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https://www.readbyqxmd.com/read/29054981/immunoadsorption-in-anti-gbm-glomerulonephritis-case-report-in-a-child-and-literature-review
#1
Guillaume Dorval, Mathilde Lion, Sophie Guérin, Saoussen Krid, Louise Galmiche-Rolland, Rémi Salomon, Olivia Boyer
Antiglomerular basement membrane glomerulonephritis (anti-GBM GN) is a rare autoimmune disease that is characterized by rapidly progressive glomerulonephritis that may be associated with pulmonary hemorrhage. Anti-GBM GN is caused by autoantibodies (classically type G immunoglobulin) directed against the α3 subunit of type IV collagen. Without any appropriate treatment, the disease is generally fulminant, and patient and kidney survival is poor. The current guidelines recommend the use of plasma exchanges and immunosuppressive drugs...
October 20, 2017: Pediatrics
https://www.readbyqxmd.com/read/29054943/non-infectious-aortitis-in-an-immunosuppressed-renal-transplant-recipient-with-iga-nephropathy
#2
Charlotte M Snead, Stephen C Crockett, Phillippa K Bailey
A 54-year-old woman presented with atypical chest pain, fever and malaise. She was immunosuppressed with three agents following a living-donor kidney transplant 1 year previously. Her native kidney failure was secondary to biopsy-demonstrated crescentic IgA nephropathy, with systemic involvement. A CT pulmonary angiogram revealed an inflammatory cuff of soft tissue around the descending thoracic aorta suggesting aortitis. Inflammatory markers were elevated. Given her immunosuppression, the patient was screened extensively for infective causes and was empirically commenced on intravenous meropenem...
October 19, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29053691/quantitative-whole-mount-immunofluorescence-analysis-of-cardiac-progenitor-populations-in-mouse-embryos
#3
Evan Bardot, Nikos Tzavaras, Deanna L Benson, Nicole C Dubois
The use of ever-advancing imaging techniques has contributed broadly to our increased understanding of embryonic development. Pre-implantation development and organogenesis are two areas of research that have benefitted greatly from these advances, due to the high quality of data that can be obtained directly from imaging pre-implantation embryos or ex vivo organs. While pre-implantation embryos have yielded data with especially high spatial resolution, later stages have been less amenable to three-dimensional reconstruction...
October 12, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29050536/the-correlation-of-urinary-podocytes-and-podocalyxin-with-histological-features-of-lupus-nephritis
#4
D Ikuma, K Hiromura, H Kajiyama, J Suwa, H Ikeuchi, T Sakairi, Y Kaneko, A Maeshima, H Kurosawa, Y Hirayama, K Yokota, Y Araki, K Sato, Y F Asanuma, Y Akiyama, M Hara, Y Nojima, T Mimura
Objectives The objective of this study was to test the correlation of urinary podocyte number (U-Pod) and urinary podocalyxin levels (U-PCX) with histology of lupus nephritis. Methods This was an observational, cross-sectional study. Sixty-four patients were enrolled: 40 with lupus nephritis and 24 without lupus nephritis (12 lupus nephritis patients in complete remission and 12 systemic lupus erythematosus patients without lupus nephritis). Urine samples were collected before initiating treatment. U-Pod was determined by counting podocalyxin-positive cells, and U-PCX was measured by sandwich ELISA, normalized to urinary creatinine levels (U-Pod/Cr, U-PCX/Cr)...
January 1, 2017: Lupus
https://www.readbyqxmd.com/read/29043147/a-case-report-of-paraproteinemia-associated-pauci-immune-glomerulonephritis-a-new-form-of-monoclonal-gammopathy-of-renal-significance
#5
Robert Rope, Neeraja Kambham, Neiha Arora
BACKGROUND: Renal disease associated with paraproteinemias is classically predicated upon pathologic paraprotein deposition in the kidney. However, growing evidence suggests that paraproteins may be able to systemically activate complement or neutrophils to drive renal damage. This may provide an alternative pathologic mechanism for renal injury in rare cases. CASE REPORT: We report a case of a patient with crescentic pauci-immune glomerulonephritis presenting with rapidly progressive renal failure, polyarthropathy, and a purpuric rash in association with a monoclonal immunoglobulin G κ-light-chain producing multiple myeloma...
