title: Evaluation of developmental neurotoxicity of polysorbate 80 in rats.
abstract: The developmental neurotoxicity of polysorbate 80 (PS80) was evaluated in rats. Crl:CD(SD) rats were given drinking water containing PS80 at 0, 0.018, 0.13, 1.0, or 7.5% (0, 0.035, 0.245, 1.864, or 16.783ml/kgbw/day) on day 0 of pregnancy through day 21 after delivery. Pregnant rats were allowed to deliver spontaneously. Potential adverse effects of pre- and post-natal exposure on the development and function of the nervous system in offspring of rats given PS80 were examined. Maternal body weight was lowered at 7.5%. Number of pups born was lowered at 7.5%. There were no compound-related effects on locomotor activity of offspring on postnatal days (PNDs) 14-15, 17-18, 20-21 and 33-37. No compound-related changes were found in developmental landmarks, sexual maturation, or reflex responses. Although decreased rate of avoidance responses was noted on PNDs 23-27 in male and female offspring at 7.5%, no compound-related changes were found in performance in the conditioned avoidance response on PNDs 60-67. Histopathological examinations of the brain revealed no toxicological changes. Lowered body weight was observed in male and female offspring at 7.5%. The NOAEL in this study was considered to be 1.0% (1.864ml/mg/kgbw/day).
authors.affiliation: Division of Risk Assessment, Biological Safety Research Center, National Institute of Health Sciences, Tokyo, Japan. ema@nihs.go.jp
authors.forename: Makoto
authors.initials: M
authors.lastname: Ema
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Hara
authors.forename: Mariko
authors.initials: M
authors.lastname: Matsumoto
authors.forename: Mutsuko
authors.initials: M
authors.lastname: Hirata-Koizumi
authors.forename: Akihiko
authors.initials: A
authors.lastname: Hirose
authors.forename: Eiichi
authors.initials: E
authors.lastname: Kamata
mesh_terms: D000818:Animals; D001362:Avoidance Learning / Q000187:drug effects; D001522:Behavior, Animal / Q000187:drug effects; D001835:Body Weight / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D005260:Female; D005865:Gestational Age; D007774:Lactation; D008297:Male; D009043:Motor Activity / Q000187:drug effects; D009420:Nervous System / Q000187:drug effects* / Q000196:embryology / Q000254:growth & development / Q000473:pathology; D019055:No-Observed-Adverse-Effect Level; D011136:Polysorbates / Q000633:toxicity*; D011247:Pregnancy; D011297:Prenatal Exposure Delayed Effects; D051381:Rats; D017207:Rats, Sprague-Dawley; D012018:Reflex / Q000187:drug effects; D012098:Reproduction / Q000187:drug effects; D012741:Sexual Maturation / Q000187:drug effects; D013501:Surface-Active Agents / Q000633:toxicity*; D018675:Toxicity Tests
chemical_list: D011136:Polysorbates; D013501:Surface-Active Agents