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。     

普罗布考对过氧化氢诱导平滑肌细胞增殖的影响

目的：探讨普罗布考（Ｐｒｏｂｕｃｏｌ）对Ｈ２Ｏ２诱导的平滑肌细胞（ＳＭＣＳ）增殖的抑制作用。方法：采用细胞计数法和＾３Ｈ－ＴｄＲ掺入法观察０．１～１００μｍｏｌ／Ｌ Ｐｒｏｂｕｃｏｌ对新生牛血清（ＮＣＳ）和过氧化氢（Ｈ２Ｏ２）促ＳＭＣＳ增殖的抑制作用。结果：１０μｍｏｌ／Ｌ及１００μｍｏｌ／Ｌ Ｐｒｏｂｕｃｏｌ作用９６ｈ,可抑制１０％ＮＣＳ刺激的ＳＭＣＳ增殖,而１,１０及１００μｍｏｏｌ／Ｌ Ｐｒ     

清醒大鼠下丘脑后部5—羟色胺和5—羟吲哚乙酰的释放及药物对其释放的影响

应用推－挽灌流法和高效液相电－化学检测技术，研究清醒大鼠下丘脑后部５－羟色胺（５－ＴＨ）和５－羟吲哚乙酰（５－ＨＬＡＡ）的释放及药物对其释放的影响。结果表明：５－ＨＴ的基础释放量为４～１５ｆｍｏｌ／ｍｉｎ，而５－ＨＩＡＡ为５０～１５０ｆｍｏｌ／ｍｉｎ高Ｋ＾＋（８０、１００ｍｍｏｌ／Ｌ）可依剂量性增加５－ＨＴ的释放，对５－ＨＩＡＡ无明显影响，藜芦定（Ｖｅｒａｔｒｉｄｉｎ，１μｍｏｌ／Ｌ）也有类似的作     

富硒枸杞对大鼠脂质过氧化作用的影响

通过测定喂养富硒枸杞和普通枸杞大鼠的血硒含量，ＧＳＨ－ＰＸ活性及血清ＭＤＡ一，对比观察了富硒枸杞对大鼠脂质过氧化作用的影响。结果表明，富硒枸幻组大鼠血硒含量为１．３３ｎｍｏｌ／Ｌ，ＧＳＨ－ＰＸ活性为２１．７Ｕ，均明显高于普通枸杞组的０．６０ｎｍｏｌ／Ｌ１０．３Ｕ；而前者血清ＭＤＡ含量５．０５μｍｏｌ／Ｌ却显著低于普通枸杞组的６．３９μｍｏｌ／Ｌ，提示富硒枸杞比普通枸杞具有较高的硒营养价值和较强的抗     

SpiramineN—6的抗血小板活性研究

采用Ｂｏｒｎ氏比浊法观察了ｓｐｉｒａｍｉｎｅＮ－６在体外和体内对兔血小板聚集功能的影响．应用荧光分光光度法测定其对血小板５－ＨＴ释放反应的作用．结果：ｓｐｉｒａｍｉｎｅＮ－６在体外选择性抑制血小板活化因子（ＰＡＦ）诱导的血小板聚集,并呈量效关系,其ＩＣ５０＝２６μｍｏｌ／Ｌ;２ｍｇ／ｋｇｓｐｉｒａｍｉｎｅＮ－６静注后明显抑制ＰＡＦ和花生四烯酸（ＡＡ）诱导的血小板聚集,最大抑制率于给药后６０,３０ｍｉｎ分别为（５０４±４４）％和（７７３±３３）％（与生理盐水组对照Ｐ＜００５）;ｓｐｉｒａｍｉｎｅＮ－６呈浓度依赖性减少ＰＡＦ和ＡＡ引起血小板５－ＨＴ的释放,其ＩＣ５０分别为３３５ｕｍｏｌ／Ｌ和６４７μｍｏｌ／Ｌ．结果表明ｓｐｉｒａｍｉｎｅＮ－６是一种较强的抗血小板聚集剂．     

乙酰水杨酸－聚－α，β－DL－（3－羟丙基）－天冬酰胺共价复合体中乙酰水杨酸含量测定

作者采用比色测定法，建立了一种测定乙酰水杨酸－聚－α，β－ＤＬ－（３－羟丙基）－天冬酰胺（ＡＳＡ－ＰＨＰＡ）共价复合体中的乙酰水杨酸（ＡＳＡ）含量的方法。该法先将ＡＳＡ－ＰＨＰＡ经０．１ｍｏｌ／ＬＮａＯＨ水解生成水杨酸（ＳＡ）后，在ｐＨ２．５～３．５的缓冲溶液中，用ＦｅＣｌ３与ＳＡ生成络合物，检测波长为５２５ｎｍ，并进行比色测定，其线性范围在２～８０μｇ／ｍｌ，加样回收率为１００．１０±０．４４％，方法简便可行。     

