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| 老龄大鼠行心肺转流术建立长期术后认知功能障碍模型 |
| A long-term postoperative cognitive dysfunction model for aged rats after cardiopulmonary bypass |
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| DOI：10.12089/jca.2016.12.016 |
| 中文关键词: 术后认知功能障碍 术后并发症 模型 心肺转流 老龄大鼠 |
| 英文关键词: Postoperative cognitive dysfunction Postoperative complications Model Car-diopulmonary bypass Aged rats |
| 基金项目:四川省应用基础研究计划项目(2014JC0173) |
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| 中文摘要: |
| 目的：通过在老龄大鼠行脾切除术或心肺转流(CPB)术建立术后认知功能障碍(post-operative cognitive dysfunction,POCD)模型。方法健康雄性 SPF 级 SD 大鼠60只,18月龄,随机分为脾切除术组(A 组)、CPB 术组(B 组)及空白对照组(C 组),每组20只,术后第31~35天进行Morris 水迷宫、穿梭箱实验及旷场实验,评估大鼠认知功能。结果与 C 组比较,B 组穿越原平台次数明显减少[(5.2±2.2)次 vs.(8.6±3.2)次],主动回避反应次数明显减少[(12.3±2.7)次 vs.(15.2±1.8)次],主动回避反应潜伏期明显延长[(9.50±2.31)s vs.(5.14±1.43)s],修饰次数[(13.8±2.6)次 vs.(19.5±2.2)次]、直立次数明显减少[(6.8±1.5)次 vs.(10.2±1.7)次],中央格停留时间明显延长[(7.78±1.51)s vs.(5.34±0.72)s],术后第33~35天逃避潜伏期明显延长(P <0.05)；与 A 组比较,B 组中央格停留时间明显延长[(7.78±1.51)s vs.(6.06±1.67)s,P <0.05]。结论行心肺转流术的老龄大鼠术后长期认知功能损害明显,可作为心血管麻醉后长期术后认知功能障碍研究的动物模型。 |
| 英文摘要: |
| Objective To find a model of long-term postoperative cognitive dysfunction by hav-ing a splenectomy operation or cardiopulmonary bypass.Methods Sixty Sprague-Dawley rats,aged 18 months,were randomly divided into 3 groups (n =20):splenectomy group (group A),cardiopul-monary bypass group (group B)and control group (group C).From 31 st to 35 th days after the opera-tion,the learning and memory capability of rats were observed through the Morris water maze,the Shuttle box text and Open field test.Results Compared with group C,the frequency of crossing the original platform [(5.2±2.2)times vs.(8.6±3.2)times],the times of initiative avoiding were sig-nificantly reduced [(12.3±2.7)times vs.(1 5.2±1.8)times],the latency of the initiative avoiding was significantly prolonged [(9.50±2.31 )s vs.(5.14 ± 1.43 )s],the number of standing on the back legs [(6.8±1.5)times vs.(10.2±1.7)times]and rearing were significantly reduced [(13.8± 2.6)times vs.(1 9.5±2.2)times],and the time that animals spent in the central square [(7.78 ± 1.5 1)s vs.(5.34±0.72)s]and escape latency were significantly prolonged in group B (P <0.05). Compared with group A,the time that animals spent in the central square in group B was significantly prolonged [(7.78±1.5 1)s vs.(6.06 ±1.67)s,P <0.05].Conclusion The model by having car-diopulmonary bypass operation is an ideal model of postoperative cognitive dysfunction after cardio-vascular anesthesia,for the learning and memory capability is remarkably changed. |
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