Browse Items · NEOMED Bibliography Database

The effect of GDNF on nigrostriatal dopaminergic function in response to a two-pulse K(+) stimulation.

We examined the effect of glial cell line-derived neurotrophic factor (GDNF) upon nigrostriatal dopaminergic function in response to two-pulse potassium (K(+)) stimulation in rats under in vivo microdialysis conditions. The two-pulse infusion…

Formulation and photoirradiation parameters that influenced photoresponsive drug delivery using alkoxylphenacyl-based polycarbonates.

Recently, we reported the synthesis and biocompatibility of alkoxylphenacyl-based polycarbonates (APP); a promising new class of polymers that undergo photo-induced chain scission. In the current study, nanoparticles (NPs) were prepared from the APP…

Antitumor efficacy and tolerability of systemically administered gallium acetylacetonate-loaded gelucire-stabilized nanoparticles.

The widespread clinical success with most gallium compounds in cancer therapy is markedly hampered by lack of tumor specific accumulation, poor tumor permeability and undesirable toxicity to healthy tissues. The aim of this work was to investigate…

High-Dose Flu Vaccine has Increased Immunogenicity in HIV Patients.

Tags: 2013, Department of Internal Medicine, Dose-Response Relationship, Double-Blind Studies, Human, Human Immunodeficiency Virus, Infectious Disease Alert, Influenza Vaccine, NEOMED College of Medicine, Ohio, RANDOMIZED controlled trials, Watkins Richard R

Efficacy of Higher-dose Oseltamivir in Adults with Influenza A and B.

Tags: 2014, Department of Internal Medicine, Dose-Response Relationship, Infectious Disease Alert, Influenza – Drug Therapy, Influenza A Virus, Influenza B Virus, Multicenter Studies, NEOMED College of Medicine, Oseltamivir – Adverse Effects, Oseltamivir – Therapeutic Use, Prospective Studies, Treatment Outcomes, Watkins Richard R

Steroids Increase the Risk for Community-acquired Staphylococcus aureus Bacteremia...Smit J, Kaasch AJ, Sogaard M , t al. Use of glucocorticoids and risk of community-acquired Staphylococcus aureus bacteremia:A population-based case-control study. Mayo Clin Proc 2016 :91:873-880.

The article discusses case-control study revealing an increased risk for developing community-acquired Staphylococcus aureus bacteremia (SAB) with the use of systemic glucocorticoids. Topics discussed include data collected from a population-based…

Tags: 2016, Bacteremia – Risk Factors, Community-Acquired Infections – Risk Factors, Denmark, Department of Internal Medicine, Dose-Response Relationship, Drug, Glucocorticoids – Adverse Effects, Infectious Disease Alert, NEOMED College of Medicine, Staphylococcal Infections – Risk Factors, Staphylococcus aureus, Watkins Richard R

Antitumor activities of extracts from selected desert plants against HepG2 human hepatocellular carcinoma cells.

CONTEXT: Phytochemicals are produced by desert plants to protect themselves against stressful environments. They have been shown to be useful in preventing and fighting adverse pathophysiological conditions and complex diseases, including cancer.…

Selective Targeting of Heme Protein in Cytochrome P450 and Nitric Oxide Synthase by Diphenyleneiodonium.

Cytochrome P450 (CYP) enzymes mediate mixed-function oxidation reactions important in drug metabolism. The aromatic heterocyclic cation, diphenyleneiodonium (DPI), binds flavin in cytochrome P450 reductase and inhibits

Reexamining interstitial radiotherapy for PCa.

Tags: *Brachytherapy/adverse effects/instrumentation/methods/trends, *Radioisotopes/adverse effects, 1994, Contemporary urology, Dose-Response Relationship, Forecasting, Humans, Male, Prostatectomy, Prostatic Neoplasms/diagnostic imaging/*radiotherapy, Radiation, Summers J L, Treatment Outcome, Ultrasonography

Sexual dimorphism in vasopressin-induced contraction of rat aorta.

Previously, we reported that, in the rat, pressor responsiveness to vasopressin (VP) is higher in males than in females during most phases of the estrous cycle. To explore the role of the vasculature in this phenomenon, we examined vascular…

Tags: *Sex Characteristics, *Vasoconstriction, 1991, Animals, Aorta/*drug effects, Arginine Vasopressin/*pharmacology, Crofton J T, Dose-Response Relationship, Drug, Female, Male, Osmolar Concentration, Phenylephrine/pharmacology, Rats, Share L, Stallone J N, The American journal of physiology

Mesenteric vascular responses to vasopressin during development of DOCA-salt hypertension in male and female rats.

