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Raynaud's

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https://www.readbyqxmd.com/read/28069166/evaluation-and-prevention-of-the-negative-matrix-effect-of-terpenoids-on-pesticides-in-apples-quantification-by-gas-chromatography-tandem-mass-spectrometry
#1
Géraldine Giacinti, Christine Raynaud, Sophie Capblancq, Valérie Simon
The sample matrix can enhance the gas chromatography signal of pesticide residues relative to that obtained with the same concentration of pesticide in solvent. This paper is related to negative matrix effects observed in coupled gas chromatography-mass spectrometry ion trap (GC/MS(2)) quantification of pesticides in concentrated extracts of apple peel prepared by the Quick Easy Cheap Effective Rugged and Safe (QuEChERS) method. It is focused on the pesticides most frequently used on the apple varieties studied, throughout the crop cycle, right up to harvest, to combat pests and diseases and to improve fruit storage properties...
December 21, 2016: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28065485/systemic-sclerosis-sine-scleroderma-in-mexican-patients-case-reports
#2
Olga Vera-Lastra, Christian Alexis Sauceda-Casas, María Del Pilar Cruz Domínguez, Sergio Alberto Mendoza Alvarez, Jesús Sepulceda-Delgado
: Systemic sclerosis sine scleroderma (ssSSc) is a form of systemic sclerosis that is characterized by Raynaud's phenomenon (RP), visceral involvement without thickening of skin and anticentromere antibodies (ACA). We studied 10 ssSsc patients with a prevalence of 2%. The clinical signs were: RP 9/10, esophageal manifestations 8/10, pulmonary arterial hypertension 4/10, interstitial lung disease 4/10, cardiac signs 3/10 and ACA 8/10. CONCLUSION: In patients with RP, esophageal dysmotility, interstitial lung disease and pulmonary arterial hypertension should be tested for ACA in order to establish a prompt diagnosis and treatment of ssSSc...
January 3, 2017: Reumatología Clinica
https://www.readbyqxmd.com/read/28053878/microparticle-subpopulations-are-potential-markers-of-disease-progression-and-vascular-dysfunction-across-a-spectrum-of-connective-tissue-disease
#3
E M McCarthy, D Moreno-Martinez, F L Wilkinson, N J McHugh, I N Bruce, J D Pauling, M Y Alexander, B Parker
OBJECTIVE: Microparticles (MPs) are membrane-bound vesicles derived from vascular and intravascular cells such as endothelial cells (EMPs) and platelets (PMPs). We investigated EMP and PMP numbers across a spectrum of autoimmune rheumatic diseases (AIRDs) with the aim of comparing the levels of, and relationship between, EMPs and PMPs. METHODS: Patients with Systemic Lupus Erythematosus (SLE) (n = 24), Systemic Sclerosis (SSc) (n = 24), Primary Raynauds Phenomenon (RP) (n = 17) and "other CTD" (n = 15) (Primary Sjogrens Syndrome, UCTD or MCTD) as well as 15 healthy controls were recruited...
June 2017: BBA Clinical
https://www.readbyqxmd.com/read/28053559/systemic-lupus-erythematosus-and-pulmonary-arterial-hypertension-links-risks-and-management-strategies
#4
REVIEW
Konstantinos Tselios, Dafna D Gladman, Murray B Urowitz
Systemic lupus erythematosus (SLE) is characterized by the second highest prevalence of pulmonary arterial hypertension (PAH), after systemic sclerosis, among the connective tissue diseases. SLE-associated PAH is hemodynamically defined by increased mean pulmonary artery pressure at rest (≥25 mmHg) with normal pulmonary capillary wedge pressure (≤15 mmHg) and increased pulmonary vascular resistance. Estimated prevalence ranges from 0.5% to 17.5% depending on the diagnostic method used and the threshold of right ventricular systolic pressure in studies using transthoracic echocardiogram...
2017: Open Access Rheumatology: Research and Reviews
https://www.readbyqxmd.com/read/28029677/an-interesting-case-of-basal-cell-carcinoma-with-raynaud-s-phenomenon-following-chronic-arsenic-exposure
#5
S Gulshan, M J Rahman, R Sarkar, S Ghosh, R Hazra
Arsenic is commonly known to be associated with squamous cell carcinoma. Among the lesser known associations is basal cell carcinoma and even rarer is its effect on blood vessels causing peripheral vascular disease. Here we present a case of a 55 yr old man with ulceroproliferative lesions on scalp and forehead along with several hyperpigmented patches on trunk and extremities. He had symptoms suggestive of Raynaud's phenomenon that eventually led to digital gangrene. FNAC was done which was suggestive of basal cell carcinoma...
