90Y-抗人成骨肉瘤单抗对人成骨肉瘤裸鼠移植模型的治疗观察

目的：观察90Y标记的抗人成骨肉瘤单克隆抗体(OSMcAb)对人成骨肉瘤裸鼠移植模型的放射免疫治疗作用。方法：采用EDTA淋洗法从90Y发生器上制备游离90Y,并用DTPA环酐法将90Y标记OSMcAb。标记单抗进行体外靶细胞结合实验以验证标记后单抗蛋白活性保持程度,应用自制的人成骨肉瘤细胞系HOS-8603接种裸鼠建立人成骨肉瘤的裸鼠移植模型,使用90Y-OSMcAb,对此模型进行导向治疗观察。结果：(1)EDTA淋洗法制备90Y纯度高,其相对含量可达99.997％;(2)单克隆抗体的90Y标记率达90％以上,抗体蛋白活性保持82.3％;(3)治疗结果表明治疗组肿瘤明显小于对照组,原肿瘤的指数生长规律遭到破坏,治疗组生存期明显长于对照组;(4)组织学切片显示治疗组肿瘤有广泛坏死,PcNA免疫组化显示治疗组肿瘤细胞增殖受到明显抑制。结论：经单抗特异导向的90Y在体内有很好的杀肿瘤效应,使用核素标记该单抗对骨肉瘤进行放射免疫实验治疗是成功的。     

干扰素-γ对人结膜下Tenon''''s囊成纤维细胞表型转化的干预

目的探讨干扰素-γ(IFN-γ)对人结膜Tenon s囊成纤维细胞(HTCF)表型转化的干预作用。方法4例白内障手术中,取结膜下组织块培养成纤维细胞。用蛋白质印迹免疫检测技术和免疫细胞化学技术鉴定细胞表型。检测未经诱导及经转化生长因子-β1(TGF-β1)诱导(有或无IFN-γ预处理)后的HTCF表达α-平滑肌肌动蛋白(α-SMA)的情况。结果与未经诱导的HTCF相比较,10ng/mL的IFN-γ能显著抑制HTCF转化为肌成纤维细胞(MF)(P<0.01)。对于经过IFN-γ预处理后再用TGF-β1诱导的HTCF,IFN-γ仅能部分抑制其表达α-SMA。结论IFN-γ能抑制HTCF转化为MF;仅能部分干预TGF-β1诱导HTCF转化为MF的作用。     

干扰素-γ对人结膜下Tenon's囊成纤维细胞表型转化的干预

目的探讨干扰素-γ(IFN-γ)对人结膜Tenon's囊成纤维细胞(HTCF) 表型转化的干预作用.方法 4例白内障手术中,取结膜下组织块培养成纤维细胞.用蛋白质印迹免疫检测技术和免疫细胞化学技术鉴定细胞表型.检测未经诱导及经转化生长因子-β1(TGF- β1)诱导(有或无IFN-γ预处理)后的HTCF表达α-平滑肌肌动蛋白(α-SMA)的情况.结果与未经诱导的HTCF相比较,10 ng/mL的IFN-γ能显著抑制HTCF转化为肌成纤维细胞(MF)(P<0.01).对于经过IFN-γ预处理后再用TGF-β1诱导的HTCF, IFN-γ仅能部分抑制其表达α-SMA.结论 IFN-γ能抑制HTCF转化为MF;仅能部分干预TGF-β1诱导HTCF转化为MF的作用.     

IL-2基因修饰人骨肉瘤细胞的制备及骨肉瘤患者IL-2和sIL-2R测定

目的　 IL - 2基因修饰人骨肉瘤细胞的制备及骨肉瘤患者 IL - 2 ,s IL - 2 R水平测定 .方法　用逆转录病毒载体将人 IL - 2基因插入人骨肉瘤细胞系制备成 IL- 2基因修饰骨肉瘤细胞 ;用放射免疫法及 EL ISA法检测骨肉瘤患者血清内 IL- 2 ,s IL- 2 R水平 .结果　经 G418筛选和 PCR鉴定后制备成功人骨肉瘤 IL- 2基因修饰细胞 ,并证实其有分泌 IL- 2功能 ,用 MTT法测得其培养上清中 IL - 2表达量为每 1× 10 E5细胞 2 4h 5 0～ 80 0 u.骨肉瘤患者免疫功能调查发现其血清 IL - 2水平明显低于正常 ,而 s IL - 2 R则明显高于正常 ,…     

