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https://www.readbyqxmd.com/read/28334117/a-generalized-association-test-based-on-u-statistics
#1
Changshuai Wei, Qing Lu
Motivation: Second generation sequencing technologies are being increasingly used for genetic association studies, where the main research interest is to identify sets of genetic variants that contribute to various phenotypes. The phenotype can be univariate disease status, multivariate responses and even high-dimensional outcomes. Considering the genotype and phenotype as two complex objects, this also poses a general statistical problem of testing association between complex objects...
February 17, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28268194/a-bioluminescent-caspase-1-activity-assay-rapidly-monitors-inflammasome-activation-in-cells
#2
Martha O'Brien, Danielle Moehring, Raúl Muñoz-Planillo, Gabriel Núñez, Justin Callaway, Jenny Ting, Mike Scurria, Tim Ugo, Laurent Bernad, James Cali, Dan Lazar
Inflammasomes are protein complexes induced by diverse inflammatory stimuli that activate caspase-1, resulting in the processing and release of cytokines, IL-1β and IL-18, and pyroptosis, an immunogenic form of cell death. To provide a homogeneous method for detecting caspase-1 activity, we developed a bioluminescent, plate-based assay that combines a substrate, Z-WEHD-aminoluciferin, with a thermostable luciferase in an optimized lytic reagent added directly to cultured cells. Assay specificity for caspase-1 is conferred by inclusion of a proteasome inhibitor in the lytic reagent and by use of a caspase-1 inhibitor to confirm activity...
March 4, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28259204/perioperative-self-reflection-among-surgical-residents
#3
Andi N Peshkepija, Marc D Basson, Alan T Davis, Muhammad Ali, Pam S Haan, Rama N Gupta, John C Hardaway, Cody A Nebeker, Michael K McLeod, Robert L Osmer, Cheryl I Anderson
BACKGROUND: We studied prevalence and predictors of meaningful self-reflection among surgical residents and with prompting/structured interventions, sought to improve/sustain resident skills. METHODS: Residents from six programs recorded 1032 narrative self-reflective comments (120 residents), using a web-based platform. If residents identified something learned or to be improved, self-reflection was deemed meaningful. Independent variables PGY level, resident/surgeon gender, study site/Phase1: July2014-August2015 vs...
December 23, 2016: American Journal of Surgery
https://www.readbyqxmd.com/read/28245880/pre-hospital-ct-diagnosis-of-subarachnoid-hemorrhage
#4
Maren Ranhoff Hov, Annette Ryen, Katrine Finsnes, Janne Storflor, Thomas Lindner, Jostein Gleditsch, Christian Georg Lund
BACKGROUND: Subarachnoid hemorrhage (SAH) is associated with higher mortality in the acute phase than other stroke types. There is a particular risk of early and devastating re-bleeding. Patients therefore need urgent assessment in a neurosurgical department, and the shorter the time from symptom onset to diagnosis the better. CASE PRESENTATION: The Norwegian Acute Stroke Pre-hospital Project (NASPP) has developed a Mobile Stroke Unit (MSU) model, which is staffed with anesthesiologists also trained in pre-hospital clinical assessment of acute stroke patients and interpretation of computerized tomography (CT)...
February 28, 2017: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
https://www.readbyqxmd.com/read/28240795/combining-hyperechoic-aggregates-and-the-double-contour-sign-increases-the-sensitivity-of-sonography-for-detection-of-monosodium-urate-deposits-in-gout
#5
Liang Zhu, Shengzhou Zheng, Wenwen Wang, Qijing Zhou, Huaxiang Wu
OBJECTIVES: To compare the sensitivities of individual and combined sonography of hyperechoic aggregates and the double-contour sign in detecting monosodium urate (MSU) crystal deposits in gouty joints. METHODS: Monosodium urate crystal deposits in symptomatic and contralateral asymptomatic joints of 70 patients with acute gout were evaluated by sonography of hyperechoic aggregates and the double-contour sign individually and in combination. All patients with acute gout in this study had at least 1 symptomatic joint with MSU deposits determined by dual-energy computed tomography...
February 27, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28229032/role-of-dual-energy-computed-tomography-imaging-in-the-diagnosis-of-gout
#6
REVIEW
Divya Jayakumar, Shiv T Sehra, Suneesh Anand, Gary W Stallings, Abhijeet Danve
Gout is a well-known inflammatory arthritis and affects four percent of the United States population. It results from the deposition of uric acid crystals in joints, tendons, bursae, and other surrounding tissues. Prevalence of gout has increased in the recent decade. Gout is usually seen in conjunction with other chronic comorbid conditions like cardiac disease, metabolic syndrome, and renal disease. The diagnosis of this inflammatory arthritis is confirmed by visualization of monosodium urate (MSU) crystals in the synovial fluid...
