Articles tagged with Human Immunodeficiency Virus
A new study suggests that male circumcision can overcome cultural and safety concerns, increasing penile sensitivity and reducing risky behaviors. Implementing circumcision programs in eastern and southern Africa could prevent an estimated two million HIV infections over the next decade.
A study found that a rectal tenofovir gel can prevent the transmission of an AIDS-like virus in macaques. The gel was applied before exposure and protected most animals from infection. However, more research is needed to confirm its effectiveness in humans.
A study published in The Lancet Infectious Diseases found that the common HIV infectivity rate of 1 transmission per 1000 contacts is inaccurate and significantly underestimates actual transmission rates. The study estimated varying degrees of risk, including a 300-fold difference between different types of contact.
A study of HIV-infected crack users found that nearly half reported unprotected sex in the last six months, highlighting a pressing need for targeted interventions. The five-year HOPE study aims to improve engagement in care and prevention services, particularly for female users.
A study of 3,116 patients with and without a history of injection drug use found similar survival rates after 4-5 years of receiving HAART. The results challenge the prevailing notion that IDUs may not derive full benefits from HAART due to social instability.
A study found that low-dose growth hormone treatment reduced visceral adipose tissue and improved blood pressure in HIV-infected patients with abdominal obesity. However, it also increased glucose levels during glucose tolerance testing, highlighting the need for caution when using growth hormone therapy in this population.
A study of 883 treatment-naïve HIV patients found that atazanavir/ritonavir once daily was as effective as lopinavir/ritonavir twice daily in reducing viral load and increasing CD4 cells. The once-daily regimen had less gastrointestinal toxicity but a higher rate of hyperbilirubinemia, supporting its use as a first-line treatment option.
A recent study published in the peer-reviewed journal AIDS found a significant association between bacterial vaginosis and an increased risk of HIV infection. The analysis of over 30,700 women from around the world showed that women with BV were more likely to acquire HIV than those without it.
A McGill University study reveals that previously ignored parts of the HIV genome play a key role in developing drug resistance. The research explains how these hidden mutations affect the virus, providing new insights into HIV treatment.
A special supplement in the AIDS journal offers concrete recommendations for addressing social and economic issues fueling HIV, including building a diverse group of leaders and integrating treatment programs. The edition outlines actionable goals and calls for accountability to combat the epidemic more efficiently.
A new study published in The Lancet warns that HIV transmission could quadruple in certain populations if people with HIV follow potentially misleading advice. Mathematical modeling predicts that HIV transmission would be four times higher in serodiscordant couples who abandon condom use.
Researchers found that combination antiretroviral therapy (cART) increased life expectancy for HIV patients by more than 13 years. The study, published in The Lancet, analyzed data from 43,355 HIV-positive participants and found a nearly 40% drop in AIDS deaths.
Researchers at Wake Forest University Baptist Medical Center have disproven the long-held belief that hepatitis C virus slows immune system recovery after HIV treatment. The study found no difference in CD4 cell restoration between co-infected and mono-infected patients, suggesting other factors are at play.
The HIV/AIDS epidemic affects nearly 2 million people in Latin America and the Caribbean, with most transmission through unprotected sex. The region faces unique challenges due to socio-economic disparities, homophobia, and lack of access to healthcare and education.
A recent study estimates that if couples stop using condoms, HIV incidence could easily quadruple over 10 years. The risk of transmission from effectively treated patients is low but non-zero, and transmission risks are higher in male homosexual partnerships.
The presence of an impurity called ethyl methanesulfonate (EMS) in Roche's Viracept HIV medication did not increase patients' risk of developing cancer, according to new research confirmed by the European Committee for Human Medicinal Products (CHMP).
Studies show a significant increase in life expectancy among HIV-positive individuals on combination antiretroviral therapy (cART), with total life expectancy rising from 56.1 years to 69.4 years between 1996-99 and 2003-05. However, patients treated late in the course of their infection have worse life expectancy.
A regimen of extended-dose nevirapine reduced the risk of infants contracting HIV via breastfeeding by 20% at six months of age. The study found a significant reduction in HIV transmission at six weeks of age, but access to safe replacement feeding remains crucial.
Researchers propose integrating TB prevention and treatment into HIV care to address the major cause of mortality among HIV patients. The authors recommend intensified TB case finding, preventive isoniazid therapy for non-TB infected HIV patients, and earlier provision of antiretroviral therapy.
