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https://www.readbyqxmd.com/read/28193727/inference-of-gene-flow-in-the-process-of-speciation-an-efficient-maximum-likelihood-method-for-the-isolation-with-initial-migration-model
#1
Rui J Costa, Hilde Wilkinson-Herbots
The isolation-with-migration (IM) model is commonly used to make inferences about gene flow during speciation, using polymorphism data. However, Becquet and Przeworski (2009) report that the parameter estimates obtained by fitting the IM model are very sensitive to the model's assumptions, including the assumption of constant gene flow until the present. This paper is concerned with the isolation-with-initial-migration (IIM) model, which drops precisely this assumption. In the IIM model, one ancestral population divides into two descendant subpopulations, between which there is an initial period of gene flow and a subsequent period of isolation...
February 13, 2017: Genetics
https://www.readbyqxmd.com/read/28118525/predictors-of-reduced-health-related-quality-of-life-in-adult-patients-with-idiopathic-inflammatory-myopathies
#2
Michal Feldon, Payam Noroozi Farhadi, Hermine I Brunner, Lukasz Itert, Bob Goldberg, Abdullah Faiq, Jesse Wilkerson, Kathryn M Rose, Lisa G Rider, Frederick W Miller, Edward H Giannini
OBJECTIVE: Extensive studies on health-related quality of life (HRQOL) in idiopathic inflammatory myopathies (IIM) are lacking. Our objective was to document HRQOL and to identify factors associated with a reduced HRQOL in IIM patients. METHODS: A total of 1,715 patients (median age 49.9, 70% female, 87% Caucasian) who met probable or definite Bohan and Peter or Griggs criteria for myositis were included from the MYOVISION registry. HRQOL was ascertained via the SF-12v2® Health Survey questionnaire...
January 24, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/28101144/histopathological-findings-in-systemic-sclerosis-related-myopathy-fibrosis-and-microangiopathy-with-lack-of-cellular-inflammation
#3
Claudio Corallo, Maurizio Cutolo, Nila Volpi, Daniela Franci, Margherita Aglianò, Antonio Montella, Chiara Chirico, Stefano Gonnelli, Ranuccio Nuti, Nicola Giordano
OBJECTIVES: The objective of this study was to identify specific histopathological features of skeletal muscle involvement in systemic sclerosis (SSc) patients. METHODS: A total of 35 out of 112 SSc-patients (32%, including 81% female and 68% diffuse scleroderma) presenting clinical, biological and electromyographic (EMG) features of muscle weakness, were included. Patients underwent vastus lateralis biopsy, assessed for individual pathologic features including fibrosis [type I collagen (Coll-I), transforming growth factor β (TGF-β)], microangiopathy [cluster of differentiation 31 (CD31), pro-angiogenic vascular endothelial growth factor A (VEGF-A), anti-angiogenic VEGF-A165b], immune/ inflammatory response [CD4, CD8, CD20, human leucocyte antigens ABC (HLA-ABC)], and membranolytic attack complex (MAC)...
January 2017: Therapeutic Advances in Musculoskeletal Disease
https://www.readbyqxmd.com/read/28088340/the-role-of-magnetic-resonance-imaging-techniques-in-evaluation-and-management-of-the-idiopathic-inflammatory-myopathies
#4
REVIEW
Jessica Day, Sandy Patel, Vidya Limaye
Magnetic resonance imaging (MRI) is an important tool in the evaluation of neuromuscular disorders. MRI accurately demonstrates muscle oedema, atrophy, subcutaneous pathology and fatty infiltration and also highlights the distribution of muscle involvement. This review examines the role of MRI in evaluation of the idiopathic inflammatory myopathies (IIMs), a heterogeneous group of autoimmune conditions characterised by muscle inflammation and a variety of extra-muscular manifestations. MRI has a clear role in aiding diagnosis of these conditions, guiding muscle biopsy, differentiating subtypes of IIM using a pattern-based approach, and monitoring disease activity in a longitudinal fashion...
November 5, 2016: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/28076913/use-of-intravenous-immunoglobulin-therapy-for-myositis-an-audit-in-south-australian-patients
#5
Caroline Foreman, Paul Russo, Noelene Davies, Pravin Hissaria, Susanna Proudman, Tiffany Hughes, Vidya Limaye
In South Australia, between 2000 and 2014, 57 patients with idiopathic inflammatory myositis (IIM) were treated with intravenous immunoglobulin (IVIg). We reviewed disease characteristics to determine predictors of response to therapy and IVIg dosing and duration to identify opportunities to rationalise IVIg use. Patients with dermatomyositis/polymyositis had a response rate of 77% and were more likely than inclusion body myositis to respond to therapy. Consideration should be given to the use of the lowest possible dose of IVIg and to the undertaking of trials of cessation of IVIg in patients with stable IIM...
