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https://www.readbyqxmd.com/read/28719723/de-novo-hhv-8-tumors-induced-by-rituximab-in-autoimmune-or-inflammatory-systemic-diseases
#1
Amandine Perier, Léa Savey, Anne-Geneviève Marcelin, Philippe Serve, David Saadoun, Stéphane Barete
OBJECTIVES: HHV-8, also known as Kaposi's sarcoma (KS) associated herpesvirus is involved in KS and other tumors comprising multicentric Castleman disease (MCD) and primary effusion lymphoma (PEL). Rituximab is currently used for treatment of several autoimmune or inflammatory diseases and humoral organ rejection. De novo HHV-8 induced tumors by rituximab used for autoimmune or inflammatory diseases or humoral organ rejection have not been reported. METHODS: In this retrospective study, we report clinical, virological and pathology of five HIV-negative male patients with HHV-8-induced tumors following rituximab therapy...
July 18, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28715663/a-laboratory-model-of-impulsivity-and-alcohol-use-in-late-adolescence
#2
Matthew J Gullo, Natalie J Loxton, Therese Price, Joanne Voisey, Ross McD Young, Jason P Connor
Impulsivity is a core characteristic of externalizing problems and a robust predictor of alcohol use in adolescence. There is little evidence on the causal mechanisms through which impulsivity influences drinking or how they are affected by key social factors (peer influence). This study reports the development of the first comprehensive laboratory model of adolescent impulsivity and alcohol use. One-hundred and twenty adolescents (50% female) of legal drinking age (M = 19.47 years, SD = 1.12) in Australia (18+ years) were subjected to 1 of 3 experimental manipulations to increase impulsive behavior (reward cue exposure, negative mood induction, ego depletion)...
July 8, 2017: Behaviour Research and Therapy
https://www.readbyqxmd.com/read/28714219/visible-light-excited-ultralong-organic-phosphorescence-by-manipulating-intermolecular-interactions
#3
Suzhi Cai, Huifang Shi, Jiewei Li, Long Gu, Yun Ni, Zhichao Cheng, Shan Wang, Wei-Wei Xiong, Lin Li, Zhongfu An, Wei Huang
Visible light is much more available and less harmful than ultraviolet light, but ultralong organic phosphorescence (UOP) with visible-light excitation remains a formidable challenge. Here, a concise chemical approach is provided to obtain bright UOP by tuning the molecular packing in the solid state under irradiation of available visible light, e.g., a cell phone flashlight under ambient conditions (room temperature and in air). The excitation spectra exhibit an obvious redshift via the incorporation of halogen atoms to tune intermolecular interactions...
July 17, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28707270/profiling-of-cellular-microrna-responses-during-the-early-stages-of-kshv-infection
#4
Hosni A M Hussein, Shaw M Akula
Kaposi's sarcoma-associated herpesvirus (KSHV) causes a variety of cancers, including Kaposi's sarcoma (KS), primary effusion lymphoma (PEL), and multicentric Castleman disease (MCD). Host cellular microRNAs (miRNAs) play important post-transcriptional regulatory roles in gene expression and can greatly influence virus-host cell interactions. This study investigated cellular miRNA expression profiles operating in response to early stages of KSHV infection of human Burkitt lymphoma B cells (BJAB). We employed deep sequencing to analyze miRNA expression in KSHV-infected BJAB cells 15 min post infection (PI) and compared this to uninfected BJAB cells...
July 13, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28696561/a-solar-blind-uv-detector-based-on-graphene-microcrystalline-diamond-heterojunctions
#5
Minsong Wei, Kaiyuan Yao, Yumeng Liu, Chen Yang, Xining Zang, Liwei Lin
An ultraviolet detector is demonstrated through a whole-wafer, thin diamond film transfer process to realize the heterojunction between graphene and microcrystalline diamond (MCD). Conventional direct transfer processes fail to deposit graphene onto the top surface of the MCD film. However, it is found that the 2 µm thick MCD diamond film can be easily peeled off from the growth silicon substrate to expose its smooth backside for the graphene transfer process for high-quality graphene/MCD heterojunctions. A vertical graphene/MCD/metal structure is constructed as the photodiode device using graphene as the transparent top electrode for solar-blind ultraviolet sensing with high responsivity and gain factor...
