《中国康复理论与实践》 ›› 2021, Vol. 27 ›› Issue (11): 1272-1281.doi: 10.3969/j.issn.1006-9771.2021.11.006
收稿日期:
2021-06-05
修回日期:
2021-07-28
出版日期:
2021-11-25
发布日期:
2021-12-03
通讯作者:
叶超群
E-mail:yechaoqun@sina.com
作者简介:
凌梦钰(1994-),女,汉族,安徽合肥市人,硕士研究生,主要研究方向:康复医学与理疗学。|叶超群,博士,主任医师、教授。
基金资助:
LING Meng-yu1,2,YANG Yi-zhuo2,LIU Shuai2,YE Chao-qun1,2()
Received:
2021-06-05
Revised:
2021-07-28
Published:
2021-11-25
Online:
2021-12-03
Contact:
YE Chao-qun
E-mail:yechaoqun@sina.com
Supported by:
摘要:
目的 观察运动训练对脑缺血再灌注损伤大鼠认知功能及前额皮层神经元核抗原(NeuN)和突触素1 (SynapsinI)表达的影响,探究运动对缺血再灌注后认知功能改善的机制。方法 雄性Sprague-Dawley大鼠40只随机数字表法分成假手术组(S组)、模型组(M组)、假手术跑台组(SE组)和模型跑台组(ME组),每组10只。线栓法制备左侧大脑中动脉栓塞1 h再灌注模型,SE组和ME组行跑台训练14 d。训练后,采用旷场实验和新物体识别实验评价大鼠认知功能;尼氏染色和免疫荧光染色观察大鼠前额皮质中神经细胞的数量及分布情况,通过ELISA观察血清SynapsinI表达。结果 与S组相比,M组旷场实验活跃度、穿格次数、总距离、中央区域活动时间,新物体识别实验认知指数和总距离均下降(P < 0.05);与M组相比,ME组旷场实验活跃度、穿格次数、总距离、中央区域活动时间及新物体识别实验认知指数和总距离均提高(P < 0.05)。M组较S组尼氏体计数减少(P < 0.05),排列紊乱;ME组较M组尼氏体数量增多(P < 0.05);M组NeuN阳性细胞数表达较S组降低(P < 0.05),ME组较M组增加(P < 0.05);M组SynapsinI阳性细胞数较S组降低(P < 0.05),ME组较M组增加(P < 0.05);M组血清SynapsinI表达较S组降低(P < 0.05),ME组较M组增加(P < 0.05);行为学实验结果多与尼氏体、NeuN、SynapsinI表达量呈正相关(r > 0.221, P < 0.05)。结论 脑缺血再灌注会导致大鼠认知功能损伤,运动训练能减轻神经损伤,改善认知功能,可能与促进NeuN和SynapsinI表达,增加前额皮质神经元和突触数量有关。
凌梦钰,杨一卓,刘帅,叶超群. 运动训练对脑缺血再灌注大鼠认知功能及前额皮层神经元核抗原和突触素1表达的效果[J]. 《中国康复理论与实践》, 2021, 27(11): 1272-1281.
LING Meng-yu,YANG Yi-zhuo,LIU Shuai,YE Chao-qun. Effect of Exercise on Expression of NeuN and SynapsinI in Cortex and Cognitive Function in Rats after Cerebral Ischemia-reperfusion[J]. 《Chinese Journal of Rehabilitation Theory and Practice》, 2021, 27(11): 1272-1281.
表2
术后各组各时间点Longa评分"
组别 | 1 d | 3 d | 7 d | 10 d | 14 d | 17 d | F值 | P值 |
---|---|---|---|---|---|---|---|---|
S组 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
SE组 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
M组 | 1.88±0.64 | 2.25±0.46 | 2.13±0.35 | 1.75±0.71 | 1.13±0.35 | 0.75±0.46 | 6.298 | 0.004 |
ME组 | 1.86±0.71 | 2.09±1.22 | 1.46±0.69 | 0.91±0.54 | 0.55±0.52 | 0.27±0.47 | 11.257 | < 0.001 |
F值a | 0.056 | 0.121 | 6.318 | 8.687 | 7.341 | 4.871 | ||
P值a | 0.99 | 0.815 | 0.022 | 0.009 | 0.015 | 0.041 |
表3
各组各时间点体质量变化(g)"
组别 | n | 术前 | 3 d | 7 d | 10 d | 14 d | 17 d | F值 | P值 |
---|---|---|---|---|---|---|---|---|---|
S组 | 10 | 215.4±3.6 | 234.7±6.1 | 260.5±5.4 | 282.3±7.7 | 312.3±11.6 | 343.4±14.2 | 145.358 | < 0.001 |
SE组 | 10 | 216.7±3.1 | 232.3±4.8 | 268.4±6.4 | 288.3±8.7 | 318.5±10.5 | 349.0±11.5 | 195.322 | < 0.001 |
M组 | 10 | 215.9±2.9 | 203.0±22.8a | 219.8±26.1a | 237.1±29.3a | 256.4±32.2a | 289.2±34.5a | 9.343 | < 0.001 |
ME组 | 10 | 218.1±2.5 | 204.0±18.1 | 229.2±19.1 | 248.2±23.6b | 280.1±28.2b | 312.4±29.0b | 18.811 | < 0.001 |
F值 | 0.739 | 9.961 | 14.996 | 10.781 | 9.452 | 9.475 | |||
P值 | 0.544 | 0.001 | < 0.001 | < 0.001 | 0.001 | 0.001 |
表5
运动训练后各组旷场实验结果"
组别 | n | 活跃度 | 穿格次数 | 总距离(mm) | 中央区域活动时间(s) |
---|---|---|---|---|---|
S组 | 10 | 29.79±3.86 | 55.83±7.20 | 2788.56±433.86 | 4.89±1.24 |
SE组 | 10 | 43.14±7.10a | 58.17±9.82 | 2977.66±225.81a | 7.92±1.76a |
M组 | 10 | 12.71±2.55a | 23.83±11.60a | 1319.33±447.95a | 1.11±0.94a |
ME组 | 10 | 26.07±1.42b | 50.67±20.70b | 2746.01±616.79b | 4.06±1.41b |
F值 | 42.222 | 7.056 | 14.294 | 25.067 | |
P值 | < 0.001 | 0.002 | < 0.001 | < 0.001 |
表10
认知功能相关指标与NeuN、SynapsinI之间的相关性(r)"
项目 | 穿格次数 | 总距离 | 中央区域活动时间 | 认知指数 | 尼氏体计数 | NeuN | SynapsinI | 血清SynapsinI |
---|---|---|---|---|---|---|---|---|
活跃度 | 0.611a | 0.731c | 0.882c | 0.830c | 0.855c | 0.221b | 0.720b | 0.362c |
穿格次数 | - | 0.932c | 0.622b | 0.725c | 0.547a | 0.060a | 0.721c | 0.548a |
总距离 | - | 0.664b | 0.836c | 0.651b | 0.620a | 0.831c | 0.603b | |
中央区域活动时间 | - | 0.821c | 0.814c | 0.219 | 0.685b | 0.301a | ||
认知指数 | - | 0.835c | 0.580a | 0.891c | 0.613b | |||
尼氏体计数 | - | 0.338b | 0.631a | 0.270 | ||||
NeuN | - | 0.320a | 0.739c | |||||
SynapsinI | - | 0.761c |
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