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Rheumatoid factor

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https://www.readbyqxmd.com/read/28928392/mucosa-associated-lymphoid-tissue-lymphoma-translocation-1-as-a-novel-therapeutic-target-for-rheumatoid-arthritis
#1
Chang Hoon Lee, Su Jeong Bae, Miok Kim
Emerging evidence suggests that mucosa-associated lymphoid tissue lymphoma translocation 1 (MALT1) is a key regulator of inflammatory diseases; however, the pathological role of MALT1 in rheumatoid arthritis (RA) is not well understood. Consequently, this protein has not been therapeutically targeted for the treatment of RA. MALT1 plays a role in the paracaspase pathway, has proteolytic activity and is involved in the regulation of inflammatory responses. In this study, we found that the MALT1-targeting inhibitory small molecule, MALT1 selective inhibitor 2-chloro-N-[4-[5-(3,4-dichlorophenyl)-3-(2-methoxyethoxy)-1H-1,2,4-triazol-1-yl]phenylacetamide (MI-2) strongly suppresses the differentiation of monocytes into osteoclasts in the absence or presence of the inflammatory cytokine tumour necrosis factor α...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28927867/cardiovascular-autonomic-regulation-inflammation-and-pain-in-rheumatoid-arthritis
#2
Ahmed M Adlan, Jet J C S Veldhuijzen van Zanten, Gregory Y H Lip, Julian F R Paton, George D Kitas, James P Fisher
BACKGROUND: Rheumatoid arthritis (RA) is a chronic inflammatory condition characterised by reduced heart rate variability (HRV) of unknown cause. We tested the hypothesis that low HRV, indicative of cardiac autonomic cardiovascular dysfunction, was associated with systemic inflammation and pain. Given the high prevalence of hypertension (HTN) in RA, a condition itself associated with low HRV, we also assessed whether the presence of hypertension further reduced HRV in RA. METHODS: In RA-normotensive (n=13), RA-HTN (n=17), normotensive controls (NC; n=17) and HTN (n=16) controls, blood pressure and heart rate were recorded...
September 13, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28927747/astrocyte-elevated-gene-1-promotes-inflammation-and-invasion-of-fibroblast-like-synoviocytes-in-rheumatoid-arthritis
#3
Ruilong Hong, Kun Wang, Hongguang Shi
Astrocyte elevated gene-1 (AEG-1) was initially induced by HIV-1 infection and involved in tumor progression, migration and invasion as a nuclear factor-κB (NF-κB)-dependent gene. The present study we intended to investigate the protein expression of AEG-1 significantly associated with rheumatoid arthritis. Western blot analysis and immunohistochemistry demonstrated that AEG-1 was upregulated in synovial tissue of RA patients compared with the controls. Double immunofluorescent staining suggested that AEG-1 was expressed in fibroblast-like synoviocytes (FLS) of RA patients...
September 13, 2017: Tissue & Cell
https://www.readbyqxmd.com/read/28926381/total-elbow-arthroplasty-for-distal-humeral-fractures-a-ten-year-minimum-follow-up-study
#4
Raul Barco, Philipp N Streubel, Bernard F Morrey, Joaquin Sanchez-Sotelo
BACKGROUND: Total elbow arthroplasty is commonly considered for elderly patients with comminuted distal humeral fractures. Satisfactory short-term outcomes have been reported, but long-term outcomes are unknown. Our purpose was to assess the long-term outcomes of total elbow arthroplasty after distal humeral fracture and to determine differences between elbows with or without inflammatory arthritis at the time of fracture. METHODS: Forty-four total elbow arthroplasties were performed after distal humeral fracture; those patients were followed for a minimum of 10 years and were evaluated with regard to pain, motion, Mayo Elbow Performance Scores, complications, and reoperations...
September 20, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28925718/interaction-analysis-between-blk-rs13277113-polymorphism-and-bank1-rs3733197-polymorphism-mmel1-tnfrsf14-rs3890745-polymorphism-in-determining-susceptibility-to-rheumatoid-arthritis
#5
Hua Huang, Si-Chao Huang, Dong-Jin Hua, Qing-Qing Sun, Han Cen, Xia-Fei Xin
Two pairwise genetic interactions (B cell lymphocyte kinase (BLK) rs13277113,B cell scaffold protein with ankyrin repeats 1 (BANK1) rs3733197and BLK rs13277113 membrane metalloendopeptidase like 1 (MMEL1)/ tumor necrosis factor receptor superfamily member 14 (TNFRSF14) rs3890745) have been demonstrated in determining susceptibility to rheumatoid arthritis (RA) without replication, thus this study was performed to examine whether abovementioned genetic polymorphisms were associated with RA and further tests were performed to see whether aforementioned genetic interactions existed in RA among Chinese population...
