血清甲状腺激素对判断肝硬化患者肝储备功能及预后的临床价值

探讨肝硬化患者血清甲状腺激素与肝硬化病变程度及血清肝纤维化指标的相关性。测定肝硬化患者血清甲状腺激素及血清肝纤维化指标,并按Child -pugh方法将肝功能分为A、B、C三级。随着临床肝硬化程度的加重,血清肝纤维化指标逐渐增高,甲状腺激素则逐渐降低。肝硬化患者T3 与PCⅢ、Ⅳ-C、LN及HA呈负相关(P<0 . 0 0 1) ,T3 与ⅣC之间的相关性随着肝硬化病情加重而更加明显(P <0 . 0 0 1) ;T4与PC -Ⅲ、Ⅳ-C及HA呈负相关(P分别为<0 . 0 2 ,<0 . 0 0 1及<0 .0 0 1) ,与LN则无明显相关(P >0 . 0 5 )。肝硬化时血清甲状腺激素与肝纤维化有一定相关性。联合检测血清PC -Ⅲ、Ⅳ-C、LN、HA及甲状腺激素对估价肝硬化的严重程度及预后有十分重要的临床价值。     

苦参碱对乙型肝炎肝纤维化患者血清IL-6、IL-8含量的影响

探讨氧化苦参碱对乙型肝炎肝纤维化的临床疗效。经肝穿活组织病理检查筛选 6 4例乙型肝炎肝纤维化患者 ,随机分为治疗组和对照组各 32例。两组治疗前后均采用放射免疫技术检测血清IL - 6、IL - 8及HA、LN、PC -Ⅲ含量。结果显示氧化苦参碱治疗前后血清IL - 6、IL - 8及HA、LN、PC -Ⅲ含量比较差异有显著性 (P <0 0 1) ,治疗后上述含量均明显下降 ,与对照组相比差异有显著性 (P <0 0 1)。证明氧化苦参碱具有抗肝纤维化效用     

联合检测血清肝纤维化指标及总胆汁酸在慢性肝病诊断中的价值

目的：探讨慢性肝病患者血清透明质酸（HA）、Ⅲ型前胶原（PCⅢ）、Ⅳ型胶原（Ⅳ-C）、层粘连蛋白（LN）和总胆汁酸（TBA）水平及其临床意义。方法：应用放射免疫法和酶法分别检测171例慢性肝病毒患者的血清HA、PCⅢ、Ⅳ-C、LN及TBA水平升高有显著差异（P＜0．01）,除慢性肝炎轻度组血清LN水平与对照组无差异（P＞0．05）外,其余各组患者血清HA、PCⅢ、Ⅳ－C、LN、TBA水平均随病程的延长而逐渐升高。结论：联合检测慢性肝病患者血清HA、PCⅢ、Ⅳ-C、LN、TBA水平即能反映肝纤维化的轻重,又能了解肝细胞炎症活动及损害程度,对临床诊断、治疗及预后判为有重要价值。     

慢性肝病患者血清HA、LN、Ⅳ-C、PCⅢ水平与临床分型及病理分期的关系

目的 :分析慢性肝病患者血清HA、LN、Ⅳ C、PCⅢ水平与临床分型及病理分期的关系。方法 :对 2 0 0例慢性肝病患者 (其中 98例采用肝活检确诊 )分别采用放免法测定血清HA、LN、Ⅳ C、PCⅢ水平。结果 :血清HA、LN、Ⅳ C、PCⅢ水平在慢性肝炎中度和病理S3期时开始明显高于对照组 (P <0 .0 5 ) ,但PCⅢ水平在病理S2 期就开始明显高于对照组 (P <0 .0 5 ) ,且随着肝脏炎症和纤维化程度的加重而升高。结论血清HA、LN、Ⅳ C、PCⅢ水平可反映肝纤维化程度 ,而且受肝脏炎症程度的影响。PCⅢ似是判断早期肝硬化的相对灵敏和可靠指标。     

