Current treatments for Alzheimer’s disease have limited effects. While they can slow cognitive decline or alleviate symptoms, they do not reverse this complex neurodegenerative condition caused by multiple factors. Researchers from the Gladstone Institutes and the University of California, San Francisco (UCSF) have screened FDA-approved drugs in search of agents that could potentially modify the disease.

We all look different to HIV, a virus that destroys the immune system. The defensive cells record every interaction with foreign agents, infections from viruses and bacteria, but also with mechanisms occurring within the body, such as microbiome metabolism, the effects of aging, or the development of diseases. At a preconference session at the 13th IAS Conference on HIV Science (IAS 2025), scientists explained the interactions of different microorganisms with HIV.

While people living with HIV can lead virtually normal lives thanks to antiretroviral therapy (ART), HIV persists in a latent state within cellular reservoirs that scientists do not know how to eliminate. “Transcription is a critical step in the viral life cycle. … But there are currently no drugs suppressing HIV transcription, and that may be one of the reasons why current antiretroviral therapy is not curative,” Melanie Ott told the audience at the 13th IAS Conference on HIV Science this week in Kigali, Rwanda.

Lizards, zebrafish, salamanders and tritons can regrow a tail, a fin, or even an entire limb after amputation. Cut a planarian into pieces, and you will end up with a bunch of them. Researchers at the National Institute of Biological Sciences in Beijing have discovered a genetic switch linked to vitamin A. After activating this pathway, they managed to regenerate the ear pinna of a mouse, an animal that previously lacked this ability.

Cellular atlases and omics studies, such as genomics, transcriptomics and proteomics, have become key tools for identifying the diversity of all the elements that make up the cardiovascular system. These approaches help scientists understand how cells, genes and molecules function and interact in both healthy and diseased conditions, revealing critical points where targeted interventions could not only relieve symptoms but potentially reverse the underlying pathology at its origin.

All kinds of substances circulate through the bloodstream. Some are beneficial, like oxygen or nutrients, and others less so, like waste products, toxins, pathogens and certain trafficking cells. Among these harmful substances are deleterious factors associated with aging, which can prematurely damage different tissues. The big question is what are those factors that mediate such effects, and what can be done to prevent them. The 11th Cardiac Regeneration and Vascular Biology Conference, held on the Island of San Servolo, Venice, from June 30 to July 2, 2025, included presentations, oral sessions and posters addressing the impact of aging on the cardiovascular system.

Lizards, zebrafish, salamanders and tritons can regrow a tail, a fin, or even an entire limb after amputation. Cut a planarian into pieces, and you will end up with a bunch of them. Researchers at the National Institute of Biological Sciences in Beijing have discovered a genetic switch linked to vitamin A. After activating this pathway, they managed to regenerate the ear pinna of a mouse, an animal that previously lacked this ability.

A healthy life for a healthy heart is a popular saying. However, even when following good habits, heart health can be already compromised from the very earliest stages of development. Maternal cells reach the embryo through the placenta contributing to its normal formation. So, just as the mother helps form a functional heart, she can also induce a condition that may not appear until adulthood.

Lizards, zebrafish, salamanders and tritons can regrow a tail, a fin, or even an entire limb after amputation. Cut a planarian into pieces, and you will end up with a bunch of them.

An experimental drug for treating diabetes and obesity has been shown to lower blood sugar levels and increase fat burning. It is a β2-adrenergic receptor (β2AR) agonist that mimics the effects of physical exercise by activating skeletal muscle metabolism. Unlike GLP-1-based treatments such as semaglutide and tirzepatide, this new compound, developed by researchers at the Karolinska Institute, Stockholm University, and the biotech company Atrogi AB, does not suppress appetite or cause muscle loss.