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1The role of whole brain radiation therapy in the management of newly diagnosed brain metastases: a systematic review and evidence-based clinical practice guideline显示文摘Gaspar LE Mehta MP Patchell RA Burri SH Robinson PD Morris RE Ammirati M Andrews DW Asher AL Cobbs CS Kondziolka D Linskey ME Loeffler JS McDermott M Mikkelsen T Olson JJ Paleologos NA Ryken TC Kalkanis SN. 2010中国神经肿瘤杂志2010,8,1:98
2癌症治疗的靶点——酪氨酸激酶显示文摘蛋白酪氨酸激酶家族(TKs)催化磷酸从ATP转移至多肽链酪氨酸残基上.人类基因组包括了90个TK和43个类似TK的基因,这些基因的产物调节细胞的增生、存活、分化、功能和运动.早在25年前,在逆转录病毒诱导产生的动物肿瘤中,就认为TKs可能是癌基因.然而,因为仅有极少的证据说明其在人类癌症中发挥始动作用,并且考虑到药物的特异性和毒性,所以在开发癌症治疗药物时被忽视了.但随着TK融合蛋白BCR-ABL抑制剂甲磺酸伊马替尼(imatinib mesylate,商品名为格列卫)在慢性粒细胞白血病(CML)中的成功应用,TKs的前景发生了根本的改变.现在认为TKs是癌症化疗很好的靶点.本文综述了TKs靶向治疗癌症的情况,并探讨了其面临的挑战和将来的发展前景.Krause DS Van Etten RA 黄艳 2005中国处方药2005,,10:45
3应用三维有限单元法计算应力强度因子显示文摘描述了两种基于有限单元计算面形裂纹应力强度因子的方法,建议了一种创造三维有限单元网格的途径。计算方法的精度通过和其它解析解或数值解的比较得到了说明。Smith,RA 林晓斌 1998中国机械工程1998,9,11:28
4室内氡与肺癌关系研究显示文摘目的 直接调查居室水平氡浓度对居民肺癌危险度的影响 ,并与由矿工受照结果推导的结论相比较。方法 在甘肃省平凉、庆阳两地区进行病例 对照研究。该地区居民稳定而室内氡水平较高。肺癌病例必须是在 1994年 1月至 1998年 4月期间诊断 ,年龄在 30~ 75岁之间 ,居住在平凉和庆阳两地区的居民。根据人口调查资料随机选取对照 ,对照要在年龄、性别、地区方面与病例相匹配。在过去 5~ 30年期间 ,凡住过两年以上的房间都布放了氡探测器。氡测量涵盖了 77%的照射周期。结果 病例居室的平均氡浓度为 2 30 4Bq m3 (n =76 8) ,对照为 2 2 2 2Bq m3 (n =16 5 9)。居民肺癌危险度随室内氡水平的增高有所上升 (P <0 0 0 1)。根据线性模型 ,对全部研究个体而言 ,在 10 0Bq m3 情况下 ,附加比值比 (EOR)为 0 19(95 %CI:0 0 5 ,0 47)。对测量涵盖了 10 0 %照射周期的个体 ,为 0 31(95 %CI:0 10 ,0 81)。在对照射的不确定度进行调整后 ,估算值可增加70 %。结论 研究结果证明室内水平氡照射会增加肺癌危险度 。王作元 Lubin JH 王陇德 张守志 Boice JD Jr 崔宏星 张淑蓉 Conrath SC 夏英 尚兵 Brenner A 雷苏文 Metayer KC 曹吉生 Chen KW 雷淑杰 Kleinerman RA 2002中华放射医学与防护杂志2002,22,3:28
5美国国立老化研究所与阿尔茨海默病协会诊断指南写作组:对阿尔茨海默病诊断指南的推荐和介绍显示文摘背景:尽管早在1984年就制定了阿尔茨海默病(AD)的临床诊断标准,但是近年来的研究进展从未被补充到诊断标准中。因此,制定一个新的临床诊断标准已经成为大家的共识。方法:在2009年,美国国立老化研究所与AD协会组织了一系列圆桌会议,目的是讨论用于AD临床和科研的诊断标准的修订路线。经讨论后决定组建3个独立的工作组,分别制定AD在3个不同疾病发展阶段的诊断标准,即痴呆阶段、有症状的痴呆前期、无症状的临床前期。结果:修订版AD诊断标准与1984年版诊断标准有两处显著的差别:加入了能提示潜在疾病状态的生物标志物的内容;制定了不同认知障碍阶段的诊断标准。其中,3个工作组一致认为,生物标志物的诊断价值还需要更多研究来规范和验证。另外,修订版中还明确区分了仅存在AD病理生理改变(语义性)和仅存在AD临床表现(概念性)两种诊断的差别,该内容在1984年版中没有体现。结论:修订版AD诊断标准中共产生了3个文件,其中,核心的关于AD的痴呆阶段诊断标准和可归于AD的MCI阶段标准推荐用于临床诊断,而临床前期诊断标准仅推荐用于研究使用。Jack CR Jr Albert MS Knopman DS McKhann GM Sperling RA Carrillo MC Thies B Phelps CH 贾建平(译) 李丹(译) 閵芳菊(译) 陆璐(译) 张逸驰(译) 黄丽(译) 2012中华神经科杂志2012,45,5:26
6美国国立老化研究所与阿尔茨海默病协会诊断指南写作组:阿尔茨海默病临床前阶段的定义显示文摘阿尔茨海默病(AD)的病理生理过程在痴呆诊断的多年前就开始了。这一长期的AD“临床前”阶段是治疗干预的关键机会,但需进一步阐明AD的病理级联过程和临床症状出现之间的联系。美国国立老化研究所和AD协会召集了一个国际工作组对AD生物标志物、流行病学和神经心理学的证据进行综述并提出建议,以确定能够预测由“正常”认知到轻度认知功能障碍(MCI)及AD痴呆的最佳预测指标。根据目前已有的主要科学证据,我们提出了一个概念性的框架和用于操作的研究标准,以通过纵向临床研究来验证和改进这些模型。这些建议仅用于研究目的,目前不涉及临床应用。我们希望这些建议能提供一个共识,以推进临床前AD的研究,最终推动更早期治疗干预的进展,使得一些疾病减缓药物的疗效发挥最大。Sperling RA Aisen PS Beckett LA Bennett DA Craft S Fagan AM Iwatsubo T Jack CR Jr Kaye J Montine TJ Park DC Reiman EM Rowe CC Siemers E Stern Y Yaffe K Carrillo MC Thies B Morrison-Bogorad M Wagster MV Phelps CH 贾建平(译) 郭起浩(译) 黄丽(译) 陆璐(译) 张逸驰(译) 邢怡(译) 2012中华神经科杂志2012,45,5:22
7Assessment of drug-induced hepatotoxicity in clinical practice: A challenge for gastroenterologists显示文摘Currently, pharmaceutical preparations are serious contributors to liver disease; hepatotoxicity ranking as the most frequent cause for acute liver failure and post-commercialization regulatory decisions. The diagnosis of hepatotoxicity remains a difficult task because of the lack of reliable markers for use in general clinical practice. To incriminate any given drug in an episode of liver dysfunction is a step-by-step process that requires a high degree of suspicion, compatible chronology, awareness of the drug’s hepatotoxic potential, the exclusion of alternative causes of liver damage and the ability to detect the presence of subtle data that favors a toxic etiology. This process is time-consuming and the final result is frequently inaccurate. Diagnostic