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• W3178798889 endingPage "100016" @default.
• W3178798889 startingPage "100016" @default.
• W3178798889 abstract "The recurrent excitatory circuits in dlPFC underlying working memory are known to require activation of glutamatergic NMDA receptors (NMDAR). The neurons in these circuits also rely on acetylcholine to maintain persistent activity, with evidence for actions at both nicotinic α7 receptors and muscarinic M1 receptors (M1R). It is known that nicotinic α7 receptors interact with NMDAR in these circuits, but the interactions between M1R and NMDAR on dlPFC neuronal activity are unknown. Here, we investigated whether M1Rs contribute to the permissive effects of ACh in dlPFC circuitry underlying working memory via interactions with NMDA receptors. We tested interactions between M1Rs and NMDARs in vivo on single neuron activity in rhesus macaques performing a working memory task, as well as on working memory behavior in rodents following infusion of M1R and NMDAR compounds into mPFC. We report that M1R antagonists block the enhancing effects of NMDA application, consistent with M1R permissive actions. Conversely, M1R positive allosteric modulators prevented the detrimental effects of NMDAR blockade in single neurons in dlPFC and on working memory performance in rodents. These data support an interaction between M1R and NMDARs in working memory circuitry in both primates and rats, and suggest M1Rs contribute to the permissive actions of ACh in primate dlPFC. These results are consistent with recent data suggesting that M1R agonists may be helpful in the treatment of schizophrenia, a cognitive disorder associated with NMDAR dysfunction." @default.
• W3178798889 created "2021-07-19" @default.
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• W3178798889 date "2021-01-01" @default.
• W3178798889 modified "2023-10-13" @default.
• W3178798889 title "M1 receptors interacting with NMDAR enhance delay-related neuronal firing and improve working memory performance" @default.
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• W3178798889 doi "https://doi.org/10.1016/j.crneur.2021.100016" @default.
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