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https://www.readbyqxmd.com/read/29454252/human-papillomavirus-detection-using-pcr-and-atr-ftir-for-cervical-cancer-screening
#1
Taciana Rymsza, Eliane Aline Ribeiro, Luis Felipe das Chagas E Silva de Carvalho, Tanmoy Bhattacharjee, Renata de Azevedo Canevari
The human papillomavirus (HPV) genital infection is considered one of the most common sexually transmitted diseases worldwide, and has been associated with cervical cancer. The objective of this study was to investigate the efficacy of the diagnostic methods: polymerase chain reaction (PCR) and Fourier transform infrared (FTIR) equipped with an ATR (Attenuated Total Reflectance) unit (Pike Tech) spectroscopy, to diagnose HPV infection in women undergoing gynecological examination. Seventeen patients (41.46%) of the 41 patients analyzed were diagnosed with exophytic/condyloma acuminate lesions by clinical analysis, 29 patients (70...
February 5, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29453935/evaluation-of-cerebrospinal-fluid-phosphorylated-tau-231-as-a-biomarker-in-the-differential-diagnosis-of-alzheimer-s-disease-and-vascular-dementia
#2
Spomenka Kiđemet-Piskač, Mirjana Babić Leko, Antonela Blažeković, Lea Langer Horvat, Nataša Klepac, Zdenko Sonicki, Danijela Kolenc, Patrick R Hof, Marina Boban, Ninoslav Mimica, Fran Borovečki, Goran Šimić
BACKGROUND: The diagnosis of either Alzheimer's disease (AD) or vascular dementia (VaD) is still largely based on clinical guidelines and exclusion of other diseases that may lead to dementia. AIMS: In this study, we assessed whether the use of sensitive and specific biomarkers such as phosphorylated tau proteins could contribute to an earlier and more accurate diagnosis of AD and VaD, as well as to their differentiation. MATERIAL AND METHODS: A total of 198 patients, of which 152 had AD, 28 VaD, and 18 were healthy controls (HC), were included in the analyses...
February 17, 2018: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/29453417/exome-sequencing-has-higher-diagnostic-yield-compared-to-simulated-disease-specific-panels-in-children-with-suspected-monogenic-disorders
#3
Oliver James Dillon, Sebastian Lunke, Zornitza Stark, Alison Yeung, Natalie Thorne, Clara Gaff, Susan M White, Tiong Yang Tan
As test costs decline, whole-exome sequencing (WES) has become increasingly used for clinical diagnosis, and now represents the primary alternative to gene panel testing for patients with a suspected genetic disorder. We sought to compare the diagnostic yield of singleton-WES with simulated application of commercial gene panels in children suspected of having a genetically heterogeneous condition. Recruitment, singleton-WES and phenotype-driven variant analysis was completed for 145 paediatric patients. At recruitment, clinicians were required to propose commercial gene panel tests as an alternative to WES and nominate a phenotype-driven candidate gene list...
February 16, 2018: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/29452617/imaging-of-spondylodiscitis
#4
REVIEW
Meera Raghavan, Elena Lazzeri, Christopher J Palestro
Spondylodiscitis is an infection of the vertebral body or disc and may also involve the epidural space, posterior elements, and paraspinal soft tissues. It is a cause of morbidity and mortality, and warrants early diagnosis and prompt treatment. Diagnosis can be difficult because of nonspecific signs and symptoms. Magnetic resonance imaging is sensitive and specific and is the imaging modality of choice for spondylodiscitis. Gadolinium contrast can show the extent of soft tissue and bone phlegmon and abscess...
March 2018: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/29452533/serum-ca125-in-combination-with-ferritin-improves-diagnostic-accuracy-for-epithelial-ovarian-cancer
#5
J Zhao, N Guo, L Zhang, L Wang
INTRODUCTION: CA125 has poor sensitivity and low specificity for detecting early ovarian cancer. Serum ferritin is elevated in many malignancies. We evaluated the performance of ferritin alone and in combination with CA125 as a diagnostic tool to detect epithelial ovarian cancer (EOC). METHODS: CA125 and ferritin were detected in the serum of 50 healthy control (HC), 50 women with benign gynaecological conditions and 124 women with EOC. The relationship between serum ferritin and CA125 and each of the clinicopathological parameters was assessed, and their diagnostic accuracy for discriminating ovarian cancer determined...
