Nitric oxide synthase inhibitor L-NAME prevents amphetamine-induced prodynorphin gene expression in the rat. 1996

B Przewłocka, and J Turchan, and H Machelska, and D Labuz, and W Lasoń
Department of Molecular Neuropharmacology, Polish Academy of Sciences, Kraków, Poland.

1. The effect of nitric oxide synthase inhibitor on amphetamine-induced behavioral changes and prodynorphin gene expression in the nucleus accumbens and striatum of the rat has been studied. 2. L-NAME attenuated behavioral stereotypic activity evoked by amphetamine administration. 3. Acute amphetamine administration (5mg/kg i.p.) increased the prodynorphin mRNA level in the nucleus accumbens and striatum after 3 hr. 4. A nitric oxide synthase inhibitor L-nitro-arginine methyl ester (L-NAME, 10, 50 mg/kg i.p.) had no effect on the level of prodynorphin mRNA, but prevented dose-dependently the amphetamine-induced increase in prodynorphin gene expression in both the nucleus accumbens and the striatum. 5. These data indicate that inhibition of the nitric oxide pathway attenuates biochemical and behavioral effects of amphetamine.

UI MeSH Term Description Entries
D008297 Male Males
D011498 Protein Precursors Precursors, Protein
D001923 Brain Chemistry Changes in the amounts of various chemicals (neurotransmitters, receptors, enzymes, and other metabolites) specific to the area of the central nervous system contained within the head. These are monitored over time, during sensory stimulation, or under different disease states. Chemistry, Brain,Brain Chemistries,Chemistries, Brain
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
D004745 Enkephalins One of the three major families of endogenous opioid peptides. The enkephalins are pentapeptides that are widespread in the central and peripheral nervous systems and in the adrenal medulla. Enkephalin
D004791 Enzyme Inhibitors Compounds or agents that combine with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction. Enzyme Inhibitor,Inhibitor, Enzyme,Inhibitors, Enzyme
D005786 Gene Expression Regulation Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control (induction or repression) of gene action at the level of transcription or translation. Gene Action Regulation,Regulation of Gene Expression,Expression Regulation, Gene,Regulation, Gene Action,Regulation, Gene Expression
D000661 Amphetamine A powerful central nervous system stimulant and sympathomimetic. Amphetamine has multiple mechanisms of action including blocking uptake of adrenergics and dopamine, stimulation of release of monamines, and inhibiting monoamine oxidase. Amphetamine is also a drug of abuse and a psychotomimetic. The l- and the d,l-forms are included here. The l-form has less central nervous system activity but stronger cardiovascular effects. The d-form is DEXTROAMPHETAMINE. Desoxynorephedrin,Levoamphetamine,Phenopromin,l-Amphetamine,Amfetamine,Amphetamine Sulfate,Amphetamine Sulfate (2:1),Centramina,Fenamine,Mydrial,Phenamine,Thyramine,levo-Amphetamine,Sulfate, Amphetamine,l Amphetamine,levo Amphetamine
D000697 Central Nervous System Stimulants A loosely defined group of drugs that tend to increase behavioral alertness, agitation, or excitation. They work by a variety of mechanisms, but usually not by direct excitation of neurons. The many drugs that have such actions as side effects to their main therapeutic use are not included here. Analeptic,Analeptic Agent,Analeptic Drug,Analeptics,CNS Stimulant,CNS Stimulants,Central Nervous System Stimulant,Central Stimulant,Analeptic Agents,Analeptic Drugs,Central Stimulants,Agent, Analeptic,Agents, Analeptic,Drug, Analeptic,Drugs, Analeptic,Stimulant, CNS,Stimulant, Central,Stimulants, CNS,Stimulants, Central
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia

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