Mood Status and Quality of Life in Kidney Recipients After Transplantation

Background

Kidney transplantation is performed as a useful treatment to improve the quality of life (QOL) of patients with end-stage renal failure; however, the correlation between mood status and QOL among recipients post-kidney transplantation have yet to be clarified.

Tamura纹理分析在声像图监控HIFU消融兔VX2乳腺肿瘤中的应用

目的探讨Tamura纹理参数对声像图监控高强度聚焦超声(HIFU)辐照下靶组织凝固性坏死情况的评价效果。方法根据HIFU辐照兔VX2乳腺肿瘤的辐照强度,将120只新西兰白兔随机分为90W、120W、150W组,每组40只,辐照时间均为3s。采集辐照前和辐照后即刻的声像图,提取Tamura纹理参数中的方向度、粗糙度和对比度;通过支撑适量机筛选,获得决策超平面,并对结果进行分析。结果 Tamura判断凝固性坏死的敏感度为89.71%(61/68),特异度为69.23%(36/52),准确率为80.83%(97/120);灰度判断凝固性坏死的敏感度为57.35%(39/68),特异度为63.46%(33/52),准确率为60.00%(72/120),前者的敏感度和准确率均明显高于后者(P均<0.001)。90 W组中,Tamura判断凝固性坏死的准确率为77.50%(31/40),高于灰度(20/40,50.00%,P=0.011);120 W组中,Tamura判断凝固性坏死的准确率为80.00%(32/40),高于灰度(22/40,55.00%,P=0.017)。结论声像图Tamura纹理分析判断凝固性坏死是可行的,且较之灰度具有一定优越性。     

湖州铁线莲乙醇提取物体外抗K562与MGC-803活性研究

[目的]研究湖州铁线莲乙醇提取物体外抗肿瘤作用。[方法]干燥湖州铁线莲经石油醚脱脂、乙醇回流得到初提物。采用MTT法观察经AB-8树脂静态吸附70%乙醇解析处理后湖州铁线莲乙醇提取物体外对人白血病K562细胞及人胃癌MGC-803细胞的增殖抑制作用。[结果]在倒置显微镜下,湖州铁线莲处理组K562细胞形态不规则,MGC-803细胞体积缩小,部分细胞收缩变圆。两种细胞均生长缓慢,随着药物作用时间的延长,细胞的贴壁能力逐渐减弱,呈现出典型的凋亡形态学改变。MTT实验表明湖州铁线莲乙醇提取物对K562细胞及MGC-803细胞有增殖抑制作用,其作用68h的IC₅₀值分别为133.66mg·L^-1、317.87mg·L^-1。[结论]体外实验中,湖州铁线莲乙醇提取物具有抗肿瘤作用,且呈现良好的浓度-效应依赖关系。     

吴兴铁线莲总黄酮的提取及体外抗肿瘤活性研究

目的 对吴兴铁线莲总黄酮成分进行分离提取,研究其抗肿瘤活性。方法 采用紫外可见分光光度法测定总黄酮含量,以聚酰胺层析柱层析乙醇洗脱提纯吴兴铁线莲中的黄酮成分得到黄酮浸膏,通过MTT比色法用酶标仪测定光吸收值,计算半数抑制浓度(IC₅₀),观察100~25 600 mg·L^-1不同浓度的铁线莲黄酮溶液对小鼠骨髓瘤细胞SP2/0体外增殖的作用,来反映其抑制肿瘤细胞生长的灵敏性。结果 铁线莲浸膏稀释液经芦丁标准曲线吸光度测定,浸膏中黄酮含量为82.7%,铁线莲干粉中黄酮含量为47 mg·g^-1,2.843 g铁线莲浸膏经洗脱提纯得到黄酮浸膏0.158 g。提纯后铁线莲黄酮溶液对骨髓瘤细胞SP2/0的增殖抑制率随总黄酮浓度的升高而增加,最后趋于稳定,其IC₅₀值为408.8 mg·L^-1。结论 吴兴铁线莲黄酮提取物能抑制骨髓瘤细胞SP2/0体外增殖,具有特异性强、灵敏度高的抗肿瘤活性,其良好的量效关系可为防治肿瘤潜在价值的开发应用提供依据。     

