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https://www.readbyqxmd.com/read/27914366/rapid-and-low-cost-biosensor-for-the-detection-of-staphylococcus-aureus
#1
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/27914161/streptococcus-agalactiae-native-valve-endocarditis-uncommon-presentation-of-multiple-myeloma
#2
Ana Pinho Oliveira, Anne Delgado, Cláudia Martins, Pedro Gama
Adults with chronic immunosuppressive conditions are at an increased risk for Streptococcus agalactiae endocarditis, which is typically characterized by acute onset, presence of large vegetations, rapid valvular destruction and frequent complications. We report a rare case of a 74 years old man presenting with fever, renal infarction, ischemic stroke and uveitis. Infective endocarditis was diagnosed and Streptococcus agalactiae was isolated in blood cultures. A multiple myeloma Ig G-K was also diagnosed. The infective endocarditis was successfully treated with a course of benzylpenicillin and gentamicin...
August 2016: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/27913889/ocular-pharmacology-of-tear-film-dry-eye-and-allergic-conjunctivitis
#3
Shilpa Gulati, Sandeep Jain
Dry Eye Disease (DED) is "a multifactorial disease of the tears and ocular surface that results in symptoms of discomfort, visual disturbance, and tear-film instability with potential damage to the ocular surface." DED comprises two etiologic categories: aqueous-deficient dry eye (ADDE) and evaporative dry eye (EDE). Diagnostic workup of DED should include clinical history, symptom questionnaire, fluorescein TBUT, ocular surface staining grading, Schirmer I/II, lid and meibomian pathology, meibomian expression, followed by other available tests...
December 3, 2016: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/27913485/congenital-and-acquired-bleeding-disorders-in-pregnancy
#4
Terry B Gernsheimer
Obstetrical hematology represents challenges not only for the patient, but also for her progeny. In particular, bleeding disorders, both congenital and acquired, not only present problems both for delivery and in the immediate postpartum period, but also may have significant implications for the fetus and neonate. Women with congenital bleeding disorders or who are carriers of X-linked or autosomal disorders should be counseled prior to conception so that pregnancy can be safely undertaken with careful preparation...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913043/evaluation-of-the-genexpert-mtb-rif-assay-on-extrapulmonary-and-respiratory-samples-other-than%C3%A2-sputum-a-low-burden-country-experience
#5
Sushil Pandey, Jacob Congdon, Bradley McInnes, Alina Pop, Christopher Coulter
The aim of this study was to assess the performance of the GeneXpert MTB/RIF assay on extrapulmonary (EP) and respiratory (non-sputum) clinical samples of patients suspected of having tuberculosis (TB) from Queensland, Australia. A total of 269 EP and respiratory (non-sputum) clinical samples collected from Qld patients who were suspected of having TB were subjected to the GeneXpert MTB/RIF analysis, Ziehl-Neelsen (ZN) staining, Mycobacterium tuberculosis (MTB) culture and drug susceptibility testing. Phenotypic and genotypic data were compared...
