消脂饮对大鼠实验性高脂血症防治作用的研究

目的：探讨消脂饮对实验性高脂血症大鼠的影响。方法：采用饲喂高脂乳剂建立高脂血症模型,测定脂类代谢中生化指标,及血清、心肌中超歧过氧化物酶(SOD)活性和过氧化反应产物丙二醛(MDA)含量。结果：消脂饮各组与模型组比较均能明显的降低高脂血症大鼠血清中总胆固醇(TC)、甘油三酯(TG)和低密度脂蛋白(LDL-C)含量,降低血清和心肌中MDA含量,提高血清和心肌中SOD活性。结论：消脂饮对实验性高脂血症大鼠具有预防和治疗作用,其机理可能是通过清除自由基,提高机体抗氧化能力。     

中药红曲复方制剂降脂作用的实验研究

[目的]探讨中药红曲复方制剂对降低高脂血症模型大鼠血脂水平的疗效。[方法]采用高脂饲料喂养SD大鼠建立预防性高脂血症模型,将实验大鼠分成阴性对照组、模型对照组、阳性对照组、低剂量组、中剂量组和高剂量组。连续灌胃给药30d,观察中药红曲复方制剂对高脂血症大鼠血清甘油三酯(TG)、总胆固醇(TC)、低密度脂蛋白胆固醇(LDL-C)和高密度脂蛋白胆固醇(HDL-C)的影响。[结果]与阴性对照组比较,高脂饲料连续喂养30d后,模型对照组大鼠血清TG、TC和LDL-C显著升高(P0.01);与模型对照组比较,给药30d后,阳性对照组TG、TC和LDL-C显著降低(P0.05);低剂量组大鼠血清TG显著降低(P0.05),中剂量组和高剂量组血清TG、TC和LDL-C显著地降低(P0.01);各剂量组大鼠血清HDL-C无统计学差异(P0.05)。[结论 ]中药红曲复方制剂可有效控制并降低血脂水平。     

红珍珠血脂康胶囊的降血脂药效学研究

[目的]探讨以青藏高原和柴达木地区丰富的唐古特白刺、沙刺和枸杞等天然植物资源的果实为主要原料开发的红珍珠血脂康胶囊调节血脂的作用机制。[方法]以肥甘饮食造成高脂血症大、小鼠模型,观察红珍珠血脂康胶囊对总胆固醇(TC)、血清甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-C)含量等指标的影响。[结果]红珍珠血脂康胶囊能显著降低高脂血症小鼠和大鼠血清TC、TG(与高脂模型组比,P<0.05或 P<0.01)。能降低高脂血症大鼠血清丙二醛(MDA)含量(与高脂模型组比P<0.05或P<0.01);增强高脂血症大鼠红细胞超氧化物歧化酶(SOD)活力(与高脂模型组比P<0.05)。[结论]提示红珍珠血脂康胶囊具有预防高脂血症、改善动脉粥样硬化等作用。     

黄连解毒汤对治疗高脂血症大鼠血脂代谢的研究

目的 探究黄连解毒汤对高脂血症大鼠的脂类代谢及抗脂质过氧化作用的影响。方法 将SD大鼠随机分组,分为正常对照组、模型组、辛伐他汀组、黄连解毒汤低、中、高剂量,每组16只,除正常对照组以外,其它组大鼠连续喂养8周高脂饲料建立高脂血症模型。模型建立后测定大鼠血清中总胆固醇(TC)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)和三酰甘油(TAG)水平,测定血清中的超氧化物歧化酶(SOD)和谷胱甘肽过氧化酶(GSH-Px)活性及丙二醛(MDA)含量。结果 与模型组相比,黄连解毒汤高、中、低剂量组能降低大鼠血清TC、TG、LDL-C、MDA含量,显著提高HDL-C含量和提高SOD、GSH-Px活性。结论 黄连解毒汤能够降低高脂血症大鼠血脂,提高机体抗脂质过氧化,高剂量组效果更佳。     

槭叶草对高脂血症大鼠抗氧化作用的研究

目的:探讨槭叶草对高脂血症大鼠的抗氧化作用。方法:将60只wister大鼠随机分为正常对照组10只,造模组50只。造模组给予高脂饲料15d,造模成功后随机分为高脂模型组和槭叶草大剂量组、中剂量组、低剂量组,阳性药物对照组,分别给予生理盐水和槭叶草提取物大、中、低剂量,辛伐他汀灌胃20d,观察血清及肝脏中丙二醛(malondialde- hyde,MDA)及超氧化物歧化酶(superoxide dismutase,SOD)水平。结果:模型组与空白组比较,血清及肝脏中MDA含量明显升高(P<0．01),SOD活性明显降低(P<0．01),槭叶草大、中剂量组与高脂模型组比较,血清及肝脏中MDA含量显著降低(P<0．05,P<0．01),SOD的活性增强(P<0．05,P<0．01),结论:槭叶草能够改善高脂血症大鼠的抗氧化能力。     

毛平车前活性部位调节血脂作用的研究

目的:研究毛平车前活性部位(PDMAF)调节血脂的作用.方法:小鼠腹腔注射蛋黄乳剂造成急性高脂血症模型,观察PDMAF对小鼠高脂血症的预防作用.以大鼠食饵性高脂血症为模型,给予高脂饲料的同时给予PDMAF,连续28 d.测定血清中胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)、丙二醛(MDA)、一氧化氮(NO)含量和超氧化物歧化酶(SOD)活性,肝组织中TC与TG含量以及肝指数.观察PDMAF对高脂血清损伤的人脐静脉内皮细胞株(ECV304)细胞释放NO的影响.结果:PDMAF 30,60 mg/kg 明显降低蛋黄乳高脂血症小鼠的血清TC和TG.PDMAF 60 mg/kg 明显降低大鼠食饵性高脂血症模型的肝指数;PDMAF 30,60 mg/kg 明显降低大鼠食饵性高脂血症模型的血清TC、TG、LDL-C、MDA含量、TC/HDL-C比值,肝组织的TC与TG,并明显升高血清HDL-C和NO含量以及SOD活性.PDMAF 10,30,100 mg/L 明显逆转高脂血清损伤的ECV304细胞释放NO.结论:毛平车前具有显著的调血脂和抗氧化作用,改善高脂血症大鼠血管内皮的功能,提示其可用于防治高脂血症.     

