顺铂联合唑来膦酸对肺癌A549细胞增殖的影响及其机制

目的 观察顺铂联合唑来膦酸对肺癌A-549细胞增殖的影响并探讨其作用机制.方法 以噻唑蓝(MTT)比色法观察顺铂联合唑来膦酸对A549细胞增殖的影响,以Annexin-V/PI双染法检测细胞凋亡,逆转录-聚合酶链反应(RT-PCR)检测DNA损伤检查点蛋白调节因子1(MDC1)mRNA的表达.结果 顺铂联合唑来膦酸对A549细胞增殖的抑制率(39.16±4.94)％高于顺铂(16.87±2.50)％、唑来膦酸(19.66±4.57)％;联合用药诱导A549细胞的凋亡率(32.30±0.50)％较顺铂(23.90±2.46)％、唑来膦酸(18.87±3.04)％上升;联合用药后A549细胞MDC1 mRNA的相对表达水平(0.134 ±0.037)较顺铂(0.356±0.033)、唑来膦酸(0.208 ±0.040)下降,差异均有统计学意义(P＜0.05).结论 顺铂、唑来膦酸可抑制肺癌A549细胞的增殖,诱导其凋亡;顺铂联合唑来膦酸抑制A549细胞的增殖具有协同作用;其协同作用可能与下调MDCl mRNA表达有关.     

cNO-pN2非小细胞肺癌行全胸腔镜肺叶切除手术初步体会

目的 探讨术前临床分期N0术后病理分期N2的非小细胞肺癌患者行全胸腔镜肺叶切除手术的可行性。方法 2006年9月至2010年1月施行全胸腔镜肺叶切除治疗非小细胞肺癌216例中术前临床分期N0患者206例,男103例,女103例;年龄29 ～85岁,平均(62.3±11.1)岁。按术后病理纵隔淋巴结是否转移分为Pn0组(168例,无纵隔淋巴结转移)和Pn2组(38例,存在纵隔淋巴结转移)。回顾性分析两组病例年龄、性别、肿瘤大小、位置、病理类型、分化程度、中转开胸、手术时间、术中出血、淋巴结清扫情况、引流时间、住院时间及并发症等围手术期数据。结果 206例中肺叶切除203例,复合肺叶切除2例,全肺切除1例,手术过程顺利。无严重围手术期并发症,围手术期死亡1例(肺部感染至呼吸功能衰竭)。两组年龄、性别分布差异无统计学意义。Pn0组肿瘤最大径明显小于Pn2组[(2.6±1.6)cm对(3.7±1.9) cm,P=0.001]。Pn0组肿瘤位于下叶者明显少于Pn2组(31.0％对50.0％,P =0.026)。两组腺癌比例无统计学意义(82.7％对73.7％,P=0.181),但Pn0组低分化癌比例明显低于Pn2组(19.0％对42.1％,P=0.002)。两组中转开胸率(7.1％对7.9％,P=1.000)、手术时间[(196.1±53.7) rmin对(208.6±56.8)min,P=0.202]、术中出血量[(253.2±247.9) ml对(279.0±183.3) ml,P=0.475]、术后引流时间[(7.7±3.2)天对(9.7±6.3)天,P=0.066]、住院时间[(10.6±4.6)天对(13.0±7.6)天,P=0.063]、并发症发生率(12.5％对21.1％,P=0.171)组间和纵隔淋巴结清扫站数[(3.1±1.2)对(3.3±1.1),P=0.237],差异无统计学意义。Pn0组纵隔淋巴结清扫枚数少于Pn2组[(9.9±6.8)对(12.7±8.4)枚,P=0.038]。结论 术前N0分期术后病理N2分期的非小细胞肺癌患者行全胸腔镜肺叶切除手术是安全可行的。     

