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Citrullinated peptides

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https://www.readbyqxmd.com/read/28932330/is-male-rheumatoid-arthritis-an-occupational-disease-a-review
#1
Dan Murphy, David Hutchinson
BACKGROUND: Rheumatoid arthritis (RA) is a systemic, inflammatory disease with an estimated global prevalence of 0.3-1.0%. An unexplained association exists between low formal education and the development of RA independent of smoking. It is established that RA is initiated in the lungs and that various occupations associated with dust, fume and metal inhalation can increase the risk of RA development. OBJECTIVE: The objective of this review is to evaluate published clinical reports related to occupations associated with RA development...
2017: Open Rheumatology Journal
https://www.readbyqxmd.com/read/28932306/prevalence-of-asymptomatic-arterial-hypertension-and-its-correlation-with-inflammatory-activity-in-early-rheumatoid-arthritis
#2
Ismet H Bajraktari, Sylejman Rexhepi, Idriz Berisha, Ali Lahu, Avni Kryeziu, Bastri Durmishi, Halit Bajraktari, Elton Bahtiri
BACKGROUND: Rheumatoid arthritis (RA) is a chronic systemic inflammatory disease that worsens during the course of the disease and can cause disability. Early RA refers to the onset of symptoms within the past 3 months. In RA, increased levels of mediators of inflammation may cause arterial stiffness consequently leading to arterial hypertension. AIM: The aim of this cross-sectional study was to assess the prevalence of asymptomatic arterial hypertension in early RA patients as well as the correlation with parameters of inflammation...
August 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28931886/value-of-measuring-anti-carbamylated-protein-antibodies-for-classification-on-early-arthritis-patients
#3
Cristina Regueiro, Laura Nuño, Ana M Ortiz, Diana Peiteado, Alejandro Villalba, Dora Pascual-Salcedo, Ana Martínez-Feito, Isidoro González-Alvaro, Alejandro Balsa, Antonio González
Classification of patients with rheumatoid arthritis (RA) as quickly as possible improves their prognosis. This reason motivates specially dedicated early arthritis (EA) clinics. Here, we have used 1062 EA patients with two years of follow-up to explore the value of anti-carbamylated protein (anti-CarP) antibodies, a new type of RA specific autoantibodies, for classification. Specifically, we aimed to determine whether the addition of anti-CarP antibodies to IgM rheumatoid factor (RF) and anti-cyclic citrullinated peptide (anti-CCP) antibodies, which are helpful in RA classification, improves it or not...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28920498/an-update-on-biomarker-discovery-and-use-in-axial-spondyloarthritis
#4
Walter P Maksymowych
Evaluation of diagnosis, disease activity, and risk for joint damage all represent important unmet clinical needs in the management of axial spondyloarthritis that have been explored using biomarkers. Areas Covered: This review used the search terms biomarkers, ankylosing spondylitis, spondyloarthritis, spondyloarthropathy, pathogenesis, genetics, diagnostic tools, prognosis, to explore advances in biomarker development relevant to unmet clinical needs. Expert Commentary: Despite major advances in the identification of genetic risk markers, HLA-B*27 remains the only marker with clinical utility for diagnostic purposes...
September 16, 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/28919520/antibodies-against-citrullinated-alpha-enolase-peptides-in-primary-sjogren-s-syndrome
#5
Adrianos Nezos, Ilir Cinoku, Clio P Mavragani, Haralampos M Moutsopoulos
Citrullinated alpha enolase (CEP-1) has been designated as a major antigenic target of antibodies against citrullinated proteins (ACPA) in patients with rheumatoid arthritis (RA). Our aim is to determine the prevalence of anti-CEP-1 in a cohort of ACPA positive (ACPA+) primary Sjogren's syndrome (pSS) patients. Anti-CEP1 titers were determined by ELISA in sera from 15 ACPA+ and 45 ACPA- age/sex matched pSS; 12 ACPA+ RA patients and 30 healthy controls (HC). Increased anti-CEP-1 antibody titers were detected in nine out of the 15 (60%) ACPA+ pSS patients and 5 out of 12 (41...
September 14, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28892879/evaluation-of-anti-cyclic-citrullinated-peptide-autoantibodies-and-c-reactive-protein-in-common-autoimmune-skin-diseases-with-and-without-arthritis
#6
Bandana Kumari, Pawan Kumar, Radha Krishna Prasad Chaudhary
INTRODUCTION: Anti-Cyclic Citrullinated Peptides (CCPs) are a well known diagnostic and prognostic noble marker for rheumatoid arthritis. C-Reactive Protein (CRP) is an acute phase protein whose level rises in response to inflammation. AIM: This study was undertaken to show the role of the two markers (anti-CCPs and CRP) in autoimmune skin disorder and their association with associated arthritis in these disorder. MATERIALS AND METHODS: Serum anti-CCP antibodies and CRP was measured in 50 patients of autoimmune skin disease of which 28 were of psoriasis, 12 of Systemic Lupus Erythematosus (SLE) and 10 of Pemphigus Vulgaris (PV)...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28889152/anti-carbamylated-protein-antibodies-in-rheumatoid-arthritis-patients-and-their-association-with-rheumatoid-factor
#7
Maizatul A Othman, Wan Syamimee W Ghazali, Wan Zuraida W A Hamid, Kah K Wong, Nurul K Yahya
To evaluate levels of anti-carbamylated protein (anti-CarP) antibodies in rheumatoid arthritis (RA) patients and to determine their association with serological parameters and disease activity. Methods: A cross-sectional study involving 105 multiethnic RA patients (48 rheumatoid factor [RF]-positive and 57 RF-negative patients) was conducted at Hospital Universiti Sains Malaysia, Kelantan, Malaysia, from January 2015 to February 2016. Fifty healthy controls (HCs) were included. C-reactive protein (CRP), RF, anti-cyclic citrullinated peptide (anti-CCP) and anti-CarP antibodies were measured...
