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Toward Best Practice in Using Molecular Diagnosis to Guide Medical Management, Are We There Yet? 用分子诊断指导医疗管理的最佳实践,我们到了吗?
Anne Chun-Hui Tsai, Xuezhong Liu

Molecular genetics testing has made several huge breakthroughs in the past two decades and many molecular technologies have been applied to our daily medical progress. However, the clinical utility has not reach a consensus by the medical and genetic peers as well as third party payers. The predictive value and clinical applications are variable from one condition to the other. Numerous questions remain including technology deficits, data interpretation and unpredicted phenotypes in complex disorders. In this commentary, the authors reviewed the historical perspective of genetic testing and summarized the current technical deficit, clinical dilemma and suggested a few critical threshold to overcome before the implementation of useful genetic information in standard health care can become a reality.

在过去的二十年里,分子遗传学测试取得了几项巨大的突破,许多分子技术已经应用于我们日常的医学进步中。然而,临床效用尚未达成共识,医学界和遗传学同行以及第三方支付者。预测价值和临床应用在不同的情况下是可变的。许多问题仍然存在,包括技术缺陷,数据解释和复杂疾病中不可预测的表型。在这篇评论中,作者回顾了基因检测的历史观点,总结了当前的技术缺陷、临床困境,并提出了在标准医疗保健中实施有用的遗传信息之前需要克服的几个关键门槛。
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引用次数: 0
Hepatitis C Virus Mediated Hepatocellular Carcinoma: A Focused Review for a Time of Changing Therapeutic Options 丙型肝炎病毒介导的肝细胞癌:改变治疗选择的重点回顾
Pub Date : 2014-07-31 DOI: 10.7156/NAJMS.2014.0701008
Jesse M Civan, H. Hann
Hepatocellular carcinoma (HCC) is a major cause of morbidity and mortality, accounting for approximately 600,000 deaths annually world-wide and 10,000 deaths annually in the United States.  Chronic infection with the hepatitis C virus (HCV) is the leading risk factor for HCC in the United States, and the second leading risk factor for HCC world-wide.  The addition to the anti-HCV treatment armamentarium of boceprevir and telaprevir in 2011, and of simeprevir and sofosbuvir in 2013, mark a transition to a new era.  In this new era, treatment for HCV is becoming so highly effective and tolerable that for the first time eradication of chronic HCV on a population level is realistically foreseeable.  A major reduction in the burden of chronic HCV is likely to translate into a substantial reduction in the incidence of HCC.  Here, we review the epidemiology, pathogenesis, and treatment of HCC with a special focus on hepatocarcinogenesis associated with chronic HCV infection.
肝细胞癌(HCC)是发病率和死亡率的主要原因,全世界每年约有60万人死亡,美国每年有1万人死亡。慢性丙型肝炎病毒(HCV)感染是美国HCC的主要危险因素,也是全球HCC的第二大危险因素。2011年boceprevir和telaprevir以及2013年simeprevir和sofosbuvir加入抗hcv治疗方案,标志着一个新时代的过渡。在这个新时代,丙型肝炎病毒的治疗变得非常有效和可耐受,这是第一次在人群水平上根除慢性丙型肝炎病毒是现实可预见的。慢性丙型肝炎病毒负担的大幅减少可能转化为HCC发病率的大幅降低。在这里,我们回顾了HCC的流行病学、发病机制和治疗,并特别关注与慢性HCV感染相关的肝癌发生。
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引用次数: 6
Folate Receptor Alpha Autoantibodies Modulate Thyroid Function in Autism Spectrum Disorder 叶酸受体α自身抗体调节自闭症谱系障碍患者的甲状腺功能
Pub Date : 2014-07-31 DOI: 10.7156/NAJMS.2014.0702053
R. Frye, J. M. Sequeira, E. Quadros, D. Rossignol
The folate receptor alpha (FRα) is essential for folate transportation across the blood-brain barrier and is closely associated with cerebral folate deficiency, a syndrome that commonly presents with autism spectrum disorder (ASD) features. FRα autoantibodies (FRAAs) interrupt FRα function and have a high prevalence in children with ASD. Since the FRα is also located on the thyroid, FRAAs could also interfere with thyroid function. Interestingly, ASD has been inconsistently associated with hypothyroidism. The aim of this study was to determine if thyroid dysfunction in ASD could be related to FRAAs. To this end we investigated the relationship between serum FRAA titers (both blocking and binding) and thyroid stimulating hormone (TSH) in 32 children with ASD. Blocking, but not binding, FRAAs were found to be related to TSH levels. Higher FRAAs were significantly correlated with higher TSH concentrations (r = 0.36, p = 0.025), while ASD children who were positive for blocking FRAAs demonstrated a significantly higher serum concentration of TSH than children who were negative for FRAAs (t(31) = 2.07, p = 0.02). These results are consistent with the notion that blocking FRAAs are associated with reduced thyroid function and suggest that thyroid function should be examined in children with ASD who are positive for the blocking FRAAs.