January 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28032847/molecular-markers-of-systemic-autoimmune-disorders-the-expression-of-mhc-located-hsp70-genes-is-significantly-associated-with-autoimmunity-development
#6
Martina Mišunová, Tana Svitálková, Lenka Pleštilová, Olga Kryštufková, Dana Tegzová, Radka Svobodová, Marketa Hušáková, Michal Tomčík, Radim Bečvář, Jakub Závada, Herman Mann, Libor Kolesár, Antonij Slavčev, Jiri Vencovský, Peter Novota
OBJECTIVES: To analyse the expression regulation of two inducible HSP70 genes - HSPA1A and HSPA1B - located within the major histocompatibility complex (MHC) in patients with various systemic autoimmune diseases and to prove the reliability of MHC-located HSP70 genes as molecular markers reflecting the autoimmune process. METHODS: 94 adult patients with idiopathic inflammatory myopathy (IIM, n=31), systemic lupus erythematosus (SLE, n=31) or systemic sclerosis (SSc, n=32) and 37 healthy individuals were analysed...
January 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/27991411/one-year-in-review-2016-idiopathic-inflammatory-myopathies
#7
REVIEW
Martina Orlandi, Simone Barsotti, Elisa Cioffi, Sara Tenti, Carmela Toscano, Chiara Baldini, Rossella Neri
Idiopathic inflammatory myopathies (IIM) are a group of rare, acquired, clinically heterogeneous autoimmune inflammatory muscle disorders characterised by muscle weakness and multisystem involvement. Recently, new concepts about pathogenesis, diagnosis and treatment of these complex diseases have been provided. The purpose of this manuscript is to summarise the most relevant literature contributions published over the last year.
November 2016: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/27974098/use-of-biologic-agents-in-idiopathic-inflammatory-myopathies-in-sweden-a-descriptive-study-of-real-life-treatment
#8
John Svensson, Marie Holmqvist, Anna Tjärnlund, Maryam Dastmalchi, Balsam Hanna, Sara Magnusson Bucher, Ingrid E Lundberg
OBJECTIVES: Biologic treatment has revolutionised treatment in rheumatology in the last decades. Patients with idiopathic inflammatory myopathies (IIM) have so far only been treated with biologics off-label, with little published follow-up on those who are treated and how they are treated. We therefore set out to characterise the Swedish IIM patients who have been treated with biologics. METHODS: By linking Swedish registers we identified 95 patients with IIM who were treated with biologics between 2000 and 2011...
December 9, 2016: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/27936488/ro52-trim21-deficient-expression-and-function-in-different-subsets-of-peripheral-blood-mononuclear-cells-is-associated-with-a-pro-inflammatory-cytokine-response-in-patients-with-idiopathic-inflammatory-myopathies
#9
D Gómez-Martín, A S Galindo-Feria, A Barrera-Vargas, J Merayo-Chalico, G Juárez-Vega, J Torres-Ruiz, J Alcocer-Varela
The presence of anti-Ro52/Trim21 autoantibodies has been associated with a distinctive clinical profile and has gained value as a prognostic marker in idiopathic inflammatory myopathies (IIM). The aim of the present work was to analyze Ro52/Trim21 expression in different subsets of peripheral blood mononuclear cells (PBMCs) of patients with IIM, as well as the ubiquitination profile and its association with pro-inflammatory cytokine production. We included 18 patients with recent onset IIM and 18 age and gender-matched healthy donors...
December 9, 2016: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/27908534/critical-review-of-the-role-of-intravenous-immunoglobulins-in-idiopathic-inflammatory-myopathies
#10
REVIEW
Sabrina Anh-Tu Hoa, Marie Hudson
OBJECTIVE: The aim of this review was to summarize key findings from the literature concerning the therapeutic role of intravenous immunoglobulins (IVIg) in idiopathic inflammatory myopathies (IIM), dissecting the evidence according to disease subtype and treatment indication, and to review the evidence relating to the mechanism of action of IVIg in IIM to ascertain rationale for continued research. METHODS: Medline (Ovid) and Pubmed databases were searched from inception to July 2016 using relevant keywords...
