人脐血CD34+细胞和贴壁细胞体外诱导树突状细胞及其鉴定

目的 从人脐血中不同的前体细胞扩增树突状细胞(DCs)，并对其进行鉴定。方法 用免疫磁珠法分离人脐血CD34^ 细胞，以GM—CSF、TNF-α、FL、SCF和IL-4诱导生成DC；用Ficoll分离脐血单个核细胞，2h贴壁后的细胞，以GM-CSF、IL-4和TNF-α诱导生成DC。观察细胞形态，流式细胞仪分析表面标志(CDla、CD80、HLA-DR)，并检测其刺激同种异体T细胞增殖的能力。结果 人脐血CD34^ 细胞和贴壁细胞体外诱导生成的细胞均具有典型的DC形态特征，表达高水平的DC分化抗原CDla，MHCⅡ类抗原递呈分子HLA—DR和CD80共刺激分子，并具有刺激同种异体T细胞增殖的能力。前者扩增DC的效率更高。结论 从人脐血CD34^ 细胞和贴壁细胞均可诱生出功能性DC，是DC理想的组织来源。     

诱导体外扩增脐血CD34+细胞分化为树突状细胞的研究

目的应用两步法诱导体外扩增的脐血CD34 细胞分化为树突状细胞,为进一步研究作准备.方法用免疫磁珠法分离人脐血CD34 细胞,先以SCF、FL和TPO体外扩增2周,然后以GM-CSF、TNF-α、FL、SCF、IL-4诱导生成DC,并对细胞观察鉴定.同时观察DC前体细胞冻存后对DC生成的影响.结果人脐血CD34 细胞体外扩增后诱导生成的DC具有典型的DC形态特征,表达高水平的DC分化抗原CDla,MHCⅡ类抗原递呈分子HLA-DR和CD80共刺激分子,具有刺激同种T细胞增殖的能力.该法较直接从CD34 细胞诱生DC获得DC的产量显著提高.冻存DC前体细胞复苏后仍可诱生出具有典型形态和功能的DC.结论脐血CD34 细胞体外扩增后,可诱生出大量具有功能的成熟DC.非程控降温的方法保存DC前体细胞于一80℃冰箱,可以有效的保存其向DC分化的能力.     

人外周血单核细胞和脐血CD34+细胞来源的树突细胞比较

目的比较从人外周血单核细胞及脐血CD34+细胞诱导树突细胞(DC)的方法及其特性.方法用淋巴细胞分离液分离外周血单个核细胞,贴壁法获得单核细胞;经GM-CSF及IL-4诱导获得DC.磁性活化细胞分选系统(MACS)分选脐血CD34+细胞,以GM-CSF、IL-4、TNF-α、SCF、FL、TPO等细胞因子诱导获得DC.用电镜、普通显微镜观察DC形态;流式细胞仪分析DC表型;同种混合淋巴细胞反应(allo-MLR)观察DC刺激T淋巴细胞增殖的能力.结果外周血单核细胞在因子GM-CSF、IL-4、TNF-α,脐血CD34+细胞在GM-CSF、IL-4、TNF-α、SCF、FL、TPO等因子作用下,可生成DC,并表达相应的DC分化抗原CD14、CD80、CD83、CD86、HLA-DR.脐血CD34+细胞具有较强的扩增能力,经2周诱导,体系细胞数可增加173.8士26.7倍,两种来源的DC均能刺激同种异体淋巴细胞的增殖反应.结论外周血单核细胞与脐血CD34+细胞,在体外均可诱导成DC,并具有相应的DC分化抗原和功能.     

