Rifabutin

Part of speech: noun

Definitions

1. A medication used to treat bacterial infections by killing or stopping the growth of bacteria; an antibiotic primarily employed against tuberculosis and other mycobacterial diseases; a drug that may help prevent certain infections in immunocompromised individuals
2. A pharmaceutical agent utilized to combat bacterial pathogens by hindering their reproduction; a treatment designed especially for tuberculosis and similar infections caused by mycobacteria; a protective antibiotic that reduces infection risks in those with weakened immune systems
3. An antibacterial drug effective in managing tuberculosis by disrupting bacterial activity; a medicinal compound used in the prevention and treatment of mycobacterial diseases; a therapeutic substance given to patients prone to infections due to compromised immunity

Etymology: Rifabutin belongs to a family of drugs named after rifamycin, the antibiotic first isolated in the 1950s from a soil-dwelling bacterium, "Amycolatopsis rifamycinica" (formerly "Streptomyces mediterranei"). The name itself is a chemical coinage: "rifa-" marks the molecule as a rifamycin derivative, and the "-butin" ending is a pharmaceutical naming element added to distinguish this particular modification from its relatives. Many antibiotics are named in this way, so the word records a chemical lineage rather than a story about a person or an accident. The practical point of the name is its link to rifampicin, the better-known rifamycin used against tuberculosis. Rifabutin was developed as a close relative with a somewhat different spectrum, and it is valued for treating mycobacterial infections, including those that affect people with severely weakened immune systems. Its chemistry allows it to block the bacterial enzyme that copies RNA, which stops the pathogen from reproducing.

Synonyms: rifamycin, antibiotic