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Component resolved diagnostics

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https://www.readbyqxmd.com/read/28890861/idiopathic-anaphylaxis
#1
REVIEW
Bright I Nwaru, Sangeeta Dhami, Aziz Sheikh
Idiopathic anaphylaxis is a rare life-threatening disorder with symptoms similar to other forms of anaphylaxis. There is lack of a robust evidence base underpinning the treatment of anaphylaxis and even less so for idiopathic anaphylaxis. Much of the evidence therefore comes from relatively small case series and expert opinion. Idiopathic anaphylaxis is a diagnosis of exclusion, requiring a thorough history and careful diagnostic work-up investigating possible triggers and underlying predisposing factors. Key diagnostic tests include skin-prick testing, tests for specific-IgE, component-resolved diagnostics, and in some cases for allergen challenge tests...
2017: Current Treatment Options in Allergy
https://www.readbyqxmd.com/read/28890490/time-and-space-resolved-optical-diagnostics-for-discharge-plasmas-separately-formed-in-aqueous-solution
#2
Motohiro Banno, Hotaka Takakuwa, Hiroharu Yui
When high voltage is applied to a gap between electrodes in aqueous solution, a discharge plasma is generated that connects the edges of the facing electrodes. When the width of the gap between the electrodes is extended to more than several millimeters, the plasma is separated into two and they are localized at the vicinities of the edges of the anode (+plasma) and cathode (-plasma). Although they are expected to supply characteristic reaction fields, the properties of the plasmas, such as electron number density and temperatures of transient species, have not yet been clarified...
2017: Analytical Sciences: the International Journal of the Japan Society for Analytical Chemistry
https://www.readbyqxmd.com/read/28791829/intravitreal-ocriplasmin-a-breakthrough-in-the-treatment-of-vitreomacular-traction
#3
REVIEW
Anna E Mec-Słomska, Joanna Adamiec-Mroczek, Ewa Kuźmicz, Marta Misiuk-Hojło
Vitreoretinal interface pathologies, such as vitreomacular traction syndrome, epiretinal membranes and macular holes are sight-threatening conditions and one of the important causes of vision defects and vision loss. To this date, vigilance with observation of how the vitreomacular traction resolves, or vitreoretinal surgery in more severe cases, were the only treatment options. Recent rapid progress in ophthalmology, especially in diagnostic and visualization techniques, provided better insight into the mechanisms taking place on the vitreoretinal surface, which enabled a more accurate selection of treatment options...
May 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28759475/component-resolved-diagnostics-for-hymenoptera-venom-allergy
#4
Thilo Jakob, Ulrich Müller, Arthur Helbling, Edzard Spillner
PURPOSE OF REVIEW: Component-resolved diagnostics makes use of defined allergen molecules to analyse IgE-mediated sensitizations at a molecular level. Here, we review recent studies on the use of component-resolved diagnostics in the field of Hymenoptera venom allergy (HVA) and discuss its benefits and limitations. RECENT FINDINGS: Component resolution in HVA has moved from single molecules to panels of allergens. Detection of specific immunoglobulin E (sIgE) to marker and cross-reactive venom allergens has been reported to facilitate the discrimination between primary sensitization and cross-reactivity and thus, to provide a better rationale for prescribing venom immunotherapy (VIT), particularly in patients sensitized to both honeybee and vespid venom...
October 2017: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28757143/methods-in-allergy-immunology-food-challenges
#5
EDITORIAL
Barbara K Ballmer-Weber, Kirsten Beyer
Since there is no in vitro test, which can accurately predict the clinical relevance of a sensitization to food, the oral food challenge still remains the most reliable procedure to confirm or exclude food allergy and to assess the development of tolerance in children with potentially transient food allergies such as to cow's milk, hen's egg, wheat or soy. Although in the last few years component-resolved diagnostic has improved the food allergy diagnostics, especially in peanut and tree nut allergy, the majority of patients still need to undergo oral food challenge...
