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Low resource diagnostics

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https://www.readbyqxmd.com/read/28102419/towards-encoded-particles-for-highly-multiplexed-colorimetric-point-of-care-autoantibody-detection
#1
Gustav Svedberg, Yunjin Jeong, Hunjong Na, Jisung Jang, Peter Nilsson, Sunghoon Kwon, Jesper Gantelius, Helene Andersson Svahn
Highly multiplexed point of care tests could improve diagnostic accuracy and differential diagnostic capacity in for instance emergency medicine and low resource environments. Available technology platforms for POC biomarker detection are typically simplex or low-plexed, whereas common lab-based microarray systems allow for the simultaneous detection of thousands of DNA or protein biomarkers. In this study, we demonstrate a novel suspension particle array platform that utilizes 900 μm bricks for POC amenable colorimetric biomarker detection with an encoding capacity of over two million...
January 19, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28100439/considerations-for-an-access-centered-design-of-the-fever-thermometer-in-low-resource-settings-a-literature-review
#2
REVIEW
Rikako Iwamoto, Ana Laura Rodrigues Santos, Niels Chavannes, Ria Reis, Jan Carel Diehl
BACKGROUND: The lack of adequate information about fever in low-resource settings, its unreliable self-assessment, and poor diagnostic practices may result in delayed care and under-or-overdiagnosis of diseases such as malaria. The mismatches of existing fever thermometers in the context of use imply that the diagnostic tools and connected services need to be studied further to address the challenges of fever-related illnesses and their diagnostics. OBJECTIVE: This study aims to inform a product-service system approach to design a reliable and accessible fever thermometer and connected services, as well as contribute to the identification of innovative opportunities to improve health care in low-resource settings...
January 18, 2017: JMIR Human Factors
https://www.readbyqxmd.com/read/28096624/genetic-variability-and-discrimination-of-low-doses-of-toxocara-spp-from-public-areas-soil-inferred-by-loop-mediated-isothermal-amplification-assay-as-a-field-friendly-molecular-tool
#3
Maryam Ozlati, Adel Spotin, Abbas Shahbazi, Mahmoud Mahami-Oskouei, Teimour Hazratian, Mohammad Adibpor, Ehsan Ahmadpour, Afsaneh Dolatkhah, Paria Khoshakhlagh
ABSTRACT: Aim: One of the main diagnostic problems of conventional polymerase chain reaction (PCR) is indiscrimination of low parasitic loads in soil samples. The aim of this study is to determine the genetic diversity and identification of Toxocara spp. from public areas soil inferred by loop-mediated isothermal amplification (LAMP) assay. MATERIALS AND METHODS: A total of 180 soil samples were collected from various streets and public parks of northwest Iran. The DNA of recovered Toxocara eggs were extracted and amplified by PCR and LAMP following ZnSO4 flotation technique...
December 2016: Veterinary World
https://www.readbyqxmd.com/read/28092493/enhancing-collaborative-case-diagnoses-through-unified-medical-language-system-based-disambiguation-a-case-study-of-the-zika-virus
#4
Albert Moreira, Raúl Alonso-Calvo, Alberto Muñoz, José Crespo
BACKGROUND: During clinical case diagnoses, especially in low-resourced areas, the use of vocabularies within Unified Medical Language System (UMLS) can strengthen discussions between health professionals and, in certain cases, eliminate the need, enabling faster treatment. INTRODUCTION: This article presents the benefits of using UMLS as a collaborative discussion tool and verifies its impact. MATERIALS AND METHODS: The Sanar system has been improved by UMLS when using text retrieval to extract relevant medical concepts from cases investigated by the user and to provide contextualized searches of related articles...
January 16, 2017: Telemedicine Journal and E-health: the Official Journal of the American Telemedicine Association
https://www.readbyqxmd.com/read/28092381/miniaturized-devices-for-point-of-care-molecular-detection-of-hiv
#5
REVIEW
Michael Mauk, Jinzhao Song, Haim H Bau, Robert Gross, Frederic D Bushman, Ronald G Collman, Changchun Liu
The HIV pandemic affects 36.7 million people worldwide, predominantly in resource-poor settings. Nucleic acid-based molecular detection of HIV plays a significant role in antiretroviral treatment monitoring for HIV patients, as well as diagnosis of HIV infection in infants. Currently available molecular diagnostic methods are complex, time-consuming and relatively expensive, thus limiting their use in resource-poor settings. Recent advances in microfluidics technology have made possible low-cost integrated miniaturized devices for molecular detection and quantification of HIV at the point of care...