血清肝纤维化指标与肝脏病理学对照研究

评价血清肝纤维化指标诊断肝纤维化病理分期的临床价值。 6 9例肝穿确诊的慢性乙型病毒性肝炎患者 ,同时进行血清HA、Ⅳ -C、PⅢP、LN的检测。以肝活检组织纤维化病理分期为金标准对以上血清学指标的诊断价值进行分析。HA、Ⅳ -C、PⅢP、LN与纤维化分期的相关系数分别为 0 30 2 (P <0 0 1)、0 6 6 3(P <0 0 1)、0 346 (P<0 0 5 )、0 0 5 6 (P >0 0 5 )。除LN外 ,其余指标血清水平均随着肝纤维化程度的加重而逐渐上升 ,其中HA、Ⅳ -C、PⅢPS3 、S4期血清水平与S1期比较有统计学差异 (P <0 0 1)。S4作为早期肝硬化诊断标准时 ,通过ROC曲线分析HA、Ⅳ -C、PⅢP、LN的曲线下面积分别为 0 74 5、0 90 9、0 732、0 4 2 5。敏感度Ⅳ -C >PⅢP >HA >LN ;特异度HA >Ⅳ -C >PⅢP >LN。血清肝纤维化指标对肝脏纤维化程度的判断有一定的指导意义。     

肝纤维化指标与疾病程度、病毒含量及病理的关系

目的探讨血清肝纤维化指标与肝炎疾病程度、血清病毒含量及肝脏病理的关系.方法选择190例肝炎患者进行血清HA,LN,Ⅳ-C,PCⅢ测定,其中急黄肝19例,慢肝轻度32例,中度79例,重度20例,肝硬变28例,慢重肝6例,携带者6例.其中乙肝145例,检测血清HBVDNA.有61例慢肝患者进行肝活组织学检查.对不同临床分型肝炎血清HA,LN,Ⅳ-C、PCⅢ进行比较,并分析HBVDNA含量及肝组织病理与之相对应关系.结果随着肝炎疾病程度的加重,血清HA,LN,Ⅳ-C,PCⅢ水平逐渐升高,以肝硬变及慢重肝为最高(P＜0.01,P＜0.01,为与携带组比较).145例乙肝中,HBV DNA(+)组与HBV DNA(-)组血清HA,LN,Ⅳ-C,PCⅢ比较无差异(P＞0.05).61例有肝脏病理的慢肝患者血清HA,LN,Ⅳ-C与病理炎症活动度成正相关(r=0.9783,r=0.9566,r=0.9745,r=0.8648),HA,LN,Ⅳ-C,PCⅢ与病理纤维化程度成正相关(r=0.9557,r=0.9455,r=0.9428,r=0.9435).HA,LN在G4期升高明显,而Ⅳ-C在肝硬变期才升高明显.PCⅢ在G1～4期无变化.PCⅢ在S2期明显升高.结论血清HA,LN,Ⅳ-C,PCⅢ可用于判断肝炎疾病的严重程度,与病毒复制强弱无关,HA,LN能较早反映肝炎炎症活动度,PCⅢ能较早反映肝炎纤维化程度.     

IFN-α对慢性乙肝肝纤维化阻断作用的研究

探讨IFN -α对慢性乙肝肝纤维化的阻断作用。 6 5例慢性乙肝患者随机分为对照组和IFN组 ,动态观察治疗前后血清HA、PCⅢ、Ⅳ -C水平及IFN疗效与治疗前肝组织纤维化程度关系。IFN -α治疗后血清HA、PCⅢ、Ⅳ -C水平较治疗前及对照组明显降低 (P <0 0 5 ,P <0 0 1) ;IFN无应答组患者治疗前血清HA、PCⅢ水平明显高于应答组 (P <0 0 5 )。IFN -α疗效与治疗前肝组织纤维化分期呈负相关 (r=- 0 6 773,P <0 0 5 )。IFNα对慢性乙肝有明显的抗肝纤维化作用 ,其抗病毒疗效受治疗前肝纤维化程度的影响     

