HIF-1a对人乳腺癌细胞生物学行为的影响

目的探讨低氧诱导因子-1a(hypoxia-inducible factor-1a,HIF-1a)对人乳腺癌细胞株MDA-MB-231、MCF-7生物学行为的影响,为临床提高乳腺癌患者的生存率提供新思路。方法前期实验已经通过慢病毒转染敲除人乳腺癌细胞MDA-MB-231、MCF-7中的HIF-1a基因,HIF-1a空载慢病毒载体构建成功。1. Cell Counting Kit-8(CCK-8)实验检测细胞生长情况。2.Transwell小室侵袭实验检测细胞的侵袭能力。3.划痕损伤实验检测细胞的迁移能力。结果敲除HIF-1a的乳腺癌细胞MDA-MB-231、MCF-7的增殖、迁移侵袭能力均降低。结论 HIF-1a可能促进了人乳腺癌细胞MDA-MB-231、MCF-7的增殖,增强了细胞的迁移和侵袭能力。     

非分泌型CXCL16在乳腺癌细胞系中的表达及对其生物学特性的影响

目的 通过检测非分泌型CXCL16在不同侵袭性乳腺癌细胞系(SK-BR-3、MCF-7、MDA-MB-231、MDA-MB-435S)及正常乳腺上皮细胞MCF-10A的表达,探讨非分泌型CXCL16表达对乳腺癌细胞生物学特性的影响。 方法 采用RT-PCR检测CXCL16 mRNA在MCF-10A、SK-BR-3、MCF-7、MDA-MB-231、MDA-MB-435S细胞系的表达,将pEGFP-CXCL16真核表达质粒转染到低表达CXCL16的MDA-MB-231细胞,通过实时荧光定量PCR和Western blot验证CXCL16过表达,采用体外迁移、侵袭实验及甲基四唑蓝(MTT)法分别检测过表达CXCL16对MDA-MB-231细胞迁移、侵袭和增殖活性的影响。 结果 CXCL16 mRNA在高侵袭性的MDA-MB-231细胞低表达,在低侵袭性的MCF-7细胞高表达,过表达CXCL16使得MDA-MB-231细胞的迁移、侵袭减弱,而增殖未受到影响。 结论 非分泌型CXCL16表达与乳腺癌细胞系的侵袭性相关,其表达可以抑制乳腺癌细胞的体外迁移、侵袭。     

辐射板强化喷管换热与红外抑制效果试验研究

目的 通过检测非分泌型CXCL16在不同侵袭性乳腺癌细胞系(SK-BR-3、MCF-7、MDA-MB-231、MDA-MB-435S)及正常乳腺上皮细胞MCF-10A的表达,探讨非分泌型CXCL 16表达对乳腺癌细胞生物学特性的影响.方法 采用RT-PCR检测CXCL16 mRNA在MCF-10A、SK-BR-3、MCF-7、MDA-MB-231、MDA-MB-435S细胞系的表达,将pEGFP-CXCL16真核表达质粒转染到低表达CXCL 16的MDA-MB-231细胞,通过实时荧光定量PCR和Western blot验证CXCL16过表达,采用体外迁移、侵袭实验及甲基四唑蓝(MTT)法分别检测过表达CXCL16对MDA-MB-231细胞迁移、侵袭和增殖活性的影响.结果 CXCL16 mRNA在高侵袭性的MDA-MB-231细胞低表达,在低侵袭性的MCF-7细胞高表达,过表达CXCL16使得MDA-MB-231细胞的迁移、侵袭减弱,而增殖未受到影响.结论 非分泌型CXCL16表达与乳腺癌细胞系的侵袭性相关,其表达可以抑制乳腺癌细胞的体外迁移、侵袭.     

