抗高血压药物对自发性高血压大鼠降压及逆转左室肥厚作用

目的使用４种抗高血压药物治疗自发发性高血压大鼠（ＳＨＲ）探讨血压和左室肥厚之间的关系。方法ＳＨＲ４２只雌性，周龄１６周，随机分为６组，（１）高血压基础对照组，在１６周时处死观察有关指标，（２）高血压对照组，（３）卡托普利组（１００ｍｇ／ｋｇ．ｄ＾－１）（４）培哚普利组（５ｍｇ／ｋｇ．ｄ＾－１）（５）双氢克尿塞组（１００ｍｇ／ｋｇ．ｄ＾－１）（６）普萘洛尔组（４０ｍｇ／ｋｇ．ｄ＾－１）给药１６周，观     

醛固酮合成成酶基因mRNA在肝纤维化大鼠体内的表达

探讨醛固酮合成酶基因ＣＹＰ１１Ｂ２在正常与肝纤维化大鼠肝纤维中的表达。方法４８只雄性Ｗｉｓｔａｒ大鼠，随机分为模型组与对照组。模型组：４０％ＣＣｌ４油２．５ｍｌ／ｋｇ．ｂ．ｗ．皮皮注射，每周３次，对照组：橄榄油２．５ｍｌ／ｋｇ．ｂ．ｗ．皮下注射。于第４、６、８、１０周处死大鼠，光镜下观察 组织形态学变化。ＲＴ－ＰＣＲ和原位杂交法检测ＣＹＰ１１Ｂ２的表达。结果与结论原位杂交法及ＲＴ－ＰＣＲ检测显示Ｃ     

四川蒙顶绿茶对大鼠食管癌预防阻断效果的实验研究

实验选用Ｗｉｓｔａｒ大鼠，分为三组（单亚组、实验组、空白组，每组各５０只），实验组大鼠开始即饮用２％的绿茶液（普通级别），持续至实验结束。２周后单亚组及实验组同时开始肌注甲基戊基亚硝胺，５ｍｇ／ｋｇ，每周１次，持续２０周。分４次处死动物（每６周各组处死１０只，第２４周处死剩余动物）。结果各阶段处死及食管癌总的发生率有明显差异，显示绿茶对大鼠食管癌的发生有预防阻断作用。     

熊去氧胆酸对实验性大鼠淤胆保护作用的研究

为建立大鼠淤胆模型，并观察熊去氧胆酸（ＵＤＣＡ）对其的作用。将雌性大鼠分成４组：对照组每只灌胃０．５％羧甲基纤维素（ＣＭＣ）；模型组每只灌胃雌二醇（ＥＥ）及氯丙嗪（ＣＰＺ）；大剂量ＵＤＣＡ组每日给ＥＥ及ＣＰＺ，同时灌胃ＵＤＣＡ６０ｍｇ／ｋｇ；小剂量ＵＤＣＡ组则给ＵＤＣＡ３０ｍｇ／ｋｇ。给药１４天，分别于第７及１４天处死５及１０只，停药７天后处死剩余５只，宰杀时取血测肝功能，称空腹体重及肝重，并取鼠肝标本切片光镜检查。结果：给药１周后模型组与对照组在脏器系数与生化指标方面有显著差异，２周后差异明显加大，且与ＵＤＣＡ剂量相关。本实验以ＥＥ及ＣＰＺ制成的大鼠淤胆肝损模型可用于临床肝内淤胆性疾病的基础研究；ＵＤＣＡ使大鼠免受肝毒性药物的攻击，故为临床用其治疗一些淤胆性肝病提供佐证     

一氧化氮复合猪肺泡表面活性物质治疗洗肺鼠的疗效

目的；研究不同浓度一氧化氮（ＮＯ）对肺猪泡表面活性物质（ＰＰＳ）替代治疗洗肺鼠疗效的影响。方法：６４只ＳＤ大鼠经反复肺灌洗至ＰａＯ２〉１３．４ｋＰａ和ＰａＣＯ２〈８．０ｋＰａ后，随机分成对照组、ＰＰＳ２５ｍｇ／ｋｇ组、ＰＰＳ５０ｍｇ／ｋｇ组、ＰＰＳ１００ｍｇ／ｋｇ组，各组按ＮＯ吸入与否再分成Ａ、Ｂ两亚组，观察用药后ＰａＯ２、ＰａＣＯ２、肺压力一容量环及肺实质密度变化。结果：组ＩＡ的ＰａＯ２、ＰａＣ     