支气管内超声引导针吸活检术的麻醉方法

目的 观察支气管内超声引导针吸活检术(EBUS-TBNA)的不同麻醉方法的效果,寻求较佳的EBUS-TBNA手术麻醉方法.方法 60例择期EBUS-TBNA手术患者,ASA Ⅰ～Ⅱ级,随机分为3组:舒芬太尼组(S组)、瑞芬太尼组(R组)和舒芬太尼+瑞芬太尼组(SR组),每组20例.麻醉方式采用静脉输注丙泊酚全麻复合TCI舒芬太尼和或瑞芬太尼辅助2％利多卡因局部表面麻醉,术中维持双频谱指数( BIS)50 ～60.记录患者进入手术室后5min(T0)、手术开始后30min( T1)和术毕定向力恢复时(T2)心率、平均动脉压、脉搏氧饱和度及呼吸频率、手术开始后30min动脉血气、术中呛咳次数、丙泊酚和利多卡因用量、术毕至定向力恢复时间、患者满意度和不良反应发生情况.结果 (1)R组T1时呼吸频率下降明显(P＜0.05),S组和R组动脉二氧化碳分压高于SR组(P＜0.05).(2)R组和SR组术中呛咳次数、术毕至定向力恢复时间明显减少(与S组比,P＜0.05).(3)三组患者丙泊酚、利多卡因用量、麻醉满意度及不良反应差异无统计学意义(P＞0.05).结论 静脉输注小剂量舒芬太尼与瑞芬太尼,同时复合丙泊酚静脉全麻并辅助局部麻醉可以满足EBUS-TBNA的手术要求,安全、有效,可作为EBUS-TBNA的常规麻醉方法之一.     

辛伐他汀对人肺泡Ⅱ型细胞缺氧复氧损伤的逆转

目的 探讨辛伐他汀在体外对肺泡Ⅱ型细胞( ATⅡ)缺氧复氧损伤的保护作用及其机制.方法以人ATⅡ来源的A549细胞株为对象,应用化学性缺氧模拟剂CoCl2建立体外缺氧复氧损伤模型.研究分为空白组、对照组及不同剂量辛伐他汀治疗组(5、10、20、30、50、100μmol/L).应用CCK-8 比色法检测细胞增殖率;AV/PI流式细胞双染检测细胞凋亡率;Western blot法检测ATⅡ特异性标志表面蛋白C(SP-C)和增殖细胞核抗原(PCNA)的蛋白表达水平.结果 与对照组相比,在A549细胞缺氧前应用低剂量辛伐他汀(5～20 μmol/L)预处理30 min,可促进A549细胞的增殖并显著抑制CoCl2引起的凋亡,同时显著增加SP-C和PCNA的蛋白表达;而高剂量辛伐他汀组(50～ 100 μmol/L)并没有观察到促进增殖、抑制凋亡的保护作用.给予L-甲羟戊酸竞争性抑制辛伐他汀,可逆转辛伐他汀对ATⅡ细胞的保护作用.结论 低剂量辛伐他汀可逆转ATⅡ细胞缺氧复氧损伤,其保护机制与抑制甲羟戊酸代谢通路相关.     

甲状腺癌颈淋巴结清扫术后淋巴瘘的防治:附九例报道

目的 探讨甲状腺癌颈淋巴结清扫术后淋巴瘘的防治措施.方法 回顾性分析吉林大学中日联谊医院2004年1月至2009年4月9例颈清扫术后淋巴瘘患者的临床资料.结果 9例患者中表现为左侧乳糜瘘3例,右侧乳糜瘘1例,乳糜胸1例,颈部淋巴瘘伴胸腔淋巴积液1例,其他3例均为淡黄色淋巴液,均通过保守治疗治愈.结论 熟悉颈部淋巴管道的...     

RNA干扰下调p53抑制因子iASPP表达对膀胱癌细胞的影响

Objective To discuss the effects of silencing of iASPP gene on human bladder cancer cells. Methods RNAi silencing of iASPP gene in bladder cancer cell 5637 and T24 cells were used by lentiviral mediated interfering short hairpin RNAs. Cell proliferation was tested by MTT assay, and rate of colony was tested by colony formation assay. Cell cycles were tested by using fluorescence-activated cell sorting. Results Down-regulation of iASPP could inhibit the growth and proliferation of human bladder cancer cells (P＜0.05). iASPP know-down could decrease the colony formation of 5637 and T24 cells (P＜0, 05). Knocking down of iASPP in 5637 and T24 cells showed cell arrested at G1. Conclusions Silencing of iASPP gene could inhibit proliferation and colony formation of bladder cancer, iASPP might be an important target for gene therapy of bladder cancer.     