July 29, 2016: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/27907058/choice-of-high-dose-intravenous-iron-preparation-determines-hypophosphatemia-risk
#11
Benedikt Schaefer, Philipp Würtinger, Armin Finkenstedt, Vickie Braithwaite, André Viveiros, Maria Effenberger, Irene Sulzbacher, Alexander Moschen, Andrea Griesmacher, Herbert Tilg, Wolfgang Vogel, Heinz Zoller
BACKGROUND: Ferric carboxymaltose (FCM) and iron isomaltoside 1000 (IIM) are increasingly used because they allow correction of severe iron deficiency in a single infusion. A transient decrease in serum phosphate concentrations is a frequent side effect of FCM. AIM: To characterize this adverse event and search for its predictors in a gastroenterology clinic patient cohort. METHODS: Electronic medical records of patients attending the University Hospital of Innsbruck were searched for the keywords ferric carboxymaltose or iron isomaltoside...
2016: PloS One
https://www.readbyqxmd.com/read/27878344/comparison-of-soluble-urokinase-plasminogen-activator-receptor-soluble-triggering-receptor-expressed-on-myeloid-cells-1-procalcitonin-and-c-reactive-protein-in-distinguishing-concurrent-bacterial-infection-from-idiopathic-inflammatory-myopathy
#12
Yizhi Xiao, Hui Luo, Bin Zhou, Xiaodan Dai, Jing Huang, Liping Duan, Yunhui You, Weiru Zhang, Hongjun Zhao, Yanli Xie, Yaou Zhou, Wangbin Ning, Tong Li, Sijia Liu, Honglin Zhu, Xiaoyun Xie, Ying Jiang, Shiyao Wu, Weijia He, Yisha Li
The aim of the study was to measure the diagnostic values of biomarkers of bacterial infection in idiopathic inflammatory myopathy (IIM) patients. The serum and clinical data of 82 IIM patients with/without bacterial infection were collected. Concentrations of soluble urokinase plasminogen activator receptor (suPAR), soluble triggering receptor expressed on myeloid cells 1 (sTREM-1), procalcitonin (PCT) and C-reactive protein (CRP) were measured in IIM patients and healthy controls. There were no significant differences in serum suPAR and sTREM-1 levels between healthy controls and non-infection IIM patients...
November 22, 2016: Rheumatology International
https://www.readbyqxmd.com/read/27752355/cardiac-involvement-in-adult-and-juvenile-idiopathic-inflammatory-myopathies
#13
REVIEW
Thomas Schwartz, Louise Pyndt Diederichsen, Ingrid E Lundberg, Ivar Sjaastad, Helga Sanner
Idiopathic inflammatory myopathies (IIM) include the main subgroups polymyositis (PM), dermatomyositis (DM), inclusion body myositis (IBM) and juvenile DM (JDM). The mentioned subgroups are characterised by inflammation of skeletal muscles leading to muscle weakness and other organs can also be affected as well. Even though clinically significant heart involvement is uncommon, heart disease is one of the major causes of death in IIM. Recent studies show an increased prevalence of traditional cardiovascular risk factors in JDM and DM/PM, which need attention...
2016: RMD Open
https://www.readbyqxmd.com/read/27684828/pulmonary-arterial-hypertension-in-idiopathic-inflammatory-myopathies-data-from-the-french-pulmonary-hypertension-registry-and-review-of-the-literature
#14
REVIEW
Sébastien Sanges, Cécile M Yelnik, Olivier Sitbon, Olivier Benveniste, Kuberaka Mariampillai, Mathilde Phillips-Houlbracq, Christophe Pison, Christophe Deligny, Jocelyn Inamo, Vincent Cottin, Luc Mouthon, David Launay, Marc Lambert, Pierre-Yves Hatron, Laurence Rottat, Marc Humbert, Eric Hachulla
Occurrence of pulmonary arterial hypertension (PAH) in idiopathic inflammatory myopathies (IIMs) without extensive interstitial lung disease (ILD) has rarely been described in the medical literature. This study aimed to report all cases with association of PAH and IIM in the French Pulmonary Hypertension (PH) Registry, to identify IIM features associated with the presence of PAH, and to describe treatment modalities of these patients.All cases of IIM-PAH were retrieved from the French PH Registry, which gathers PH patients prospectively enrolled by 27 referral hospital centers across France...
September 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27666811/dysregulated-innate-immune-function-in-the-aetiopathogenesis-of-idiopathic-inflammatory-myopathies
#15
REVIEW
Jessica Day, Sophia Otto, Susanna Proudman, John D Hayball, Vidya Limaye
The idiopathic inflammatory myopathies (IIMs) are a heterogeneous group of systemic muscle conditions that are believed to be autoimmune in nature. They have distinct pathological features, but the aetiopathogenesis of each subtype remains largely unknown. Recently, there has been increased interest in the complex role the innate immune system plays in initiating and perpetuating these conditions, and how this may differ between subtypes. This article summarises the traditional paradigms of IIM pathogenesis and reviews the accumulating evidence for disturbances in innate immune processes in these rare, but debilitating chronic conditions...
