肝微粒体制备与细胞色素P450含量测定

对肝匀浆经一次高速离心制成的Ｓ－９部分和聚乙二醇凝集两次高速离心制成的微粒体组分进行了细胞色素Ｐ４５０含量测定，结果显示Ｓ－９部分蛋白质含量，细胞色素Ｐ４５０总量的明显高于微粒体组分，但细胞色素Ｐ４５０比含低于微粒体组合。     

N—甲氧基,β—（对—苯酚基甲烷）吡咯烷酮诱导的犬肝微粒体细胞色素…

三甲双酮是评价肝微粒体药代谢酶功能的一个重要指标。它主要由苯巴比妥类诱导的肝和肝微粒体细胞色素Ｐ４５０亚型代谢。本研究用Ｎ－甲氧基，β－（对－苯酚基甲烷）吡咯烷酮（Ｎ＿ＭＰＭＰ）作为细胞色素Ｐ４５０诱导剂，测定犬肝微粒体Ｐ４５０总量及Ｐ４５０亚型２Ｂ，３Ａ的含量；同时用肝微粒体重组系统测定Ｐ４５０单加氧酶活力，并用免疫抑缺点试验确定细胞色素Ｐ４５０亚型，２Ｂ和３Ａ对三甲双酮代谢的影响。结果表明；经     

N－甲氧基，β－（对－苯酚基甲烷）吡咯烷酮诱导的犬肝微粒体细胞色素P450亚型对三甲双酮代谢的影响

三甲双酮是评价肝微粒体药物代谢酶功能的一个重要指标。它主要由苯巴比妥类诱导的肝微粒体细胞色素Ｐ４５０亚型代谢。本研究用Ｎ－甲氧基，β－（对－苯酚基甲烷）吡咯烷酮（ＮＭＰＭＰ）作为细胞色素Ｐ４５０诱导剂，测定犬肝微粒体Ｐ４５０总量及Ｐ４５０亚型２Ｂ，３Ａ的含量；同时用肝微粒体重组系统测定Ｐ４５０单加氧酶活力，并用免疫抑制试验确定细胞色素Ｐ４５０亚型，２Ｂ和３Ａ对三甲双酮代谢的影响。结果表明：经Ｎ－ＭＰＭＰ诱导的犬Ｐ４５０，Ｐ４５０２Ｂ和Ｐ４５０３Ａ含量都增加；苄甲苯异丙胺Ｎ－脱甲基和４－硝基甲醚０－脱甲基活力增高；在重组系统，针对犬Ｐ４５０２Ｂ的多克隆抗体可部分抑制三甲双酮和平甲苯异丙胺Ｎ－脱甲基活动。本研究结果提示，就三甲双酮Ｎ－脱甲基活力这一点上，大鼠和犬间差别不大；与三甲双酮代谢有关的Ｐ４５０亚型是Ｐ４５０２Ｂ。     

复方丹参片、阿斯匹林和潘生丁对细胞色素P－450的影响

通过测定大鼠肝微粒体细胞色素Ｐ－４５０总量及通过微粒体重组系统测定Ｐ－４５０亚型中较特异的催化反应，探讨了复方丹参片、阿斯匹林和潘生丁对Ｐ－４５０及其亚型的影响。本实验结果提示，实验中所用３种药物在引起Ｐ－４５０总量减少的情况下，可选择性诱导和前致癌物活化有关的Ｐ－４５０（１Ａ和２Ｅ），诱导作用主要发生在雄性。     

复方丹参片,阿斯匹林和潘生丁对细胞色素P—450的影响

通过测定大鼠肝微粒体细胞色素Ｐ－４５０总量及通过微粒体重且系统测定Ｐ－４５０亚型中较特异的催化反应，探讨了复方丹参片，阿斯匹林和潘生丁对Ｐ－４５０及其亚型的影响，本实验结果提示，实验中所用３种药物在引起Ｐ－４５０总量减少的情况下，可选择性诱导和前致癌物活化有关的Ｐ－４５０（１Ａ和２Ｅ），诱导作用主要发生在雄性。     

