透明质酸酶腹腔注射联合吖啶橙染色对恶性腹水的诊断价值

目的 :探讨透明质酸酶 (HAase)腹腔注射、腹水沉渣吖啶橙 (AO)染色对恶性腹水诊断的应用价值。方法 :2 8例经病理学证实为恶性腹水患者 ,患者先抽取腹水 2 0 0 0～ 4 0 0 0ml,用 2 0 0 0～ 3 0 0 0u透明质酸酶腹腔注射 ,次日抽腹水 ,沉渣AO染色 ,荧光显微镜下观察 ,与病理细胞学对比检测癌细胞的阳性率。结果 :用HAase前后腹水沉渣病理细胞学癌细胞检出率和腹水沉渣AO染色癌细胞检出率差异均有统计学意义 (P均 <0 .0 0 5)。透明质酸酶腹腔注射前腹水沉渣AO染色比常规病理细胞学检测肿瘤细胞的阳性率高 (P <0 .0 5)。透明质酸酶腹腔注射后腹水沉渣AO染色与常规病理细胞学检测肿瘤细胞的阳性率差异无统计学意义 (P >0 .5)。结论 :透明质酸酶腹腔注射结合AO染色检测腹水肿瘤细胞的方法阳性率高 ,是一种简便、快速、经济的方法     

阻断ErbB4受体对人胆管细胞癌QBC939细胞系增殖与转移的影响

目的:通过体外培养人胆管癌QBC939细胞系,阻断ErbB4受体,检测肿瘤生物学行为的改变,从而探讨人类第4表皮生长因子(ErbB4)受体介导人胆管细胞癌肿瘤生物学行为的分子机制.方法:体外培养人胆管癌QBC939细胞系细胞,分别加入终浓度为0μmol/L,1μmol/L,5μmol/L,10μmol/L,25μmol/L,50μmol/L,75μmol/L,100μmol/L的AG1478阻断胆管癌细胞ErbB4受体,使用CCK-8法测量各组胆管癌细胞增殖情况,然后利用SPSS软件计算AG1478对人胆管癌QBC939细胞的半数抑制浓度(IC50值);根据IC50值选择使用0μmol/L,25μmol/L,50μmol/L,75μmol/L AG1478阻断胆管癌细胞ErbB4受体,使用划痕实验检测各组胆管癌细胞迁移能力的变化.分别使用0μmol/L,25μmol/L,50μmol/L,75μmol/L浓度AG1478阻断胆管癌细胞ErbB4受体,使用Transwell小室法实验检测各组胆管癌细胞侵袭能力的变化.结果:AG1478以浓度依赖方式抑制QBC939细胞增殖,其IC50值为:49.14μmol/L;AG1478抑制ErbB4受体后,胆管癌QBC939细胞的迁移、侵袭能力减弱.结论:在体外抑制ErbB4受体能使胆管癌肿瘤细胞生长、迁移、侵袭能力减弱;ErBb4在胆管癌的发生、发展中具有重要的作用,ErbB4可能成为胆管癌分子治疗的新靶点.     

银耳制剂对小鼠移植性肿瘤预防作用的初步观察(论著摘要)

近年来国内外学者对银耳进行了一些研究,发现它有促进肝蛋白质合成,抗辐射,抗肿瘤的作用。本实验对采用深层发酵制备的酵母型银耳进行肿瘤预防作用的实验研究。 昆明种小鼠在移植肿瘤细胞前,每只动物腹腔注射银耳制剂4mg×4(每次注射间隔时间为3d),于末次给药后3d腹腔注射生长7d的腹水型肝癌细胞1×10~6个/只,从接种瘤细胞后第7天至第16天,银耳预防组荷瘤鼠的腹围明显地小于对照组荷瘤鼠的腹围,说明银耳制剂可使荷瘤鼠腹水减少.在观察的45d     