January 20, 2017: Curēus
https://www.readbyqxmd.com/read/28167912/c5a-regulates-il-1%C3%AE-production-and-leukocyte-recruitment-in-a-murine-model-of-monosodium-urate-crystal-induced-peritonitis
#7
Hanif J Khameneh, Adrian W S Ho, Federica Laudisi, Heidi Derks, Matheswaran Kandasamy, Baalasubramanian Sivasankar, Gim Gee Teng, Alessandra Mortellaro
Gouty arthritis results from the generation of monosodium urate (MSU) crystals within joints. These MSU crystals elicit acute inflammation characterized by massive infiltration of neutrophils and monocytes that are mobilized by the pro-inflammatory cytokine IL-1β. MSU crystals also activate the complement system, which regulates the inflammatory response; however, it is unclear whether or how MSU-mediated complement activation is linked to IL-1β release in vivo, and the various roles that might be played by individual components of the complement cascade...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28167401/an-extended-theory-of-planned-behavior-to-predict-consumers-willingness-to-buy-mobile-slaughter-unit-meat
#8
Djura L Hoeksma, Marien A Gerritzen, Anne Marike Lokhorst, P Marijn Poortvliet
The current study investigated the determinants of consumers' intention to purchase meat from mobile slaughter units (MSU). The theory of planned behavior (TPB) and the value belief norm theory (VBN) were used as conceptual lenses to guide this investigation. We conducted a survey among 329 respondents in the Netherlands who buy meat for themselves and/or for others. The results indicated that (1) TPB and VBN explain a high proportion of the variance in consumers' intention to buy MSU meat, and that (2) an extended TPB that includes peoples' attitude, personal norm, subjective norm, and perceived behavioral control turned out to be the best model to predict willingness to buy MSU meat...
February 1, 2017: Meat Science
https://www.readbyqxmd.com/read/28139201/do-female-surgeons-learn-or-teach-differently
#9
Cody A Nebeker, Marc D Basson, Pam S Haan, Alan T Davis, Muhammad Ali, Rama N Gupta, Robert L Osmer, John C Hardaway, Andi N Peshkepija, Michael K McLeod, Cheryl I Anderson
BACKGROUND: Gender and/or gender-stereotypes might influence surgical education. We hypothesized that female surgeons might focus their learning and teaching differently from male surgeons. METHODS: Residents and surgeons (multi-institutional) individually recorded preoperatively discussed learning objectives (LO) for matching cases. Narratives were classified as knowledge-based, skill-based, or attitude-based. Multinomial logistic regression analyses, LO = dependent variable; independent variables = resident/surgeon gender, PGY level, timing of entry-to-procedure date, and quarters-of-year...
February 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28115599/delta-neutrophil-index-contributes-to-the-differential-diagnosis-between-acute-gout-attack-and-cellulitis-within-24-hours-after-hospitalization
#10
Jung Yoon Pyo, You-Jung Ha, Jason Jungsik Song, Yong-Beom Park, Soo-Kon Lee, Sang-Won Lee
OBJECTIVE: An acute gout attack is often misdiagnosed as cellulitis. Differentiating these two diseases is crucial when deciding treatment strategies. Delta neutrophil index (DNI) represents the difference between leucocyte subfractions that corresponds to the fraction of immature granulocytes and can predict the bacterial infection burden. The aim of this study was to evaluate the potential of DNI as a predictive marker for differentiating an acute gout attack and cellulitis. METHODS: We reviewed medical records of 184 patients with an acute gout attack and 183 patients with lower limb cellulitis...
January 23, 2017: Rheumatology
https://www.readbyqxmd.com/read/28089200/limitations-of-the-current-standards-of-care-for-treating-gout-and-crystal-deposition-in-the-primary-care-setting-a-review
#11
Robert T Keenan
PURPOSE: This article outlines several important issues regarding the management of patients with gout. The topics discussed include best practices for gout based on the most current guidelines, opportunities for improving gout management, and current and emerging therapies for gout. METHODS: [PubMed and Google Scholar databases] were search for all articles and trials published before 2016, using the key terms [hyperuricemia, gout, tophi, joint erosion, joint damage, treatment guidelines, American College of Rheumatology (ACR), European League Against Rheumatism (EULAR), flare, comorbidity, epidemiology, adherence, serum uric acid (sUA), monosodium urate (MSU), <6 mg/dL, MSU crystal formation, as well as individual drug names and classes of treatments of interest (allopurinol, febuxostat, colchicine, non-steroidal anti-inflammatories (NSAIDs)]...
