NCI Drug Dictionary

The NCI Drug Dictionary contains technical definitions and synonyms for drugs/agents used to treat patients with cancer or conditions related to cancer. Each drug entry includes links to check for clinical trials listed in NCI's List of Cancer Clinical Trials.

polymyxin-B immobilized fiber PMX-20R
A cartridge containing a polystyrene-based composite woven fiber that is covalently attached to the anti-microbial cyclic cationic polypeptide antibiotic polymyxin-B (PMX) and can potentially be used for hemoperfusion purposes. Upon extracorporeal treatment, a patient's blood flows through the fibers in the polymyxin-B immobilized fiber PMX-20R cartridge and the circulating endotoxins from the blood are selectively adsorbed by PMX, which has positively charged amino groups that bind to the negatively charged site in the lipid A portion of the lipopolysaccharide (LPS) layer of the bacterial cell membrane. This removes endotoxins from the blood and, upon administration of the blood back into the patient, helps treat or reduce the incidence of endotoxemia and sepsis.

Synonym:PMX cartridge
US brand name:Toraymyxin
Code name:PMX-20R