红景天对大鼠脑缺血再灌注时自由基损伤保护作用的实验研究

探讨红景天对脑缺血再灌注时自由基损伤的保护作用，为脑缺血再灌注损伤的防治提供新的药物。方法：用４ＶＯ法复制大鼠实验模型，分为假手术组（ＳＡＭ）、单纯缺血组（ＩＳ）、缺血再灌注组（ＩＲ）、药物预防后缺血再灌注组（Ｒ＋ＩＲ）、缺血再灌注后药物治疗组（ＩＲ＋Ｒ），分别观察了大鼠脑组织中ＬＰＯ、ＳＯＤ，Ｎａ＾＋－Ｋ－ＡＴＰａｓｅ的变化。结果（１）ＩＳ组及ＩＲ组大鼠脑组织中ＬＰＯ含量均显著高于ＳＡＭ组（Ｐ．     

内源性一氧化氮与缺血/再灌性室性心律失常的关系

为探讨内源性一氧化氮（ＮＯ）在缺血／再灌性室性心律失常发生中的作用，观察缺血／再灌注损伤早期的室性心律失常（ＶＡ），血中ＮＯ及心肌一氧化氮合成酶（ＮＯＳ）活性。结果：①缺血／再灌组（Ｉ／Ｒ组）动物缺血及再灌注期各种心律失常均高于对照组（Ｐ＜０．０１），而血中ＮＯ含量皆低于对照组（Ｐ＜０．０５）。ＶＡ等级与ＮＯ含量呈负相关（ｒ＝０．７４５１４，Ｐ＜０．０５）。提示：血中ＮＯ量的减少与缺血／再灌注性ＶＡ增加有密切关系。②Ｉ／Ｒ组与对照组心肌中ＮＯＳ活性无显著差异。提示血中ＮＯ减少，可能不是生成减少而是消耗增多所致。     

血小板激活因子和维甲酸对中性粒细胞功能和ICAM－1，ELAM－1表达的影响

目的：探讨血小板激活因子（ＰＡＦ）和维甲酸（ＲＡ）对多形核中性粒细胞（ＰＭＮ）功能和肺微血管内皮细胞（ＰＭＶＥＣ）ＩＣＡＭ－１和Ｅ－选择素（ＥＬＡＭ－１）表达的影响。方法：采用作者创建的无创性分离法分离培养ＰＭＶＥＣ；将ＰＡＦ和ＲＡ分别加入培养有ＰＭＶＥＣ的９６孔板中，观察二者对ＰＭＮ－ＰＭＶＥＣ粘附的影响；ＥＬＩＳＡ法测定ＰＭＶＥＣ上ＥＬＡＭ－１和ＩＣＡＭ－１的表达；测定ＰＡＦ和ＲＡ对ＰＭＮ的趋化性、聚集和酸性磷酸酶的释放的影响。结果：（ｌ）ＰＭＶＥＣ用ＰＡＦ处理３．５ｈ后，它与ＰＭＮ的粘附率从５７．３％增加到７２．８％（Ｐ＜０．０１）。而用ＰＡＦ处理ＰＭＮ同样可增加ＰＭＮ－ＰＭＶＥＣ的粘附率。（２）ＲＡ可阻断未刺激ＰＭＮ与ＰＡＦ刺激的ＰＭＶＥＣ之间的粘附，但对ＰＡＦ刺激的ＰＭＮ与未刺激的ＰＭＶＥＣ之间的粘附却无作用。（３）ＰＡＦ可增加ＰＭＶＥＣ上ＩＣＡＭ－ｌ和ＥＬＡＭ－ｌ的表达、增加酵母多糖激活血清和组胺对ＰＭＮ的趋化性、增加ＰＭＮ的聚集和ＰＭＮ酸性磷酸酶的释放。（４）ＲＡ则可抑制ＰＡＦ诱导的ＰＭＮ聚集、酸性磷酸酶的释放及ＰＭＮ对酵母多糖刺激血清和组胺的趋化性，而ＩＣＡＭ－１和ＥＬＡＭ－１的表达却未改变     

THE ROLE OF RECOMBINANT HUMAN FUSION PROTEIN IL－6／IL－2（CH925） IN HEPADNA VIRUS INFECTION TREATMENT

ＴＨＥＲＯＬＥＯＦＲＥＣＯＭＢＩＮＡＮＴＨＵＭＡＮＦＵＳＩＯＮＰＲＯＴＥＩＮＩＬ－６／ＩＬ－２（ＣＨ９２５）ＩＮＨＥＰＡＤＮＡＶＩＲＵＳＩＮＦＥＣＴＩＯＮＴＲＥＡＴＭＥＮＴＭｉＺｈｉｂａｏ（米志宝），ＺｈａｏＣｈｕｎｈｕａ（赵春华），ＺｈａｎｇＸｉｔ...     