克氏针固定治疗儿童肱骨髁上骨折不同进针方式的比较

Objective To compare the treatment outcomes of techniques of K-wire fixation for treatment of supracondylar humeral fractures in children and provide guidelines for selection of internal fixation methods for humeral supracondylar fractures in children.Methods Sixty-four cases d humeral supracondlylar fractures in children were treated by K-wire internal fixation from January 2004 to January 2009.They were divided into 2 groups, with similar fracure types distributed to each group.Group one (crisscross K-wire fixation) contained 38 cases among which 21 were Gartlad Ⅱ fractures and 17 were Gartland Ⅲ fractures.Group two (lateral parallel K-wire fixation) cases contained 26 cases among which 18 cases were Gartland Ⅱ fractures and 8 cases were Garland Ⅲ fractures.Postoperative elbow functions were evaluated and compared between the two groups.Statistical analysis of the excellent-good rate was carried out.Results Postoperatively all 64 patients were follow-up for 6 to 54 moths (average 26 months).The excellent-good rate of elbow fiuctions in group one and two was 92.1% and 84.6%, respectively.There was no significant difference in functional recovery between the two fixation methods (P＞ 0.05).However ulnar nerve injury occurred in 4 cases of the crisscross K-wire insertion group, while none occurred in the lateral parallel K-wire insertion group.Conclusion Crisscross and lateral parallel K-wire fixation have similar clinical outcomes in treating humeral supracondylar fiactures in children.Lateral parallel K-wire fixation technique is simpler and can avoid the risk of iatrogenic ulnar nerve injury.It therefore is an effective method to treat Gartland Ⅱ and Ⅲ supracondylar humerus fractures.     

线粒体型天门冬氨酸氨基转移酶在大鼠肝移植术后的变化意义

目的 探讨线粒体型天门冬氨酸氨基转移酶(m-ASI)以及m-AST与天门冬氨酸氨基转移酶(AST)比值在大鼠自体原位肝移植手术中的变化意义.方法 采用大鼠门静脉灌注的自体原位肝移植模型,A组:自体原位肝移植组;B组:正常大鼠假手术对照组.测定两组大鼠术后各时间段血清中m-AST、AST及ALT,计算出m-AST/AST...     

烧伤并存吸入性损伤患者早期切痂植皮术的麻醉护理配合

对78例烧伤并存吸入性损伤患者行早期切痂植皮术,加强麻醉期的护理配合。结果本组患者术中麻醉安全,均顺利完成手术,术中无死亡病例;手术一次切痂面积为(31.5±6.0)%,手术时间(112.5±35.1)min。提出麻醉期间保持呼吸道通畅,改善患者呼吸功能,及时纠正低氧血症;严密观察患者生命体征变化,观察麻醉药物毒性反应并及时处理;加强液体管理,做好麻醉恢复期的护理,可保证患者麻醉安全,顺利完成手术。     

Modified total en bloc spondylectomy in thoracic vertebra tumour

Total en bloc spondylectomy (TES) for vertebral tumour was previously reported by Tomita through a single posterior approach using a T-saw. A modified total en bloc spondylectomy (MTES) technique is reported in the present study. The disc puncture needle with a sleeve was used to obliquely puncture from the posterior to the anterior direction. A T-saw was inserted through the sleeve and led out to the operator’s side by the leading clamp. The disc was partially cut with the saw from its medial to lateral aspect. After a spinal fixation rod was applied on the operator’s side, the residual discs on the opposite side were cut as described above. Six patients with thoracic vertebral tumours were operated on using the MTES technique. Five patients showed improvement in their neurological deficits postoperatively. There was no evidence of tumour recurrence at the final follow-up. The MTES is technically feasible with improved practicality and safety.