短毛五加总甙抗实验性心律失常作用

在氯化钡、乌头碱、哇巴因、肾上腺素诱发大鼠或家兔心律失常及氯仿诱发小鼠心室颤动等动物模型上,观察短毛五加总甙(AGVPS)的防治作用。结果表明,AGVPS对五种模型均有显著的抗心律失常作用。     

短毛五加总甙对结扎冠状动脉家兔心肌梗塞范围的影响

本文用生化、电生理结合形态学方法探讨短毛五加总甙(AGVPS)对结扎冠状动脉家兔心肌缺血程度和范围的影响。实验表明,AGVPS 降低血压、减慢心率,降低血清乳酸浓度,减少心电图 ST 段偏移程度和病理性 Q 波发生数,NBT 染色显示缩小心肌梗塞范围,与血清 CPK 活性测定结果相吻合。     

短毛五加总甙、异搏定、心得安对小鼠心肌营养性血流影响的对比研究

本文以小鼠心肌摄取~(86)铷(~(86)Rb)作指标,用心得安和异搏定作对照,对比观察短毛五加总甙(AGVPS)对异丙肾上腺素和氯化钙的对抗效应。结果显示:AGVPS不但明显增加小鼠心肌摄取~(86)Rb,而且显著对抗氯化钙增加小鼠心肌摄取~(86)Rb的作用,与异搏定作用相似。     

黄花倒水莲总皂苷的调脂作用

目的：利用大鼠食饵性高脂血症模型研究黄花倒水莲总皂苷(PTS)调脂作用。方法：预防性给药时，连续给予高脂饲料21d后形成高脂模型，给高脂饲料同时给予黄花倒水莲总皂苷，21d后改用普通饲料，继续给药14d，分别于第21天和第35天测定血清中TC、TG、MDA含量。治疗性给药时，连续给予SD大鼠高脂饲料，21d后形成高脂模型，停止造模，给予普通饲料并给予PTS，给药14d后测定血清中TC、TG、HDL-C、LDL-C、MDA含量和SOD活性。结果：预防性给药时大鼠造模21d后TC、TG和MDA含量升高，PTS高剂量能降低血清中TC、TG和MDA含量；继续给药14d后，PTS高剂量组能明显降低血清中TC、TG和MDA含量。在治疗性给药中，高剂量组能显著降低血清TC、TG、LDL-C和MDA含量并显著升高HDL-C含量和SOD活性。结论：高脂饲料喂养21d即可形成高脂模型；黄花倒水莲总皂苷对大鼠血清TC、TG及MDA含量均有降低作用并呈剂量相关性。黄花倒水莲总皂苷具有调节血脂的作用和一定的抗氧化作用。     

橄榄油的降脂作用及其作用机制研究

目的探讨橄榄油的降血脂作用及其作用机制。方法将大鼠随机分为基础饲料喂养组、高脂饲料喂养组和高脂饲料加橄榄油组,喂养8周后分别测定其血清中TG、TC、LDL-C、apoA1、apoB、MDA含量、AI及肝脏组织中的TG、TC含量。结果大鼠血清TG、TC、LDL-C、apoA1、apoB、MDA、AI和肝脏组织中TC、TG含量水平均呈现出高脂饲料喂养组>高脂饲料加橄榄油喂养组>基础饲料喂养组(P<0.05)。结论橄榄油能通过调节大鼠的LDL-C、apoA1、apoB、MDA含量和AI降低大鼠的血脂水平。     

橄榄油对高血脂大鼠降脂作用的研究

目的探讨橄榄油对高脂血症大鼠的降脂作用。方法将大鼠随机分为基础饲料喂养组、高脂饲料喂养组和高脂饲料加橄榄油组，喂养8周后分别测定其血清中TG、TC、LDL-C、apoAl、apoB、MDA含量、AI及肝脏组织中的TG、TC含量。结果大鼠血清TG、TC、LDL-C、apoAl、apoB、MDA含量、AI和肝脏组织中TC、TG水平均呈现出高脂饲料喂养组〉橄榄油喂养组〉基础饲料喂养组（P〈0．05）。结论橄榄油能降低高血脂大鼠血清、肝脏组织中的脂和脂类代谢物水平。     

