兔甲状软骨细胞体外培养研究

目的:研究体外培养的甲状软骨细胞的生物学特性。方法:分离培养兔甲状软骨细胞,进行原代与传代培养,用倒置显微镜及组织学方法观察细胞形态、功能及生长增殖。结果:原代、第2代、第3代软骨细胞呈圆形或多角形,第4代有一半变成梭形,第6代绝大多数变成长梭形;原代甲状软骨细胞阿新蓝染色阳性,具有合成和分泌糖胺多糖的功能。结论:体外单层培养的兔甲状软骨细胞表型能保持3代稳定,具有正常的生长增殖能力。     

兔肋软骨细胞的高效分离及体外培养

目的:研究兔原代肋软骨细胞的高效分离及体外培养快速增殖方法.方法:取2月龄新西兰大白兔肋软骨,以培养液配制的0.1%Ⅱ型胶原酶分离兔肋软骨细胞,检测细胞收获效率和存活率.体外培养并传代,观察细胞形态、生长及胞外基质中胶原的变化.结果:①肋软骨经Ⅱ型胶原酶消化软骨基质逐步解离和降解,细胞被完全分离,细胞存活率平均为97.1%;②原代、第1代和第2代细胞贴壁生长呈三角形或多角形,生长融合时呈卵圆形,麦松三色反应呈阳性,第3代细胞逐渐变为梭形;③传代细胞在75cm2培养瓶中培养的增殖量大约是在25cm2瓶中增殖量的2.96倍.结论:①Ⅱ型胶原酶能完全消化降解肋软骨基质,使细胞完全分离,并具有高细胞收获率和高细胞存活率;②原代、第1代和第2代肋软骨细胞具有良好的生物学活性;③传代细胞在75cm2培养瓶中培养,可以减少传代次数而收获所需数目的细胞.     

体外培养大鼠耻骨联合软骨细胞的生物学特性

[目的]通过对大鼠耻骨联合软骨细胞的分离及体外培养,观察其生长、表型等一般生物学特点.[方法]采用胰蛋白酶、Ⅱ型胶原酶序贯消化法,从SD大鼠耻骨联合软骨组织中分离出软骨细胞,用含150mL/L胎牛血清的DMEM/F-12培养液原代和传代培养.分别以2g/L胶原酶消化2、6、12 h,分析不同消化时间获取的细胞数量及生长情况.对6 h消化组细胞进行Ⅱ型胶原免疫组化染色,并观察第1、4、7代的生长曲线.[结果]经胶原酶消化2、6、12 h后,平均每100mg耻骨联合软骨获取的原代细胞数之间有统计学显著差异（P＜0.01）.消化6 h组可以获取数量丰富的原代细胞,生长状态好.大鼠耻骨联合细胞原代呈短梭形、三角形或多角形,有短细胞突起.Ⅱ型胶原免疫组化染色在第1、4代培养细胞均呈阳性,第7代培养细胞呈阴性.第7代细胞生长增殖比第1、4代慢.[结论]耻骨联合软骨细胞体外培养时属于有限细胞系.培养初期（第4代之前,含第4代）的细胞较好地保持了软骨细胞的表型,且增殖能力强,有可能作为软骨组织工程的种子细胞.     

乳鼠成骨细胞体外培养

目的建立乳鼠成骨细胞体外培养方法,探讨该方法的可行性和应用价值。方法用出生1~3 d乳鼠颅骨,采用多次胶原酶消化法进行细胞体外培养。倒置显微镜观察细胞形态,对其碱性磷酸酶(ALP)活性及矿化能力进行鉴定,并测定细胞生长曲线。结果原代培养24 h后,大量细胞贴壁生长,细胞呈圆形,48 h后,贴壁细胞呈长梭形、三角形或不规则多边形,并且贴壁细胞伸出2~3个突起,胞质透亮、饱满,7 d后细胞铺满整个平皿底面。经鉴定,培养细胞具有体内成骨细胞的生物学特性。细胞接种后第1与第2个24 h为细胞的潜伏适应期,第3与第7个24 h生长曲线基本为线性曲线,是细胞的对数生长期。结论采用胶原酶消化法分离培养成骨细胞的方法切实可行。     