July 27, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28663879/fluorescence-lifetime-microscopy-of-nadh-distinguishes-alterations-in-cerebral-metabolism-in-vivo
#6
Mohammad A Yaseen, Jason Sutin, Weicheng Wu, Buyin Fu, Hana Uhlirova, Anna Devor, David A Boas, Sava Sakadžić
Evaluating cerebral energy metabolism at microscopic resolution is important for comprehensively understanding healthy brain function and its pathological alterations. Here, we resolve specific alterations in cerebral metabolism in vivo in Sprague Dawley rats utilizing minimally-invasive 2-photon fluorescence lifetime imaging (2P-FLIM) measurements of reduced nicotinamide adenine dinucleotide (NADH) fluorescence. Time-resolved fluorescence lifetime measurements enable distinction of different components contributing to NADH autofluorescence...
May 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28623421/comparison-of-dual-energy-ct-ultrasound-and-surface-measurement-for-assessing-tophus-dissolution-during-rapid-urate-debulking
#7
Dodji V Modjinou, Svetlana Krasnokutsky, Soterios Gyftopoulos, Virginia C Pike, Elaine Karis, Robert T Keenan, Kristen Lee, Daria B Crittenden, Jonathan Samuels, Michael H Pillinger
Tophaceous gout is painful and impairs quality of life. The optimal modality for assessing tophus resolution in response to urate-lowering treatment remains poorly defined. Using pegloticase as a model system for resolving tophi, we compared multiple imaging and physical diagnostic strategies for assessing tophus resolution. A 32-year-old subject with chronic refractory tophaceous gout was enrolled and received 6 months of pegloticase treatment. Measurements of tophi using vernier calipers (monthly), photographs and musculoskeletal ultrasound (MSK-US; every 3 months), and dual-energy CT (DECT) were compared...
June 16, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28616774/-molecular-component-resolved-allergy-diagnostics-in-ent
#8
REVIEW
L Klimek, S Becker
Molecular component-resolved diagnostics (CRD) are, in addition to its research applications, being increasingly used in daily allergological routine. CRD offers improved diagnostic accuracy via a better understanding of the underlying allergen causing symptoms and helps to distinguish between true sensitization and cross reactions in polysensitized patients, thereby providing an approach for individual personalized therapy. Particularly in food allergies and anaphylaxis, CRD can stratify risks for the recurrence of reactions and their severity...
June 14, 2017: HNO
https://www.readbyqxmd.com/read/28605372/a-component-resolved-diagnostic-approach-for-a-study-on-grass-pollen-allergens-in-chinese-southerners-with-allergic-rhinitis-and-or-asthma
#9
Wenting Luo, Guichang Pan, Huimin Huang, Peiyan Zheng, Nili Wei, Yifei Zhang, Guangqiao Zeng, Baoqing Sun
Sensitization to grass pollen imposes a global risk for allergic airway diseases. Although prevention relies on local investigation of the pollen allergens, data on this topic are limited in southern China. Any available data were obtained by self-report questionnaires, skin prick tests, and total or specific IgE tests using crude extracts. For many reasons, these methods are unreliable. Serum sIgE reactivity to Bermuda grass, Timothy grass, and Humulus scandens allergens in a cohort of patients from Greater Guangzhou (southern China's largest city and its outskirts) with allergic rhinitis and/or asthma were examined using a fully-automated immunoassay analyzer as a component-resolved diagnostics (CRD) tool...
June 4, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28604163/allergen-specific-immunotherapy-of-hymenoptera-venom-allergy-also-a-matter-of-diagnosis
#10
Maximilian Schiener, Anke Graessel, Markus Ollert, Carsten B Schmidt-Weber, Simon Blank
Stings of hymenoptera can induce IgE-mediated hypersensitivity reactions in venom-allergic patients, ranging from local up to severe systemic reactions and even fatal anaphylaxis. Allergic patients' quality of life can be mainly improved by altering their immune response to tolerate the venoms by injecting increasing venom doses over years. This venom-specific immunotherapy is highly effective and well tolerated. However, component-resolved information about the venoms has increased in the last years. This knowledge is not only able to improve diagnostics as basis for an accurate therapy, but was additionally used to create tools which enable the analysis of therapeutic venom extracts on a molecular level...
