血红素氧合酶-1的诱导对肺缺血再灌注损伤的保护作用

目的探讨血红素氧合酶-1的诱导对肺缺血再灌注损伤的保护作用。方法将40只健康Sprague-Dawley大鼠随机分为4组：假手术对照（sham）组、肺缺血再灌注（I／R）组（阻断左肺门30min再灌注2h）、氯化血红素（Hemin）组（给予血红素氧合酶-1的诱导剂）与锌原卟啉（ZnPP）组（给予血红素氧合酶-1的抑制剂）。检测各组肺组织超氧化物歧化酶（SOD）活性,血浆肿瘤坏死因子（TNF-α）含量,观察肺组织湿干重比（W／D）以及电镜下肺组织超微结构变化。结果Hemin组肺湿／干重比（5．92±0．66）低于I／R组（7．55±0．66）（P〈0．01）,SOD活性（9．2±0．5）高于I／R组（2．8±0．4）（P〈0．01）,TNF-α含量（60．37±8．25）低于I／R组（452．26±22．59）（P〈0．01）,电镜下肺组织超微结构损伤改变明显减轻;而给予ZnPP（ZnPP组）后使上述改变发生逆转。结论血红素氧合酶-1的诱导可有效保护肺缺血再灌注损伤。     

感染HPV的宫颈组织微量元素硒检测及其相关研究

目的研究宫颈人乳头瘤病毒（HPV）感染与宫颈组织硒含量的关系。方法用第2代捕获杂交（HC2）法栓则宫颈的HPV感染情况；以荧光光度技术检测宫颈组织硒的含量。结果HPV感染组宫颈组织硒含量：133例慢性宫颈炎组为（5．48±2．37）mmol／g，宫颈上皮内瘤变CINI级组（113例）为（5．39±2．26）mmol／g，CINⅡ级组（52例）为（3．17±1．74）mmol／g，CINIII级组（19例）为（2．63±1．46）mmol／g。组间比较差异有显著性（P〈0．05）；148例HPV阴性对照宫颈组织硒的平均含量为（6．14±3．33）mmol／g，与HPV感染组比较差异有显著性（P〈0．01）。结论硒含量与宫颈组织的HPV感染有关，其下降程度与病变程度相一致，补充适量的微量元素硒可能有利于CIN恢复。     

经胸电击对起搏器功能的影响及甲基强的松龙的作用

12只埋藏起搏器的麻醉犬随机分为两组（各6只），A组接受20J／kg经胸电击；B组先予甲基强的松龙10mg／kg静注，然后给予20J／kg电击。观察对起搏阈值（PT）和心内膜R波振幅（IDA）的影响。结果：A组电击后即刻PT升高（0．42±0．03VS0．71±0．06mA，P＜0．01），IDA降低（13．33±0．65VS8．71±1．16mV，P＜0．01）。B组电击后即刻PT升高（0．45±0．03VS0．63±0．04mA，P＜0．01），IDA降低（11．85±1．34VS10．08±1．22mV，P＜0．05）。A组电击后PT、IDA改变的幅度较B组为大（P＜0．05）。提示：经胸电击可升高PT，降低IDA；甲基强的松龙可减轻这种作用。     

间断给氧对兔体外循环中肺损伤的保护

目的　研究间断给氧对兔体外循环 ( CPB)中肺的保护作用 ,并探讨其机制 .方法　采用兔 CPB模型 ,CPB中间断给氧 ,测定肺组织的丙二醛 ( MDA ) ,髓过氧化物酶( MPO) ,肺组织血管通透性 ( EB值 )及湿干质量比 ( W/ D) ,并观察肺组织超微结构的变化 .结果　间断给氧组肺组织MDA含量 ( 81± 5 ) mol.kg- 1 明显低于 CPB组 ( 139± 17) mol.kg- 1 ,P<0 .0 1.MPO含量 ( 6 .3± 1.9)× 10 3U.kg- 1 明显低于 CPB组 ( 9.4± 0 .6 )× 10 3U.kg- 1 ,P<0 .0 1.血管通透性( EB值 ) ( 1.9± 0 .2 )明显低于 CPB组 ( 3.2± 0 .0 7) ,P<0 .0 5 .W/ D值 ( 8.7± 0 .8)明显低于 CPB组 ( 11.3± 2 .3) ,P<0 .0 5 .结论　 CPB期间存在肺缺血再灌注损伤 ;间断给氧可减轻肺损伤 ,具有肺保护作用     

