Medialization thyroplasty or injection laryngoplasty for unilateral vocal fold paralysis cannot restore mobility of the vocal fold. Recent studies have shown that transplantation of mesenchymal stem cells is effective...Medialization thyroplasty or injection laryngoplasty for unilateral vocal fold paralysis cannot restore mobility of the vocal fold. Recent studies have shown that transplantation of mesenchymal stem cells is effective in the repair of nerve injuries. This study investigated wheth- er adipose-derived stem celt transplantation could repair recurrent laryngeal nerve injury. Rat models of recurrent laryngeal nerve injury were established by crushing with micro forceps. Adipose-derived mesenchymal stem cells （ADSCs; 8 ×105） or differentiated Schwann-like adipose-derived mesenchymal stem cells （dADSCs; 8×105） or extracellular matrix were injected at the site of injury. At 2, 4 and 6 weeks post-surgery, a higher density of myelinated nerve fiber, thicker myelin sheath, improved vocal fold movement, better recovery of nerve conduction capacity and reduced thyroarytenoid muscle atrophy were found in ADSCs and dADSCs groups compared with the extracellu- lar matrix group. The effects were more pronounced in the ADSCs group than in the dADSCs group. These experimental results indicated that ADSCs transplantation could be an early interventional strategy to promote regeneration after recurrent laryngeal nerve injury.展开更多
目的探讨右美托咪定(DEX)复合颈丛阻滞在甲状腺手术患者麻醉中的应用效果。方法选择择期行甲状腺手术患者100例,随机分DEX组和对照组各50例。DEX组以30μg DEX 1 m L、对照组以生理盐水1 m L分别与0.375%左布比卡因29 m L复合,均在超声...目的探讨右美托咪定(DEX)复合颈丛阻滞在甲状腺手术患者麻醉中的应用效果。方法选择择期行甲状腺手术患者100例,随机分DEX组和对照组各50例。DEX组以30μg DEX 1 m L、对照组以生理盐水1 m L分别与0.375%左布比卡因29 m L复合,均在超声引导下行双侧C4浅颈丛阻滞和单侧C3、C4深颈丛阻滞。DEX组以DEX 3μg/(kg·h)静脉持续泵注10 min后,0.2μg/(kg·h)维持静脉输注至术毕;对照组以等量生理盐水、以与DEX相同的速率持续静脉输注至术毕。于麻醉前(T0)、切皮时(T1)、甲状腺分离时(T2)、缝皮时(T3),采用Ramsay镇静评分(RSS)和视觉模拟评分(VAS)分别进行镇静、镇痛评分。采用无创血压、心电监测以及心率变异性(HRV)分析仪分别监测平均动脉压(MAP)、心率(HR)以及HRV频域参数,包括低频功率(LFP)、高频功率(HFP)、比率(LFP/HFP)、总功率(TP)。在颈丛阻滞完成后用棉签测定颈丛阻滞起效时间(CPBT)。采用患者术中配合评分(PICS)评价患者术中配合发音。结果两组T1~T3时RSS、VAS均高于T0时(P均<0.05)。DEX组T1~T3时RSS均高于对照组,VAS均低于对照组(P均<0.05)。DEX组CPBT短于对照组(P<0.01),PICS高于对照组(P<0.01)。DEX组T1~T3时HR、MAP均低于对照组(P均<0.05)。DEX组T1~T3时LFP、HFP、LFP/HFP及TP均高于对照组(P均<0.05)。结论 DEX复合颈丛阻滞能提高术中镇痛效果,提高患者术中配合发音,降低术中喉返神经损伤风险,并能维持血流动力学和HRV稳定,抑制术中应激反应,安全性较高。展开更多
基金supported by the National Natural Science Foundation of China,No.81470680,81170901the Natural Science Foundation of Beijing of China,No.7132053the Beijing Health Foundation of High-level Technical Personnel in China,No.2014-2-004
文摘Medialization thyroplasty or injection laryngoplasty for unilateral vocal fold paralysis cannot restore mobility of the vocal fold. Recent studies have shown that transplantation of mesenchymal stem cells is effective in the repair of nerve injuries. This study investigated wheth- er adipose-derived stem celt transplantation could repair recurrent laryngeal nerve injury. Rat models of recurrent laryngeal nerve injury were established by crushing with micro forceps. Adipose-derived mesenchymal stem cells （ADSCs; 8 ×105） or differentiated Schwann-like adipose-derived mesenchymal stem cells （dADSCs; 8×105） or extracellular matrix were injected at the site of injury. At 2, 4 and 6 weeks post-surgery, a higher density of myelinated nerve fiber, thicker myelin sheath, improved vocal fold movement, better recovery of nerve conduction capacity and reduced thyroarytenoid muscle atrophy were found in ADSCs and dADSCs groups compared with the extracellu- lar matrix group. The effects were more pronounced in the ADSCs group than in the dADSCs group. These experimental results indicated that ADSCs transplantation could be an early interventional strategy to promote regeneration after recurrent laryngeal nerve injury.
文摘目的探讨右美托咪定(DEX)复合颈丛阻滞在甲状腺手术患者麻醉中的应用效果。方法选择择期行甲状腺手术患者100例,随机分DEX组和对照组各50例。DEX组以30μg DEX 1 m L、对照组以生理盐水1 m L分别与0.375%左布比卡因29 m L复合,均在超声引导下行双侧C4浅颈丛阻滞和单侧C3、C4深颈丛阻滞。DEX组以DEX 3μg/(kg·h)静脉持续泵注10 min后,0.2μg/(kg·h)维持静脉输注至术毕;对照组以等量生理盐水、以与DEX相同的速率持续静脉输注至术毕。于麻醉前(T0)、切皮时(T1)、甲状腺分离时(T2)、缝皮时(T3),采用Ramsay镇静评分(RSS)和视觉模拟评分(VAS)分别进行镇静、镇痛评分。采用无创血压、心电监测以及心率变异性(HRV)分析仪分别监测平均动脉压(MAP)、心率(HR)以及HRV频域参数,包括低频功率(LFP)、高频功率(HFP)、比率(LFP/HFP)、总功率(TP)。在颈丛阻滞完成后用棉签测定颈丛阻滞起效时间(CPBT)。采用患者术中配合评分(PICS)评价患者术中配合发音。结果两组T1~T3时RSS、VAS均高于T0时(P均<0.05)。DEX组T1~T3时RSS均高于对照组,VAS均低于对照组(P均<0.05)。DEX组CPBT短于对照组(P<0.01),PICS高于对照组(P<0.01)。DEX组T1~T3时HR、MAP均低于对照组(P均<0.05)。DEX组T1~T3时LFP、HFP、LFP/HFP及TP均高于对照组(P均<0.05)。结论 DEX复合颈丛阻滞能提高术中镇痛效果,提高患者术中配合发音,降低术中喉返神经损伤风险,并能维持血流动力学和HRV稳定,抑制术中应激反应,安全性较高。
