维生素E,普罗布考对溶血卵磷脂引起的脑微血管细胞损伤和增殖的…

目的：研究维生素Ｅ（ＶＥ）、普罗布考（ＰＲＢ）对溶血卵磷脂（ＬＰＣ）引起的脑微血管内皮细胞（ＢＣＭＥＣ）损伤的保护作用和脑微血管平滑肌细胞（ＢＣＭＳＭＣ）增殖的抑制作用。方法：以乳酸脱氢酶（ＬＤＨ）释放及结晶紫染色法分别测定ＢＣＭＥＣ损伤和ＢＣＭＳＭＣ的增殖。结果：ＶＥ５～５０μｍｏｌ／Ｌ时显著抑制ＬＰＣ５０ｎｍｏｌ／Ｌ引起的ＢＣＭＥＣ释放ＬＤＨ，释放率下降至（３６．８±１．０）％～（１６．２±２．９）％；显著抑制ＬＰＣ１０ｎｍｏｌ／Ｌ引起的ＢＣＭＳＭＣ增殖，抑制率为（３７．６±７．０）％～（６１．３±０．６）％。ＰＲＢ５～５０μｍｏｌ／Ｌ时显著抑制ＬＰＣ５０ｎｍｏｌ／Ｌ引起的ＢＣＭＥＣ释放ＬＤＨ，释放率下降至（３４．２±３．３）％～（１９．１±２．４）％；显著抑制ＬＰＣ１０ｎｍｏｌ／Ｌ引起的ＢＣＭＳＭＣ增殖，抑制率为（４０．９±２．４）％～（４７．０±３．７）％。结论：ＶＥ和ＰＲＢ对ＬＰＣ引起的ＢＣＭＥＣ损伤有保护作用，对ＢＣＭＳＭＣ增殖有抑制作用。     

安定导致小鼠大脑的线粒体氧应激损伤

目的 探讨安定对大脑神经元产生毒副作用的分子机制。方法以１０ ｍｇ／ｋｇ·ｂ．Ｗ安定给小鼠进行腹腔注射,连续 ３ｄ后,取相同质量的大脑进行线粒体蛋白的分离,进行有关ＭｎＳＯＤ和细胞色素氧化酶ＩＶ活性以及线粒体ＤＮＡ断裂 程度等指标的测定。结果（１）安定导致小鼠大脑的线粒体蛋白含量降低,线粒体蛋白含量从（３．３０７±０．２４０）mg／ml下降到 （２．７４６±０．４５１）mg/ml（ｔ=２．６９０,０．０１＜Ｐ＜０．０５）;（２）安定引起神经元线粒体的ＭｎＳＯＤ活性从（７５.４６±６．６３）Ｕ／ｍｇ下降到 （５５．３０±３．８３）Ｕ／ｍｇ（ｔ＝６．４４８, Ｐ＜０．０１）;（３）安定对细胞色素氧化酶具有显著的损伤作用,５５０nm处细胞色素吸收值从 （０．１１２±０．００８）下降到 ０．０６９±０．００８（t＝８．７８２, Ｐ＜０.０１）;（４）安定能导致小鼠大脑的线粒体ＤＮＡ大量断裂。在碱裂解过程 中,０°Ｃ条件下,ＤＮＡ双链的百分比从（９２．９５±２．８２）％下降到（７９．５３±２．３３）％（ｔ=８．４６６,Ｐ＜０.０１）;在 １５℃作用１ｈ,ＤＮＡ双 链的百分比从（７７．４５±３．４９）％下降到（４３．１５±６．１）％（ｔ＝１３．８１７     

急性心肌梗塞肌红蛋白检测的诊断价值

测定７８例血清肌蛋红蛋白（Ｍｂ）浓度，其中３３例急性心肌梗塞（ＡＭＩ）急性期入院，最早在起病后１．５小时升高，２１例在冠脉再通治疗后（４６．７±１７．３）分钟出现升高的峰值，平均为（８８９．９±４７．３）μｇ／Ｌ比再灌注前升高６５．５％，Ｍｂ异常升高持续（３７．３±６．８）小时，另观察２０例不稳定性心绞痛（ＵＡＰ）患者，疼痛发作期和间歇期Ｍｂ分别为（５６．３±２１．６）μｇ／Ｌ和（４１．６±２．３     

实验性糖尿病大鼠肝糖原合成酶活性的改变

目的：研究类ＮＩＤＤＭ大鼠模型肝糖原合成酶的活性。方法：雄性Ｗｉｓｔａｒ大鼠４０只，随机分为两组，每组２０只，一组用小剂量链脲佐菌素（ＳＴＺ，３０ｍｇ／ｋｇ）尾静脉注射，另一组不给ＳＴＺ，作为对照组，观察１８周，选择糖耐量异常、胰岛素水平高于或等于对照组者作为类ＮＩＤＤＭ大鼠模型，实验末期测定其肝糖原合成酶的活性。结果：Ⅰ型酶为（０．１８±０．０６）μｍｏｌ／（ｍｉｎ·ｇ）相对于（０．２４±０．０９）μｍｏｌ／（ｍｉｎ·ｇ）（Ｐ＜０．０５），而总酶Ｉ＋Ｄ为（１．５±０．４）μｍｏｌ／（ｍｉｎ·ｇ）相对于（１．８±０．４）μｍｏｌ／（ｍｉｎ·ｇ）（Ｐ＜０．０５）。结论：糖尿病鼠此酶活性明显低于对照组。     

