Mezlocillin

(CC) Image: David E. Volk
Mezlocillin

Mezlocillin is a penicillin-like, beta-lactam antibiotic agent, used to treat serious gram–negative infections of the lungs, urinary tract, and skin. Mezlocillin use has been discontinued in the United States. Bacteria susceptible to mezlocillin include Bacteriodes species (including B. fragilis), E. coli, Enterobacter species, H. influenzae, Klebsiella species, Morganella morganii, Pseudomonas species, Proteus mirabilis, Streptococcus faecelis, Peptococcus species, Peptostreptococcus species, , Serratia species, N. gonorrhoeae, P. vulgaris, and Providencia rettgeri.[1]

Mechanism of action

Mezlocillin works by binding to penicillin-binding proteins (PBPs) located inside the bacterial cell wall, thereby inhibiting the last stage of bacterial cell wall synthesis, which in turn leads to autolysis of the cells by autolytic enzymes (autolysins).

Chemistry

This drug is a beta-lactam based drug, similar to all of the penicillin-like drugs. Its IUPAC chemical name is (2S,5R,6R)-3,3-dimethyl-6-[[(2R)-2-[(3-methylsulfonyl-2-oxoimidazolidine-1-carbonyl) amino]-2-phenylacetyl]amino]-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid and its chemical formula is C₂₁H₂₅N₅O₈S₂ (MW=539.5819 g/mol).

External links

• Mezlocillin - FDA approved drug information (drug label) from DailyMed (U.S. National Library of Medicine).
• Drug Bank [2]