长期耐力训练大鼠肾组织不同功能状态下一氧化氮与一氧化氮合酶体系变化

目的研究长期耐力训练对雄性大鼠肾组织一氧化氮(NO)、一氧化氮合酶(NOS)的影响.方法64只雄性Wistar大鼠随机分为2组:对照组和耐力组.每组32只.耐力组进行8周跑台训练,对照组一直笼中饲养不训练.耐力组8周训练结束后,对照组和耐力组2组大鼠分别在直径70 cm的圆形塑料桶中进行2天适应性游泳,水深55 cm,水温32℃,每天15 min.第3天,两组大鼠分别于安静、游泳40 min、游泳力竭即刻、力竭后恢复24 h,4种状态麻醉处死取材,每种状态8只大鼠.安静状态大鼠不进行游泳直接取材,其余状态大鼠尾部负重3%体重的铅条,在圆形塑料桶中进行游泳.游泳40 min状态大鼠统一在游泳至40 min后取材.游泳力竭即刻状态大鼠统一在游泳至力竭即刻取材.力竭后恢复24 h状态大鼠从被确定为力竭后计时,经过24 h后取材.测定NO含量和NOS活性.结果耐力组与对照组相比,力竭即刻状态,耐力组NO含量极显著升高(P0.01);在24 h恢复后,耐力组NO含量极显著升高(P0.01).游泳40 min状态,耐力组NOS活性极显著降低(P0.01);力竭即刻状态,耐力组NOS活性显著降低(P0.05);在24 h恢复后,耐力组NOS活性极显著升高(P0.01).结论长期耐力训练增加了力竭即刻肾组织的NO含量,减轻缺血症状,增加了24h恢复期NO含量;长期耐力训练减小了运动过程中和力竭即刻肾组织NOS活性的升高幅度;增加了24 h恢复期NOS活性,对肾组织再灌注期的恢复有积极意义.

Changes of NO and NOS of Rat of The Long-term Endurance Training in Different Functional States

In this paper,the long-term endurance training on the male rat renal tissue nitric oxide(NO),nitric oxide synthase(NOS) effects are studied.64 male Wistar rats were randomly divided into two groups: controlling group and the endurance group.32 in each group.Endurance group 8 weeks treadmill training,the control group had no training in rearing cages.8-week endurance training group after the end of the control group and the endurance group 2 rats were 70 cm in diameter round plastic bucket for two days adapt...