Deoxycorticosterone acetate (DOCA)-salt hypertension develops to a greater extent in male (M) than in female (F) rats. To determine the role of the vasculature, reactivity to arginine vasopressin (AVP) and prostanoid output were examined in the…

Acute and subchronic effects of methylenedioxymethamphetamine [(+/-)MDMA] on locomotion and serotonin syndrome behavior in the rat.

Specific behaviors comprising the serotonin syndrome (low body posture, forepaw treading, headweaving) and the autonomic signs of piloerection and salivation were determined and analyzed with locomotor activity in response to MDMA at three doses…

A comparative analysis of monoaminergic involvement in the spinal antinociceptive action of DAMPGO and DPDPE.

The antinociceptive properties of intrathecally (i.t.) administered [D-Ala2,

Functional selectivity of NK1 receptor signaling: peptide agonists can preferentially produce receptor activation or desensitization.

A cascade of events follows binding of an agonist ligand to the tachykinin NK(1) receptor. These events include activation of multiple signal transduction pathways as well as cellular modulation of receptor function by the process of desensitization.…

Tags: 2006, Animals, CHO Cells, Cricetinae, Dose-Response Relationship, Drug, Humans, Neurokinin-1/agonists/drug effects/*physiology, Rana catesbeiana, Rats, Receptors, Signal Transduction/*physiology, Simmons Mark A, Substance P/metabolism/pharmacology, Tachykinins/metabolism/pharmacology, The Journal of pharmacology and experimental therapeutics

Localization and function of NK(3) subtype tachykinin receptors of layer V pyramidal neurons of the guinea-pig medial prefrontal cortex.

The NK(3) subtype of tachykinin receptor has been implicated as a modulator of synaptic transmission in several brain regions, including the cerebral cortex. The localization and expression of NK(3) receptors within the brain vary from species to…

Tags: 2008, Animals, Autoradiography/methods, Dose-Response Relationship, Drug, Drug Interactions, Excitatory Amino Acid Antagonists/pharmacology, Excitatory Postsynaptic Potentials/drug effects/radiation effects, Guinea Pigs, In Vitro Techniques, Iodine Isotopes/pharmacokinetics, Male, Medd A M, Membrane Potentials/drug effects/physiology/radiation effects, Neurokinin B/analogs & derivatives/pharmacokinetics, Neurokinin-3/agonists/antagonists & inhibitors/*metabolism, Neuroscience, Patch-Clamp Techniques, Peptide Fragments/pharmacology, Prefrontal Cortex/*cytology, Protein Binding/drug effects, Pyramidal Cells/drug effects/*metabolism, Quinolines/pharmacology, Quinoxalines/pharmacology, Receptors, Simmons M A, Sobotka-Briner C D, Substance P/analogs & derivatives/pharmacology, Valine/analogs & derivatives/pharmacology

The role of dopamine and serotonin receptors in the mediation of the ethanol interoceptive cue.

The drug discrimination paradigm was used to evaluate the contribution of dopamine or serotonin receptors in the mediation of the stimulus properties of ethanol. Briefly, rats were trained to discriminate between ethanol (600 mg/kg, IP) and water…

Tags: 1988, Animals, Conditioning, Cues, Discrimination (Psychology)/*physiology, Dopamine/drug effects/*physiology, Dose-Response Relationship, Drug, Ethanol/*pharmacology, Inbred Strains, Male, Operant/physiology, Pharmacology, biochemistry, and behavior, Rats, Receptors, Schechter M D, Serotonin/drug effects/*physiology, Signs S A

Stability of the stimulus properties of drugs over time.

Three separate groups of rats were trained to discriminate the stimulus effects of either 600 mg/kg ethanol (n = 5), 0.8 mg/kg d-amphetamine (n = 8) or 1.0 mg/kg

Tags: *Discrimination (Psychology), 1989, Animals, Boja J W, Dextroamphetamine/*pharmacology, Dose-Response Relationship, Drug, Drug Tolerance, Ethanol/*pharmacology, Inbred Strains, Pharmacology, biochemistry, and behavior, Piperazines/*pharmacology, Rats, Schechter M D, Signs S A

Interaction of ethanol and tetrahydro-beta-carboline (THBC) in a discriminative task.