February 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28068647/berberine-an-isoquinoline-alkaloid-suppresses-txnip-mediated-nlrp3-inflammasome-activation-in-msu-crystal-stimulated-raw-264-7-macrophages-through-the-upregulation-of-nrf2-transcription-factor-and-alleviates-msu-crystal-induced-inflammation-in-rats
#12
Palani Dinesh, MahaboobKhan Rasool
The current study was designed to investigate the therapeutic potential of berberine on monosodium urate (MSU) crystal stimulated RAW 264.7 macrophages and in MSU crystal induced rats. Our results indicate that berberine (25, 50 and 75μM) suppressed the levels of pro-inflammatory cytokines (interleukin-1beta (IL-1β) and tumor necrosis factor alpha (TNFα)) and intracellular reactive oxygen species in MSU crystal stimulated RAW 264.7 macrophages. The mRNA expression levels of IL-1β, caspase 1, nucleotide-binding oligomerization domain-like receptor pyrin domain containing 3 (NLRP3), thioredoxin interacting protein (TXNIP) and kelch-like ECH-associated protein 1 (Keap1) were found downregulated with the upregulation of nuclear factor erythroid-2-related factor 2 (Nrf2) transcription factor and its associated anti-oxidant enzymes: Heme oxygenase I (HO-1), superoxide dismutase (SOD1), glutathione peroxidase (GPx), NADPH quinone oxidoreductase-1 (NQO1) and catalase (CAT) in MSU crystal stimulated RAW 264...
January 6, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28067087/oral-delivery-of-allopurinol-niosomes-in-treatment-of-gout-in-animal-model
#13
Neelu Singh, Poonam Parashar, Chandra Bhushan Tripathi, Jovita Kanoujia, Gaurav Kaithwas, Shubhini A Saraf
CONTEXT: Gout is a painful disorder which does not have an efficient delivery system for its treatment. OBJECTIVE: Development and in vitro, in vivo evaluation of allopurinol-loaded nonionic surfactant-based niosomes was envisaged. MATERIALS AND METHODS: Niosomes were prepared with Span 20 and Tween 20 (1:1 molar ratio) using ether injection method. The formulations were screened for entrapment efficiency, particle size analysis, zeta potential, release kinetics, in vivo activity, and stability studies...
February 1, 2017: Journal of Liposome Research
https://www.readbyqxmd.com/read/28062076/a-taxonomy-of-perioperative-surgical-learning-trending-resident-skill-acquisition
#14
John C Hardaway, Marc D Basson, Muhammad Ali, Alan T Davis, Pam S Haan, Rama N Gupta, Andi N Peshkepija, Cody A Nebeker, Michael K McLeod, Robert L Osmer, Cheryl I Anderson
BACKGROUND: Resident and curriculum evaluation require tracking surgical resident operative performance, yet what and when to measure remains unclear. METHODS: From a multi-institutional database, we reviewed 611 resident/surgeon-paired assessments of ACGME Milestones and modified OPRS ratings for different cases and postgraduate years. RESULTS: Faculty Milestone ratings increased with each PGY (p=<0.001) and correlated with resident self-ratings (ICC = 0...
February 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28054236/antibiotic-resistance-patterns-of-escherichia-coli-urinary-isolates-and-comparison-with-antibiotic-consumption-data-over-10%C3%A2-years-2005-2014
#15
P J Stapleton, D J Lundon, R McWade, N Scanlon, M M Hannan, F O'Kelly, M Lynch
INTRODUCTION: Escherichia coli is a common cause of urinary tract infections (UTI). Reviews of antibiotic resistance of this organism can inform choice of empiric treatment of UTI and other infections and strategies for combating antimicrobial resistance. We reviewed laboratory and hospital pharmacy records to assess trends in non-susceptibility rates and the effect of antimicrobial stewardship interventions. METHODS: A retrospective observational study of isolates of E...