July 11, 2017: Small
https://www.readbyqxmd.com/read/28688007/how-is-patella-height-modified-after-total-knee-arthroplasty
#6
Jean Louis Prudhon, Jacques H Caton, Thierry Aslanian, Régis Verdier
INTRODUCTION: Since the first measurement method of patella height in 1929 (Janssen), more than 16 methods have been described. Most of these measures are not suitable to measure patella height after total knee arthroplasty (TKA). One of us (JC) modified the original Caton Deschamps (oCD), index with a new relative index called modified Caton Deschamps (mCD) index, by using new landmarks. The purpose of this study was to determine how patella height is modified after TKA. MATERIAL AND METHOD: Sixty primary TKAs were consecutively prospectively enrolled...
July 7, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28686769/metastatic-crohn-disease-a-review-of-dermatologic-manifestations-and-treatment
#7
Adam Bender-Heine, John T Grantham, Stanley Zaslau, Robert Jansen
It is estimated that almost half of patients affected with Crohn disease (CD) experience a dermatologic manifestation of the condition. Metastatic CD (MCD) is a rare dermatologic entity, with as few as 100 cases reported in the literature. As such, MCD presents a clinical dilemma in diagnosis and management. The etiology of MCD is not well defined; however, prevailing theories agree that the underlying mechanism is an immunologic response to gut antigens. Diagnosis requires a high index of suspicion and usually is made by exclusion of other processes...
June 2017: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/28679994/multicentric-castleman-s-disease-with-multiple-hepatic-mass-lesions-mimicking-malignant-liver-tumors
#8
Toshimitsu Ueki, Masaru Nasuno, Hiroko Kaiume, Yuki Hiroshima, Masahiko Sumi, Masahide Watanabe, Dai Inoue, Yasufumi Masaki, Yasuharu Sato, Masaru Kojima, Hikaru Kobayashi
Multicentric Castleman's disease (MCD) is a rare, non-malignant lymphoproliferative disorder. We report a case of MCD with multiple liver masses. A 26-year-old woman presented with asymptomatic anemia and hypoalbuminemia. Laboratory tests detected high CRP levels and findings indicative of polyclonal gammopathy. Abdominal CT revealed multiple hepatic large masses (≤10 cm) and partial calcification in the right lobe. Multiple enlarged lymph nodes were also identified in the cardiophrenic angle and porta hepatis...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28676836/genetic-nrf2-overactivation-inhibits-the-deleterious-effects-induced-by-hepatocyte-specific-c-met-deletion-during-the-progression-of-nash
#9
Pierluigi Ramadori, Hannah Drescher, Stephanie Erschfeld, Athanassios Fragoulis, Thomas W Kensler, Christoph Jan Wruck, Francisco Javier Cubero, Christian Trautwein, Konrad L Streetz, Daniela C Kroy
We have recently shown that hepatocyte-specific c-met deficiency accelerates the progression of nonalcoholic steatohepatitis in experimental murine models resulting in augmented production of reactive oxygen species and accelerated development of fibrosis. The aim of this study focuses on the elucidation of the underlying cellular mechanisms driven by Nrf2 overactivation in hepatocytes lacking c-met receptor characterized by a severe unbalance between pro-oxidant and antioxidant functions. Control mice (c-met(fx/fx)), single c-met knockouts (c-met(Δhepa)), and double c-met/Keap1 knockouts (met/Keap1(Δhepa)) were then fed a chow or a methionine-choline-deficient (MCD) diet, respectively, for 4 weeks to reproduce the features of nonalcoholic steatohepatitis...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28676350/the-effects-of-interleukin-6-neutralizing-antibodies-on-symptoms-of-depressed-mood-and-anhedonia-in-patients-with-rheumatoid-arthritis-and-multicentric-castleman-s-disease
#10
Yu Sun, Dai Wang, Giacomo Salvadore, Benjamin Hsu, Mark Curran, Corey Casper, Jessica Vermeulen, Justine M Kent, Jaskaran Singh, Wayne C Drevets, Gayle M Wittenberg, Guang Chen
Cytokines, including interleukin-6 (IL-6), modulate neuronal plasticity and stress coping. Depressive symptoms and major depressive disorder (MDD) have been associated with changes in cytokines and their signaling. The current study examined the effect of IL-6 monoclonal antibody administration on depressive symptoms in patients with rheumatoid arthritis (RA) or multicentric Castleman's disease (MCD). The data were obtained from two phase 2, double-blind, placebo-controlled trials designed to test the efficacy of sirukumab in RA (N=176) or of siltuximab in MCD (N=65), and were analyzed post hoc to investigate the effects of these IL6 antibodies on depressive symptoms...