兔激素性股骨头缺血坏死早期细胞学电镜观察

肾上腺糖皮质激素引起的骨坏死发病机理尚无一致看法，本实验通过给兔应用大剂量糖皮质激素、建立股骨头骨细胞坏死模型，采用透射电镜结合病理组织学观察股骨头、颈部的细胞结构变化，探讨该病的发病机制。一、材料与方法１．选用２４周龄以上成年健康日本白兔４５只，随机分为两组，实验组２５只，每周腹腔内注射强的松龙９０ｍｇ／ｋｇ。对照组２０只，每周腹腔内注射生理盐水１０ｍｇ，两组动物同样条件下喂养。实验动物来源于本校实验动物中心。２．用药后４、６、８周分批处死动物，取材进行电镜观察，同时进行病理组织学观察。取材将…     

尿磷酸二酯酶Ⅰ监测庆大霉素肾脏损伤的实验

Ｓｐｒａｇｕｅ－Ｄａｕｌｃｙ大鼠只，随机分为（１）中毒剂量组１３只，（２）治疗剂量组；（３）对照组８只。分别皮下注射庆霉（１）组４０ｍｇ／ｋｇ，（３）组５ｍｇ／ｋｇ，（３）组生理盐水等体积，观察用药前后血，尿标本测定尿磷桎一酯酶Ⅰ，Ｎ－乙酰－β－在葡萄糖苷酶，碱性磷酸酶，β２－微球蛋白的变化及大鼠肾组织病理学改变。     

大鼠内毒素性休克肺ET—1mRNA和bcl—2的表达及山莨菪碱,地 …

目的 探讨内皮素（ＥＴ）－１ｍＲＮＡ和原癌基因ｂｃｌ－２在大鼠内毒素性休克肺损伤中的作用及山莨菪碱、地塞米松对肺的保护作用。方法 ２４只ＳＤ大鼠随机分为４组（ｎ＝６）：Ⅰ组（对照组）静注等量生理盐水;Ⅱ组（休克组）静脉注射脂多糖（ＬＰＳ）５ｍｇ／ｋｇ;Ⅲ组静注山莨菪碱４ｍｇ／ｋｇ后０．５ｈ再静注ＬＰＳ５ｍｇ／ｋｇ;Ⅳ组静注地塞米松４ｍｇ／ｋｇ后０．５ｈ再静注ＬＰＳ５ｍｇ／ｋｇ。观察５ｈ后取肺组织测     

大黄壳聚糖片的减肥药效研究

目的：观察大黄壳聚糖片的减肥作用。方法：防胖试验中取Ｗｉｓｔａｒ大鼠４０只，随机分４组，每组１０只。每组在高脂饲料喂养基础上分别予以大黄壳聚糖片０．２ｇ／ｋｇ、０．４ｇ／ｋｇ、１．２ｇ／ｋｇ和蒸馏水灌胃，连续３０天，处死后称重及体内脂肪、计算脂体比；减肥试验中将肥胖模型大鼠按上法实验。结果：中、高剂量组大鼠体重、体内、脂肪重和脂体比与对照比较有明显下降。结论：大黄壳聚糖片的较好减肥作用。     

苯海索和利血平对大鼠脑单胺递质含量的影响

Ｓｐｒａｇｕｅ－Ｄａｗｌｅｙ大鼠２８只，随机分为４组：（１）对照组：ｎ＝１０，大鼠腹腔注射（ｉｐ）生理盐水（ＮＳ）２ｍｌ．ｋｇ＾－１；（２）利血平组：ｎ＝６，大鼠ｉｐ苯海索３．０ｍｇ．ｋｇ＾－１，每隔４ｈ给药１次，共５次；（４）苯海索加利血平组：ｎ＝６，大鼠ｉｐ苯海索３．０ｍｇ．ｋｇ＾－１，每隔４ｈ给药１次，共５次，最后一次给药时间同时ｉｐ利血平２．０ｍｇ．ｋｇ＾－１。各组动物均在最后一次给药后１     

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.