Gene therapy reverses heart failure in mouse model of Barth syndrome

Barth syndrome is a rare metabolic disease in boys caused by mutation of a gene called tafazzin or TAZ. It can cause life-threatening heart failure and also weakens the skeletal muscles, undercuts the immune response, and impairs overall growth. There is no cure or specific treatment, but new research at Boston Children’s Hospital suggests that gene therapy could prevent or reverse cardiac dysfunction.
Read More

Study finds lower concentration of PrEP drug in pregnant young women

Among African adolescent girls and young women who took HIV pre-exposure prophylaxis (PrEP) daily, levels of the PrEP drug tenofovir were more than 30% lower in those who were pregnant than in those who had recently given birth. All 40 study participants took PrEP under direct observation, confirming their near-perfect adherence. PrEP drug levels were lower to a similar degree in the pregnant African adolescent girls and young women compared to American men and non-pregnant, non-lactating women who took PrEP daily under direct observation in an earlier study. These findings from the NIH-funded IMPAACT 2009 study were reported today at the Conference on Retroviruses and Opportunistic Infections (CROI).
Read More

New study on COVID-19 estimates 5.1 days for incubation period

An analysis of publicly available data on infections from the new coronavirus, SARS-CoV-2, that causes the respiratory illness COVID-19 yielded an estimate of 5.1 days for the median disease incubation period, according to a new study led by researchers at Johns Hopkins Bloomberg School of Public Health. This median time from exposure to onset of symptoms suggests that the 14-day quarantine period used by the U.S. Centers for Disease Control and Prevention for individuals with likely exposure to the coronavirus is reasonable.
Read More