肝清除功能与肝切除后残肝损伤的关系

利用肝切除（６８％），肝切除＋ＬＰＳ大鼠，观察枯否细胞吞噬、肝清除功能与肝损伤之关系。结果发现在肝切除后果早期枯否细胞吞噬及肝清除明显受抑，残余肝出现病理改变。肝清除持续低下至术后７天渐趋恢复，肝损伤病理计分结果与之相平等。当肝切除动物 外源性ＬＰＳ攻击时，枯否细胞吞噬上清除降低更为显著，同时肝损伤亦随之加重，结果提示在肝切除病人中适当减少切除量，保护枯否细胞，以及防止肠原性感染具有重要意义。     

培养人肝细胞用于生物人工肝的初步研究

探讨培养人肝细胞与肝非实质细胞用于体外生物人工肝支持系统及其对暴发性肝衰竭进行支持治疗的可能性。方法：首先将由简易体外两步灌流法分离获取的肝细胞，肝非实质细胞进行限制贴壁条件下的混合培养。然后置空心纤维型生物反应器和辅助循环系统组成的ＥＢＬＳＳ，对无肝模型犬进行人工肝支持结果：分离所得成活率高达９４％以上的肝细胞，肝非实质细胞经定时反复旋转振荡后形成多细胞球形聚集体，浮航天工业部工保持良好的形态特     

人胎肝与SD大鼠肝组织中的抑癌物对小鼠腹水型S—180细胞抑制作用的比较

ＳＤ大鼠的肝组织提取液中存在着一种天然抑癌物（ＳＤＲ—１），其对小鼠腹水型Ｓ—１８０细胞生长的抑制效应，优于胎肝提取液．给荷癌小鼠每日分别腹腔注射胎肝和ＳＤ大鼠肝脏提取液１ｍｇ／３０ｇ体重，１日２次连续注射１５天。注射ＳＤ大鼠鼠肝比注射胎肝的荷癌小鼠寿命延长１．３倍，有的小鼠可无病存活６０天。结果表明ＳＤＲ—１对肿瘤细胞有较理想的抑制作用。     

胎盘型谷胱甘肽S转移酶mRNA在大鼠肝癌癌病变组织中的原位表达

应用原位杂交技术，观察了二乙基亚硝胺（ＤＥＮ）诱发大鼠肝癌前病变组织中胎盘型谷胱甘肽Ｓ转移酶（ＧＳＴ－Ｐ）ｍＲＮＡ的表达，结果显示，ＧＳＰ－ＰｍＲＮＡ主要在癌前病变肝组织中的变异灶及灶外卵圆形细胞内表达，且在变异灶间或同一灶内阳性细胞间表达程度不尽一致，而正常肝，再生肝组织中未见其表达，提示在分子水平上变异灶细胞及卵圆形细胞可能成为实验性肝癌的癌前期细胞。     

人胎肝与SD大鼠肝组织中的抑癌物对小鼠腹水型S—180细胞抑制…

ＳＤ大 鼠的肝组织提取液中存在着一种天然抑癌物（ＳＤＲ－１），其对小鼠腹水型Ｓ－１８０细胞生长的抑制效应，优于胎肝提取液，给荷癌小鼠每日分别腹腔注射胎肝和ＳＤ大鼠肝脏提取液１ｍｇ／３０ｇ体重，１日２次连续注射１５天。注射ＳＤ大鼠鼠肝比注射胎肝的荷癌小鼠寿命延长１．３倍，有的小鼠可无病存活６０天，结果表明ＳＤＲ－１对肿瘤细胞有较理想的抑制作用。     

铜锌超氧化物歧化酶基因对HepG2肝癌细胞增殖的抑制作用

目的：探讨超氧化物歧化酶（ＳＯＤ）对肝细胞癌增殖的抑制作用。方法：利用逆转录病毒载体介导的基因转移技术，将人铜锌ＳＯＤ基因导入人肝细胞系ＨｅｐＧ２细胞内，获得高表达，检测其对ＨｅｐＧ２细胞生物学特性的影响，结果：与对照组相比，ＳＯＤ基因转染后的肝癌细胞生长受到抑制，细胞体积变大，分裂象减少，Ｓ期细胞比率减少，软琼脂集落形成率低，裸鼠成瘤瘤体小。结论：铜锌ＳＯＤ基因具有抑制ＨｅｐＧ２肝癌细胞增殖的作     

肝癌发生过程中SE—S抗原与血管表型相关性的研究

目的：观察肝癌发生过程中ＳＥ－Ｓ抗原的表达及其与血管表型的关系，以及细胞外基质的作用。方法：利用化学致癌剂诱导的实验性大鼠肝癌组织进行组织学及免疫组织化学研究。结果：癌性肝窦不表达ＳＥ－Ｓ抗原；而表达第八因子相关抗原（ＦⅤⅢＲＡｇ）；细胞外基质过度表达且分布异常；基底膜沿着癌性肝窦形成。结论：肝癌形成过程中，发生了与细胞外基质积相关的窦的毛细血管化，导致ＳＥ－Ｓ抗原的表达丧失。     

猕猴桃果汁抗环磷酰胺致突变作用及其机制

目的；研究猕猴桃果汁抗环磷酰胺（ＣＰ）的致为作用及其可能的作用机制。方法：测定大鼠外周血双核淋巴细胞微核细胞率及肝中超氧化物歧化酶（ＳＯＤ）活性，还原型谷光甘肽（ＧＳＨ）、丙二醛（ＭＤＡ）含量。结果；猕猴桃果汁对ＣＰ诱发的大鼠外周血双核淋巴细胞微核细胞率有显抑制作用，能明显诱导大鼠肝ＳＯＤ活性增强，以及ＧＳＨ的含量增加，降低ＭＤＡ含量。大鼠外周血双核淋巴细胞微核细胞率与ＳＯＤ活性及ＧＳＨ含量呈明     

肝细胞生长刺激因子生物学活性研究

应用人肝癌ＳＭＭＣ－７７２１细胞系和大鼠 肝原代培养细胞，利用［＾３Ｈ］ＴｄＲ掺入的方法观察从人胎肝中提取的肝细胞生长刺激物质对肝源性细胞ＤＮＡ合成的影响。     

四氯化碳诱导大鼠肝纤维化过程中肝内细胞骨架蛋白表达的变化

探讨肝纤维化发生过程中，细胞骨架蛋白—结蛋白（Ｄｍ）和α－平滑肌肌动蛋白（α－ＳＭＡ）阳性细胞动态变化的规律以及这些阳性细胞之间的关系。方法用四氯化碳辅以低胆碱饲料诱导大鼠肝纤维化，应用免疫组化、电镜技术和图像分析方法对肝纤维化过程中出现的Ｄｍ和α－ＳＭＡ阳性细胞进行定位和定量研究。结果α－ＳＭＡ阳性细胞的变化几乎与Ｄｍ阳性细胞同步，两者于实验早期均有增生，但前者少于后者，至纤维间隔大量形成时（１２周），两者增生均达到最高峰，但前者多于后者，以后两者均逐步下降；从形态分析，Ｄｍ和α－ＳＭＡ阳性细胞主要为贮脂细胞（ＦＳＣ），部分卵圆细胞和新生胆管上皮细胞也表达此两种骨架蛋白。结论除了ＦＳＣ以外，α－ＳＭＡ和Ｄｍ阳性卵圆细胞也可能在肝纤维化发生发展中起重要作用。     

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.     

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.