title: Effect of non-selective dopaminergic receptor agonist on disrupted maternal behavior in olfactory bulbectomized mice.
abstract: Olfactory bulbectomy (OBX) animals are considered a putative model of depression that produces behavioral, physiological, and neurochemical alterations resembling clinical depression. Depression is a critical cause of child abuse and neglect, and it has been reported that maternal behavior involves dopaminergic neurons of the mesolimbic pathway. In this study, we investigated the effect of apomorphine, a non-selective dopaminergic receptor agonist, on maternal behavior to examine the influence of activated brain dopaminergic function in OBX mice. In addition, we conducted the sucrose preference test to examine the reward system which has a critical relationship to mesolimbic dopaminergic function and maternal behavior. Maternal behavior was observed on postnatal day (PND) 0 and 4. OBX female mice showed a reduction in sucrose preference 2 weeks post surgery. OBX dams showed maternal behavior deficits on PND 0, and these deficits were ameliorated by administration of apomorphine. These results suggest that maternal behavior deficits in OBX dams may involve brain hypodopaminergic function in the central nervous system induced by OBX.
authors.affiliation: Department of Pharmacology, Tohoku Pharmaceutical University, Aoba-ku, Sendai, Japan. obx0315@yahoo.co.jp
authors.forename: Atsushi
authors.initials: A
authors.lastname: Sato
authors.forename: Osamu
authors.initials: O
authors.lastname: Nakagawasai
authors.forename: Koichi
authors.initials: K
authors.lastname: Tan-No
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Onogi
authors.forename: Fukie
authors.initials: F
authors.lastname: Niijima
authors.forename: Takeshi
authors.initials: T
authors.lastname: Tadano
mesh_terms: D000367:Age Factors; D000704:Analysis of Variance; D000818:Animals; D000831:Animals, Newborn; D001058:Apomorphine / Q000494:pharmacology*; D003863:Depression / Q000188:drug therapy / Q000503:physiopathology; D004195:Disease Models, Animal; D018491:Dopamine Agonists / Q000494:pharmacology*; D005106:Exploratory Behavior / Q000187:drug effects; D005260:Female; D005518:Food Preferences / Q000187:drug effects; D008425:Maternal Behavior / Q000187:drug effects*; D051379:Mice; D009830:Olfactory Bulb / Q000502:physiology* / Q000601:surgery; D012726:Sexual Behavior, Animal / Q000187:drug effects; D013395:Sucrose / Q000008:administration & dosage; D013549:Sweetening Agents / Q000008:administration & dosage
chemical_list: D018491:Dopamine Agonists; D013549:Sweetening Agents; D013395:Sucrose; D001058:Apomorphine