PMID- 12524182 OWN - NLM STAT- MEDLINE DCOM- 20030327 LR - 20190901 IS - 0165-3806 (Print) IS - 0165-3806 (Linking) VI - 140 IP - 1 DP - 2003 Jan 10 TI - Alterations in PKCgamma in the mouse hippocampus after prenatal exposure to heroin: a link from cell signaling to behavioral outcome. PG - 117-25 AB - Administration of heroin to pregnant mice evokes neurochemical and behavioral deficits consequent to disruption of septohippocampal cholinergic innervation, notably involving desensitization of the ability of cholinergic receptors to activate PKC activity. The present study further evaluates whether desensitization occurs specifically for the PKCgamma isoform, the behaviorally relevant subtype, as compared to PKCalpha. Mice were exposed transplacentally to heroin on gestational days (GD) 9-18 via s.c. maternal injections (10 mg/kg per day). In young adulthood (50 days old), control offspring showed an increase in hippocampal cell membrane PKCgamma after incubation with the muscarinic cholinergic receptor agonist, carbachol, indicative of translocation from the cytosol. Prenatal exposure to heroin eliminated this response, whereas basal PKCgamma levels were unchanged. In contrast, PKCalpha, which is not related to heroin-induced behavioral deficits, did not show a loss of response. The present findings strongly point to abnormalities in the responsiveness of PKCgamma as a mechanism underlying the neurobehavioral teratogenicity of heroin. FAU - Shahak, Halit AU - Shahak H AD - The Ross Laboratory for Studies in Neural Birth Defects, Department of Anatomy and Cell Biology, The Hebrew University-Hadassah Medical School, P.O. Box 12272, 91120 Jerusalem, Israel. FAU - Slotkin, Theodore A AU - Slotkin TA FAU - Yanai, Joseph AU - Yanai J LA - eng GR - HD 40820/HD/NICHD NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - Netherlands TA - Brain Res Dev Brain Res JT - Brain research. Developmental brain research JID - 8908639 RN - 70D95007SX (Heroin) RN - 8Y164V895Y (Carbachol) RN - EC 2.7.1.- (protein kinase C gamma) RN - EC 2.7.11.13 (Protein Kinase C) SB - IM MH - Animals MH - Behavior, Animal/drug effects/*physiology MH - Body Weight/drug effects MH - Carbachol/pharmacology MH - Cell Membrane/enzymology MH - Enzyme Activation MH - Feeding Behavior/drug effects MH - Female MH - Heroin/*pharmacology MH - Hippocampus/drug effects/*enzymology MH - Maternal Behavior MH - Mice MH - Models, Animal MH - Posture MH - Pregnancy MH - *Prenatal Exposure Delayed Effects MH - Protein Kinase C/*metabolism MH - Reflex/drug effects/physiology MH - Reflex, Startle/drug effects MH - Signal Transduction/drug effects/physiology EDAT- 2003/01/14 04:00 MHDA- 2003/03/28 05:00 CRDT- 2003/01/14 04:00 PHST- 2003/01/14 04:00 [pubmed] PHST- 2003/03/28 05:00 [medline] PHST- 2003/01/14 04:00 [entrez] AID - S0165380602006077 [pii] AID - 10.1016/s0165-3806(02)00607-7 [doi] PST - ppublish SO - Brain Res Dev Brain Res. 2003 Jan 10;140(1):117-25. doi: 10.1016/s0165-3806(02)00607-7.