TB is a threat throughout the course of HIV disease, and addressing it is crucial for saving patient lives and curbing the global TB burden. The authors propose several strategic approaches, including intensified case finding, treating individuals with active TB, and implementing infection control measures.
Social taboos and stigma surrounding homosexuality make it difficult to control the HIV epidemic among Pakistani men who have sex with men. Outreach programs need to target subpopulations and address specific challenges such as promoting safe sex and reducing stigma around condoms.
A novel computational model illustrates how HIV evades the human immune system through 'escape mutants', which can lead to AIDS progression. The study suggests a new vaccine design approach by reducing viral replicative capacity.
A gene variant found only in people of African ancestry increases the risk of becoming infected with HIV-1, but those who carry it may live up to two years longer after infection. The variant affects a protein on red blood cells that is also involved in protecting against malaria.
A genetic variation that protects against malaria increases susceptibility to HIV by up to 40%, yet also prolongs survival by approximately two years. This finding highlights the complex relationship between genetics and HIV/AIDS, with implications for targeted prevention strategies.
Researchers at UT Medical School have pinpointed the Achilles heel of HIV in the envelope protein gp120, a region essential for viral attachment to host cells. Engineered antibodies with enzymatic activity, or abzymes, can attack this weak spot, offering new hope for therapeutic intervention and prevention.
Exhausted B cells hinder HIV-infected individuals' ability to clear the virus from their bodies. Researchers found that these cells produce low-quality antibodies, making it challenging to develop an effective vaccine.
A study published in the journal Addiction found that sexual behavior counseling during drug addiction treatment can decrease risky sexual behavior and HIV transmission in Russian substance-dependent individuals. The PREVENT program, a behavioral intervention, was effective in increasing safe sex among participants.
A new study led by NYU Dentistry shows that weak HIV viruses can replicate and contribute to AIDS development through cooperative interaction with stronger viruses. This mechanism enables some viruses to reproduce faster and evade immune responses.
A team of researchers has developed a new infant formula that captures the HIV virus, preventing its transmission through breastfeeding. The formula contains a special strain of probiotic lactobacilli that can survive in hot climates and provides long-lasting protection.
Access to antiretroviral therapy has been associated with substantial reductions in HIV incidence. Expanded access can reduce AIDS-related illness and deaths, making it a viable prevention strategy.
A study found that 55-93% of new HIV infections among adults in urban Zambia and Rwanda occur within marital or cohabiting couples, with potential for increased transmission if non-cohabiting partners use condoms. Interventions targeting couples could avert 36-60% of heterosexually transmitted infections.
Research highlights the association between diabetes and hearing loss, as well as the potential health benefits of moderate coffee consumption. A new study also examines the cost-effectiveness of HIV screening in patients over 55 years old, finding it a viable option for this age group.
Researchers recommend HIV screening for most adults aged 55 to 75 due to its cost-effectiveness and potential to prolong life. The study found that screening in this age group could add half a year to the life of an HIV-positive patient under 65 and four months for those over 65.
Researchers found a faster disease course and increased HIV entry in patients with the apoE4 allele. The study suggests apoE4 may have clinical applicability in treating both Alzheimer's and HIV diseases.
Women were more likely than men to approach gender-matched brochures and retain information from them. The study found significant gender differences in exposure to the intervention, including women reading more brochures and retaining more information.
Global gay communities are experiencing a decline in physical infrastructure and attendance at events. The rise of online dating and achievement of civil rights contribute to this shift.
A randomized trial found that extending antiretroviral regimens can significantly reduce mother-to-child HIV transmission. Infants receiving extended prophylaxis had lower rates of HIV infection compared to those receiving standard care.
The Healthcare Foundation of NJ awards Rutgers College of Nursing faculty member Rachel Jones a one-year $154,400 grant to create a series of 12 soap opera-style videos reducing HIV risk among young urban women. The new video series is based on real stories told by women in focus groups.
The UN's strategy on dealing with HIV and illicit drugs needs a complete overhaul, according to a Comment published in The Lancet. The authors argue that the International Narcotics Control Board undermines recognition of HIV prevention measures for those who use drugs.
Using total internal reflection microscopy, researchers have observed hundreds of thousands of molecules coming together to form a single HIV particle. The technique allows scientists to study the assembly process in real-time and gain insights into viral behavior.
Scientists have identified CAML as a human host restriction to HIV release, which can now be overcome by Vpu. This discovery may lead to new treatments for HIV, as researchers are working on defining the mechanism and developing therapies.