Rats (n = 10) were trained to discriminate between ethanol (600 mg/kg, IP) and its vehicle, or between THBC (20 mg/kg) and its vehicle in a two-lever food-motivated operant task. Once the discriminative training criterion was attained, rats in each…

Tags: 1988, Alcohol (Fayetteville, N.Y.), Animal/drug effects, Animals, Behavior, Carbolines/*pharmacology, Conditioning (Psychology)/drug effects, Discrimination Learning/*drug effects, Dose-Response Relationship, Drug, Drug Interactions, Ethanol/*pharmacology, Inbred Strains, Male, Rats, Schechter M D, Signs S A

Direct microinjection of cathinone into the rat brain produces discriminative stimuli.

Rats were trained to discriminate IP administration of 800 micrograms/kg cathinone using a food-motivated, two-lever discrimination procedure. Following training, 800 micrograms/kg cathinone discrimination was produced (generalized) by lower…

Ethanol discrimination in Fawn-Hooded rats is compromised when compared to other strains.

The drug discrimination paradigm was used to evaluate the behavioral differences in response to ethanol between three strains of rats, viz., Sprague-Dawley, N/Nih and Fawn-Hooded. This latter group is thought to have a genetically-transmitted…

Tags: *Discrimination Learning, 1993, Alcohol (Fayetteville, N.Y.), Animals, Dose-Response Relationship, Drug, Ethanol/*pharmacology, Male, Meehan S M, Rats, Schechter M D, Serotonin/physiology, Species Specificity, Sprague-Dawley

Dopaminergic mediation of the stimulant generalization of nicotine.

1. Experiments were conducted to investigate if the psychostimulant cathinone, like d-amphetamine, would produce generalization of the discriminative stimulus effects of nicotine. 2. Rats were trained to discriminate either 0.8 mg/kg cathinone from…

The lethal effects of ethanol and cocaine and their combination in mice: implications for cocaethylene formation.

The HS line of mice was used to determine the LD50 values for cocaine and ethanol, as well as for cocaethylene, the enzymatic product of their coadministration. The LD50 of cocaethylene was found to be significantly lower than that of cocaine, and…

Tags: 1995, Animals, Central Nervous System Depressants/*toxicity, Cocaine/*analogs & derivatives/metabolism/toxicity, Dopamine Uptake Inhibitors/*toxicity, Dose-Response Relationship, Drug, Drug Interactions, Ethanol/*toxicity, Female, Lethal Dose 50, Male, Meehan S M, Mice, Pharmacology, biochemistry, and behavior, Schechter M D, Sex Characteristics

Further evidence for the mechanisms that may mediate nicotine discrimination.

Rats were trained to discriminate the interoceptive stimuli produced by subcutaneously administered 0.4 mg/kg nicotine in a two-lever, food-motivated, operant task. Once criterion performance was attained, dose-response experiments indicated an ED50…

Tags: 1992, Animals, Calcium Channel Blockers/pharmacology, Dihydropyridines/pharmacology, Discrimination Learning, Dopamine/*metabolism, Dose-Response Relationship, Drug, Inbred Strains, Indoles/pharmacology, Isradipine, Male, Meehan S M, Nicotine/administration & dosage/*pharmacology, Pharmacology, biochemistry, and behavior, Rats, Schechter M D, Thiazepines/pharmacology, Tropisetron

Conditioned place preference produced by the psychostimulant cathinone.

Previous work has indicated that the psychostimulant cathinone produces a location preference in the conditioned place preference task. The present study expanded upon this earlier work by examining the dose-response nature of cathinone-induced…

Tags: 1993, Alkaloids/administration & dosage/*pharmacology, Animals, Central Nervous System Stimulants/administration & dosage/*pharmacology, Choice Behavior/drug effects, Conditioning (Psychology)/drug effects, Dose-Response Relationship, Drug, European journal of pharmacology, Habituation, Male, Meehan S M, Motor Activity/*drug effects, Psychophysiologic, Rats, Schechter M D, Sprague-Dawley

Conditioned place aversion produced by dopamine release inhibition.

CGS 10746B, a dopamine release inhibitor with properties similar to the atypical antipsychotic clozapine, was assessed as to its behavioral properties using spontaneous locomotor activity and the conditioned place preference test. Rats conditioned…

Phentermine+fenfluramine produce cocaine-like discriminative cues.