趋化因子受体CXCR6在乳腺癌细胞系中的表达及其意义

目的 探讨趋化因子受体（CXCR6）在不同侵袭性乳腺癌细胞系和正常乳腺上皮细胞株的表达及干扰表达后与癌细胞恶性表型的关系。 方法 采用Real time-PCR和Western blot分别检测不同侵袭性乳腺癌细胞系（SK-BR-3、MCF-7、MDA-MB-231）和正常乳腺上皮细胞（MCF-10A）中CXCR6 mRNA和蛋白质的表达;采用慢病毒RNA干扰技术沉默MDA-MB-231乳腺癌细胞系中CXCR6的表达,并利用噻唑蓝（MTT）实验、Transwell小室、Real time-PCR〔检测血管内皮生长因子（VEGF）表达〕研究CXCR6在MDA-MB-231乳腺癌细胞中的作用。 结果 正常乳腺上皮细胞MCF-10A中CXCR6表达最低,不同侵袭性的乳腺癌细胞系中CXCR6的表达不同,高侵袭性乳腺癌细胞MDA-MB-231明显较低侵袭性乳腺癌细胞SK-BR-3和MCF-7表达高(PVEGF表达水平降低(P均<0.05)。 结论 CXCR6在乳腺癌细胞株中的表达水平与细胞的侵袭性有关,干预癌细胞中的CXCR6表达将可能降低癌细胞的体外恶性生物学行为。     

二烯丙基二硫下调uPA和MMP9抑制乳腺癌细胞侵袭迁移

目的 研究大蒜提取物二烯丙基二硫(DADS)对MCF-7和MDA-MB-231两种人乳腺癌细胞侵袭迁移的作用。方法采用不同浓度(0,0,200,0 μmol/L)DADS处理MCF-7和MDA-MB-231两种人乳腺癌细胞24 h,Transwell侵袭实验检测DADS对细胞侵袭能力的影响;划痕愈合实验观察DADS对细胞迁移能力的改变;western blot检测两种细胞中尿激酶型纤溶酶原激活剂(uPA)和基质金属蛋白酶9(MMP9)的表达。结果Transwell实验发现DADS呈浓度依赖性抑制MCF-7和MDA-MB-231两种乳腺癌细胞的侵袭,划痕愈合实验则发现DADS呈浓度依赖性抑制两种乳腺癌细胞的迁移。与此同时,Western blot结果显示DADS可浓度依赖性下调侵袭迁移相关蛋白uPA和MMP9的表达。结论DADS可下调uPA和MMP9表达,抑制乳腺癌细胞侵袭迁移。     

慢病毒介导的RSK4对乳腺癌MDA-MB-231细胞增殖的影响

目的:观察转染核糖体S6蛋白激酶4(RSK4)慢病毒表达载体对乳腺癌细胞MDA-MB-231增殖能力的影响.方法:构建特异性的RSK4慢病毒表达载体LV-RPS6KA6,稳定转染至乳腺癌MDA-MB-231细胞中,使用荧光定量PCR和蛋白印迹检测RSK4 mRNA和蛋白的表达情况.用Cell Counting Kit-8实验检测转染后细胞的生长增殖情况.结果:稳定转染LV-RPS6KA6至乳腺癌MDA-MB-231细胞后,RSK4 mRNA和蛋白的表达均明显上调(均P=0.000).过表达RSK4的MDA-MB-231细胞生长被明显抑制,转染24,48,72,96 h后,其生长抑制率分别为(10.5±1.8)%、(17.7±2.5)%、(27.1±3.7)%和(13.8±2.1)%.结论:稳定转染RSK4慢病毒表达载体可明显上调RSK4 mRNA和蛋白表达,抑制乳腺癌细胞MDA-MB-231的增殖.     

转染INPP4B基因对三阴性乳腺癌细胞株MDA-MB-231增殖的影响

目的 检测转染聚磷脂酰肌醇4-磷酸酶Ⅱ(INPP4B)基因对三阴性乳腺癌细胞株MDA-MB-231增殖的影响。方法 采用反转录PCR法、Western blotting印迹法检测INPP4B在三阴性乳腺癌细胞株MDA-MB-231中的表达;通过慢病毒转染,使MDA-MB-231细胞表达INPP4B;实时定量PCR法检测转病毒后MDA-MB-231细胞INPP4B mRNA的相对表达量;Western blotting印迹法检测转病毒后MDA-MB-231细胞磷酸化丝氨酸-苏氨酸蛋白激酶B (p-AKT)以及INPP4B的蛋白表达。CCK-8法、流式细胞术分别检测转病毒后MDA-MB-231细胞增殖、凋亡及周期分布。结果 INPP4B在三阴性乳腺癌细胞株MDA-MB-231中低表达;慢病毒转染使MDA-MB-231细胞INPP4B mRNA和蛋白的表达均上调,p-AKT蛋白的表达降低;转病毒后MDA-MB-231细胞增殖受到明显抑制,并阻滞于G0/G1期。结论 INPP4B基因能明显抑制三阴性乳腺癌细胞株MDA-MB-231的增殖,并可通过影响PI3K/AKT信号通路发挥抗肿瘤作用。     