IL—1预刺激对反义IRAK—2寡核苷酸抑制NF—κB活化的影响

目的 研究白介素－１（ＩＬ－１）预刺激对反义受体相关激酶－２寡核苷酸（ＩＲＡＫ－２ＯＤＮ）抑制ＩＬ－１激活核因子－ｋａｐｐａ Ｂ（ＮＦ－κＢ）的影响。方法 实验分ＩＬ－１预处理组和非预处理组。以脂质体介导反义ＩＲＫＡ－２ＯＤＮ转染２９３细胞,以夹心酶联免疫吸附测定法（ＥＬＩＳＡ）检测ＮＦ－κＢ的含量。结果 ＩＬ－１非预处理组反义ＩＲＡＫ－２ＯＤＮ不能抑制ＮＦ－κＢ活性,而预处理组ＮＦ－κＢ活化受到     

缺血与再注进电刺激引起大鼠心去甲肾上腺素释放的变化

运用电场刺激（频率６Ｈｚ，电压５Ｖ，脉宽２ｍｓ）研究了离体灌注的鼠心，在缺血早期和再灌注时去甲肾上腺素（ＮＡ）释放的变化。经自身前后两次刺激对比（Ｓ２／Ｓ１），证实电刺激通过兴奋心脏的交感神经，引起ＮＡ钙依赖性的出胞释放，并具良好的重复性（Ｓ２／Ｓ１＝０．３４，Ｐ＜０．０１），恢复再灌注后，抑制作用逐渐消失。再灌注达５分钟时，电刺激引起的ＮＡ释放已达５分钟时，电刺激引起的ＮＡ释放已达缺血前水平（Ｓ     

血小板激活因子和维甲酸对中性粒细胞功能和ICAM—1,ELAM…

目的；探讨血小板激活因子（ＰＡＦ）和维甲酸（ＲＡ）对多表核中性粒细胞（ＰＭＮ）功能和肺微血管内皮细胞（ＭＶＥＣ）ＩＣＡＭ－１和Ｅ－选择素（ＥＬＡＭ－１）表达的影响。方法；采用作者创建的无创性分离法分离培养ＰＭＶＥＣ：将ＰＡＦ和ＲＡ分别加入培养有ＰＭＶＥＣ的９０孔板中，观察二者对ＰＭＮ－ＰＭＶＥＣ粘附的影响，ＥＬＩＳＡ法测定ＰＭＶＥＣ上ＥＬＡＭ－１和ＩＣＡＭ－１的表达，测定ＰＡＦ和ＲＡ对ＰＭＮ的趋化     

慢性丙型肝炎患者（2＇，5＇）寡腺苷酸合成酶的活性测定

目的：了解慢性丙型肝炎患者（２＇，５＇）寡腺苷酸合成酶（２－５ＡＳ）活性在干扰素治疗过程中的动态变化及意义。方法：ＰＥＩ－ＣＥＬＬＵＬＯＳＥ薄板层析法。结果：（１）慢性丙型肝炎患者２－５ＡＳ基础水平比正常人显著升高（Ｐ＜０．０１）；（２）ＩＦＮα治疗结束后ＨＣＶＲＮＡ持续阳性的病人２－５ＡＳ基础水平比ＨＣＶＲＮＡ转阴的病人要高（Ｐ＜０．０５）；（３）ＩＦＮα治疗效果较好，ＨＣＶＲＮＡ转阴的病人２－５ＡＳ水平在用药后２４ｈ比ＨＣＶＲＮＡ未转阴的病人上升得更高（Ｐ＜０．０１）；（４）用药后１个月２～５ＡＳ水平与ＩＦＮα治疗效果无显著相关性（Ｐ＞０．０５）。结论：２－５ＡＳ可以作为评价干扰素治疗效果的１个机体反应指标。     

己酮可可碱对呼吸道合胞病毒所致的TNF—α基因表达水平的影响

观察己酮可可碱（ＰＴＸ）对呼吸道合胞病毒（ＲＳＶ）所诱导的巨噬细胞肿瘤坏死因子（ＴＮＦ－α）含量及ＴＮＦ－αｍＲＮＡ表达水平的影响。收集Ｂａｌｂ／ｃ小鼠腹腔巨噬细胞，随机分成三组①对照组（ＮＯＲ组）；②感染组（ＲＳＶ组）；培养基中含有１０＾６ｐｆｕ的ＲＳＶ；③己酮可可碱组（ＰＴＸ组）：用ＲＳＶ（１０＾６ｐｆｕ）感染后，培养基中加入ＰＴＸ（１ｍｇ／ｍｌ）；每组于ＲＳＶ感染巨噬细胞ＦＮＦ－αｍＲＮＡ表     

THE MEASUREMENT AND APPLICATION OF TSH-IRMA LEVELS AMONG DIFFERENT AGE GROUPS IN AREAS WITH IODINE DEFICIENCY DISORDERS

ＴＨＥＭＥＡＳＵＲＥＭＥＮＴＡＮＤＡＰＰＬＩＣＡＴＩＯＮＯＦＴＳＨ－ＩＲＭＡＬＥＶＥＬＳＡＭＯＮＧＤＩＦＦＥＲＥＮＴＡＧＥＧＲＯＵＰＳＩＮＡＲＥＡＳＷＩＴＨＩＯＤＩＮＥ　ＤＥＦＩＣＩＥＮＣＹ　ＤＩＳＯＲＤＥＲＳＳｈｉＬｉｘｉｎ（时立新）；ＳｈｉＺｈｏ...     

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.