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https://www.readbyqxmd.com/read/27921101/the-effect-of-common-anticoagulants-in-detection-and-quantification-of-malaria-parasitemia-in-human-red-blood-cells-by-atr-ftir-spectroscopy
#1
Miguela Martin, David Perez-Guaita, Dean W Andrew, Jack S Richards, Bayden R Wood, Philip Heraud
Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR-FTIR) has the potential to become a new diagnostic tool for malaria and other diseases. For point-of-care testing, the use of ATR-FTIR in malaria diagnosis enables the analysis of blood in the aqueous state, which represents an enormous advantage by minimising the sample preparation by removing the need for cell fixation. Here we report the quantification of malaria parasitemia in human RBCs in their normal physiological aqueous state...
December 6, 2016: Analyst
https://www.readbyqxmd.com/read/27920568/reduced-butyrylcholinesterase-activity-is-an-early-indicator-of-trauma-induced-acute-systemic-inflammatory-response
#2
Aleksandar R Zivkovic, Jochen Bender, Thorsten Brenner, Stefan Hofer, Karsten Schmidt
PURPOSE: Early diagnosis of systemic inflammatory response syndrome is fundamentally important for an effective and a goal-directed therapy. Various inflammation biomarkers have been used in clinical and experimental practice. However, a definitive diagnostic tool for an early detection of systemic inflammation remains to be identified. Acetylcholine (Ach) has been shown to play an important role in the inflammatory response. Serum cholinesterase (butyrylcholinesterase [BChE]) is the major Ach hydrolyzing enzyme in blood...
2016: Journal of Inflammation Research
https://www.readbyqxmd.com/read/27920422/population-based-screening-for-selective-immunoglobulin-a-iga-deficiency-in-lithuanian-children-using-a-rapid-antibody-based-fingertip-test
#3
Vaidotas Urbonas, Jolita Sadauskaite, Rimante Cerkauskiene, Arvydas Kaminskas, Markku Mäki, Kalle Kurppa
BACKGROUND Selective immunoglobulin A (IgA) deficiency is the most common inherited immunodeficiency disorder worldwide. An early diagnosis is advocated because of the increased risk of infections, autoimmune diseases, and allergic reactions. We investigated the usefulness of a rapid point-of-care test in detecting for IgA deficiency in a population with a previously unknown prevalence. MATERIAL AND METHODS Altogether, 1000 children aged 11-13 years from randomly selected Lithuanian schools were enrolled. A point-of-care test with a fingertip sample was used to screen for the presence of IgA deficiency in children whose parents gave consent...
December 6, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27919387/impacts-of-structuring-the-electronic-health-record-results-of-a-systematic-literature-review-from-the-perspective-of-secondary-use-of-patient-data
#4
REVIEW
Riikka Vuokko, Päivi Mäkelä-Bengs, Hannele Hyppönen, Minna Lindqvist, Persephone Doupi
PURPOSE: To explore the impacts that structuring of electronic health records (EHRs) has had from the perspective of secondary use of patient data as reflected in currently published literature. This paper presents the results of a systematic literature review aimed at answering the following questions; (1) what are the common methods of structuring patient data to serve secondary use purposes; (2) what are the common methods of evaluating patient data structuring in the secondary use context, and (3) what impacts or outcomes of EHR structuring have been reported from the secondary use perspective...
January 2017: International Journal of Medical Informatics
https://www.readbyqxmd.com/read/27918640/label-free-virus-capture-and-release-by-a-microfluidic-device-integrated-with-porous-silicon-nanowire-forest
#5
Yiqiu Xia, Yi Tang, Xu Yu, Yuan Wan, Yizhu Chen, Huaguang Lu, Si-Yang Zheng
Viral diseases are perpetual threats to human and animal health. Detection and characterization of viral pathogens require accurate, sensitive, and rapid diagnostic assays. For field and clinical samples, the sample preparation procedures limit the ultimate performance and utility of the overall virus diagnostic protocols. This study presents the development of a microfluidic device embedded with porous silicon nanowire (pSiNW) forest for label-free size-based point-of-care virus capture in a continuous curved flow design...
