普萘洛尔,维拉帕米和卡普托利对L—甲状腺素性心肌肥厚的消退…

大鼠连续口服Ｌ－甲状腺素４ｍｇ．ｋｇ＾－１×７ｄ可形成心肌肥厚，高甲状腺素状态下，心肌去甲肾上腺素（ＮＥ）增加，交感神经兴奋而使细胞内Ｃａ＾２＋增加，其表现为线粒体ａ＾２＋，Ｍｇ＾２＋－ＡＴＰ酶活性增高。大鼠连续３天口服普萘洛尔１０ｍｇ／ｋｇ。维拉帕米５，１０ｍｇ／ｋｇ及卡普托利５ｍｇ／ｋｇ可使肥厚心肌消退，并可降低线粒体钙泵活性。     

家蚕细胞基因工程人α—干扰素注射液对离体培养HL60,KB细胞及对小？…

家蚕细胞基因工程人α－干扰素注射液具有抑制肿瘤生长和。对于离体培养的ＨＬ６０和ＫＢ细胞，ＩＨＩＦＮ－α有直接抑制肿瘤细胞生长的作用，且呈剂量依赖性关系。在体研究中，ＩＨＩＦＮ－α．２．０×１０＾６ＩＵ／ｋｇ对Ｓ１８０有较明显的报制趋向，抑瘤率达２１．０％；而对于ＥＡＣ，ＩＨＩＦＮ－α４．０×１０＾５ＩＵ／ｋｇ及２．０×１０＾６ＩＵ／ｋｇ两个剂量都无明显延长生存时间的作用；     

~（99m）Tc－新半乳糖白蛋白体外受体介导结合特性的研究

本文报道￣９９ｍＴｃ－新半乳糖白蛋白（￣９９ｍＴｃ－ＮＧＡ）与大鼠肝细胞膜进行体外结合试验。结果表明：￣９９ｍＴｃ－ＮＧＡ系与肝细胞膜上的高亲和力低容量（Ｋ＿１：８．４０８９×１０￣９Ｌ／ｍｏｌ；Ｒ＿１：１．７３５０×１０￣（－１２）ｍｏｌ／ｍｇ）和低亲和力高容量（Ｋ＿２：２．０８２７×１０￣８Ｌ／ｍｏｌ；Ｒ＿２：６．９５３０×１０￣（－１２）ｍｏｌ／ｍｇ）２个结合位点相结合，其结合表现出高特异性、可饱和性及对细胞膜蛋白浓度的线性依赖性，具备受体介导结合的基本特征。￣（９９ｍ）Ｔｃ－ＮＧＡ是一个很有希望的肝受体显像剂。     

维甲酸和丁酸钠对体外LAK细胞活性的影响

维甲酸、丁酸钠具有促进肿瘤细胞分化，抑制肿瘤细胞生长及其他多种生物学效应。本研究从肿瘤生物治疗的角度，探讨了这两种诱导剂在体外对ＬＡＫ细胞活性的影响，发现丁酸钠或维甲酸单独不能诱导ＬＡＫ细胞活性，也不能增强ＮＫ细胞活性，但可调节ＩＬ－２对ＬＡＫ细胞活性的诱导。低浓度可增强ＬＡＫ细胞活性，其最适浓度丁酸钠为１×１０＾－７ｍｏｌ／Ｌ，二可分别提高ＬＡＫ细胞杀伤活性１５０％及１００％。结果表明，丁酸钠     

茂钛络合物—纳米NaH体系催化苯乙烯氢化

茂钛络合物，以纳米ＮａＨ为助催化剂催化苯乙烯氢化，初速率为３．７×１０＾３－８．３×１０＾３ｍｏｌ／（ｍｏｌ．ｍｉｎ）（Ｈ２／Ｔｉ），催化效率为６．４×１０＾３－１８．５×１０＾３ｍｏｌ／ｍｏｌ（Ｈ２／Ｔｉ），均高于文献的其他２茂钛催化体系，考察了不同温度对催化反应的影响，反应温度在２７５－３１５Ｋ时，活化能为２０．３ｋＪ／ｍｏｌ，与催化体系活性高一致。     

氧自由基对体外小鼠脾细胞产生IL－2的影响及其机制初探

观察了氧自由基在体外对Ｂａｌｂ／ｃ小鼠脾细胞产生ＩＬ－２的影响，并就其影响机制进行了初步研究。结果发现，１０－３ｍｏｌ／Ｌ的过氧化氢抑制小鼠脾细胞ＩＬ－２的产生，而１０－７～１０－４ｍｏｌ／ＬＨ２Ｏ２以及黄嘌呤氧化酶系统（黄嘌呤氧化酶１０－１Ｕ／ｍｌ，次黄嘌呤５×１０－５ｍｏｌ／Ｌ）产生的超氧阴离子对小鼠脾细胞产生ＩＬ－２具促进作用。其作用机制可能是通过影响细胞内ｃＡＭＰ的浓度从而影响淋巴细胞的活化。     