叶酸受体α (FRα)对叶酸通过血脑屏障的运输至关重要,并且与脑叶酸缺乏密切相关,这是一种通常表现为自闭症谱系障碍(ASD)特征的综合征。FRα自身抗体(FRAAs)阻断FRα功能,在ASD儿童中具有很高的患病率。由于fra α也位于甲状腺上,因此fra也可能干扰甲状腺功能。有趣的是,ASD与甲状腺功能减退的关系并不一致。本研究的目的是确定ASD患者的甲状腺功能障碍是否与fraa有关。为此,我们研究了32例ASD患儿血清FRAA滴度(阻断和结合)与促甲状腺激素(TSH)的关系。阻断而非结合,发现fraa与TSH水平有关。较高的FRAAs与较高的TSH浓度显著相关(r = 0.36, p = 0.025),而阻断FRAAs阳性的ASD儿童血清TSH浓度显著高于FRAAs阴性的儿童(t(31) = 2.07, p = 0.02)。这些结果与阻断性fraa与甲状腺功能下降相关的观点一致,并建议对阻断性fraa阳性的ASD儿童进行甲状腺功能检查。
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引用次数: 8
Eosinophilic Esophagitis Presenting as Complete Esophageal Desquamation: An Unusual Case of Chest Pain 嗜酸性粒细胞性食管炎表现为完全性食管脱屑:一例罕见的胸痛病例
Pub Date : 2014-07-31 DOI: 10.7156/NAJMS.2014.0702081
Kheng-Jim Lim, Lanjing Zhang, Anish Sheth
The diagnosis of eosinophilic esophagitis has been steadily increasing with the increase usage of endoscopy as a diagnostic tool.  Here we present a case of complete esophageal desquamation visualized on endoscopy without any evidence of caustic ingestion or any other potential disease process that would cause a similar presentation.  The diagnosis of eosinophilic esophagitis was established by significantly increased intraepithelial eosinophils, eosinphilic micro-abscess and partially detached squamous epithelium on the esophageal biopsy. There was complete resolution of symptoms with standard therapy for eosinophilic esophagitis. To the best our knowledge, this is the first reported case in the English literature of eosinophilic esophagitis that presents as complete esophageal desquamation.
嗜酸性粒细胞性食管炎的诊断随着内窥镜作为诊断工具的使用的增加而稳步增加。在此,我们报告一个内镜下完全食管脱屑的病例,没有任何证据表明腐蚀性摄入或任何其他潜在的疾病过程会导致类似的表现。食管活检显示上皮内嗜酸性粒细胞明显增加、嗜酸性微脓肿和部分脱落的鳞状上皮,诊断为嗜酸性粒细胞性食管炎。嗜酸性粒细胞性食管炎的标准治疗可完全缓解症状。据我们所知,这是英语文献中第一例以完全食管脱屑为表现的嗜酸性粒细胞性食管炎。
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引用次数: 0
Study of the Application of Clinical Pathways in Varicella, Acute Bacillary Dysentery, Measles, Scarlet Fever, and Rubella 临床路径在水痘、急性细菌性痢疾、麻疹、猩红热、风疹中的应用研究
Pub Date : 2014-07-31 DOI: 10.7156/NAJMS.2014.0702063
Zhe Xu, E. Qin, Min Zhao, Weimin Nie, Zhi-ping Zhou, B. Tu, Weiwei Chen, B. Wu, Fei Wang, Jin Li
In order to explore the clinical pathways that fit the actual situation of our country and department of infectious diseases, an analysis was performed to evaluate the effectiveness of clinical pathways for varicella, acute bacillary dysentery, measles, scarlet fever and rubella when compared with traditional standard medical care. Using a retrospective comparative study design, varicella, acute bacillary dysentery, measles, scarlet fever and rubella patients who were managed on a clinical pathway (clinical pathway group) were compared with a retrospective group of patients who received traditional medical care (control group) prior to the pathway's implementation. The following outcomes were measured: length of hospital stay, hospitalization costs. There was a significant reduction in the median hospitalization costs in the clinical pathway group patients in all five infectious diseases (P<0.05). The clinical pathway group's length of hospital stay for varicella, measles, acute bacillary dysentery and rubella were significantly shorter than the control group (P<0.05). The implementation of clinical pathways in varicella, acute bacillary dysentery, measles, scarlet fever and rubella might contribute to better quality of care and cost-effectiveness.
