The most unsettling discovery is how widespread mcr-9 already is. While initially found in Salmonella , it has now been detected in:
Enter . Discovered later but potentially more insidious, mcr-9 represents the next generation of silent, inducible colistin resistance. This article dives deep into the biology, epidemiology, detection challenges, and clinical implications of the mcr-9 gene. The most unsettling discovery is how widespread mcr-9
The MCR-9 gene shares similarities with other MCR genes but exhibits distinct genetic and biochemical properties. It encodes a protein that modifies the lipid A component of the bacterial outer membrane, which is the target of colistin. By altering the structure of lipid A, bacteria expressing the MCR-9 gene can evade the bactericidal activity of colistin, thereby achieving resistance. This article dives deep into the biology, epidemiology,
The MCR-9 gene belongs to the MCR family of genes, which are known to confer resistance to colistin. The MCR genes are typically carried on plasmids, which are small DNA molecules within bacteria that can replicate independently of the bacterial chromosome. This allows for the easy transfer of resistance genes between bacteria, contributing to the rapid spread of antibiotic resistance. By altering the structure of lipid A, bacteria