algorithms may add consistency to the diagnostic process by translating the suspicion into a quantitative score. Such scales are useful since they provide a framework that emphasizes the features that merit attention in cases of suspected hepatic adverse reaction as well. Current efforts in collecting bona fide cases of drug-induced hepatotoxicity will make refinements of existing scales feasible. It is now relatively easy to accommodate relevant data within the scoring system and to delete low-impact items. Efforts should also be directed toward the development of an abridged instrument for use in evaluating suspected drug-induced hepatotoxicity at the very beginning of the diagnosis and treatment process when clinical decisions need to be made. The instrument chosen would enable a confident diagnosis to be made on admission of the patient and treatment to be fine-tuned as further information is collected.Raúl J Andrade Mercedes Robles Alejandra Fernández-Castaer Susana López-Ortega M Carmen López-Vega M Isabel Lucena 2007World Journal of Gastroenterology2007,13,3:18
8非维生素K拮抗与维生素K拮抗口服抗凝剂与脑出血患者住院死亡之间的关系显示文摘尽管非维生素K拮抗口服抗凝剂(non-vitamin K antagonist oral anticoagulants, NOACs)越来越多地应用于预防血栓栓塞性疾病,但关于NOACs相关性脑出血的数据仍然有限。刘青 叶鹏 Inohara T Xian Y Liang L Matsouaka RA Saver JL Smith EE Schwamm LH Reeves MJ Hernandez AF Bhatt DL Peterson ED Fonarow GC 2018中华高血压杂志2018,26,2:16
9Serum and urine metabolomic fingerprinting in diagnostics of inflammatory bowel diseases显示文摘AIM:To evaluate the utility of serum and urine metabolomic analysis in diagnosing and monitoring of inflammatory bowel diseases(IBD).METHODS:Serum and urine samples were collected from 24 patients with ulcerative colitis(UC),19 patients with the Crohn’s disease(CD)and 17 healthy controls.The activity of UC was assessed with the Simple Clinical Colitis Activity Index,while the activity of CD was determined using the Harvey-Bradshaw Index.The analysis of serum and urine samples was performed using proton nuclear magnetic resonance(NMR)spectroscopy.All spectra were exported to Matlab for preprocessing which resulted in two data matrixes for serum and urine.Prior to the chemometric analysis,both data sets were unit variance scaled.The differences in metabolite fingerprints were assessed using partial least-squaresdiscriminant analysis(PLS-DA).Receiver operating characteristic curves and area under curves were used to evaluate the quality and prediction performance of the obtained PLS-DA models.Metabolites responsible for separation in models were tested using STATISTICA10 with the Mann-Whitney-Wilcoxon test and the Student’s t test(α=0.05).RESULTS:The comparison between the group of patients with active IBD and the group with IBD in remission provided good PLS-DA models(P value 0.002for serum and 0.003 for urine).The metabolites that allowed to distinguish these groups were:N-acetylated compounds and phenylalanine(up-regulated in serum),low-density lipoproteins and very low-density lipoproteins(decreased in serum)as well as glycine(increased in urine)and acetoacetate(decreased in urine).The significant differences in metabolomic profiles were also found between the group of patients with active IBD and healthy control subjects providing the PLS-DA models with a very good separation(P value<0.001 for serum and 0.003 for urine).The metabolites that were found to be the strongest biomarkers included in this case:leucine,isoleucine,3-hydroxybutyric acid,N-acetylated compounds,acetoacetate,glycine,phenylalanine and lactate(increased in serum),creatine,dimethyl sulfone,histidine,choline and its derivatives(decreased in serum),as well as citrate,hippurate,trigonelline,taurine,succinate and 2-hydroxyisobutyrate(decreased in urine).No clear separation in PLS-DA models was found between CD and UC patients based on the analysis