为探索适合我国和传染病科实际情况的临床路径,对水痘、急性细菌性痢疾、麻疹、猩红热、风疹等临床路径与传统标准医疗服务的效果进行分析评价。采用回顾性比较研究设计,将采用临床路径管理的水痘、急性细菌性痢疾、麻疹、猩红热和风疹患者(临床路径组)与在该路径实施前接受传统医疗护理的患者(对照组)进行回顾性比较。测量了以下结果:住院时间、住院费用。五种感染性疾病临床路径组患者住院费用中位数均显著降低(P<0.05)。临床路径组水痘、麻疹、急性细菌性痢疾、风疹住院时间均显著短于对照组(P<0.05)。在水痘、急性细菌性痢疾、麻疹、猩红热和风疹方面实施临床路径可能有助于提高护理质量和成本效益。
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引用次数: 0
A Review of the Natural History of Chronic Hepatitis C Infection 慢性丙型肝炎感染的自然史综述
Pub Date : 2014-07-31 DOI: 10.7156/NAJMS.2014.0701001
Julius M. Wilder, K. Patel
The burden of chronic hepatitis C infection worldwide is significant. Approximately 4.1 million people in the United States have anti-HCV antibodies. The prevalence worldwide varies, but reaches greater than 3.5% in some regions (North African, East Asia). The burden of hepatitis C virus is reflected in the morbidity and mortality of this disease, as well as the societal costs. The morbidity and mortality associated with chronic hepatitis c infection is mostly related to the rate of fibrosis and associated progression to cirrhosis. The natural history of this progression is a complex and dynamic process related to individual characteristics (age, sex, race, genetics), viral characteristics (genotype), behavioral (smoking, alcohol), metabolic factors (insulin resistance, obesity), and co-infection (Hepatitis B and HIV).  This review describes the current literature on how these factors interact with chronic hepatitis C infection and impact the natural history of this disease and progression to fibrosis and cirrhosis.
