流式细胞术分析微量全血样品荧光间接标记的研究

目的 应用流式细胞术(FCM)建立用于微量全血样品的间接荧光标记染色方法。方法 通过对6种外周血染色方法的比较实验，筛选出一种用于FCM的最佳染色方法。结果 6种染色方法的FCM二维点图和全血样品阳性细胞结果测定基本一致，而微量全血样品间接荧光染色法操作简单、快速、经济实用。结论 我们建立的荧光染色法，是外周血流式细胞样品测定的理想方法，该方法为FCM在临床检验和基础研究的应用提供了实用的技术方法。     

免疫磁珠技术检测大肠癌患者外周血微转移的临床应用研究

目的探讨检测大肠癌患者外周血微转移的免疫磁珠技术的方法及临床意义。方法采集大肠癌患者外周抗凝血5ml,加入6％HKS200／0．5,4℃下静置60min,取上清,加入抗CEA单克隆抗体,在4℃下作用90min,然后室温下与免疫磁珠作用60min,在磁性细胞分离器中静置30min,镜下观察玫瑰花环形成情况,HE染色,进行免疫磁珠技术敏感性测定。结果5ml外周血中的肿瘤细胞可被检测出来,大肠癌患者的阳性检出率为42．5％。结论免疫磁珠技术是一种有效检测肿瘤细胞的方法,可以从大肠癌患者外周血中分离出肿瘤细胞,监测微转移的存在,有助于临床对大肠癌的诊断及治疗。     

反相高效液相色谱法同时测定血清中5种水溶性维生素

目的 建立血清中水溶性维生素B_1(VB_1)、B_6(VB_6)、烟酸、烟酰胺和叶酸的高效液相色谱同时测定方法.方法 取全血40 μL,用200 μL甲醇沉淀蛋白,冰箱冷冻(-18℃)30 min后离心(8000 r/min,8 min),上清液通过固相萃取柱进一步净化,收集洗脱液,50℃水浴中氮气吹至0.20 mL,取50 μL进样色谱柱分析.对样品的固相萃取条件和色谱条件进行优化后,用于测定人血清样品中5种水溶性维生素的含量.结果 优化后的固相萃取条件;固相萃取柱AGT cleanert~(TM) ODSC_(18)柱;洗脱液:甲醇(2.4 mL)-水(0.6 mL)混合液;洗脱流速:0.5 mL/min.本法的色谱分离条件为:分离柱Phenomenex C18 Luna色谱柱(250×4.6 mm,5 μm);柱温:室温(20℃);流动相:0.05 mol/L KH_2PO_4溶液(pH6.0)-甲醇梯度洗脱;流速:0.9 mL/min;紫外检测波长:266 nm.5种水溶性维生素标准曲线的线性范围为0～100 ng,相关系数均大于0.999,相对标准偏差(RSD)小于5%,方法 检出限(信噪比S/N=2)为0.076～0.170 μg/mL,加标回收率为80.2%～115.0%.人血清样品中除烟酰胺未检出外,其余4种均检出.结论 所建立的方法 快速、简便、灵敏、准确,可用于人血清中水溶性维生素VB_1、VB_6、烟酸和叶酸的同时测定,但烟酰胺的检测灵敏度有待提高.     

基于罗丹明B类荧光探针的Fe3+细胞成像研究

目的:构建一种基于罗丹明B为母体的新型荧光探针,考查其作为荧光探针P的光学性能,发展适合于分析检测细胞内Fe3+的可视化成像分析的荧光探针法.方法:RAW细胞中加入20 μmol/LFe3+孵育30 min后,再在该培养液中加入20 μmol/L探针P,37℃下继续孵育30 min,559 nm激发,收集570～670 nm波段内的荧光信号.结果:探针能够实现对细胞内Fe3+的可视化成像分析.结论:本方法探针容易制备,分析速度快,可实现结果的可视化观测.     