肿瘤患者造血干细胞来源的树突状细胞的制备及鉴定

目的:以经动员富集的肿瘤患者外周血单个核细胞(MNC)为来源,建立体外诱导培养临床级树突状细胞(DC)的方法并其形态、表型及功能的鉴定。方法:以化疗联合皮下注射G-CSF对肿瘤患者进行外周血干细胞动员,血细胞分离机分离富集外周血MNC,聚苯乙烯细胞培养板贴壁纯化后,加入无血清培养液X-vivo15,以GM-CSF和IL-4联合诱导DC分化,诱导d5加入TNF-α促进DC成熟,观察DC形态及表型变化;并检测其刺激同种异体淋巴细胞增殖的能力。结果:以该法诱导的患者DC显示出典型的树突细胞形态表型特征,同时具有较强的刺激同种异体淋巴细胞增殖的能力。结论:以经动员富集的肿瘤患者外周血MNC为来源,联合应用GM-CSF、IL-4及TNF-α,在体外可诱导培养出临床级具有典型形态、表型及免疫活性的DC。     

健康人外周血树突状细胞诱导培养及鉴定

[目的]从健康人外周血中分离出单个核细胞(PBMC),经体外诱导培养获取树突状细胞(DC)并鉴定其表型.[方法]应用GM-CSF、IL-4、TNF-α等细胞因子自外周血单个核细胞诱导扩增,培养出DC,动态观察细胞形态,流式细胞仪检测其表面标志,采用混合淋巴细胞培养法检测其刺激同种异体淋巴细胞增殖能力.[结果]经诱导培养出具有典型特征的DC,高表达CD86、CD80,DC特征性标志CD1a平均为49.28%,在体外能诱导强烈的同种异体混合淋巴细胞增殖反应.[结论]该方法能可靠地诱导培养出DC,为DC的进一步研究提供实验依据.     

脐血及外周血树突状细胞的体外诱导及比较研究

目的 :体外诱导扩增具典型形态、表型及功能的树突状细胞 (DC) ,以进行相关基础研究及临床应用。方法 :取正常人外周血及脐血 ,以 Ficoll分离取白细胞 ,去除悬浮细胞后 ,分别在以加入 GM- CSF,TNF-α(脐血 )及GM- CSF,IL- 4 (外周血 )的完全培养基中培养 ,在第 3,7,9天表型 (CD1a,CD80 ,CD83,HL A- DR)分析及形态观察 ,1周左右分别做同种异体混合淋巴细胞培养 ,比较激发细胞增殖的能力。结果 :脐血诱导的 DC细胞数大于外周血来源的 DC细胞数 ,两者有显著差异。两种来源的 DC在形态及细胞表型 (第 9天 CD1a脐血 6 7.2± 3.6 % ,外周血 6 9.3± 6 .8% ;CD83脐血 73.7± 5 .5 % ,外周血 75 .6± 4 .9% )无显著差异 ,两者的刺激同种异体淋巴细胞增殖能力无显著差异。结论 :脐血可成功诱导功能性 DC,脐血诱导比外周血诱导效率高 ,且与外周血所诱导的 DC在形态及功能方面差异无显著性     

脐血CD34+细胞体外诱导分化为树突状细胞及其扩增

目的 探索脐血CD34+细胞体外诱导分化为树突状细胞及其扩增、培养大量树突状细胞(DCs)的方法.方法 Ficoll分离脐血单个核细胞,免疫微磁珠法分离纯化CD34+细胞,以rhIL-4、GM-CSF、rhSCF、rhFlt-3 Ligand、TGF-β1及TNF-α体外诱导培养14 d,进行形态学观察、表型检测及上清液IL-12测定.结果 体外培养14 d后,细胞呈现典型的成熟DCs形态学及表型特征:胞体表面粗糙,可见大量突起,高水平表达CD1a、CD11c、CD40、CD80、CD83、CD86和MHCⅡ类分子;同时,IL-12浓度随着培养时间的增加而升高,且在加入TNF-α刺激成熟后,IL-12浓度较未成熟时显著升高(P＜0.05).结论 体外联合运用rhIL-4、GM-CSF、rhSCF、rhFlt-3Ligand、TGF-β1、TNF-α, 能够成功诱导脐血CD34+细胞分化为大量活力好的DCs.     