September 19, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28924447/passive-blood-anaphylaxis-subcutaneous-immunoglobulins-are-a-cause-of-ongoing-passive-anaphylactic-reaction
#6
Przemyslaw Zdziarski, Andrzej Gamian, Jacek Majda, Agnieszka Korzeniowska-Kowal
BACKGROUND: Allergic, especially anaphylactic, reactions during immunoglobulin replacement therapy are rare, but their pathophysiology and classification remain ambiguous. Recent findings show positive results of skin tests with commercially available immunoglobulins, but target antigens and responsible compounds of the tested immunoglobulins have not been strictly identified. CASE DESCRIPTION AND FINDINGS: Four adult patients with recently diagnosed common variable immunodeficiency qualified for standard subcutaneous immunoglobulin replacement therapy regimen...
2017: Allergy, Asthma, and Clinical Immunology
https://www.readbyqxmd.com/read/28923429/frequency-of-auditory-involvement-and-of-associated-factors-in-patients-with-juvenile-idiopathic-arthritis
#7
Adriana Ivonne Céspedes Cruz, Myriam Méndez Núñez, Eunice Solís Vallejo, Maritza Zeferino Cruz, Alfonso Ragnar Torres Jiménez, Verónica Ocampo Sánchez, Beatriz Flores Meza, Norma Quintana Ruiz
INTRODUCTION: Juvenile idiopathic arthritis (JIA) is a chronic autoimmune disease characterized by the presence of arthritis in children under 16 years of age for more than 6 weeks in the absence of any other known cause. The extra-articular manifestations, especially in the audiovestibular system, are related to the involvement of the joints of the ossicular chain as a result of the inflammatory process in the synovium. Previous clinical studies in pediatric patients have shown conductive or sensorineural hearing loss...
September 8, 2017: Reumatología Clinica
https://www.readbyqxmd.com/read/28923079/endoplasmic-reticulum-stress-cooperates-with-toll-like-receptor-ligation-in-driving-activation-of-rheumatoid-arthritis-fibroblast-like-synoviocytes
#8
Pawel A Kabala, Chiara Angiolilli, Nataliya Yeremenko, Aleksander M Grabiec, Barbara Giovannone, Desiree Pots, Timothy R Radstake, Dominique Baeten, Kris A Reedquist
BACKGROUND: Endoplasmic reticulum (ER) stress has proinflammatory properties, and transgenic animal studies of rheumatoid arthritis (RA) indicate its relevance in the process of joint destruction. Because currently available studies are focused primarily on myeloid cells, we assessed how ER stress might affect the inflammatory responses of stromal cells in RA. METHODS: ER stress was induced in RA fibroblast-like synoviocytes (FLS), dermal fibroblasts, and macrophages with thapsigargin or tunicamycin alone or in combination with Toll-like receptor (TLR) ligands, and gene expression and messenger RNA (mRNA) stability was measured by quantitative polymerase chain reaction...
September 18, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28921409/the-duality-of-economic-issues-with-medication-non-adherence-in-patients-with-inflammatory-arthritis
#9
REVIEW
Natasha K J Campbell, Khalid Saadeldin, Mary A De Vera
PURPOSE OF REVIEW: In this review, we synthesize current data on non-adherence across inflammatory arthritides and explore (1) the effects of economic factors on non-adherence and (2) the impacts of non-adherence on economic outcomes. RECENT FINDINGS: Recent evidence demonstrates medication non-adherence rates as high as 74% in ankylosing spondylitis (AS), 90% in gout, 50% in psoriatic arthritis (PsA), 75% in systemic lupus erythematosus (SLE), and 82% in rheumatoid arthritis (RA)...