October 2016: JNMA; Journal of the Nepal Medical Association
https://www.readbyqxmd.com/read/28024309/stroke-as-initial-manifestation-of-adenosine-deaminase-2-deficiency
#6
Miriam Elbracht, Michael Mull, Norbert Wagner, Christiane Kuhl, Angela Abicht, Ingo Kurth, Klaus Tenbrock, Martin Häusler
Deficiency of adenosine deaminase 2 (ADA2) due to homozygous or compound heterozygous mutations in the cat eye syndrome chromosome region, candidate 1 (CECR1) gene causes an autoimmune phenotype with systemic vasculitis affecting the skin, inner organs, and the central nervous system. Typically, stroke has been reported to follow systemic inflammatory disease and predominantly affects posterior and central brain areas. Here, we describe one of the rare patients in whom acute mesencephalic stroke preceded systemic inflammation and presented as initial clinical symptom...
December 26, 2016: Neuropediatrics
https://www.readbyqxmd.com/read/28018840/hand-impairment-in-systemic-sclerosis-various-manifestations-and-currently-available-treatment
#7
Amber Young, Rajaie Namas, Carole Dodge, Dinesh Khanna
Systemic sclerosis (SSc) is an autoimmune disease initially recognized by hand involvement due to characteristic Raynaud's phenomenon (RP), puffy hands, skin thickening, and contractures resembling claw deformities. SSc contributes to hand impairment through inflammatory arthritis, joint contractures, tendon friction rubs (TFRs), RP, digital ulcers (DU), puffy hands, skin sclerosis, acro-osteolysis, and calcinosis. These manifestations, which often co-exist, can contribute to difficulty with occupational activities and activities of daily living (ADL), which can result in impaired quality of life...
September 2016: Current Treatment Options in Rheumatology
https://www.readbyqxmd.com/read/28017447/association-between-cachexia-chemotherapy-and-outcomes-in-older-cancer-patients-a-systematic-review
#8
REVIEW
Philippe Caillet, Evelyne Liuu, Agathe Raynaud Simon, Marc Bonnefoy, Olivier Guerin, Gilles Berrut, Bruno Lesourd, Claude Jeandel, Monique Ferry, Yves Rolland, Elena Paillaud
BACKGROUND & AIMS: The aims of this systematic review were (i) to determine the prevalence of malnutrition and cachexia in older cancer patients in a chemotherapy setting, and (ii) to report the chemotherapy-related causes of malnutrition and (iii) the consequences of malnutrition on the outcomes of these patients. METHODS: We searched MEDLINE for articles published in English or French between 2005 and 2016 and which reported retrospective or prospective, observational or interventional studies of the prevalence of malnutrition and its consequences in patients 65 years or older with solid tumors and chemotherapy-related causes of malnutrition...
December 18, 2016: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28004573/discovery-of-a-chemical-probe-bisamide-cct251236-an-orally-bioavailable-efficacious-pirin-ligand-from-a-heat-shock-transcription-factor-1-hsf1-phenotypic-screen
#9
Matthew D Cheeseman, Nicola E A Chessum, Carl S Rye, A Elisa Pasqua, Michael J Tucker, Birgit Wilding, Lindsay E Evans, Susan Lepri, Meirion Richards, Swee Y Sharp, Salyha Ali, Martin Rowlands, Lisa O'Fee, Asadh Miah, Angela Hayes, Alan T Henley, Marissa Powers, Robert Te Poele, Emmanuel De Billy, Loredana Pellegrino, Florence Raynaud, Rosemary Burke, Rob L M van Montfort, Suzanne A Eccles, Paul Workman, Keith Jones
Phenotypic screens, which focus on measuring and quantifying discrete cellular changes rather than affinity for individual recombinant proteins, have recently attracted renewed interest as an efficient strategy for drug discovery. In this article, we describe the discovery of a new chemical probe, bisamide (CCT251236), identified using an unbiased phenotypic screen to detect inhibitors of the HSF1 stress pathway. The chemical probe is orally bioavailable and displays efficacy in a human ovarian carcinoma xenograft model...
December 22, 2016: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28003585/cold-stimulation-evokes-exocytotic-vesicle-release-from-pc12-cells
#10
Ryoichi Yoshimura, Misaki Nakagawa, Yasuhisa Endo
The mechanism of peripheral blood circulation failure by low temperatures, known as Raynaud's phenomenon, is not well understood at present. We examined the possibility that the efferent fibers of peripheral sympathetic neurons may release transmitters directly by cold sensation. PC12 cells, a culture model of sympathetic neurons, were placed at 25°C for 30 min, fixed with the tannic acid-glutaraldehyde-osmium method and observed by electron microscopy. The number of omega-shaped exocytotic vesicle figures increased significantly compared with that in the control (37°C), although it was lower than that of the positive control (high potassium stimulation at 25°C and 37°C)...