L1210克隆细胞肿瘤动物模型生物学特性研究

目的　对L12 10细胞及其 4株克隆细胞建立的肿瘤动物模型的某些生物学特性进行比较研究 ,从中筛选出基本符合L12 10细胞生物学特性且一致性更好的克隆细胞。方法　北京肿瘤所L12 10细胞和 4株克隆细胞腹腔接种DBA 2小鼠 ,观察产生腹水的性质、腹水瘤细胞浓度和致小鼠死亡时间 ;皮下接种DBA 2小鼠 ,观察瘤块的生长情况 ;腹腔注射化疗药物环磷酰胺 (CY) ,比较对CY治疗的敏感性。结果　腹腔接种DBA 2小鼠均能生长腹水 ,其中克隆细胞L2H8、L3B12产生血性腹水 ,L3F9的腹水微血性 ,L3E11与肿瘤所L12 10细胞为无血性腹水 ;腹水瘤细胞的浓度及小鼠生存时间亦有差别。肿瘤所L12 10细胞及克隆细胞L3F9、L2H8、L3E11、L3B12第 10天瘤重依次为 1 9± 0 4 6、1 5± 0 3 8、0 75± 0 5 2、2 6± 0 3 0、2 0± 0 3 3g ;用CY治疗的抑瘤率分别是 4 8 7% ,81 3 % ,86 0 % ,78 7%及 67 1%。结论　 4株克隆细胞的生物学特性基本符合L12 10细胞 ,对化疗药物CY的敏感性均高于L12 10细胞     

血根碱基于PI3K/AKT通路抑制结肠癌细胞增殖和迁移的机制研究

目的 研究血根碱在结肠癌细胞增殖和迁移中的作用及其机制。方法 使用不同剂量(2、4、8μmol/L)血根碱对结肠癌细胞系(HCT-8、SW-620)进行处理，利用光学显微镜观察结肠癌细胞形态变化；细胞计数试剂CCK-8及细胞克隆试验观察血根碱对结肠癌细胞生长的影响；细胞划痕实验测定血根碱对结肠癌细胞迁移的影响；蛋白质印迹法测定相关蛋白E-钙黏蛋白(Ecad)、N-钙黏蛋白(N-cad)、磷脂酰肌醇3-激酶(PI3K)、丝氨酸/苏氨酸激酶(AKT)、磷酸化丝氨酸/苏氨酸激酶(p-AKT)、雷帕霉素靶蛋白(mTOR)的表达。建立HCT-8皮下瘤体模型，分别采用生理盐水和10 mg/kg的血根碱液进行腹腔内灌注，以探讨其对结肠癌的抑制作用。结果 CCK-8实验表明，血根碱对结肠癌细胞有明显杀伤作用[HCT-8和SW-620的IC₅₀分别是(3.40±0.03)μmol/L和(5.32±0.12)μmol/L]，而对正常结肠黏膜细胞具有较小的杀伤作用[IC₅₀为(14.98±1.34)μmol/L]。不同浓度(0、2、4、8μmol/L)的血根碱以剂...     

选择性ＣＯＸ-２抑制剂ｃｅｌｅｃｏｘｉｂ对肝细胞癌细胞周期的影响

目的:探讨选择性COX-2抑制剂celecoxib对培养的人肝细胞癌细胞的细胞周期的阻滞作用.方法:采用3种常规培养的人肝细胞癌细胞株HUH-7、Hep3B和HepG2,分别给予不同浓度的celecoxib(0、10、25、50 μmol/L),作用不同的时间(0、12、24、48 h),用WST-8法检测细胞的活性,用流式细胞仪检测肝癌细胞的细胞周期变化.结果:WST-8检测发现,随着celecoxib的作用浓度的增加和作用时间的延长,3种肝癌细胞的细胞活性明显下降.流式细胞仪检测发现,3种肝癌细胞在celecoxib 25μmol/L作用24 h后出现Go/G1期阻滞,HUH-7细胞也出现较弱G2/M期阻滞的现象,48 h时更为明显.结论:选择性COX-2抑制剂celecoxib可以通过明显的细胞周期阻滞作用降低肝细胞癌细胞活性,阻滞的时期主要位于Go/G1期和G2/M期.     

