Abstract
Polyriboinosinic-polyribocytidilic acid (polyI:C) is a synthetic analog that elicits viral-like immune responses in mammals. We have recently found that polyI:C treatment in neonatal mice induced abnormalities of emotional, cognitive, and sensorimotor gating and dysfunction of glutamatergic neurotransmission in adulthood. In this study, we investigated the effect of the NMDA-receptor co-agonist D-serine on polyI:C-induced behavioral abnormalities in mice. Neonatal ICR mice were repeatedly injected with polyI:C for 5 days from postnatal day 2 to 6. At 10 weeks, sensorimotor gating function was analyzed in the prepulse inhibition (PPI) test. Emotional function was analyzed in open field and social interaction tests. Cognitive function was analyzed by novel object recognition tests. D-Serine dose-dependently improved polyI:C-induced impairment of emotional and cognitive behaviors whereas it had no effect on PPI deficit in adults. The ameliorating effects of D-serine were antagonized by pretreatment with an NMDA-receptor antagonist, MK-801. Although the mRNA level of D-amino acid oxidase (DAAO) was increased in the prefrontal cortex and hippocampus of neonatal polyI:C-treated mice in adulthood, no changes were observed in D-serine content and DAAO enzymatic activity. These results suggest that D-serine ameliorates emotional and cognitive impairments of the polyI:C-treated mice through potentiating NMDA receptor activity.
| Original language | English |
|---|---|
| Pages (from-to) | 213-227 |
| Number of pages | 15 |
| Journal | Journal of Pharmacological Sciences |
| Volume | 120 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 26-11-2012 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Pharmacology
- Molecular Medicine
Cite this
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D-serine ameliorates neonatal polyI:C treatment-induced emotional and cognitive impairments in adult mice. / Nagai, Taku; Yu, Jinghua; Kitahara, Yuko; Nabeshima, Toshitaka; Yamada, Kiyofumi.
In: Journal of Pharmacological Sciences, Vol. 120, No. 3, 26.11.2012, p. 213-227.Research output: Contribution to journal › Article
TY - JOUR
T1 - D-serine ameliorates neonatal polyI:C treatment-induced emotional and cognitive impairments in adult mice
AU - Nagai, Taku
AU - Yu, Jinghua
AU - Kitahara, Yuko
AU - Nabeshima, Toshitaka
AU - Yamada, Kiyofumi
PY - 2012/11/26
Y1 - 2012/11/26
N2 - Polyriboinosinic-polyribocytidilic acid (polyI:C) is a synthetic analog that elicits viral-like immune responses in mammals. We have recently found that polyI:C treatment in neonatal mice induced abnormalities of emotional, cognitive, and sensorimotor gating and dysfunction of glutamatergic neurotransmission in adulthood. In this study, we investigated the effect of the NMDA-receptor co-agonist D-serine on polyI:C-induced behavioral abnormalities in mice. Neonatal ICR mice were repeatedly injected with polyI:C for 5 days from postnatal day 2 to 6. At 10 weeks, sensorimotor gating function was analyzed in the prepulse inhibition (PPI) test. Emotional function was analyzed in open field and social interaction tests. Cognitive function was analyzed by novel object recognition tests. D-Serine dose-dependently improved polyI:C-induced impairment of emotional and cognitive behaviors whereas it had no effect on PPI deficit in adults. The ameliorating effects of D-serine were antagonized by pretreatment with an NMDA-receptor antagonist, MK-801. Although the mRNA level of D-amino acid oxidase (DAAO) was increased in the prefrontal cortex and hippocampus of neonatal polyI:C-treated mice in adulthood, no changes were observed in D-serine content and DAAO enzymatic activity. These results suggest that D-serine ameliorates emotional and cognitive impairments of the polyI:C-treated mice through potentiating NMDA receptor activity.
AB - Polyriboinosinic-polyribocytidilic acid (polyI:C) is a synthetic analog that elicits viral-like immune responses in mammals. We have recently found that polyI:C treatment in neonatal mice induced abnormalities of emotional, cognitive, and sensorimotor gating and dysfunction of glutamatergic neurotransmission in adulthood. In this study, we investigated the effect of the NMDA-receptor co-agonist D-serine on polyI:C-induced behavioral abnormalities in mice. Neonatal ICR mice were repeatedly injected with polyI:C for 5 days from postnatal day 2 to 6. At 10 weeks, sensorimotor gating function was analyzed in the prepulse inhibition (PPI) test. Emotional function was analyzed in open field and social interaction tests. Cognitive function was analyzed by novel object recognition tests. D-Serine dose-dependently improved polyI:C-induced impairment of emotional and cognitive behaviors whereas it had no effect on PPI deficit in adults. The ameliorating effects of D-serine were antagonized by pretreatment with an NMDA-receptor antagonist, MK-801. Although the mRNA level of D-amino acid oxidase (DAAO) was increased in the prefrontal cortex and hippocampus of neonatal polyI:C-treated mice in adulthood, no changes were observed in D-serine content and DAAO enzymatic activity. These results suggest that D-serine ameliorates emotional and cognitive impairments of the polyI:C-treated mice through potentiating NMDA receptor activity.
UR - http://www.scopus.com/inward/record.url?scp=84869408132&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84869408132&partnerID=8YFLogxK
U2 - 10.1254/jphs.12142FP
DO - 10.1254/jphs.12142FP
M3 - Article
VL - 120
SP - 213
EP - 227
JO - Journal of Pharmacological Sciences
JF - Journal of Pharmacological Sciences
SN - 1347-8613
IS - 3
ER -