藻黄胶囊Ⅱ号延缓慢性肾功能衰竭进展的实验研究

目的 囊Ⅱ号液对人肾小球系膜细胞(GMC)、增殖及分泌纤维连接蛋白(FN)、转化生长因子β1(TGF-β1)的影响.方法 体外人GMC培养,细胞成熟后进行药物孵育,观察细胞增殖情况,检测藻黄胶囊Ⅱ号液对人GMC分泌的FN、TGF-β1的影响.结果 实验研究显示藻黄胶囊Ⅱ号液可明显抑制人GMC的增殖,明显抑制人GMC分泌FN、TGF-β1.结论 藻黄胶囊Ⅱ号液可抑制人GMC的增殖及FN、TGF-β1分泌,提示其可减少肾小球和肾间质细胞外基质的堆积.     

Radionuclide angiographic evaluation of ventricular function in isolated congenitally corrected transposition of the great arteries

Eight asymptomatic patients (mean age 19 years, range 7 to 32) with congenitally corrected transposition of the great arteries (CCTGA) underwent equilibrium gated radionuclide angiocardiography at rest and during supine bicycle exercise to assess systemic (morphologic right) and pulmonary (morphologic left) ventricular function. Five patients had normal intracardiac hemodynamic values, 2 had trivial atrioventricular valve regurgitation and 1 patient had trivial pulmonary ventricular outflow tract obstruction. Average exercise duration was 11 +/- 1 minute, with limitation due only to fatigue. At peak exercise, heart rate increased 225% and systolic blood pressure 152% over the rest value. Pulmonary ventricular ejection fraction at rest was 51 +/- 3% (mean +/- standard error of the mean); it did not change significantly at peak stress, 53 +/- 2%. Systemic ventricular ejection fraction was 48 +/- 4% at rest and increased to 64 +/- 4% at peak exercise (p less than 0.01). Count-based volume changes for the pulmonary chamber showed no significant change in end-diastolic or systolic counts at peak exercise (109 +/- 8% and 106 +/- 9% of rest value, respectively). However, end-diastolic counts decreased 13% (87 +/- 3% of rest value) and end-systolic counts 34% (62 +/- 7% of rest value) at peak exercise in the systemic ventricle. These data suggest normal systemic and impaired pulmonary ventricular function in patients with congenitally corrected transposition of the great arteries unaccompanied by significant associated lesions. These findings have important clinical implications in the setting of complex congenital heart disease in patients in whom a morphologic right ventricle functions as the systemic pumping chamber. Despite the pulmonary ventricular dysfunction, symptoms were not apparent at rest or during exercise.     

白头翁加味汤治疗溃疡性结肠炎的作用研究

目的：观察白头翁加味汤治疗溃疡性结肠炎（UC）的临床有效性、安全性及评估4种炎症因子的临床监测意义。方法：将入选的78例UC患者随机分为两组：对照组和试验组,各39例。对照组采用柳氮磺胺吡啶片常规治疗;试验组采用白头翁加味汤灌肠治疗。两组均以一个月为一疗程,连续观察两个疗程。比较两组有效率、安全性及其治疗前后血清中MDA浓度、SOD活力、IL-4和COX-2含量。结果：试验组、对照组总有效率分别为94.9%、79.5%,试验组明显＞对照组,具有统计学意义（P＜0.05）。试验组治疗前后相比,血清MDA浓度和COX-2浓度均显著下降,SOD 活性和IL-4含量均明显升高,具有统计学意义（P<0.05）;治疗后试验组与对照组相比,血清MDA 和COX-2浓度均显著下降,SOD 活性和IL-4含量均明显升高,具有统计学意义（P<0.05）。结论：应用白头翁加味汤治疗UC,血清MDA浓度、SOD活力、IL-4和COX-2含量均明显改变,可用于临床指标监测,且其疗效优于对照组,安全性高,不良反应少。     

降钙素原在呼吸道感染性疾病诊疗中的应用价值

目的探讨降钙素原(serum procalcitonin,PCT)对呼吸道感染性疾病的诊疗价值。方法选取我院收治的呼吸道感染性疾病患者47例和同期健康体检人群41例进行PCT水平测定,比较两组间PCT值的变化,并分析感染性疾病组PCT水平的分布情况。结果感染组中血清PCT水平高于健康体检人群,差异具有统计学意义(P0.05);在健康对照组中,41例体检者PCT值均波动于0.01~0.25ng/mL;感染性疾病组中,PCT值高于0.25mg/mL的比例约为57.45%,高于参考值1.0ng/mL的比例为34.04%。结论定量检测血清PCT水平对常见呼吸道感染性疾病的诊断及治疗具有一定的指导意义,但单独应用该指标敏感性低,需结合其他指标综合判断。     