January 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/27629259/curvilinear-bodies-are-associated-with-adverse-effects-on-muscle-function-but-not-with-hydroxychloroquine-dosing
#16
Thomas Khoo, Sophia Otto, Caroline Smith, Barbara Koszyca, Sue Lester, Peter Blumbergs, Vidya Limaye
The clinical significance of curvilinear bodies (CB) seen in association with hydroxychloroquine (HCQ) therapy is uncertain. Patients with CB on muscle biopsy performed between 2006 and the present were identified, and their clinical features including body mass index and cumulative HCQ dose were recorded. A control group of 16 patients with idiopathic inflammatory myositis (IIM) on HCQ at time of biopsy but without evidence of CB was identified. Nineteen patients with CB were identified; details were available for 18...
September 14, 2016: Clinical Rheumatology
https://www.readbyqxmd.com/read/27573534/immune-mediated-necrotizing-myopathy-a-cause-of-isolated-myopathy-of-neck-extensor-muscle
#17
Rahul Sehgal, Rafael Medina-Flores, Ralph Yachoui, Charles V Kenney
Immune mediated necrotizing myopathy (IMNM) is a unique form of myositis that is characterized by distinct muscle biopsy features including abundant myofiber necrosis, degeneration, and regeneration with only minimal, if any, inflammation on muscle biopsy. IMNM is clinically similar to idiopathic inflammatory myopathy (IIM); hence, muscle biopsy is essential to diagnose IMNM. Herein we describe a case of neck extensor weakness due to necrotizing myopathy. Isolated weakness of the neck extensor muscles is uncommon in IIM and IMNM...
December 2016: Clinical Medicine & Research
https://www.readbyqxmd.com/read/27522114/the-immunoproteasomes-are-key-to-regulate-myokines-and-mhc-class-i-expression-in-idiopathic-inflammatory-myopathies
#18
Salyan Bhattarai, Khetam Ghannam, Sabine Krause, Olivier Benveniste, Andreas Marg, Gerjan de Bruin, Bo-Tao Xin, Hermen S Overkleeft, Simone Spuler, Werner Stenzel, Eugen Feist
Idiopathic inflammatory myopathies (IIMs) are diseases with muscle weakness, morphologically characterized by inflammatory infiltration and increased expression of MHC class I molecule on myofibers. Immunoproteasome, as a proteolytic complex that shapes the repertoire of antigenic peptides, has been previously demonstrated to be over-expressed in IIMs at mRNA level. In this study, we investigated the expression and the function of the immunoproteasome in IIMs in more detail. As shown by immunofluorescence staining, expression of relevant players of the immunoproteasome was detectable in the inflamed skeletal muscle tissue from IIM patients...
August 10, 2016: Journal of Autoimmunity
https://www.readbyqxmd.com/read/27504827/health-related-quality-of-life-hrqol-in-idiopathic-inflammatory-myopathy-a-systematic-review
#19
Valérie Leclair, Malin Regardt, Sophie Wojcik, Marie Hudson
Health-related quality of life (HRQoL) is a research priority in chronic diseases. We undertook a systematic review (registration #CRD42015024939) to identify, appraise and synthesize the evidence relating to HRQoL in idiopathic inflammatory myopathies (IIM). A comprehensive search was conducted in August 2015 using CINAHL, EMBase and Pubmed to identify studies reporting original data on HRQoL in IIM using generic HRQoL instruments. Characteristics of samples and results from selected studies were extracted and appraised using a standardized approach...
2016: PloS One
https://www.readbyqxmd.com/read/27502600/the-clinical-utility-of-serum-il-35-in-patients-with-polymyositis-and-dermatomyositis
#20
Liguo Yin, Yongpeng Ge, Hanbo Yang, Qinglin Peng, Xin Lu, Yamei Zhang, Guochun Wang
The objectives of this study are to assess the levels of serum Interleukin-35 (IL-35) in patients with idiopathic inflammatory myopathies (IIMs) and to evaluate the association between IL-35 levels and IIM-related features. Serum IL-35 was detected in 76 patients with dermatomyositis (DM), 28 patients with polymyositis (PM), 98 disease controls (40 rheumatoid arthritis (RA), 34 systemic lupus erythematosus (SLE), 12 systemic sclerosis (SSc), and 12 sjogren syndrome (SS)), and 43 healthy controls by ELISA. Follow-up was conducted on 34 patients...
November 2016: Clinical Rheumatology
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