title: Effects of prenatal exposure to sodium arsenite on motor and food-motivated behaviors from birth to adulthood in C57BL6/J mice.
abstract: Consumption of arsenic-contaminated drinking water is associated with numerous cancers and dermal and vascular diseases. Arsenic is also a potent nervous system toxicant and epidemiological studies indicate that intellectual functions in children are compromised following early developmental exposure. This study was designed to examine the effects of arsenic on a broad range of age-specific behaviors including basic sensory-motor responses in neonates, locomotor activity and grip strength in juveniles, and operant measures of learning and attention in adults. Pregnant C57BL6/J mice consumed drinking water containing 0, 8, 25, or 80 ppm sodium arsenite from the fourth day of gestation until birth. Arsenic produced a range of behavioral impairments in male and female offspring at each of the test ages. The most striking effects of arsenic were on the development of gait and other motor responses including acoustic startle, righting reflexes, and forelimb grip. These results suggest that developmental arsenic exposure can produce other behavioral impairments in children in addition to cognitive impairment.
authors.affiliation: Maine Center for Toxicology and Environmental Health, University of Southern Maine, Portland, Maine 04104, United States. markowski@geneseo.edu
authors.forename: Vincent P
authors.initials: VP
authors.lastname: Markowski
authors.forename: Elizabeth A
authors.initials: EA
authors.lastname: Reeve
authors.forename: Kristen
authors.initials: K
authors.lastname: Onos
authors.forename: Mina
authors.initials: M
authors.lastname: Assadollahzadeh
authors.forename: Naomi
authors.initials: N
authors.lastname: McKay
mesh_terms: D000818:Animals; D018053:Arsenites / Q000633:toxicity*; D001522:Behavior, Animal / Q000187:drug effects; D001835:Body Weight / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D060766:Drinking Water / Q000008:administration & dosage; D005260:Female; D048788:Growth and Development / Q000187:drug effects*; D008098:Litter Size / Q000187:drug effects; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D009043:Motor Activity / Q000187:drug effects*; D011247:Pregnancy; D011297:Prenatal Exposure Delayed Effects; D017670:Sodium Compounds / Q000633:toxicity*; D014874:Water Pollutants, Chemical / Q000633:toxicity*
chemical_list: D018053:Arsenites; D060766:Drinking Water; D017670:Sodium Compounds; D014874:Water Pollutants, Chemical; C017947:sodium arsenite