不饱和脂肪酸对肺癌细胞的抑制作用

不饱和脂肪酸（ＬＡ）浓度为２５μｇ／ｍｌ，对人肺腺癌细胞系（ＳＰＣ－Ａ１）细胞和二倍体人胚肺细胞系（ＨＬＦ）细胞抑制率分别为：９８．４±２．２％，１８．０±２．１％（Ｐ＜０．００１）。表现为对恶性细胞的选择性抑制作用。ＳＰＣ－Ａ１对５μｇ／ｍｌ ＬＡ无反应，１μＭ丝裂霉素Ｃ（ＭＭＣ）对ＳＰＣ－Ａ１细胞抑制率为４３．４±２．９％而当用１μｍ ＭＭＣ处理这种对５μｇ／ｍｌ ＬＡ无反应的ＳＰＣ－Ａ１时，     

微血管病变患者血清学检测的临床意义

目的：了解微血管病变患血清洋地黄样物质（ＥＤＬＳ）与超氧化物歧化酶（ＳＯＤ）的关系及其意义。方法：应用放射免疫法检测微血管病变患血清ＥＤＬＳ、ＳＯＤ含量，酶法检测血清甘油三酯、胆固醇水平。结果：１５例正常对照血清ＥＤＬＳ、ＳＯＤ浓度为０．３９±０．０７μｇ／Ｌ、４２２±１２７μｇ／Ｌ，２８例糖尿病患、１８例脑出血患、２３例脑梗塞患血清ＥＤＬＳ浓度分别为０．５５±０．１４μｇ／Ｌ、０．６     

非胰岛素依赖型糖尿病患者血NO、IL-2和TNF-α的检测

目的：为探讨非胰岛素依赖型糖尿病（ＮＩＤＤＭ）免疫调节情况及ＮＯ、ＴＮＦ－α在其肾病发病机制的作用。方法：ＮＯ：比色法测定；ＴＮＦ－α：双抗体夹心酶联免疫吸附法（ＥＬＩＳＡ法）。结果：ＮＩＤＤＭ肾病组的ＩＬ－２水平（１．２６±０．２４）μｇ／Ｌ明显低于正常（Ｐ＜０．０１），而ＮＯ（ＮＯ－２／ＮＯ－３）（９１．２±２４．３）μｍｏｌ／Ｌ和ＴＮＦ－α（３．４０±１．２０）μｇ／Ｌ则显著高于正常对照组（Ｐ＜０．０１）；无并发症组有相同趋势，但无统计学意义。结论：提示ＮＩＤＤＭ患者ＮＯ、ＴＮＦ－α、ＩＬ－２调节紊乱，而且与ＮＩＤＤＭ肾病、感染等并发症有密切关系     

血清HA RIA在肝脏疾病的应用

本文测定正常人血清ＨＡ值为５１．１７±１７．１３μｇ／Ｌ（男５６．６±１９．８μｇ／Ｌ，女４５．５±１１·５μｇ／Ｌ）．肝癌ＨＡ均值高度升高，５２０．８２±１８３．５３μｇ／Ｌ，Ｐ＜０．００５；肝硬化中度升高４４６．２４±２２３．μｇ／Ｌ，Ｐ＜０．００５；急性黄疸型肝炎中度升高３０８．５７±２５８．１μｇ／Ｌ，Ｐ＜０．０１；急性肝炎轻度升高２０９．４８±１８６．１６μｇ／Ｌ，Ｐ＜０．０５，慢性肝炎轻度升高２２７．１２±１９７·９７μｇ／Ｌ，Ｐ＜０．００５．ＨＡ阳性率：肝硬化９７．２％，肝癌９０．９％，急性黄疸型肝炎５１．５％，在性肝炎４２．３％，急性肝炎３１．３％。ＨＡ，ＡＦＰ、ＣＥＡ、ＳＦ、ＣＧ联合ＲＩＡ有助于肝脏疾病鉴别诊断。     

血清β_2－MG测定对DN早期诊断的实验研究

用放射免疫法（ＲＩＡ）通过对６４例糖尿病患者和２４例经临床确诊的典型的ＤＮ患者进行血β２－ＭＧ、Ｃｒ、ＢＵＮ及尿蛋白定性测定。在糖尿病组中有２９例血β２－ＭＧ升高，３５例正常，ＤＮ组β２－ＭＧ全部升高。测定结果：糖尿病组β２－ＭＧ：３．０４±０．９５（μｇ／ｍｌ），ＤＮ组６．１１±３．３９（μｇ／ｍｌ），对照组１．９８±０．４６（μｇ／ｍｌ）。将β２－ＭＧ升高与正常的两组随访观察证实：血清β２－ＭＧ的升高早于ＢＵＮ、Ｃｒ及尿蛋白定性，四项检查的临床符合率分别为１００％、６２．５％、５０％、３３％。证明血β２－ＭＧ定量测定对ＤＮ的早期诊断具有较高的临床应用价值。     

高效液相色谱法同时测定生物体液中TMP、SMZ、Ac-SMZ的含量

建立了同时测定生物体液中磺胺甲基异恶唑、乙酰磺胺甲基异恶唑和甲氧苄啶的反相高效液相色谱分析方法。药物在ＯＤＳ柱上分离，流动相为甲醇－０．０６７ｍｏｌ／Ｌ磷酸缓冲溶液（３５：６５Ｖ／Ｖ），检测波长为２２５ｎｍ，ＴＭＰ，ＳＭＺ和Ａｃ－ＳＭＺ的检测限可分别达到０．４μｇ／ｍｌ，０．１μｇ／ｍｌ和０．３μｇ／ｍｌ。原型和代谢产物均可用有机酸经简单提取，该法精确、灵敏，并适用于药代动力学研究。     

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.     

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.     

Scientific principles and rigorous processes should be followed in developing clinical guidelines for therapeutic interventions of integrative medicine

A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care（~＇4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.