卡托普利对动脉粥样硬化患者肱动脉内皮依赖性舒张功能的改善作用

目的 :观察卡托普利对动脉粥样硬化(AS)患者血浆一氧化氮 (NO)、内皮素 (ET-1 )水平及内皮依赖性血管舒张功能的影响。方法 :应用高分辨率超声技术检测 5 2例服用和 48例未服用卡托普利的AS患者的肱动脉内皮依赖性舒张功能 ,并测定其血浆NO、ET -1水平。结果 :经卡托普利治疗后AS患者肱动脉内皮依赖性舒张功能得到改善 ,同时血浆ET -1水平降低 ,NO水平升高 ,与对照组比较有统计学差异。结论 :卡托普利能有效改善AS患者的血管内皮依赖性舒张功能 ,并能降低血浆ET -1水平 ,升高NO水平。     

老年全身炎症反应综合征患者肱动脉血管舒张功能的变化

目的 探讨血管内皮舒张功能在全身炎症反应综合征(SIRS) 老年患者中的变化.方法 选择82 例SIRS 老年患者,分为生存组(n=58) 和死亡组(n=24),同时选择22 例非SIRS 老年患者作为对照,分别检测肿瘤坏死因子(TNF-α)、白细胞介素-1(IL-1)、血浆内皮素-1(ET-1) 和C 反应蛋白(CRP),并采用高分辨血管外超声法检测肱动脉介导的内皮依赖性血管舒张功能(FMD) 和硝酸甘油介导的内皮非依赖性血管舒张功能(NMD).结果 SIRS 组中TNF-α、IL-1、ET-1、CRP 明显升高,差异有统计学意义,在死亡组中,上述指标较生存组高(P<0.01),差异有统计学意义(P<0.05).SIRS 组FMD 较对照组显著降低(2.21±0.18 vs 2.80±0.21,P<0.01),且死亡组中FMD 较生存组降低.SIRS 组NMD 较对照组明显增加(P<0.01),但死亡组中NMD 较生存组下降(P<0.01).TNF-α、IL-1、ET-1、CRP 与内皮依赖性血管舒张功能呈负相关(P<0.01).结论 SIRS 患者血管内皮依赖性舒张功能(FMD) 明显受损,受损程度与病情严重程度相关.     

沙眼衣原体相关抗体在筛查输卵管性不孕中的应用探讨

目的通过研究沙眼衣原体抗体IgG(CT-IgG)与衣原体热休克蛋白60-IgG抗体(chsp60-IgG)两种沙眼衣原体相关抗体与输卵管病变的关系,探讨更准确的输卵管性不孕不育的初筛指标。方法收集经腹腔镜确诊的输卵管性不孕不育症患者空腹血清标本55例,健康人空腹血清标本116例,采用酶联免疫吸附法和免疫比浊法分别对两组衣原体相关抗体CT-IgG与chsp60-IgG进行检测。计算CT-IgG和chsp60-IgG单个指标,两者联合共3种筛查方法的阳性预测价值、阴性预测价值、灵敏度、特异度,阳性似然比、阴性似然比和约登指数(Youden)等。结果两组沙眼衣原体抗体IgG检测阳性率分别为54.55%和7.76%,两组chsp60-IgG检测阳性率分别为40.00%和22.41%。两种衣原体抗体联合检测在两组人群中的阳性率分别为87.27%和24.1%。CT-IgG在两组中的OR值为14.3,CT-IgG和chsp60-IgG两者联合检测在两组中的OR值为21.6,差异有统计学意义(P0.05)。结论 CT-IgG和chsp60-IgG联合检测在预测输卵管性不孕中具有较高的筛查价值。     

原发性高血压患者血管内皮功能失调与活性氧的关系及阿托伐他汀治疗的影响

目的观察高血压病患者血管内皮依赖性舒张功能与活性氧的关系及阿托伐他汀治疗的影响.方法将58例高血压病患者随机分为对照组(服用双氢克尿噻和倍他乐克)和实验组(另加用阿托伐他汀),检测两组治疗前后及28例正常人的血清超氧化物歧化酶(superoxidc dismutase,SOD)水平、血管内皮依赖性舒张功能.结果高血压患者血清SOD水平降低,血管内皮依赖性舒张功能受损,两者显著正相关.治疗2个月后,两组血清SOD水平均升高,而实验组SOD升高更显著,且血管内皮依赖性舒张功能改善.结论活性氧是高血压血管内皮功能的主要影响因素,他汀类可通过减少活性氧保护血管内皮功能.     

冠心病患者有关感染性指标的检测及相关性研究

目的　探讨感染与冠心病的关系。方法　选择冠心病 (CHD)组、对照组各 40例。应用放射免疫法检测血清白细胞介素 6(IL - 6) ,散射免疫浊度法检测血清C -反应蛋白 (CRP)水平 ,酶联免疫法检测血清肺炎衣原体 (Cpn)特异性抗体 (CpnIgG)。结果　CHD组血清IL - 6、CRP水平显著高于对照组 ,差异有非常显著性 (P <0 .0 1 )。CpnIgG阳性者IL - 6、CRP水平显著高于阴性者。CpnIgG与血中IL- 6、CRP水平均显著相关。结论　炎性细胞因子及C -反应蛋白与冠心病发生、发展密切相关。肺炎衣原体感染与冠心病相关。     