2017: Clin Nephrol Case Stud
https://www.readbyqxmd.com/read/29043141/antineutrophil-cytoplasmic-antibody-positive-pauci-immune-glomerulonephritis-associated-with-mantle-cell-lymphoma
#6
Kana N Miyata, Nazia A Siddiqi, Lawrence P Kiss, Nikolas B Harbord, James F Winchester
Renal involvement in non-Hodgkin lymphoma, especially mantle cell lymphoma (MCL) is rare. A 77-year-old man presented with acute kidney injury (AKI), which rapidly progressed to dialysis dependence. Kidney biopsy revealed patchy B-cell lymphocytic aggregates in the interstitium, which were positive for cyclin D1, consistent with atypical CD5-negative MCL as confirmed by the detection of translocation t(11;14) by FISH. Crescents were noted in 3 of 26 glomeruli; while PR-3 antineutrophil cytoplasmic antibody (ANCA) positivity and negative immunofluorescence suggested an additional pauci-immune (rapidly progressive) glomerulonephritis pattern of injury...
2017: Clin Nephrol Case Stud
https://www.readbyqxmd.com/read/29041631/highly-improved-non-localized-field-enhancement-enabled-by-hybrid-plasmon-of-crescent-resonator-graphene-in-infrared-wavelength
#7
Chen Chen, Guan Wang, Lilan Peng, Kai Zhang
The development of surface enhanced infrared absorption has been constrained by the limited field enhancement and narrow-band resonance of commonly used metal resonators. In this theoretical work, the design of a crescent resonator (CR) combined with graphene-enabled plasmon tuning is proposed to settle the drawbacks. The CR is similar to a split ring resonator (SRR), but exhibits a much improved field enhancement. The influence of graphene on the field enhancement of the CR has been systematically investigated...
September 18, 2017: Optics Express
https://www.readbyqxmd.com/read/29041267/propagation-dynamics-of-partially-coherent-crescent-like-optical-beams-in-free-space-and-turbulent-atmosphere
#8
F Wang, J Li, G Martinez-Piedra, O Korotkova
We introduce theoretically and realize experimentally a class of random, wide-sense stationary optical beams with uniform correlations which, on propagation in free space, produce a crescent-like intensity distribution with the maximum at an off-axis position. The crescent's position of maximum intensity accelerates transversally at intermediate distances, and then exhibits a constant lateral shift further from the axis in the far zone of the source. We also show that on propagation in the isotropic turbulent atmosphere, the crescent beam shifts away from the axis as well, but slower than in free space, with rate depending on the strength of turbulence...
October 16, 2017: Optics Express
https://www.readbyqxmd.com/read/29026691/accuracy-of-crescent-sign-on-ocular-ultrasound-in-diagnosing-papilledema
#9
Ananth Bhosale, Virna M Shah, Parag K Shah
AIM: To study the usefulness of orbital ultrasonography in the diagnosis of papilledema. METHODS: Fifty patients who were referred to the neurophthalmology clinic and clinically suspected to have papilledema were selected. Thorough, clinical examination with slitlamp biomicroscopy and visual acuity assessment was done. These patients underwent ultrasonography to demonstrate the crescent sign. The patients were further evaluated with the neurologist and magnetic resonance imaging (MRI) thus confirming the diagnosis of papilledema...
September 26, 2017: World Journal of Methodology
https://www.readbyqxmd.com/read/29026366/trigeminal-trophic-syndrome-associated-with-the-use-of-synthetic-marijuana
#10
Fawad A Khan, Rinu Manacheril, Robin Ulep, Julie E Martin, Anil Chimakurthy
BACKGROUND: Trigeminal trophic syndrome (TTS) is an uncommon disorder of the trigeminal nerve tract and trigeminal brainstem nucleus. The syndrome is characterized by a triad of unilateral crescentic ulcers with anesthesia and paresthesias of the involved trigeminal dermatomes. CASE REPORT: A 24-year-old right-handed black female presented to our emergency department with a 4-week history of rapidly progressive painless desquamation/denudation of skin over her right face and scalp...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/29018342/negative-facial-expressions-but-not-visual-scenes-enhance-human-working-memory-in-younger-and-older-participants
#11
Flávia Schechtman Belham, Maria Clotilde H Tavares, Corina Satler, Ana Garcia, Rosângela C Rodrigues, Soraya L de Sá Canabarro, Carlos Tomaz
Many studies have investigated the influence of emotion on memory processes across the human lifespan. Some results have shown older adults (OA) performing better with positive stimuli, some with negative items, whereas some found no impact of emotional valence. Here we tested, in two independent studies, how younger adults (YA) and OA would perform in a visuospatial working memory (VSWM) task with positive, negative, and neutral images. The task consisted of identifying the new location of a stimulus in a crescent set of identical stimuli presented in different locations in a touch-screen monitor...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29018146/anca-and-iga-glomerulonephritis-all-in-one-prognosis-and-complications
#12
Pitchaphon Nissaisorakarn, Vivette D'Agati, Kisra Anis, Belinda Jim
We present the case of a 75-year-old Hispanic woman with known stage 3 chronic kidney disease, long-standing hypertension and type 2 diabetes mellitus who presented with right-sided abdominal pain and acute kidney injury, nephrotic range proteinuria with positive antimyeloperoxidase antibody. A renal biopsy revealed IgA nephropathy with superimposed pauci-immune antineutrophilic cytoplasmic antibody (ANCA)-associated crescentic glomerulonephritis. The patient was treated with pulse intravenous methylprednisolone, cyclophosphamide and plasmapheresis...