2016: Biomedical Research
https://www.readbyqxmd.com/read/27998297/difficulties-in-diagnosis-and-treatment-of-severe-secondary-raynaud-s-phenomenon-in-a-cameroonian-woman-a-case-report
#11
Valirie Ndip Agbor, Tsi Njim, Leopold Ndemnge Aminde
BACKGROUND: Raynaud's phenomenon is a microvascular disorder that results in exaggerated vasoconstriction over vasodilatation secondary to an alteration in autonomic control. Though benign, it can result in severe ulceration and ultimately gangrene associated with disfiguration and permanent deformity. We present a case of severe secondary Raynaud's phenomenon in a black-African patient from a resource-limited setting, with focus on the difficulties encountered in the diagnosis and treatment...
December 20, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27996340/geographic-variation-as-a-risk-factor-for-digital-ulcers-in-systemic-sclerosis-patients-a-multicentre-registry
#12
Ejr Souza, C S Muller, Amc Horimoto, R A Rezende, I Guimarães, H A Mariz, A T Dantas, I P Da Costa, Apt Del-Rio, J Sekiyama, C B Kahwage, C Kayser
OBJECTIVE: To evaluate the influence of geographic variation on the risk of digital ulcer (DU) development in systemic sclerosis (SSc) patients. METHODS: This cross-sectional, multicentre study evaluated patients with SSc from centres located in different geographic regions of Brazil (subtropical and tropical climate zones). Demographic and clinical data were collected. RESULTS: The study included 141 patients with SSc (26 from the subtropical and 115 from the tropical zone)...
December 20, 2016: Scandinavian Journal of Rheumatology
https://www.readbyqxmd.com/read/27987518/-clinical-characteristics-of-4-cases-of-scleritis-associated-with-systemic-lupus-erythematosus
#13
L Wang, Y Yang, Y Jia, H Miao, Y S Zhou, X Y Zhang
Episcleritis and scleritis are relatively rare ocular diseases, which are commonly associated with rheumatic diseases including systemic lupus erythematosus (SLE). To investigate clinical and laboratory features of SLE-associated episcleritis and scleritis, we now report 4 cases of inpatients who were diagnosed with episcleritis or scleritis secondary to SLE from September 2005 to July 2016 in the Department of Rheumatology and Immunology in Peking University People's Hospital. Demographic, clinical and laboratory characteristics were summarized together with the treatment regimen and the prognosis; the literature was reviewed...
December 18, 2016: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/27982127/tuning-magnetic-spirals-beyond-room-temperature-with-chemical-disorder
#14
Mickaël Morin, Emmanuel Canévet, Adrien Raynaud, Marek Bartkowiak, Denis Sheptyakov, Voraksmy Ban, Michel Kenzelmann, Ekaterina Pomjakushina, Kazimierz Conder, Marisa Medarde
In the past years, magnetism-driven ferroelectricity and gigantic magnetoelectric effects have been reported for a number of frustrated magnets featuring ordered spiral magnetic phases. Such materials are of high-current interest due to their potential for spintronics and low-power magnetoelectric devices. However, their low-magnetic ordering temperatures (typically <100 K) greatly restrict their fields of application. Here we demonstrate that the onset temperature of the spiral phase in the perovskite YBaCuFeO5 can be increased by more than 150 K through a controlled manipulation of the Fe/Cu chemical disorder...
December 16, 2016: Nature Communications
https://www.readbyqxmd.com/read/27979657/undifferentiated-connective-tissue-disease-and-interstitial-lung-disease-trying-to-define-patterns
#15
María Laura Alberti, Francisco Paulin, Heidegger Mateos Toledo, Martín Eduardo Fernández, Fabián Matías Caro, Jorge Rojas-Serrano, Mayra Edith Mejía
OBJECTIVES: To identify clinical or immunological features in patients with undifferentiated connective tissue disease (UCTD) associated interstitial lung disease (ILD), in order to group them and recognize different functional and high resolution computed tomography (HRCT) behavior. METHODS: Retrospective cohort study. Patients meeting Kinder criteria for UCTD were included. We defined the following predictive variables: 'highly specific' connective tissue disease (CTD) manifestations (Raynaud's phenomenon, dry eyes or arthritis), high antinuclear antibody (ANA) titer (above 1: 320), and 'specific' ANA staining patterns (centromere, cytoplasmic and nucleolar patterns)...
