热疗对肺癌A549细胞周期和凋亡的影响

目的:研究在不同温度、不同加热时间的条件下热疗对人肺腺癌A549细胞生长的影响。方法:不同温度、不同时间加热后,采用流式细胞技术观察热疗对人肺腺癌A549细胞株细胞周期和凋亡的影响。结果:流式细胞技术检测显示A549细胞经热疗处理后,细胞生长相应的滞留于细胞生长周期的G1期,细胞凋亡明显,细胞减少。热疗在不同温度、不同时间加热时间的条件下,导致A549细胞出现凋亡和坏死的程度不同,其中加热至42℃维持2 h处理组中凋亡最为明显。结论:热疗可抑制人肺腺癌A549细胞的增殖,使细胞周期阻滞于G1期,并且在加热至42℃维持2 h时细胞凋亡最为明显。     

中低温度热疗诱导骨肉瘤细胞株凋亡

目的:研究加热诱导成骨肉瘤细胞株(OS-9901)凋亡,为中低温度热疗辅助成骨肉瘤综合治疗提供理论依据. 方法:成骨肉瘤OS-9901细胞株分别经不同温度的热疗作用1 h,用TUNEL法染色及计数、透射电子显微镜观察其对骨肉瘤细胞株的诱导凋亡作用. 同时通过免疫组织化学染色,观察43℃ 1 h热疗对成骨肉瘤细胞株OS-9901的Bcl-2蛋白表达的影响. 结果:43℃作用1 h的成骨肉瘤细胞株继续培养6 h后出现大量异常细胞,透射电镜观察可见有典型的细胞凋亡特征性形态改变. TUNEL法染色后通过计数可见有42%的细胞凋亡比例. 免疫组织化学显示,43℃作用1 h的成骨肉瘤细胞株6 h后Bcl-2蛋白的表达明显减少. 结论:43℃作用1 h可以诱导成骨肉瘤细胞株OS-9901凋亡. 加热后成骨肉瘤细胞Bcl-2表达减少,从而进一步诱导发生细胞凋亡,为热疗诱导肿瘤细胞凋亡的机制提供了部分理论依据.     

热疗对肺癌A549细胞P-糖蛋白表达影响的实验研究

目的研究不同温度、不同加热时间下热疗对肺癌A549细胞P-糖蛋白(P-gp)表达的影响,为肺癌的热疗和热化疗提供理论依据。方法体外复苏与培养肺癌A549细胞;对照组37℃下培养,实验组按不同时间、不同温度分组水浴加热肺癌A549细胞后培养24 h,采用流式细胞术(FCM)观察热处理后的肺癌A549细胞株P-gp表达的变化。结果流式细胞术显示各热疗组A549细胞的P-gp的表达率均较对照组下降,且P-gp的表达率与加热的时间和温度均呈负相关。结论热疗可以抑制P-gp的表达,可能是逆转肿瘤细胞多药耐药的一种手段。     

热疗作用于肝癌细胞株SMMC-7721后几种凋亡相关基因的表达

目的　探讨热疗前后人肝癌SMMC -772 1细胞几种凋亡相关基因的表达情况 ,解释热疗促进肿瘤细胞凋亡的分子机制。方法　采用免疫组化S- P法检测热疗前后肝癌细胞中P5 3、HSP 70、c Myc蛋白的表达情况。结果　各个热处理组与对照相比 ,HSP-70、P5 3、c Myc蛋白的表达均增高 ,有统计学差异 (P <0 .0 1 ) ;42℃加热 1h和2h与加热 3 0min比较HSP 70蛋白的表达增多 ,有统计学意义 (P <0 .0 5 ) ;而P5 3和c Myc蛋白在各个热处理组间表达没有差异。结论　加热可以诱导HSP70蛋白的大量产生 ,可以激活P5 3基因诱导肝癌细胞凋亡 ,上调c- Myc基因 ,通过调节细胞凋亡来提高细胞的热敏感性。     

加热联合紫杉醇对人喉癌细胞Hep-2体外增殖抑制及凋亡的影响

目的 探讨加热(hyperthermia,HT)联合紫杉醇(Taxol)对人喉癌细胞系(Hep-2细胞)体外增殖抑制及凋亡的影响.方法 将Hep-2细胞分为实验组与对照组,实验组用不同浓度(0.1、1.0及10.0μmol/L)的Taxol预处理后联合热疗(39、41及43℃1h)处理不同时间(24、48及72h)后,采用Wright-Gimsa染色法观察Hep-2细胞凋亡的形态学变化;以四甲基偶氮唑盐(MTT)还原试验检测细胞活力,以细胞增殖率作为细胞损伤指标,流式细胞术检测细胞凋亡发生率.结果 加热41℃组细胞增殖率与其他不同温度同剂量组比较均显著降低(P＜0.01);39℃组与对照组37℃组比较差异无统计学意义(P＞0.05);热疗联合Taxol组处理细胞48h后,细胞出现凋亡形态学改变.与热疗和Taxol单药组相比,热疗联合Taxol组对细胞的抑制率显著增强(P＜0.01),其作用呈时间和剂量依赖性;热疗联合Taxol组诱导细胞凋亡率与单药组及单热疗组相比较均增高(P＜0.05);而单药紫杉醇组与单独热疗组之间比较差异无统计学意义(P＞0.05).结论 热疗和Taxol单药体外均可抑制Hep-2细胞增殖并诱导其调亡.热疗和Taxol联合应用对Hep-2细胞体外增殖抑制其诱导凋亡作用显著增强;诱导凋亡可能是细胞增殖抑制的作用机制之一.     

