Researchers elucidated the basic principles of bacterial transport channel assembly, a mechanism used by pathogens to deliver virulence factors. The discovery opens doors to developing anti-infective drugs that can target this process before antibiotics, offering a major advantage in infection treatment.
A new CU-Boulder study provides further support for the idea of a sustained sea on Mars during the Noachian era, suggesting an ancient ocean likely covered about 36% of the planet. The research implies an Earth-like global hydrological cycle, including precipitation, runoff, cloud formation, and ice and groundwater accumulation.
Scientists at Massachusetts General Hospital have developed a technique to grow transplantable replacement livers using the structural tissue of rat livers. The approach involves decellularizing the liver and reseeding it with liver cells, resulting in normal liver function for up to 10 days in culture.
Cardiologists at University Hospitals Case Medical Center have discovered a significant association between angiotensin-receptor blockers (ARBs) and an increased risk of new cancers. The meta-analysis found that patients taking ARBs had a 8-11% higher risk of developing new cancer compared to those taking control medications.
A meta-analysis of publicly available data from randomised trials found that patients taking ARBs had a significantly increased likelihood of new cancer diagnosis compared with patients in control groups. The study also found a modestly increased risk of lung cancer among ARB users, but no significant excess in cancer deaths.
A study of 15,162 children born after assisted reproduction found a major congenital malformation rate of 4.24%, exceeding previous estimates. The majority of malformations were heart diseases and uro-genital system disorders, with a five times higher rate of angioma in girls.
Researchers generally agree that genetic variation findings should be shared with participants if clinically significant, but confidence levels vary across disciplines and conditions. The study highlights the complexity of this issue, suggesting that factors beyond scientific robustness influence researchers' decisions on disclosure.