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https://www.readbyqxmd.com/read/28434129/phage-displayed-peptides-that-mimic-epitopes-of-hepatitis-e-virus-capsid
#1
Osmany Larralde, Juraj Petrik
Hepatitis E is an emerging zoonotic infection of increasing public health threat for the UK, especially for immunosuppressed individuals. A human recombinant vaccine has been licensed only in China and is not clear whether it protects against hepatitis E virus (HEV) genotype 3, the most prevalent in Europe. The aim of this study was to use phage display technology as a tool to identify peptides that mimic epitopes of HEV capsid (mimotopes). We identified putative linear and conformational mimotopes using sera from Scottish blood donors that have the immunological imprint of past HEV infection...
April 22, 2017: Medical Microbiology and Immunology
https://www.readbyqxmd.com/read/28434002/in-situ-hearing-tests-for-the-purpose-of-a-self-fit-hearing-aid
#2
Monique Boymans, Wouter A Dreschler
This study investigated the potential and limitations of a self-fit hearing aid. This can be used in the "developing" world or in countries with large distances between the hearing-impaired subjects and the professional. It contains an on-board tone generator for in situ user-controlled, automated audiometry, and other tests for hearing aid fitting. Twenty subjects with mild hearing losses were involved. In situ audiometry showed a test-retest reliability (SD <3.7 dB) that compared well with the precision of diagnostic audiometry using headphones...
April 22, 2017: Audiology & Neuro-otology
https://www.readbyqxmd.com/read/28433839/the-diagnostic-accuracy-of-evoked-potential-monitoring-techniques-during-intracranial-aneurysm-surgery-for-predicting-postoperative-ischaemic-damage-a-systematic-review-and-meta-analysis
#3
REVIEW
Benjamin Thomas, Dongsheng Guo
OBJECTIVE: To investigate the diagnostic accuracy of various evoked potential monitoring techniques in predicting postoperative neurological deficit in intracranial aneurysm surgery. METHODS: A literature search of the MEDLINE, Embase and Cochrane databases was conducted for English language papers published between 31 March 1983 and 31 March 2016. Original studies that reported the use of evoked potential monitoring during intracranial aneurysm surgery in predicting postoperative neurological damage were selected, and their relevant reference lists were hand searched...
April 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28433611/preanalytical-variables-for-liquid-chromatography-mass-spectrometry-lc-ms-analysis-of-human-blood-specimens
#4
REVIEW
Gian Luca Salvagno, Elisa Danese, Giuseppe Lippi
The use of liquid chromatography-mass spectrometry (LC-MS) for both diagnostics and research purposes is rapidly growing in clinical laboratories. As for more conventional areas of in vitro diagnostic testing, many preanalytical variables have an impact on these techniques and may hence jeopardize the quality of tests results. The leading preanalytical variables include patient preparation, the nature of the blood collection tubes and additives, interference from spurious hemolysis, sample handling and management, composition of blood tubes, contamination, as well as storage conditions...
April 19, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28433586/a-comparison-of-hepatic-steatosis-index-controlled-attenuation-parameter-and-ultrasound-as-noninvasive-diagnostic-tools-for-steatosis-in-chronic-hepatitis-b
#5
Liang Xu, Wei Lu, Ping Li, Feng Shen, Yu-Qiang Mi, Jian-Gao Fan
AIMS: To evaluate the value of noninvasive tools for diagnosis of hepatic steatosis in patients with chronic hepatitis B (CHB). METHODS: Consecutive treatment-naïve patients with CHB with body mass index less than 30kg/m(2) who underwent liver biopsy, ultrasound and FibroScan(®) were enrolled. The diagnostic performance of controlled attenuation parameter (CAP), hepatic steatosis index (HSI) and ultrasound for hepatic steatosis compared with liver biopsy was assessed...
