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Methylglyoxal (MG) is an endogenously produced non-enzymatic side product of glycolysis that acts as a partial agonist at GABA receptors. MG that is metabolized by the enzyme glyoxalase-1 (GLO1). Inhibition of GLO1 increases methylglyoxal levels, and has been shown to modulate various behaviors, including decreasing seeking of cocaine-paired cues and ethanol consumption.
View Article and Find Full Text PDFL-type calcium channel blockade attenuates the anxiogenic-like and pro-depressive-like effects of cocaine abstinence in female and male rats.
Neuroscience
January 2025
Department of Psychiatry, Yale School of Medicine, New Haven, CT, USA; Department of Cellular and Molecular Physiology, Yale School of Medicine, New Haven, CT, USA; Wu Tsai Institute, Yale University, New Haven, CT, USA; Interdepartmental Neuroscience Program, Yale University, New Haven, CT, USA. Electronic address:
Cocaine abstinence and withdrawal are linked to relapse, heightened anxiety, and depressive-like symptoms. While L-type calcium channels (LTCCs) have been associated with cocaine use disorders in humans and drug-seeking behavior in rodent models, their role in mood-related symptoms during cocaine abstinence remains unclear. This study examined whether blocking LTCCs with isradipine could alter anxiety and depressive symptoms induced by cocaine abstinence.
View Article and Find Full Text PDFAdolescent circadian rhythm disruption increases reward and risk-taking.
Front Neurosci
December 2024
Department of Psychiatry, Translational Neuroscience Program, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States.
Introduction: Circadian rhythm disturbances have long been associated with the development of psychiatric disorders, including mood and substance use disorders. Adolescence is a particularly vulnerable time for the onset of psychiatric disorders and for circadian rhythm and sleep disruptions. Preclinical studies have found that circadian rhythm disruption (CRD) impacts the brain and behavior, but this research is largely focused on adult disruptions.
View Article and Find Full Text PDFA sex-specific effect of M muscarinic cholinergic autoreceptor deletion on locomotor stimulation by cocaine and scopolamine.
Front Mol Neurosci
December 2024
Laboratory of Neuropsychiatry, Psychiatric Centre Copenhagen, Mental Health Services in the Capital Region of Denmark and University of Copenhagen, Copenhagen, Denmark.
Objective: Acetylcholine modulates the activity of the direct and indirect pathways within the striatum through interaction with muscarinic M and M receptors. M receptors are uniquely positioned to regulate plasticity within the direct pathway and play a substantial role in reward and addiction-related behaviors. However, the role of M receptors on cholinergic neurons has been less explored.
View Article and Find Full Text PDFReduced sensitivity to cocaine effects and changes in mesocorticolimbic dopamine receptors in adolescent sexually active female rats.
Psychopharmacology (Berl)
December 2024
Evolutionary Genetics Department, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay.
Rationale: The sexual behavior of the female rat is highly motivated, and the mesocorticolimbic dopaminergic system -involved in psychostimulants effects- has been implicated in its regulation. Female rats begin to express sexual behavior during adolescence, a period during which this system is not yet mature.
Objective: To examine the impact of cocaine on sexual motivation and behavior of adolescent and adult female rats, and to determine the dopamine receptors binding in mesocorticolimbic areas of these females.
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