血清肝纤维化HA、Ⅳ-C、PCⅢ和LN联合检测在布加综合征导致的肝纤维化诊断中的价值

目的:探讨血清透明质酸(hyaluronic acid,HA)、Ⅳ型胶原(type Ⅳ collagen,Ⅳ-C)、Ⅲ型前胶原肽(type Ⅲ procollagen,PCⅢ)、层黏连蛋白(laminin,LN)检测在布加综合征(budd-chiari syndrome,BCS)导致肝纤维化诊断的价值.方法:应用化学发光法分别检测我院介入科2004-03/2012-06收治的61例BCS患者(研究组)及60例健康者(对照组)血清HA、Ⅳ-C、PCⅢ、LN含量,并进行统计学分析.结果:BCS患者血清HA、Ⅳ-C、PCⅢ、LN含量均高于对照组,差异具有统计学意义,分别为t=6.879,P<0.05;t=7.071,P<0.05;t=5.753,P<0.05;t=6.330,P<0.05.研究组进行组间比较,血清HA、Ⅳ-C、PCⅢ、LN含量差异无统计学意义(P>0.05).结论:血清HA、Ⅳ-C、PCⅢ、LN作为检测肝纤维化灵敏指标,联合检测对BCS导致肝纤维化的诊断和临床治疗具有重要意义.     

核糖核酸对慢性肝病患者血清HA,LN,Ⅳ—C,PCⅢ的影响

目的:观察RNA抗肝纤维化疗效。方法:应用RNA治疗慢性肝炎130例,肝硬变48例,并设甘利欣对照组。结果:治疗组血清白蛋白及肝纤维化指标中的HA、LN、Ⅳ-C、PCⅢ明显下降,复常率明显高于对照组(P<0.05)。结论:RNA能降低慢性肝痛中血清HA、LN、Ⅳ-C、PⅢ的水平,其抗纤维化作用可能是通过保护和修复肝细胞膜而达到的。     

慢性乙型肝炎和肝炎肝硬化患者血浆内皮素-1水平与血清肝纤维化指标和门静脉宽度的关系

目的探讨慢性乙型肝炎和肝炎肝硬化患者血浆内皮素-1（ET-1）水平的变化及其与肝纤维化血清指标和门静脉宽度的关系。方法采用放射免疫法测定急性乙型肝炎、慢性乙型肝炎和肝炎肝硬化患者血浆ET-1、血清透明质酸（HA）、层粘蛋白（LN）、Ⅲ型胶原肽（PⅢP）和Ⅳ型胶原（Ⅳ-C）水平。结果23例急性乙型肝炎肝纤维化血清指标中仅HA水平较正常对照组明显升高；81例慢性乙型肝炎和64例肝炎肝硬化患者。血浆ET-1、血清HA、LN、PⅢP和Ⅳ-C水平均较正常对照组明显升高。在慢性乙型肝炎中血浆ET-1、血清HA、LN、PⅢP和Ⅳ-C水平随着肝脏损害程度（轻、中、重度）的加重而逐步升高。在慢性乙型肝炎和肝炎肝硬化患者中。血浆ET-1水平与血清HA、LN、PⅢP和Ⅳ-C水平明显相关；同时ET-1还与患者门静脉宽度明显相关。结论ET-1、HA、LN、PⅢP和Ⅳ-C与慢性乙型肝炎肝脏损害相关：ET-1与慢性乙型肝炎和肝炎肝硬化患者肝纤维化程度和门静脉高压有一定的关系。     

Research and Evaluation of the Influence of the Construction of the Gate and the Influence of the Piston Velocity on the Distribution of Gases into the Volume of the Casting