February 16, 2018: British Journal of Biomedical Science
https://www.readbyqxmd.com/read/29452336/invited-commentary-male-reproductive-system-congenital-malformations-and-the-risk-of-autism-spectrum-disorder
#6
Laura A Schieve, Stuart K Shapira
Autism spectrum disorder (ASD) is a prevalent developmental disorder. Studies indicate that while ASD etiology has a genetic component, the risk is polygenic, with gene-environment interactions being likely. The prenatal period is a critical exposure window for nongenetic risk factors. Previous studies have found positive associations between congenital malformations (all types) and ASD; a few also found specific associations between genitourinary system malformations and ASD; and one study found an association between hypospadias and ASD...
February 14, 2018: American Journal of Epidemiology
https://www.readbyqxmd.com/read/29452112/molecular-diagnosis-of-protozoan-parasites-by-recombinase-polymerase-amplification
#7
A Castellanos-Gonzalez, A C White, P Melby, B Travi
Infections caused by protozoan parasites affect millions of people around the world. Traditionally, diagnosis was made by microscopy, which is insensitive and in some cases not specific. Molecular methods are highly sensitive and specific, but equipment costs and personnel training limit its availability only to specialized centers, usually far from populations with the highest risk of infection. Inexpensive methods that can be applied at the point of care (POC), especially in places with limited health infrastructure, would be a major advantage...
February 13, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29451887/evaluating-diagnostic-indicators-of-urogenital-schistosoma-haematobium-infection-in-young-women-a-cross-sectional-study-in-rural-south-africa
#8
Hashini Nilushika Galappaththi-Arachchige, Sigve Holmen, Artemis Koukounari, Elisabeth Kleppa, Pavitra Pillay, Motshedisi Sebitloane, Patricia Ndhlovu, Lisette van Lieshout, Birgitte Jyding Vennervald, Svein Gunnar Gundersen, Myra Taylor, Eyrun Floerecke Kjetland
BACKGROUND: Urine microscopy is the standard diagnostic method for urogenital S. haematobium infection. However, this may lead to under-diagnosis of urogenital schistosomiasis, as the disease may present itself with genital symptoms in the absence of ova in the urine. Currently there is no single reliable and affordable diagnostic method to diagnose the full spectrum of urogenital S. haematobium infection. In this study we explore the classic indicators in the diagnosis of urogenital S...
2018: PloS One
https://www.readbyqxmd.com/read/29451859/harmonization-of-pcr-based-detection-of-intestinal-pathogens-experiences-from-the-dutch-external-quality-assessment-scheme-on-molecular-diagnosis-of-protozoa-in-stool-samples
#9
Theo A Schuurs, Rob Koelewijn, Eric A T Brienen, Titia Kortbeek, Theo G Mank, Bert Mulder, Foekje F Stelma, Lisette van Lieshout, Jaap J van Hellemond
BACKGROUND: Real-time PCR methods are increasingly used in routine patient care settings not only to determine the presence or absence of pathogens in patient materials, but also to obtain semiquantitative results to estimate the pathogen load. However, it is so far unknown how well these methods are harmonized among different laboratories. METHODS: Sets of stool samples were distributed three to four times per year to ca. 25-40 participating laboratories within the European Union as part of an external quality assessment scheme (EQAS) for the detection of gastrointestinal protozoa...
February 16, 2018: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/29451781/multiple-snps-detection-based-on-lateral-flow-assay-for-phenylketonuria-diagnostic
#10
Xiaonan Liu, Chao Zhang, Kewu Liu, Han Wang, Chaoxia Lu, Hang Li, Kai Hua, Juanli Zhu, Wenli Hui, Yali Cui, Xue Zhang
Single nucleotide polymorphisms (SNPs) are closely related to genetic diseases, but current SNP detection methods, such as DNA microarrays that include tedious procedures and expensive, sophisticated instruments, are unable to perform rapid SNPs detection in clinical practice, especially for those multiple SNPs related to genetic diseases. In this study, we report a sensitive, low cost, and easy-to-use point-of-care testing (POCT) system formed by combining amplification refractory mutation system (ARMS) polymerase chain reaction with gold magnetic nanoparticles (GMNPs) and lateral flow assay (LFA) noted as the ARMS-LFA system, which allow us to use a uniform condition for multiple SNPs detection simultaneously...