January 4, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28039413/urat1-inhibition-by-alpk1-is-associated-with-uric-acid-homeostasis-alpk1-and-slc22a12-in-uric-acid-homeostasis
#16
Tzer-Min Kuo, Chung-Ming Huang, Hung-Pin Tu, Albert Min-Shan Ko, Shu-Jung Wang, Chi-Pin Lee, Ying-Chin Ko
OBJECTIVE: The aim of this study was to identify a protein for urate transporter 1 (URAT1) regulation. METHODS: The clinical dataset consisted of 492 case-control samples of Han Chinese (104 gout and 388 controls). Three alpha kinase 1 (ALPK1) and SLC22A12 loci associated with high gout risk and uric acid levels were genotyped. The overexpression of ALPK1 on URAT1 protein expression was evaluated in vivo in hALPK1 transgenic mice. The in vitro protein levels of ALPK1 and URAT1 in ALPK1 small interfering RNA-transfected human kidney-2 cells with MSU crystal stimulation were examined...
December 30, 2016: Rheumatology
https://www.readbyqxmd.com/read/27995621/annexin-a1-promotes-timely-resolution-of-inflammation-in-murine-gout
#17
Izabela Galvão, Juliana P Vago, Livia C Barroso, Luciana P Tavares, Celso M Queiroz-Junior, Vivian V Costa, Fernanda S Carneiro, Tatiana P Ferreira, Patricia M R Silva, Flávio A Amaral, Lirlândia P Sousa, Mauro M Teixeira
Gout is a self-limited inflammatory disease caused by deposition of monosodium urate (MSU) crystals in the joints. Resolution of inflammation is an active process leading to restoration of tissue homeostasis. Here, we studied the role of Annexin A1 (AnxA1), a glucocorticoid-regulated protein that has anti-inflammatory and proresolving actions, in resolution of acute gouty inflammation. Injection of MSU crystals in the knee joint of mice induced inflammation that was associated with expression of AnxA1 during the resolving phase of inflammation...
December 19, 2016: European Journal of Immunology
https://www.readbyqxmd.com/read/27934918/targeting-asc-in-nlrp3-inflammasome-by-caffeic-acid-phenethyl-ester-a-novel-strategy-to-treat-acute-gout
#18
Hye Eun Lee, Gabsik Yang, Nam Doo Kim, Seongkeun Jeong, Yunjin Jung, Jae Young Choi, Hyun Ho Park, Joo Young Lee
Gouty arthritis is caused by the deposition of uric acid crystals, which induce the activation of NOD-like receptor family, pyrin domain containing 3(NLRP3) inflammasome. The NLRP3 inflammasome, composed of NLRP3, the adaptor protein ASC, and caspase-1, is closely linked to the pathogenesis of various metabolic diseases including gouty arthritis. We investigated whether an orally administrable inhibitor of NLRP3 inflammasome was effective for alleviating the pathological symptoms of gouty arthritis and what was the underlying mechanism...
December 9, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27931959/imaging-of-gout-new-tools-and-biomarkers
#19
REVIEW
Elizabeth G Araujo, Bernhard Manger, Fernando Perez-Ruiz, Ralf G Thiele
While joint aspiration and crystal identification by polarizing microscopy remain the gold standard for diagnosing tophaceous gout, agreement among medical and ancillary health personnel examining synovial fluid using polarizing microscopy for the detection of monosodium urate (MSU) crystals appears to be poor. Imaging modalities, including conventional radiography (CR), ultrasonography (US), magnetic resonance imaging (MRI), and dual-energy computed tomography (DECT), have been found to provide information on the deposition of MSU crystals in tissues, and the consequences of such deposition...
August 2016: Best Practice & Research. Clinical Rheumatology
https://www.readbyqxmd.com/read/27903743/uric-acid-crystals-induce-placental-inflammation-and-alter-trophoblast-function-via-an-il-1-dependent-pathway-implications-for-fetal-growth-restriction
#20
Marie-Eve Brien, Cyntia Duval, Julia Palacios, Ines Boufaied, Andrée-Anne Hudon-Thibeault, Mathieu Nadeau-Vallée, Cathy Vaillancourt, Colin P Sibley, Vikki M Abrahams, Rebecca L Jones, Sylvie Girard
Excessive placental inflammation is associated with several pathological conditions, including stillbirth and fetal growth restriction. Although infection is a known cause of inflammation, a significant proportion of pregnancies have evidence of inflammation without any detectable infection. Inflammation can also be triggered by endogenous mediators, called damage associated molecular patterns or alarmins. One of these damage-associated molecular patterns, uric acid, is increased in the maternal circulation in pathological pregnancies and is a known agonist of the Nlrp3 inflammasome and inducer of inflammation...
January 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
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