September 18, 2017: Current Rheumatology Reports
https://www.readbyqxmd.com/read/28919343/characterizing-pathology-in-erythrocytes-using-morphological-and-biophysical-membrane-properties-relation-to-impaired-hemorheology-and-cardiovascular-function-in-rheumatoid-arthritis
#10
Oore-Ofe O Olumuyiwa-Akeredolu, Prashilla Soma, Antoinette V Buys, Legesse Kassa Debusho, Etheresia Pretorius
The inflammatory burden of the complex Rheumatoid Arthritis (RA) disease affects several organ-systems, including rheological properties of blood and its formed elements. Red blood cells (RBCs) are constantly exposed to circulating dysregulated inflammatory molecules that are co-transported within the vasculature; and their membranes may be particularly vulnerable to the accompanying oxidative stress. In the current study, we investigate biophysical and ultrastructural characteristics of RBCs obtained from a cohort of patients using atomic force microscopy (AFM), scanning electron microscopy (SEM) and confocal microscopy (CM)...
September 14, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28916968/hmgb-proteins-and-arthritis
#11
REVIEW
Noboru Taniguchi, Yasuhiko Kawakami, Ikuro Maruyama, Martin Lotz
The high-mobility group box (HMGB) family includes four members: HMGB1, 2, 3 and 4. HMGB proteins have two functions. In the nucleus, HMGB proteins bind to DNA in a DNA structure-dependent but nucleotide sequence-independent manner to function in chromatin remodeling. Extracellularly, HMGB proteins function as alarmins, which are endogenous molecules released upon tissue damage to activate the immune system. HMGB1 acts as a late mediator of inflammation and contributes to prolonged and sustained systemic inflammation in subjects with rheumatoid arthritis...
September 15, 2017: Human Cell
https://www.readbyqxmd.com/read/28916915/inflammatory-diseases-and-bone-fragility
#12
REVIEW
K Briot, P Geusens, I Em Bultink, W F Lems, C Roux
Systemic osteoporosis and increased fracture rates have been described in chronic inflammatory diseases such as rheumatoid arthritis, spondyloarthritis, systemic lupus erythematosus, inflammatory bowel diseases, and chronic obstructive pulmonary disease. Most of these patients receive glucocorticoids, which have their own deleterious effects on bone. However, the other main determinant of bone fragility is the inflammation itself, as shown by the interactions between the inflammatory mediators, the actors of the immune system, and the bone remodelling...
September 15, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28916304/rationale-and-design-of-the-arrest-trial-investigating-mesenchymal-stem-cells-in-the-treatment-of-small-aaa
#13
S Keisin Wang, Linden A Green, Ashley R Gutwein, Natalie A Drucker, Raghu L Motaganahalli, Andres Fajardo, Clifford C Babbey, Michael P Murphy
BACKGROUND: Abdominal aortic aneurysms (AAA) are a major source of morbidity and mortality despite continuing advances in surgical technique and care. Although the inciting factors for AAA development continue to be elusive, accumulating evidence suggests a significant peri-aortic inflammatory response leading to degradation and dilation of the aortic wall. Previous human trials have demonstrated safety and efficacy of mesenchymal stem cells (MSCs) in the treatment of inflammation-related pathologies such as rheumatoid arthritis, graft vs host disease, and transplant rejection...
September 12, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28914855/-late-onset-rheumatoid-arthritis-in-a-patient-with-successfully-treated-iga-nephropathy
#14
N V Chebotareva, I N Bobkova, S V Gulyaev
The paper describes a rare clinical case of rheumatoid arthritis (RA) that developed in a patient 9 years after diagnosing IgA nephropathy. Kidney disease was characterized by a stable course with moderate urinary syndrome, hypertension, and reduced renal function. Immunosuppressive therapy using glucocorticosteroids and then mycophenolic acid led to remission of nephritis and recovery of renal function. However, the absence of nephritis activity and discontinuation of immunosuppressants was responsible for articular syndrome...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28914550/socs3-participates-in-cholinergic-pathway-regulation-of-synovitis-in-rheumatoid-arthritis
#15
Tong Li, Shiyao Wu, Sha Li, Xuelian Bai, Hui Luo, Xiaoxia Zuo
Stimulation of the cholinergic inflammatory pathway can promote collagen-induced arthritis (CIA) and inhibit synovitis by Janus kinase (JAK) 2 and signal transducer and activator of transcription (STAT) 3 signaling. Suppressor of cytokine signaling (SOCS) protein can also regulate inflammatory processes and activate JAK/STAT signal transduction, but its involvement in rheumatoid arthritis (RA) has not been demonstrated. This study investigated the effect of SOCS on cholinergic pathway regulation of synovitis in the fibroblast-like synoviocytes (FLSs) of RA and CIA mice...