热化疗对Raji细胞体外增敏作用的实验研究

目的 观察热疗联合阿霉素对人B细胞淋巴瘤细胞系Raji细胞内的药物浓度变化及凋亡的影响.方法 MTT法确定阿霉素的工作浓度,以该浓度进行化疗或与热疗的联合,选择温度40℃、41℃及42℃,体外作用于Raji细胞.作用前及48 h采用台盼蓝拒染法检测肿瘤细胞的存活率;MTT法检测肿瘤细胞增殖的抑制作用;流式细胞仪检测肿瘤细胞的凋亡及细胞内药物浓度的变化.观察热疗联合阿霉素的抗肿瘤效果.结果 作用48 h IC50的药物浓度作为实验的工作浓度.热化疗组对Raji细胞有明显的抑制作用(P＜0.01),随着温度的增高而增强;热化疗组细胞内的药物浓度明显增加(P＜0.01).结论 热疗联合阿霉素能增加Raji细胞内的药物浓度,提高肿瘤细胞的凋亡率.     

热疗在阿霉素对KG-1a白血病细胞杀伤作用中的增敏作用

目的观察热疗在阿霉素对人急性髓系白血病细胞株KG-1a细胞杀伤作用中的増敏作用。方法四甲基偶氮唑蓝(MTT)法确定阿霉素的工作浓度,以该浓度进行化学治疗和热疗联合化学治疗,选择温度40、42℃,体外作用于KG-1a细胞。作用前及作用48 h后,采用台盼蓝拒染法检测肿瘤细胞的存活率;MTT法检测对肿瘤细胞增殖的抑制作用;流式细胞仪检测肿瘤细胞凋亡率的变化。结果各处理组的存活率明显要低于对照组(P<0.01),40、42℃热疗联合化学治疗组的细胞存活率明显低于单纯的热疗组(P<0.01)和化学治疗组(P<0.01)。40、42℃热疗联合化学治疗组的细胞抑制率明显高于化学治疗组(P<0.01)和单纯的热疗组(P<0.01)。各处理组的细胞凋亡率明显高于对照组(P<0.01),40、42℃热疗联合化学治疗组细胞凋亡率明显高于化学治疗组(P<0.01)和单纯的热疗组(P<0.01)。结论热疗可以增加阿霉素对KG-1a细胞的杀伤作用,提高肿瘤细胞的凋亡率。     

联合放疗热疗对人宫颈癌HeLa细胞作用的实验研究

目的观察放疗联合热疗时相同放射剂量不同温度和不同持续时间,不同处理顺序及同一处理顺序不同时间间隔对人宫颈癌HeLa细胞杀伤效果的影响。方法对人宫颈癌HeLa细胞进行放疗、热疗及放疗联合热疗处理后绘制生长曲线,计算克隆形成率及抑制率。结果1)热疗43℃持续30 min与42℃持续2 h相比,肿瘤细胞生长抑制率、克隆形成率及克隆形成抑制率的差异无统计学意义(P>0.05)。2)放疗联合热疗对HeLa细胞的抑制作用强于单独应用放疗或热疗(P<0.05)。3)不同处理顺序(放疗后热疗、热疗后放疗)对HeLa细胞抑制率的差异无统计学意义(P>0.05)。4)同一处理顺序、不同时间间隔(30 min、2 h、24 h)对HeLa细胞抑制率的差异无统计学意义(P>0.05)。结论放疗联合热疗比单用放疗或热疗更有效地抑制HeLa细胞生长及克隆形成。相同放射剂量的条件下,采用不同时间间隔放疗后热疗或热疗后放疗对HeLa细胞生长抑制无显著影响。     

加热诱导结肠癌细胞Lovo凋亡的研究

目的：观察加热对人结肠癌细胞株Lovo的凋亡作用。方法：用Hochest33258荧光染色、凝胶电泳和流式细胞术观察不同时间一温度作用下Lovo细胞的变化。结果：不同温度一时间处理的细胞均发生凋亡，出现明显的形态学改变及凋亡特有的亚二倍体峰和DNA梯度。其中43℃处理3、4h和44℃处理1、2h时细胞凋亡最明显，细胞周期也发生变化。结论：加热可诱导人结肠癌细胞株Lovo发生凋亡，并具有一定的周期特异性。     

热疗对人肝癌细胞株HepG2生长影响的体外研究

目的:探讨热疗对人肝癌细胞株HepG2生长的影响.方法:人肝癌细胞株HepG2细胞常规方法培养,采用水浴加热法(43.0℃)分别加热0.5h、1h和1.5h.处理后继续培养48h、72h、96h、120h和144h,绘制生长曲线;处理后分别培养0h、3h、6h、12h和24h,倒置显微镜观察细胞的形态变化.结果:随着加热时间的延长HepG2细胞数明显减少(P＜0.05,P＜0.01),细胞的形态也发生明显病理变化.结论:热疗对人肝癌细胞株具有细胞毒性作用,加热时间对癌细胞的生长有重要影响,热疗作为治疗肝癌的一种辅助疗法,值得进一步研究.     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

Acupuncture Combined with Spinal Tui Na for Treatment of Primary Dysmenorrhea in 30 Cases

Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.     

Luo Lingjie's Experience in Treating Chronic Nephropathy

In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.     

Dr.Zhang Ren's Experience in the Acupuncture Treatment of Different Diseases with the Same Therapeutic Principle

Dr.Zhang Ren,the chief physician,is the chairman of Shanghai Acupuncture and Moxibustion Association.Having been engaged in medicine for about 40 years,he is experienced in treating various intractable diseases.In his long years of clinical practice,he advocates taking the TCM differentiation as the basis to seek for the acupuncture method for treatment of modern intractable diseases.The author of this essay had the fortune to follow Dr.Zhang in study.The following is a summary of Dr.Zhang's experience in the acupuncture treatment for different intractable diseases with the same therapeutic principle.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.