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https://www.readbyqxmd.com/read/28638471/rapid-detection-of-avian-influenza-virus-by-fluorescent-diagnostic-assay-using-an-epitope-derived-peptide
#1
Duong Tuan Bao, Do Thi Hoang Kim, Hyun Park, Bui Thi Cuc, Nguyen Minh Ngoc, Nguyen Thi Phuong Linh, Nguyen Chien Huu, Trinh Thi Thuy Tien, Nguyen Thi Viet Anh, Tung Dao Duy, Chom-Kyu Chong, Seung-Taek Yu, Do-Young Choi, Seon-Ju Yeo
Currently, the point of care testing (POCT) is not fully developed for subtype-specific avian influenza virus detection. In this study, an H5N1 hemaglutinin 1 (HA1) epitope (P0: KPNDAINF) and three modified peptides (P1: KPNTAINF, P2: KPNGAINF, P3: KPNDAINDAINF) were evaluated as POCT elements for rapid detection of avian influenza virus. Based on modeling predictions by Autodock Vina, binding affinity varied depending on alteration of one amino acid in these peptides. The binding energy of P2 indicated its potential for a strong interaction with HA...
2017: Theranostics
https://www.readbyqxmd.com/read/28632479/use-and-acceptability-of-salivary-hepatitis-c-virus-testing-in-an-english-young-offender-institution
#2
Sophie Candfield, Mannampallil I Samuel, David Ritchie, Candice McDonald, Michael Brady, Chris Taylor
People held in prison are at a high risk of having hepatitis C virus (HCV) and there is a public health drive in the UK to increase HCV testing in prisons and Young Offender Institutions (YOIs), with opt-out testing. There is an oral antibody test for HCV; this project aims to determine its acceptability in an English YOI setting. This project offered HCV oral point-of-care testing (POCT) using the OraQuick® test to 107 male young offenders attending a sexual health service at an English YOI, monitoring HCV positivity and evaluating acceptability...
January 1, 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28619082/assessing-changes-in-knowledge-attitude-and-practices-on-dengue-diagnosis-and-management-among-primary-care-physicians-after-the-largest-dengue-epidemic-in-singapore
#3
Junxiong Pang, Zoe Jane-Lara Hildon, Tun Linn Thein, Jing Jin, Yee Sin Leo
BACKGROUND: Dengue results in high morbidity and mortality globally. The knowledge, attitude and practices (KAP) of dengue management, including diagnosis, among primary care physicians (PCPs) are important to reduce dengue transmission and burden. However, there is a lack of understanding on the impact of dengue epidemic on dengue management. Hence, the aim of this study is to examine the changes in KAP on dengue management among PCPs before and after the largest dengue epidemic in 2013 in Singapore...
June 15, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28615273/analysis-of-the-potential-for-point-of-care-test-to-enable-individualised-treatment-of-infections-caused-by-antimicrobial-resistant-and-susceptible-strains-of-neisseria-gonorrhoeae-a-modelling-study
#4
Katy Me Turner, Hannah Christensen, Elisabeth J Adams, David McAdams, Helen Fifer, Anthony McDonnell, Neil Woodford
OBJECTIVE: To create a mathematical model to investigate the treatment impact and economic implications of introducing an antimicrobial resistance point-of-care test (AMR POCT) for gonorrhoea as a way of extending the life of current last-line treatments. DESIGN: Modelling study. SETTING: England. POPULATION: Patients accessing sexual health services. INTERVENTIONS: Incremental impact of introducing a hypothetical AMR POCT that could detect susceptibility to previous first-line antibiotics, for example, ciprofloxacin or penicillin, so that patients are given more tailored treatment, compared with the current situation where all patients are given therapy with ceftriaxone and azithromycin...
June 14, 2017: BMJ Open
https://www.readbyqxmd.com/read/28599290/early-postoperative-radiotherapy-is-associated-with-improved-outcomes-over-late-postoperative-radiotherapy-in-the-management-of-completely-resected-r0-stage-iiia-n2-non-small-cell-lung-cancer
#5
Huan-Huan Wang, Lei Deng, Qing-Lian Wen, Chun-Ze Zhang, Nicholas G Zaorsky, Bai-Lin Zhang, Jie Chen, Xian-Liang Zeng, Yao-Li Cui, Yang-Yang Shi, Hai-Ling Hou, Wei Wang, Bo Jiang, Jun Wang, Qing-Song Pang, Lu-Jun Zhao, Zhi-Yong Yuan, Ping Wang, Mao-Bin Meng
AIMS: The aim of this study was to evaluate the ideal timing of PORT in the management of completely resected (R0) Stage IIIA-N2 NSCLC. PATIENTS AND METHODS: Between January 2008 and December 2015, patients with known histologies of pathologic Stage IIIA-N2 NSCLC who underwent R0 resection and received PORT concurrent with or prior to two sequential cycles of chemotherapy ("early PORT") or with PORT administered after two cycles of chemotherapy ("late PORT") at multiple hospitals...