October 9, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28992348/location-of-glomerular-immune-deposits-not-codeposition-of-immunoglobulin-g-influences-definitive-renal-outcomes-in-immunoglobulin-a-nephropathy
#13
Anthony S Alvarado, Nicole K Andeen, Sergey Brodsky, Alice Hinton, Tibor Nadasdy, Charles E Alpers, Christopher Blosser, Behzad Najafian, Brad H Rovin
Background: It has been suggested that the prognosis of immunoglobulin (IgA) nephropathy (IgAN) is adversely affected if there is codeposition of IgG in the glomeruli or if immune deposits are present in the glomerular capillary walls. We sought to understand how these variables affect clinical outcome. Methods: A total of 80 IgAN biopsies were retrospectively divided into groups: (i) IgA without IgG deposition versus IgA + IgG and (ii) immune deposits restricted to the mesangium versus mesangium and peripheral capillary walls (PCWs)...
August 16, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28985225/disrupting-assembly-of-the-inner-membrane-complex-blocks-plasmodium-falciparum-sexual-stage-development
#14
Molly Parkyn Schneider, Boyin Liu, Philipp Glock, Annika Suttie, Emma McHugh, Dean Andrew, Steven Batinovic, Nicholas Williamson, Eric Hanssen, Paul McMillan, Marion Hliscs, Leann Tilley, Matthew W A Dixon
Transmission of malaria parasites relies on the formation of a specialized blood form called the gametocyte. Gametocytes of the human pathogen, Plasmodium falciparum, adopt a crescent shape. Their dramatic morphogenesis is driven by the assembly of a network of microtubules and an underpinning inner membrane complex (IMC). Using super-resolution optical and electron microscopies we define the ultrastructure of the IMC at different stages of gametocyte development. We characterize two new proteins of the gametocyte IMC, called PhIL1 and PIP1...
October 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28984299/medical-renal-diseases-are-frequent-but-often-unrecognized-in-adult-autopsies
#15
Marie E Perrone, Anthony Chang, Kammi J Henriksen
Kidney diseases affect many hospitalized patients and contribute to morbidity and mortality. Therefore, kidney disease should be prevalent, but the frequency and spectrum of medical renal pathology in autopsy specimens has not been well documented. We sought to determine the spectrum of medical renal pathology in adult autopsy specimens and the frequency of overlooked diagnoses. We reviewed the hematoxylin- and eosin-stained kidney sections from 140 adult autopsies performed at a large teaching hospital over a 2-year period...
October 6, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28983704/presentation-of-pediatric-henoch-sch%C3%A3-nlein-purpura-nephritis-changes-with-age-and-renal-histology-depends-on-biopsy-timing
#16
Imke Hennies, Charlotte Gimpel, Jutta Gellermann, Kristina Möller, Brigitte Mayer, Katalin Dittrich, Anja K Büscher, Matthias Hansen, Wiebke Aulbert, Elke Wühl, Richard Nissel, Gessa Schalk, Lutz T Weber, Michael Pohl, Simone Wygoda, Rolf Beetz, Günter Klaus, Henry Fehrenbach, Sabine König, Hagen Staude, Ortraud Beringer, Martin Bald, Ulrike Walden, Christian von Schnakenburg, Gunhard Bertram, Michael Wallot, Karsten Häffner, Thorsten Wiech, Peter F Hoyer, Martin Pohl
BACKGROUND: This study correlates the clinical presentation of Henoch-Schönlein purpura nephritis (HSPN) with findings on initial renal biopsy. METHODS: Data from 202 pediatric patients enrolled in the HSPN registry of the German Society of Pediatric Nephrology reported by 26 centers between 2008 and 2014 were analyzed. All biopsy reports were re-evaluated for the presence of cellular crescents or chronic pathological lesions (fibrous crescents, glomerular sclerosis, tubular atrophy >5%, and interstitial fibrosis >5%)...