of serum and urine samples,although one metabolite(formate)in univariate statistical analysis was significantly lower in serum of patients with active CD,and two metabolites(alanine and N-acetylated compounds)were significantly higher in serum of patients with CD when comparing jointly patients in the remission and active phase of the diseases.Contrary to the results obtained from the serum samples,the analysis of urine samples allowed to distinguish patients with IBD in remission from healthy control subjects.The metabolites of importance included in this case up-regulated acetoacetate and down-regulated citrate,hippurate,taurine,succinate,glycine,alanine and formate.CONCLUSION:NMR-based metabolomic fingerprinting of serum and urine has the potential to be a useful tool in distinguishing patients with active IBD from those in remission.Tomasz Dawiskiba Stanislaw Deja Agata Mulak Adam Zabek Ewa Jawień Dorota Pawelka Miroslaw Banasik Agnieszka Mastalerz-Migas Waldemar Balcerzak Krzysztof Kaliszewski Jan Skóra Piotr Bar Krzysztof Korta Kornel Pormańczuk Przemyslaw Szyber Adam Litarski Piotr Mlynarz 2014World Journal of Gastroenterology2014,20,1:15
10Relationship between diversion colitis and quality of life in rectal cancer显示文摘AIM:To investigated the incidence of diversion colitis(DC) and impact of DC symptoms on quality of life(QoL) after ileostomy reversal in rectal cancer.METHODS:We performed a prospective study with 30 patients who underwent low anterior resection and the creation of a temporary ileostomy for the rectal cancer between January 2008 and July 2009 at the Department of Surgery,Korea University Anam Hospital.The participants totally underwent two rounds of the examinations.At first examination,endoscopies,tissue biopsies,and questionnaire survey about the symptom were performed 3-4 mo after the ileostomy creations.At second examination,endoscopies,tissue biopsies,and questionnaire survey about the symptom and QoL were performed 5-6 mo after the ileostomy reversals.Clinicopathological data were based on the histopathological reports and clinical records of the patients.RESULTS:At the first examination,all of the patients presented with inflammation,which was mild in 15(50%) patients,moderate in 11(36.7%) and severe in 4(13.3%) by endoscopy and mild in 14(46.7%) and moderate in 16(53.3%) by histology.At the second examination,only 11(36.7%) and 17(56.7%) patients had mild inflammation by endoscopy and histology,respectively.There was no significant difference in DC grade between the endoscopic and the histological findings at first or second examination.The symptoms detected on the first and second questionnaires were mucous discharge in 12(40%) and 5(17%) patients,bloody discharge in 5(17%) and 3(10%) patients,abdominal pain in 4(13%) and 2(7%) patients and tenesmus in 9(30%) and 5(17%) patients,respectively.We found no correlation between the endoscopic or histological findings and the symptoms such as mucous discharge,bleeding,abdominal pain and tenesmus in both time points.Diarrhea was detected in 9 patients at the second examination;this number correlated with the severity of DC(0%,0%,66.7%,33.3% vs 0%,71.4%,23.8%,4.8%,P = 0.001) and the symptom-related QoL(r =-0.791,P < 0.001).CONCLUSION:The severity of DC is related to diarrhea after an ileostomy reversal and may adversely affect QoL.Dong Nyoung Son Dong Jin Choi Si Uk Woo Jin Kim Bo Ra Keom Chul Hwan Kim Se Jin Baek Seon Hahn Kim 2013World Journal of Gastroenterology2013,19,4:14
