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Metabolism of 2- and 3-tert-butyl-4-hydroxyanisole in the rat (III): Metabolites in the urine and feces. 1988

M Hirose, and A Hagiwara, and K Inoue, and N Ito, and H Kaneko, and K Saito, and H Matsunaga, and N Isobe, and A Yoshitake, and J Miyamoto
First Department of Pathology, Nagoya City University Medical School, Japan.

The urinary and fecal metabolites of orally administered 2-tert-butyl-4-hydroxyanisole (2-BHA) and 3-tert-butyl-4-hydroxyanisole (3-BHA) in rats were identified. Samples of 2-day pooled urine and feces of rats given a single intragastric dose of 1 g/kg body wt of tert[butyl-14C]3-BHA (*Bu-3-BHA). tert[butyl-14C]2-BHA (*Bu-2-BHA), [methyl-14C]3-BHA (*Me-3-BHA) or [methyl-14C]-2-BHA (*Me-2-BHA) were analyzed by comparing thin-layer chromatography (TLC) retentions with authentic standards. Conjugated metabolites were identified after enzymatic hydrolysis. Proton magnetic resonance spectroscopy and electron impact mass spectrometry were used for confirmation of the authentic standards. In rats given 3-BHA, a major metabolite in the urine was 3-BHA-glucuronide with a smaller amount of tert-butylhydroquinone (TBHQ)-sulfate, while unchanged 3-BHA and 3-BHA-glucuronide were detected in the feces. In rats given 2-BHA, the main metabolites were the sulfate conjugates of 2-BHA, 4-tert-butyl-5-methoxy-1,2-benzoquinone (2-TBOQ) and the glucuronide of 2-BHA in the urine, while unchanged 2-BHA was found in the feces.

UI MeSH Term Description Entries
D008297 Male Males
D011916 Rats, Inbred F344 An inbred strain of rat that is used for general BIOMEDICAL RESEARCH purposes. Fischer Rats,Rats, Inbred CDF,Rats, Inbred Fischer 344,Rats, F344,Rats, Inbred Fisher 344,CDF Rat, Inbred,CDF Rats, Inbred,F344 Rat,F344 Rat, Inbred,F344 Rats,F344 Rats, Inbred,Inbred CDF Rat,Inbred CDF Rats,Inbred F344 Rat,Inbred F344 Rats,Rat, F344,Rat, Inbred CDF,Rat, Inbred F344,Rats, Fischer
D002083 Butylated Hydroxyanisole Mixture of 2- and 3-tert-butyl-4-methoxyphenols that is used as an antioxidant in foods, cosmetics, and pharmaceuticals. Butylhydroxyanisole,(1,1-Dimethylethyl)-4-methoxyphenol,AMIF-72,BHA,Butyl Methoxyphenol,Embanox,Nipantiox 1-F,Tenox BHA,AMIF 72,AMIF72,Hydroxyanisole, Butylated,Methoxyphenol, Butyl,Nipantiox 1 F,Nipantiox 1F
D002855 Chromatography, Thin Layer Chromatography on thin layers of adsorbents rather than in columns. The adsorbent can be alumina, silica gel, silicates, charcoals, or cellulose. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Chromatography, Thin-Layer,Thin Layer Chromatography,Chromatographies, Thin Layer,Chromatographies, Thin-Layer,Thin Layer Chromatographies,Thin-Layer Chromatographies,Thin-Layer Chromatography
D005243 Feces Excrement from the INTESTINES, containing unabsorbed solids, waste products, secretions, and BACTERIA of the DIGESTIVE SYSTEM.
D000284 Administration, Oral The giving of drugs, chemicals, or other substances by mouth. Drug Administration, Oral,Administration, Oral Drug,Oral Administration,Oral Drug Administration,Administrations, Oral,Administrations, Oral Drug,Drug Administrations, Oral,Oral Administrations,Oral Drug Administrations
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
D001345 Autoradiography The making of a radiograph of an object or tissue by recording on a photographic plate the radiation emitted by radioactive material within the object. (Dorland, 27th ed) Radioautography
D001711 Biotransformation The chemical alteration of an exogenous substance by or in a biological system. The alteration may inactivate the compound or it may result in the production of an active metabolite of an inactive parent compound. The alterations may be divided into METABOLIC DETOXICATION, PHASE I and METABOLIC DETOXICATION, PHASE II.
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor

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