A metabolite that suppresses appetite and food intake after exercise could be the reason for the weight loss observed in patients treated with metformin to control blood glucose. A study conducted by a group of scientists at Stanford University showed how this antidiabetic drug induced the biosynthesis of N-lactoyl-phenylalanine (Lac-Phe), which has an effect reducing the body mass index.
Scientists at the Weizmann Institute of Science in Israel announced the discovery of the new intestinal microbiota species Kazachstania weizmannii in mice, which competed with and limited the growth of Candida albicans, thus preventing candidiasis. Both microorganisms belong to the Saccharomycetaceae family and reside in humans, maintaining a complex interaction with therapeutic value.
Mapping brain circuits and studying the neural signals that are activated during post-traumatic stress could provide an answer to the generalized fear associated with this disorder. Scientists at the University of California, San Diego have identified a change in the expression of neurotransmitters as an adaptive response that could trigger this effect.
One topic at the 31st Conference on Retroviruses and Opportunistic Infections (CROI 2024) held in Denver this month was that resistance to antiretroviral therapy (ART) has become a public health problem for people living with HIV. Without a vaccine or a cure, these patients depend on treatments that suppress viremia by preventing the virus from replicating. They are lifelong treatments and, until new advances succeed in eradicating the virus from reservoirs, the only option available.
Several presentations at the 31st Conference on Retroviruses and Opportunistic Infections (CROI 2024) held in Denver from March 3 to 6, 2024, focused on childhood HIV and highlighted the lack of pediatric data. The epicenter of this pandemic in the youngest is in the southern region of the African continent. However, there are few studies for children with HIV, mostly for the northern hemisphere.
Overall, the story of HIV is one of astounding success. But to declare victory, it will be necessary to develop a vaccine. The opening session of the 31st Conference on Retroviruses and Opportunistic Infections (CROI) 2024 looked back to the failures but also the advances in research, all the steps that over the years brought the basic science knowledge that could bring an HIV vaccine in the future. This year, the former director of the Viral Pathogenesis Laboratory at the NIAID Vaccine Research Center, Barney Graham, was named for the Bernard Field Lecture, where he presented “Modern vaccinology: a legacy of HIV research.”
On March 4, 2024, several groups of scientists discussed the challenges of investigating the effects of HIV in the central nervous system (CNS) at the oral abstract session on neuropathogenesis of HIV held during the 31st Conference on Retroviruses and Opportunistic Infections (CROI), in Denver. A cure for HIV will require eliminating the virus in all its reservoirs, those tissues where HIV remains latent but retains the capacity for reactivation and replication. However, despite antiretroviral therapy (ART), the virus could continue to replicate continuously at a low level in some reservoirs, including the CNS.
On March 4, 2024, several groups of scientists discussed the challenges of investigating the effects of HIV in the central nervous system (CNS) at the oral abstract session on neuropathogenesis of HIV held during the 31st Conference on Retroviruses and Opportunistic Infections (CROI), in Denver. A cure for HIV will require eliminating the virus in all its reservoirs, those tissues where HIV remains latent but retains the capacity for reactivation and replication. However, despite antiretroviral therapy (ART), the virus could continue to replicate continuously at a low level in some reservoirs, including the CNS.
An Italian group of researchers has used zinc finger editing to silence the PCSK9 gene and improve blood cholesterol levels in mice by applying a single dose of their modifier. The epigenetic-based method could be an alternative to genome editing.
Iron regulates the metabolism of hematopoietic stem cells (HSCs) and acts as a genetic control of their fate, preserving their identity and regenerative capacity during tissue maintenance and repair. A group of scientists at Albert Einstein College of Medicine has described the key components of a molecular pathway that iron regulates. “What we are proposing here with this mechanism is that iron serves like a switchboard and a sensor,” senior author Britta Will told BioWorld. Will is at the Department of Oncology, the Cell Biology Department, and the Ruth and David Gottesman Institute for Stem Cell Research and Regenerative Medicine at Albert Einstein College of Medicine.
