PMID- 22408607 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20121002 LR - 20211021 IS - 1662-5102 (Electronic) IS - 1662-5102 (Linking) VI - 6 DP - 2012 TI - Dynamic regulation of NMDAR function in the adult brain by the stress hormone corticosterone. PG - 9 LID - 10.3389/fncel.2012.00009 [doi] LID - 9 AB - Stress and corticosteroids dynamically modulate the expression of synaptic plasticity at glutamatergic synapses in the developed brain. Together with alpha-amino-3-hydroxy-methyl-4-isoxazole propionic acid receptors (AMPAR), N-methyl-D-aspartate receptors (NMDAR) are critical mediators of synaptic function and are essential for the induction of many forms of synaptic plasticity. Regulation of NMDAR function by cortisol/corticosterone (CORT) may be fundamental to the effects of stress on synaptic plasticity. Recent reports of the efficacy of NMDAR antagonists in treating certain stress-associated psychopathologies further highlight the importance of understanding the regulation of NMDAR function by CORT. Knowledge of how corticosteroids regulate NMDAR function within the adult brain is relatively sparse, perhaps due to a common belief that NMDAR function is stable in the adult brain. We review recent results from our laboratory and others demonstrating dynamic regulation of NMDAR function by CORT in the adult brain. In addition, we consider the issue of how differences in the early life environment may program differential sensitivity to modulation of NMDAR function by CORT and how this may influence synaptic function during stress. Findings from these studies demonstrate that NMDAR function in the adult hippocampus remains sensitive to even brief exposures to CORT and that the capacity for modulation of NMDAR may be programmed, in part, by the early life environment. Modulation of NMDAR function may contribute to dynamic regulation of synaptic plasticity and adaptation in the face of stress, however, enhanced NMDAR function may be implicated in mechanisms of stress-related psychopathologies including depression. FAU - Tse, Yiu Chung AU - Tse YC AD - Neuroscience Division, Douglas Mental Health University Institute, McGill University, Montreal QC, Canada. FAU - Bagot, Rosemary C AU - Bagot RC FAU - Wong, Tak Pan AU - Wong TP LA - eng PT - Journal Article DEP - 20120306 PL - Switzerland TA - Front Cell Neurosci JT - Frontiers in cellular neuroscience JID - 101477935 PMC - PMC3294281 OTO - NOTNLM OT - corticosteroid receptor OT - electrophysiology OT - learning and memory OT - receptor trafficking OT - stress OT - synaptic plasticity EDAT- 2012/03/13 06:00 MHDA- 2012/03/13 06:01 PMCR- 2012/01/01 CRDT- 2012/03/13 06:00 PHST- 2011/11/15 00:00 [received] PHST- 2012/02/17 00:00 [accepted] PHST- 2012/03/13 06:00 [entrez] PHST- 2012/03/13 06:00 [pubmed] PHST- 2012/03/13 06:01 [medline] PHST- 2012/01/01 00:00 [pmc-release] AID - 10.3389/fncel.2012.00009 [doi] PST - epublish SO - Front Cell Neurosci. 2012 Mar 6;6:9. doi: 10.3389/fncel.2012.00009. eCollection 2012.