ArticleSleep science (Sao Paulo, Brazil)
REM sleep deprivation promotes a dopaminergic influence in the striatal MT2 anxiolytic-like effects.
Article in Sleep science (Sao Paulo, Brazil). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed, 15 citations in OpenAlex.
- Potential therapeutic effects of curcumin, with or without L-DOPA, on motor and cognitive functions and hippocampal changes in rotenone-treated rats.Metabolic brain disease · 2025Article
- Age-Related Effects of Exogenous Melatonin on Anxiety-like Behavior in C57/B6J Mice.Biomedicines · 2023Article
- Folic Acid and Vitamin B12 Prevent Deleterious Effects of Rotenone on Object Novelty Recognition Memory andGenes · 2022Article
- Epworth sleepiness scale in medical residents: quality of sleep and its relationship to quality of life.Journal of occupational medicine and toxicology (London, England) · 2018Article
- Melatonin prevents sleep deprivation-associated anxiety-like behavior in rats: role of oxidative stress and balance between GABAergic and glutamatergic transmission.American journal of translational research · 2017Article
- Michel Jouvet and his Importance for Brazilian Preclinical Sleep Research.Sleep science (Sao Paulo, Brazil)Article
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5 authors at 1 institution in 1 country.
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Abstract
The aim of this study was to investigate the possible anxiolytic-like effects of striatal MT2 activation, and its counteraction induced by the selective blockade of this receptor. Furthermore, we analyzed this condition under the paradigm of rapid eye movement (REM) sleep deprivation (REMSD) and the animal model of Parkinson's disease (PD) induced by rotenone. Male Wistar rats were infused with intranigral rotenone (12 μg/μL), and 7 days later were subjected to 24 h of REMSD. Afterwards the rats underwent striatal micro-infusions of selective melatonin MT2 receptor agonist, 8-M-PDOT (10 μg/μL) or selective melatonin MT2 receptor antagonist, 4-P-PDOT (5 μg/μL) or vehicle. Subsequently, the animals were tested in the open-field (OP) and elevated plus maze (EPM) tests. Results indicated that the activation of MT2 receptors produced anxiolytic-like effects. In opposite, the MT2 blockade did not show an anxiogenic-like effect. Besides, REMSD induced anxiolytic-like effects similar to 8-M-PDOT. MT2 activation generated a prevalent locomotor increase compared to MT2 blockade in the context of REMSD. Together, these results suggest a striatal MT2 modulation associated to the REMSD-induced dopaminergic supersensitivity causing a possible dopaminergic influence in the MT2 anxiolytic-like effects in the intranigral rotenone model of PD.
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