视黄酸逆转入肝癌细胞株的研究

视黄酸(RA)可阻断化学诱癌剂诱发表皮、乳腺和膀胱等上皮类肿瘤,但RA是否可以使已恶变的肝癌细胞向良性方向逆转,国内外尚未见报道我们以肝癌较特异的癌胚蛋白——甲胎蛋白(AFP)及分化性蛋白——白蛋白(Alb)为指标,用10μmol/L RA处理(实验组)8MMC-7721入肝癌细胞株,初步发现明显抑制肝癌细胞的对数生长,在RA加入后第二天,实验组的细胞数为对照组的64％,第五天,     

木犀草素抗肿瘤细胞增殖及增敏抗肿瘤药物作用研究

目的:研究黄酮类化合物木犀草素(Luteolin)对体外抗肿瘤细胞增殖,以及其与抗肿瘤药联用的增敏作用.方法:选用5 μmol/L或10 μmol/L木犀草素与不同浓度抗肿瘤药联合作用肿瘤细胞24 h后,用MTS法检测其体外抗增殖作用.结果:5 μmol/L木犀草素对人非小细胞肺癌细胞(A549)、人子宫颈癌细胞(Hela)、人乳腺癌细胞(MCF-7)、人胃腺癌细胞(AGS)、人胃癌细胞(MGC-803)的抗增殖作用均<20%,对人结肠癌细胞(Caco2)和人肝癌细胞(HepG2)的抗增殖作用约20%.Bexarotene单一用药时对Hela细胞抑制率达50%(IC_(50))的浓度约为2 μmol/L,与5 μmol/L木犀草素联用后IC_(50)约0.2 μmol/L,5 μmol/L木犀草素与0.1 μmol/L Bexarotene联用对Hela细胞的抗增殖作用达44%,Bexarotene与木犀草素联用在MGC-803、HepG2、A549细胞中增敏较小,在Caco2和MCF-7细胞中无增敏作用;顺铂单一用药时对Hela细胞的IC_(50 )>30 μmol/L,与5 μmol/L木犀草素联用后IC_(50)约3 μmol/L,联用后在MGC-803、HepG2和A549中增敏较小;博来霉素单一用药时对Hela细胞的IC_(50)>100 μmol/L,对A549细胞的IC_(50)约为100 μmol/L,与5 μmol/L木犀草素联用后Hela细胞的IC_(50)约为1 μmol/L,与10 μmol/L木犀草素联用后A549细胞的IC_(50)约为10 μmol/L.木犀草素与格列卫联用在MGC-803、HepG2、A549和AGS中增敏较小.结论:木犀草素在低于10 μmol/L浓度时,对肿瘤细胞体外抗增殖作用较小.低浓度(5 μmol/L~10 μmol/L)的木犀草素在不同的肿瘤细胞中对抗肿瘤药的增敏作用强度不同,在Hela细胞中增敏作用最显著.     

三氧化二砷诱导胃癌细胞凋亡及其对bcl-2基因和bax蛋白表达的影响

目的探讨三氧化二砷(As2O3)诱导胃癌细胞凋亡及其对bcl-2基因、bax蛋白表达的影响。方法分别以0μmol/L、1μmol/L、2μmol/L、4μmol/L和8μmol/L浓度的As2O3作用于胃癌SGC-7901细胞24 h、48 h和72 h,采用四甲基偶氮唑蓝(MTT)检测法检测各组吸光度值、细胞生长抑制率,采用流式细胞仪(FCM)检测bcl-2基因和bax蛋白的表达情况。结果随着As2O3浓度的增高及作用时间的延长,MTT吸光度值逐渐降低,1μmol/L、2μmol/L、4μmol/L、8μmol/L组分别与0μmol/L组比较,不同作用时间MTT吸光度值比较,差异均有统计学意义(P<0.05)。1μmol/L的As2O3对细胞增殖抑制作用较小,随着As2O3浓度的增高及作用时间的延长,细胞增殖抑制率相应增加,2μmol/L、4μmol/L、8μmol/L组分别与1μmol/L组比较,不同作用时间细胞增殖抑制率比较,差异均有统计学意义(P<0.05)。不同浓度的As2O3作用于SGC-7901细胞后,bcl-2基因呈低表达,bax蛋白呈高表达,bcl-2/bax比值降低且呈剂量依赖性,不同浓度As2O3组与对照组bcl-2基因、bax蛋白表达情况比较,差异均有统计学意义(P<0.05)。结论 As2O3对胃癌细胞的生长具有明显的抑制作用,其机制可能与下调bcl-2基因表达,上调bax蛋白表达从而诱导胃癌细胞的凋亡有关。     

