迎春花茎叶提取液耐缺氧作用的实验研究

目的：研究迎春花茎叶提取液耐缺氧作用.方法：①采用常压耐缺氧法;②对抗异丙肾上腺素法;③断头喘息法;④游泳实验法.结果：迎春花茎叶提取液显著延长常压缺氧条件下小白鼠的存活时间;显著延长皮下注射异丙肾上腺素小白鼠在常压缺氧条件下的存活时间;显著延长断头小白鼠的喘息时间;显著延长小白鼠的游泳时间.结论：迎春花茎叶提取液具有耐缺氧作用.     

六月雪水提取物耐缺氧作用的研究

目的：分析六月雪水提取物对小鼠耐缺氧作用。方法：采用常压耐缺氧实验；快速断头实验；异丙肾上腺素增加心肌耗氧量实验。结果：六月雪水提取物能显著延长常压耐缺氧条件下小鼠的存活时间；能显著延长断头小鼠的喘息时间；能非常显著延长皮下注射异丙肾上腺素的小鼠在常压缺氧条件下的生存时间。结论：六月雪水提取物具有显著的耐缺氧作用。     

黄花倒水莲水提取物耐缺氧作用的研究

目的：研究黄花倒水莲水提取物对小鼠耐缺氧作用。方法：采用常压耐缺氧实验；快速断头实验；异丙肾上腺素增加心肌耗氧量实验。结果：黄花倒水莲提取物能显著延长常压耐缺氧条件下小鼠的存活时间；能显著延长断头小鼠的喘息时间；能非常显著延长皮下注射异丙肾上腺素的小鼠在常压缺氧条件下的生存时间。结论：黄花倒水莲水提取物具有显著的耐缺氧作用。     

淫羊藿水提取液的耐缺氧作用

目的 :探讨淫羊藿水提取液对小鼠耐缺氧模型的耐缺氧作用。方法 :采用常压耐缺氧法、对抗异丙肾上腺素法、断头法及失血性休克法研究淫羊藿水提取液对小鼠耐缺氧作用的影响。结果 :淫羊藿水提取液显著延长常压耐缺氧条件下小鼠的存活时间 (P <0 .0 1) ;显著延长皮下注射异丙肾上腺素的小鼠在常压缺氧条件下的生存时间 (P <0 .0 1) ;显著延长失血性休克小鼠的心跳时间 (P <0 .0 1) ;显著延长对断头小鼠的呼吸时间 (P <0 .0 1)。结论 ::淫羊藿水提取液对缺氧小鼠模型有明显的耐缺氧作用     

黑青稞籽皮提取物提高小鼠耐缺氧及抗疲劳能力的初步研究

目的研究黑青稞籽皮提取物对小鼠耐缺氧及抗疲劳能力的影响。方法采用小鼠动物实验,分别研究黑青稞籽皮提取物对常压耐缺氧、亚硝酸钠中毒、急性脑缺血小鼠存活时间的影响以及通过对异丙肾上腺素增加心肌耗氧、失血性休克小鼠心搏时间的影响的观察评价其耐缺氧。利用负重游泳实验评价其抗疲劳功能。结果与生理盐水组比较,黑青稞籽皮提取物在3.5 g/kg剂量条件下显著延长常压耐缺氧小鼠的存活时间(P<0.01),在4.0 g/kg剂量条件下能够有效延长断头小鼠喘气时间(P<0.05),在2.0 g/kg剂量条件下能够延长小鼠负重游泳时间(P<0.05)。结论黑青稞籽皮提取物具有提高小鼠耐缺氧及抗疲劳能力的作用。     

金樱根醇提取液耐缺氧作用的研究

目的：研究金樱根醇提取液的耐缺氧作用。方法：采用常压耐缺氧法、对抗特异性心肌缺氧法、对抗脑缺血缺氧法、游泳实验法观察金樱根醇提取液对小鼠存活时间的影响。结果：金樱根醇提取液明显延长小鼠常压缺氧、特异性心肌缺氧、脑缺血缺氧及游泳的存活时间。结论：金樱根醇提取液有显著耐缺氧作用。     

枸杞山茱萸水煎液对小鼠抗疲劳和耐缺氧作用的研究

目的枸杞山茱萸水煎液对小鼠的抗疲劳和耐缺氧作用的研究。方法本研究采用游泳法测定小鼠的游泳持续时间,常压耐缺氧法测定小鼠的存活时间,断头缺血缺氧法测定小鼠张口喘气时间和呼吸次数。结果枸杞山茱萸水煎液连续灌胃给药,能显著延长小鼠的游泳时间、常压缺氧下的存活时间和断头喘气时间,增加呼吸次数(P<0.05,P<0.01)。结论枸杞山茱萸水煎液能增强小鼠的抗疲劳和耐缺氧能力,提高动物机体的应激反应能力。     

异丙酚增加小鼠对缺氧的耐受

目的　观察异丙酚对缺氧小鼠的影响。方法　采用常压耐缺氧法、断头法及结扎双侧颈总动脉法研究了异丙酚对缺氧小鼠的影响。结果　与生理盐水组比较 ,异丙酚 30、15和 7.5mg·kg-1均能延长常压耐缺氧条件下小鼠的存活时间 ,延长断头小鼠的呼吸时间 ,降低急性脑缺血小鼠 2h内的死亡率 ,其中 30和 15mg·kg-1组与生理盐水组相比差异有显著性 (P <0 .0 5或 0 .0 1)。结论　异丙酚对小鼠脑缺氧有保护作用     

益智仁药理作用的初步研究

益智仁氯仿提取物和益智仁水提物具有中枢抑制作用,均能明显提高戊巴比妥纳阈下剂量的小白鼠的睡眠率。具有镇痛作用和提高小白鼠常压下耐缺氧存活时间。益智仁氯仿提取物能提高异丙肾上腺素作用下的小白鼠常压下耐缺氧存活时间。二种提取物均能使幼年大白鼠脾脏、胸腺缩小,并能降低肾上腺内维生素C含量     

参苓白术散对小鼠耐缺氧及抗运动性疲劳作用研究

目的观察参苓白术散水提物的抗疲劳、耐缺氧作用。方法采用小鼠力竭游泳实验和小鼠常压耐缺氧实验,观察连续14 d灌胃给予参苓白术散水提物对小鼠的抗疲劳和耐缺氧能力的影响,并测定用药后各组小鼠负重游泳时间、耐缺氧时间、体内肝糖原贮备量、运动后血中尿素氮、血乳酸含量。结果参苓白术散水提物40.0、20.0 g/kg剂量均可显著延长小鼠常压耐缺氧时间和负重游泳时间（P〈0.05）,显著降低小鼠血中乳酸及尿素氮含量（P〈0.05）,显著增加小鼠体内肝糖原储备量（P〈0.05）。结论参苓白术散水提物能显著增强小鼠的抗疲劳和耐缺氧能力。     

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.