March 30, 2017: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28433252/nrasq61r-immunohistochemistry-detects-both-nrasq61r-and-krasq61r-mutations-in-colorectal-cancer
#6
Jie-Yang Jhuang, Chang-Tsu Yuan, Yu-Lin Lin, Mei-Ling Cheng, Jau-Yu Liau, Jia-Huei Tsai
The NRASQ61R monoclonal antibody (clone sp174) is a mutation-specific antibody that is increasingly being used to detect the NRAS(Q61R) mutation in melanomas. This antibody has been reported to be highly correlated with the NRAS(Q61R) mutation status in melanomas and follicular neoplasms of the thyroid gland. However, its utility in colorectal carcinoma (CRC) has remained largely unknown. In this study, we assessed the sensitivity, specificity, and diagnostic utility of NRASQ61R immunohistochemistry in a cohort consisting of tissue sections of 113 CRCs, which were molecularly profiled for the KRAS, NRAS, and BRAF mutations...
April 19, 2017: Pathology
https://www.readbyqxmd.com/read/28433102/the-genetics-of-wilson-disease
#7
Irene J Chang, Si Houn Hahn
Wilson disease (WD) is an autosomal-recessive disorder of hepatocellular copper deposition caused by pathogenic variants in the copper-transporting gene, ATP7B. Early detection and treatment are critical to prevent lifelong neuropsychiatric, hepatic, and systemic disabilities. Due to the marked heterogeneity in age of onset and clinical presentation, the diagnosis of Wilson disease remains challenging to physicians today. Direct sequencing of the ATP7B gene is the most sensitive and widely used confirmatory testing method, and concurrent biochemical testing improves diagnostic accuracy...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28433100/diagnosis-of-wilson-disease
#8
Peter Ferenci
Clinical presentation of Wilson disease can vary widely; therefore diagnosis is not always straightforward. Wilson disease is not just a disease of children and young adults, but may present at any age. The key features of Wilson disease are liver disease and cirrhosis, neuropsychiatric disturbances, Kayser-Fleischer rings, and acute episodes of hemolysis, often in association with acute liver failure. Diagnosis is particularly difficult in children and in adults presenting with active liver disease. None of the available laboratory tests is perfect and may not be specific for Wilson disease...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28433095/history-of-wilson-disease-a-personal-account
#9
John M Walshe
This chapter focuses on the historic aspects of the development of much of our current knowledge of the diagnosis and treatment of Wilson disease. Included are descriptions of the clinical signs of neurologic and hepatic disease, the natural history of disease progression, studies of disease pathogenesis and a unique perspective on the development of diagnostic testing and pharmacological therapy.
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28433079/utilization-of-whole-exome-next-generation-sequencing-variant-read-frequency-for-detection-of-lesion-specific-somatic-loss-of-heterozygosity-in-a-neurofibromatosis-type-1-cohort-with-tibial-pseudarthrosis
#10
Rebecca L Margraf, Chad VanSant-Webb, David Sant, John Carey, Heather Hanson, Jacques D'Astous, Dave Viskochil, David A Stevenson, Rong Mao
A subset of neurofibromatosis type 1 patients develop tibial dysplasia, which can lead to pseudarthrosis. The tissue from the tibial pseudarthrosis region commonly has a somatic second hit in NF1: single-nucleotide variants, small deletions, or loss of heterozygosity (LOH). We used exome next-generation sequencing (NGS) variant frequency data (allelic imbalance analysis) to detect somatic LOH in pseudarthrosis tissue from three individuals with clinically and diagnostically confirmed neurofibromatosis type 1, and verified the results with microarray...
May 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/28432940/a-sandwich-immunoassay-for-brucellosis-diagnosis-based-on-immune-magnetic-beads-and-quantum-dots
#11
Li Li, Dehui Yin, Kun Xu, Yushen Liu, Dandan Song, Juan Wang, Chao Zhao, Xiuling Song, Juan Li
Brucellosis is a serious zoonosis with a rapid increase in incidence across epidemic regions. Currently, there are numerous methods for diagnosing brucellosis. However, these studies often have a few defects, such as low sensitivity, poor specificity, time consuming, laborious, and even potential biological risk. To overcome these shortcomings, we have developed a rapid, sensitive and accurate diagnosis procedure for brucellosis based on the immune magnetic beads (IMB) probe and quantum dots (QDs) - staphylococcal protein A (SPA) probe...
