Scientists Investigate How the 'Sense of Smell' Works in Bacteria
May 19th 2017Scientists from MIPT, in collaboration with their colleagues from the Forschungszentrum Jülich, the Institut de Biologie Structurale (IBaS) and European Synchrotron Radiation Facility (ESRF) in Grenoble, have proposed a universal mechanism for the "sense of smell" in bacteria. This was done by obtaining the structure of the NarQ protein from Escherichia coli (E. coli) -- which belongs to a universal class of sensory histidine kinases that are responsible for transmitting signals to bacteria about their environment. The paper published in Science will help us understand how bacteria "communicate" with one another and form biofilms on sterile surfaces or inside the human body.
NIH Issues Statement on HIV Vaccine Awareness Day
May 18th 2017Anthony S. Fauci, MD, director of the NIAID, and Carl W. Dieffenbach, PhD, director of the Division of AIDS at NIAID, have issued the following statement: "Much progress has been made in HIV/AIDS research since the disease was first recognized in 1981. Today, lifesaving antiretroviral therapies allow those living with HIV to enjoy longer, healthier lives - an outcome that once seemed unattainable. Research supported by the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health (NIH), has proven that when antiretroviral therapy durably keeps HIV at undetectable levels, the risk that the treated individual will sexually transmit the virus to an HIV-negative partner is negligible. When implemented in communities, treatment as prevention is remarkably successful at preventing the spread of HIV infection. Pre-exposure prophylaxis, or PrEP, is another prevention strategy in which HIV-negative people take one pill a day to reduce their risk of acquiring the virus. This intervention is highly effective when individuals adhere to the drug regimen.
Researchers Connect Brain Blood Vessel Lesions to Intestinal Bacteria
May 18th 2017A study in mice and humans suggests that bacteria in the gut can influence the structure of the brain's blood vessels, and may be responsible for producing malformations that can lead to stroke or epilepsy. The research, published in Nature, adds to an emerging picture that connects intestinal microbes and disorders of the nervous system. The study was funded by the National Institute of Neurological Disorders and Stroke (NINDS), a part of the National Institutes of Health (NIH).
Scientists Synthetically Re-create Zika Virus in the Lab
May 17th 2017Brisbane researchers have synthetically re-created Zika virus in the laboratory, a breakthrough which will help to understand the virus and the fetal brain defects it causes. The collaborative research was led by University of Queensland School of Chemistry and Molecular Bioscience's professor Alexander Khromykh and professor Andreas Suhrbier from QIMR Berghofer Medical Research Institute.
TB Bacteria Evolve at an Alarming Rate
May 16th 2017Researchers from the Vavilov Institute of General Genetics of the Russian Academy of Sciences (VIGG) and the Moscow Institute of Physics and Technology (MIPT) have established a catalog of mutations in 319 virulence genes of mycobacteria that cause tuberculosis. These genes encode proteins that suppress human immune response. Further analysis identified a set of three mutations which may enable mycobacteria to develop rapidly in an immunocompromised environment. The emerging strains of TB pathogens require new treatment approaches including the development of new genetically engineered vaccines that take into account both the immune status of a patient and the specific virulence features of a pathogen. The article was published in Genome Biology and Evolution (Oxford University Press, UK).
New Zika Virus Inhibitor Identified
May 16th 2017New research led by Alexey Terskikh, PhD, associate professor at Sanford Burnham Prebys Medical Discovery Institute (SBP), and Alex Strongin, PhD, professor at SBP, could be a first step toward a drug to treat Zika infections. Publishing in Antiviral Research, the scientific team discovered a compound that prevents the virus from spreading.
Lives to Be Saved with New Ebola Management Approach
May 16th 2017Ebola outbreaks are set to be managed quickly and efficiently – saving lives – with a new approach developed by an international team of researchers, including the University of Warwick, which helps to streamline outbreak decision-making.
Researchers Create World's First Self-Donning System for Surgical Gowns
May 16th 2017In the healthcare setting, there is an increasing need for a self-donning surgical gown that healthcare personnel can don without the need for any assistance. Also, in the context of crisis management for the Ebola virus and other severe infectious diseases, use of a gown that can be donned and removed quickly and safely as infection protection to prevent transmission to the environment is more important than ever.
Key to Superbug Antibiotic Resistance is Discovered
May 16th 2017An international study led by Monash University has discovered the molecular mechanism by which the potentially deadly superbug staph evades antibiotic treatment, providing the first important clues on how to counter superbug antibiotic resistance.
Researchers Discover a Safer Way to Study Brucella
May 12th 2017Brucellosis is an infectious disease of livestock that may be transmitted to farm workers or consumers of unpasteurized dairy products. Easy to spread and hard to detect, the bacteria that cause the illness, Brucella species, are considered potential bioterror weapons. Yet, precisely because Brucella species are so dangerous to handle, research on this important disease-causing agent, or pathogen, has lagged behind that of other infectious diseases.
Survival of Mass Extinctions Helps Explain Near Indestructible Properties of Hospital Superbugs
May 11th 2017Hospital superbugs enterococci arose from an ancestor that dates back 450 million years -- about the time when animals were first crawling onto land (and well before the age of dinosaurs), according to a new study led by researchers from Massachusetts Eye and Ear, the Harvard-wide Program on Antibiotic Resistance and the Broad Institute of MIT and Harvard. Published online today in Cell, the study authors shed light on the evolutionary history of these pathogens, which evolved nearly indestructible properties and have become leading causes of modern antibiotic-resistant infections in hospitals.