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Adil KJ, Remonde CG, Gonzales EL, Boo KJ, Kwon KJ, Kim DH, Kim HJ, Cheong JH, Shin CY, Jeon SJ. Behavioral Deficits in Adolescent Mice after Sub-Chronic Administration of NMDA during Early Stage of Postnatal Development. Biomol Ther (Seoul) 2022; 30:320-327. [PMID: 35135902 PMCID: PMC9252881 DOI: 10.4062/biomolther.2021.194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 01/07/2022] [Accepted: 01/11/2022] [Indexed: 11/05/2022] Open
Abstract
Neurodevelopmental disorders are complex conditions that pose difficulty in the modulation of proper motor, sensory and cognitive function due to dysregulated neuronal development. Previous studies have reported that an imbalance in the excitation/ inhibition (E/I) in the brain regulated by glutamatergic and/or GABAergic neurotransmission can cause neurodevelopmental and neuropsychiatric behavioral deficits such as autism spectrum disorder (ASD). NMDA acts as an agonist at the NMDA receptor and imitates the action of the glutamate on that receptor. NMDA however, unlike glutamate, only binds to and regulates the NMDA receptor subtypes and not the other glutamate receptors. This study seeks to determine whether NMDA administration in mice i.e., over-activation of the NMDA system would result in long-lasting behavioral deficits in the adolescent mice. Both gender mice were treated with NMDA or saline at early postnatal developmental period with significant synaptogenesis and synaptic maturation. On postnatal day 28, various behavioral experiments were conducted to assess and identify behavioral characteristics. NMDAtreated mice show social deficits, and repetitive behavior in both gender mice at adolescent periods. However, only the male mice but not female mice showed increased locomotor activity. This study implies that neonatal exposure to NMDA may illicit behavioral features similar to ASD. This study also confirms the validity of the E/I imbalance theory of ASD and that NMDA injection can be used as a pharmacologic model for ASD. Future studies may explore the mechanism behind the gender difference in locomotor activity as well as the human relevance and therapeutic significance of the present findings.
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Affiliation(s)
- Keremkleroo Jym Adil
- Department of Pharmacology, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Chilly Gay Remonde
- Department of Pharmacology, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Edson Luck Gonzales
- Department of Pharmacology, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Kyung-Jun Boo
- Department of Pharmacology, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Kyong Ja Kwon
- Department of Pharmacology, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Dong Hyun Kim
- Department of Pharmacology, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Hee Jin Kim
- Uimyung Research Institute for Neuroscience, Department of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea
| | - Jae Hoon Cheong
- School of Pharmacy, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Chan Young Shin
- Department of Pharmacology, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Se Jin Jeon
- Department of Pharmacology, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea
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