体外培养大鼠耻骨联合软骨细胞的生物学特性

 [目的]通过对大鼠耻骨联合软骨细胞的分离及体外培养,观察其生长、表型等一般生物学特点.[方法]采用胰蛋白酶、Ⅱ型胶原酶序贯消化法,从SD大鼠耻骨联合软骨组织中分离出软骨细胞,用含150mL/L胎牛血清的DMEM/F-12培养液原代和传代培养.分别以2g/L胶原酶消化2、6、12 h,分析不同消化时间获取的细胞数量及生长情况.对6 h消化组细胞进行Ⅱ型胶原免疫组化染色,并观察第1、4、7代的生长曲线.[结果]经胶原酶消化2、6、12 h后,平均每100mg耻骨联合软骨获取的原代细胞数之间有统计学显著差异（P＜0.01）.消化6 h组可以获取数量丰富的原代细胞,生长状态好.大鼠耻骨联合细胞原代呈短梭形、三角形或多角形,有短细胞突起.Ⅱ型胶原免疫组化染色在第1、4代培养细胞均呈阳性,第7代培养细胞呈阴性.第7代细胞生长增殖比第1、4代慢.[结论]耻骨联合软骨细胞体外培养时属于有限细胞系.培养初期（第4代之前,含第4代）的细胞较好地保持了软骨细胞的表型,且增殖能力强,有可能作为软骨组织工程的种子细胞.     

大鼠关节软骨细胞的培养

目的探讨大鼠关节软骨细胞培养方法。方法采用胶原酶NB4消化法从1周龄SD大鼠的关节软骨中分离出软骨细胞并进行原代和传代培养,每日在倒置显微镜下观察细胞形态及其生长情况,并用HE、甲苯胺蓝染色和Ⅱ型胶原免疫组织化学染色进行鉴定。结果软骨细胞形成单层的时间在原代培养1周左右,5d左右即可传代。第5代后部分变为梭形,第7代后绝大部分变为长梭形,增殖能力减弱。结论采用此法可在短时间内获得大量纯化的大鼠软骨细胞。     

大鼠胫骨生长板软骨细胞的体外培养及鉴定

[目的]建立体外培养及鉴定大鼠胫骨生长板软骨细胞的方法.[方法]采用胰酶和Ⅱ型胶原酶序贯消化法对5～8只3周龄SD大鼠胫骨生长板软骨行体外分离、培养并传至第6代、观察各代软骨细胞形态,MTT法绘制细胞生长曲线,Ⅱ型胶原免疫组化染色,阿力新蓝染色检测各代软骨细胞外基质硫酸糖氨多糖(GAG)含量和结构,采用逆转录聚合酶链反应检测各代细胞Ⅱ型胶原和aggreacan mRNA表达水平.[结果]体外培养的软骨细胞随着传代次数的增加,细胞形态由原代的多角形逐渐变为长梭形;MTT比色法显示,4代以前的软骨细胞的生长曲线近似"S"形,在第4～8天细胞呈对数生长,在第9～10天达平台期,至第11天开始出现生长抑制.4代以前的软骨细胞Ⅱ型胶原免疫组化呈强阳性.原代至第6代软骨细胞的GAG含量、长链分子百分比分别为0.35±0.04,(83.0±3.6)%;0.33±0.02,(78.7±4.2)%;0.31±0.06,(77.7±2.3)%:0.30±0.05,(77.0±5.3)%;0.14±0.01,(44.3±4.0)%;0.10±0.01,(39.3±2.5)%及0.07±0.01,(28.0±2.0)%,显示从第4代后随着传代次数的增加逐渐下降(P<0.05),Ⅱ型胶原和aggreacan mRNA表达水平亦显著减少(P<0.05).[结论]本研究所采用的软骨细胞分离和培养的方法,能在短时间内获得高纯度和高存活率的软骨细胞,第3代及以前的细胞保留了软骨细胞的表型特征,增殖较快,这一方法为更深入地从细胞水平研究儿童的生长提供了可靠有效的模式.     