人骨肉瘤细胞HOS锎-252中子放射敏感性的研究

目的观察锎-252中子治疗骨肉瘤的效果.方法人骨肉瘤细胞HOS用铱-192γ射线和锎-252中子射线分别以不同的剂量照射,MTr法绘出细胞存活曲线,经典的克隆形成分析测算D0、Dq和SF2值,彗星分析法检测照射后细胞的DNA损伤情况.结果MTT法、克隆形成分析和彗星分析法3种方法的实验结果均表明HOS细胞对锎-252中子射线更为敏感.由克隆形成分析得到锎-252中子射线和铱-192γ射线照射HOS细胞的D0值分别是2.80和3.34,Dq值分别是2.66和3.07,SF2值分别是0.596和0.684.锎-252中子射线和铱-192γ射线以200、500、1 000 cGy 3个剂量照射HOS细胞后,碱性彗星尾力矩分别是(6.664±0.648)、(20.322±1.433)、(33.909±1.245)和(4.760±O.528)、(15.203±1.272)、(27.375±1.315)(P＜0.05).结论锎-252中子对HOS细胞的杀伤效果优于铱-192γ射线,说明锎-252中子放射治疗骨肉瘤可能是一种具有发展潜力的放射治疗方法.     

福尔奔胶囊对人成骨肉瘤细胞HOS TE85增殖及Ⅰ型胶原产生的影响

目的　通过体外培养的人成骨肉瘤细胞HOSTE85 ,观察福尔奔胶囊 (Fullbone)对成骨细胞增殖及Ⅰ型胶原产生的影响。方法　在体外培养的人成骨肉瘤细胞HOSTE85培养液中 ,加入Full bone (1～ 10 0 0 0 μg/L) ,分别培养 2 4、4 8、72、96h ,于结束培养前 6h ,加入3H -脱氧胸腺嘧啶检测细胞增殖 ;或于细胞开始培养时 ,加入3H -脯氨酸检测Ⅰ型胶原产生。结果　在 4 8、72h ,Fullbone明显抑制细胞增殖 ,量效关系显著 ;在 4 8、72、96h ,Fullbone明显刺激细胞Ⅰ型胶原产生 ,量效关系显著。结论　Fullbone对人成骨肉瘤细胞HOSTE85增殖具有抑制作用 ,对Ⅰ型胶原产生具有促进作用 ,这可能是其临床治疗更年期骨质疏松的作用机理。     

人参皂苷-Rf诱导骨肉瘤细胞DNA损伤和修护受损的人成纤维细胞研究

目的:探讨人参皂苷-Rf对骨肉瘤细胞和人成纤维细胞是否具有细胞凋亡和DNA损伤的作用。方法:体外培养骨肉瘤细胞系(MG-63,U-2OS,HOS和SAOS-2)和人成纤维细胞;利用MTT法检测人参皂苷-Rf对骨肉瘤细胞系和人成纤维细胞增殖的影响;再用彗星电泳和γH2AX焦点实验检测人参皂苷-Rf诱导MG-63和U-2OS细胞的DNA损伤作用;最后利用DNA梯度实验观察人参皂苷-Rf对受损人成纤维细胞的修护作用。结果:MTT显示人参皂苷-Rf对骨肉瘤细胞增殖有抑制作用。人参皂苷-Rf诱导骨肉瘤MG-63、U-2OS细胞凋亡和DNA损伤,随浓度和处理时间增加而显著增加;进一步发现人参皂苷-Rf可修复和保护发生DNA损伤和凋亡(MNNG诱导)的人成纤维细胞。结论:人参皂苷-Rf可抑制骨肉瘤细胞的增殖,同时保护和修复受损的正常细胞。因此人参皂苷-Rf不仅可以作为抗癌药物使用,同时与其它抗癌药物配合使用可以有效的降低抗癌药物对正常细胞的副作用,保护正常细胞,使抗癌药物更好的发挥作用。     