广州地区成年女性EB病毒抗体水平相关性及其年龄分布

目的调查广州地区成年女性血清免疫球蛋白水平和抗EB病毒VCA/EBNA1 IgA和IgG抗体的年龄分布及其相互关系。方法收集广州市309例常规体检的健康女性血清样本,分别采用比浊法和ELISA检测血清免疫球蛋白水平、抗EB病毒VCA/EBNA1 IgA和IgG抗体水平。结果广州地区成年女性抗EB病毒VCA-IgA、抗VCA-IgG及抗EBNA1-IgA、抗EBNA1-IgG的阳性率分别为14.6%、92.2%、3.2%、99.7%。抗VCA-IgA阳性率与年龄呈正相关(r=0.163,P=0.004);抗EBNA1-IgG OD值与年龄呈负相关(r=-0.178,P=0.020)。各抗体水平间的相关性分析显示,抗EBNA1-IgA与血清总IgG水平之间呈负相关(r=-0.154,P=0.008);抗VCA-IgA与抗EBNA1-IgA、抗EBNA1-IgA与抗EBNA1-IgG、血清总IgA与抗VCA-IgA、总IgG与抗VCA-IgG、总IgA与总IgG、总IgM与总IgG水平之间均存在正相关(r分别为0.113、0.241、0.228、0.228、0.433和0.362,P0.05)。结论广州地区成年女性99.7%存在EB病毒既往感染。随着年龄增长,抗VCA-IgA阳性率逐渐增高,而抗EBNA1-IgG OD值则逐渐下降。抗EB病毒抗体水平间存在一定的相关性,有助于鼻咽癌等疾病筛检时联合指标的选择。     

氟伐他汀对老年高血压病患者内皮依赖性血管舒张功能影响的研究

目的　研究氟伐他汀对老年高血压病患者内皮依赖性血管舒张功能的影响。方法　用高分辨超声技术 ,对老年高血压病患者 1、 2、 3级各 17例 (分 3组 )氟伐他汀治疗前后和 15例正常血压老年患者 (对照组 )肱动脉的内皮依赖性及内皮非依赖性血管舒张功能进行检测。结果　高血压各组内皮依赖性血管舒张功能与对照组间差异有显著性意义 (P<0 0 0 1) ;但高血压组间无显著性差异 ;高血压各组内皮非依赖性血管舒张功能与对照组比较无显著性差异 ;5 1例高血压病患者服用氟伐他汀 2 0～ 4 0mg d ,5个月后内皮依赖性血管舒张功能与治疗前相比差异有显著性意义。多元逐步回归分析显示 ,内皮依赖性血管舒张功能与收缩压 (SBP)明显相关 (R2 =0 35 9,df=6 5 ,P <0 0 0 1)。结论　高血压本身是内皮功能受损的独立危险因素 ,经氟伐他汀干预后受损的内皮依赖性血管舒张功能明显改善     

RA患者血清中T-AOC、NO、vWF的水平检测及临床意义

目的通过观察类风湿性关节炎患者血清中总抗氧化能力、一氧化氮、血管性血友病因子的水平变化,了解类风湿性关节炎患者体内氧化应激状态与血管内皮损伤状况。方法以55例RA患者和30例健康志愿者为研究对象,用化学比色法检测血清T-AOC,用生物素双抗体夹心酶联免疫吸附法(ELISA)检测血清中v WF,用硝酸还原酶法检测血清中NO,同时结合血清类风湿因子,(RF)和抗环胍氨酸肽,(CCP)抗体检测结果进行分析。结果 (1)与正常对照组相比,RA患者血清T-AOC显著降低(P0.05),NO、v WF水平均显著升高(P0.05);(2)RF阳性与RF阴性的RA患者之间血清氧化应激指标和血管内皮相关指标均无明显差异(P0.05);(3)RA病人中抗CCP抗体阳性与抗CCP抗体阴性者相比,NO水平显著升高(P0.05),其余指标水平无明显差异(P0.05)。结论 (1)类风湿性关节炎(RA)患者体内氧化水平显著升高,抗氧化能力明显降低,提示RA患者体内存在氧化应激反应;(2)RA患者体内存在血管内皮损伤或功能障碍。     

辛伐他汀对冠心病患者血管内皮功能的影响

目的探讨冠心病患者血管内皮依赖性舒张功能及血清NO浓度的变化及辛伐他汀干预对其的影响。方法用高分辩超声技术检测各组对象的肱动脉内皮依赖性舒张功能,并测定血清NO浓度,药物干预8周后复测上述指标。结果与正常对照组比较,冠心病患者肱动脉内皮依赖性舒张功能明显减退(P<0.01),血清NO浓度降低(P<0.01)。辛伐他汀可改善血管内皮依赖性舒张功能([8.12±4.26)%vs(2.64±1.35)%,P<0.01],升高血清NO浓度([68.35±18.34)μmol/Lvs(48.64±15.97)μmol/L,P<0.01],并且血管内皮依赖性舒张功能的改善与血清NO浓度的增加正相关(r=0.827,P<0.01)。结论冠心病患者肱动脉内皮依赖性血管舒张功能明显减退,血清NO浓度降低。辛伐他汀通过增加血清NO浓度改善冠心病患者的血管内皮功能,该作用可能是他汀类调脂药防治冠心病的机制之一。     

动脉粥样硬化患者血浆内皮素和一氧化氮水平的观察

目的研究血浆内皮素(ET)和一氧化氮(NO)在颈动脉粥样硬化(AS)中的作用.方法用颈动脉超声检测患者顼AS情况,同时测定血浆ET和NO水平.结果颈AS阳性患者血浆ET水平明显升高,NO水平较阴性患者明显降低.结论AS病变可引起血管内皮依赖性舒张功能障碍,NO降低,ET增高是导致或加重AS的重要因素之一.     

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.