July 1, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28664347/antibiotic-treatment-for-uncomplicated-and-mild-complicated-diverticulitis-outpatient-treatment-for-everyone
#11
Gaëtan-Romain Joliat, Jonathan Emery, Nicolas Demartines, Martin Hübner, Bertrand Yersin, Dieter Hahnloser
PURPOSE: Antibiotic treatment is the treatment of choice for uncomplicated diverticulitis (uD) and can be performed for mild complicated diverticulitis (mcD). In several cases, outpatient treatment (OT) can be undertaken. This study assessed the 1-month failure rate of OT for uD/mcD compared to inpatient treatment (IT), and identified predictive factors for treatment failure. METHODS: All consecutive patients (2006-2012) diagnosed with uD/mcD by CT scan were retrospectively analyzed...
June 29, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28662517/caveolae-depletion-contributes-to-vasorelaxant-effects-of-chenodeoxycholic-acid
#12
Zhongchao Wang, Qiang Lv, Huan Liu, Yue Wu, Yungang Bai, Yaoping Cheng, Yuting Su, Yue Cai, Jinwen Yu, Jin Ma, Junxiang Bao
BACKGROUND/AIMS: High concentration of bile acids (BAs) induces hydrophobicity-dependent vasorelaxtant effects with hydrophobic BAs showing greater responses than hydrophilic BAs, of which the underlying mechanisms are still unclear. Caveolae are invaginations on membranes of endothelial cells (ECs) entraping endothelial nitric oxide synthase (eNOS) to prevent its activation, which plays a critical role in regulation of vascular function. The purpose of the present study was to investigate the role of caveolae in vasorelaxant effects of BAs...
June 28, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28659857/a-new-rat-model-of-epileptic-spasms-based-on-methylazoxymethanol-induced-malformations-of-cortical-development
#13
Eun-Hee Kim, Mi-Sun Yum, Minyoung Lee, Eun-Jin Kim, Woo-Hyun Shim, Tae-Sung Ko
Malformations of cortical development (MCDs) can cause medically intractable epilepsies and cognitive disabilities in children. We developed a new model of MCD-associated epileptic spasms by treating rats prenatally with methylazoxymethanol acetate (MAM) to induce cortical malformations and postnatally with N-methyl-d-aspartate (NMDA) to induce spasms. To produce cortical malformations to infant rats, two dosages of MAM (15 mg/kg, intraperitoneally) were injected to pregnant rats at gestational day 15. In prenatally MAM-exposed rats and the controls, spasms were triggered by single (6 mg/kg on postnatal day 12 (P12) or 10 mg/kg on P13 or 15 mg/kg on P15) or multiple doses (P12, P13, and P15) of NMDA...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28658768/clinicopathological-analysis-of-glomerular-disease-of-adult-onset-nephrotic-syndrome-in-an-indian-cohort-a-retrospective-study
#14
Mayur Suryawanshi, Swapnil Karnik, Sanjeet Roy
INTRODUCTION: Primary glomerular disease presenting with adult onset nephrotic syndrome are a major cause of chronic renal failure worldwide. The spectrum of renal disease presenting with nephrotic syndrome has undergone a gradual change globally over the course of time. However, there still exist regional differences in the incidence of primary glomerular diseases causing adult onset nephrotic syndrome. AIM: To observe the spectrum of renal diseases presenting with adult onset nephrotic syndrome with comparative analysis of changing trends over the last five decades with regards to Western and Indian literature...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28658762/role-of-immunofluorescence-in-adult-onset-nephrotic-syndrome-a-study-in-a-tertiary-care-centre-of-western-india
#15
Sharada Rane, Prerana Mutyal, Nicholas Dcunha, Mayur Parkhi, Meenal Jadhav
INTRODUCTION: Study of renal Immunofluorescence (IF) is an ancillary but essential technique in evaluation of renal biopsies in glomerulopathies and also it enlightens on the pathogenesis of nephrotic syndrome. AIM: To determine the role of IF in evaluating definite subtyping and diagnosis of adult onset nephrotic syndrome and attempting clinicopathological correlation. MATERIALS AND METHODS: A total of 52 patients of adult onset nephrotic syndrome were evaluated clinically and with pertinent investigations; and subjected to USG guided percutaneous renal biopsy which was processed and stained for light microscopy and for immunofluorescence by direct method (DIF) using antibodies against IgG, IgM, IgA and C3...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28649515/higher-oxidative-stress-in-skeletal-muscle-of-mcardle-disease-patients
#16
Jan J Kaczor, Holly A Robertshaw, Mark A Tarnopolsky
McArdle disease (MCD) is an autosomal recessive condition resulting from skeletal muscle glycogen phosphorylase deficiency. The resultant block in glycogenolysis leads to an increased flux through the xanthine oxidase pathway (myogenic hyperuricemia) and could lead to an increase in oxidative stress. We examined markers of oxidative stress (8-isoprostane and protein carbonyls), NAD(P)H-oxidase, xanthine oxidase and antioxidant enzyme (superoxide dismutase, catalase and glutathione peroxidase) activity in skeletal muscle of MCD patients (N = 12) and controls (N = 12)...