不同消化方法对心肌成纤维细胞体外培养影响

目的对比不同消化方法对原代乳鼠心肌成纤维细胞体外培养的影响,探求更高效的细胞分离、培养方法。方法改良既往文献报道的心肌成纤维细胞分离方法,选用胶原酶、胰酶、胶原酶加胰酶消化液分别对同等数量随机挑选的同窝出生1～2 d的SD乳鼠进行心肌成纤维细胞分离,从细胞数量及活性、细胞增殖、细胞纯度及对中药、西药反应灵敏度等方面对分离出的第0代(P0)细胞及传代至第2代(P2)的细胞进行比较。结果胶原酶消化法分离所得细胞在数量、成活率、贴壁速度、增殖速度方面,明显优于胰酶消化法或胶原酶加胰酶消化法,P0.05,差异有统计学意义;在形态学上并无明显差异,且细胞纯度均可达到95%;胶原酶消化法所得细胞对中药、西药灵敏度较高,P0.05,差异有统计学意义。结论选用胶原酶作为原代乳鼠心肌成纤维细胞的消化酶,运用时间梯度消化细胞,可以高效得到数量多、活性好、纯度高、对药物反应灵敏的细胞。     

乳兔关节软骨细胞的分离、培养及生物学特性的观察

目的：建立乳兔软骨细胞分离及培养的方法,观察软骨细胞在体外培养中的生物学特性.方法：采用两步消化法,将乳兔关节软骨进行分离、培养.采用苏木精伊红染色和甲苯胺蓝染色对软骨细胞进行鉴定,用MTT法绘制生长曲线、并在倒置显微镜观察各代软骨细胞形态、通过免疫组化染色、逆转录聚合酶反应（RT PCR）法观察其生物学特性.结果：通过两步酶消化法,成功分离出乳兔关节软骨细胞,培养24 h后细胞贴壁呈短梭形.培养2周左右软骨细胞聚集似“铺路石”样.MTT法显示细胞生长曲线近似“S”形.甲苯胺蓝呈阳性结果,并随代数增加阳性结果呈减弱趋势.通过免疫组化染色和RT PCR显示随代数增加软骨细胞Ⅰ型胶原表达增强,Ⅱ型胶原表达减弱.结论：本研究采用两步酶消化法,成功从乳兔软骨内获取大量活性好、纯度高的软骨细胞,3代以内软骨细胞生长良好,并保持其生物学特性,适于软骨组织工程的应用.3代以后开始出现去分化现象.     

胶原酶消化分离兔关节软骨细胞及体外聚集培养的观察

目的通过观察采用单一胶原酶消化分离、体外聚集培养获得的兔关节软骨细胞的生物学性状,证实这种获得方法的可靠性。方法取活体成年兔关节软骨,体外采用Ⅱ型胶原酶一次性消化,高密度聚集培养后用倒置显微镜观察细胞形态及生长情况,常规染色及Ⅱ型胶原免疫组化染色法观察软骨细胞表型变化。结果 （1）收集细胞总量为（1.2～2.6）×105个·g-1。台盼兰检测细胞活性率平均为96.7%。（2）前三代细胞生长迅速,形态呈短梭形、三角形、多边形等,融合时呈卵圆形。（3）经过聚集扩增培养后Mallory及甲苯胺兰异染反应均为阳性,Ⅱ型胶原免疫组化结果为阳性。结论单一胶原酶消化分离、体外聚集培养这一方法可以获取大量优良的软骨细胞。     

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.