11Future prospectives for the management of chronic hepatitis B显示文摘Chronic hepatitis B virus infection affects about 400 million people around the globe and causes approximately one million deaths a year. Since the discovery of interferon-α as a therapeutic option the treatment of hepatitis B has evolved fast and management has become increasingly complicated. The amount of viral replication reflected in the viral load (HBV-DNA) plays an important role in the development of cirrhosis and hepatocellular carcinoma. The current treatment modalities for chronic hepatitis B are immunomodulatory (interferons) and antiviral suppressants (nucleoside and nucleotide analogues) all with their own advantages and limitations. An overview of the treatment efficacy for both immunomodulatory as antiviral compounds is provided in order to provide the clinician insight into the factors influencing treatment outcome. With nucleoside or nucleotide analogues suppression of viral replication by 5-7 log10 is feasible, but not all patients respond to therapy. Known factors influencing treatment outcome are viral load, ALT levels and compliance. Many other factors which might influence treatment are scarcely investigated. Identifying the factors associated with response might result in stopping rules, so treatment could be adapted in an early stage to provide adequate treatment and avoid the development of resistance. The efficacy of compounds for the treatment of mutant virus and the cross- resistance is largely unknown. However, genotypic and phenotypic testing as well as small clinical trials provided some data on efficacy in this population. Discontinuation of nucleoside or nucleotide analogues frequently results in viral relapse; however, some patients have a sustained response. Data on the risk factors for relapse are necessary in order to determine when treatment can be discontinued safely. In conclusion: chronic hepatitis B has become a treatable disease; however, much research is needed to tailor therapy to an individual patient, to predict the sustainability of response and determine thebest treatment for those failing treatment.WF Leemans HLA Janssen RA de Man 2007World Journal of Gastroenterology2007,13,18:14
12Predictors of mortality after transjugular portosystemic shunt显示文摘AIM:To investigate if echocardiographic and hemodynamic determinations obtained at the time of transjugular intrahepatic portosystemic shunt(TIPS)can provide prognostic information that will enhance risk stratification of patients.METHODS:We reviewed medical records of 467 patients who underwent TIPS between July 2003 and December 2011 at our institution.We recorded information regarding patient demographics,underlying liver disease,indication for TIPS,baseline laboratory values,hemodynamic determinations at the time of TIPS,and echocardiographic measurements both before and after TIPS.We recorded patient comorbidities that may affect hemodynamic and echocardiographic determinations.We also calculated Model for Endstage Liver Disease(MELD)score and Child Turcotte Pugh(CTP)class.The following pre-and post-TIPS echocardiographic determinations were recorded:Left ventricular ejection fraction,right ventricular(RV)systolic pressure,subjective RV dilation,and subjective RV function.We recorded the following hemodynamic measurements:Right atrial(RA)pressure before and after TIPS,inferior vena cava pressure before and after TIPS,free hepatic vein pressure,portal vein pressure before and after TIPS,and hepatic venous pressure gradient(HVPG).RESULTS:We reviewed 418 patients with portal hypertension undergoing TIPS.RA pressure increased by a mean ± SD of 4.8 ± 3.9 mmH g(P < 0.001),HVPG decreased by 6.8 ± 3.5 mmH g(P < 0.001).In multivariate linear regression analysis,a higher MELD score,lower platelet count,splenectomy and a higher portal vein pressure were independent predictors of higher RA pressure(R = 0.55).Three variables predicted 3-mo mortality after TIPS in a multivariate analysis:Age,MELD score,and CTP grade C.Change in the RA pressure after TIPS predicted long-term mortality(per 1 mm Hg change,HR = 1.03,95%CI:1.01-1.06,P < 0.012).CONCLUSION:RA pressure increased immediately after TIPS particularly in patients with worse liver function,portal hypertension,emergent TIPS placement and history of splenectomy.The increase in RA pressure after TIPS was associated with increased mortality.Age,splenectomy,MELD score and CTP grade were independent predictors of long-term mortality after TIPS.Mona Ascha Sami Abuqayyas Ibrahim Hanouneh Laith Alkukhun Mark Sands Raed A Dweik Adriano R Tonelli 2016World Journal of Hepatology2016,8,11:13