Distribution of gasses to the cast volume and volume of pores can be maintained within the acceptable limits by means of correct setting of technological parameters of casting and by selection of suitable structure and gating system arrangement. The main idea of this paper solves the issue of suitability of die casting adjustment—i.e., change of technological parameters or change of structural solution of the gating system—with regards to inner soundness of casts produced in die casting process. Parameters which were compared included height of a gate and velocity of a piston. The melt velocity in the gate was used as a correlating factor between the gate height and piston velocity. The evaluated parameter was gas entrapment in the cast at the end of the filling phase of die casting cycle and at the same time percentage of porosity in the samples taken from the main runner. On the basis of the performed experiments it was proved that the change of technological parameters, particularly of pressing velocity of the piston, directly influences distribution of gasses to the cast volume.     

Weighing the QT Intervals with the Slope or the Amplitude of the T Wave

Objective: The reproducibility of QT interval measurements is low, even for the mean QT interval based on the standard ECG. In this study we analyzed whether the reproducibility of the mean weighed QT interval was better than the simple mean QT interval. The weighing was based on the amplitude of the T wave or the slope of the steepest tangent on the terminal part of the T wave. Material and methods: 12‐lead ECGs of 130 postmyocardial infarction patients were obtained. The QT intervals were measured by the tangent‐method on two occasions by the same observer Mismatch QT intervals were defined as QT intervals that were measured at only one occasion. Sixteen ECGs were rejected. The data were split into 34 and 80 ECGs for optimization and validation of the weighing, respectively. The weighed QT dispersion was calculated as the weighed mean of the three longest minus the weighed mean of the three shortest QT intervals. Results: Weighing with the slope increased the reproducibility by 41% (P = 3 10^‐6), but weighing with the amplitude reduced it by 20% (P = 0.02). However, if measurements with errors above 75 ms were rejected, weighing with the slope or the amplitude increased the reproducibility with 26% and 20% (P = 0.02), respectively. Weighing did not change the reproducibility of the weighed QT dispersion. Conclusion: Weighing with the slope improved the reproducibility of the mean weighed QT interval. However, if measurements with errors above 75 ms were rejected, weighing with the amplitude also increased the reproducibility. Weighing did not change the reproducibility of the weighed QT dispersion. Weighing is particularly efficient at reducing the negative impact of mismatch QT intervals on the reproducibility. A.N.E. 2002;7(1):4–9     

县级以下综合医疗机构医务人员对现代结控知识的认识现状调查

目的本文旨在了解医务人员现代结控知识掌握的现状及培训效果?方法于培训前后进行问卷调查,内容包括:病例发现?结核病诊断及化疗?结果培训前疫情报告和转诊,回答正确者占75.2%?71.7%;对临床表现?查痰和诊断依据,回答正确者占83.5%?42.5%?40.8%;抗痨药物?用药方法?化疗原则?短化方案?短化疗程?治愈标准六项,回答正确者占58%?14.4%?20.8%?9.2%?17%?24.3%?培训后再次调查发现,90%以上医务人员对现代结控基本知识已掌握?结论各级医务人员现代结控知识是很贫乏的,因此,对其进行系统培训是极为必要的,此项工作省时?省力?投入少,可收到事半功倍的效果。     

大骨节病病区水,粮实验对动物的骨和软骨中化学元素组成的影响

用质子激发 X 线荧光分析方法(PIXE)测定了大骨节病病区和非病区的水、粮以及用该水粮喂养的大白鼠的肋软骨和硬骨中22种化学元素的含量。结果发现水粮中存在差异的元素反应在用该水粮喂养的大白鼠的骨、软骨中也存在差异,含量都低的元素有 P、Mn、Cu、As、Zn。都高的有铅。其中锌低在水、粮、硬骨和软骨中都完全一致呈非常显著性差异(p<0.01)。提示病区水、粮中化学元素对骨质的影响不是单一元素缺乏或过多所致,而是多种元素的复合因素。     

