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Strain-dependent effects of D2 dopaminergic and muscarinic-cholinergic agonists and antagonists on memory consolidation processes in mice. 1997

A Gasbarri, and A Sulli, and C Pacitti, and S Puglisi-Allegra, and S Cabib, and C Castellano, and I Introini-Collison, and J L McGaugh
Department of Science and Biomedical Technology, School of Medicine, University of L'Aquila, Italy. gasbarri@aquila.infn.it

The interaction between muscarinic-cholinergic and dopaminergic systems in the modulation of memory storage of Y-maze discrimination (YMD) task was examined in C57BL/6 and DBA/2 strains of mice. In C57BL/6 mice, post-training systemic (i.p.) administration of the D2-agonist quinpirole facilitated retention and the D2-antagonist (-)-sulpiride impaired retention. Opposite effects were observed in DBA/2 strain. The facilitating or impairing effects of quinpirole and (-)-sulpiride were blocked by simultaneous post-training administration of muscarinic-cholinergic agonists and antagonists. The memory enhancing effects of the cholinergic agonist oxotremorine were not blocked by simultaneous administration of sulpiride in C57BL/6 mice or quinpirole in DBA/2 mice. Furthermore, the memory impairing effects of the cholinergic antagonist atropine were not blocked by simultaneous administration of quinpirole in C57BL/6 mice or sulpiride in DBA/2 mice. These findings indicate that the effects of D2-receptor agonists and antagonists on retention of YMD task are strain-dependent and mediated through muscarinic-cholinergic mechanisms.

UI MeSH Term Description Entries
D007231 Infant, Newborn An infant during the first 28 days after birth. Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D008810 Mice, Inbred C57BL One of the first INBRED MOUSE STRAINS to be sequenced. This strain is commonly used as genetic background for transgenic mouse models. Refractory to many tumors, this strain is also preferred model for studying role of genetic variations in development of diseases. Mice, C57BL,Mouse, C57BL,Mouse, Inbred C57BL,C57BL Mice,C57BL Mice, Inbred,C57BL Mouse,C57BL Mouse, Inbred,Inbred C57BL Mice,Inbred C57BL Mouse
D008811 Mice, Inbred DBA An inbred strain of mouse. Specific substrains are used in a variety of areas of BIOMEDICAL RESEARCH such as DBA/1J, which is used as a model for RHEUMATOID ARTHRITIS. Mice, DBA,Mouse, DBA,Mouse, Inbred DBA,DBA Mice,DBA Mice, Inbred,DBA Mouse,DBA Mouse, Inbred,Inbred DBA Mice,Inbred DBA Mouse
D010095 Oxotremorine A non-hydrolyzed muscarinic agonist used as a research tool. Oxytremorine
D011939 Mental Recall The process whereby a representation of past experience is elicited. Recall, Mental
D011976 Receptors, Muscarinic One of the two major classes of cholinergic receptors. Muscarinic receptors were originally defined by their preference for MUSCARINE over NICOTINE. There are several subtypes (usually M1, M2, M3....) that are characterized by their cellular actions, pharmacology, and molecular biology. Muscarinic Acetylcholine Receptors,Muscarinic Receptors,Muscarinic Acetylcholine Receptor,Muscarinic Receptor,Acetylcholine Receptor, Muscarinic,Acetylcholine Receptors, Muscarinic,Receptor, Muscarinic,Receptor, Muscarinic Acetylcholine,Receptors, Muscarinic Acetylcholine
D012153 Retention, Psychology The persistence to perform a learned behavior (facts or experiences) after an interval has elapsed in which there has been no performance or practice of the behavior. Psychological Retention,Retention (Psychology),Psychology Retention,Retention, Psychological
D001921 Brain The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM. Encephalon
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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