June 12, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28501976/component-resolved-diagnosis-in-hymenoptera-anaphylaxis
#11
REVIEW
D Tomsitz, K Brockow
PURPOSE OF REVIEW: Hymenoptera anaphylaxis is one of the leading causes of severe allergic reactions and can be fatal. Venom-specific immunotherapy (VIT) can prevent a life-threatening reaction; however, confirmation of an allergy to a Hymenoptera venom is a prerequisite before starting such a treatment. Component resolved diagnostics (CRD) have helped to better identify the responsible allergen. RECENT FINDINGS: Many new insect venom allergens have been identified within the last few years...
June 2017: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/28490893/sesame-allergy-current-perspectives
#12
REVIEW
Adil Adatia, Ann Elaine Clarke, Yarden Yanishevsky, Moshe Ben-Shoshan
Sesame is an important global allergen affecting ~0.1% of the North American population. It is a major cause of anaphylaxis in the Middle East and is the third most common food allergen in Israel. We conducted a systematic review of original articles published in the last 10 years regarding the diagnosis and management of sesame allergy. Skin prick testing appears to be a useful predictor of sesame allergy in infants, although data are less consistent in older children and adults. The diagnostic capacity of serum-specific immunoglobulin E is poor, especially in studies that used oral food challenges to confirm the diagnosis...
2017: Journal of Asthma and Allergy
https://www.readbyqxmd.com/read/28489279/dipeptidyl-peptidase-dpp-4-inhibitors-and-glucagon-like-peptide-glp-1-analogues-for-prevention-or-delay-of-type-2-diabetes-mellitus-and-its-associated-complications-in-people-at-increased-risk-for-the-development-of-type-2-diabetes-mellitus
#13
REVIEW
Bianca Hemmingsen, David P Sonne, Maria-Inti Metzendorf, Bernd Richter
BACKGROUND: The projected rise in the incidence of type 2 diabetes mellitus (T2DM) could develop into a substantial health problem worldwide. Whether dipeptidyl-peptidase (DPP)-4 inhibitors or glucagon-like peptide (GLP)-1 analogues are able to prevent or delay T2DM and its associated complications in people at risk for the development of T2DM is unknown. OBJECTIVES: To assess the effects of DPP-4 inhibitors and GLP-1 analogues on the prevention or delay of T2DM and its associated complications in people with impaired glucose tolerance, impaired fasting blood glucose, moderately elevated glycosylated haemoglobin A1c (HbA1c) or any combination of these...
May 10, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28485877/diagnostic-precision-of-component-resolved-vs-extract-based-in-vitro-diagnosis-of-hymenoptera-venom-allergy-effects-on-clinical-management
#14
Florian Seyfarth, Diana Miguel, Sibylle Schliemann, Uta-Christina Hipler
BACKGROUND: The measurement of specific IgE (sIgE) antibodies plays a key role in the diagnosis of honeybee and wasp venom allergy. In recent years, component-resolved diagnosis (CRD) has been introduced, which allows for the measurement of sIgE antibodies against Api m 1, Ves v 1, Ves v 5, and Pol d 5, as well as cross-reactive carbohydrate determinants (CCDs). These tests are intended to help determine the clinical relevance of any given sensitization, especially in patients with dual sensitization...
May 2017: Journal der Deutschen Dermatologischen Gesellschaft, Journal of the German Society of Dermatology: JDDG
https://www.readbyqxmd.com/read/28429066/atmospheric-pressure-maldi-for-the-noninvasive-characterization-of-carbonaceous-ink-from-renaissance-documents
#15
Giuseppe Grasso, Marzia Calcagno, Alessandro Rapisarda, Roberta D'Agata, Giuseppe Spoto
The analytical methods that are usually applied to determine the compositions of inks from ancient manuscripts usually focus on inorganic components, as in the case of iron gall ink. In this work, we describe the use of atmospheric pressure/matrix-assisted laser desorption ionization-mass spectrometry (AP/MALDI-MS) as a spatially resolved analytical technique for the study of the organic carbonaceous components of inks used in handwritten parts of ancient books for the first time. Large polycyclic aromatic hydrocarbons (L-PAH) were identified in situ in the ink of XVII century handwritten documents...