13drug-induced autoimmune liver disease:a diagnostic dilemma of an increasingly reported disease显示文摘The aetiology of autoimmune hepatitis(AIH) is uncer-tain but the disease can be triggered in susceptible patients by external factors such as viruses or drugs.AIH usually develops in individuals with a genetic back-ground mainly consisting of some risk alleles of the major histocompatibility complex(HLA).Many drugs have been linked to AIH phenotypes,which sometimes persist after drug discontinuation,suggesting that they awaken latent autoimmunity.At least three clini-cal scenarios have been proposed that refers to drug- induced autoimmune liver disease(DIAILD):AIH with drug-induced liver injury(DILI); drug induced-AIH(DI-AIH); and immune mediated DILI(IM-DILI).In addi-tion,there are instances showing mixed features of DI-AIH and IM-DILI,as well as DILI cases with positive autoantibodies.Histologically distinguishing DILI from AIH remains a challenge.Even more challenging is the differentiation of AIH from DI-AIH mainly relying in histological features; however,a detailed standard-ised histologic evaluation of large cohorts of AIH and DI-AIH patients would probably render more subtle features that could be of help in the differential diag-nosis between both entities.Growing information on the relationship of drugs and AIH is being available,being drugs like statins and biologic agents more fre-quently involved in cases of DIAILD.In addition,there is some evidence on the fact that patients diagnosed with DIAILD may have had a previous episode of hepa-totoxicity.Further collaborative studies in DIAILD will strengthen the knowledge and understanding of this intriguing and complex disorder which might represent different phenotypes across the spectrum ofAgustin Castiella Eva Zapata M Isabel Lucena Raúl J Andrade 2014World Journal of Hepatology2014,6,4:13
14突发性聋显示文摘突发性聋的病因包括:病毒感染、自身免疫性疾患、血管受损及膜迷路破裂等。关于突发性聋近来的文献提示,对病毒及自身免疫因素的科学依据日渐增多。近来的治疗方案有:吸入卡波金(Carbogen含有5%二氧化碳的氧气—译者注)和类固醇治疗。中度听力下降的患者,口服类固醇也有效。Cole RR Jahrsdoerfer RA 曾咏梅 梁莺 1990国外医学(耳鼻咽喉科学分册)1990,14,3:12
15Analysis of intrahepatic sarcomatoid cholangiocarcinoma:Experience from 11 cases within 17 years显示文摘BACKGROUND Intrahepatic sarcomatoid chonalgiocarcinoma(s-CCC) is an extremely rare disease, accounting for less than 1% of hepatobiliary system malignancies, and its pathophysiology is not well known. On the hypothesis that its clinical, serologic,or radiologic diagnosis are not fully understood and its prognosis is poor, we investigated the distinguishing features of s-CCC compared with those of intrahepatic bile duct adenocarcinoma [cholangiocellular carcinoma(CCC)] in patients from a single center.AIM To analyze the clinical, serologic, imaging, and histopathologic characteristics of intrahepatic s-CCC patients diagnosed in a single center.METHODS The clinical, serologic, imaging, and histopathologic features of 227 patients diagnosed with intrahepatic cholangiocarcinoma(IHCC) in a single medical center during the last 17 years were analyzed. The characteristics of 11 patients with s-CCC were compared with those of 216 patients with CCC.RESULTS The number of patients with s-CCC who presented fever and abdominal pain and past history of chronic viral hepatitis or liver cirrhosis(LC) was