富含亮氨酸重复序列蛋白 1 通过上调哺乳动物雷帕霉素靶蛋白表达促进乳腺癌细胞迁移和侵袭

目的: 探究富含亮氨酸重复序列蛋白1（leucine-rich repeat protein 1, LRR1）在乳腺癌细胞中的表达及对其生物学功能的影响。方法: 培养人乳腺癌 MDA-MB-231、HCC70 细胞株和正常乳腺上皮MCF-10A细胞;采用蛋白免疫印迹法检测LRR1表达。将人乳腺癌 MDA-MB-231、HCC70 细胞株分为干扰对照组、LRR1干扰组、LRR1过表达组和空载体对照组,分别转染LRR1 对照、干扰、过表达、空载体序列;采用 Transwell 实验检测乳腺癌细胞迁移和侵袭能力;采用蛋白免疫印迹法检测细胞中哺乳动物雷帕霉素靶蛋白（mammalian target of rapamycin, m-TOR）表达。结果: 与正常人乳腺上皮 MCF 10A 细胞相比,乳腺癌MDA-MB-231和HCC70细胞中LRR1表达水平显著增加（P均<0.01）。在人乳腺癌 MDA-MB-231、HCC70 细胞中,与干扰对照组相比,LRR1干扰组细胞迁移和侵袭数显著降低（P均<0.01）, m-TOR表达水平明显降低（P<0.01）;与空载体对照组相比,过表达 LRR1组细胞迁移和侵袭数显著增加（P均<0.01）,m-TOR 蛋白表达水平明显增加（P均<0.01）。结论: LRR1在乳腺癌细胞中呈高表达,并可促进其迁移和侵袭。     

Disabled-1在人乳腺癌细胞中的表达及其对细胞周期的影响

目的：探讨Disabled-1（Dab1）基因在乳腺上皮细胞及乳腺癌细胞中的表达情况,并阐明Dab1对乳腺癌细胞周期的影响。方法：体外培养永生化的乳腺上皮细胞MCF-10A及乳腺癌细胞MCF-7、BT-549和MDA-MB-231,实时荧光定量（Real-time PCR）法检测MCF-10A、MCF-7、BT-549和MDA-MB-231细胞中Dab1 mRNA的表达水平,Western blotting法检测Dab1蛋白的表达水平。取对数生长期的BT-549细胞,分为对照组、转染pKH3组和转染pKH3-Dab1组,采用流式细胞术检测各组细胞周期的变化情况。结果：Real-time PCR法检测,与MCF-10A细胞（0.998±0.020）比较,乳腺癌细胞MCF-7（0.504±0.037）、BT-549（0.302±0.027）和MDA-MB-231（0.330±0.031）中Dab1 mRNA相对表达水平明显下降（P<0.05）。Western blotting法检测,与MCF-10A细胞（0.227±0.021）比较,乳腺癌细胞MCF-7（0.134±0.014）、BT-549（0.076±0.01）和MDA-MB-231（0.074±0.005）中Dab1蛋白表达水平明显下调（P<0.05）。流式细胞术检测,与对照组和转染pKH3组比较,转染pHK3-Dab1组BT-549细胞出现细胞周期G₁期阻滞。结论：Dab1在体外培养乳腺癌细胞系中表达下调,Dab1过表达可阻滞乳腺癌细胞G₁细胞周期进展。     

低氧环境下microRNA-1179的表达对三阴性乳腺癌增殖和迁移的影响

目的 观察微小RNA1179(microRNA-1179,miR-1179)在三阴性乳腺癌中的表达以及对三阴性乳腺癌增殖和迁移的影响。方法 qPCR检测miR-1179在三阴性乳腺癌和癌旁乳腺组织以及三阴性乳腺癌细胞株和正常乳腺细胞株中的表达情况。通过转染miR-1179类似物过表达miR-1179,在低氧微环境和正常氧环境中,对三阴性细胞株进行培养,通过CCK-8实验、划痕实验研究细胞生物学行为。结果 在三阴性乳腺癌组织和细胞株MDA-MB-231中miR-1179的表达明显低于癌周乳腺组织和正常的细胞株MCF-10A。在低氧环境中,MDA-MB-231在肿瘤组织中的表达明显降低,细胞的增殖和迁移能力增强,而miR-1179过表达后逆转了低氧引起的细胞增殖和迁移能力。结论 低氧可以通过负性调控miR-1179而促进细胞的增殖和迁移。     

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.