April 21, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28428549/low-noise-time-resolved-optical-sensing-of-electromagnetic-pulses-from-petawatt-laser-matter-interactions
#16
T S Robinson, F Consoli, S Giltrap, S J Eardley, G S Hicks, E J Ditter, O Ettlinger, N H Stuart, M Notley, R De Angelis, Z Najmudin, R A Smith
We report on the development and deployment of an optical diagnostic for single-shot measurement of the electric-field components of electromagnetic pulses from high-intensity laser-matter interactions in a high-noise environment. The electro-optic Pockels effect in KDP crystals was used to measure transient electric fields using a geometry easily modifiable for magnetic field detection via Faraday rotation. Using dielectric sensors and an optical fibre-based readout ensures minimal field perturbations compared to conductive probes and greatly limits unwanted electrical pickup between probe and recording system...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28423454/uk-neqas-survey-of-allergen-component-testing-across-the-united-kingdom-and-other-european-countries
#17
R Saleem, C Keymer, D Patel, W Egner, A W Rowbottom
The clinical utility of molecular diagnostic approaches in allergy investigation is being recognized increasingly to play a significant role in the management of allergic patients. Determining the sensitization pattern, which is best achieved through the use of component resolved diagnostics (CRD), allows effective risk stratification, appropriate treatment and patient selection for immunotherapy. In order to assess the diagnostic service provisions for in-vitro allergy testing across Europe, a survey was carried out via the total immunoglobulin (Ig)E and specific IgE external quality assurance schemes run by UK National External Quality Assessment Service (NEQAS) Immunology, Immunochemistry and Allergy...
June 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28368217/long-acting-insulin-allergy-in-a-diabetic-child
#18
Carla Mastrorilli, Laura Rizzuti, Antonina Marta Cangelosi, Brunella Iovane, Giovanni Chiari, Carlo Caffarelli
Insulin allergy has been uncommon since the introduction of human recombinant insulin preparations; the prevalence is 2.4%. Insulin injection could elicit immediate reactions, which are usually induced by an IgE-mediated mechanism, within the first hour after drug administration. In the present study, we describe the case of a child who experienced immediate urticaria after long-acting insulin injection. A 9-year-old girl affected by type I diabetes mellitus referred a history of three episodes of urticaria 30 min after insulin subcutaneous injection...
April 1, 2017: International Journal of Immunopathology and Pharmacology
https://www.readbyqxmd.com/read/28364406/component-resolved-diagnostics-in-thai-children-with-cow-s-milk-and-egg-allergy
#19
Wipa Jessadapakorn, Pasuree Sangsupawanich, Natthakul Wootipoom, Oranart Suddeaugrai, Araya Yuenyongviwat
BACKGROUND AND OBJECTIVE: Component-resolved diagnostics (CRD) have garnered a lot of attention in recent years in the diagnosis of food allergies. We aimed to investigate sensitization against cow's milk and egg white components, and to study the clinical usefulness of serum food-specific immunoglobulin E (sIgE) to cow's milk and egg white components in Thai children with cow's milk and egg allergies. METHOD: Children with IgE-mediated cow's milk and/or egg allergy were enrolled...
April 1, 2017: Asian Pacific Journal of Allergy and Immunology
https://www.readbyqxmd.com/read/28351786/association-of-clinical-reactivity-with-sensitization-to-allergen-components-in-multifood-allergic-children
#20
Sandra Andorf, Magnus P Borres, Whitney Block, Dana Tupa, Jennifer B Bollyky, Vanitha Sampath, Arnon Elizur, Jonas Lidholm, Joseph E Jones, Stephen J Galli, Rebecca S Chinthrajah, Kari C Nadeau
BACKGROUND: Thirty percent of children with food allergies have multiple simultaneous allergies; however, the features of these multiple allergies are not well characterized serologically or clinically. OBJECTIVE: We comprehensively evaluated 60 multifood-allergic patients by measuring serum IgE to key allergen components, evaluating clinical histories and medication use, performing skin tests, and conducting double-blind, placebo-controlled food challenges (DBPCFCs)...
September 2017: Journal of Allergy and Clinical Immunology in Practice
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