September 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28642944/magnetic-circular-dichroism-of-ucl6-in-the-ligand-to-metal-charge-transfer-spectral-region
#17
Frédéric Gendron, Valerie E Fleischauer, Thomas J Duignan, Brian L Scott, Matthias W Löble, Samantha K Cary, Stosh A Kozimor, Hélène Bolvin, Michael L Neidig, Jochen Autschbach
We present a combined ab initio theoretical and experimental study of the magnetic circular dichroism (MCD) spectrum of the octahedral UCl6(-) complex ion in the UV-Vis spectral region. The ground state is an orbitally non-degenerate doublet E5/2u and the MCD is a -term spectrum caused by spin-orbit coupling. Calculations of the electronic spectrum at various levels of theory indicate that differential dynamic electron correlation has a strong influence on the energies of the dipole-allowed transitions and the envelope of the MCD spectrum...
June 23, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28638601/the-efficacy-of-rituximab-in-adult-frequently-relapsing-minimal-change-disease
#18
Catherine King, Sarah Logan, Stuart W Smith, Peter Hewins
BACKGROUND: Corticosteroids are the basis of treatment for nephrotic syndrome due to minimal change disease (MCD), but 25% of patients have frequently relapsing nephrotic syndrome (FRNS) and 30% become steroid dependent. Prolonged use of conventional immunosuppressants causes significant toxicity. Rituximab (RTX) is now included in guidelines for childhood MCD. Evidence for use in adult MCD is limited. We describe a single-centre experience of RTX use in adult MCD. METHODS: Outcomes of all adult MCD patients treated with RTX for FRNS between 2008 and 2015 were retrospectively analysed...
February 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28635324/gliptins-suppress-inflammatory-macrophage-activation-to-mitigate-inflammation-fibrosis-oxidative-stress-and-vascular-dysfunction-in-models-of-non-alcoholic-steatohepatitis-and-liver-fibrosis
#19
Xiaoyu Wang, Michael Hausding, Shih-Yen Weng, Yong Ook Kim, Sebastian Steven, Thomas Klein, Andreas Daiber, Detlef Schuppan
AIMS: Non-alcoholic steatohepatitis (NASH) is characterized by steatosis, panlobular inflammation, liver fibrosis and increased cardiovascular mortality. Dipeptidyl peptidase-4 (DPP-4) inhibitors (gliptins) are indirect glucagon like peptide 1 (GLP-1) agonists with antidiabetic and anti-inflammatory activity, used for the treatment of type 2 diabetes. Their potential and underlying mechanisms to treat metabolic liver inflammation and fibrosis as well as the associated vascular dysfunction remain to be explored...
June 21, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28633109/endothelial-nlrp3-inflammasome-activation-and-arterial-neointima-formation-associated-with-acid-sphingomyelinase-during-hypercholesterolemia
#20
Saisudha Koka, Min Xia, Yang Chen, Owais M Bhat, Xinxu Yuan, Krishna M Boini, Pin-Lan Li
The NLRP3 inflammasome has been reported to be activated by atherogenic factors, whereby endothelial injury and consequent atherosclerotic lesions are triggered in the arterial wall. However, the mechanisms activating and regulating NLRP3 inflammasomes remain poorly understood. The present study tested whether acid sphingomyelinase (ASM) and ceramide associated membrane raft (MR) signaling platforms contribute to the activation of NLRP3 inflammasomes and atherosclerotic lesions during hypercholesterolemia. We found that 7-ketocholesterol (7-Keto) or cholesterol crystal (ChC) markedly increased the formation and activation of NLRP3 inflammasomes in mouse carotid arterial endothelial cells (CAECs), as shown by increased colocalization of NLRP3 with ASC or caspase-1, enhanced caspase-1 activity and elevated IL-1β levels, which were markedly attenuated by mouse Asm siRNA, ASM inhibitor- amitriptyline, and deletion of mouse Asm gene...
June 15, 2017: Redox Biology
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