December 5, 2016: Small
https://www.readbyqxmd.com/read/27917770/evaluating-point-of-care-testing-for-glycosylated-haemoglobin-in-public-sector-primary-care-facilities-in-the-western-cape-south-africa
#6
R Mash, A Ugoagwu, C Vos, M Rensburg, R Erasmus
BACKGROUND: Diabetes mellitus contributes significantly to the burden of disease in South Africa (SA). Monitoring of glycaemic control with glycosylated haemoglobin (HbA1c) is recommended, even though current laboratory-based testing does not support immediate clinical decision-making. OBJECTIVES: To evaluate the costs and consequences for quality of care by introducing point-of-care (POC) testing for HbA1c for patients with type 2 diabetes at community health centres in Cape Town, SA...
December 1, 2016: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/27917431/a-novel-miniaturized-biofilter-based-on-silicon-micropillars-for-nucleic-acid-extraction
#7
Salvatore Petralia, Emanuele Luigi Sciuto, Sabrina Conoci
New miniaturised microfluidic biofilter (BF) devices based on silicon micropillars have been developed and tested regarding their ability to extract HBV (Hepatitis B Virus) bacterial DNA from biological sample solutions. The device is composed of a silicon microchannel in which the pillars are distributed at the bottom surface. The extracted DNA solutions were analysed by real time PCR amplification and the biofilter performance was evaluated. The results obtained show that the DNA binding to the biofilters and the elution efficiency strictly depend on the pillars' geometrical dimensions and increase proportionally with the surface/volume ratio...
December 5, 2016: Analyst
https://www.readbyqxmd.com/read/27917160/development-of-multiple-cross-displacement-amplification-label-based-gold-nanoparticles-lateral-flow-biosensor-for-detection-of-shigella-spp
#8
Yi Wang, Yan Wang, Jianguo Xu, Changyun Ye
Shigella spp., the etiological agent of shigellosis or "bacillary dysentery," are responsible for considerable morbidity and mortality in excess of a million deaths globally per year. Although PCR-based techniques (such as PCR-based dipstick biosensors) have been used for the molecular diagnosis of infectious disease, these assays were restricted due to the need for a sophisticated thermal cycling apparatus to denature target templates. To facilitate simple and rapid detection of target pathogens, we successfully devised an inexpensive, reliable and nearly instrument-free molecular technique, which incorporates multiple cross displacement amplification (MCDA) combined with a newly designed lateral flow biosensor (LFB) for visual, sensitive and specific detection of Shigella...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27916543/rapid-assessment-of-tetanus-vaccine-induced-immunity-in-bangladesh-and-the-gambia
#9
Girija Ramakrishnan, Marcia Wright, Masud Alam, Caitlin Naylor, Mamun Kabir, Ayesha Zerin, Tahsin Ferdous, Karl Pedersen, Branwen J Hennig, Jeffrey R Donowitz, Rita Wegmuller, Rashidul Haque, William A Petri, Joel Herbein, Carol A Gilchrist
We have developed recombinant fragment C based rapid point of care dipstick devices to assess tetanus immunization status using plasma or whole blood. The devices demonstrated specificity of 0.90 and sensitivity of 0.90 (whole blood)/0.94 (plasma) at field sites in Bangladesh and The Gambia when compared to a commercial ELISA with the immune cut-off titer set as ≥0.1IU/mL.
November 24, 2016: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/27916122/facile-colorimetric-assay-of-alkaline-phosphatase-activity-using-fe-ii-phenanthroline-reporter
#10
Qiong Hu, Baojing Zhou, Pengyun Dang, Lianzhi Li, Jinming Kong, Xueji Zhang
We report a versatile approach for the colorimetric assay of alkaline phosphatase (ALP) activity based on the distinctive metal-to-ligand charge-transfer (MLCT) absorption properties of Fe(II)-phenanthroline reporter. In the presence of ALP, the applied substrate ascorbic acid 2-phosphate is enzymatically hydrolyzed to produce ascorbic acid, which then reduces Fe(3+) to Fe(2+). The complexation of Fe(2+) with the bathophenanthroline disulfonate (BPS) ligand generates a blood-red Fe(BPS)3(4-) reporter, which is characterized by an intense MLCT absorption band at 535 nm in the visible range...