Fura－2荷载血小板胞内游离钙浓度的连续测定

以Ｃａ２＋荧光指示剂Ｆｕｒａ－２荷载血小板，连续测定血小板胞内游离Ｃａ２＋（［Ｃａ２＋］ｉ）浓度动态变化。在生理胞外Ｃａ２＋浓度时。正常成人血小板［Ｃａ２＋］ｉ静息水平为１０８．３±３．６ｎｍｏｌ／Ｌ（－ｘ±ｓ－ｘｎ＝１５，下同），以凝血酶０．２Ｕ／ｍｌ作诱导，［Ｃａ２＋］ｉ迅速升至峰值７７０．３±２７．３ｎｍｏｌ／Ｌ，其下降幅度在４ｍｉｎ时为４０．９％±１．８％；以ＴＭＢ８４００μｍｏｌ／Ｌ阻滞胞内Ｃａ２＋释放，［Ｃａ２＋］ｉ的峰值（４４３．７±２７．７ｎｍｏｌ／Ｌ）明显下降（Ｐ＜０．００１），而４ｍｉｎ的下降幅度（４７．７％±３．８％）则无明显差异（Ｐ＞０．０５）。在胞外Ｃａ２＋＜１０－８ｍｏｌ／Ｌ时，［Ｃａ２＋］ｉ静息水平７０．２±７．５ｎｍｏｌ／Ｌ，作同样的诱导，［Ｃａ２＋］ｉ的峰值（３２１．２±１７．８ｎｍｏｌ／Ｌ）及下降幅度（９９．２％±３．６％）均有显著变化（ｐ＜０．００１）。结果表明，本文所建立的方法能连续测定血小板［Ｃａ２＋］ｉ的动态变化。     

脱氧腺苷对大鼠胰岛细胞作用的研究

本研究探讨了２－脱氧核苷和３－脱氧核苷对大鼠离体的郎罕氏胰岛细胞分泌胰岛素的影响。２－脱氧核苷（１０ｍｍｏｌ／Ｌ）和３－脱氧核苷（０．１ｍｍｏｌ／Ｌ）均可抑制上糖诱导的胰岛素释放，并且降低特异性磷酸二酯酶抑制剂Ｏｒｇ９９３５或腺苷酸环化酶激活剂Ｆｏｒｓｋｏｌｉｎ促进胰岛素分泌的作用，而Ａ１腺苷受体拮抗剂ＤＰＣＰＸ（０．０５－１μｍｏｌ／Ｌ）阻滞脱氧腺苷对胰岛素分泌的抑制作用。结果提示，脱氧腺对胰岛     

血栓烷A_2拮抗剂对抗家兔血小板聚集反应的不同抑制方式

消炎痛（０．００３－１．０μｍｏｌ／Ｌ）抑制由花生四烯酸（ＡＡ，３μｍｏｌ／Ｌ）诱导的家兔洗脱血小板细胞内游离钙浓度增加及血小板聚集反应，呈剂量依赖性。血栓烷Ａ２拮抗剂ＯＮＯ－３７０８（０．３．０μｍｏｌ／Ｌ）使ＡＡ的上述两个反应的量效曲线平行右移。另一种血栓烷Ａ２拮抗剂Ｓ１４５也非竞争性的抑制ＡＡ的上述反应。延长Ｓ－１４５的温培时间可增加Ｓ－１４５的抑制作用，另外Ｓ－１４５的抑制作用不能被冲洗掉，而ＯＮＯ－３７０８冲洗后其抑制作用消失。平行线测定的结果表明，以Ｓ－１４５处理后的洗脱血小板其ＡＡ量效曲线的斜率与Ｓ－１４５加ＯＮＯ－３７０８处理组的量效曲线并不平行，这一结果提示至少Ｓ－１４５和ＯＮＯ－３７０８很可能与同一受体的不同位点相结合，但分别与Ｓ－１４５和ＯＮＯ－３７０８结合的两种不同ＴＸＡ２／ＰＧＨ２受体存在的可能性依然存在。     

海风藤酚、甲基海风藤酚、海风藤醇A和海风藤醇B对兔血小板聚集的影响

海风藤酚、甲基海风藤酚、海风藤醇Ａ和海风藤醇Ｂ均有抑制血小板激活因子（ＰＡＦ）诱导的兔血小板聚集作用，ＩＣ_（５０）分别为１７．９、９．２、１４２．０、１４．０μｍｏｌ·Ｌ~（－１）。经阿司匹林（ＡＳＡ）、磷酸肌酸／磷酸肌酸激酶（ＣＰ／ＣＰＫ）预处理的兔洗涤血小板，甲基海风藤酚和海风藤醇Ｂ仍能抑制ＰＡＦ诱导的兔血小板聚集，ＩＣ_（５０）为９．０、１６．５μｍｏｌ·Ｌ~（－１）。同时，４种成分对于二磷酸腺苷（ＡＤＰ），花生四烯酸（ＡＡ）诱导的血小板聚集抑制作用较弱，海风藤Ｂ能使ＰＡＦ诱导血小板聚集量－效曲线平行右移，ＥＣ_（５０）由１．５９ｎｍｏｌ·Ｌ~（－１）升为２０．６ｎｍｏｌ·Ｌ~（－１）。结果表明：４种成分能选择性拮抗ＰＡＦ对兔血小板的聚集作用。     

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.