title: Effects of Preconceptional Ethanol Consumption on ADHD-Like Symptoms in Sprague-Dawley Rat Offsprings.
abstract: Ethanol exposure during gestational period is related to growth retardation, morphological abnormality, and even in neurological abnormalities including attention deficit/hyperactivity disorder (ADHD)-like behaviors on offspring. However, relatively little is known about the effects of maternal ethanol consumption prior to conception on their offspring. In this study, we investi-gated whether maternal ethanol administration during preconceptional phase produces ADHD-like behaviors in the rat offspring. Sprague-Dawley (SD) female rats were administrated ethanol via intragastric intubation with dosing regimen of 6 g/kg daily for 10 consecutive days and treated female rats then mated with non-treated male SD rats after 8 weeks. Another group subjected to the same procedure as those conducted on ethanol treated group except the saline administration instead of ethanol. Offspring was tested for their ADHD-like behaviors using open field test, Y maze test and impulsivity test that is performed in the aversive electronic foot shock paradigm. Offspring of preconceptional ethanol treated (EtOH) group showed hyperlocomotive activity, attention deficit and impulsivity. And reduction of striatal dopamine transporter (DAT) level was observed by Western blot in the EtOH group, compared to control (Con) group, while the immunohistochemical analysis exhibited increased expression of norepinephrine transporter (NET) in the frontal cortex. These results suggest that maternal ethanol consumption in the preconceptional phase induces ADHD-like behaviors in offspring that might be related to the abnormal expression of DAT and NET in rat.
authors.affiliation: Center for Neuroscience Research, SMART IBST and Department of Pharmacology, School of Medicine, Konkuk University, Seoul 143-701.
authors.forename: Inah
authors.initials: I
authors.lastname: Choi
authors.forename: Pitna
authors.initials: P
authors.lastname: Kim
authors.forename: So Hyun
authors.initials: SH
authors.lastname: Joo
authors.forename: Min Kyeong
authors.initials: MK
authors.lastname: Kim
authors.forename: Jin Hee
authors.initials: JH
authors.lastname: Park
authors.forename: Hee Jin
authors.initials: HJ
authors.lastname: Kim
authors.forename: Jong Hoon
authors.initials: JH
authors.lastname: Ryu
authors.forename: Jae Hoon
authors.initials: JH
authors.lastname: Cheong
authors.forename: Chan Young
authors.initials: CY
authors.lastname: Shin
keywords: ADHD; Dopamine transporter; Norepinephrine transporter; Preconceptional ethanol consumption