层粘连蛋白总糖肽对小鼠巨噬细胞功能的影响

观察层粘连蛋白总糖肽对小鼠腹腔巨噬细胞杀伤黑色素瘤Ｂ１６细胞及噬抗体包被的羊红细胞作用的影响。将ＢＡＬＢ／ｃ小鼠腹腔Ｍψ体外培养４８ｈ后，再分别与０，５０，１００，２００μｇ／ｍｌ终浓度的ＬＮ－Ｇｐｓ预温３０ｍｉｎ，用噻唑蓝比色法检测Ｍψ对Ｂ１６细胞的杀伤作用，用联苯胺氧化比色法检测Ｍψ吞噬ＥＡ的功能。     

葡萄球菌肠毒素A的细胞增殖诱导能力

目的：观察葡萄球菌肠毒素Ａ的细胞增殖诱导能力及其抗肿瘤作用。方法：ＭＴＴ微量酶反应比色法。结果：纯化ＳＥＡ在１０＾－１２￣１０＾－１５ｇ／ｍｌ浓度范围对体外培养的ＢＡＬＢ／Ｃ鼠脾细胞表现了细胞增殖诱导能力,并呈剂量依赖关系,其中１０＾－７￣１０＾０５ｇ／ｍｌＳＥＡ的作用强于最适量（２５μｇ／ｍｌ）ＰＨＡ。在Ｅ／Ｔ为５￣２０：１条件下,１０＾－５ｇ／ｍｌＳＥＡ活化４８小时的ＢＡＬＢ／Ｃ鼠脾细胞对Ｙａｃ－１细胞的杀伤活性高于ＮＫ细胞,但ＳＥＡ未能增强ＢＡＬＢ／Ｃ鼠脾细胞对Ｂ１６细胞的杀伤活性。结论：葡萄球菌肠毒素Ａ具有较强的细胞增殖诱导能力,据此超抗原特性可应用于肿瘤的生物治疗。     

复方苦参增加 ＮＫ 细胞对白血病干细胞杀伤作用的实验研究

目的：研究复方苦参对自然杀伤细胞（ＮＫ 细胞）杀伤白血病干细胞（ＬＳＣ）的影响及机制。方法：检 测 ＮＫ 细胞对 Ｋ ５６２ 细胞、复方苦参干预前后 ＬＳＣ 的杀伤作用,流式细胞术检测细胞凋亡情况。检测 Ｋ ５６２ 细 胞、复方苦参干预前后 ＬＳＣ 细胞表面的 ＮＫＧ２Ｄ 配体人巨细胞病毒 ＵＬ １６ 蛋白的结合蛋白（ＵＬＢＰ１）、ＭＨＣ－Ⅰ类 链相关分析 Ａ 或 Ｂ（ＭＩＣＡ／ Ｂ）水平。结果：复方苦参提高 ＬＳＣ 对 ＮＫ 细胞杀伤作用的敏感性。复方苦参增加 ＮＫ 细胞对 ＬＳＣ 诱导凋亡作用。复方苦参可上调 ＬＳＣ 表面的 ＮＫＧ２Ｄ 配体 ＵＬＢＰ１、ＭＩＣＡ／ Ｂ 水平。结论：复方苦参增 强 ＬＳＣ 对 ＮＫ 细胞杀伤的敏感性和凋亡诱导作用。     

Line 10肝癌细胞产生的肿瘤生长因子对人肝上皮癌细胞体外增殖的影响

目的：检测近交２系豚鼠肝癌细胞ｌｉｎｅ１０分泌的生长因子ＴｕＧＦ（ｓ）对人肝上皮癌细胞（ＢＥＬ－７４０２）生长的影响。方法：集落形成测定法检测ＴｕＧＦ（ｓ）对ＢＥＬ－７４０２细胞在软琼脂培养基内生长的影响。ＭＴＴ法测定ＴｕＧＦ（ｓ）对ＢＥＬ－７４０２细胞在液体培养基内增殖的影响。结果：软琼脂培养基内培养时ＴｕＧＦ（ｓ）对ＢＥＬ－７４０２细胞无集落形成促进或抑制作用；单层培养的条件下，ＴｕＧＦ（ｓ）对ＢＥＬ－７４０２细胞在１×１０５个／ｍｌ接种细胞浓度下，具有促进细胞生长的作用；而在１×１０４个／ｍｌ细胞浓度下，则为抑制细胞生长的作用。结论：ＴｕＧＦ（ｓ）对ＢＥＬ－７４０２细胞体外增殖的影响依实验条件的不同具有复杂的生物学调节作用     

姜黄素对人肝癌Bel7402细胞杀伤动力学及周期时相的影响

目的 研究姜黄素对人肝癌Ｂｅｌ－７４０２细胞杀伤动力学及周期时期的影响，方法 以集落形成法测定药物对增殖期与坪期细胞杀伤的量效关系曲线，以流式细胞仪及ＡＯ／ＥＢ荧光染色法分析药物对Ｂｅｌ７４０２细胞周期时相及凋亡的影响。结果 姜黄素１～１０μｇ／ｍｌ作用２ｈ对不同增殖状态的Ｂｅｌ７４０２细胞均呈单指数型杀伤，但对增殖期细胞敏感，１～１０μｇ／ｍｌ作用２４ｈ，Ｇ０－Ｇ１，期细胞及Ｇ２－Ｍ期细胞的比例     