February 16, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29451745/detection-of-ros1-positive-non-small-cell-lung-cancer-on-cytological-specimens-using-immunocytochemistry
#11
Tatjana Vlajnic, Spasenija Savic, Audrey Barascud, Betty Baschiera, Michel Bihl, Bruno Grilli, Michelle Herzog, Julien Rebetez, Lukas Bubendorf
BACKGROUND: Rearrangements of the ROS1 oncogene are found in 1% to 2% of non-small cell lung cancers (NSCLC) and are regarded as mutually exclusive oncogenic driver mutations. Since the approval of targeted therapy for ROS1-positive NSCLC, ROS1 testing has become a part of the diagnostic routine. Fluorescence in situ hybridization (FISH), optionally selected for by immunohistochemistry on histological material, is a common practice for the detection of ROS1 rearrangements. However, NSCLC often is diagnosed by cytology alone, requiring predictive marker testing on cytological specimens...
February 16, 2018: Cancer Cytopathology
https://www.readbyqxmd.com/read/29451640/glucose-level-evaluation-in-monopedicled-rectus-abdominis-myocutaneous-flap-after-venous-occlusion-experimental-study-in-rats
#12
Gustavo Levacov Berlim, Antônio Carlos Pinto Oliveira, Ciro Paz Portinho, Emerson Morello, Carolina Barbi Linhares, Marcus Vinicius Martins Collares
OBJECTIVE: to validate an experimental model for the measurement of glycemic levels in surgical flaps with the use of common glucometers, and to analyze the diagnostic criteria for hypoperfusion of such flaps. METHODS: we performed vertical myocutaneous rectus abdominis flaps with upper pedicles bilaterally in 20 male Wistar rats, divided into two groups: with and without venous occlusion of the pedicle. We measured glucose levels in the flaps and in the systemic circulation with standard glucometers...
2018: Revista do Colégio Brasileiro de Cirurgiões
https://www.readbyqxmd.com/read/29451621/a-comparison-of-the-efficiency-of-22g-versus-25g-needles-in-eus-fna-for-solid-pancreatic-mass-assessment-a-systematic-review-and-meta-analysis
#13
Hugo Gonçalo Guedes, Diogo Turiani Hourneaux de Moura, Ralph Braga Duarte, Martin Andres Coronel Cordero, Marcos Eduardo Lera Dos Santos, Spencer Cheng, Sergio Eiji Matuguma, Dalton Marques Chaves, Wanderley Marques Bernardo, Eduardo Guimarães Hourneaux de Moura
Our aim in this study was to compare the efficiency of 25G versus 22G needles in diagnosing solid pancreatic lesions by EUS-FNA. We performed a systematic review and meta-analysis. Studies were identified in five databases using an extensive search strategy. Only randomized trials comparing 22G and 25G needles were included. The results were analyzed by fixed and random effects. A total of 504 studies were found in the search, among which 4 randomized studies were selected for inclusion in the analysis. A total of 462 patients were evaluated (233: 25G needle/229: 22G needle)...
2018: Clinics
https://www.readbyqxmd.com/read/29451170/eus-fna-using-22g-nitinol-or-procore-needles-without-on-site-cytopathology
#14
Charing Ching Ning Chong, Anthony Yuen Bun Teoh, Raymond Shing Yan Tang, Anthony Wing Hung Chan, Enders Kwok Wai Ng, Paul Bo San Lai
Objectives: The project is aimed to compare the tissue sampling rate and the diagnostic accuracy rate of EUS-FNA using 22G nitinol and reverse bevel-tipped needles. Subjects and Methods: This was a prospective, randomized, crossover study in a tertiary academic hospital. All consecutive adult patients undergoing EUS-guided FNA for lesions > 2 cm were recruited. Patients fulfilling the inclusion and exclusion criteria underwent EUS-guided FNA using both needles in sequence...
January 2018: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/29451167/a-multicenter-comparative-trial-of-a-novel-eus-guided-core-biopsy-needle-sharkcore-%C3%A2-with-the-22-gauge-needle-in-patients-with-solid-pancreatic-mass-lesions
#15
Mariam Naveed, Ali A Siddiqui, Thomas E Kowalski, David E Loren, Ammara Khalid, Ayesha Soomro, Syed M Mazhar, Joseph Yoo, Raza Hasan, Silpa Yalamanchili, Nicholas Tarangelo, Linda J Taylor, Douglas G Adler
Background and Objectives: The ability to obtain adequate tissue of solid pancreatic lesions by EUS-guided remains a challenge. The aim of this study was to compare the performance characteristics and safety of EUS-FNA for evaluating solid pancreatic lesions using the standard 22-gauge needle versus a novel EUS biopsy needle. Methods: This was a multicenter retrospective study of EUS-guided sampling of solid pancreatic lesions between 2009 and 2015. Patients underwent EUS-guided sampling with a 22-gauge SharkCore (SC) needle or a standard 22-gauge FNA needle...