higher than that of patients with CCC. In imaging studies, patients with s-CCC showed relatively aggressive features. However, no clear distinction was observed between s-CCC and CCC based on other clinical, serologic or radiologic examination results. An accurate diagnosis could be made only via a histopathologic examination through immunohistochemical staining. The clinical course of s-CCC was generally aggressive, and patients had a relatively poor prognosis.CONCLUSION In patients with s-CCC, early diagnosis through biopsy and aggressive treatment,including surgical resection, are important.Dong Kyun Kim Bo Ra Kim Jin Sook Jeong Yang Hyun Baek 2019World Journal of Gastroenterology2019,25,5:11
16Influence of flooding and vegetation on carbon,nitrogen,and phosphorus dynamics in the pore water of a Spartina alterniflora salt marsh显示文摘Four sites were selected in a salt marsh in the Bah' a Blanca Estuary (Argentina):(1) low marsh (flooded by the tide twice daily) vegetated by S.alterniflora;(2) non-vegetated low marsh;(3) high marsh (flooded only in spring tides) vegetated by S.alterniflora;(4) non-vegetated high marsh.The pH and Eh were measured in sediments,while dissolved nutrients (ammonium,nitrate,nitrite and phosphate) and particulate organic matter (POM) were determined in pore water.pH (6.2-8.7) was only affected by vegetation in low areas.Eh (from-300 to 250 mV) was lower at low sites than at high ones;in the latter,the values were higher in the non-vegetated sediments.The POM concentration was greater in the high marsh than in the low marsh,with no effect of vegetation.Ammonium was the most abundant nitrogen nutrient species in pore water,except in the non-vegetated high marsh where nitrate concentration was higher.All nitrogen nutrients were affected by both flooding and vegetation.Phosphate was always present in pore water at all sites throughout the year and its concentration varied within narrow limits,with no effect of flooding and greater values always at non-vegetated sites.Our results showed that the variability of the pore water composition within the marsh is greater than the temporal variation,meaning that both tidal flooding and vegetation are important in the dynamics of nutrients and organic matter in the sediment pore water.Vanesa L.Negrin Carla V.Spetter Raúl O.Asteasuain Gerardo M.E.Perillo Jorge E.Marcovecchio 2011Journal of Environmental Sciences2011,23,2:11
17Role of mi RNAs and their potential to be useful as diagnostic and prognostic biomarkers in gastric cancer显示文摘Alterations in epigenetic control of gene expression play an important role in many diseases, including gastric cancer. Many studies have identified a large number of upregulated oncogenic mi RNAs and downregulated tumour-suppressor mi RNAs in this type of cancer. In this review, we provide an overview of the role of mi RNAs, pointing to their potential to be useful as diagnostic and/or prognostic biomarkers in gastric cancer. Moreover, we discuss the influence of polymorphisms and epigenetic modifications on mi RNA activity.Kelly Cristina da Silva Oliveira Taíssa Maíra Thomaz Araújo Camila Inagaki Albuquerque Gabriela Alcantara Barata Carolina Oliveira Gigek Mariana Ferreira Leal Fernanda Wisnieski Fernando Augusto Rodrigues Mello Junior André Salim Khayat Paulo Pimentel de Assumpcao Rommel Mário Rodriguez Burbano Marília Cardoso Smith Danielle Queiroz Calcagno 2016World Journal of Gastroenterology2016,22,35:11