酸浆鲜果对实验性高脂血症大鼠的保护作用

目的 探讨酸浆鲜果的降低血脂作用.方法 雄性Wistar大鼠50只,随机分为5组,每组10只,分别为正常对照组,高脂模型对照组,酸浆鲜果低、中、高剂量组.正常对照组喂基础饲料,其余4组喂高脂饲料,3个剂量组同时每天以10、20、30 g/(kg·d)酸浆鲜果匀浆灌胃.第20天测定各组动物血清总胆固醇(TC)、甘油三脂(TG)、低密度脂蛋白胆固醇(LDL-C)和高密度脂蛋白胆固醇(HDL-C)的浓度.结果 与模型组比较,高剂量组大鼠血清LDL-C和 TG含量降低,具有统学意义(P<0.05或P<0.01);中、高剂量组大鼠血清HDL-C含量升高,具有统学意义(P<0.05);中、高剂量组大鼠血清TC含量降低,但差别不显著.结论 酸浆鲜果可降低高血脂大鼠血清LDL-C和 TG含量,升高血清HDL-C的含量,因此具有较好的降血脂作用.     

大豆异黄酮对实验性大鼠脂肪肝的治疗作用

[目的]探讨大豆异黄酮对高脂饮食诱导大鼠脂肪肝的治疗作用．[方法]取50只SD大鼠随机分成5个组,即正常组、高脂模型组、大豆异黄酮小、中、大剂量组．除正常组外,其余各组给予高脂饮食诱导建立大鼠脂肪肝模型,测定大鼠血清总胆固醇（TC）及甘油三酯（TG）含量,计算肝脏质量分数,观察肝脏病理学变化．[结果]大豆异黄酮可降低脂肪肝大鼠肝脏指数及血清TC,TG水平,并可明显改善肝组织的病理损伤．[结论]大豆异黄酮对实验性大鼠脂肪肝有明显的治疗作用．     

沙苑子提取物降脂作用实验研究

目的观察沙苑子提取液对实验性高脂血症大鼠血脂及肝脏中脂肪(粗)含量的影响。方法用Wistar大鼠建立高脂血症动物模型,用酶学的方法观察各组大鼠血清中甘油三酯(TG)、总胆固醇(TC)、低密度脂蛋白胆固醇(LDL-c)及高密度脂蛋白胆固醇(HDL-c)含量的变化。用索式法测定各组大鼠肝脏中脂肪(粗)含量。结果沙苑子水提取液、油提取液、50％乙醇提取液和95％乙醇提取液大剂量(90g／kg)使用15d,可显著降低实验性高脂血症大鼠血中TC、TG的含量及肝脏中脂肪(粗)的含量,水提液小剂量组(20g／kg)和油提液中剂量组(45g／kg)可显著升高血清中HDL-c的含量,其作用优于对照药物绞股蓝总甙组,与高脂模型组比较有极显著性差异(P＜0.001)。结论沙苑子提取液有降低实验性高脂血症大鼠血清中TG、TC、LDL-c的含量和升高HDL-c作用;同时可降低高脂血症大鼠肝脏中脂肪(粗)含量。     

二陈汤对高脂饮食大鼠血脂及胰岛素抵抗的影响

目的:观察化痰方(二陈汤)对高脂饮食大鼠血脂及胰岛素抵抗的影响。方法:30只健康成年雄性大鼠按照随机数字表法分为正常组、高脂组和化痰组各10只,正常组给予正常饲料喂养,高脂组和化痰组给予高脂饲料喂养14周,化痰组第11周起给予二陈汤灌胃4周。在第14周末进行葡萄糖耐量实验(OGTT)和胰岛素耐量实验(ITT),14周后处死大鼠,检测并比较各组血脂TC、TG的含量及第14周各组大鼠OGTT结果和ITT结果。结果:与正常组比较,高脂组大鼠血清中的TC和TG含量均明显升高(P0.01);与高脂组比较,化痰组大鼠血清中的TG含量明显降低(P0.01),TC有所降低,差异也有统计学意义(P0.05)。高脂组的空腹血糖明显高于正常组(P0.05),而化痰组空腹血糖与正常组的比较差异无统计学意义(P0.05);糖负荷后,高脂组的各个时间点的血糖均明显高于正常组(P0.05或P0.01),而化痰组除了糖负荷后120 min的血糖明显高于正常组外(P0.01),其余时间点与正常组的比较差异均无统计学意义(P0.05)。腹腔注射胰岛素后,化痰组各时间点血糖下降幅度均明显高于高脂组,30 min时高脂组血糖降低18%,而化痰组大鼠降低26%。结论:二陈汤能够降低高脂饮食大鼠血脂的含量,改善胰岛素抵抗,值得在临床上推广使用。     

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.