May 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28590117/nanotechnology-enhanced-no-wash-biosensors-for-in-vitro-diagnostics-of-cancer
#6
Xiaolin Huang, Yijing Liu, Bryant Yung, Yonghua Xiong, Xiaoyuan Chen
In vitro biosensors have been an integral component for early diagnosis of cancer in the clinic. Among them, no-wash biosensors, which only depend on the simple mixing of the signal generating probes and the sample solution without additional washing and separation steps, have been found to be particularly attractive. The outstanding advantages of facile, convenient, and rapid response of no-wash biosensors are especially suitable for point of care testing (POCT). One fast-growing field of no-wash biosensor design involves the usage of nanomaterials as signal amplification carriers or direct signal generating elements...
June 7, 2017: ACS Nano
https://www.readbyqxmd.com/read/28587476/do-the-new-fda-guidance-documents-help-improving-performance-of-blood-glucose-monitoring-systems-compared-with-iso-15197
#7
Guido Freckmann, Annette Baumstark, Stefan Pleus
Recently, the Food and Drug Administration (FDA) published guidance documents for point-of-care testing (POCT) and over-the-counter (OTC) blood glucose monitoring systems (BGMS). These are expected to improve weaknesses of the already established ISO 15197:2013 standard accuracy evaluation for OTC BGMS; however, the proposed criteria and procedures rather raise new questions. As an example, the OTC guidance stipulates tighter accuracy criteria in the low glycemic range than the POCT guidance for no obvious reason...
June 1, 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/28582902/research-on-high-sensitive-optomagnetic-sensor-for-rapid-detection-of-inflammation
#8
Chunxiu Liu, Haoyuan Cai, Jian Jia, Tianyang Cao, Chenghua Xu, Chang Liu
BACKGROUND: C-reactive protein (CRP) is used to evaluate the evolution of infections and sepsis in critically ill patients. For POCT testing, biosensor-based detection techniques offer quick and convenient application. OBJECTIVE: A prototype three dimensional chip was fabricated based on a new optomagnetic method to achieve the rapid detection of CRP. METHODS: This work investigates a new technology for the quick quantitative detection of the C-reactive protein (CRP) by total internal reflection magnetic imaging (TIRMI) on a three dimensional optomagnetic sensor...
May 19, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28577420/reliability-of-point-of-collection-testing-devices-for-drugs-of-abuse-in-oral-fluid-a-systematic-review-and-meta-analysis
#9
REVIEW
Juliana Nichterwitz Scherer, Taís Regina Fiorentin, Bruna Tassi Borille, Graciela Pasa, Tanara Rosangela Vieira Sousa, Lisia von Diemen, Renata Pereira Limberger, Flavio Pechansky
Point-of-collection testing (POCT) devices for drugs of abuse are used to screen for the presence of psychoactive substances (PAS) in different types of settings and environments. However, these quick and advantageous tools also present disadvantages, including low-reliability measures in comparison to chromatographic assays. Therefore, this article presents a systematic review and meta-analysis of studies evaluating the reliability of measurements of PAS detection in oral fluid using POCT devices. The reliability measures for detection of the five most important drug classes - cocaine, amphetamines, benzodiazepines, cannabinoids and opioids, are reported...
May 13, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28553762/evaluation-of-serum-neutrophil-gelatinase-associated-lipocalin-in-predicting-acute-kidney-injury-in-critically-ill-patients
#10
Chen-Chen Hang, Jun Yang, Shuo Wang, Chun-Sheng Li, Zi-Ren Tang
Objective This investigation evaluated the real-time point-of-care testing (RT-POCT) of neutrophil gelatinase-associated lipocalin (NGAL) for detecting acute kidney injury (AKI) and prognosis of critically ill patients. Methods A total of 249 critically ill patients in the emergency department (ED), who were diagnosed with acute decompensated heart failure, sepsis or diabetic ketoacidosis were enrolled in this study. All enrolled patients were followed up for 28 days or to death and the mortalities were recorded...
