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The neuroprotective effects of AMN082 on neuronal apoptosis in rats after traumatic brain injury
BMC Neuroscience ( IF 2.4 ) Pub Date : 2021-06-25 , DOI: 10.1186/s12868-021-00649-w
Chung-Che Lu , Tee-Tau Eric Nyam , Jinn-Rung Kuo , Yao-Lin Lee , Chung-Ching Chio , Che-Chuan Wang

The aim of this study was to investigate whether AMN082 exerts its neuroprotective effect by attenuating glutamate receptor-associated neuronal apoptosis and improving functional outcomes after traumatic brain injury (TBI). Anesthetized male Sprague–Dawley rats were divided into the sham-operated, TBI + vehicle, and TBI + AMN082 groups. AMN082 (10 mg/kg) was intraperitoneally injected 0, 24, or 48 h after TBI. In the 120 min after TBI, heart rate, mean arterial pressure, intracranial pressure (ICP), and cerebral perfusion pressure (CPP) were continuously measured. Motor function, the infarct volume, neuronal nitrosative stress-associated apoptosis, and N-methyl-d-aspartate receptor 2A (NR2A) and NR2B expression in the pericontusional cortex were measured on the 3rd day after TBI. The results showed that the AMN082-treated group had a lower ICP and higher CPP after TBI. TBI-induced motor deficits, the increase in infarct volume, neuronal apoptosis, and 3-nitrotyrosine and inducible nitric oxide synthase expression in the pericontusional cortex were significantly improved by AMN082 therapy. Simultaneously, AMN082 increased NR2A and NR2B expression in neuronal cells. We concluded that intraperitoneal injection of AMN082 for 3 days may ameliorate TBI by attenuating glutamate receptor-associated nitrosative stress and neuronal apoptosis in the pericontusional cortex. We suggest that AMN082 administration in the acute stage may be a promising strategy for TBI.

中文翻译:

AMN082对大鼠脑外伤后神经元凋亡的保护作用

本研究的目的是研究 AMN082 是否通过减弱谷氨酸受体相关的神经元凋亡和改善创伤性脑损伤 (TBI) 后的功能结果来发挥其神经保护作用。将麻醉的雄性 Sprague-Dawley 大鼠分为假手术组、TBI + 载体组和 TBI + AMN082 组。在 TBI 后 0、24 或 48 小时腹膜内注射 AMN082 (10 mg/kg)。TBI后120 min内,连续测量心率、平均动脉压、颅内压(ICP)和脑灌注压(CPP)。在 TBI 后第 3 天测量运动功能、梗死体积、神经元亚硝化应激相关的细胞凋亡和 N-甲基-d-天冬氨酸受体 2A (NR2A) 和 NR2B 在周围皮层中的表达。结果显示,AMN082 治疗组在 TBI 后具有较低的 ICP 和较高的 CPP。AMN082 治疗可显着改善 TBI 诱导的运动障碍、梗死体积增加、神经元凋亡以及 3-硝基酪氨酸和可诱导的一氧化氮合酶在挫伤周围皮层的表达。同时,AMN082 增加了神经元细胞中 NR2A 和 NR2B 的表达。我们得出结论,腹腔内注射 AMN082 3 天可通过减轻谷氨酸受体相关的亚硝化应激和挫伤周围皮层神经元凋亡来改善 TBI。我们建议在急性期给予 AMN082 可能是 TBI 的一个有前途的策略。AMN082治疗显着改善了挫伤周围皮层中3-硝基酪氨酸和诱导型一氧化氮合酶的表达。同时,AMN082 增加了神经元细胞中 NR2A 和 NR2B 的表达。我们得出结论,腹腔内注射 AMN082 3 天可通过减轻谷氨酸受体相关的亚硝化应激和挫伤周围皮层神经元凋亡来改善 TBI。我们建议在急性期给予 AMN082 可能是 TBI 的一个有前途的策略。AMN082治疗显着改善了挫伤周围皮层中3-硝基酪氨酸和诱导型一氧化氮合酶的表达。同时,AMN082 增加了神经元细胞中 NR2A 和 NR2B 的表达。我们得出结论,腹腔内注射 AMN082 3 天可通过减轻谷氨酸受体相关的亚硝化应激和挫伤周围皮层神经元凋亡来改善 TBI。我们建议在急性期给予 AMN082 可能是 TBI 的一个有前途的策略。我们得出结论,腹腔内注射 AMN082 3 天可通过减轻谷氨酸受体相关的亚硝化应激和挫伤周围皮层神经元凋亡来改善 TBI。我们建议在急性期给予 AMN082 可能是 TBI 的一个有前途的策略。我们得出结论,腹腔内注射 AMN082 3 天可通过减轻谷氨酸受体相关的亚硝化应激和挫伤周围皮层神经元凋亡来改善 TBI。我们建议在急性期给予 AMN082 可能是 TBI 的一个有前途的策略。
更新日期:2021-06-25
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