PMID- 34294612 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210901 IS - 1738-1088 (Print) IS - 2093-4327 (Electronic) IS - 1738-1088 (Linking) VI - 19 IP - 3 DP - 2021 Aug 31 TI - Novel Biomarkers of Alzheimer's Disease: Based Upon N-methyl-D-aspartate Receptor Hypoactivation and Oxidative Stress. PG - 423-433 LID - 10.9758/cpn.2021.19.3.423 [doi] AB - Early detection and prevention of Alzheimer's disease (AD) is important. The current treatment for early AD is acetylcholine esterase inhibitors (AChEIs); however, the efficacy is poor. Besides, AChEI did not show efficacy in mild cognitive impairment (MCI). Beta-amyloid (A) deposits have been regarded to be highly related to the pathogenesis of AD. However, many clinical trials aiming at the clearance of A deposits failed to improve the cognitive decline of AD, even at its early phase. There should be other important mechanisms unproven in the course of AD and MCI. Feasible biomarkers for the diagnosis and treatment response of AD are lacking to date. The N-methyl-D-aspartate receptor (NMDAR) activation plays an important role in learning and memory. On the other hand, oxidative stress has been regarded to contribute to aging with the assumption that free radicals damage cell constituents and connective tissues. Our recent study found that an NMDAR enhancer, sodium benzoate (the pivotal inhibitor of D-amino acid oxidase [DAAO]), improved the cognitive and global function of patients with early-phase AD. Further, we found that peripheral DAAO levels were higher in patients with MCI and AD than healthy controls. We also found that sodium benzoate was able to change the activity of antioxidant. These pieces of evidence suggest that the NMDAR function is associated with anti-oxidation, and have potential to be biomarkers for the diagnosis and treatment response of AD. FAU - Chiang, Ting-I AU - Chiang TI AUID- ORCID: 0000-0001-7548-0967 AD - Department of Psychiatry, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan. FAU - Yu, Yi-Hsiang AU - Yu YH AUID- ORCID: 0000-0001-9478-2733 AD - Department of Dermatology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan. FAU - Lin, Chieh-Hsin AU - Lin CH AUID- ORCID: 0000-0001-6949-8968 AD - Department of Psychiatry, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan. AD - School of Medicine, Chang Gung University, Taoyuan, Taiwan. AD - Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan. FAU - Lane, Hsien-Yuan AU - Lane HY AUID- ORCID: 0000-0003-2162-8174 AD - Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan. AD - Department of Psychiatry and Brain Disease Research Center, China Medical University Hospital, Taichung, Taiwan. AD - Department of Psychology, College of Medical and Health Science, Asia University, Taichung, Taiwan. LA - eng PT - Journal Article PT - Review PL - Korea (South) TA - Clin Psychopharmacol Neurosci JT - Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology JID - 101207332 PMC - PMC8316669 OTO - NOTNLM OT - Alzheimer disease OT - N-methyl-D-aspartate OT - Oxidative stress OT - Receptors COIS- Conflicts of Interest No potential conflict of interest relevant to this article was reported. EDAT- 2021/07/24 06:00 MHDA- 2021/07/24 06:01 PMCR- 2021/08/31 CRDT- 2021/07/23 05:50 PHST- 2020/10/15 00:00 [received] PHST- 2020/12/07 00:00 [revised] PHST- 2020/12/14 00:00 [accepted] PHST- 2021/07/23 05:50 [entrez] PHST- 2021/07/24 06:00 [pubmed] PHST- 2021/07/24 06:01 [medline] PHST- 2021/08/31 00:00 [pmc-release] AID - cpn.2021.19.3.423 [pii] AID - cpn-19-3-423 [pii] AID - 10.9758/cpn.2021.19.3.423 [doi] PST - ppublish SO - Clin Psychopharmacol Neurosci. 2021 Aug 31;19(3):423-433. doi: 10.9758/cpn.2021.19.3.423.