June 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28553714/detection-of-microrna-a-point-of-care-testing-method-based-on-a-ph-responsive-and-highly-efficient-isothermal-amplification
#11
Chang Feng, Xiaoxia Mao, Hai Shi, Bing Bo, Xiaoxia Chen, Tianshu Chen, Xiaoli Zhu, Genxi Li
Laborious and costly detection of miRNAs has brought challenges to its practical applications, especially for home health care, rigorous military medicine, and the third world. In this work, we present a pH-responsive miRNA amplification method, which allows the detection of miRNA just using a pH test paper. The operation is easy and no other costly instrument is involved, making the method very friendly. In our strategy, a highly efficient isothermal amplification of miRNA is achieved using an improved netlike rolling circle amplification (NRCA) technique...
June 5, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28542080/manuscript-title-multidisciplinary-point-of-care-testing-in-south-african-primary-healthcare-clinics-accelerates-hiv-art-initiation-but-does-not-alter-retention-in-care
#12
Wendy S Stevens, Natasha M Gous, William B MacLeod, Lawrence C Long, Ebrahim Variava, Neil A Martinson, Ian Sanne, Regina Osih, Lesley E Scott
BACKGROUND: Lack of accessible laboratory infrastructure limits HIV antiretroviral (ART) treatment initiation, monitoring and retention in many resource-limited settings. Point-of-care testing (POCT) is advocated as a mechanism to overcome these limitations. We executed a pragmatic, prospective, randomized, controlled trial comparing the impact of POCT versus standard-of-care (SOC) on treatment initiation and retention in care. METHOD: Selected POC technologies were embedded at 3 primary health clinics in South Africa...
May 23, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28525851/a-fully-integrated-distance-readout-elisa-chip-for-point-of-care-testing-with-sample-in-answer-out-capability
#13
Dan Liu, Xingrui Li, Junkai Zhou, Shibo Liu, Tian Tian, Yanling Song, Zhi Zhu, Leiji Zhou, Tianhai Ji, Chaoyong Yang
Enzyme-linked immunosorbent assay (ELISA) is a popular laboratory technique for detection of disease-specific protein biomarkers with high specificity and sensitivity. However, ELISA requires labor-intensive and time-consuming procedures with skilled operators and spectroscopic instrumentation. Simplification of the procedures and miniaturization of the devices are crucial for ELISA-based point-of-care (POC) testing in resource-limited settings. Here, we present a fully integrated, instrument-free, low-cost and portable POC platform which integrates the process of ELISA and the distance readout into a single microfluidic chip...
May 4, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28511553/whole-blood-platelet-aggregation-test-and-prediction-of-hemostatic-difficulty-after-tooth-extraction-in-patients-receiving-antiplatelet-therapy
#14
Yasushi Nagao, Rikuo Masuda, Akane Ando, Mutsumi Nonaka, Akiko Nishimura, Kinuko Goto, Yasubumi Maruoka, Takehiko Iijima
When patients on antiplatelet therapy (APT) require minor invasive surgery, APT is usually continued to limit the risk of thrombosis. However, the possibility of hemostatic difficulties necessitates the monitoring of platelet aggregation to prevent unexpected bleeding. We examined whether whole blood aggregometry as a point-of-care testing (POCT) could be useful as a tool for predicting hemostatic difficulties. Sixty-five patients receiving APT and 15 patients who were not receiving APT were enrolled in the present study; all patients were scheduled to undergo a tooth extraction...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28491862/comparison-of-fecal-calprotectin-methods-for-predicting-relapse-of-pediatric-inflammatory-bowel-disease
#15
Saranya Kittanakom, Md Sharif Shajib, Kristine Garvie, Joceline Turner, Dan Brooks, Sufian Odeh, Robert Issenman, V Tony Chetty, Joseph Macri, Waliul I Khan
Background. Pediatric inflammatory bowel disease (IBD) is on the rise worldwide. Endoscopies are necessary for IBD assessment but are invasive, expensive, and inconvenient. Recently, fecal calprotectin (FCal) was proposed as a noninvasive and specific marker of gut inflammation. We evaluated the analytical performance of three FCal assays and their clinical performance in predicting relapse in pediatric IBD. Methods. This study used 40 pediatric IBD and 40 random non-IBD patients' fecal samples. Two automated ELISAs (Bühlmann and PhiCal® Calprotectin-EIA) and an EliA (Phadia 250 EliA-Calprotectin) were used to evaluate the analytical performance...
