Age-specific effects of early MK-801 treatment on working memory in female rats

Age-specific effects of early MK-801 treatment on working memory in female rats
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早期 MK-801 治疗对雌性大鼠工作记忆的年龄特异性影响

DOI:
10.1097/wnr.0b013e328346e154
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发表时间:
2011-06
期刊:
影响因子:
1.7
通讯作者:
Huang, Run-Hu
Huang, Run-Hu
中科院分区:
医学4区
文献类型:
--
作者:
Guo, Chun-Mei;Yang, Yang;Wang, Xiao-Dong;Feng, Yu;Si, Tian-Mei;Li, Ji-Tao;Su, Yun-Ai;Huang, Run-Hu

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N-甲基-D-天冬氨酸受体在发育可塑性中起着至关重要的作用。有证据表明,新生儿暴露于N-甲基-D-天冬氨酸受体拮抗剂损害成年大鼠的认知能力。本研究研究了新生MK-801给药是否会对青春期和成年雌性大鼠的工作记忆和感觉运动门控产生长期和年龄特异性影响。在出生后第5-14天(PND)给予MK-801后,雌性大鼠在青春期(PND:35-42)表现出工作记忆轻度受损。相反,成年(PND:63-70)雌性大鼠的工作记忆明显中断。然而,前脉冲抑制和惊吓幅度没有显着影响,在这两个年龄。这些结果表明,新生MK-801改善工作记忆缺陷,尤其是在青春期后的雌性大鼠。
The N-methyl-D-aspartate receptor plays a crucial role in developmental plasticity. Evidence shows that neonatal exposure to N-methyl-D-aspartate receptor antagonists impairs cognition in adult rats. This study investigated whether neonatal MK-801 treatment would produce long-term and age-specific effects on working memory and sensorimotor gating in adolescent and adult female rats. After treatment with MK-801 at postnatal days (PND) 5–14, female rats exhibited slightly impaired working memory during adolescence (PND: 35–42). In contrast, working memory was remarkably disrupted in adult (PND: 63–70) female rats. However, prepulse inhibition and startle amplitudes were not significantly affected at both ages. These findings indicate that neonatal MK-801 elicits working memory deficits, especially in the postpuberty female rats.
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