肾病综合征鼠骨代谢变化特点及芪归合剂对其的作用

 【目的】 探讨肾病综合征（NS）鼠骨代谢的变化特点及芪归合剂对其的作用。【方法】 制备大鼠阿霉素NS模型，设模型组、激素治疗组、芪归治疗组、激素芪归治疗组及正常对照组，每组8只，用药时间为3周。测量各组尿蛋白、血生化指标和右股骨长度；用HologicQDR-2000＋DEXA行股骨全段骨密度（BMD）测定；以放射免疫法测定血清骨钙素（OC）、Ⅰ型前胶原氨基端伸展肽（PINP）、Ⅰ型胶原羧基端关联肽原（ICTP）水平。【结果】 模型组股骨长度（3．35±0．09）cm，低于正常组（3．53±0．11）cm（P〈0．05）；芪归治疗组（3．46±0．09）cm，高于模型组（P〈0．05）；激素芪归组（3．28±0．07）cm，高于激素治疗组（3．16±0．11）cm（P〈0．01）；激素治疗组低于模型组（P〈0．05）。模型组股骨全段BMD（0．1357±0．0137）g/cm^2，低于正常组（0．1599±0．0101）g／cm^2（P〈0．01）；激素治疗组（0．1208±0．0123）g／cm^2，低于模型组（P〈0．05）。模型组血OC（16．31±3．87）μg，L和PINP（2．02±0．51）μg/L水平，低于正常组，分别（31．49±4．16）μg/L、（3．58±0．46）μg/L（P〈0．01）；芪归治疗组血OC（25．90±8．26）μg/L和PINP（3．42±1．07）μg/L水平，高于模型组（分别P〈0．05和P〈0．01）；激素芪归组血OC（12．01±1．97）μg/L和PINP（2．47±0．88）μg/L水平，高于激素治疗组，分别（6．12±3．26）μg/L、（1．63±0．74）μg/L（P〈0．05）；激素治疗组低于模型组（P〈0．05）。激素治疗组的ICTP（10．15±3．77）μg/L高于模型组（8．71±3．29）μg/L（P〈0．05）。【结论】NS鼠存在骨代谢的异常，激素治疗使骨代谢异常进一步加剧，而芪归合剂治疗对其有改善作用。     

运动疗法联用二甲双胍对135例肥胖糖耐量减低及代谢干预作用

目的：评价运动疗法联用二甲双胍对肥胖糖耐量减低干预作用。方法：将肥胖糖耐量减低人群随机分成治疗组135人，给予有氧代谢运动——步行；每天快步走3000m，30min以上，每周运动5次，口服二甲双胍（745±26）mg／d。对照组125人，口服月见革油胶丸（2800±120）mg／d，po。随访1～1．5年，观察2组治疗前后空腹血糖、口服葡萄糖耐量试验（OGTT）、糖脂代谢和胰岛素敏感性差异。结果：治疗组糖耐量减低明显提高，2组间明显差异[空腹血糖（5．4±0．8）mmol／Lvs5（6．2±0．5）mmol／L，P〈0．05；OGTT（6．3±1．6）mmol／L v（9．2±-1．3）mmol／L，P〈0．05，治疗组体重指数、腰围、游离脂肪酸低于对照组[（26．2±1．8）kg／m^2 vs（28．3±1．5）kg／m^2,P〈0．05；（92±7）cm vs（95±6）cm，P〈0．05；（547±183）μmol／L vs（619±197）μmol／L，P〈0．05]，胰岛素敏感性明显改善（51±12 vs 46±3,P〈0．05）。结论：运动疗法减轻肥胖，使血中游离脂肪酸减少，增加胰岛素敏感性，提高糖耐量；二甲基双胍改善胰岛索敏感性通过降低甘油酯、游离脂肪酸发挥作用。二者均减重效应，增加胰岛素敏感性，达到协同作用。建议扩大在社区中预防肥胖糖耐量异常的人群．以防发展成2型糖尿病。     