2017: Canadian Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28460169/bioorthogonal-reaction-mediated-elisa-using-peroxide-test-strip-as-signal-readout-for-point-of-care-testing
#16
Bei Ran, Yunlei Xianyu, Mingling Dong, Yiping Chen, Zhiyong Qian, Xingyu Jiang
This work demonstrates a highly sensitive peroxide test strip (PTS)-based enzyme-linked immunosorbent assay (ELISA) for both qualitative and quantitative detection of drugs of abuse (morphine) and disease biomarkers (interleukin-6 and HIV-1 capsid antigen p24). This color-based PTS is a commercially available product with advantages of low cost, easy operation, and portability, and it is an ideal signal readout strategy in ELISA to simplify the immunoassay procedures and enable point-of-care testing (POCT)...
June 6, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28459048/hiv-point-of-care-testing-in-canadian-settings-a-scoping-review
#17
REVIEW
Alexa Minichiello, Michelle Swab, Meck Chongo, Zack Marshall, Jacqueline Gahagan, Allison Maybank, Aurélie Hot, Michael Schwandt, Sonia Gaudry, Oliver Hurley, Shabnam Asghari
BACKGROUND: HIV point-of-care testing (POCT) was approved for use in Canada in 2005 and provides important public health benefits by providing rapid screening results rather than sending a blood sample to a laboratory and waiting on test results. Access to test results soon after testing (or during the same visit) is believed to increase the likelihood that individuals will receive their results and improve access to confirmatory testing and linkages to care. This paper reviews the literature on the utilization of HIV POCT across Canadian provinces...
2017: Frontiers in Public Health
https://www.readbyqxmd.com/read/28457907/consumer-perceptions-of-and-willingness-to-pay-for-point-of-care-testing-services-in-the-community-pharmacy
#18
Kenneth C Hohmeier, Benjamin Loomis, Justin Gatwood
BACKGROUND: Point-of-care testing (POCT) is a specialty of laboratory medicine that occurs at the bedside or near the patient when receiving health services. Despite its clinical utility, POCT implementation in the community pharmacy setting is slow due to uncertainty about the market for this novel service and remuneration for services rendered. OBJECTIVE: To identify 1) demographics and 2) willingness-to-pay preferences of the market niche of consumers who prefer to receive POCT services in the community pharmacy...
April 26, 2017: Research in Social & Administrative Pharmacy: RSAP
https://www.readbyqxmd.com/read/28444425/pharmacogenetic-markers-to-predict-the-clinical-response-to-methotrexate-in-south-indian-tamil-patients-with-psoriasis
#19
S Indhumathi, Medha Rajappa, Laxmisha Chandrashekar, P H Ananthanarayanan, D M Thappa, V S Negi
INTRODUCTION: Despite the advent of several new systemic therapies, methotrexate remains the gold standard for the treatment of moderate to severe psoriasis. However, there exists a significant heterogeneity in individual response to methotrexate. There are no consistently reliable markers to predict methotrexate treatment response till date. OBJECTIVES: We aimed to demonstrate the association of certain genetic variants in the HLA (HLA-A2, HLA-B17, and HLA-Cw6) and the non-HLA genes including T-helper (Th)-1, Th-2, Th-17 cytokine genes (IFN-γ, IL-2, IL-4, IL-10, IL-12B, and IL-23R), and T-regulatory gene (FOXP3) with the methotrexate treatment response in South Indian Tamil patients with psoriasis...
April 25, 2017: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28431640/rapid-assessment-of-drugs-of-abuse
#20
Joesph R Wiencek, Jennifer M Colby, James H Nichols
Laboratory testing for drugs of abuse has become standard practice in many settings both forensic and clinical. Urine is the predominant specimen, but other specimens are possible including hair, nails, sweat, and oral fluid. Point-of-care test kits provide for rapid analysis at the site where specimens are collected allowing for immediate action on the results. POCT is based on immunochromatography where the drug in the patient's sample competes with drug and antibody conjugates in the test to develop or block the development of a colored line...
2017: Advances in Clinical Chemistry
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