砖茶对大鼠体重和血脂的影响

目的 :观察砖茶对大鼠体重和血脂的影响。方法 :用 2 %～ 2 .5 %砖茶按 2 ml/10 0 g给大鼠灌胃 5周 ,每隔 1天称体重 1次 ,断尾法取血 ,酶法测定血清中胆固醇 (TC)、甘油三酯 (TG)含量。结果 :高脂组和茶组大鼠血清胆固醇在 3周及 5周分别为 (185 .6 2± 10 0 .10 ) mg/dl、(190 .92± 99.15 ) mg/dl及 (185 .5 9± 88.4 9) mg/dl、(2 38.13± 12 5 .89) mg/dl明显高于对照组 (71.88± 14 .17) mg/dl、(82 .2 3± 34.10 ) mg/dl(P <0 .0 5 ) ;但茶组与高脂组中血清胆固醇含量无明显差异 (P >0 .0 5 )。茶组的体重增量低于高脂组 (P <0 .0 5 )。结论 :饮用 2 %～ 2 .5 %的茶水未见有降血脂作用 ,但有一定的抑制体重增长的作用     

不同糖油比例高脂饲料建立高脂血症大鼠模型的比较

目的 探讨不同糖油比例高脂饲料建立高脂血症大鼠模型的效果.方法 将40只大鼠分为空白对照组和3个高脂饲料(Ⅰ、Ⅱ和Ⅲ)组,每组10只,分别喂饲全价饲料和3种不同糖油比例的高脂饲料,共6周,每周定时称量体质量和检测大鼠血清总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)和高密度脂蛋白胆固醇(HDL-C).结果 3种配方的高脂饲料对大鼠体质量增长均无明显影响(P＞0.05).各配方组每周的大鼠血清TC含量、LDL-C含量及TC/HDL-C比值均高于空白对照组(P＜0.05或P＜0.01).高脂饲料Ⅱ组每周的大鼠血清TG含量均高于空白对照组(P＜0.01或P＜0.05),高脂饲料Ⅰ组大鼠第1～4周的血清TG含量高于空白对照组(P＜0.01或P＜0.05),高脂饲料Ⅲ组大鼠血清TG含量除第2周高于空白对照组外其余各周与空白对照组均无统计学差-(P＞0.05).结论 高脂饲料Ⅰ和高脂饲料Ⅱ均能快速稳定建立混合型高脂血症大鼠模型,高脂饲料Ⅱ效果更优;高脂饲料Ⅲ仅适用于建立高胆固醇血症大鼠模型.     

L-精氨酸抑制高脂喂饲大鼠动脉核因子-κB的合成

目的 :观察L -精氨酸对高脂喂饲大鼠动脉核因子 -κB的合成影响。方法 :雄性Wistar大鼠 4 5只 ,随机分为NC组 (普通饲料及饮水 ) ,CC组 (高胆固醇饲料及饮水 ) ,AC组 (高胆固醇饲料喂饲的同时饮水中含 3%L -精氨酸 ) ;每组 15只 ,喂饲 12周后采动脉血 ,处死大鼠取腹主动脉全长利用WesternBlot检测核因子 -κB的含量。结果 :AC组及CC组大鼠血清胆固醇浓度无明显差异 ,但高于NC组 (P <0 .0 1) ,AC组血清一氧化氮水平明显高于CC组 (P <0 .0 1) ,AC组核因子 -κB的合成与NC组无差异 (P >0 .0 5 ) ,但低于CC组 (P <0 .0 1)。结论 :L -精氨酸抑制大鼠动脉核因子 -κB合成的作用可能是其抑制高脂膳食诱发的动脉粥样硬化的分子机制之一。     

