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作 者:张兢[1] 顾小萍[2] 程崇学[2] 马正良[2]
机构地区:[1]南京大学医学院附属鼓楼医院麻醉科,210008 [2]南京大学医学院附属鼓楼医院麻醉科
出 处:《国际麻醉学与复苏杂志》2014年第2期134-137,144,共5页International Journal of Anesthesiology and Resuscitation
基 金:国家自然科学基金(30872439/81171047);六大人才高峰(2010117);江苏省自然基金(BK2010105);江苏省卫生厅课题(RC2011006/H200943);南京市卫生局重大课题(zkx08028)
摘 要:目的观察分别鞘内注射钙钙调蛋白依赖性蛋白激酶Ⅱ(Ca2+/calmodulindependentproteinkinaselI.CaMKlI)高效特异性抑制剂KN93或艾芬地尔(Ifenprodil)对瑞芬太尼诱发切口痛大鼠痛觉过敏的镇痛作用。方法sD雄性大鼠30只,按随机数字表法分为5组(每组6只):空白对照组(C组)、切口痛(I组)、瑞芬太尼组(R组)、KN93组(K组)及Ifenprodil组(F组)。除C组外均做切口痛模型,R组、K组及F组制作模型的同时经皮下泵注瑞芬太尼(O.04mg/kg)30min注完。R组、K组及F组术前30min分别鞘内给予10%二甲基亚砜(dimethylsulfoxide,DMSO)20μl、KN9320μl(50μg/10μl)和20仙μl fenprodil(10μg/20μl)。各组分别在术前24h及术后2、6、24、48h检测术侧热缩足潜伏期(pawwithdrawalthermallatencv,PWTL)及机械缩足阈值(pawwithdrawalmechanicalthreshold,PMWT)。结果与c组比较,I组术后手术侧PWTL及PMWT明显降低;与I组比较,R组术后手术侧PWTL及PMWT明显降低;与R组比较,K组术后各时间点PWTL(15.32±0.73)、(15.79±0.32)、(14.86±0.98)、(14.76±0.82)s及PMWT(31.8±1.4)、(29.3±1.2)、(30.8±1.0)、(30.5±1.2)g均明显升高(P〈0.05),F组术后各时间点PWTL(14.24±0.79)、(15.33±0.29)、(15.29±0.74)、(15.21±0.45)S及PMWT(29.3±1.8)、(30.2±2.1)、(29.5±1.5)、(30.2±1.0)g均明显升高(P〈0.05)。结论鞘内注射KN93或Ifenprodil均能够有效缓解瑞芬太尼诱发的痛觉过敏。Objective To investigate the preventive effect of intrathecal KN93 or Ifenprodil administration on remifentanil- induced incisional hyperalgesiaafter surgery iincisional pain in rats. Methods Thirty SD rats were randomly divided into 5 groups (n=6): control group(C group), incision pain group(I group), Remifentanil group(R group), KN93 group(K group) and Ifenprodil group(F group). A hind paw incisional model was used to induce incisional painexcept for control group. At the same time, 0.04 mg/kg remifentanil was infused subcutaneously 30 min in R group, K group and F group, 30 min before incisional model, 20 μl dimethyl sulfoxide (DMSO, 10%), 20μl KN93 (50 μg/10 μl) and 20 μl Ifenprodil (10 μg/20 μl) were intrathecally injected to rats in R group, K group or F group respectively. Paw withdrawal mechanical threshold (PWMT) and paw withdrawal thermal latency (PWTL) were tested on 24 h before and 2, 6, 24, 48 h after operation. Results The PWTL and PMWT on the ipsilateral side significantly decreased after operation in I group compared with C group; and evenshortenin R group than that in I group. Compared with R group, the PWTL(15.32±0.73), (15.79±0.32), (14.86±0.98), (14.76±0.82)s and PMWT (31.8±1.4), (29.3±1.2), (30.8±1.0), (30.5±1.2) g significantly increased in K group (P〈0.05) at each time point. Meanwhile, the PWTL (14.24±0.79), (15.33±0.29), (15.29±0.74), (15.21±0.45) s and PMWT(29.3±1.8), (30.2±2.1), (29.5±1.5), (30.2±1.0) g obviously increased in F group(P〈0.05) at each time point. Conclusions
关 键 词:钙钙调蛋白依赖性激酶Ⅱ N-甲基-D-天冬氨酸受体2B亚型 瑞芬太尼 痛觉过敏 切口痛
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