April 6, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28432835/detection-of-soft-tissue-abscess-comparison-of-diffusion-weighted-imaging-to-contrast-enhanced-mri
#12
Chang Woo Chun, Joon-Yong Jung, Jun Seung Baik, Won-Hee Jee, Sun Ki Kim, Seung Han Shin
PURPOSE: To compare the diagnostic performances of diffusion-weighted imaging (DWI)-combined magnetic resonance imaging (MRI) performed without intravenous contrast material with gadolinium contrast material-enhanced (CE) MRI for diagnosing soft-tissue abscesses. MATERIALS AND METHODS: In all, 119 patients (mean age: 56 years) with skin and soft-tissue infection who underwent contrast-enhanced MRI with DWI (b = 0-800) were included. Two readers independently reviewed both image sets-nonenhanced conventional MR images (NECI)+DWI, and NECI+contrast enhanced fat-suppressed T1 -weighted imaging (CEFST1 )-for the presence of abscess...
April 22, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28432683/prospective-evaluation-of-the-diagnostic-value-of-sensitive-kit-d816v-mutation-analysis-of-blood-in-adults-with-suspected-systemic-mastocytosis
#13
Thomas Kristensen, Hanne Vestergaard, Carsten Bindslev-Jensen, Charlotte Gotthard Mortz, Henrik Fomsgaard Kjaer, Markus Ollert, Michael Boe Møller, Sigurd Broesby-Olsen
BACKGROUND: Sensitive KIT D816V mutation analysis of blood has been proposed to guide bone marrow (BM) investigation in suspected systemic mastocytosis (SM). The aim of this prospective study was for the first time to compare the D816V-status of the "screening blood sample" used to guide BM biopsy in suspected SM to the outcome of the subsequent BM investigation. METHODS: 58 adult patients with suspected SM were included. The outcome of sensitive KIT D816V-analysis of blood was compared to the result of the BM investigation...
April 22, 2017: Allergy
https://www.readbyqxmd.com/read/28432477/usefulness-of-non-magnifying-narrow-band-imaging-in-evis-exera-iii-video-systems-and-high-definition-endoscopes-to-diagnose-dysplasia-in-barrett-s-esophagus-using-the-barrett-international-nbi-group-bing-classification
#14
Oscar Nogales, Arancha Caballero-Marcos, Ana Clemente-Sánchez, Javier García-Lledó, Leticia Pérez-Carazo, Beatriz Merino, Carlos Carbonell, María López-Ibáñez, Cecilia González-Asanza
BACKGROUND: Narrow band imaging (NBI) allows identification of abnormal areas of Barrett's esophagus (BE) and could facilitate targeted biopsies. AIMS: We evaluated the diagnostic accuracy for dysplasia prediction using non-magnifying NBI in Evis Exera III processors and high-definition endoscopes using the Barrett International NBI Group (BING) classification, as well as inter/intraobserver agreement for dysplasia prediction and mucosal/vascular patterns. METHODS: Eight observers (4 staff endoscopists and 4 trainee endoscopists) evaluated 100 images selected from an anonymized bank of 470 photographs using the BING classification...
April 21, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28432319/diabetic-retinopathy-and-clinical-parameters-favoring-the-presence-of-diabetic-nephropathy-could-predict-renal-outcome-in-patients-with-diabetic-kidney-disease
#15
Chi-Chih Hung, Hugo You-Hsien Lin, Daw-Yang Hwang, I-Ching Kuo, Yi-Wen Chiu, Lee-Moay Lim, Shang-Jyh Hwang, Hung-Chun Chen
Diabetes duration, diabetic retinopathy (DR), and a diagnostic model have been proposed as clinical parameters favoring the presence of diabetic nephropathy (DN) in biopsied patients with diabetic kidney disease. DN, compared with non-diabetic renal disease, had poorer renal outcomes. We tested whether these clinical parameters favoring DN are associated with poorer renal outcomes in non-biopsied patients. In this study, 1330 patients with type 2 diabetes and chronic kidney disease stages 1-4 were included and divided according to diabetes mellitus (DM) duration >8 years, DR, or a diagnostic model for DN...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28431934/etiological-analysis-and-epidemiological-comparison-among-adult-cap-and-nhcap-patients-in-okinawa-japan
#16
Gretchen Parrott, Daijiro Nebeya, Takeshi Kinjo, Kazuya Miyagi, Shusaku Haranaga, Futoshi Higa, Masao Tateyama, Jiro Fujita
BACKGROUND: Etiological epidemiology and diagnosis are important issues for CAP and NHCAP. Despite the availability of effective therapies, significant morbidity and mortality ensues. METHODS: We retrospectively analyzed the etiology of 200 pneumonia patients at the University of the Ryukyus Hospital. Patients were categorized into CAP (n = 97) or NHCAP (n = 103), according to the Japanese Respiratory Society guidelines. Diagnoses were made using clinical tests including, Gram stain, bacterial culture, serum and urinary tests...