January 16, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28086864/direct-detection-of-falciparum-and-non-falciparum-malaria-dna-from-a-drop-of-blood-with-high-sensitivity-by-the-dried-lamp-system
#6
Kyoko Hayashida, Kiichi Kajino, Humphrey Simukoko, Martin Simuunza, Joseph Ndebe, Amos Chota, Boniface Namangala, Chihiro Sugimoto
BACKGROUND: Because of the low sensitivity of conventional rapid diagnostic tests (RDTs) for malaria infections, the actual prevalence of the diseases, especially those caused by non-Plasmodium falciparum (non-Pf) species, in asymptomatic populations remain less defined in countries lacking in well-equipped facilities for accurate diagnoses. Our direct blood dry LAMP system (CZC-LAMP) was applied to the diagnosis of malaria as simple, rapid and highly sensitive method as an alternative for conventional RDTs in malaria endemic areas where laboratory resources are limited...
January 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28077751/performance-of-health-workers-using-an-electronic-algorithm-for-the-management-of-childhood-illness-in-tanzania-a-pilot-implementation-study
#7
Clotilde Rambaud-Althaus, Amani Shao, Josephine Samaka, Ndeniria Swai, Seneca Perri, Judith Kahama-Maro, Marc Mitchell, Valérie D'Acremont, Blaise Genton
In low-resource settings, where qualified health workers (HWs) are scarce and childhood mortality high, rational antimicrobial prescription for childhood illnesses is a challenge. To assess whether smartphones running guidelines, as compared with paper support, improve consultation process and rational use of medicines for children, a pilot cluster-randomized controlled study was conducted in Tanzania. Nine primary health-care facilities (HFs) were randomized into three arms: 1) paper algorithm, 2) electronic algorithm on a smartphone, and 3) control...
January 11, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28075337/implementation-of-point-of-care-diagnostics-in-rural-primary-healthcare-clinics-in-south-africa-perspectives-of-key-stakeholders
#8
Tivani P Mashamba-Thompson, Ngcwalisa A Jama, Benn Sartorius, Paul K Drain, Rowan M Thompson
INTRODUCTION: Key stakeholders' involvement is crucial to the sustainability of quality point-of-care (POC) diagnostics services in low-and-middle income countries. The aim of this study was to explore key stakeholder perceptions on the implementation of POC diagnostics in rural primary healthcare (PHC) clinics in South Africa. METHOD: We conducted a qualitative study encompassing in-depth interviews with multiple key stakeholders of POC diagnostic services for rural and resource-limited PHC clinics...
January 8, 2017: Diagnostics
https://www.readbyqxmd.com/read/28069472/semi-quantitative-real-time-pcr-a-useful-approach-to-identify-persons-with-low-replicative-chronic-hepatitis-b
#9
Joany Castéra-Guy, Pierre-Alain Rubbo, Dramane Kania, Maud Lemoine, Philippe Van de Perre, Edouard Tuaillon
Antiviral therapy can be avoided during the low replicative phase of chronic Hepatitis B virus (HBV) infection which is characterized notably by HBV DNA concentration below 2000 IU/ml. Simplified diagnostic tests can improve access to HBV DNA monitoring in resource-limited settings. The capacity of a new semi-quantitative real-time PCR approach based on sample-to-standard relative detection of the target to discriminate samples with HBV DNA levels above or below the clinical threshold of 2000 IU/ml was compared to a quantitative assay (Roche CobasAmpliPrep/CobasTaqMan HBV Test v2...
