解剖学报 ›› 2017, Vol. 48 ›› Issue (1): 1-6.doi: 10.16098/j.issn.0529-1356.2017.01.001

• 神经生物学 •    下一篇

白藜芦醇预处理对大鼠皮质神经元氧糖剥夺/再复氧损伤后神经元突起生长的影响

唐凡人 余萍萍 王莉 郭霜 杨琴*   

  1. 重庆医科大学附属第一医院神经内科,重庆 400016
  • 收稿日期:2016-07-01 修回日期:2016-09-01 出版日期:2017-02-06 发布日期:2017-02-06
  • 通讯作者: 杨琴 E-mail:xyqh200@126.com

Effects of resveratrol pretreatment on neurite growth of primary cortical neurons after oxygen-glucose deprivation/reperfusion injury in rats

TANG Fan-ren YU Ping-ping WANG Li GUO Shuang YANG Qin*   

  1. Department of Neurology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
  • Received:2016-07-01 Revised:2016-09-01 Online:2017-02-06 Published:2017-02-06
  • Contact: YANG Qin E-mail:xyqh200@126.com

摘要:

目的 探讨白藜芦醇预处理对大鼠皮质神经元氧糖剥夺/再复氧损伤后神经元突起生长的影响。方法 体外皮质神经元氧糖剥夺150min,复氧培养24 h。实验分为正常组、对照组和5μmol/L白藜芦醇预处理组。免疫荧光法鉴定神经元,细胞计数试剂盒8(CCK-8)法测定细胞活力,TUNEL法检测细胞凋亡,免疫荧光法和Western blotting检测微管相关蛋白2(MAP-2)和生长相关蛋白43(GAP-43)的表达,并计数神经元突起的长度和数目。结果 培养细胞均高表达神经元特异性标记物MAP-2。白藜芦醇组细胞活力较对照组明显增加(0.551±0.009 比 0.436±0.013, P<0.01),而凋亡则明显降低(18.3%±1.3% 比35.3%±1.9%, P<0.01),上调MAP-2(0.790±0.102 比 0.462±0.063, P<0.01)和GAP-43(0.768±0.084 比 0.424±0.065,P<0.01)蛋白的表达,增加神经元突起的长度(89.510±6.939 比 61.538±9.14,P<0.01)和数目(6.347±1.002 比 3.040±0.608,P<0.01)。结论 白藜芦醇预处理能减轻氧糖剥夺/再复氧对神经元的损伤,促进神经元突起的生长。

关键词: 白藜芦醇, 神经保护, 神经突起, 氧糖剥夺/再复氧, 免疫印迹法, 大鼠

Abstract:

Objective To investigate the effects of resveratrol pretreatment on neurite growth of rat primary cortical neurons after oxygen-glucose deprivation/reperfusion (OGD/R) injury in vitro. Methods Primary cortical neurons were cultured under oxygen and glucose deprivation for 150 minutes and reoxygenation for 24 hours. The study had the normal, control and 5μmol /L resveratrol pretreatment groups. Neurons were identified with immunofluorescence. Cell viability was detected with cell counting kit-8(CCK-8) assay. Cell apoptosis was detected with TUNEL assay. Immunofluorescence and Western blotting measured the expressions of microtubule-associated protein 2(MAP-2)and growth associated protein 43(GAP-43), and the length and number of neurites were counted.
Results Cells had high expression of neuronal specific marker MAP-2. Compared with the control group, resveratrol treatment significantly enhanced the neurons viability (0.551±0.009 vs 0.436±0.013,P<0.01), decreased the numbers of apoptosis (18.3%±1.3% vs 35.3%±1.9%,P<0.01), upregulated the expressions of MAP-2 (0.790±0.102 vs 0.462±0.063,P<0.01) and GAP-43 (0.768±0.084 vs 0.424±0.065,P<0.01) proteins, increased the length (89.510±6.939 vs 61.538±9.14,P<0.01) and numbers (6.347±1.002 vs 3.040±0.608,P<0.01) of neurites. Conclusion Resveratrol pretreatment can reduce injury and promote neurite growth of cultured neurons after OGD/R.

Key words: Resveratrol, Neuroprotection, Neurite, Oxygen-glucose deprivation/reoxygenation, Western blotting, Rat