大鼠实验性高脂血症模型分析

目的结合临床高脂血症的分类,对大鼠实验性高脂血症模型进行分析,为更合理地选择高脂血症动物模型提供依据。方法采用高脂饲料喂养法建立大鼠高脂血症模型。观察喂养30d后大鼠体重、血清总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-C)的变化。结果高脂饲料组大鼠体重比正常对照组低,但差异无显著性(P0.05);血清TC明显高于对照组,差异有非常显著性(P0.01);TG、HDL-C明显低于对照组,差异有显著性(P0.05、P0.01)。结论高脂膳食不一定导致体重增加;高脂饲料喂养法所建立的大鼠高脂血症模型只符合高胆固醇血症和低高密度脂蛋白血症的特征,其是否只适用于高胆固醇血症和低高密度脂蛋白血症的研究,而不适用于高甘油三酯血症和混合型高脂血症的研究,有待进一步实验证实。     

大豆异黄酮对高血脂大鼠的抗氧化作用

目的观察大豆异黄酮对高血脂大鼠抗氧化的作用。方法选择成年雌性SD大鼠50只,体重300～340g,随机分为四组:空白对照组:喂饲基础饲料;高脂模型组:喂饲高脂饲料;大豆异黄酮低剂量组:喂饲高脂饲料 SI(300mg/kg·BW);大豆异黄酮高剂量组:喂饲高脂饲料 SI(600mg/kg·BW),喂饲6周,实验期未,空腹12h,5%戊巴比妥钠麻醉后,心脏取血制备血清及10%KCl肝组织匀浆,定血清及肝组织总胆固醇(TC)、甘油三酯(TG)、超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、总抗氧化能力(T—AOC)和谷胱甘肽过氧化物酶(GSH—PX)。结果与空白对照组比较,高脂模型组大鼠血清和肝脏中TC、TG含量高于空白对照组(P<0.01),与高脂模型组比较,SI剂量组大鼠肝脏、血清SOD、CAT、GSH—PX、T—AOC含量明显高于高脂组(P<0.05)。结论大豆异黄酮对高血脂大鼠具有明显的抗氧化作用。     

月见草油对大鼠血脂的调节作用

目的 :观察月见草油对高脂高胆固醇大鼠血脂的调节作用 ,为治疗高脂血症中药的开发提供资料。方法 :Wistar大鼠 5 0只按体重分为生理盐水组、高脂高胆固醇组 ,月见草油组按剂量分别为低剂量组 (2 5ml/kg)、中剂量组 (5ml/kg)、高剂量组 (10ml/kg)。每组 10只 ,分别于实验后第 30d测定血清总胆固醇 (TC)、甘油三脂 (TG)及高密度脂蛋白C(HDL -C)、HDL -C/TC比值、动脉硬化指数 (AI)。结果 :与高血脂组相比 ,月见草油各组大鼠血清TC含量显著降低 (P <0 0 5 ) ,HDL -C含量显著增高 (P <0 0 5 ) ,HDL -C/TC比值显著增高 (P <0 0 5 ) ,AI值显著降低 (P <0 0 5 ) ,本试验未见受试物对TG有影响。结论 :月见草油具有调节血脂的作用。     

亚麻籽对血脂的调节作用

以国产亚麻籽 (低、中、高 3种剂量 )喂饲Wistar大鼠 32d,观察其对大鼠血清总胆固醇 (TC)、三酰甘油(TG)、高密度脂蛋白胆固醇 (HDL C)、高密度脂蛋白胆固醇与总胆固醇的比值 (HDL C/TC)、低密度脂蛋白胆固醇(LDL C)、载脂蛋白 B(Apo B)及动脉硬化指标 (AI)的影响 ,并与高脂饲料组和基础饲料组进行比较。结果 ,亚麻籽粉低、中、高剂量组的TC和LDL C均显著低于高脂饲料组 (P <0 .0 5) ;中、高剂量组的TG、Apo B及AI显著低于高脂饲料组 (P <0 .0 5) ,HDL C/TC、AI显著高于高脂饲料组 (P <0 .0 5) ,而HDL C则与高脂饲料组无显著差异 (P >0 .0 5)。提示富含α 亚麻酸的国产亚麻籽具有良好的降低血脂的作用 ,值得进一步研究和开发     