湖州铁线莲多糖的分离纯化及体外抗肿瘤活性研究

[目的]分离纯化湖州铁线莲粗多糖(CHTP)并测定其体外抗肿瘤活性。[方法]采用DEAE-cellulose 52离子交换层析和Sephadex G-200凝胶过滤层析分离纯化CHTP;采用MTT法测定CHTP及经纯化后多糖(CHTPII-1)对体外培养的人肝癌细胞HepG2、人胃癌细胞MGC8-03和人白血病细胞K562等三种肿瘤细胞的抑制作用。[结果]经分离纯化获得多糖组分CHT-PII-1;在CHTP浓度为250～1000mg.L-1或CHTPII-1浓度为125～500mg.L-1的检测范围内,CHTP和CHTPII-1对HepG2、MGC8-03和K562三种细胞的抑制率均随着多糖浓度的增大而增大。除了MGC8-03细胞62.5mg.L-1 CHTPII-1处理组和K562细胞125mg.L-1 CHTP处理组的MTT检测OD值与阴性对照组间无显著差异外,其余各组的MTT检测OD值均显著或极显著低于阴性对照组。[结论]CHTP和CHTPII-1对HepG2、MGC8-03和K562等三种肿瘤细胞均有较强的抑制作用,且其抑制率与多糖浓度呈良好的量效关系。     

基于颜色与纹理的痤疮痧象证型自动分类初探

目的 走罐是中医治疗系统中一种非药物治疗手段.痧象是走罐后在背部显现的图像,含有很多疾病的信息,患者的证型就是其中一种.本文主要完成3种痤疮痧象证型的自动分类.方法 首先分析中医走罐后,背部痤疮痧象图像的特点,然后对7个穴位模块提取Tamura纹理特征,同时针对背部整体痧象图像提取Tamura纹理特征和颜色特征,再通过支持向量机分类方法进行分类.结果 提取的痧象特征可以较好地完成湿热、心火炽盛、脾气虚三种痧象证型的自动分类.结论 痤疮痧象自动分类具有可行性,为中医客观诊断和验证打下初步基础.     

Diminished growth in fetuses born preterm after spontaneous labor or rupture of membranes

We examined biparietal diameter, abdominal circumference, and birth weight in 148 preterm infants to assess fetal growth. A statistically significant proportion of preterm fetuses had biparietal diameter and abdominal circumference values below the fiftieth and tenth percentile levels as compared with that expected in normal fetuses. Similarly, birth weight of infants in the study fell significantly below the fiftieth and tenth percentiles relative to Brenner's curve. We conclude that diminished fetal growth is associated with early delivery secondary to preterm labor or preterm premature rupture of membranes or both. Additionally, since biparietal diameters in preterm fetuses are smaller than those of normal fetuses the prediction of gestational age by cephalometry should be advanced by 7 to 10 days.     

Rendezvous Technique Using Double Balloon Endoscope for Removal of Multiple Intrahepatic Bile Duct Stones in Hepaticojejunostomy After Living Donor Liver Transplant: A Case Report

Cholangitis is a major complication following transplantation. We report a living donor liver transplant (LDLT) patient with cholangitis due to multiple stones in the intrahepatic bile duct during hepaticojejunostomy anastomosis, who was successfully treated with the rendezvous technique using double balloon endoscope. A 64-year-old woman underwent LDLT with right lobe graft and hepaticojejunostomy for Wilson disease. There was bile leakage with biliary peritonitis, which was treated conservatively after transplant. Two years after surgery, she developed reiterated cholangitis due to stenosis of hepaticojejunostomy anastomosis and multiple stones in the intrahepatic bile ducts.Percutaneous transhepatic biliary drainage was performed. The size of the drainage tube was increased, and the anastomotic area was dilated in a stepwise manner using a balloon catheter. The stones were crushed and lithotomy was performed using electronic hydraulic lithotripsy through cholangioscopy. Finally, lithotomy was performed for the remaining stones through endoscopic retrograde cholangiography with the rendezvous technique using the double balloon endoscope.Rendezvous approach with percutaneous transhepatic biliary drainage and double balloon endoscopic retrograde cholangiography was an effective treatment for the multiple intrahepatic stones in hepaticojejunostomy following LDLT with right lobe graft.