my health world 28

"The zinc ions in zinc fingers bind to four sulfur or nitrogen atoms of the protein's cysteine and histidine residues," explains Nicholas P. Farrell of Virginia Commonwealth University (Richmond, USA). "Gold ions bind to just two amino acid fragments and change the conformation of the protein. The "gold fingers" are no longer able to bind to nucleic acids, which may be therapeutically useful." Although there are a variety of potential binding sites for metal ions, each metalloprotein usually prefers a single conformation. It was previously not possible to determine where the specific binding sites were in a mixture of conformers. Farrell and his team have now closely examined two gold fingers. According to Farrell, "replacing the zinc in zinc finger 3 of Sp1 transcription factor leads to only a single gold finger species." The researchers identified this as having a linear Cys-Au-His bond. In the case of the HIV nucleocapsid protein, whi...

"Adolescents infected with HIV -- either at birth or later in life -- experience poorer health outcomes compared to adults with HIV in nearly every respect," says Anne Neilan, MD, MPH, of the MGH Division of Infectious Diseases and the Medical Practice Evaluation Center, who led the study. "The good news is that among those with good HIV control, serious health problems are rare." Due to the use of effective antiretroviral therapy in recent decades, fewer than 200 infants per year are born with HIV in the U.S. There now are roughly 10,000 perinatally HIV-infected youth in the U.S., the majority of whom are over age 18. Study co-author George Seage III, DSc, of the Harvard T. H. Chan School of Public Health, says, "This is the first generation of perinatally HIV-infected youth living to adulthood, and they are some of the most inspirational, resilient individuals you have ever met." Neilan explains, "One of the first reports of AIDS in children ...

A new University of Pennsylvania School of Nursing (Penn Nursing) study has investigated this question. The findings suggest that psychoeducation and skills building may help sever the emotion-behavior link that contributes to HIV/STI risk among this demographic. The study, "Feelings Matter: Depression Severity and Emotion Regulation in HIV/STI Risk-Related Sexual Behaviors," which has been published in the  Journal of Child and Family Studies , was designed to examine contextual factors related to HIV/STI risk among heterosexually active black adolescents with mental illnesses. It explicitly focused on depression and emotion regulation to uncover how these factors in?uence sexual decision-making. "Blacks, adolescents , and people with mental illnesses are all disproportionately affected by HIV/STIs," explains the study's lead author Bridgette M. Brawner, PhD, APRN, Assistant Professor of Nursing in the Department of Family and Community Health. "We kn...

The construction of the Zika virus protein NS5, which is essential to the copy and unfold of the virus. Credit score: Cheng Kao, Indiana College A research not too long ago printed exhibits how Indiana College scientists are dashing the trail to new therapies for the Zika virus, an infectious illness linked to start defects in infants in South and Central America and the USA. Cheng Kao, a professor within the IU Bloomington School of Arts and Sciences' Division of Molecular and Mobile Biochemistry, has mapped a key protein that causes the virus to breed and unfold. "Mapping this protein supplies us the flexibility to breed a key a part of the Zika virus in a lab," Kao mentioned. "This implies we will shortly analyze current medication and different compounds that may disrupt the unfold of the virus. Medication to focus on the Zika virus will virtually definitely contain this protein." The World Well being Group studies that greate...

That is an animation depicting an lively TB an infection focusing on the lungs. Credit score: Jason Drees, Biodesign Institute at Arizona State College Tuberculosis (TB), as soon as higher often called consumption for the best way its victims wasted away, has a protracted and lethal historical past, with estimates indicating it could have killed extra individuals than every other bacterial pathogen. Research have found proof of its human influence going again to as early as eight,000 BCE, and estimates counsel that it has killed a billion individuals over the previous two centuries. Now, a gaggle of scientists from Arizona, Texas and Washington DC has teamed as much as develop the primary fast blood take a look at to diagnose and quantitate the severity of lively TB circumstances. Led by Tony Hu, a researcher at Arizona State College's Biodesign Institute, eight analysis teams, together with the Houston Methodist Analysis Institute and scientists on the N...