甜茶素对大鼠实验性高脂血症防治作用的研究

目的 :研究甜茶素对大鼠血脂的影响。方法 :按《功能食品评价原理及方法》分别以 2 5 0、 5 0 0、 10 0 0 mg/ kg· d- 1 的剂量对饲高脂饲料的成年雄性 SD大鼠灌喂 4周并观察血清总胆固醇 (TC)、甘油三脂 (TG)和高密度脂蛋白胆固醇 (HDL-c)的变化。结果 :2 5 0 m g/ kg· d- 1 剂量组大鼠血清 TC和 TG显著低于高脂组 (P <0 .0 5 ) ,血清 HDL- c和 HDL- c/ TC显著高于高脂组 (P <0 .0 5 ) ;中、高剂量组则无降血脂作用。结论 :提示一定浓度的甜茶素具有明显的降血脂作用 ,可在防治高脂血症方面起一定的作用。     

葡多酚对大鼠脂质代谢紊乱的干预作用

目的:通过体内实验观察葡多酚(GP)对大鼠脂质代谢紊乱的干预作用。方法:Wistar成年雄性大鼠随机分成4组,分别为正常对照组、高脂模型组、葡多酚低剂量与高剂量组,每组10只。正常对照组给予基础饲料,其余3组喂饲高脂饲料诱发高脂血症。试验组动物每日经口灌胃给予40mg/kg、120mg/kg剂量的GP。于实验第31天测定血清甘油三酯(TG)、总胆固醇(TC)、高密度脂蛋白胆固醇(HDL-C)及HDL亚组分Ⅱ和亚组分Ⅲ的胆固醇含量(HDL2-C、HDL3-C);并计算低密度脂蛋白胆固醇(LDL-C)、低密度脂蛋白胆固醇与高密度脂蛋白胆固醇比值(LDL-C/HDL-C)、极低密度脂蛋白胆固醇(VLDL-C)和致动脉粥样硬化指数(AI)。结果:实验前、实验末期各组大鼠体重及实验末期体重增重均无差异。高脂模型组大鼠血清TG、TC、LDL-C、VLDL-C、LDL-C/HDL-C、AI均高于正常对照组(P<0.01或P<0.05),而HDL-C、HDL2-C、HDL2-C/HDL3-C均明显低于正常对照组(P<0.01)。与高脂模型组比较,葡多酚低剂量组与葡多酚高剂量组的TG、TC、LDL-C、VLDL-C降低(P<0.01或P<0.05);HDL2-C含量、HDL2-C/HDL3-C比值升高(P<0.01或P<0.05)。葡多酚高剂量组的LDL-C/HDL-C明显低于高脂模型组(P<0.01),AI低于高脂模型组(P<0.05)。结论:葡多酚具有调整血脂、改善脂质代谢紊乱的作用。     

喜之降胶囊调脂作用的实验研究

目的:为研究喜之降胶囊调节血脂的效果,观察了喜之降胶囊对高脂血症(HL)大鼠血清脂质和肝脏脂水平的影响.方法:实验根据大鼠体重、血脂水平进行随机分组,设正常对照组、高脂饲料对照组、喜之降胶囊低、中、高剂量组(分别为0.28、0.55、1.10g/(kg.bw)).受试物每天经口灌胃给予.4周末测定血清胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-C),同时测定肝脏TC、TG.结果:喜之降胶囊各组与高脂饲料对照组比较,大鼠血清TC、TG水平降低,差异有显著性(P＜0.05),喜之降胶囊对高脂大鼠肝脏胆固醇、甘油三酯有显著的降低作用(P＜0.01).结论:喜之降胶囊有降低高脂大鼠血脂水平的作用.     

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.