胰腺癌诊断筛查方式发展的回顾性分析

目的梳理胰腺癌诊断筛查方式的历史沿革,探究在中国人口基数大、经济处于发展中的背景下,如何实现胰腺癌的"早诊早治"。方法采用系统回顾的方法进行分析。计算机检索CNKI、VIP、WanFang Data、Web of Science、PubMed和EMbase数据库,同时由两名研究员独立检索百度搜索引擎,检索时限均从建库至2018年2月28日,搜集胰腺癌筛查方法及效果评价的相关报道,进行定性描述。结果共117篇文献纳入研究。国内对胰腺癌筛查方式的探索经历了萌芽、启蒙和成长三个阶段。现有筛查方式有临床表现、影像学方法、血清肿瘤标记物和分子生物学基因诊断四种,各有利弊。单一手段无法实现较高特异性和灵敏度,联合检测成为必然趋势。考虑到应用过程中的效益问题,在高危人群中进行筛查可以有效缩小人群范围,实现精准筛查。结论我国针对胰腺癌筛查方面的研究较国外有较大差距。筛查方法呈现多样性,联合检测是必然趋势。在高危人群中进行胰腺癌筛查将成为技术瓶颈下的突破口。     

肺炎支原体CARDS毒素对小鼠IgE反应的影响及机制

目的 通过肺炎支原体产生的特异性CARDS毒素对血清总IgE的作用,研究其对机体过敏反应的影响.方法 60只SPF级BALB/c小鼠分为对照组和感染组,采用CARDS毒素暴露小鼠模型,评价CARDS毒素特异性反应;肥大细胞脱颗粒研究确定CARDS毒素特异性IgE的功能;Western blot检测JAK3及STAT6的...     

胃肠道间质瘤预后研究进展

胃肠道间质瘤(GIST)是人类胃肠道最常见的间叶源性肿瘤,大多数GIST有原癌基因c-kit突变.近年的研究发现,在无c-kit突变的胃肠道间质瘤中,存在血小板源性生长因子受体-α(PDGFR-α)基因的突变.此外,尚存在很多基因和蛋白参与了GIST的发生和发展.与一般胃肠道肿瘤相比,GIST在组织发生、临床病理、诊断治疗、预后等方面有着不同的特点.本文主要综述有关GIST预后的相关指标的研究进展.     

Postoperative hypertension after repair of coarctation of aorta in children: protective effect of propranolol?

The effects of the nonselective beta blocker, propranolol, on coarctectomy-induced hypertension were evaluated relative to changes in cardiac function, sympathetic tone, and plasma renin activity (PRA). A randomized, placebo-controlled, double-blind, age-stratified design was employed. Propranolol (n = 11, mean age 9.4 years) or placebo (n = 12, mean age 10.2 years) was started 2 days before surgery and continued until 6 days after surgery. In patients on placebo, systolic and diastolic blood pressure, heart rate, and cardiac index increased rapidly and peaked within 1 day after surgery. Over the ensuing days these increases gradually abated. Plasma epinephrine and PRA increased markedly within 12 hours after surgery, but returned quickly toward preoperative levels. In contrast, plasma norepinephrine increased more gradually and remained elevated longer. In patients on propranolol, systolic blood pressure, heart rate, cardiac index and PRA showed only negligible increases. However, diastolic blood pressure, increased even faster with propranolol than with placebo but to the same extent. Plasma catecholamines showed similar increases on the two treatments. Only in the placebo group was the code broken in the intensive care unit because of hypertension uncontrolled by sodium nitroprusside; this occurred in 6 of 12 patients. We conclude that nonselective beta blockade ameliorates the hyperdynamic circulation and increase in systolic blood pressure following coarctectomy. The initial increase in diastolic blood pressure following surgery in the propranolol group may have been caused by vascular beta-2-receptor blockade resulting in unopposed alpha-receptor-mediated vasoconstriction.     

急性脑梗死患者可溶性细胞间黏附分子-1和某些凝血指标的变化及其意义

目的:探讨急性脑梗死患者血清可溶性细胞间黏附分子-1(sICAM-1)和某些凝血指标的变化及其意义。方法:用双抗夹心酶联免疫吸附法测定69例急性脑梗死患者和30名健康对照者sICAM-1含量,并检测他们的某些凝血指标,包括血小板计数、凝血酶原时间(PT)、活化的部分凝血激酶时间(aPTT)、凝血酶时间和纤维蛋白原(FIB)含量。结果:脑梗死患者血清sICAM-1和FIB含量明显高于对照组(P<0·01),PT较正常对照组明显延长(P<0·05),sICAM-1含量与梗死面积显著相关(P<0·01)。结论:急性脑梗死患者血清sICAM-1和FIB浓度显著增高,前者与脑梗死面积相关。