二甲双胍对人乳腺癌ZR75—1细胞增殖及凋亡的调控

目的探讨抗糖尿病药物二甲双胍对人乳腺癌ZR75—1细胞增殖抑制及凋亡诱导的作用。方法3种不同浓度的二甲双胍处理乳腺癌ZR75—1细胞24、48h,MTT法检测ZR75-1细胞的增殖活性,流式细胞仪（FcM）检测48h后各浓度二甲双胍诱导细胞凋亡情况及对细胞周期的影响。结果与对照组相比,二甲双胍以时间、剂量依赖性方式抑制ZR75—1细胞增殖（P〈0．05）。作用48h后,二甲双胍诱导ZR75—1细胞凋亡并阻断了细胞周期进程,凋亡率随二甲双胍浓度的增加而增加（P〈0．05）,且随着药物浓度的增加,G0／G1期细胞比例逐渐增加,S期及G2／M期细胞比例逐渐下降（P〈0．05）。结论二甲双胍可显著抑制ZR75—1细胞的增殖,诱导其凋亡,阻滞细胞周期进程。     

二甲双胍对人肝细胞癌SMMC7721增殖的抑制作用

[摘要]目的检测二甲双胍作用下肝细胞癌SMMC-7721细胞的增殖和凋亡情况,并初步探讨了其中的机制。方法以不同浓度(0.2、1、2、5 mmol/L)二甲双胍处理SMMC-7721,用CCK-8法检测其对细胞增殖的影响,Hochest33342 DNA染色检测细胞凋亡,实时定量PCR法检测Bcl-2和Bid mRNA的表达情况。结果二甲双胍处理48 h 和96 h后,人肝细胞癌SMMC7721细胞的增殖明显受到抑制(P<0.05),以2 mmol/L和5 mmol/L组最为明显(P<0.01),并呈时间和剂量依赖性。Hochest33342染色发现,1 mmol/L和5 mmol/L浓度的二甲双胍可促进细胞凋亡,细胞凋亡率与对照组相比差异有统计学意义(P<0.05)。二甲双胍处理后,SMMC7721细胞内抗凋亡分子Bcl-2表达下降(P<0.01),促凋亡分子Bid表达升高(P<0.05)。结论二甲双胍能抑制人肝细胞癌SMMC7721细胞增殖,促进细胞凋亡,其机制可能与细胞内抗细胞凋亡分子Bcl-2表达下降及促凋亡分子Bid表达升高有关。     

二甲双胍对人血清诱导的胰腺癌细胞增殖及MMPs表达的影响

目的：探讨二甲双胍对糖尿病患者血清诱导的胰腺癌细胞株Patu8988增殖的影响及相关基因表达的变化。方法：以糖尿病患者血清诱导细胞株Patu8988为糖尿病组,以健康人血清为对照组,用不同浓度的二甲双胍（2.5、5.0、10.0、20.0、40.0 mmol/L）干预两组细胞,通过CCK-8细胞增殖实验检测不同血清诱导后细胞的增殖能力,采用RT-PCR检测二甲双胍干预后基质金属蛋白酶（MMP）-2、MMP-8和MMP-11 mRNA表达的差异。结果：与健康对照组相比,糖尿病患者血清诱导后促进Patu8988细胞增殖（0.74±0.03 vs.0.62±0.02,P＜0.01）;二甲双胍抑制糖尿病患者血清诱导的细胞增殖（P＜0.01）;RT-PCR结果显示二甲双胍减弱MMP-2、MMP-8、MMP-11的mRNA表达。结论：二甲双胍抑制糖尿病患者血清诱导的细胞增殖,这种抑制效应可能与其对MMP-2、MMP-8、MMP-11mRNA表达的下调作用有关。     

二甲双胍对结肠癌细胞增殖、周期及凋亡的影响

  目的 研究二甲双胍对人结肠癌细胞株SW480增殖、周期及凋亡的影响,并初步探讨其可能的机制。方法 体外培养人结肠癌细胞株SW480,给予不同浓度二甲双胍干预,MTT法检测细胞增殖情况,流式细胞仪检测细胞周期及凋亡,Real time-PCR法检测相关基因mRNA的表达。结果 二甲双胍可以抑制SW480细胞的增殖,并呈时间-剂量依赖性。20mmol/L二甲双胍干预48h后与对照组相比,细胞G0/G1期比例升高,S及G2/M期比例均降低;细胞凋亡比率增高;Real time-PCR示周期相关基因CyclinD1 mRNA表达明显下调（P0.05),凋亡相关基因BCL-2 mRNA表达明显下调,CASP3及BAX mRNA 表达明显上调(P<0.01)。结论 二甲双胍能够抑制人结肠癌细胞株SW480的增殖,G0/G1期细胞周期阻滞,促进细胞凋亡;其机制可能与上调及下调某些周期、凋亡相关基因的mRNA表达有关。     