PB230体外抗肿瘤活性的研究

目的：研究ＰＢ２３０对人胃癌细胞（ＭＧＣ８０－３）、人红白血病细胞（Ｋ５６２）和人乳腺癌细胞（ＭＣＦ－７）的生物抑制作用,探讨其抗癌作用机制,方法：采用ＭＴＴ法检测不同浓度ＰＢ２３０对体外培养的ＭＧＣ８０－３细胞系、Ｋ５６２细胞系和ＭＣＦ－７细胞系的生长抑制作用,结果：ＰＢ２３０明显抑制ＭＧＣ８０－３、Ｋ５６２和ＭＣＦ－３三种细胞系的生长,其ＩＣ５０值分别为２&;#215;１０＾－６－１&;#215;１０＾－５ｍｏｌ／Ｌ之间,２&;#215;１０＾－６ｍｏｌ／Ｌ和１&;#215;１０＾－５ｍｏｌ／Ｌ,结论：ＰＢ２３０能直接抑制肿瘤细胞生长。     

地高辛的半微分阴极吸附伏安法研究

作者用半微分阴极吸附伏安法测定地高辛的方法，在１．０×１０＾－３ｍｏｌ／ＬＮａＯＨ底液中，于－１．０Ｖ富集于２ｍｉｎ，以１００ｍＶ／ｓ向阴极扫描，有一稳定的还原峰。在地高辛浓度为４．０×１０＾－７ｍｏｌ／Ｌ－１０．０×１０＾－７ｍｏｌ／Ｌ范围内，该还原峰峰高与地高辛浓度成线性，检出下限为１．０×１０＾－８ｍｏｌ／Ｌ。     

过氧化氢对小鼠脾细胞IL-2基因表达的影响

应用细胞免疫学和分子生物学的斑点杂交技术,探讨Ｈ２Ｏ２对小鼠脾细胞产生ＩＬ２和ＩＬ２ｍＲＮＡ表达的影响。结果示１０３～１０－２ｍｏｌ·Ｌ１Ｈ２Ｏ２对小鼠脾细胞产生ＩＬ２有抑制作用,并显著低于对照组（Ｐ＜０．０１）;１０－４ｍｏｌ·Ｌ－１有促进作用（Ｐ＜０．０１）;１０－８～１０－５ｍｏｌ·Ｌ－１则影响不明显。斑点杂交结果示１０－３ｍｏｌ·Ｌ－１Ｈ２Ｏ２对小鼠脾细胞ＩＬ２ｍＲＮＡ表达有抑制作用,１０－４ｍｏｌ·Ｌ－１有促进作用,而１０－５ｍｏｌ·Ｌ－１影响不明显。以上结果提示Ｈ２Ｏ２可能是通过影响ＩＬ２ｍＲＮＡ的水平来影响ＩＬ２的产生     

溶栓药APSAC的制备和鉴定

重组链激酶（ｒ－ＳＫ）由工程菌提取液经ＳｅｐｈａｃｒｙｌＳ－２００柱纯化，比活性达１０５ＩＵ／ｍｇ，十二烷基硫酸钠－聚丙烯酰胺凝胶电泳（ＳＤＳ－ＰＡＧＥ）显示分子量为７８．０２４７×１０－２４ｋｇ的一条带。人新鲜血浆经Ｌｙｓｉｎｅ－Ｓｅｐｈａｒｏｓｅ４Ｂ亲和层析，ＳｅｐｈａｄｅｘＧ－２５凝胶过滤制备纤溶酶原（ｐｌｇ），比活性达２３．７ＩＵ／ｍｇ，活性回收率为１３．６％，ＳＤＳ－ＰＡＧＥ显示分子量为１４７．７４８９×１０－２４ｋｇ的一条带。对－茴香酸－对－脒基ｒ－ＳＫ和ｐｌｇ的混合物经苯酯盐酸盐（ＡＰＡＮ）修饰后制备茴香酰纤溶酶原链激酶激活剂复合物（ＡＰＳＡＣ），产物经Ｌ－ｌｙｓｉｎｅＳｅｐｈａｒｏｓｅ４Ｂ亲和层析，ＳＤＳ－ＰＡＧＥ显示分子量为７８．０２４７×１０－２４ｋｇ和１４７．７４８９×１０－２４ｋｇ两条带，其拟一级水解速率常数为１．２６×１０－４ｓｅｃ－１。体外溶栓实验证明其有溶栓活性。     

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.