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HIV subtype linked to increased likelihood for dementia

A new study by Johns Hopkins researchers reveals that HIV subtype D is associated with a significantly higher likelihood of developing dementia. The study found that nearly all (89%) patients infected with subtype D developed dementia, whereas only about 24% of those infected with subtype A showed signs of the condition.

SourceJohns Hopkins Medicine·JournalClinical Infectious Diseases·DateAug 28, 2009

An HIV-blocking gel for women

Researchers at the University of Utah created a vaginal gel that turns semisolid in response to semen, trapping AIDS virus particles. The gel, designed to protect women from HIV infection, works by forming a microscopic mesh that blocks the virus from infecting vaginal cells.

SourceUniversity of Utah·JournalAdvanced Functional Materials·DateAug 9, 2009

Black gay men may be at increased HIV risk

Black gay men are more likely to have tightly interconnected sexual networks, increasing the rapid spread of HIV. Social barriers and racism contribute to these networks, perpetuating health disparities among Black gay men.

SourceSpringer·JournalAIDS and Behavior·DateJun 29, 2009

NIAID media availability: New strategy proposed for designing antibody-based HIV vaccine

Researchers suggest a promising approach to create an antibody-based HIV vaccine by leveraging naturally occurring broadly neutralizing antibodies. By understanding how these antibodies evolve and persist, scientists aim to develop a vaccine that can prime the body to make protective antibodies before exposure to HIV.

UK's appalling failure to tackle HIV

The UK's HIV strategy is being heavily criticized due to its inadequate approach to testing and diagnosis. An estimated 77,000 people are living with HIV in the UK, with 21,000 unaware of their positive status. A third of those diagnosed late could have benefited from treatment if identified earlier.

SourceThe Lancet_DELETED·JournalThe Lancet·DateMay 28, 2009

International team tracks clues to HIV

A research team led by Andrew Barron at Rice University identified specific molecules that can block the spread of HIV-1 PR by attaching themselves to its binding pocket. They used computer simulations to narrow down a collection of fullerenes and found two promising candidates.

SourceRice University·JournalJournal of Chemical Information and Modeling·DateMay 19, 2009

HIV's march around Europe mapped

A recent study has mapped the spread of HIV-1 subtype B across Europe, revealing that popular tourist destinations like Greece, Portugal, and Spain are major sources of infection. The research found that viruses can be transmitted through travelers, highlighting the need for targeted prevention efforts beyond national borders.

SourceBMC (BioMed Central)·JournalRetrovirology·DateMay 19, 2009

Ancestor of HIV in primates may be surprisingly young

Researchers estimated virus evolution using genetic sequences and found that SIV lineages giving rise to HIV-1 and HIV-2 date back to the 18th century. This finding challenges previous estimates of millions of years of coevolution between SIVs and their primate hosts.

SourcePLOS·JournalPLOS Computational Biology·DateApr 30, 2009

Has HIV become more virulent?

A recent study found that HIV-positive patients are entering care with lower initial CD4 cell counts and often require antiretroviral therapy soon after diagnosis. The trend suggests the virus has become more virulent, with a significant increase in patients requiring treatment before reaching the threshold of 350 CD4 cells/mm³.

SourceInfectious Diseases Society of America·JournalClinical Infectious Diseases·DateApr 7, 2009

More compelling evidence on why earlier HIV treatment lengthens survival

A new study published in the New England Journal of Medicine found that starting antiretroviral treatment earlier can significantly increase survival rates among asymptomatic HIV patients. The research, led by Dr. Mari Kitahata at the University of Washington, analyzed data from over 17,500 patients and showed that delaying treatment u...

SourceUniversity of Washington School of Medicine/UW Medicine·JournalNew England Journal of Medicine·DateApr 2, 2009

Redefining DNA: Darwin from the atom up

Researchers have developed a new type of DNA with 12 chemical letters, enabling highly parallel amplification of DNA and diagnosis of human diseases. This breakthrough may shed light on the origins of life and personalization of medicine for millions of patients with HIV, hepatitis, and other diseases.

Researchers progress toward AIDS vaccine

Researchers at Rutgers University have made significant progress in developing an HIV vaccine by identifying a crucial part of the virus that is common to most varieties. They created a method to immunize animals with this target, resulting in antibodies that can stop a diverse set of HIV isolates.

SourceRutgers University·JournalJournal of Virology·DateMar 12, 2009

Researchers unveil new monkey model for HIV

Researchers have successfully infected pig-tailed macaques with a human version of HIV, creating an animal model for studying prevention methods. The new strain, simian-tropic HIV-1 (stHIV-1), can spread almost as quickly as in humans and persists for several months.

SourceRockefeller University·JournalProceedings of the National Academy of Sciences·DateMar 2, 2009

Is HIV testing during labor feasible?

Research in Cameroon reveals that 88.3% of women are willing to accept HIV testing during labor, leading to a higher rate of detected infections compared to previously estimated rates. The study recommends an opt-out approach for HIV testing during labor to increase the number of mother-infant pairs receiving appropriate treatment.

SourceBMC (BioMed Central)·JournalBMC Pregnancy and Childbirth·DateFeb 26, 2009