December 12, 2016: Reumatología Clinica
https://www.readbyqxmd.com/read/27969247/validation-d%C3%A2-un-nouveau-mod%C3%A3-le-de-classification-histologique-du-cancer-de-prostate
#16
A Pichon, Y Neuzillet, H Slaoui, C Radulescu, V Molinié, J Raynaud, H Botto, T Lebret
No abstract text is available yet for this article.
November 2016: Progrès en Urologie
https://www.readbyqxmd.com/read/27959516/interlaboratory-reproducibility-of-a-targeted-metabolomics-platform-for-analysis-of-human-serum-and-plasma
#17
Alexandros P Siskos, Pooja Jain, Werner Römisch-Margl, Mark Bennett, David Achaintre, Yasmin Asad, Luke Marney, Larissa Richardson, Albert Koulman, Julian L Griffin, Florence Raynaud, Augustin Scalbert, Jerzy Adamski, Cornelia Prehn, Hector C Keun
A critical question facing the field of metabolomics is whether data obtained from different centers can be effectively compared and combined. An important aspect of this is the interlaboratory precision (reproducibility) of the analytical protocols used. We analyzed human samples in six laboratories using different instrumentation but a common protocol (the AbsoluteIDQ p180 kit) for the measurement of 189 metabolites via liquid chromatography (LC) or flow injection analysis (FIA) coupled to tandem mass spectrometry (MS/MS)...
December 13, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/27935476/assessing-the-mechanism-and-therapeutic-potential-of-modulators-of-the-human-mediator-complex-associated-protein-kinases
#18
Paul Andrew Clarke, Maria-Jesus Ortiz-Ruiz, Robert TePoele, Olajumoke Adeniji-Popoola, Gary Box, Will Court, Stefanie Czasch, Samer El Bawab, Christina Esdar, Ken Ewan, Sharon Gowan, Alexis De Haven Brandon, Phllip Hewitt, Stephen M Hobbs, Wolfgang Kaufmann, Aurélie Mallinger, Florence Raynaud, Toby Roe, Felix Rohdich, Kai Schiemann, Stephanie Simon, Richard Schneider, Melanie Valenti, Stefan Weigt, Julian Blagg, Andree Blaukat, Trevor C Dale, Suzanne A Eccles, Stefan Hecht, Klaus Urbahns, Paul Workman, Dirk Wienke
Mediator-associated kinases CDK8/19 are context-dependent drivers or suppressors of tumorigenesis. Their inhibition is predicted to have pleiotropic effects, but it is unclear whether this will impact on the clinical utility of CDK8/19 inhibitors. We discovered two series of potent chemical probes with high selectivity for CDK8/19. Despite pharmacodynamic evidence for robust on-target activity, the compounds exhibited modest, though significant, efficacy against human tumor lines and patient-derived xenografts...
December 9, 2016: ELife
https://www.readbyqxmd.com/read/27931961/imaging-of-connective-tissue-diseases-beyond-visceral-organ-imaging
#19
REVIEW
Maurizio Cutolo, Nemanja Damjanov, Barbara Ruaro, Ana Zekovic, Vanessa Smith
Connective tissues diseases (CTDs) can also be diagnosed early by "external" and safe imaging methods beyond the visceral organ analysis. This study aims to explore various imaging techniques used in diagnosing CTDs. Skin impairment in systemic sclerosis (SSc) may be recognized and studied by the modified Rodnan skin score (mRSS), which has some drawbacks, whereas high-frequency ultrasound (US) seems advantageous for the early identification of skin involvement. Salivary gland involvement in Sjögren syndrome (SS) can be assessed using standard tests such as unstimulated salivary flow test, salivary gland scintigraphy or contrast sialography...
August 2016: Best Practice & Research. Clinical Rheumatology
https://www.readbyqxmd.com/read/27917635/-raynaud-s-phenomenon
#20
Michal Tomčík
Raynaud's phenomenon (RP) is a very common sign which can usually be seen across all medical specialties. It is characterized by episodic color changes of acral parts of the body (palor, cyanosis, rubor) lasting from a few minutes to hours, which are usually triggered by cold temperature and/or stress. The primary RP occurs alone, without concomitant diseases, is usually benign and has favorable prognosis. Secondary RP occurs in a variety of diseases with a very variable progression and prognosis, mostly unfavorable one due to the development of ischemic tissue necrosis and gangrene...
2016: Casopís Lékar̆ů C̆eských
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