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To study the glutamatergic mechanisms underlying changes in excitability in the brain stem pain modulatory circuitry after injury, we examined GluR1 serine 831 phosphorylation in the rostral ventromedial medulla (RVM) after complete Freund's adjuvant-induced hindpaw inflammation. Western blots indicated a rapid and prolonged (30min and 7 days post-inflammation) increase in phosphoserine 831 GluR1...
Our previous study demonstrated an increase in α-amino-3-hydroxy-5-methylisoxazole-4-propionate (AMPA) receptor sensitivity in the rostral ventromedial medulla (RVM) associated with enhanced net descending inhibition after inflammatory hyperalgesia. The present study further studied the time-dependent changes in AMPA-produced inhibition after inflammation and the underlying molecular mechanisms. Inflammation...
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