18mi R-122 negatively correlates with liver fibrosis as detected by histology and FibroScan显示文摘AIM: To investigate whether expression of selected mi RNAs obtained from fibrotic liver biopsies correlate with fibrosis stage.METHODS: Altogether, 52 patients were enrolled in the study representing various etiologic backgrounds of fibrosis: 24 cases with chronic hepatitis infections(types B, C), 19 with autoimmune liver diseases(autoimmune hepatitis, primary biliary cirrhosis, primary sclerosing cholangitis, overlapping syndrome cases), and 9 of mixed etiology(alcoholic and nonalcoholic steatosis, cryptogenic cases). Severity of fibrosis was determined by both histologic staging using the METAVIR scoring system and noninvasive transient elastography. Following RNAisolation, expression levels of mi R-21, mi R-122, mi R-214, mi R-221, mi R-222, and mi R-224 were determined using Taq Man Micro RNA Assays applying mi R-140 as the reference. Selection of mi RNAs was based on their characteristic up- or downregulation observed in hepatocellular carcinoma. Relative expression of mi RNAs was correlated with fibrosis stage and liver stiffness(LS) value measured by transient elastography, as well as with serum alanine aminotransferase(ALT) level.RESULTS: The expression of individual mi RNAs showed deregulated patterns in stages F1-F4 as compared with stage F0, but only the reduced level of mi R-122 in stage F4 was statistically significant(P < 0.04). When analyzing mi RNA expression in relation to fibrosis, levels of mi R-122 and mi R-221 showed negative correlations with fibrosis stage, and mi R-122 was found to correlate negatively and mi R-224 positively with LS values(all P < 0.05). ALT levels displayed a positive correlation with mi R-21(P < 0.04). Negative correlations were observed in the fibrosis samples of mixed etiology between mi R-122 and fibrosis stage and LS values(P < 0.05), and in the samples of chronic viral hepatitis, between mi R-221 and fibrosis stage(P < 0.01), whereas mi R-21 showed positive correlation with ALT values in the samples of autoimmune liver diseases(P < 0.03). The results also revealed a strong correlation between fibrosis stage and LS values(P < 0.01) when etiology of fibrosis was not taken into account.CONCLUSION: Reduced expression of mi R-122 in advanced fibrosis and its correlation with fibrosis stage and LS values seem to be characteristic of hepatic fibrosis of various etiologies.Tünde Halász Gábor Horváth Gabriella Pár Klára Werling András Kiss Zsuzsa Schaff Gábor Lendvai 2015World Journal of Gastroenterology2015,21,25:11
19烧伤内毒素血症显示文摘1985年7月~1987年11月,对收治于美国约翰·霍普金斯大学巴尔的摩烧伤中心的68例烧伤病人,采用基质显色法鲎试验进行了407次血浆内毒素的定量检测,经多次验证,该试剂稳定可靠,但也发现两个问题:(1)目前广泛用加热+稀释的方法企图移除血浆中干扰内毒素检出的因素(我们用70℃,10min)尚无法全部移除该干扰因素。通过对204个血浆标本(包括部分正常对照的人血浆)加入已知量标准内毒素的检测,平均检出率只达54.2%。在未能全部解决这一难题前,应对各个样品另加已知量的内毒素求其检出率,再行换算,才能获得血浆内真正的内毒素值。(2)肝素可明显抑制内毒素的检出,采全血5ml,抗凝用的肝素应不超过20U,否则,内毒素检出值将相应下降。对一组39例不同烧伤面积的病人,在伤后5天内连续进行血浆内毒素的检测,血循环中总内毒素的平均量与烧伤面积相关,伤后3~4天有一峰值。另对29例烧伤面积20~75%病人,进行伤后两周内定期抽血检查、内毒素阳性者17例(占58.6%)。提示烧伤后内毒素血症比较常见。本组内毒素血症与革兰氏阴性杆菌菌血症或创面脓毒症的相关率为71%。其他来源,尚待探索。肖光夏 Winchurch RA Thupari UN Munster AM 1989解放军医学杂志1989,14,2:10
20Relationship between diabetes and periodontal infection显示文摘Periodontal disease is a high prevalent disease.In the United States 47.2% of adults ≥ 30 years old have been diagnosed with some type of periodontitis.Longitudinal studies have demonstrated a two-way relationship between diabetes and periodontitis,with more severe periodontal tissue destruction in diabetic patients and poorer glycemic control in diabetic subjects with periodontal disease.Periodontal treatment can be successful in diabetic patients.Short term effects of periodontal treatment are similar in diabetic patients and healthy population but,more recurrence of periodontal disease can be expected in no well controlled diabetic individuals.However,effects of periodontitis and its treatment on diabetes metabolic control are not clearly defined and results of the studies remain controversial.Fernando Llambés Santiago Arias-Herrera Raúl Caffesse 2015World Journal of Diabetes2015,6,7:9
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