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Assessing acute effects of methylphenidate and modafinil on inhibitory capacity, time estimation, attentional lapses, and compulsive-like behavior in rats.
Behav Pharmacol
January 2025
Departamento de Psicología, Universidad Iberoamericana Ciudad de México.
Medications known as 'cognitive enhancers' are increasingly being consumed off-label by healthy people, raising concerns about their safety. The aim of our study was to profile behavioral performance upon oral administration of methylphenidate (2.5 mg/kg) and modafinil (64 mg/kg) - two popular cognitive enhancers - and upon their discontinuation.
View Article and Find Full Text PDFPre-clinical acute oral toxicity and subacute neurotoxicity risk assessments on sprague dawley rats treated with single dose or repeated doses of flavonoid-enriched fraction extracted from leaves.
Drug Chem Toxicol
January 2025
School of Health Sciences, Health Campus, Universiti Sains Malaysia, Kubang Kerian, Malaysia.
possesses promising flavonoid secondary metabolites. However, translation of these compounds into clinical practice for neurological disease treatment is halted as the toxicity and safety profile of the plant extracts are yet to be determined. This study was conducted to assess the acute oral toxicity and subacute neurotoxicity that could be imposed by the flavonoid-enriched fraction (FEF) extracted from leaves, by strictly following the procedures set in Organization for Economic Co-operation and Development (OECD) Guidelines No.
View Article and Find Full Text PDFSystemic bupropion treatment reduces long-access cocaine self-administration in male and female rats.
J Psychopharmacol
January 2025
Department of Physiology, Louisiana State University Health Sciences Center, New Orleans, LA, USA.
Background: More than 1 million people in the United States meet the criteria for cocaine use disorder (CUD), and over 19,000 people died from cocaine-related overdoses in 2020, but there are currently no FDA-approved medications for the treatment of CUD. Bupropion is an antidepressant currently prescribed to treat depression and nicotine addiction that acts by inhibiting norepinephrine and dopamine transporters.
Methods: In this study, we tested the effect of several doses of systemic bupropion on cocaine self-administration in male and female Wistar rats.
Long-term effects of adolescent versus adult nicotine self-administration on cholinergic modulation of dopamine in the nucleus accumbens core.
Drug Alcohol Depend
January 2025
Department of Translational Neuroscience, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA. Electronic address:
Adolescence is a developmental period marked by significant alterations to brain neurobiology and behavior. Adolescent nicotine use disrupts developmental trajectories and increases vulnerability to maladaptive drug-taking in adulthood. The mesolimbic dopamine (DA) system, including the nucleus accumbens core (NAc), mediates the reinforcing effects of nicotine.
View Article and Find Full Text PDFContribution of rat insular cortex to stimulus-guided action.
J Neurosci
January 2025
Univ. Bordeaux, CNRS, INCIA, UMR 5287, F-33000 Bordeaux, France
Anticipating rewards is fundamental for decision-making. Animals often use cues to assess reward availability and to make predictions about future outcomes. The gustatory region of the insular cortex (IC), the so-called gustatory cortex, has a well-established role in the representation of predictive cues, such that IC neurons encode both a general form of outcome expectation as well as anticipatory outcome-specific knowledge.
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