January 2018: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/29451149/a-study-on-clinical-characteristics-and-magnetic-resonance-imaging-manifestations-on-systemic-rosai-dorfman-disease
#16
Xiao Cheng, Jing-Liang Cheng, An-Kang Gao
Background: Rosai-Dorfman disease (RDD) is typically characterized by painless bilateral and symmetrical cervical lymphadenopathy, with associated fever and leukocytosis. The aim of the current study was to summarize the clinical features and imaging characteristics of RDD, in an effort to improve its diagnostic accuracy. Methods: The study was analyzed from 32 patients between January 2011 and December 2017; of these, 16 patients had pathologically diagnosed RDD, eight had pathologically diagnosed meningioma, and eight pathologically diagnosed lymphoma...
February 20, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29451114/molecular-tools-to-study-preharvest-food-safety-challenges
#17
Deepak Kumar, Siddhartha Thakur
Preharvest food safety research and activities have advanced over time with the recognition of the importance and complicated nature of the preharvest phase of food production. In developed nations, implementation of preharvest food safety procedures along with strict monitoring and containment at various postharvest stages such as slaughter, processing, storage, and distribution have remarkably reduced the burden of foodborne pathogens in humans. Early detection and adequate surveillance of pathogens at the preharvest stage is of the utmost importance to ensure a safe meat supply...
February 2018: Microbiology Spectrum
https://www.readbyqxmd.com/read/29450718/adc-as-a-useful-diagnostic-tool-for-differentiating-benign-and-malignant-vertebral-bone-marrow-lesions-and-compression-fractures-a-systematic-review-and-meta-analysis
#18
Chong Hyun Suh, Seong Jong Yun, Wook Jin, Sun Hwa Lee, So Young Park, Chang-Woo Ryu
OBJECTIVES: To assess the sensitivity and specificity of quantitative assessment of the apparent diffusion coefficient (ADC) for differentiating benign and malignant vertebral bone marrow lesions (BMLs) and compression fractures (CFs) METHODS: An electronic literature search of MEDLINE and EMBASE was conducted. Bivariate modelling and hierarchical summary receiver operating characteristic modelling were performed to evaluate the diagnostic performance of ADC for differentiating vertebral BMLs...
February 15, 2018: European Radiology
https://www.readbyqxmd.com/read/29450713/radiomic-signature-as-a-diagnostic-factor-for-histologic-subtype-classification-of-non-small-cell-lung-cancer
#19
Xinzhong Zhu, Di Dong, Zhendong Chen, Mengjie Fang, Liwen Zhang, Jiangdian Song, Dongdong Yu, Yali Zang, Zhenyu Liu, Jingyun Shi, Jie Tian
OBJECTIVES: To distinguish squamous cell carcinoma (SCC) from lung adenocarcinoma (ADC) based on a radiomic signature METHODS: This study involved 129 patients with non-small cell lung cancer (NSCLC) (81 in the training cohort and 48 in the independent validation cohort). Approximately 485 features were extracted from a manually outlined tumor region. The LASSO logistic regression model selected the key features of a radiomic signature. Receiver operating characteristic curve and area under the curve (AUC) were used to evaluate the performance of the radiomic signature in the training and validation cohorts...
February 15, 2018: European Radiology
https://www.readbyqxmd.com/read/29450560/-ecg-results-tips-and-tricks-for-the-correct-diagnosis-bradycardia-and-tachycardia-rhythm-disorders
#20
H-J Trappe
The 12-lead surface electrocardiogram (ECG) is of great importance for the diagnostics of cardiac arrhythmias. For the correct and systematic analysis it has a sensitivity and specificity for the correct diagnosis of supraventricular tachycardia or ventricular tachycardia of more than 95%. Nevertheless, the assessment of cardiac rhythm disorders is difficult for many physicians. In this way errors can occur, frequently due to a non-systematic analysis of the ECG; therefore, the aim of this article is to present the techniques and the necessary knowledge for assessment of the most frequent bradycardiac and tachycardiac heart rhythm disorders...
February 15, 2018: Herz
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