2007
DOI: 10.1289/ehp.9666
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The OECD Program to Validate the Rat Hershberger Bioassay to Screen Compounds for in Vivo Androgen and Antiandrogen Responses: Phase 2 Dose–Response Studies

Abstract: ObjectiveThe Organisation for Economic Co-operation and Development (OECD) has completed phase 2 of an international program to validate the rodent Hershberger bioassay.DesignThe Hershberger bioassay is designed to identify suspected androgens and antiandrogens based on changes in the weights of five androgen-responsive tissues (ventral prostate, paired seminal vesicles and coagulating glands, the levator ani and bulbocavernosus muscles, the glans penis, and paired Cowper’s or bulbourethral glands). Protocol s… Show more

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Cited by 44 publications
(34 citation statements)
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“…These pesticides, or their metabolites, competitively inhibit the binding of androgens to AR, which leads to inhibition of androgen-dependent gene expression in vitro and in vivo (Kelce and Wilson 1997). Vinclozolin and procymidone both act as AR antagonists in the Hershberger assay (castrated-immature androgen-and pesticide-treated male rats), an effect replicated in several laboratories (Ashby et al 2004;Charles et al 2005;Kang et al 2004;Kennel et al 2004;Owens et al 2007;Shin et al 2007;Yamasaki et al 2003).…”
Section: Modes Of Action Of the Individual Chemicals Used In Our Mixtmentioning
confidence: 93%
“…These pesticides, or their metabolites, competitively inhibit the binding of androgens to AR, which leads to inhibition of androgen-dependent gene expression in vitro and in vivo (Kelce and Wilson 1997). Vinclozolin and procymidone both act as AR antagonists in the Hershberger assay (castrated-immature androgen-and pesticide-treated male rats), an effect replicated in several laboratories (Ashby et al 2004;Charles et al 2005;Kang et al 2004;Kennel et al 2004;Owens et al 2007;Shin et al 2007;Yamasaki et al 2003).…”
Section: Modes Of Action Of the Individual Chemicals Used In Our Mixtmentioning
confidence: 93%
“…Further characterization was based on extensive batteries of in vivo reproductive tract and secondary sex character examinations in the laboratory rat. In these studies, androgen action in utero, or on pubertal development were examined Owens et al 2007). Recognized antiandrogens fell into classes including dicarboximide (Gray et al 1994;Kelce & Wilson 1997) and imidazole fungicides (Vinggaard et al 2002;Noriega et al 2005), organochlorine insecticides (Kelce et al 1995), urea-based herbicides (Gray et al 1999;Lambright et al 2000), phthalate esters used as plasticizers (Parks et al 2000;Howdeshell et al 2007), and polybrominated diphenyl ethers (PBDEs) used as flame retardants (Stoker et al 2005).…”
Section: The "Endocrine Disruptor" Hypothesismentioning
confidence: 99%
“…Par conséquent, il est important que les modes opératoires de dissection standard utilisés pour les tissus sexuels accessoires soient bien maîtrisés par les personnes chargées cette tâche. Un manuel de Modes opératoires normalisés pour la dissection est disponible auprès de l'OCDE (21). Une formation poussée basée sur le guide de modes opératoires normalisés limitera une source de variation potentielle dans l'étude.…”
Section: Les Cinq Tissus Dépendant Des Androgènes (Pv Vs Eabc Cowunclassified
“…La description de la dissection des tissus est basée sur un guide de dissection détaillé qui contient des photographies et est publié sous forme de supplément intégré au programme de validation (21). La page web de la Food and Drug Administration coréenne propose également une vidéo présentant la dissection (22).…”
Section: Les Cinq Tissus Dépendant Des Androgènes (Pv Vs Eabc Cowunclassified
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