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| Content Provider | frontiers |
|---|---|
| Author | Zhou, Dongsheng Lv, Dan Wang, Zhen Zhang, Yanhua Chen, Zhongming Wang, Chuang |
| Abstract | Background: Evidence supports that the hypofunction of N-methyl-D-aspartate receptor (NMDAR) and downregulation of disrupted-in-schizophrenia 1 (DISC1) contribute to the pathophysiology of schizophrenia. N-methyl D-aspartate receptor subtype 2B (NR2B)-containing NMDAR are associated with cognitive dysfunction in schizophrenia. GLYX-13 is an NMDAR glycine-site functional partial agonist and cognitive enhancer that does not induce psychotomimetic side effects. However, it remains unclear whether NR2B plays a critical role in the GLYX-13-induced alleviation of schizophrenia-like behaviors in mice. Methods: The effect of GLYX-13 was tested by observing changes in locomotor activity, novel object recognition ability, and prepulse inhibition (PPI) induced by dizocilpine (known as MK-801) in mice. Lentivirus-mediated NR2B knockdown in the hippocampus was assessed to confirm the role of NR2B in GLYX-13 pathophysiology, using Western blots and immunohistochemistry. Results: The systemic administration of GLYX-13 (0.5 and 1 mg/kg, i.p.) ameliorates MK-801 (0.5 mg/kg, i.p.)-induced hyperlocomotion, deficits in memory, and PPI in mice. Additionally, GLYX-13 normalized the MK-801-induced alterations in signaling molecules, including NR2B and DISC1 in the hippocampus. Furthermore, we found that NR2B knockdown produced memory and PPI deficits without any changes in locomotor activity. Notably, DISC1 levels significantly decreased by NR2B knockdown. However, the effective dose of GLYX-13 did not alleviate the memory and PPI dysfunctions or downregulation of DISC1 induced by NR2B knockdown. Conclusion: Our results suggest GLYX-13 as a candidate for schizophrenia treatment, and NR2B and DISC1 in the hippocampus may account for the molecular mechanisms of GLYX-13. |
| ISSN | 16625099 |
| DOI | 10.3389/fnmol.2018.00121 |
| Volume Number | 11 |
| Journal | Frontiers in Molecular Neuroscience |
| Language | English |
| Publisher Date | 2018-04-11 |
| Access Restriction | Open |
| Subject Keyword | GLYX-13 N-methyl-D-aspartate receptor Disrupted-In-Schizophrenia 1 N-methyl D-aspartate receptor subtype 2B Schizophrenia |
| Content Type | Text |
| Resource Type | Article |
| Subject | Molecular Biology Cellular and Molecular Neuroscience |
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