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Cefalexin. Cefalexin, also spelled cephalexin, is an antibiotic that can treat a number of bacterial infections. [4] It kills gram-positive and some gram-negative bacteria by disrupting the growth of the bacterial cell wall. [4] Cefalexin is a β-lactam antibiotic within the class of first-generation cephalosporins. [4]
Cephalosporins are bactericidal and, like other β-lactam antibiotics, disrupt the synthesis of the peptidoglycan layer forming the bacterial cell wall. The peptidoglycan layer is important for cell wall structural integrity. The final transpeptidation step in the synthesis of the peptidoglycan is facilitated by penicillin-binding proteins (PBPs).
Two structural features of β-lactam antibiotics have been correlated with their antibiotic potency. [16] The first is known as "Woodward's parameter", h , and is the height (in angstroms ) of the pyramid formed by the nitrogen atom of the β-lactam as the apex and the three adjacent carbon atoms as the base. [ 17 ]
Contents. Discovery and development of cephalosporins. Cephalosporins are a broad class of bactericidal antibiotics that include the β-lactam ring and share a structural similarity and mechanism of action with other β-lactam antibiotics (e.g. penicillins, carbapenems and monobactams). [ 1 ] The cephalosporins (and other β-lactams) have the ...
During the 1970s and 1980s, Eli Lilly and Company underwent a flurry of drug production, including Keflex, an antibiotic, in 1971, Dobutrex, a cardiogenic shock heart drug in 1977, Ceclore, which ultimately became the world's top selling oral antibiotic, in 1979, Eldisine, a leukemia drug, Oraflex, an arthritis drug, and Darvon, an opioid drug ...
Penicillins (P, PCN or PEN) are a group of β-lactam antibiotics originally obtained from Penicillium moulds, principally P. chrysogenum and P. rubens. Most penicillins in clinical use are synthesised by P. chrysogenum using deep tank fermentation [ 2 ] and then purified. [ 3 ][ 4 ] A number of natural penicillins have been discovered, but only ...
In Wikidata. Quinolone antibiotics constitute a large group of broad-spectrum bacteriocidals that share a bicyclic core structure related to the substance 4-quinolone. [ 1 ] They are used in human and veterinary medicine to treat bacterial infections, as well as in animal husbandry, specifically poultry production.
Cefadroxil is a first-generation cephalosporin antibacterial drug that is the para-hydroxy derivative of cephalexin, and is used similarly in the treatment of mild to moderate susceptible infections such as the bacterium Streptococcus pyogenes, causing the disease popularly called strep throat or streptococcal tonsillitis, urinary tract infection, reproductive tract infection, and skin infections.