Drug discrimination studies were conducted in six male Sprague-Dawley rats trained to discriminate the interoceptive cues produced by 10 mg/kg cocaine in an effort to investigate if there is stimulus generalization to phentermine or phentermine +…

Tags: *Discrimination (Psychology), 1996, Animals, Cocaine/*pharmacology, Department of Anatomy & Neurobiology, Dose-Response Relationship, Drug, Fenfluramine/administration & dosage/*pharmacology, Life sciences, Male, McBurney D, NEOMED College of Medicine, Phentermine/administration & dosage/*pharmacology, Rats, Schechter M D, Sprague-Dawley

Differences in response to the aversive properties and activity effects of low dose ethanol in LAS and HAS selectively bred rats.

Rats selectively bred for high alcohol sleep times (HAS) and those that are less affected (LAS) by hypnotic doses (3.0-3.6 g/kg) of ethanol were tested for differential responses to the aversive effects of 1.0 g/kg ethanol in a conditioned place…

Tags: 1992, Animals, Avoidance Learning/*drug effects, Conditioning, Dose-Response Relationship, Drug, Ethanol/*pharmacology, Krimmer E C, Motor Activity/drug effects, Operant/drug effects, Psychopharmacology, Rats, Schechter M D, Sleep/drug effects, Species Specificity

Comparison of the behavioral effects of ibogaine from three sources: mediation of discriminative activity.

Ibogaine is an alkaloid employed for its hallucinatory properties in West Central Africa which has been the subject of alleged efficacy as an aid in the interruption and treatment of chemical dependency. The major sources of the Schedule I agent are:…

Tags: *Discrimination (Psychology), 1993, Animal/*drug effects, Animals, Behavior, Dose-Response Relationship, Drug, European journal of pharmacology, Gordon T L, Ibogaine/*pharmacology, Male, Rats, Schechter M D, Serotonin Receptor Agonists/pharmacology, Sprague-Dawley

Lack of generalization of nisoxetine with amphetamine in the rat.

Rats were trained to discriminate between the stimulus properties of intraperitoneally administered d-amphetamine (0.8 mg/kg) and its vehicle in a two-lever, food-motivated operant task. Once trained, doses of the norepinephrine reuptake inhibiting…

Tags: *Discrimination (Psychology), 1988, Animals, Boja J W, Conditioning, Dextroamphetamine/*pharmacology, Dose-Response Relationship, Drug, Fluoxetine/*analogs & derivatives/pharmacology, Inbred Strains, Male, Norepinephrine/antagonists & inhibitors, Operant/*drug effects, Pharmacology, biochemistry, and behavior, Rats, Reference Values, Schechter M D

CGS 10746B is able to attenuate the effects of amphetamine: further evidence for dopaminergic mediation.

Previous results indicate that agents which either decreases synthesis or block postsynaptic dopamine receptors will attenuate the discriminative stimulus produced by d-amphetamine. CGS 10746B has been reported to decrease dopamine release without…

Tags: 1988, Alkaloids/pharmacology, Animals, Antipsychotic Agents/*pharmacology, Apomorphine/pharmacology, Boja J W, Cocaine/pharmacology, Conditioning, Dextroamphetamine/antagonists & inhibitors/*pharmacology, Discrimination (Psychology)/*drug effects, Dopamine/*physiology, Dose-Response Relationship, Drug, Male, Operant/drug effects, Pharmacology, biochemistry, and behavior, Rats, Schechter M D, Thiazepines/*pharmacology

Use of TFMPP stimulus properties as a model of 5-HT1B receptor activation.

Recent evidence indicates that when 1-(3-trifluoromethylphenyl)piperazine (TFMPP) is used as a training drug in the drug discrimination paradigm it produces a stimulus effect that is site-selective at the 5-HT1B receptor. The present study sought to…

Tags: 1988, Animals, Biological, Discrimination Learning/*drug effects, Dose-Response Relationship, Drug, Male, Models, Norfenfluramine/pharmacology, Pharmaceutical Vehicles, Pharmacology, biochemistry, and behavior, Piperazines/*pharmacology, Rats, Receptors, Schechter M D, Serotonin/*drug effects/physiology, Serotonin/pharmacology

Time-dependent effect of ethanol upon discrimination behavior.

The discriminative stimulus properties produced by ethanol were employed to demonstrate differences in discriminative performance over time in rats trained at different postinjection times. Thus, one group of rats was trained to discriminate between…

Tags: 1989, Alcohol (Fayetteville, N.Y.), Animals, Discrimination (Psychology)/*drug effects, Dose-Response Relationship, Drug, Ethanol/*pharmacology, Inbred Strains, Male, Rats, Schechter M D, Time Factors

Temporal differences in behavioral effect of fenfluramine and norfenfluramine.