January 15, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/27916021/use-of-point-of-care-ultrasound-in-long-bone-fractures-a-systematic-review-and-meta-analysis
#11
Lucas B Chartier, Laura Bosco, Lauren Lapointe-Shaw, Jordan Chenkin
OBJECTIVES: Long bone fractures (LBFs) are among the most frequent traumatic injuries seen in emergency departments. Reduction and immobilization is the most common form of treatment for displaced fractures. Point-of-care ultrasound (PoCUS) is a promising technique for diagnosing LBFs and assessing the success of reduction attempts. This article offers a comprehensive review of the use of PoCUS for the diagnosis and reduction of LBFs. Data source MEDLINE and EMBASE databases were searched through July 19, 2015...
December 5, 2016: CJEM
https://www.readbyqxmd.com/read/27914856/occult-hiv-1-drug-resistance-to-thymidine-analogues-following-failure-of-first-line-tenofovir-combined-with-a-cytosine-analogue-and-nevirapine-or-efavirenz-in-sub-saharan-africa-a-retrospective-multi-centre-cohort-study
#12
John Gregson, Pontiano Kaleebu, Vincent C Marconi, Cloete van Vuuren, Nicaise Ndembi, Raph L Hamers, Phyllis Kanki, Christopher J Hoffmann, Shahin Lockman, Deenan Pillay, Tulio de Oliveira, Nathan Clumeck, Gillian Hunt, Bernhard Kerschberger, Robert W Shafer, Chunfu Yang, Elliot Raizes, Rami Kantor, Ravindra K Gupta
BACKGROUND: HIV-1 drug resistance to older thymidine analogue nucleoside reverse transcriptase inhibitor drugs has been identified in sub-Saharan Africa in patients with virological failure of first-line combination antiretroviral therapy (ART) containing the modern nucleoside reverse transcriptase inhibitor tenofovir. We aimed to investigate the prevalence and correlates of thymidine analogue mutations (TAM) in patients with virological failure of first-line tenofovir-containing ART...
November 30, 2016: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/27914758/fluid-therapy-in-lung-disease
#13
REVIEW
Elizabeth Rozanski, Alex Lynch
Fluid therapy is the cornerstone of supportive care in veterinary medicine. In dogs and cats with preexisting confirmed or suspected pulmonary disease, concerns may exist that the fluid therapy may impair gas exchange, either through increases in hydrostatic pressures or extravasation. Colloidal therapy is more likely to magnify lung injury compared with isotonic crystalloids. Radiographic evidence of fluid overload is a late-stage finding, whereas point-of-care ultrasound may provide earlier information that can also be assessed periodically at the patient side...
December 1, 2016: Veterinary Clinics of North America. Small Animal Practice
https://www.readbyqxmd.com/read/27914367/single-wall-carbon-nanotube-electrode-system-capable-of-quantitative-detection-of-cd4-t-cells
#14
Joonhyub Kim, Gayoung Park, Seoho Lee, Suk-Won Hwang, Namki Min, Kyung-Mi Lee
Development of CNT-based CD4(+) T cell imunosensors remains in its infancy due to the poor immobilization efficiency, lack of reproducibility, and difficulty in providing linear quantification. Here, we developed a fully-integrated single wall carbon nanotube (SWCNT)-based immunosensor capable of selective capture and linear quantification of CD4(+) T cells with greater dynamic range. By employing repeated two-step oxygen (O2) plasma treatment processes with 35 days of recovery periods, we achieved the enhanced functionalization of the CNT surface and the removal of the byproduct of spray-coated SWCNTs that hinders charge transfer and stable CD4(+) T cell sensing...
November 25, 2016: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/27914366/rapid-and-low-cost-biosensor-for-the-detection-of-staphylococcus-aureus
#15
Ghadeer A R Y Suaifan, Sahar Alhogail, Mohammed Zourob
Staphylococcus aureus (S. aureus) is one of the most common etiological agents in hospital-acquired infections and food-borne illness. S. aureus toxins and virulence proteases often circulate in host blood vessels leading to life-threatening diseases. Standard identification approaches include bacterial culturing method, which takes several days. Other nucleic acid-based methods were expensive and required trained personnel. To surmount these limitations, a paper-based biosensor was developed. The sensing mechanism was based on the proteolytic activity of S...