Researchers at North Carolina State University have successfully reinvigorated a failed HIV drug by adding gold nanoparticles, which enhances its binding capability and prevents the virus from gaining a foothold. This innovative approach offers new hope for treating HIV infection.
The NIAID research program aims to uncover mechanisms to enable scientists to outwit HIV and stimulate the production of long-lasting antibodies that can neutralize many strains of the virus. By understanding how B cells recognize antigens and producing broad-spectrum antibodies, researchers hope to develop a preventive HIV vaccine.
A new study reveals that among billions of HIV variants, only a few lead to sexual transmission. The researchers used genetic analysis and mathematical modeling to identify precisely those viruses responsible for HIV transmission.
Dr. Fauci outlines the peaks and valleys of HIV/AIDS research, from initial diagnosis challenges to breakthroughs with protease inhibitors and combination therapies. He emphasizes the need for continued research into a cure and prevention through vaccine development.
A new compound has been developed that targets the flap recognition pocket of the HIV-1 protease, inhibiting its activity. This mechanism is distinct from current protease inhibitors and holds promise for a new class of AIDS drugs with better drug-like properties.
Researchers have discovered that reverse transcriptase, the target of major anti-HIV drugs, can flip between binding orientations to facilitate two distinct catalytic activities. This dynamic behavior is regulated by nonnucleoside RT inhibitors, which hinder the enzyme's ability to convert single-stranded DNA to double-stranded DNA.
A program in rural India found that round-the-clock rapid HIV testing in labor wards reduced the risk of mother-to-child transmission. The study demonstrated the feasibility of such a program, which led to reduced morbidity and improved health outcomes for mothers and their children.
A new saliva-based HIV test has been developed by an MUHC team, providing rapid detection in approximately 20 minutes. The test uses oral mucosal transudate and has been shown to accurately identify HIV-positive individuals, particularly in vulnerable populations.
Researchers at Stanford University have synthesized a compound that can be tailored to flush HIV out of hiding and into the crosshairs for targeted destruction. By synthesizing prostratin and DPP, two compounds found in plants, scientists can now tackle the virus more effectively.
Climate change poses a significant threat to global HIV rates, exacerbated by economic pressures and food scarcity. The event aims to address the topic of an HIV-free future and features discussions on prevention, antiretroviral therapy, and integrated care.
A University of Minnesota study found that online interventions can help reduce HIV risk among young men who have sex with men. The research showed that meeting partners both online and offline increases the number of sexual partners and engagement in unprotected anal intercourse.
A study in the Ivory Coast found that involving male partners in prenatal screening and HIV prevention increased acceptance of testing among women. Psychosocial support during key moments improved handling of the infection, while male partner involvement led to a significant increase in women agreeing to testing.
A new study has identified a human protein that can be targeted to block HIV infection, offering a potential breakthrough in the fight against AIDS. By inactivating this protein, called interleukin-2-inducible T cell kinase (ITK), researchers have found that HIV's ability to infect and replicate within immune cells is slowed or blocked.
A year-long pilot project trained barbers as peer educators to reach low-literacy rural communities in India, distributing educational materials and condoms. The program showed positive effects, including increased social recognition for women peer educators and a rise in customers among barber clients.
Research published in PLOS Medicine found that interleukin-6 levels are associated with coronary heart disease, suggesting it could be a target for drug development. Two new methods were also developed to estimate HIV incidence based on changes in cross-sectional prevalence, showing sufficient accuracy for monitoring the epidemic.
A study published in The Lancet found that recent use of abacavir and didanosine was associated with an increased rate of heart attacks, while cumulative use showed no association. The researchers suggest underlying biological mechanisms may be responsible for the increased risk.
Researchers have discovered how HIV evades the immune system by altering a key defence mechanism. The Nef protein interferes with the recognition of infected cells, making it difficult for the body to target and eliminate the virus.
The rapid growth of the HIV/AIDS epidemic in London during the late 1990s was driven by transmission within clusters of sexual contacts, with individuals frequently passing the virus to others after becoming infected. Phylogenetic analysis revealed six large clusters and many smaller ones based on genetic relatedness of HIV viruses.
A multidisciplinary team from the University of Illinois has solved the mystery of how the HIV virus's TAT protein crosses cell membranes. The findings reveal that the protein creates a 'saddle splay curvature' in the membrane, making it porous and allowing molecules to pass through.