高蛋白饮食对大鼠肝P－450及细胞形态的影响

目的：阐明饮食因素对药物氧化代谢影响的机制。方法：ＳＤ大鼠随机分为４组，分别以对照饲料、高蛋白、高脂肪、高碳水化合物饲料喂养，２１ｄ取材测定肝微粒体蛋白、细胞色素Ｐ－４５０含量，电镜观察肝细胞形态，ＳＤＳ－聚丙酰胺凝胶电泳研究微粒体蛋白的分子量。结果：高蛋白饮食使分子量５７０００～５８０００的肝微粒体蛋白和细胞色素Ｐ－４５０含量及肝细胞浆内滑面内质网表面积增加。结论：高蛋白饮食增高肝酶水平对药物氧化代谢起重要作用。     

大鼠心肌组织与肝脏组织中细胞色素P-450的含量测定

对大鼠心肌组织中细胞色素Ｐ ４５０含量的测定国内未见报道。本方法利用双光束紫外分光光度计测定了正常大鼠的心肌组织中Ｐ ４５０的含量，并与肝组织Ｐ ４５０的含量进行比较，以期探讨细胞色素Ｐ ４５０与心脏疾病的关系。Ｗｉｓｔａｒ大鼠８只，雄性，体质量２０...     

依诺沙星与诺氟沙星对照治疗伤寒80例临床分析

作者用依诺沙星治疗伤寒41例,诺氟沙星作为对照用药治疗伤寒39例.80例全为住院病人,血培养阳性率83.75%(67/80),按随机分组,两组间的基本情况大致相仿,依诺沙星片0.4g,每日2次,诺氟沙星片0.4g,每日3次,疗程均为14d.结果,依诺沙星组有效率97.67%,诺氟沙星组为87.90%,两组间有非常显著差别(P<0.01).治疗1周后两组细茵均转阴,平均退热时间依诺沙星组比诺氟沙星组短.对治疗有效的病例,随访2周均无复发.不良反应两组相仿,表现为便秘和白细胞下降及皮疹各1例.体外药敏试验及最低抑茵浓度测定依诺沙星与诺氟沙星相近.     

除草剂草甘膦对大鼠肝微粒体酶及脂质过氧化作用的影响

通过体内和体外试验，研究了草甘膦对大鼠肝微粒体酶、脂质过氧化作用及还原型谷胱甘肽的影响。体内试验结果表明：草甘膦能显著诱导增加微粒体细胞色素Ｐ（４５０）含量，与对照组比较［ｘ±ｓ（下同）分别为（０．６８±０．１２）、（０．５９±０．０９）μｍｏｌ／ｇ］具有显著意义（Ｐ＜０．０５）。并且可使还原型谷胱甘肽的含量显著增加，与对照组比较［分别为（１２８１．５±７４．０）、（１１７８．９±２２．０）μｇ／ｇ］具有极显著意义（Ｐ＜０．０１）。体外试验结果表明：草甘膦在１０（－８）～１０（－４）ｍｏｌ／Ｌ浓度范围内对细胞色素Ｐ（４５０）无明显影响，但能显著抑制脂质过氧化作用，在１０（－７）～１０（－４）ｍｏｌ／Ｌ时可增加还原型谷胱甘肽的含量，且呈明显剂量效应关系。     

对位取代苯胺形成P—450—MI络合物构效关系的判别分析研究

本文测定了一组对位取代苯胺与未经处理或经苯巴比妥诱导的大鼠肝微粒体形成细胞色素Ｐ－４５０代谢中间体络合物的活性，并用Ｆｉｓｈｅｒ线性判别分析研究了它们的构效关系。结果表明，除４，４’－二氨基二苯醚与经苯巴比妥诱导的大鼠肝微粒体形成细胞色素Ｐ－４５０代谢中间体络全物的活性被错分外，其余的对位取代苯胺均被正确分类，脂溶性较大和拉电子能力较对位取代基对形成代谢中间体络合物有利；经苯巴比妥诱导的大鼠肝微粒     

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.