顺铂腹腔化疗对卵巢癌模型鼠雌激素影响的实验研究

目的观察鼠卵巢癌模型在顺铂化疗前后雌激素水平的变化,评估顺铂腹腔化疗对卵巢功能的影响。方法取8周龄裸鼠36只,随机分为空白对照组(A组,n=8)、肿瘤细胞接种后不化疗组(B组,n=12)、肿瘤细胞接种后静脉化疗组(C组,n=8)、肿瘤细胞接种后腹腔化疗组(D组,n=8)。所有裸鼠均行一侧附件切除术,除A组外,术中向其余3组鼠腹腔内注射卵巢癌细胞悬液。于术后第9天对A组和B组裸鼠腹腔内注入生理盐水,C组裸鼠尾静脉注射顺铂(20μg/g)+腹腔内注射生理盐水,D组裸鼠腹腔内注射顺铂(20μg/g)。第1次化疗后第0、10、20天分别取鼠尾静脉血测量雌激素水平。化疗22d后重复第1次化疗方法1次。于第2次化疗后第10、20及30天分别取鼠尾静脉血测量雌激素水平。结果腹腔内接种肿瘤细胞后B、C及D组裸鼠雌激素水平明显高于A组(P＜0.05),A与B组的雌激素水平相对稳定,C和D组雌激素水平在化疗后显著降低,但C组高于D组(P＜0.05),随着化疗后时间延长,C与D组裸鼠雌激素水平逐渐下降至A组水平(P＞0.05)。结论 顺铂化疗会损伤卵巢功能,腹腔化疗对卵巢皮质的损伤可能大于静脉化疗,随着化疗间隙期的延长卵巢功能可以得到恢复。     

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…     

Development on Adjustable Calibration Marker for Shock Wave Focus

Shock wave lithotripsy （SWL） is a treatment of choice for upper urinary stones. However, this procedure is inappropriate for obese patients because the focus is often unable to reach the target owing to the limited focal distance in shock wave source. Although treating such patients in a blast path may increase the application length of shock wave source, it＇s difficult to find this path on the lithotripter monitor. For this reason, we invented an adjustable calibration marker in order to set an effective focus in the shock wave hath.     

Study on the TCM Pathogenesis of Angiopathic Complications of Type II Diabetes

Excess production of reactive oxygen species(ROS)of mitochondrion mediated by hyperglycemia is the common pathogenesis of angiopathic complications of diabetes.TCM holds that the damp from the dysfunction of spleen.kidney and liver is the causative factor of complications of diabetes.This is similar to the mechanism of Ros resulting in angiopathic complications of diabetes.When the angiopathic complications of type II diabetes mellitus(T2DM)are difierentiated as caused by turbid damp in TCM can be explained as ROS.Since the obstruction of pathogenic damp in channels and collaterals is said to be the main pathogenesis,the treating principle should be dissolving the damp to remove the obstruction.     

Leptin, Ghrelin and TNF-α before and after Hypo-caloric Traditional Chinese Diet and Auricular Acupuncture

INTRODUCTION Obesity is a complex emergent problem, which can be possibly solved not only by the diet but also by the life style and promotion of a constant physical exercise. 1, 2 No doubt careful attentions must be given to the nutritional condition of obese people, the dietary habits, the somatic build (i.e. distribution of fat mass) and the organic functions linked to formation of the fat mass. All the parameters should be constantly monitored before, during and after a diet treatment. 3, 4, 5     

Relationship between Dysglycemia and Carotid Atherosclerosis in Tibetan Population

People with dysglycemia are at high risk for atherosclerotic diseases. This study aims at investigating the atherosclerotic vascular damage in dysglycemia and its metabolic origin in Tibetan population.     

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.