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2016 ; 36
(44
): 11158-11164
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Ketamine: NMDA Receptors and Beyond
#MMPMID27807158
Zorumski CF
; Izumi Y
; Mennerick S
J Neurosci
2016[Nov]; 36
(44
): 11158-11164
PMID27807158
show ga
Human studies examining the effects of the dissociative anesthetic ketamine as a
model for psychosis and as a rapidly acting antidepressant have spurred great
interest in understanding ketamine's actions at molecular, cellular, and network
levels. Although ketamine has unequivocal uncompetitive inhibitory effects on
N-methyl-d-aspartate receptors (NMDARs) and may preferentially alter the function
of NMDARs on interneurons, recent work has questioned whether block of NMDARs is
critical for its mood enhancing actions. In this viewpoint, we examine the
evolving literature on ketamine supporting NMDARs as important triggers for
certain psychiatric effects and the possibility that the antidepressant trigger
is unrelated to NMDARs. The rapidly evolving story of ketamine offers great hope
for untangling and treating the biology of both depressive and psychotic
illnesses.