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β-Lactam antibiotics are indicated for the prevention and treatment of bacterial infections caused by susceptible organisms. At first, β-lactam antibiotics were mainly active only against gram-positive bacteria, yet the recent development of broad-spectrum β-lactam antibiotics active against various gram-negative organisms has increased their usefulness.
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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.
Chloramphenicol is an antibiotic useful for the treatment of a number of bacterial infections. [5] This includes use as an eye ointment to treat conjunctivitis. [6] By mouth or by injection into a vein, it is used to treat meningitis, plague, cholera, and typhoid fever. [5]
Thiamphenicol (also known as thiophenicol and dextrosulphenidol) is an antibiotic. [1] It is the methyl-sulfonyl analogue of chloramphenicol and has a similar spectrum of activity, but is 2.5 to 5 times as potent.
Pleuromutilin belongs to the class of secondary metabolites known as terpenes, which are produced in fungi through the mevalonate pathway (MEP pathway). [10] Its synthetic bottleneck lays on the production of the precursor GGPP and the following formation of the tricyclic structure, which is catalyzed by Pl-cyc, a bifunctional diterpene synthase (DTS).
Glycopeptide antibiotics are a class of drugs of microbial origin that are composed of glycosylated cyclic or polycyclic nonribosomal peptides.Significant glycopeptide antibiotics include the anti-infective antibiotics vancomycin, teicoplanin, telavancin, ramoplanin, avoparcin and decaplanin, corbomycin, complestatin and the antitumor antibiotic bleomycin.
An antibiotic is a type of antimicrobial substance active against bacteria.It is the most important type of antibacterial agent for fighting bacterial infections, and antibiotic medications are widely used in the treatment and prevention of such infections.