世界范围内慢性丙型肝炎感染的负担是巨大的。在美国大约有410万人有抗hcv抗体。世界各地的患病率各不相同,但在某些地区(北非、东亚)可达3.5%以上。丙型肝炎病毒的负担反映在该病的发病率和死亡率以及社会成本上。慢性丙型肝炎感染的发病率和死亡率主要与纤维化率和相关的肝硬化进展有关。这一进展的自然历史是一个复杂的动态过程,与个体特征(年龄、性别、种族、遗传)、病毒特征(基因型)、行为(吸烟、饮酒)、代谢因素(胰岛素抵抗、肥胖)和合并感染(乙型肝炎和艾滋病毒)有关。本文综述了目前关于这些因素如何与慢性丙型肝炎感染相互作用、影响该疾病的自然史以及向纤维化和肝硬化发展的文献。
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引用次数: 6
Anti-HBV Activities of Xanthones From Swertia Punicea Hemsl 獐牙菜口山酮抗hbv活性研究
Pub Date : 2014-07-31 DOI: 10.7156/NAJMS.2014.0702072
Xiu-qiao Zhang, Jiachun Chen, Feng-jiao Huang, L. Tian, Y. Tu
We studied the effects of two xanthones compounds isolated from Swertia punicea Hemsl (from Geutianaceae), swertianolin (I) and bellidifolin (II), on Hepatitis B surface antigen (HBsAg) and e antigen (HBeAg) in cultured human hepatocellular carcinoma cell line (HepG 2 ). The HepG 2 cells were first cultured for 24h, various concentrations of these two xanthones were then added to the culture medium. The culture medium containing the two xanthones was exchanged once every 4 days. After 8 days, the cytotoxic activities of these two xanthones were assessed by cytopathic effect. The HepG 2 cells were then treated with the two compounds at a concentration of swertianolin (1.6, 3.1, 6.2, 12.5, 25 m g/ml) and bellidifolin (2.0, 3.9, 7.8, 25.5, 31.2 m g/ml). Four or eight days later, the culture medium was collected and the expression of HBsAg and HBeAg were determined by radioimmunoassay. Our results show that swertianolin can suppress the expression of HBeAg with IC 50 of 8.0 m g/ml, while bellidifolin can inhibit the expression of HBsAg with IC 50 of 13 m g/ml at the eighth days. The Therapeutic Index for swertianolin and bellidifolin are 6.2 and 6.8, respectively. Our findings suggest that swertianolin and bellidifolin have anti-HBV activities in vitro.
研究了从獐牙菜属植物獐牙菜中分离的两种口山酮化合物獐牙菜苷(I)和獐牙菜苷(II)对培养的人肝癌细胞株(HepG 2)乙型肝炎表面抗原(HBsAg)和e抗原(HBeAg)的影响。先将HepG 2细胞培养24h,然后在培养基中加入不同浓度的这两种口山酮。含两种山酮的培养基每4天更换一次。8 d后,用细胞病变效应评价两种克山酮的细胞毒活性。然后用这两种化合物分别以swertianolin(1.6、3.1、6.2、12.5、25 m g/ml)和bellidifolin(2.0、3.9、7.8、25.5、31.2 m g/ml)的浓度处理HepG 2细胞。4、8 d后,收集培养基,用放射免疫法检测HBsAg和HBeAg的表达。结果表明,在第8天,獐牙菜苷可以抑制HBeAg的表达,ic50为8.0 m g/ml,而贝利地福林可以抑制HBsAg的表达,ic50为13 m g/ml。獐牙菜苷和贝利地福林的治疗指数分别为6.2和6.8。我们的研究结果表明,獐牙菜苷和贝利地福林具有体外抗hbv活性。
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引用次数: 3
Validity of Fine Needle Aspiration Cytology in Diagnosis of Prostatic Lesions and Correlation with Trucut Biopsy 细针穿刺细胞学诊断前列腺病变的有效性及其与前列腺活检的相关性
Pub Date : 2014-07-31 DOI: 10.7156/NAJMS.2014.0702075
J. J. Thangaiah, K. Balachandran, U. Poothiode, S. Bhat
Prostate fine needle aspiration (FNA) is an easy-to-perform outpatient procedure requiring no expensive equipment or anesthesia. The aim of this study was to analyze the cytomorphology of prostatic lesions and to correlate the findings in cytology with that of the histopathological appearance. In doing so we also assessed the diagnostic accuracy of fine needle aspiration cytology and identified possible pitfalls. The study was carried out in 100 patients who underwent tru-cut biopsy in the department of Urology at Kottayam Medical College, India during the period spanning from March 2010 to March 2011. Fine needle aspiration cytology (FNAC) was done with Franzen needle and followed by tru-cut biopsy after which the results of both were compared. FNAC gave a benign diagnosis in 64 cases and identified a malignant pattern in 36 cases. The overall accuracy of FNAC in this series in diagnosing prostatic lesions was 97% with a sensitivity of 100% and specificity of 95.5%. This shows that FNAC prostate is a reliable, relatively painless tool, which can be used for the diagnosis of prostatic carcinoma, especially in patients with high risk complications such as bleeding and infections in whom a tru-cut biopsy is more invasive. In addition it is also cost-effective and may sample a larger area.