April 18, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28431921/optimization-of-the-helmintex-method-for-schistosomiasis-diagnosis
#17
Vivian Favero, Renata Russo Frasca Candido, Carolina De Marco Verissimo, Malcolm K Jones, Timothy G St Pierre, Catieli Gobetti Lindholz, Vinicius Duval Da Silva, Alessandra Loureiro Morassutti, Carlos Graeff-Teixeira
A diagnostic test that is reliable, sensitive, and applicable in the field is extremely important in epidemiological surveys, during medical treatment for schistosomiasis, and for the control and elimination of schistosomiasis. The Helmintex (HTX) method is based on the use of magnetic beads to trap eggs in a magnetic field. This technique is highly sensitive, but the screening of fecal samples consumes lots of time, thus delaying the results, especially in field studies. The objective of this work was to determine the effects of incorporation of the detergent Tween-20 into the method in an attempt to decrease the final pellet volume produced by the HTX method as well as the use of ninhydrin to stain the Schistosoma mansoni eggs...
April 19, 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/28431860/predictive-value-of-perfusion-defects-on-dual-energy-cta-in-the-absence-of-thromboembolic-clots
#18
Richard A P Takx, Thomas Henzler, U Joseph Schoepf, Thomas Germann, Stefan O Schoenberg, Aysel Shirinova, Ralf W Bauer, Claudia Frellesen, Long Jiang Zhang, John W Nance, Christian Fink, Paul Apfaltrer
BACKGROUND: To determine the predictive value of volumetrically measured lung perfusion defects (PDvol) and right ventricular dysfunction on dual-energy computed tomography angiography (DE-CTA) for predicting all cause mortality in patients suspected of pulmonary embolism (PE) but without evident thromboembolic clot on CTA. METHODS: 448 patients underwent DE-CTA on a 64-channel DSCT system between January 2007 and December 2012 for suspected PE, of which 115 were without detectable thromboembolic clot on CTA...
April 18, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28431795/shear-wave-liver-elastography-with-a-propagation-map-diagnostic-performance-and-inter-observer-correlation-for-hepatic-fibrosis-in-chronic-hepatitis
#19
Eun Sun Lee, Jong Beum Lee, Hwi Ryong Park, Jeongin Yoo, Ji In Choi, Hyun Woong Lee, Hyung Joon Kim, Byung Ihn Choi, Hyun Jeong Park, Sung Bin Park
The aim of this study was to determine the performance of shear wave elastography (SWE) with a propagation map in the diagnosis of hepatic fibrosis, and to assess its reliability with transient elastography (TE) as the reference standard. Our prospective study included 115 consecutive patients with suspected or alleged chronic hepatitis. Patients underwent SWE by two different operators and TE by sonographers on the same day. The correlation coefficient of the intra-class correlation test between an experienced radiologist and a third-year radiology resident was 0...
April 18, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28431639/advances-in-molecular-diagnosis-of-malaria
#20
Zhi Zheng, Zhibin Cheng
Malaria is a mosquito-borne disease caused by five species of Plasmodium parasites. Accurate diagnosis of malaria plays an essential part in malaria control. With traditional diagnostic methodologies, malaria control programs have achieved remarkable success during the past decade, and are now heading toward malaria elimination in many areas. This new situation, however, calls for novel diagnostics with improved sensitivity, throughput, and reduced cost for active screening of malaria parasites, as all transfected individuals have to be identified in order to block transmission...
2017: Advances in Clinical Chemistry
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