α-干扰素联合GM-CSF体外诱导培养脐血树突状细胞及其功能的测定

目的 探讨重组人α-干扰素(rhIFN-α)联合重组人粒-巨噬细胞集落刺激因子(rhGM-CSF)体外诱导培养脐血树突状细胞(DCs)的实验方法。方法 人脐血贴壁单个核细胞加入rhIFN-α及rhGM-CSF诱导培养,镜下观察培养细胞形态;流式细胞术检测培养细胞CD83、CD86的表达;MTT法检测诱导培养的DCs体外刺激同种异体T淋巴细胞增殖的活性。结果 人脐血贴壁单个核细胞经rhIFN-α联合rhGM-CSF共同培养后,第7d镜下可见有表面呈树状突起的DCs;细胞免疫表型检测结果示培养细胞有成熟DCs特异性标记CD83及共刺激分子CD86表达;rhIFN-α为600U／ml、rhGM-CSF为2000U／ml时为脐血DCs诱导培养的合适浓度(培养细胞CD83^ CD86^ 细胞比率最高);以诱导培养7d的脐血细胞(含DCs)作为刺激细胞与同种异体T淋巴细胞(反应细胞)以不同比例混合培养时,DCs均可刺激其增殖,其中以反应细胞：刺激细胞为20：1时最明显。结论 rhIFN-α联合rhGM-CSF细胞因子体外诱导人脐血贴壁单个核细胞,可生成具有典型形态及功能的成熟DCs。     

脐血CD34+细胞体外诱导分化为树突状细胞及其扩增

目的探索脐血CD34 细胞体外诱导分化为树突状细胞及其扩增、培养大量树突状细胞(DCs)的方法。方法Ficoll分离脐血单个核细胞,免疫微磁珠法分离纯化CD34 细胞,以rhIL-4、GM-CSF、rhSCF、rhFlt-3Ligand、TGF-β1及TNF-α体外诱导培养14d,进行形态学观察、表型检测及上清液IL-12测定。结果体外培养14d后,细胞呈现典型的成熟DCs形态学及表型特征:胞体表面粗糙,可见大量突起,高水平表达CD1a、CD11c、CD40、CD80、CD83、CD86和MHCⅡ类分子;同时,IL-12浓度随着培养时间的增加而升高,且在加入TNF-α刺激成熟后,IL-12浓度较未成熟时显著升高(P<0.05)。结论体外联合运用rhIL-4、GM-CSF、rhSCF、rhFlt-3Ligand、TGF-β1、TNF-α,能够成功诱导脐血CD34 细胞分化为大量活力好的DCs。     

慢性粒细胞白血病患者骨髓中不同细胞诱生树突状细胞的体外研究

目的:体外诱导慢性粒细胞白血病(CML)患者骨髓单个核细胞(BMMNCs)、CD34+细胞、单核细胞为树突状细胞(DCs),并对其形态、表型及其刺激T细胞增殖作用进行比较。方法:利用GM-CSF、IL-4、TNF-α体外定向诱导生成树突状细胞,利用流式细胞仪对所诱生的细胞进行细胞形态及表型检测,用D-FISH方法检测所诱生DCs的白血病源性。并应用MTT法检测所诱生的DCs刺激T细胞增殖的能力。结果:CML患者BMMNCs、CD34+细胞、单核细胞体外均可诱导生成bcr/abl融合基因阳性的DCs,前者DCs产量明显高于后二者,但均具有刺激自体及异体T细胞增殖的能力,且三者无显著性差异。结论:来源于CML患者骨髓的BMMNCs、CD34+细胞、单核细胞均可诱生成CMLDCs,对T细胞均具有刺激增殖能力,但BMMNCs所诱生的DC主要来源于未成熟的中性粒细胞。     

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.     

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.