白藜芦醇对鼻咽癌细胞株 CNE-2Z 增殖和凋亡的影响

目的　探讨白藜芦醇 (resveratrol,Res)对鼻咽癌细胞株 CNE- 2 Z增殖和凋亡的影响。方法　采用 MTT法检测 IC50 值 ,流式细胞术、Hoechst 332 5 8/PI荧光染色和 DNA琼脂糖凝胶电泳分析细胞凋亡。结果　不同浓度Res分别处理细胞 2 4 ,4 8和 72 h,其 IC50 值分别为 (10 9.2± 7.5 ) ,(83.6± 6 .0 ) ,(5 4 .3± 2 .8) μmol/L,各 IC50 值间比较差异显著 (P<0 .0 1)。2 5 ,5 0 ,10 0和 2 0 0 μm ol/L Res分别处理细胞 2 4 h后 ,5 0 ,10 0 ,2 0 0 μmol/L Res处理组经流式细胞术和荧光染色检测出的细胞凋亡率均明显高于对照组 (P<0 .0 1) ,荧光染色可见典型的凋亡形态学改变 ,10 0 ,2 0 0 μmol/L Res处理组可见明显的 DNA梯带。结论　 Res可通过诱导 CNE- 2 Z细胞株凋亡而抑制其增殖。     

环金属化钯-偶氮配合物应用于致癌物质苯酚和苯胺类化合物的识别

目的:构建一种基于环金属化钯-偶氮配合物为母体的新型光学探针MOP,考查其光学性能,发展适合于识别致癌物质苯酚、苯胺类化合物的比色分析法.方法:pH 7.4磷酸盐缓冲溶液中,光学探针MOP(20 μM)与样品(400 μM)在室温下反应30 min后进行光谱扫描.结果:光学探针可以实现对致癌物质苯酚和苯胺类化合物的分辨性识别.结论:本方法分析速度快,可实现比色分析.     

β-淀粉样蛋白25-35片段诱导PC12细胞凋亡

目的　探讨 β -淀粉样蛋白 2 5 - 35片段 (Aβ2 5-3 5)对体外培养的PC12细胞的毒性作用机制。方法　用四甲基偶氮唑蓝 (MTT)代谢率检测 ,光镜吖啶橙荧光染色术 ,透射电镜以及流式细胞仪技术研究Aβ2 5-3 5损伤PC12细胞的途径。结果　用Aβ2 5-3 5处理PC12细胞 2 4h ,Aβ2 5-3 5剂量依赖性地引起PC12细胞的MTT代谢率减少 ,荧光染色及电镜观察发现经Aβ2 5-3 5处理的PC12细胞表现出凋亡细胞的特征 ,流式细胞仪检测发现 ,对照组 2 0 μmol/L及 5 0 μmol/L的Aβ2 5-3 5组PC12细胞的凋亡率分别为 0 .0 8%± 0 .0 1% ,14 .8%± 1.13% ,2 5 .9%± 2 .34%。结论　Aβ对PC12细胞的损伤主要通过细胞凋亡的途径     

性激素对人脐静脉内皮细胞释放一氧化氮的影响

目的 :探讨性激素单独应用或联合应用对人脐静脉内皮细胞释放一氧化氮 (NitricOxide ,NO)的影响。方法 :取健康产妇分娩后 6h内的脐带内皮细胞进行培养 ,以Griess测定培养液中NO2 含量间接反映NO生成量 ,分别测定加入 0 .0 0 1μmol/L ,0 .1μmol/L和 10 μmol/L的 17β E2 ,P、T刺激细胞 10min、30min、6 0min时NO2 含量 ,以 1ml无钙镁盐液作对照。结果 :与对照组相比 ,17β 雌二醇浓度为 0 .0 0 1μmol/L、0 .1μmol/L、10 μmol /L单独作用于内皮细胞 10min和 30min时 ,培养液中NO含量明显增加 (P <0 .0 5 ) ,但刺激 6 0min时无明显作用 (P >0 .0 5 ) ;与孕激素 (0 .0 0 1μmol/L、0 .10 μmol/L、10 μmol /L)分别联合应用 ,作用于内皮细胞 10min、30min和 6 0min ,都能显著抑制雌激素刺激内皮细胞释放NO(P <0 .0 5 )。不同浓度和作用时间下 ,孕激素和雄激素对内皮细胞释放NO的作用不同。结论 :雌激素能够通过NO途径产生血管舒张作用 ,孕激素可能通过抑制NO的释放而抑制雌激素舒张血管的作用。     