人成骨肉瘤MG-63细胞雌激素相关基因的分离

目的 :筛查 17β雌二醇 (17β estradiol,E2 )诱导人成骨肉瘤MG 6 3细胞株差异表达cDNA片段 ,寻找雌激素相关基因。方法 :改良的cDNA代表性差异分析法 (cDNArepresentationaldifferenceanalysis,cDNARDA)分离E2 干预MG 6 3细胞株表达上调cDNA片段 ,经Southern和快速Northern杂交证实表达上调的cDNA片段来源后 ,将其克隆到 pGEM Teasy载体 ,蓝白筛选后挑取阳性克隆进行测序和同源比较分析 ,最后选取其中部分克隆行Northern印迹杂交。结果 :第 4轮消减杂交得到 5个E2 诱导人成骨肉瘤MG 6 3细胞表达上调的差异cDNA条带 ,Southern和快速Northern杂交证明表达上调的cDNA片段来自E2 干预的MG 6 3细胞 ;随机选 2 5个克隆测序得到13个序列 ,7个与已知基因高度同源 ;其中 2个克隆经Northern杂交证实E2 干预后表达上调。结论 :cDNARDA能有效筛查差异表达基因 ,人成骨肉瘤MG 6 3细胞中某些基因受雌激素诱导表达上调 ,可能与绝经后骨质疏松的发病相关。     

人成骨肉瘤MG-63细胞雌激素相关基因的分离

目的：筛查17β雌二醇(17β-estradiol，E2)诱导人成骨肉瘤MG-63细胞株差异表达cDNA片段，寻找雌激素相关基因。方法：改良的cDNA代表性差异分析法(cDNA representational difference analysis,cDNA RDA)分离E2干预MG-63细胞株表达上调cDNA片段，经Southern和快速Nortthern杂交证实表达上调的cDNA片段来源后，将其克隆到pGEM-T easy载体，蓝白筛选后挑取阳性克隆进行测序和同源比较分析，最后选取其中部分克隆行Norern印迹杂交。结果：第4轮消减杂交得到5个E2诱导人成骨肉瘤MG-63细胞表达上调的差异cDNA条带，Southern和快速Northern杂交证明表达上调的cDNA片段来自E2干预的MG-63细胞；随机选25个克隆测序得到13个序列，7个与已知基因高度同源；其中2个克隆经Northern杂交证实E2干预后表达上调。结论：cDNA RDA能有效筛查差异表达基因，人成骨肉瘤MG-63细胞中某些基因受雌激素诱导表达上调，可能与绝经后骨质疏松的发病相关。     

Stathmin基因反义核酸对人成骨肉瘤细胞系的生长抑制作用

目的　探讨 Stathmin基因的反义核酸 (AS- ODN)对人成骨肉瘤细胞系的生长抑制作用 ,并观察与化疗药物合用后的协同作用 .方法　以高表达 Stathm in的人成骨肉瘤细胞系 SOSP- 96 0 7为靶细胞、反义 Stathmin(AS- ODN)为阻断剂 ,通过 MTT试验观察 AS- ODN对成骨肉瘤细胞的生长抑制作用及与紫杉醇 (PTX)的协同作用 ,流式细胞仪分析细胞增殖周期的影响 .结果　 AS- ODN及 AS- ODN与 PTX联合应用均明显抑制成骨肉瘤细胞的生长 (P <0 .0 5 ,P <0 .0 1) .SOSP- 96 0 7在 AS- ODN作用下 ,细胞分裂阻滞在分裂期的中期 ,并诱导细胞发生凋亡 .结论　 Stathmin基因的反义核酸(AS- ODN)对成骨肉瘤细胞的生长可能起十分重要的作用 ,它有望成为成骨肉瘤治疗的新靶点 ,与抗癌药联合应用有协同作用     

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.     

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.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.     

Scientific principles and rigorous processes should be followed in developing clinical guidelines for therapeutic interventions of integrative medicine

A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care（~＇4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.