November 29, 2016: Pathology
https://www.readbyqxmd.com/read/27910681/tokamak-independent-software-analysis-suite-for-multi-spectral-line-polarization-mse-diagnostics
#6
S D Scott, R T Mumgaard
A tokamak-independent analysis suite has been developed to process data from Motional Stark Effect (mse) diagnostics. The software supports multi-spectral line-polarization mse diagnostics which simultaneously measure emission at the mse σ and π lines as well as at two "background" wavelengths that are displaced from the mse spectrum by a few nanometers. This analysis accurately estimates the amplitude of partially polarized background light at the σ and π wavelengths even in situations where the background light changes rapidly in time and space, a distinct improvement over traditional "time-interpolation" background estimation...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910355/plasma-diagnostics-in-spherical-tokamaks-with-silicon-charged-particle-detectors
#7
A Netepenko, W U Boeglin, D S Darrow, R Ellis, M J Sibilia
Detection of charged fusion products, such as protons and tritons resulting from D(d, p) t reactions, can be used to determine the position and time dependent fusion reaction rate profile in spherical tokamak plasmas with neutral beam heating. We have developed a prototype instrument consisting of 6 ion-implanted-silicon surface barrier detectors combined with collimators in such a way that each detector can accept 3 MeV protons and 1 MeV tritons and thus provides a curved view across the plasma cross section...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910028/recurrent-cytogenetic-abnormalities-in-myeloproliferative-neoplasms-and-chronic-myeloid-leukemia
#8
John Swansbury
The commonest types of myeloproliferative neoplasm (MPN) have remarkably similar recurrent chromosome abnormalities, but with varying incidence and prognostic implications. After a clear decade of treatment of chronic myeloid leukemia (CML) with tyrosine kinase inhibitors, the differing prognostic implications of abnormalities additional to the Ph chromosome are being revealed. This chapter provides a description of the main chromosome abnormalities in MPN and CML and their clinical implications in a time of rapid changes in both the application of new diagnostic techniques and the introduction of targeted therapies...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27908820/true-aneurysm-of-the-inferior-thyroid-artery-a-case-report-and-literature-review
#9
Luigi Venturini, Paolo Sapienza, Raffaele Grande, Valerio Scarano Catanzaro, Fabrizio Fanelli, Luca di Marzo
Aneurysms of the inferior thyroid artery (ITA) are extremely rare and potentially determine severe sequelae. We report a case of true ITA aneurysm in a 45-year old Caucasian woman treated with endovascular embolization; postoperative course was uneventful and, at 6-month follow-up, the aneurysm is completely thrombized. A systematic review of the literature has been also performed to identify the epidemiologic and clinical characteristics and diagnostic and operative options of this disease. Size alone is not able to predict the fate of the aneurysm and an aggressive treatment seems to be justified because of the high risk of complications in case of rupture...
November 28, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27908334/antimicrobial-stewardship-in-the-management-of-sepsis
#10
REVIEW
Michael S Pulia, Robert Redwood, Brian Sharp
Sepsis represents a unique clinical dilemma with regard to antimicrobial stewardship. The standard approach to suspected sepsis in the emergency department centers on fluid resuscitation and timely broad-spectrum antimicrobials. The lack of gold standard diagnostics and evolving definitions for sepsis introduce a significant degree of diagnostic uncertainty that may raise the potential for inappropriate antimicrobial prescribing. Intervention bundles that combine traditional quality improvement strategies with emerging electronic health record-based clinical decision support tools and rapid molecular diagnostics represent the most promising approach to enhancing antimicrobial stewardship in the management of suspected sepsis in the emergency department...
February 2017: Emergency Medicine Clinics of North America
https://www.readbyqxmd.com/read/27907878/ultrasound-in-cardiac-trauma
#11
Theodosios Saranteas, Andreas F Mavrogenis, Christina Mandila, John Poularas, Fotios Panou
In the perioperative period, the emergency department or the intensive care unit accurate assessment of variable chest pain requires meticulous knowledge, diagnostic skills, and suitable usage of various diagnostic modalities. In addition, in polytrauma patients, cardiac injury including aortic dissection, pulmonary embolism, acute myocardial infarction, and pericardial effusion should be immediately revealed and treated. In these patients, arrhythmias, mainly tachycardia, cardiac murmurs, or hypotension must alert physicians to suspect cardiovascular trauma, which would potentially be life threatening...