二甲双胍可能通过Hippo-YAP通路抑制HER-2阳性乳腺癌细胞的增殖和促进凋亡

目的 观察二甲双胍对HER-2阳性乳腺癌细胞株SKBR3增殖、凋亡的影响,并探讨其可能的机制。方法 分别用0、20、40、60、80、100、120 μmol/L二甲双胍处理乳腺癌细胞株SKBR3,CCK-8法检测其对细胞增殖的影响;结晶紫染色观察其对细胞集落形成的影响;计算IC50值。以该浓度二甲双胍处理细胞,与空白对照相比,流式细胞术检测细胞凋亡和周期的改变;实时荧光定量 PCR（qRT-PCR）检测 YAP、TAZ、EGFR、CTGF、CYR61、E-cadherin、N-cadherin、Vimentin 及 Fibronectin 等关键基因的mRNA水平表达;Western blotting 实验检测YAP、TAZ蛋白水平的表达;免疫荧光观察二甲双胍对SKBR3细胞中YAP/TAZ核易位的改变。结果 CCK-8和细胞克隆实验显示二甲双胍对SKBR3细胞增殖活力具有明显的抑制作用（P<0.05）,呈浓度和时间依赖性。与对照组相比,二甲双胍处理后的SKBR3细胞凋亡明显增加;G1期细胞比例增多,而G2/M期细胞比例减少。N-cadherin、Vimentin和Fibronectin的表达降低,而E-cadherin的表达上调（P<0.05）。qRT-PCR和Western blotting检测结果显示,二甲双胍处理后YAP、TAZ、EGFR、CTGF和CYR61的表达明显下调（P<0.05）。免疫荧光实验显示：实验组较对照组的YAP或TAZ,其荧光的定位更多地聚集于胞浆,而细胞核中荧光的量明显的减少。结论 二甲双胍能抑制HER-2阳性乳腺癌细胞SKBR3的增殖,促进其凋亡和上皮－间质转化,其机制可能与抑制YAP/TAZ的表达和核定位有关。     

二甲双胍对类风湿性关节炎患者滑膜细胞增殖及凋亡的影响

目的 探讨二甲双胍对类风湿性关节炎患者滑膜细胞增殖与凋亡的影响.方法 取类风湿性关节炎患者滑膜组织,用胰酶消化法分离其滑膜细胞,分别用流式细胞术和CCK-8法检测三种浓度的二甲双胍(10、20、30 mmol/L)对滑膜细胞增殖的影响,TUNEL和流式细胞仪检测滑膜细胞凋亡情况,ELISA法检测二甲双胍处理的滑膜细胞上清中的炎性因子和抗炎性因子.结果 三种浓度(10、20、30 mmol/L)的二甲双胍分别干预滑膜细胞24、48、72 h,均不同程度抑制了滑膜细胞的增殖,且成时间-浓度依赖性.CCK-8法检测结果显示20、30 mmol/L二甲双胍处理显著抑制了滑膜细胞的增殖(P＜0.05),流式细胞术结果表明20 mmol/L二甲双胍处理48 h后,Go/G1期滑膜细胞的百分比与对照组相比显著增加了约20％ (P ＜0.05),S期和G2/M期的细胞比例分别显著下降了9％和11％ (P ＜0.05).凋亡结果表明,20、30 mmol/L二甲双胍处理48、72 h,较对照组显著促进滑膜细胞的凋亡(P＜0.05),流式细胞术显示早期和晚期的滑膜细胞凋亡率约17.5％.检测炎性因子发现,20、30 mmol/L二甲双胍处理后显著降低炎症因子IL-6、IL-1β和TNF-α的水平(P＜0.05),增加抗炎因子IL-10水平约66％和76％ (P ＜0.05).结论 二甲双胍可显著抑制体外培养的人滑膜细胞的增殖,诱导其凋亡,可能与二甲双胍降低炎性因子TNF-α、IL-6、IL-1β水平和增加抗炎因子IL-10水平有关.     

高糖、高胰岛素及二甲双胍对人乳腺癌MCF-7细胞增殖的影响

目的：探讨高糖、高胰岛素和不同浓度二甲双胍对乳腺癌MCF-7细胞增殖的影响。方法：体外培养人乳腺癌细胞株MCF-7,分别给予高糖和（或）高胰岛素及不同浓度的二甲双胍进行干预,MTT法检测MCF-7细胞的增殖情况。结果：高糖、高胰岛素、高糖高胰岛素作用不同时间均可促进MCF-7细胞增殖;不同浓度的二甲双胍干预后,MCF-7细胞的生长均受到一定程度的抑制,且随时间和浓度的增加而增加。结论：不同浓度二甲双胍可对高糖、高胰岛素作用下乳腺癌MCF-7细胞的增殖起到抑制作用,且呈时间和浓度依赖性。     