探讨血红蛋白对PCR检测乙型肝炎的影响

目的 :探讨血红蛋白对弱阳性乙型肝炎 (HBV) PCR定量检测结果造成的影响。方法 :采用煮沸法处理血清 ,分别设置阴性对照和阳性对照 (含量 3.0× 10 4 copies/ m L HBV DNA)。取浓度分别为 0 .1μg/ L、0 .5 μg/ L、1.0μg/ L、2 .5 μg/ L、5 .0 μg/ L、2 5 .0 μg/ L、5 0 .0 μg/ L、10 0 .0 μg/ L、5 0 0 .0 μg/ L 的血红蛋白 10 μL 加入管中 ,补充血清 (含3.0× 10 4 copies/ m L HBV DNA)至总体积 4 0 μL。用煮沸法提取 ,荧光定量 PCR检测 HBV DNA。结果 :血清标本中加入血红蛋白浓度 <5 .0 μg/ L 的 HBV DNA PCR结果全为阳性 ,经配对 χ2检验与阳性对照差异无显著性 (P>0 .0 5 )。加入血红蛋白浓度≥ 5 .0μg/ L时出现假阴性 ,经配对χ2 检验与阳性对照的差异有显著性 (P<0 .0 5 )。从各浓度组的变异系数 CV观察 ,血红蛋白浓度越高出现假阴性的机率就越大。结论 :在 HBV DNA PCR检测时 ,应纯化核酸避免血红蛋白对结果造成的影响     

反相高效液相色谱法测定尿液4种肾病标志物

目的:建立糖尿病患者尿液中与肾病相关的非蛋白氮代谢产物(肌酸、肌酐、尿素和尿酸)的反相高效液相色谱分离分析方法. 方法:采用Agilent C18(200 mm×4.6 mm, 内径5 μm)色谱柱,流动相含30%(体积比)甲醇和10 mmol/L,pH 6.86的磷酸缓冲溶液,流速0.9 mL/min,检测波长200 nm,柱温为室温. 结果:在5 min内可对患者尿液中上述4种物质同时进行测定,样品前处理简单,重现性较好(迁移时间和峰面积的RSD均≤3%),线性范围较宽(肌酸:5～300 μmol/L, 肌酐:10～200 μmol/L, 尿素:1～30 mmol/L, 尿酸:10～1500 μmol/L). 结论:此法完全适用于临床上患者尿液的日常分析和早期肾病的监测.     

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…     

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.     

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.     

猪肺磷脂注射液联合经鼻持续气道正压通气对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性的影响

目的 探讨猪肺磷脂注射液联合经鼻持续气道正压通气(NCPAP)对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性(CK-MB)的影响.方法 选取呼吸衰竭早产儿80例,分为观察组和对照组各40例.对照组采用NCPAP给氧治疗,观察组给予NCPAP给氧联合猪肺磷脂气管内给药.观察两组患儿治疗前及治疗12h、24 h后PaO2、PaCO2、血氧饱和度(SaO2)、pH的变化情况,检测治疗前及治疗5d后血清CK-MB水平;评估两组患儿的临床治疗效果.结果 两组患儿PaO2、PaCO2、SaO2、pH比较,差异均有统计学意义(P＜0.05),其中观察组治疗后的PaO2、SaO2、pH均高于对照组,PaCO2则低于对照组.两组的PaO2、SaO2、pH均随观察时间延长而升高(P＜0.05),PaCO2均随观察时间的延长而降低(P＜0.05).观察组治疗有效率为87.5％,显著高于对照组的70.0％ (P ＜0.05).治疗5d后两组患儿血清CK-MB水平均较前降低(P＜0.05),且观察组明显低于对照组(P＜0.05).结论 猪肺磷脂注射液气管内给药联合NCPAP可以显著降低呼吸衰竭早产儿CK-MB的含量,提高治疗有效率,起到很好的呼吸循环支持作用.