November 5, 2016: Journal of Critical Care
https://www.readbyqxmd.com/read/27905984/assessing-the-sensitivity-and-specificity-of-first-response-hiv-1-2-test-kit-with-whole-blood-and-serum-samples-a-cross-sectional-study
#12
Raymond Boadu, George Darko, Priscilla Nortey, Patricia Akweongo, Bismark Sarfo
BACKGROUND: Human immunodeficiency virus (HIV) Rapid diagnostic Test (RDT) kits are the preferred assays for HIV testing in many countries. Prevention of Mother-to-Child Transmission, Know Your Status Campaigns, Blood-Safety, Voluntary Counseling and Testing are major strategies adapted to control transmission of the virus and the pivot of these interventions is either screening or diagnosing individuals through testing. There are reports of inconsistent sensitivity and specificity with whole blood and serum samples collected from the same individual...
February 16, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27904884/escherichia-coli-sequence-type-131-h30-is-the-main-driver-of-emerging-extended-spectrum-%C3%AE-lactamase-producing-e-coli-at-a-tertiary-care-center
#13
James R Johnson, Brian Johnston, Paul Thuras, Bryn Launer, Evgeni V Sokurenko, Loren G Miller
The H30 strain of Escherichia coli sequence type 131 (ST131-H30) is a recently emerged, globally disseminated lineage associated with fluoroquinolone resistance and, via its H30Rx subclone, the CTX-M-15 extended-spectrum beta-lactamase (ESBL). Here, we studied the clonal background and resistance characteristics of 109 consecutive recent E. coli clinical isolates (2015) and 41 historical ESBL-producing E. coli blood isolates (2004 to 2011) from a public tertiary care center in California with a rising prevalence of ESBL-producing E...
November 2016: MSphere
https://www.readbyqxmd.com/read/27903962/targeted-proteomics-in-urinary-extracellular-vesicles-identifies-biomarkers-for-diagnosis-and-prognosis-of-prostate-cancer
#14
Tamara Sequeiros, Marina Rigau, Cristina Chiva, Melania Montes, Iolanda Garcia-Grau, Marta Garcia, Sherley Diaz, Ana Celma, Irene Bijnsdorp, Alex Campos, Primiano Di Mauro, Salvador Borrós, Jaume Reventós, Andreas Doll, Rosanna Paciucci, Michiel Pegtel, Inés de Torres, Eduard Sabidó, Juan Morote, Mireia Olivan
Rapid and reliable diagnosis of prostate cancer (PCa) is highly desirable as current used methods lack specificity. In addition, identification of PCa biomarkers that can classify patients into high- and low-risk groups for disease progression at early stage will improve treatment decision-making. Here, we describe a set of protein-combination panels in urinary extracellular vesicles (EVs), defined by targeted proteomics and immunoblotting techniques that improve early non-invasive detection and stratification of PCa patients...
November 26, 2016: Oncotarget
https://www.readbyqxmd.com/read/27903834/saliva-diagnostics-current-views-and-directions
#15
Karolina Elżbieta Kaczor-Urbanowicz, Carmen Martin Carreras-Presas, Katri Aro, Michael Tu, Franklin Garcia-Godoy, David Tw Wong
In this review, we provide an update on the current and future applications of saliva for diagnostic purposes. There are many advantages of using saliva as a biofluid. Its collection is fast, easy, inexpensive, and non-invasive. In addition, saliva, as a "mirror of the body," can reflect the physiological and pathological state of the body. Therefore, it serves as a diagnostic and monitoring tool in many fields of science such as medicine, dentistry, and pharmacotherapy. Introduced in 2008, the term "Salivaomics" aimed to highlight the rapid development of knowledge about various "omics" constituents of saliva, including: proteome, transcriptome, micro-RNA, metabolome, and microbiome...
November 29, 2016: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27903345/-application-of-low-dose-ct-angiography-with-70-kv-in-patients-with-peripheral-arterial-diseases
#16
Y H Duan, G M Lu, J Wu, X C Yang, D D Wu, Z P Cheng, X M Wang
Objective: To assess the image quality, radiation dose and diagnostic efficiency of peripheral arterial CT angiography (CTA) performed at tube voltage of 70 and 120 kV. Methods: Between January 2014 and December 2015, a total of 200 consecutive patients with known or suspected lower extremity arteriosclerosis obliterans (LEASO) underwent CTA.Patients were randomly divided into 2 groups by different scanning protocols.Group A (n=100): 70 kV and 0.8 ml/kg contrast agent, group B (n=100): 120 kV and 100 ml contrast agent...
