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

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CHAPTER 10Testing for Reproductive Toxicity*Robert M. ParkerCONTENTSI. Introduction ........................................................................................................................428A. Brief Overview of DART Study Guidelines.............................................................4281. Fertility Studies....................................................................................................4292. Developmental Toxicity Studies..........................................................................4303. Reproduction Studies...........................................................................................4304. Reproductive Assessment by Continuous Breeding ...........................................4315. Developmental Neurotoxicity Study ...................................................................4326. Combined Repeated Dose Toxicity Study with the Reproduction andDevelopmental Toxicity Screening Test..............................................................4337. Dominant Lethal Study .......................................................................................435B. Endpoints for Reproductive Studies..........................................................................4361. Couple-Mediated Endpoints ................................................................................4362. Male-Specific Endpoints and Paternally Mediated Effects ................................4363. Female-Specific Endpoints and Maternally Mediated Effects ...........................436II. Reproductive Performance.................................................................................................437A. Overview....................................................................................................................437B. Treatment Duration for Males in Fertility and Reproduction Studies .....................437C. Cohabitation and Evidence of Mating ......................................................................4381. Vaginal Plugs .......................................................................................................4382. Vaginal Smears ....................................................................................................438D. Reproductive Indices .................................................................................................4391. Male Mating and Fertility Index .........................................................................4392. Female Fertility Index .........................................................................................4403. Mean Gestational Length ....................................................................................4424. Litter Size ............................................................................................................4425. Live-Birth Index ..................................................................................................4436. Survival Index......................................................................................................4437. Sex Ratio..............................................................................................................444III. Male Reproductive Toxicology..........................................................................................444A. Biology.......................................................................................................................444B. Observations ..............................................................................................................445C. Male Body Weight and Food Consumption..............................................................445D. Male Necropsy...........................................................................................................445* The views expressed in this chapter are those of the author and do not necessarily reflect the views of <strong>Ho</strong>ffmann-LaRoche, Inc.425© 2006 by Taylor & Francis Group, LLC

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