胰岛素及其类似物单独或联合二甲双胍对人乳腺癌细胞系 (MCF-7)增殖的影响

目的:探讨人胰岛素及其类似物对人乳腺癌细胞系(MCF-7)增殖的影响及二甲双胍联合胰岛素及其类似物对MCF-7细胞增殖的影响?方法:①使用不同浓度(0?1?10?100?1 000 nmol/L)的人胰岛素及类似物干预MCF-7细胞72 h 后,用CCK-8法检测干预后细胞增殖情况?②用胰岛素及类似物(每种胰岛素浓度均为1 000 nmol/L)干预MCF-7细胞,分别用CCK-8法检测各胰岛素在干预24?48?72 h后的细胞增殖?③用CCK-8法检测单纯二甲双胍(0?2.5?5.0?10.0?20.0 mmol/L),及二甲双胍联合胰岛素及其类似物(浓度均为1 000 nmol/L)干预 MCF-7 72 h后细胞的增殖情况?结果:人胰岛素及类似物均能促进乳腺癌细胞系增殖并呈时间依赖性,人胰岛素?甘精胰岛素?赖脯胰岛素对细胞的增殖作用呈显著的剂量依赖性,相同条件下不同胰岛素对细胞的增殖作用无明显差异,但甘精胰岛素?赖脯胰岛素在相同条件下促细胞增殖作用高于其他胰岛素?二甲双胍可以呈浓度依赖性地抑制细胞的增殖作用,并减弱胰岛素类似物引起的细胞增殖作用,相同浓度二甲双胍对不同胰岛素类似物促增殖的抑制作用无明显差异,但对地特胰岛素的抑制作用小于其他胰岛素类似物?结论:胰岛素类似物和人胰岛素均能促进肿瘤细胞的增殖,二甲双胍可以抑制MCF-7细胞增殖,二甲双胍可以拮抗胰岛素及其类似物引起的促细胞增殖作用?     

二甲双胍抑制人前列腺癌细胞上皮间质转化及其作用机制

目的 研究二甲双胍对前列腺癌Vcap细胞增殖、侵袭及上皮间质转化（EMT）的影响,初步探讨microRNA(miRNA) 相关的作用机制。方法 以PBS处理组作为对照,使用不同浓度二甲双胍(1~50mmol/L) 处理前列腺癌Vcap细胞,MTS比色法检测细胞的增殖能力;流式细胞术分析二甲双胍对Vcap细胞周期分布的影响;划痕和侵袭小室实验分别检测5mmol/L二甲双胍和miR30a对细胞迁移和侵袭能力的作用;使用RT-PCR和Western blotting测定5mmol/L二甲双胍对Vcap细胞上皮指标物（E-cadherin、β-catenin）和间质指标物（Vimentin、Snail）mRNA和蛋白表达水平的影响;使用RT-PCR检测miR30a、miR143、miR185、miR196、miR205的表达水平变化。结果 二甲双胍抑制前列腺癌Vcap细胞的增殖,且呈浓度和时间依赖性。5mmol/L 二甲双胍明显影响Vcap细胞的周期分布并显著抑制Vcap细胞的迁移和侵袭能力。二甲双胍在mRNA和蛋白水平上,显著上调Vcap细胞中E-cadherin 和β-catenin的表达(P均<0.05) ,下调Vimentin和N-cadherin的表达(P均<0.05)。进一步的实验发现,二甲双胍显著上调miR30a的表达水平 (P<0.05),而后者可显著抑制Vcap细胞的增殖和EMT的发生。结论 二甲双胍明显抑制前列腺癌Vcap细胞的增殖、侵袭能力和上皮间质转化的过程。该过程可能涉及二甲双胍对miR30a的表达的上调。     

二甲双胍对人鼻咽癌C666-1细胞的增殖与凋亡作用

目的：探讨二甲双胍对人鼻咽癌C666-1细胞增殖和调亡的作用,并初步研究其作用机制.方法：体外培养人鼻咽癌C666-1细胞,以剂量5,10,20 mM的二甲双胍干预细胞24 h或48 h.采用MTT法检测细胞增殖,流式细胞仪检测细胞凋亡,Real-time PCR检测Bax、Bcl-2和Caspase-3表达.结果：二甲双胍抑制C666-1细胞增殖,随剂量增加和干预时间延长,细胞增殖的抑制作用增强（P＜0.05）.二甲双胍诱导C666-1细胞早期凋亡,有剂量效应关系,20 mM的二甲双胍干预细胞24 h,细胞早期凋亡率（12.40±1.01）％,高于对照组的（7.20±0.53）％,差异有统计学意义（P＜0.05）.二甲双胍诱导C666-1细胞Caspase-3表达上调,降低Bcl-2/Bax比值.结论：二甲双胍抑制人鼻咽癌C666-1细胞增殖,诱导其凋亡,其机制可能与调节凋亡相关基因Bax、Bcl-2和Caspase-3的表达有关.     

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.     

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     

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.     

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.