The researchers used their new methodology to create a map of the floor glycans on an HIV vaccine candidate glycoprotein . (Picture from the Paulson Lab.) Credit score: The Scripps Analysis Institute HIV is a grasp of disguise. The virus makes use of a protect of sugar molecules, referred to as glycans, to cover from the immune system and block antibodies from attacking it. Now scientists at The Scripps Analysis Institute (TSRI) have developed a way to research the glycan protect on HIV's protecting outer glycoprotein, developed as a possible HIV vaccine candidate. With this methodology, scientists can quickly create a "fingerprint" of the glycans on the glycoprotein to inform if they're heading in the right direction in creating an efficient vaccine. "The flexibility to establish the glycan fingerprint on HIV's glycoprotein will assist us develop a vaccine that matches what's discovered on the virus," mentioned James Paul...

In a recent study, the team demonstrated that flipping the switch allows weakened HIV to replicate at a level likely to generate immunity in a host. The researchers then used their approach to switch off this replication at will, a feat that the team said could make its vaccine candidate among the safest yet reported. "Safety is always our biggest concern," said Wei Niu, associate professor of chemical and biomolecular engineering. "In this case, (it means) we're one step closer to generating a vaccine." Vaccinologists often prefer exposing the body to weakened viruses, rather than deactivated ones, because they confer stronger and longer-lasting immunity. But weakened viruses retain the ability to replicate, meaning that they still pose a risk of becoming full-blown pathogens. The Nebraska team began addressing this issue in 2014, when it genetically engineered a version of HIV that needs a synthetic amino acid -- one not found in the body -- to replicate...

he World Health Organization and UNAIDS have proposed using " treatment as prevention" to eliminate HIV in sub-Saharan Africa. The strategy would treat people infected with HIV to reduce their ability to infect others as a way to prevent them from transmitting the infection. UNAIDS has set goals to diagnose 90 percent of HIV-infected people and to treat 90 percent of those diagnosed individuals by 2020. But a new study by UCLA researchers concludes that although the plan sounds laudable, implementing it might not be feasible. The authors used statistical mapping techniques to identify the location of all people who are HIV-infected in Lesotho, a landlocked country within South Africa in which about 1 in 4 adults is infected with the virus. Currently, many of these people have not been diagnosed with HIV and are not receiving treatment. The researchers used their map to design and evaluate HIV elimination strategies. They found that the strategy proposed by the WHO and ...

According to the Centers for Disease Control and Prevention (CDC), it is estimated that anywhere from 850,000 to 2.2 million people in the United States have chronic hepatitis B virus infection and anywhere from 2.7 to 3.9 million people have chronic hepatitis C. While both can lead to serious illness, many people have few symptoms and do not realize they have the virus, especially at first. Hepatitis B is spread through contact with blood and body fluids of an infected person, such as unprotected sex, sharing needles, getting a tattoo or piercing with unsterilized tools or sharing razors or toothbrushes with an infected person. Hepatitis C is spread through blood-to-blood contact such as sharing needles, razors and toothbrushes and is passed on at birth by infected mothers. "The development of Parkinson's disease is complex, with both genetic and environmental factors," said study author Julia Pakpoor, BM, BCh, of the University of Oxford in the United Kingdom. ...

The findings, which appear online in  Scientific Reports , allows for greater understanding of how vaccine enhancers work and can best be used. Researchers from Boston University School of Medicine  (BUSM) purified a protein found on the exterior of bacteria (neisseria meningidis) and used it as an accessary to provide a better vaccination response. Typically, vaccines can either increase the amount of antibody production or they can stimulate cells (called cytotoxic T cells) to directly kill the offending agent. In this case, the protein, called PorB, is unique in that it can do both. "This study has wide implications as it could not only be used to help the body identify and fight off bacterial infections, but it could also potentially help the body use its own machinery to fight off other diseases like cancer, HIV, and influenza before they have a chance to establish within the body," explained corresponding author Lee Wetzler, MD, professor of medicine and microbiol...