羊栖菜对高脂血症大鼠降血脂和抗氧化作用研究

目的探讨羊栖菜在高脂血症大鼠中的抗氧化作用机制。方法健康雌性Wistar大鼠40只,应用高脂饲料喂养方法建立高脂血症动物模型,羊栖菜粉饲料喂养干预治疗。氧化酶法检测大鼠血清三酰甘油(TG)、总胆固醇(TC)、低密度脂蛋白(LDL)和高密度脂蛋白(HDL)水平,硫代巴比妥酸法检测血清脂质过氧化物丙二醛(MDA)水平,硝酸还原酶法检测血清一氧化氮(NO)含量,黄嘌呤氧化酶法测定血清超氧化物歧化酶(SOD)活性,化学比色法检测血清谷胱甘肽过氧化物酶(GSH-PX)的活性。结果辛伐他汀组和羊栖菜治疗组动物血清TG、TC和LDL水平较模型对照组显著下降而HDL水平显著高于模型对照组(P<0.05)。辛伐他汀组和羊栖菜治疗组动物血清MDA和NO水平较模型对照组均显著下降(P<0.05),而血清SOD和GSH-PX活性均显著高于模型对照组(P<0.05)。但羊栖菜治疗组与辛伐他汀组比较,上述指标均无明显差异(P>0.05)。结论羊栖菜活性成分可能通过增强SOD和GSH-PX的活性,发挥抗氧化作用而影响脂质代谢。     

紫心甘薯对高脂血症大鼠脂质代谢及氧化应激的影响

目的:观察紫心甘薯对高脂血症大鼠脂质代谢及氧化应激的影响,并探讨其可能的作用机制.方法:40只雄性SD大鼠按体重及血脂水平分为4组:正常对照组、高脂对照组、紫心甘薯高剂量组和紫心甘薯低剂量组,分别饲以不同饲料.于第3周和第6周末测血清脂质水平及氧化应激指标.结果:①第3周末,紫心甘薯高剂量组大鼠血清总胆固醇(TC)、甘油三酯(TG)显著低于高脂对照组;紫心甘薯低剂量组大鼠血清TG显著低于高脂对照组,而TC较高脂对照组无显著性差异.这些变化一直持续到第6周末.②第3周末,紫心甘薯高、低剂量组血清高密度脂蛋白胆固醇( HDL-C)均显著高于高脂对照组,而低密度脂蛋白胆固醇(LDL-C)和动脉粥样硬化指数(AI)则显著低于高脂对照组.这些变化一直持续到第6周末.③第6周末,紫心甘薯高、低剂量组血清超氧化物歧化酶(SOD)活性较高脂对照组明显增高,而丙二醛(MDA)水平明显降低;肝脏超氧化物歧化酶(SOD)、还原型谷胱甘肽(GSH)水平显著高于高脂对照组,而MDA水平则显著低于高脂对照组.结论:紫心甘薯具有明显降血脂的功效,并能有效改善高脂血症大鼠氧化应激.     

松针提取液对高脂膳家兔血脂与脂质过氧化的影响

目的:探讨松针提取液对高脂膳家兔血脂及脂质过氧化的影响。方法:经8周高脂乳剂饲养后,选高脂血症造模成功的家兔15只,随机分为对照组、松针提取液低剂量组(治疗Ⅰ组)、松针提取液高剂量组(治疗Ⅱ组)。取血测定总胆固醇(TC)、甘油三酯(TG)、丙二醛(MDA)、超氧化物歧化酶(SOD)活性和总抗氧化活力等指标。结果:经松针提取液治疗后,血清TC、TG及MDA含量降低,SOD活性及总抗氧化活力升高,与对照组比较,治疗Ⅱ组的降脂作用和抗氧化能力更显著。结论:松针提取液对高脂膳家兔有降血脂和抗脂质过氧化的作用。     

克氏螯虾壳聚糖对实验性大鼠血脂水平及动脉粥样硬化形成的影响

目的:探讨克氏螯虾壳聚糖对实验性高脂血症大鼠血脂水平及动脉粥样硬化形成的影响.方法:将40只大鼠随机分为对照组,高脂模型组,克氏螯虾壳聚糖低、中、高剂量组,每组8只.实验至第9周末,检测血清总胆固醇(total cholesterol,TC)、三酰甘油(triglyceride,TG)、低密度脂蛋白(low density lipoprotein-cholesterol,LDL-c)、高密度脂蛋白(high density lipoprotein-cholesterol,HDL-c)和丙二醛(malonaldehyde, MDA)的含量及超氧化物歧化酶(superoxide dismutase,SOD)活性.同时取主动脉作病理形态学观察.结果:与高脂模型组比较,克氏螯虾壳聚糖组大鼠主动脉壁厚度明显降低,泡沫细胞数量明显减少;血清TC、TG、LDL 、MDA含量明显降低, HDL、SOD含量明显提高(P<0.01).结论:克氏螯虾壳聚糖对实验性高脂血症大鼠有较好的降血脂、抗脂质过氧化损伤作用,可减缓大鼠动脉粥样硬化的形成.     

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.