Reductive dechlorination of chloramphenicol by rat liver microsomes. 1983

P L Morris, and T R Burke, and L R Phol

When chloramphenicol was incubated with rat liver microsomes anaerobically, it was metabolized predominantly to deschloro-chloramphenicol and products that become irreversibly bound to microsomal protein. Cytochromes P-450 induced by phenobarbital appeared to catalyze these reactions most effectively. Glutathione increased the formation of deschloro-chloramphenicol by 13% and decreased the amount of the irreversibly bound product by 18%, respectively. Only a small amount of the nitroaromatic-reduced product, chloramphenicol amine, was detected by high pressure liquid chromatography. These results are consistent with chloramphenicol being biotransformed and activated by cytochromes P-450 anaerobically through predominantly reductive dechlorination.

UI MeSH Term Description Entries
D008297 Male Males
D008862 Microsomes, Liver Closed vesicles of fragmented endoplasmic reticulum created when liver cells or tissue are disrupted by homogenization. They may be smooth or rough. Liver Microsomes,Liver Microsome,Microsome, Liver
D010084 Oxidation-Reduction A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471). Redox,Oxidation Reduction
D011919 Rats, Inbred Strains Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding. August Rats,Inbred Rat Strains,Inbred Strain of Rat,Inbred Strain of Rats,Inbred Strains of Rats,Rat, Inbred Strain,August Rat,Inbred Rat Strain,Inbred Strain Rat,Inbred Strain Rats,Inbred Strains Rat,Inbred Strains Rats,Rat Inbred Strain,Rat Inbred Strains,Rat Strain, Inbred,Rat Strains, Inbred,Rat, August,Rat, Inbred Strains,Rats Inbred Strain,Rats Inbred Strains,Rats, August,Rats, Inbred Strain,Strain Rat, Inbred,Strain Rats, Inbred,Strain, Inbred Rat,Strains, Inbred Rat
D002701 Chloramphenicol An antibiotic first isolated from cultures of Streptomyces venequelae in 1947 but now produced synthetically. It has a relatively simple structure and was the first broad-spectrum antibiotic to be discovered. It acts by interfering with bacterial protein synthesis and is mainly bacteriostatic. (From Martindale, The Extra Pharmacopoeia, 29th ed, p106) Cloranfenicol,Kloramfenikol,Levomycetin,Amphenicol,Amphenicols,Chlornitromycin,Chlorocid,Chloromycetin,Detreomycin,Ophthochlor,Syntomycin
D002713 Chlorine An element with atomic symbol Cl, atomic number 17, and atomic weight 35, and member of the halogen family. Chlorine Gas,Chlorine-35,Cl2 Gas,Chlorine 35,Gas, Chlorine,Gas, Cl2
D002851 Chromatography, High Pressure Liquid Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed. Chromatography, High Performance Liquid,Chromatography, High Speed Liquid,Chromatography, Liquid, High Pressure,HPLC,High Performance Liquid Chromatography,High-Performance Liquid Chromatography,UPLC,Ultra Performance Liquid Chromatography,Chromatography, High-Performance Liquid,High-Performance Liquid Chromatographies,Liquid Chromatography, High-Performance
D000332 Aerobiosis Life or metabolic reactions occurring in an environment containing oxygen. Aerobioses
D000693 Anaerobiosis The complete absence, or (loosely) the paucity, of gaseous or dissolved elemental oxygen in a given place or environment. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed) Anaerobic Metabolism,Anaerobic Metabolisms,Anaerobioses,Metabolism, Anaerobic,Metabolisms, Anaerobic
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia

Related Publications

P L Morris, and T R Burke, and L R Phol
October 1969, Life sciences,
P L Morris, and T R Burke, and L R Phol
January 1980, Drug metabolism and disposition: the biological fate of chemicals,
P L Morris, and T R Burke, and L R Phol
April 1972, Nature: New biology,
P L Morris, and T R Burke, and L R Phol
January 1980, Drug metabolism and disposition: the biological fate of chemicals,
P L Morris, and T R Burke, and L R Phol
June 1998, Biochemistry and molecular biology international,
P L Morris, and T R Burke, and L R Phol
October 1984, Chemico-biological interactions,
P L Morris, and T R Burke, and L R Phol
February 1978, Biochemical pharmacology,
P L Morris, and T R Burke, and L R Phol
July 1977, The Journal of biological chemistry,
P L Morris, and T R Burke, and L R Phol
August 1981, Biochemistry,
P L Morris, and T R Burke, and L R Phol
May 1985, British journal of industrial medicine,
Copied contents to your clipboard!