title: The role of intestinal bacteria in the transformation of sodium picosulfate.
abstract: Sodium picosulfate, a laxative, was biotransformed to 4,4'-dihydroxydiphenyl-(2 pyridyl)-methane by intestinal flora that produced a novel sulfotransferase (not sulfatase). The biotransformation was activated by adding phenolic compounds such as phenol, acetaminophen and flavonoids. The enzyme activity related to this biotransformation was the highest in the contents of the caecum region of the intestine. The enzyme activity was 3.0 mumole/hr/g wet feces in humans and 0.75 in rats (pH 8.0). The optimal pH was 9.0.
authors.affiliation: Department of Microbiology, College of Pharmacy, Kyung-Hee University, Seoul, Korea.
authors.forename: D H
authors.initials: DH
authors.lastname: Kim
authors.forename: S H
authors.initials: SH
authors.lastname: Hyun
authors.forename: S B
authors.initials: SB
authors.lastname: Shim
authors.forename: K
authors.initials: K
authors.lastname: Kobashi
mesh_terms: D000082:Acetaminophen / Q000494:pharmacology; D000818:Animals; D001711:Biotransformation; D001726:Bisacodyl / Q000031:analogs & derivatives* / Q000493:pharmacokinetics; D043182:Carboxylesterase; D002265:Carboxylic Ester Hydrolases / Q000378:metabolism; D002400:Cathartics / Q000493:pharmacokinetics*; D002951:Citrates; D005051:Eubacterium / Q000201:enzymology; D005243:Feces / Q000737:chemistry; D005419:Flavonoids / Q000494:pharmacology; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007422:Intestines / Q000201:enzymology / Q000382:microbiology*; D008297:Male; D009942:Organometallic Compounds; D010636:Phenols / Q000378:metabolism / Q000494:pharmacology; D010847:Picolines / Q000493:pharmacokinetics*; D051381:Rats; D011919:Rats, Inbred Strains; D013429:Sulfatases / Q000378:metabolism; D015238:Sulfotransferases / Q000378:metabolism*
chemical_list: D002400:Cathartics; D002951:Citrates; D005419:Flavonoids; D009942:Organometallic Compounds; D010636:Phenols; D010847:Picolines; D001726:Bisacodyl; D000082:Acetaminophen; D015238:Sulfotransferases; D002265:Carboxylic Ester Hydrolases; D043182:Carboxylesterase; D013429:Sulfatases; C005701:picosulfate sodium; C001659:dihydroxydiphenyl-pyridyl methane