生长抑素对急性胃粘膜损伤保护作用的实验研究

为建立癌胚抗原（CEA）尼龙微球固相免疫放射分析法并应用于临床．采用Lodogen法125Ⅰ标记CEA单克隆抗体C－17，用单克隆抗体C－50、C－6化学包被尼龙微球制成固相抗体（N－SP）．建立一步法的CEAN－SPIRMA，灵敏度2μg／L，工作范围为5－80μg／L，批内和批间CV分别为4．63％和8．34％，回收率93．86－104．73％．结果：65例正常人CEA值为5．2±3．8μg／L，78例良性病人为12．3±5．4μg／L，87例恶性肿瘤病人为69．3±51．4μg／L．正常组与良性疾病组比较差异无显著意义（P＞0．05）；正常组与恶性肿瘤组比较差异有显著意义（P＜0．01），以上测定值与CEA放射免疫法结果比较相关系数r＝0.9328，P＜0．01，且提高了恶性肿瘤诊断率．结论：该方法操作简便、快速、准确，是一种新型有效而实用的分析技术，可推广使用．     

雷公藤抑制免疫排斥反应的实验研究

采用15％雷公藤煎剂和40μg／ml、100μg／ml、500μg／ml雷公藤总甙对供鼠皮片浸泡孵化，在昆明种小鼠和DBA褐色小鼠间进行皮片移植，观察雷公藤对同种皮片移植免疫排斥的抑制作用．结果，雷公藤煎剂孵化皮片能显著延长移植物的存活时间，两种小鼠皮片移植后存活时间分别为22．31±3．60天、21．50±3．40天，与对照组（13．20±2．25天、11．81±27．5天）相比有显著意义（P＜0．01）；40μg／ml雷公藤总甙孵化后皮片存活时间为17.54±1．44天，100μg／ml为19．84±2.63天，500μg／ml为20．91±3．80天；雷公藤总甙孵化加腹腔注射，每天40μg／20g，小鼠为21．35±2.08天，100μg为22.34±2.75天，500μg为19.82±1．14天，与对照组（12.83±0.80天、11．96±1．75天）相比均有显著差异（P＜0．01）；雷公藤总甙单纯孵化各组与孵化加腹腔注射相比，除40μg／ml组（P＜0．05）外，存活时间无明显差别（P＞0.05）。表明雷公藤可明显延长皮片存活时间，且单纯孵育即可获得良好效果。     

BCG法与BCP法测定孕妇血清白蛋白的比较

目的选择测定孕妇血清白蛋白（ALB）的最佳方法。方法用血清型标准作溴甲酚绿法（BCG）和溴甲酚紫法（BCP）测定孕妇组与对照组血清中的ALB，并用免疫散射比浊法作相关处理及与醋纤膜电泳进行白球蛋白比例（AfG）比较。结果孕妇组：BCG法35．1±3．4g／L，BCP法31．8±4.0g／L，两法有显著性差异（P＜0．01）；而对照组两法无显著性差异（P＞0．05）；免疫散射比浊法与SCP法呈高度正相关（r＝0．991），与BCG法相关较差（r＝0.639）。醋纤膜电泳A／G1．08±0．17，BCG法1．29±0．16，两者有显著性差异（P＜0．01）；BCP法1．04±0．18，与醋纤膜电泳相比无统计学差异（P＞0．05）。结论BCP法测定孕妇血清ALB优于BCG法。     

美喘清、地塞米松对小儿支气管哮喘β受体和cAMP的影响

目的　研究美喘清、地塞米松对支气管哮喘小儿β受体和cAMP水平的影响。方法　采用放射配基受体结合分析方法，对支气管哮喘急性发作期患儿应用单一口服美喘清以及美瑞清和静注地塞米松联合治疗前后外周血淋巴细胞β－AR和血浆cAMP水平及临床治疗效果进行了观察。结果美喘清组：β－AR治疗前为3911．9±306．9site／cell，治疗后为2672．8±343．7site／cell（P＜0．01）；cAMP治疗前为18．9±1．gpm／mL，治疗后为19.6±1．5pm／mL（P＞0．05）；美喘清＋地塞米松组：β－AR治疗前为4018．8±344．5site／cell，治疗后为2227．9±208．2site／cell（P＜0．01）；cAMP治疗前为17．4±1．5pm／mL，治疗后为21．3±2．1pm／mL（P＞0．05）。结论美喘清在体内激活了β-AR，对哮喘急性发作期治疗有效，而联合用药时，静注地塞米松未见明显加强美喘清激活β-AR的作用。     

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.