Assessment of the Soft-Tissue Seal at the Interface between the Base of the Fixed Denture Pontic and the Oral Mucosa

Fixed dentures (bridges) are often selected as a treatment option for a defective prosthesis. In this study, we assess the contact condition between the base of the pontic and oral mucosa, and examine the effect of prosthetic preparation and material biocompatibility. The molars were removed and replaced with experimental implants with a free-end type bridge superstructure after one week. In Experiment 1, we assessed different types of prosthetic pre-treatment: (1) the untreated control group (Con: mucosa recovering from the tooth extraction); (2) the laser irradiation group (Las: mucosa recovering after the damage caused by a CO₂ laser); and (3) the tooth extraction group (Ext: mucosa recovering immediately after the teeth extraction). In Experiment 2, five materials (titanium, zirconia, porcelain, gold-platinum alloy, and self-curing resin) were placed at the base of the bridge pontic. Four weeks after the placement of the bridge, the mucosa adjacent to the pontic base was histologically analyzed. In Experiment 1, the Con and Las groups exhibited no formation of an epithelial sealing structure on the pontic base. In the Ext group, adherent epithelium was observed. In Experiment 2, the sealing properties at the pontic interface were superior for titanium and the zirconia compared with those made of porcelain or gold-platinum alloy. In the resin group, a clear delay in epithelial healing was observed.     

高胆红素血症对肿瘤标志物测定的影响探讨

目的探讨高胆红素血症对Ca19-9、Ca24-2和CEA检测的影响.方法对320例胆管、胆囊良恶性疾病病人,15例胆囊炎病人的胆汁和血清以及10例肝硬化、10例黄疸肝炎病人进行Ca19-9、Ca24-2和CEA检测.结果在良性胆管、胆囊疾病中,Ca19-9的假阳性最高;在胆红素增高的良性疾病中,Ca19-9假阳性率达46.7%;15例胆汁和血清以及10例肝硬化和10例黄疸肝炎病人中,Ca19-9的假阳性率分别为93%、20%、80%和80%.结论高胆红素血症对Ca19-9检测影响最明显,胆囊、胆管良恶性疾病鉴别时,以Ca24-2和CEA检测为佳.     

Echocardiography in the Emergency Department: From the Perspective of the Emergency Physician and the Cardiologist

Echocardiography performed in the emergency department must adapt to this new setting for noninvasive diagnostic testing. Emergency physicians require echocardiography to provide rapid diagnosis in life-threatening emergencies. New initiatives are being proposed by emergency physicians in the delivery of this test. Cardiologists now use echocardiography in the emergency-department to make the diagnosis of heart disease earlier and with greater accuracy.     

Tracing the protectors path from the germ line to the genome

One of the basic principles that nature uses in evolution is to recycle successful concepts and create new functions by modifying existing units. This conservatism in evolution has resulted in an astonishingly high sequence identity of genes, even between evolutionarily distant species such as the nematode Caenorhabditis elegans and Homo sapiens. The recycling of successful concepts in conjunction with gene duplication events has also led to the existence of highly homologous proteins within the genome of many species. Often, these homologous proteins show similar, yet distinct functions that, in combination with their individual tissue distribution, define their specific physiological role. One prominent example is the p53 protein family, which consists of p53, p63, and p73. Recent advances in understanding the specific biological functions of these members have shed some light onto the evolution of this crucial protein family, from a germ line-specific quality-control factor to a somatic tumor suppressor. Furthermore, structures of the oligomerization domains of the mammalian paralogs, p53 and p73, and invertebrate orthologs, CEP-1 and DMP53, have delineated evolutionary changes and revealed that the oligomerization domain of p53 lacks additional stabilizing structural elements present in all other p53 family members. This suggests that p53 is the most recent evolutionary member of this protein family and predicts a mechanism for p53 activation.