The rise of antibiotic-resistant bacteria has initiated a quest for alternatives to conventional antibiotics. One potential alternative is PlyC, a potent enzyme that kills the bacteria that causes strep throat and streptococcal toxic shock syndrome. PlyC operates by locking onto the surface of a bacteria cell and chewing a hole in the cell wall large enough for the bacteria's inner membrane to protrude from the cell, ultimately causing the cell to burst and die.
Scientists have discovered a gene that interferes with the clearance of hepatitis C virus infection. They also identified an inherited variant within this gene, Interferon Lambda 4 (IFNL4), that predicts how people respond to treatment for hepatitis C infection. The results of this study, by investigators at the National Cancer Institute (NCI), part of the NIH, and their collaborators at NIH and other institutions, were published online in Nature Genetics on Jan. 6, 2013.
Childrens ear infections cause more than pain and sleepless nights; they temporarily disrupt hearing when children are at a critical age for speech and language development. They also have major social and economic costs. But while infants and children receive immunizations against infections caused by Haemophilus influenzae and pneumococcus, there is no vaccine against Moraxella catarrhalis, an increasingly prevalent bacterium that causes at least 10 percent of otitis media cases.
Researchers have demonstrated a new technology that combines a laser and electric fields to create tiny centrifuge-like whirlpools to separate particles and microbes by size, a potential lab-on-a-chip system for medicine and research.
Researchers have discovered a new compound that restores the health of mice infected with methicillin-resistant Staphylococcus aureus (MRSA), an otherwise dangerous bacterial infection. The new compound targets an enzyme not found in human cells but which is essential to bacterial survival.