September 15, 2017: Connective Tissue Research
https://www.readbyqxmd.com/read/28914372/the-role-of-gut-microbiota-in-the-pathogenesis-of-rheumatic-diseases
#16
Danli Zhong, Chanyuan Wu, Xiaofeng Zeng, Qian Wang
Rheumatic diseases refer to many diseases with a loss of immune self-tolerance, leading to a chronic inflammation, degeneration, or metabolic derangement in multiple organs or tissues. The cause of rheumatic diseases remains to be elucidated, though both environmental and genetic factors are required for the development of rheumatic diseases. Over the past decades, emerging studies suggested that alteration of intestinal microbiota, known as gut dysbiosis, contributed to the occurrence or development of a range of rheumatic diseases, including rheumatoid arthritis, systemic lupus erythematosus, ankylosing spondylitis, systemic sclerosis, and Sjogren's syndrome, through profoundly affecting the balance between pro- and anti-inflammatory immune responses...
September 15, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28913574/the-association-between-the-lymphocyte-monocyte-ratio-and-disease-activity-in-rheumatoid-arthritis
#17
Juping Du, Shuaishuai Chen, Jianfeng Shi, Xiaoli Zhu, Haijian Ying, Ying Zhang, Shiyong Chen, Bo Shen, Jun Li
The lymphocyte-monocyte ratio (LMR) is a systemic inflammatory marker for prediction of disease development, progress, and survival. Recently, a genome-wide association study identified genetic variations in ITGA4 and HLA-DRB1 that affect the LMR levels and were widely believed to be susceptibility genes for autoimmune diseases, including rheumatoid arthritis (RA). However, the role of LMR in RA patients remains unclear. The LMR level and other laboratory data of 66 RA patients, 163 osteoarthritis (OA) patients, and 131 healthy controls (HC) were compared using binary logistic regression...
September 14, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28912189/associations-between-circulating-macrophage-migration-inhibitory-factor-mif-levels-and-rheumatoid-arthritis-and-between-mif-gene-polymorphisms-and-disease-susceptibility-a-meta-analysis
#18
Sang-Cheol Bae, Young Ho Lee
AIM: To systematically review evidence regarding the relationship between circulating macrophage migration inhibitory factor (MIF) levels and rheumatoid arthritis (RA), and the association between MIF gene polymorphisms and RA susceptibility. DESIGN: We performed a meta-analysis on data of serum/plasma MIF levels in patients with RA and in controls, and on associations between the MIF-173 C/G and -794CATT5-8 polymorphisms and RA susceptibility. PATIENTS: Twelve studies, comprising a total of 362 RA cases and 531 controls evaluated for MIF levels, and 2367 RA cases and 2395 controls evaluated for MIF polymorphisms, were included...
September 14, 2017: Postgraduate Medical Journal
https://www.readbyqxmd.com/read/28906466/therapeutic-effect-of-exogenous-truncated-ik-protein-in-inflammatory-arthritis
#19
Seulgi Choi, HyeLim Park, SeoYeon Jung, Eun-Kyung Kim, Mi-La Cho, Jun-Ki Min, Su-Jin Moon, Sang-Myeong Lee, Jang-Hee Cho, Dong-Hee Lee, Jae-Hwan Nam
Inhibitor K562 (IK) protein was first isolated from the culture medium of K562, a leukemia cell line. It is known to be an inhibitory regulator of interferon-γ-induced major histocompatibility complex class (MHC) II expression. Previously, we found that transgenic (Tg) mice constitutively expressing truncated IK (tIK) showed reduced numbers of pathogenic Th1 and Th17 cells, which are known to be involved in the development of rheumatoid arthritis (RA). Here, we investigated whether exogenous tIK protein has a therapeutic effect in arthritis in disease models and analyzed its mechanism...
September 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28905133/rabbit-risk-score-and-icu-admission-due-to-infection-in-patients-with-rheumatoid-arthritis
#20
Herwig Pieringer, Rainer Hintenberger, Erich Pohanka, Clemens Steinwender, Jens Meier, Franz Gruber, Lorenz Auer-Hackenberg
Rheumatoid arthritis (RA) patients are at increased risk of infection. Aim of the present study was to investigate whether RA patients admitted to an intensive care unit (ICU) due to infection have higher Rheumatoid Arthritis Observation of Biologic Therapy (RABBIT) risk scores compared to control RA patients. Seventy-four RA patients (32.4% male) admitted to an ICU due to infection (from January 2002 to December 2013) and 74 frequency-matched control RA patients (16.2% male) were included in this cross-sectional study...
September 14, 2017: Clinical Rheumatology
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