November 21, 2016: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/27913318/walsh-hadamard-based-3d-steganography-for-protecting-sensitive-information-in-point-of-care
#16
Alsharif Abuadbba, Ibrahim Khalil
Remote points-of-care has recently had a lot of attention for their advantages such as saving lives and cost reduction. The transmitted streams usually contain (1) normal biomedical signals (e.g. ECG) and (2) highly private information (e.g. patient identity). Despite the obvious advantages, the primary concerns are privacy and authenticity of the transferred data. Therefore, this paper introduces a novel steganographic mechanism that ensures (1) strong privacy preservation of private information by random concealing inside the transferred signals employing a key, and (2) evidence of originality for the biomedical signals...
November 29, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/27911966/point-of-care-ultrasound-in-internal-medicine-challenges-and-opportunities-for-expanding-use
#17
John Kugler
No abstract text is available yet for this article.
December 2016: Southern Medical Journal
https://www.readbyqxmd.com/read/27911908/uptake-of-community-based-peer-administered-hiv-point-of-care-testing-findings-from-the-proud-study
#18
Lisa Lazarus, Sheetal Patel, Ashley Shaw, Sean Leblanc, Christine Lalonde, Manisha Hladio, Kira Mandryk, Cynthia Horvath, William Petrcich, Claire Kendall, Mark W Tyndall
OBJECTIVES: HIV prevalence among people who inject drugs (PWID) in Ottawa is estimated at about 10%. The successful integration of peers into outreach efforts and wider access to HIV point-of-care testing (POCT) create opportunities to explore the role of peers in providing HIV testing. The PROUD study, in partnership with Ottawa Public Health (OPH), sought to develop a model for community-based peer-administered HIV POCT. METHODS: PROUD draws on community-based participatory research methods to better understand the HIV risk environment of people who use drugs in Ottawa...
2016: PloS One
https://www.readbyqxmd.com/read/27910720/the-management-of-infection-with-mycobacterium-tuberculosis-in-young-children-post-2015-an-opportunity-to-close-the-policy-practice-gap
#19
Stephen M Graham
The treatment of infection with Mycobacterium tuberculosis in young children is supported by universal policy based on strong rationale and evidence of effectiveness, but has rarely been implemented in tuberculosis endemic countries. Areas covered: This review highlights a number of important recent developments that provide an unprecedented opportunity to close the policy-practice gap, as well as ongoing needs to facilitate implementation under programmatic conditions and scale-up. Expert commentary: The WHO's End TB Strategy and Stop TB Partnership's Plan to End TB provide ambitious targets for prevention at a time when National Tuberculosis Programs in tuberculosis endemic countries are increasing attention to the challenges of management and prevention of tuberculosis disease in children...
December 2, 2016: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/27907937/tranexamic-acid-for-trauma-resuscitation-in-the-united-states-of-america
#20
Mark Walsh, Scott Thomas, Ernest Moore, Hunter Moore, Andres Piscoya, Daniel Hake, Michael Son, Tim Pohlman, Julie Wegner, John Bryant, Alberto Grassetto, Patrick Davis, Nathan Nielsen, Anton Crepinsek, Jacob T Shreve, Francis Castellino
The utilization of tranexamic acid (TXA) for the management of bleeding trauma patients has been a subject of much debate on both sides of the Atlantic and in Australia. As a result of the large randomized controlled study called the Clinical Randomization of an Antifibrinolytic in Severe Hemorrhage (CRASH-2), there was an initial enthusiasm for the use of TXA to treat bleeding patients. However, the adoption of TXA in the United States was delayed by concerns of "knowledge and evidence gaps" of the CRASH-2 study and because of a lack of mechanistic rationale that would explain the survival benefit noted in the study...
December 1, 2016: Seminars in Thrombosis and Hemostasis
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