an accurate count is key to guiding and gauging the effectiveness of experimental therapies directed at the latent HIV reservoir. "To cure HIV, you want to get rid of the proviruses without defects," says senior study author Robert Siliciano, M.D., Ph.D., an infectious disease physician and molecular biologist at the Johns Hopkins University School of Medicine. "But our work shows that the standard assays used to do that are measuring forms of the virus that are not really relevant to these cure strategies." HIV infection is currently treated with antiretroviral therapies (ART ) that are effective in blocking the virus from copying itse...

The findings, from a collaboration between Norwegian, British and Argentinian scientists, also show that TB drug resistance is not more likely to evolve in HIV-positive patients compared to HIV-negative patients. "It is already known that a parallel HIV pandemic amplifies the TB epidemic, with ongoing efforts around the world to tackle these potentially fatal diseases," says lead author Vegard Eldholm, a research fellow at the Norwegian Institute of Public Health. "Among the estimated 1.5 million people who died from TB in 2015, about 200,000 cases involved multidrug-resistant TB and 400,000 were HIV co-infected. However, it is not clear exactly how much of an effect HIV has had on drug resistance in the most common form of TB, Mycobacterium tuberculosis (Mtb)." To explore the impact of HIV co-infection on Mtb drug resistance, Eldholm and his team analysed the genomes of 252 TB isolates from patients belonging to the largest outbreak of multidrug-resistant...

As HIV/AIDS has emerged only recently and so far eluded efforts to outwit it, researchers have been looking at imprints left by related viruses in other animals to better understand their origins. Until recently, the oldest known lentiviral lineages -- in lemurs, rabbits and ferrets -- have been found to date back to 3-12 million years ago. Now, a research group led by Daniel Elleder from the Czech Academy of Sciences has used genomic data from the exotic Malayan flying lemur (colugo) to uncover the oldest lentivirus ever identified, whose first emergence may date to as early as 60 million years ago. Three samples of colugo genomic DNA containing lentiviral remnants were sequenced and ancient viral genomes were reconstructed and analyzed. The findings were published in the advanced online edition of  Molecular Biology and Evolution . "We hope that our findings will allow virologists to better understand how lentiviruses evolved and how their hosts developed defenses agains...

Zika definition (inventory picture). Credit score: © Feng Yu / Fotolia A examine printed by  The BMJ  supplies extra particulars of an affiliation between Zika virus an infection within the womb and a situation referred to as arthrogryposis, which causes joint deformities at start, notably within the legs and arms. Microcephaly (a uncommon start defect the place a child is born with an abnormally small head) and different extreme fetal mind defects are the primary options of congenital Zika virus syndrome. Nonetheless, little remains to be identified about different potential well being issues that Zika virus an infection throughout being pregnant might trigger. Till lately there have been no stories of an affiliation between congenital viral an infection and arthrogryposis. After the outbreak of microcephaly in Brazil related to Zika virus, two stories recommended an affiliation, however they did...

While psychological predictors of suicide have been studied extensively, less attention has been paid to the effect of biological factors, such as infection. Helene Lund-Sørensen, B.M., of Copenhagen University Hospital, Denmark, and coauthors used Danish nationwide registers to investigate associations between infectious diseases and the risk of death by suicide. All individuals 15 or older living in Denmark from 1980 through 2011 were included, resulting in study population of more than 7.2 million individuals. A history of infection was defined as one or more infection diagnoses since 1977. Infections were grouped into categories, including pathogen (i.e. bacterial, viral, others) and infection type (i.e. sepsis, hepatitis, genital, central nervous system, HIV or AIDS, etc.). Among the more than 7.2 million individuals, there were 809,384 (11.2 percent) hospitalized with infection during follow-up. There were 32,683 suicides during follow-up and of those 7,892 (24.1 percen...

Postdoc Jinsen Chen, left, and chemistry professor Shiyue Fang within the lab the place Fang's group found a brand new approach to synthesize DNA. Credit score: Michigan Tech Michigan Technological College scientists have developed a course of that might result in stickier -- and higher -- gene remedy medication. The medication, referred to as antisense DNA, are constituted of quick, single strands of artificial DNA. They work by blocking cells from making dangerous proteins, which may trigger maladies starting from most cancers to Ebola to HIV-AIDS. Solely a few these artificial DNA medication are in the marketplace, however a quantity are in medical trials, together with a possible remedy for ALS, also referred to as Lou Gehrig's illness. Illness organisms can inject dangerous proteins into our our bodies, and so can mutations in our personal genetic materials. When Messenger RNA Goes Rogue This...