Ten male rats were trained to discriminate the anorectic drug d,l-fenfluramine (2.0 mg/kg intraperitoneally administered) from its vehicle using a food-reinforced (fixed-ratio 10 schedule) two-lever operant task. Once learned, the fenfluramine…

Tags: 1990, Animal/*drug effects, Animals, Behavior, Discrimination Learning/*drug effects, Dose-Response Relationship, Drug, Fenfluramine/*analogs & derivatives/*pharmacology, Inbred Strains, Injections, Intraperitoneal, Male, Norfenfluramine/*pharmacology, Pharmacology, biochemistry, and behavior, Rats, Schechter M D, Stereoisomerism

Serotonergic-dopaminergic mediation of 3,4-methylenedioxymethamphetamine (MDMA, "ecstasy").

A series of three experiments were conducted to investigate the possible serotonergic and dopaminergic mediation of the discriminative stimulus properties of the "designer" drug MDMA. In Experiment 1, rats trained to discriminate 1.5 mg/kg (+/-)-MDMA…

Rats become acutely tolerant to cathine after amphetamine or cathinone administration.

The drug discrimination paradigm was used to evaluate in rats the ability of the discriminate response to either 0.8 mg/kg d-amphetamine or 0.8 mg/kg l-cathinone to generalize to 2.4-6.0 mg/kg of the active cathinone metabolite d-norpseudoephedrine,…

Tags: 1990, Alkaloids/*pharmacology, Amphetamine/*pharmacology, Animals, Antipsychotic Agents/pharmacology, Discrimination (Psychology)/drug effects, Dose-Response Relationship, Drug, Drug Tolerance, Inbred Strains, Male, Phenylpropanolamine/*pharmacology, Psychopharmacology, Psychotropic Drugs/*pharmacology, Rats, Schechter M D, Thiazepines/pharmacology

Functional consequences of fenfluramine neurotoxicity.

Male Sprague-Dawley rats were trained to discriminate the anorectic drug d,l-fenfluramine (2.0 mg/kg intraperitoneally administered) from its vehicle using a food-motivated (fixed-ratio 10 schedule) two-lever operant task. Once trained, doses of 0.5,…

Tags: 1990, Animals, Conditioning, Discrimination Learning/drug effects, Dose-Response Relationship, Drug, Fenfluramine/*toxicity, Inbred Strains, Male, Nervous System Diseases/*chemically induced/psychology, Operant/drug effects, Pharmacology, biochemistry, and behavior, Rats, Reinforcement Schedule, Schechter M D

Effect of MDMA neurotoxicity upon its conditioned place preference and discrimination.

Experiments were conducted to investigate the functional consequences of a neurotoxic regimen of MDMA administration upon two behaviors, conditioned place preference and drug discrimination. Rats were trained to discriminate 1.5 mg/kg MDMA from its…

Dopaminergic nature of acute cathine tolerance.

Cathine is a psychoactive constituent in the leaves of the Khat shrub which are habitually ingested for their stimulatory effects in many parts of the world. Rats were trained to discriminate the stimulus effect of intraperitoneally administered 4.8…

Tags: 1990, Alkaloids/pharmacology, Animals, Antipsychotic Agents/pharmacology, Appetite Depressants/*pharmacology, Discrimination (Psychology)/drug effects, Discrimination Learning/drug effects, Dopamine/*physiology, Dose-Response Relationship, Drug, Drug Tolerance, Generalization (Psychology)/drug effects, Inbred Strains, Male, Pharmacology, biochemistry, and behavior, Phenylpropanolamine/*pharmacology, Rats, Schechter M D, Thiazepines/pharmacology

Discriminative stimulus effect of phenylephrine.

Rats were trained to discriminate phenylephrine in a two-lever, food-motivated operant task by increasing the i.p. administered training dose from 0.8 to 2 mg/kg. Stable discrimination to 2 mg/kg phenylephrine was established and testing of 0.5-2.5…

Comparison of anorectic drugs in rats trained to discriminate between satiation and deprivation.

Eight male rats were trained to discriminate between the internal states produced by food deprivation of 3 hours (satiation) and that produced by food deprivation of 27 hours duration (deprivation). One lever, in a two-lever operant chamber, had to…

Tags: *Food Deprivation, 1990, Amphetamine/*pharmacology, Analysis of Variance, Animals, Discrimination Learning/*drug effects, Dose-Response Relationship, Drug, Fenfluramine/*analogs & derivatives/*pharmacology, Inbred Strains, Life sciences, Male, Norfenfluramine/*pharmacology, Rats, Satiation/*drug effects, Schechter M D

Browse Items (132 total)