October 5, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28970290/a-comparison-of-the-resection-rate-for-cold-and-hot-snare-polypectomy-for-4-9-mm-colorectal-polyps-a-multicentre-randomised-controlled-trial-crescent-study
#17
Takuji Kawamura, Yoji Takeuchi, Satoshi Asai, Isao Yokota, Eisuke Akamine, Minoru Kato, Takuji Akamatsu, Kazuhiro Tada, Yoriaki Komeda, Mineo Iwatate, Ken Kawakami, Michiko Nishikawa, Daisuke Watanabe, Atsushi Yamauchi, Norimasa Fukata, Masaaki Shimatani, Makoto Ooi, Koichi Fujita, Yasushi Sano, Hiroshi Kashida, Satoru Hirose, Hiroyoshi Iwagami, Noriya Uedo, Satoshi Teramukai, Kiyohito Tanaka
OBJECTIVE: To investigate the success rate of cold snare polypectomy (CSP) for complete resection of 4-9 mm colorectal adenomatous polyps compared with that of hot snare polypectomy (HSP). DESIGN: A prospective, multicentre, randomised controlled, parallel, non-inferiority trial conducted in 12 Japanese endoscopy units. Endoscopically diagnosed sessile adenomatous polyps, 4-9 mm in size, were randomly assigned to the CSP or HSP group. After complete removal of the polyp using the allocated technique, biopsy specimens from the resection margin after polypectomy were obtained...
September 28, 2017: Gut
https://www.readbyqxmd.com/read/28967684/microtubule-array-observed-in-the-posterior-vegetal-cortex-during-cytoplasmic-and-cortical-reorganization-of-the-ascidian-egg
#18
Hirokazu Ishii, Toshiyuki Goto, Takahito Nishikata
Body axis formation during embryogenesis results from asymmetric localization of maternal factors in the egg. Shortly before the first cleavage in ascidian eggs, cell polarity along the anteroposterior (A-P) axis is established and the cytoplasmic domain (myoplasm) relocates from the vegetal to the posterior region in a microtubule-dependent manner. Through immunostaining, tubulin accumulation during this reorganization is observable on the myoplasm cortex. However, more detailed morphological features of microtubules remain relatively unknown...
October 2, 2017: Development, Growth & Differentiation
https://www.readbyqxmd.com/read/28966040/evolution-and-prognosis-of-intramural-aortic-hematoma-insights-from-a-midterm-cohort-study
#19
Carlos Ferrera, Isidre Vilacosta, Juan Carlos Gómez-Polo, Sara Villanueva-Medina, Beatriz Cabeza, Luis Ortega, Victoria Cañadas, Manuel Carnero-Alcázar, Isaac Martínez-López, Luis Maroto-Castellanos, Francisco Javier Serrano-Hernando
BACKGROUND: Although several hypotheses have been proposed, the true origin and pathogenesis of aortic intramural hematoma (IMH) remain unclear. Evolution of patients with aortic IMH is highly variable. Progression to classic aortic dissection, aneurysm or to complete resolution have been described. Our purpose was to assess in-hospital and mid-term evolution of patients with aortic IMH. METHODS: From 2000 to 2015, 40 patients with aortic IMH were prospectively and consecutively recruited in a tertiary care referral center...
September 20, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28962033/virtual-reality-tumor-resection-the-force-pyramid-approach
#20
Robin Sawaya, Abdulgadir Bugdadi, Hamed Azarnoush, Alexander Winkler-Schwartz, Fahad E Alotaibi, Khalid Bajunaid, Gmaan A AlZhrani, Ghusn Alsideiri, Abdulrahman J Sabbagh, Rolando F Del Maestro
BACKGROUND: The force pyramid is a novel visual representation allowing spatial delineation of instrument force application during surgical procedures. In this study, the force pyramid concept is employed to create and quantify dominant hand, nondominant hand, and bimanual force pyramids during resection of virtual reality brain tumors. OBJECTIVE: To address 4 questions: Do ergonomics and handedness influence force pyramid structure? What are the differences between dominant and nondominant force pyramids? What is the spatial distribution of forces applied in specific tumor quadrants? What differentiates "expert" and "novice" groups regarding their force pyramids? METHODS: Using a simulated aspirator in the dominant hand and a simulated sucker in the nondominant hand, 6 neurosurgeons and 14 residents resected 8 different tumors using the CAE NeuroVR virtual reality neurosurgical simulation platform (CAE Healthcare, Montréal, Québec and the National Research Council Canada, Boucherville, Québec)...
September 5, 2017: Operative Neurosurgery (Hagerstown, Md.)
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