November 22, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27902755/the-utility-of-malaria-rapid-diagnostic-tests-as-a-tool-in-enhanced-surveillance-for-malaria-elimination-in-vanuatu
#17
Wesley Donald, Cielo Pasay, Jean-Olivier Guintran, Harry Iata, Karen Anderson, Johnny Nausien, Karryn J Gresty, Norman C Waters, Lasse S Vestergaard, George Taleo, Qin Cheng
BACKGROUND: As part of efforts to eliminate malaria, Vanuatu has piloted the implementation of enhanced malaria surveillance and response strategies since 2011. This involves passive case detection (PCD) in health facilities, proactive case detection (Pro-ACD) and reactive case detection (Re-ACD) in communities using malaria rapid diagnostic tests (RDTs). While RDTs improve case management, their utility for detection of malaria infections in ACDs in this setting is unclear. METHODS: The utility of malaria RDTs as diagnostic tools was evaluated in PCD, in five rounds of Pro-ACDs and five rounds of Re-ACDs conducted in Tafea and Torba Provinces between 2011 and 2014...
2016: PloS One
https://www.readbyqxmd.com/read/27902424/clinical-evaluation-of-mucorales-specific-real-time-pcr-assay-in-tissue-and-serum-samples
#18
Jan Springer, Michaela Lackner, Christian Ensinger, Brigitte Risslegger, Charles Oliver Morton, David Nachbaur, Cornelia Lass-Flörl, Hermann Einsele, Werner J Heinz, Juergen Loeffler
Molecular diagnostic assays can accelerate the diagnosis of fungal infections and subsequently improve patient outcomes. In particular, the detection of infections due to Mucorales is still challenging for laboratories and physicians. The aim of this study was to evaluate a probe-based Mucorales-specific real-time PCR assay (Muc18S) using tissue and serum samples from patients suffering from invasive mucormycosis (IMM). This assay can detect a broad range of clinically relevant Mucorales species and can be used to complement existing diagnostic tests or to screen high-risk patients...
October 24, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27902406/mlvf-as-a-method-for-rapid-and-cost-effective-typing-of-animal-associated-staphylococcus-aureus-strains-from-lineages-other-than-st398
#19
Maja Kosecka-Strojek, Weronika M Ilczyszyn, Aneta Buda, Klaudia Polakowska, Krzysztof Murzyn, Tomasz Panz, Anna Bialecka, Andrzej Kasprowicz, Antoni Jakubczak, Jaroslaw Krol, Alina Wieliczko, Benedykt Wladyka, Jacek Miedzobrodzki
In veterinary medicine, Staphylococcus aureus is associated with a range of mild to severe infections. The high density of livestock in intensive farming systems increases the risk of disease spread and hampers its control and measures of prevention, making S. aureus one of the most important animal pathogens. Multiple-locus VNTR fingerprinting (MLVF) has been successfully applied to the characterization of livestock-associated methicillin-resistant Staphylococcus aureus (MRSA) ST398 but not to the characterization of a wide range of other animal isolates...
October 25, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27901647/a-decade-of-age-related-macular-degeneration-risk-models-what-have-we-learned-from-them-and-where-are-we-going
#20
Michael Zhang, Paul N Baird
The genomic revolution has revealed the complexity of multifactorial diseases, making the development of effective diagnostics extremely challenging. In turn, the prospect of precision medicine as applied through targeted therapeutic treatments continues to remain largely elusive. Age-related macular degeneration (AMD) as a complex disease falls under this category, despite it being one of the most well characterized multifactorial diseases. This reflects both the extent of identified genetic components and known environmental risk factors...
November 30, 2016: Ophthalmic Genetics
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