反义N-ras-1基因对成纤维细胞生长因子诱导的血管平滑肌细胞增殖的抑制作用

目的应用反义Ｎ－ｒａｓ１基因阻断成纤维细胞生长因子（ｂＦＧＦ）的促增殖作用，为防治以血管平滑肌细胞（ＶＳＭＣ）增殖为主要特征的血管损伤后再狭窄等心血管疾病提供进一步探索的途径。方法利用构建的含反义Ｎ－ｒａｓ１基因的逆转录病毒质粒（ｆｐＧｖ１－ＭＴ－ＡｎｔｉｓｅｎｓｅＮ－ｒａｓ１）转染于培养的血管平滑肌细胞（ＶＳＭＣｓ），ｆｐＧｖ１－ＭＴ逆转录病毒空载质粒及未转染质粒的细胞为对照，观察其对ｂＦＧＦ诱导的ＶＳＭＣ的影响。结果反义Ｎ－ｒａｓ１细胞数为（１６．８±１．３）×１０４（细胞／ｍｌ），空载质粒对照细胞为（３０．１±１．２）×１０４，两者差异有显著意义（Ｐ＜０．００１）；反义Ｎ－ｒａｓ１细胞３Ｈ－ＴｄＲ掺入率为７６４３±６７２（ｃｐｍ），空载质粒对照细胞为１５１３１±１３８（ｃｐｍ），两者差异有非常显著意义（Ｐ＜０．００１），同时应用反义Ｎ－ｒａｓ１基因的细胞ＲａｓｍＲＮＡ表达水平明显降低，其表达蛋白ｐ２１也明显降低。结论反义Ｎ－ｒａｓ１基因对ＶＳＭＣ及ｂＦＧＦ诱导ＶＳＭＣ增殖有抑制作用。     

细胞基质分子影响人颊癌细胞侵袭力的体外实验研究

为探讨人颊癌细胞侵袭性生物学行为的有关分子机制。采用体外人羊膜模型,以建株人颊癌细胞系ＢｃａＣＤ８８５为研究对象,观察了细胞外基质ｅｘｔｒａｃｅｌｌｕｌａｒ ｍａｔｒｉｘ,ＥＣＭ）活性分子层粘连蛋白（Ｌａｍｉｎｉｎ,ＬＮ）、纤粘连蛋白Ｉｆｉｂｒｏｎｅｃｔｉｎ,ＦＮ）及其结合位点疗列肽ＲＧＤ（Ａｒｇ－Ｇｌｙ－Ａｓｐ）对人癌细胞侵袭力的影响。结果表明,不同浓度的ＬＮ,ＲＮ（１０～５０ｍｇ／ｍｌ）均明显     

人参皂甙与LAK细胞联合治疗恶性脑胶质瘤的实验研究

目的：探索提高恶性脑胶质瘤治疗效果的新途径。方法：用人参皂甙（Ｇｉｎｓｅｎｏｓｉｄｅ,ＧＳ）与白细胞介素２（ＩＬ－２）协同诱导人外周血单个核细胞（ＰＢＭＣ）制成ＧＣ－ＬＡＫ细胞,用ＭＴＴ法测定其对恶性脑胶质瘤细胞（ＢＴ３２５）的杀伤活性,并与ＬＡＫ细胞相比较;结果：效应细胞ＧＳ－ＬＡＫ在增殖数量和杀伤恶性脑胶质瘤细胞活性等方面均优于ＬＡＫ细胞,且ＩＬ－２用量减少;     

洋地黄毒甙体外抗人癌细胞株的作用

目的：探讨洋地黄毒甙体外抗肿瘤作用。方法：以台盼蓝排染法、中性红活染法和克隆形成实验测定洋地黄毒甙（ＤＴ）对多种人癌细胞株的细胞毒作用。结果：０．０１～１．２５μｇ／ｍｌＤＴ在体外能显著杀伤ＨＬ－６０．Ｋ５６２．ＳＭＭＣ－７７２１，ＳＧＣ－７９０１细胞，并呈剂量依赖性，药物作用２４ｈ．ＩＣ５０分别是０．１３２．０．１８２．０．２６５．０．４８９μｇ／ｍｌ。对正常成纤维细胞株ＨＬＦ的ＩＣ（５０）为４．２８８μｇ／ｍｌ．明显高于癌细胞，对癌细胞具有选择毒性作用。克隆形成实验中，０．０１～１．２５μｇ／ｍｌＤＴ处理１２ｈ，对ＨＬ－６０和ＳＧＣ－７９０１细胞集落形成有明显的抑制作用，ＩＣ５０分别是０．０５６．０．ｌ１９μｇ／ｍｌ。结论：应用洋地黄毒甙及其他Ｎａ＋－Ｋ＋－ＡＴＰ酶抑制剂防治肿瘤是一个值得探讨新方向。     

人白细胞介素2,β干扰素基因逆转录病毒载体的构建和在人…

从ｐｃＤ－５．１质粒和ｐＳＰＧＮＨＩＦＮＢ１０质粒分别切下人白细胞介素２（ＨｕＩＬ－２）ｃＤＮＡ和人β干扰素（ＨｕＩＦＮ－β）ｃＤＮＡ，分别克隆到ｐＮＭＳＭ逆转录病毒载体多克隆位点，经酶切鉴定确定正确插入方向。经ＰＡ３１７包装细胞包装成重组病毒，测转染效率。用ＮＩＨ／３Ｔ３细胞测重组病毒感染效率。在８μｇ／ｍｌ鱼精蛋白存在的条件下分别感染人新鲜肾透明细胞癌体外建株细胞以及人肾细胞癌肿瘤浸润性淋巴细     

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.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

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.