January 6, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28067994/identification-of-morphological-and-biochemical-changes-in-keratin-8-18-knock-down-cells-using-raman-spectroscopy
#10
S P Singh, Hunain Alam, Crismita Dmello, Hitesh Mamgain, Milind M Vaidya, Ramachandra Rao Dasari, C Murali Krishna
Accurate understanding of cellular processes and responses to stimuli is of paramount importance in biomedical research and diagnosis. Raman spectroscopy (RS), a label-free and nondestructive spectroscopic method has the potential to serve as a novel 'theranostics' tool. Both fiber-optic and micro-Raman studies have demonstrated efficacy in diagnostics and therapeutic response monitoring. In the present study, we have evaluated the potential of micro-Raman spectroscopic maps in identifying changes induced by loss of K8/18 proteins in a tongue cancer cell line...
January 9, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28063462/going-digital-a-narrative-overview-of-the-clinical-and-organisational-impacts-of-ehealth-technologies-in-hospital-practice
#11
Justin Keasberry, Ian A Scott, Clair Sullivan, Andrew Staib, Richard Ashby
Objective The aim of the present study was to determine the effects of hospital-based eHealth technologies on quality, safety and efficiency of care and clinical outcomes.Methods Systematic reviews and reviews of systematic reviews of eHealth technologies published in PubMed/Medline/Cochrane Library between January 2010 and October 2015 were evaluated. Reviews of implementation issues, non-hospital settings or remote care or patient-focused technologies were excluded from analysis. Methodological quality was assessed using a validated appraisal tool...
January 9, 2017: Australian Health Review: a Publication of the Australian Hospital Association
https://www.readbyqxmd.com/read/28061987/management-of-multiple-myeloma-in-resource-constrained-settings
#12
REVIEW
Lalit Kumar, Ranjit Kumar Sahoo
The prognosis of patients with multiple myeloma (MM) has improved significantly in the past two decades. This is attributed to use of novel agents for induction, high-dose chemotherapy and autologous stem cell transplantation (ASCT), maintenance therapy, and improved supportive care. Currently, evidence-based management guidelines/recommendations developed by International societies/groups are being followed partially in low-resource settings. Lack of quality diagnostics (eg, cytogenetics/fluorescence in situ hybridization (FISH), serum free light chains), novel therapeutics, and trained manpower, and limited financial resources are key challanges...
December 2016: Seminars in Oncology
https://www.readbyqxmd.com/read/28061421/low-cost-and-facile-fabrication-of-a-paper-based-capillary-electrophoresis-microdevice-for-pathogen-detection
#13
Jee Won Lee, Dohwan Lee, Yong Tae Kim, Eun Yeol Lee, Do Hyun Kim, Tae Seok Seo
This paper describes the development of a novel paper-based capillary electrophoresis (pCE) microdevice using mineral paper, which is durable, oil and tear resistant, and waterproof. The pCE device is inexpensive (~$1.6 per device for materials), simple to fabricate, lightweight, and disposable, so it is more adequate for point-of-care (POC) pathogen diagnostics than a conventional CE device made of glass, quartz, silicon or polymer. In addition, the entire fabrication process can be completed within 1h without using expensive clean room facilities and cumbersome photolithography procedures...
December 28, 2016: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28060886/point-of-care-p24-infant-testing-for-hiv-may-increase-patient-identification-despite-low-sensitivity
#14
Bindiya Meggi, Timothy Bollinger, Nédio Mabunda, Adolfo Vubil, Ocean Tobaiwa, Jorge I Quevedo, Osvaldo Loquiha, Lara Vojnov, Trevor F Peter, Ilesh V Jani
The long delay in returning test results during early infant diagnosis of HIV (EID) often causes loss-to-follow-up prior to antiretroviral treatment (ART) initiation in resource-limited settings. A point-of-care (POC) test may help overcome these challenges. We evaluated the performance of the LYNX p24 Antigen POC test in Mozambique. 879 HIV-exposed infants under 18 months of age were enrolled consecutively at three primary healthcare clinics (PHC). Lancet heel-drawn blood was tested on-site by nurses using a prototype POC test for HIV Gag p24 antigen detection...
2017: PloS One
https://www.readbyqxmd.com/read/28060846/prediction-of-under-detection-of-paediatric-tuberculosis-in-the-democratic-republic-of-congo-experience-of-six-years-in-the-south-kivu-province
#15
Emmanuel André, Yvette Lufungulo Bahati, Eric Mulume Musafiri, Olivier Bahati Rusumba, Dimitri Van der Linden, Francis Zech
INTRODUCTION: In the field of tuberculosis (TB), and particularly in regard to paediatric TB (PedTB), clinical skills of health professionals play an important role in determining quality of care. In an era where novel diagnostic technologies and efficient treatment regimens are being made available for the poorest, we must not divert our attention from the importance of clinical skills, as this deliverable remains the cornerstone of individualized patient care and ultimately the best assurance for optimal use of resources...