前列腺细针抽吸(FNA)是一种易于执行的门诊手术,不需要昂贵的设备或麻醉。本研究的目的是分析前列腺病变的细胞形态学,并将细胞学结果与组织病理学表现联系起来。在此过程中,我们还评估了细针穿刺细胞学的诊断准确性,并确定了可能的缺陷。该研究在2010年3月至2011年3月期间在印度Kottayam医学院泌尿科进行了100例真切活检患者的研究。细针吸细胞学(FNAC)采用Franzen针进行,然后进行真切活检,比较两者的结果。FNAC诊断为良性64例,恶性36例。FNAC诊断前列腺病变的总体准确率为97%,敏感性为100%,特异性为95.5%。这表明FNAC前列腺是一种可靠的、相对无痛的工具,可用于前列腺癌的诊断,特别是对于有出血和感染等高风险并发症的患者,真切活检更具侵入性。此外,它也具有成本效益,可以取样更大的区域。
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引用次数: 3
Management of HCV Treatment-related Side-effects, Toxicity, and Drug-interactions HCV治疗相关副作用、毒性和药物相互作用的管理
Pub Date : 2014-07-31 DOI: 10.7156/NAJMS.2014.0701033
PharmD Jenna K. Kawamoto, P. Smith, Agaf Steven-Huy B. Han
Direct-acting antiviral (DAA) protease inhibitors, boceprevir (BOC) and telaprevir (TVR) were FDA-approved in 2011 to be used in combination with pegylated interferon (peg-IFN) and ribavirin for the treatment of chronic hepatitis C virus infection (HCV) genotype 1. The addition of these new DAAs increased cure rates but also increased rates of adverse events and drug interactions. This review will evaluate HCV treatment-related side-effects, toxicity, and drug-interactions and management. Understanding and identifying adverse events and drug interactions will help enable the provider to minimize treatment discontinuation, prevent serious adverse events, and optimize treatment for patients.
直接作用抗病毒(DAA)蛋白酶抑制剂boceprevir (BOC)和telaprevir (TVR)于2011年被fda批准与聚乙二醇化干扰素(peg-IFN)和利巴韦林联合使用,用于治疗基因型1型慢性丙型肝炎病毒感染(HCV)。这些新的daa的添加增加了治愈率,但也增加了不良事件和药物相互作用的发生率。本综述将评估HCV治疗相关的副作用、毒性、药物相互作用和管理。了解和识别不良事件和药物相互作用将有助于使提供者最大限度地减少治疗中断,防止严重的不良事件,并优化对患者的治疗。
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引用次数: 0
Clinical Evaluation of Chronic Hepatitis C and Indications for HCV Treatment 慢性丙型肝炎的临床评价及治疗适应症
Pub Date : 2014-07-31 DOI: 10.7156/NAJMS.2014.0701017
V. Sundaram, T. Tran
Hepatitis C virus (HCV) is the most common cause of liver cirrhosis in the United States. If untreated, HCV can lead to death from complications of liver failure or hepatocellular carcinoma, making screening imperative in high-risk patients. Established risk factors for HCV infection include injection drug use, receipt of blood transfusion or organ transplantation prior to 1992, and hemodialysis. Recent evidence has demonstrated that those born between 1945-1965 are additionally at high risk for HCV acquisition and should undergo one time screening. Once diagnosed, consideration for treatment should be based on patient motivation, concurrent medical co-morbidities, degree of liver injury, and risk of progression to cirrhosis. Therapy may also be indicated in patients with extra-hepatic manifestations of HCV.
在美国,丙型肝炎病毒(HCV)是导致肝硬化的最常见原因。如果不治疗,丙型肝炎可导致肝功能衰竭或肝细胞癌并发症死亡,因此对高危患者进行筛查势在必行。丙型肝炎病毒感染的已知危险因素包括注射吸毒、1992年以前接受输血或器官移植以及血液透析。最近的证据表明,1945-1965年之间出生的人感染丙型肝炎病毒的风险较高,应进行一次性筛查。一旦确诊,治疗的考虑应基于患者的动机、并发的医疗合并症、肝损伤程度和进展为肝硬化的风险。治疗也适用于肝外表现的HCV患者。
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引用次数: 1
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North American journal of medicine & science
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