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A Practical Approach, Second Edition=Ronald D. Ho.pdf

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CHAPTER 12Role of Xenobiotic Metabolism in Developmentaland Reproductive ToxicityArun P. KulkarniCONTENTSI. Introduction ........................................................................................................................527II. Overview of Xenobiotic Metabolism ................................................................................527A. Phase I Reactions.......................................................................................................5281. Cytochrome P450 ................................................................................................5282. Flavin-Containing Monooxygenase.....................................................................5293. Peroxidases and Prostaglandin Synthase ............................................................5294. Lipoxygenase .......................................................................................................5295. Lipid Peroxidation ...............................................................................................530B. Phase II Reactions .....................................................................................................5301. UDP-Glucuronosyl Transferase...........................................................................5302. Sulfotransferase....................................................................................................5313. Glutathione Transferase.......................................................................................531III. Assay of Xenobiotic Metabolizing Enzymes ....................................................................531A. General Comments ....................................................................................................531B. Assay Methods ..........................................................................................................5321. Cytochrome P450 Estimation..............................................................................5322. Cytochrome P450–Mediated Xenobiotic Oxidation...........................................5323. Flavin-Containing Monooxygenase.....................................................................5334. Lipoxygenase .......................................................................................................5335. Prostaglandin Synthase........................................................................................5346. Peroxidase............................................................................................................5357. Epoxide Hydrase..................................................................................................5368. Glutathione Transferase.......................................................................................5369. UDP-Glucuronosyl Transferase...........................................................................53710. Sulfotransferase....................................................................................................537IV. Metabolism of Developmental Toxicants ..........................................................................538A. Maternal Liver ...........................................................................................................5381. Cytochrome P450 ................................................................................................5382. Flavin-Containing Monooxygenase.....................................................................5403. Epoxide Hydrase..................................................................................................540525© 2006 by Taylor & Francis Group, LLC

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