2017: PloS One
https://www.readbyqxmd.com/read/28057056/right-iliac-vein-thrombosis-mimicking-acute-appendicitis-in-pregnancy-a-case-report
#16
Desmond Aroke, Benjamin Momo Kadia, Christian Akem Dimala, Ndemazie Nkafu Bechem, Larry Tangie Ngek, Simeon Pierre Choukem
BACKGROUND: Right iliac vein thrombosis is uncommon in pregnancy. Nonetheless, when it does occur, its presentation could be very unspecific with important diagnostic challenges and this could have negative therapeutic consequences especially in a resource limited setting. CASE PRESENTATION: The historical, clinical and laboratory data of a 30 year old G2P1001 woman of African ethnicity at 11 weeks of gestation pointed towards a right iliac vein thrombosis missed for an acute appendicitis with subsequent appendectomy and failure to cure...
January 3, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28048484/we-fg-201-04-cloud-based-collaboration-for-radiotherapy-clinical-trials-research-and-training
#17
J Palta
: Many low- and middle-income countries lack the resources and services to manage cancer, from screening and diagnosis to radiation therapy planning, treatment and quality assurance. The challenges in upgrading or introducing the needed services are enormous, and include severe shortages in equipment and trained staff. In this symposium, we will describe examples of technology and scientific research that have the potential to impact all these areas. These include: (1) the development of high-quality/low-cost colposcopes for cervical cancer screening, (2) the application of automated radiotherapy treatment planning to reduce staffing shortages, (3) the development of a novel radiotherapy treatment unit, and (4) utilizing a cloud-based infrastructure to facilitate collaboration and QA...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048374/we-fg-201-00-high-impact-technologies-for-low-resource-environments
#18
Laurence Edward Court
: Many low- and middle-income countries lack the resources and services to manage cancer, from screening and diagnosis to radiation therapy planning, treatment and quality assurance. The challenges in upgrading or introducing the needed services are enormous, and include severe shortages in equipment and trained staff. In this symposium, we will describe examples of technology and scientific research that have the potential to impact all these areas. These include: (1) the development of high-quality/low-cost colposcopes for cervical cancer screening, (2) the application of automated radiotherapy treatment planning to reduce staffing shortages, (3) the development of a novel radiotherapy treatment unit, and (4) utilizing a cloud-based infrastructure to facilitate collaboration and QA...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047729/we-fg-201-01-patient-centric-technologies-for-diagnosis-of-breast-and-cervical-cancer
#19
N Ramanujam
: Many low- and middle-income countries lack the resources and services to manage cancer, from screening and diagnosis to radiation therapy planning, treatment and quality assurance. The challenges in upgrading or introducing the needed services are enormous, and include severe shortages in equipment and trained staff. In this symposium, we will describe examples of technology and scientific research that have the potential to impact all these areas. These include: (1) the development of high-quality/low-cost colposcopes for cervical cancer screening, (2) the application of automated radiotherapy treatment planning to reduce staffing shortages, (3) the development of a novel radiotherapy treatment unit, and (4) utilizing a cloud-based infrastructure to facilitate collaboration and QA...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047079/we-fg-201-02-automated-treatment-planning-for-low-resource-settings
#20
L Court
: Many low- and middle-income countries lack the resources and services to manage cancer, from screening and diagnosis to radiation therapy planning, treatment and quality assurance. The challenges in upgrading or introducing the needed services are enormous, and include severe shortages in equipment and trained staff. In this symposium, we will describe examples of technology and scientific research that have the potential to impact all these areas. These include: (1) the development of high-quality/low-cost colposcopes for cervical cancer screening, (2) the application of automated radiotherapy treatment planning to reduce staffing shortages, (3) the development of a novel radiotherapy treatment unit, and (4) utilizing a cloud-based infrastructure to facilitate collaboration and QA...
June 2016: Medical Physics
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