Lamivudine, a commonly used antiretroviral drug for the treatment of HIV, improves cognitive ability in a mouse model of Down's syndrome, according to a new study published today in the Journal of Cellular and Molecular Medicine.
Brain lesions that cause spontaneous remission of tobacco addiction in humans affect a brain circuit common to different addictive behaviours, concludes a study published in Nature Medicine. Understanding this brain network opens the way to new therapies against addiction.
Cerebrospinal fluid provides nutrients and other elements to brain cells. Scientists now show that by obtaining it from young mice and injecting it into the brains of old mice, the latter recover their memory. The effect is attributed to a protein, Fgf17, presented today in Nature as a possible brain rejuvenation factor.
A study of 32 million adults in England has shown a small increase in the risk of suffering from Guillain-Barré syndrome and Bell's palsy, two neurological conditions, after receiving AstraZeneca's vaccine. There was also an increased risk of stroke after receiving Pfizer's vaccine. However, according to the paper, these side effects are rare and the chances of suffering them are much higher after SARS-CoV-2 infection.