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- W2017105746 abstract "Neuropeptide Y (NPY) and N-methyl-d-aspartate (NMDA) receptors in the lateral (LH) and perifornical hypothalamus (PFH) are believed to be involved in the stimulation of feeding behavior. To investigate the possibility that neurons with these receptors interact to stimulate eating, the NMDA receptor antagonists d-(−)-2-amino-5-phosphonopentanoic acid (D-AP5) or 7-chlorokynurenic acid (7-CK) were injected into the LH or PFH of satiated rats 5 min prior to NPY in the same site and subsequent food intake was measured 1, 2, and 4 h postinjection. The injection of NPY (78 pmol/0.3 μl aCSF) in the PFH produced an average food intake of 9.7 g in 4 h, compared to the intake of 1.3 g after the artificial cerebrospinal fluid (aCSF) vehicle. D-AP5 (1, 10, or 20 nmol/0.3 μl aCSF) pretreatment suppressed NPY-induced eating, with the 20 nmol dose of D-AP5 producing up to an 80% suppression of elicited food intake down to 1.9 g in 4 h. Similar effects were produced with the LH as the injection site. Illustrating the specificity of the NMDA receptor antagonist's suppression of NPY-elicited feeding, D-AP5 suppressed NMDA-elicited feeding but did not affect the eating response induced by kainic acid. Consistent with the effects of D-AP5, the NMDA receptor antagonist 7-CK (40 nmol/0.3 μl dimethyl sulfoxide, DMSO) suppressed feeding elicited by NPY in the LH by 78%. Collectively, the findings suggest that the feeding elicited by NPY is dependent upon the activation of the NMDA receptors in the LH and PFH." @default.
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- W2017105746 date "2005-11-01" @default.
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- W2017105746 title "NMDA receptors mediate feeding elicited by neuropeptide Y in the lateral and perifornical hypothalamus" @default.
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- W2017105746 doi "https://doi.org/10.1016/j.brainres.2005.09.045" @default.
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