September 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/28871954/-elevated-serum-il-25-levels-in-rheumatoid-arthritis-patients-with-bone-erosion-and-interstitial-lung-disease
#8
Jinyue Lu, Minglian DA, Yuchen Feng, Yuanyuan Liu, Sigong Zhang, Haili Shen
Objective To detect the serum levels of IL-25 and IL-17 in rheumatoid arthritis (RA) patients and investigate the potential relationship with bone erosion and concomitant interstitial lung disease (ILD). Methods The study enrolled a total of 117 RA patients and 56 healthy subjects as controls. The serum levels of IL-25 and IL-17 were determined by ELISA, and rheumatoid factor (RF) was detected by turbidimetric immunoassay, anticyclic citrullinated peptide (anti-CCP) antibody as well as erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) were also tested...
August 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28870033/-the-expression-and-clinical-significance-of-proprotein-convertase-subtilisin-kexin-9-in-rheumatoid-arthritis
#9
Q Du, X J Yu, H J Li, S Q Guan, Z Y Zhang, Y F Mei
Objective: To assess the expression and significance of proprotein convertase subtilisin kexin 9 (PCSK9) in patients with rheumatoid arthritis (RA). Methods: Sixty-five RA patients and forty-seven healthy controls were recruited in this study. The body mass index (BMI) and serum total cholesterol(TC), triglyceride(TG), high density lipoprotein(HDL), lipoprotein a, low density lipoprotein(LDL), very low density lipoprotein(VLDL), apolipoprotein A(ApoA), apolipoprotein B(ApoB) and the ratio of LDL-C/HDL-C were tested...
September 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/28865493/high-titers-of-both-rheumatoid-factor-and-anti-ccp-antibodies-at-baseline-in-patients-with-rheumatoid-arthritis-are-associated-with-increased-circulating-baseline-tnf-level-low-drug-levels-and-reduced-clinical-responses-a-post-hoc-analysis-of-the-rising-study
#10
Tsutomu Takeuchi, Nobuyuki Miyasaka, Takashi Inui, Toshiro Yano, Toru Yoshinari, Tohru Abe, Takao Koike
BACKGROUND: Although both rheumatoid factor (RF) and anticyclic citrullinated peptide antibodies (anti-CCP) are useful for diagnosing rheumatoid arthritis (RA), the impact of these autoantibodies on the efficacy of tumor necrosis factor (TNF) inhibitors has been controversial. The aim of this post hoc analysis of a randomized double-blind study (the RISING study) was to investigate the influences of RF and anti-CCP on the clinical response to infliximab in patients with RA. METHODS: Methotrexate-refractory patients with RA received 3 mg/kg of infliximab from weeks 0 to 6 and then 3, 6, or 10 mg/kg every 8 weeks from weeks 14 to 46...
September 2, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28865482/decrease-in-bone-mineral-density-during-three-months-after-diagnosis-of-early-rheumatoid-arthritis-measured-by-digital-x-ray-radiogrammetry-predicts-radiographic-joint-damage-after-one-year
#11
Michael Ziegelasch, Kristina Forslind, Thomas Skogh, Katrine Riklund, Alf Kastbom, Ewa Berglin
BACKGROUND: Periarticular osteopenia is an early sign of incipient joint injury in rheumatoid arthritis (RA), but cannot be accurately quantified using conventional radiography. Digital X-ray radiogrammetry (DXR) is a computerized technique to estimate bone mineral density (BMD) from hand radiographs. The aim of this study was to evaluate whether decrease in BMD of the hands (BMD loss), as determined by DXR 3 months after diagnosis, predicts radiographic joint damage after 1 and 2 years in patients with early RA...
September 2, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28855496/a-retrospective-study-the-significance-of-combined-testing-of-serum-markers-for-diagnosis-of-rheumatoid-arthritis
#12
Fangxiang Mu, Hong Wu, Yong Wang
BACKGROUND There have been few studies on the value of various antibody combinations in rheumatoid arthritis (RA) diagnosis, and a lack of studies with large sample sizes, especially in the Chinese population. This study retrospectively evaluated the diagnostic value of a combined assay of five auto-antibodies [anti-cyclic citrullinated peptide (anti-CCP), anti-keratin (AKA), anti-RA 33, glucose-6-phosphate isomerase (GPI), and rheumatoid factor (RF)] for RA. MATERIAL AND METHODS Data were obtained from 5,725 patients with rheumatic diseases in Southwest Hospital of Chongqing from 2011 to 2014...
August 31, 2017: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/28853240/anti-carbamylated-protein-antibodies-presence-in-early-arthritis-with-a-poorer-clinical-and-radiological-outcome-data-from-the-french-espoir-cohort
#13
Marie-Elise Truchetet, Stéphanie Dublanc, Thomas Barnetche, Olivier Vittecoq, Xavier Mariette, Christophe Richez, Patrick Blanco, Michael Mahler, Cécile Contin-Bordes, Thierry Schaeverbeke
OBJECTIVES: To assess the prevalence of anti-carbamylated protein (CarP) antibodies in a French cohort of early arthritis and to investigate their association with clinical features, final diagnosis, prognosis and comorbidities. METHODS: The presence of anti-CarP antibodies among patients with early arthritis belonging to the ESPOIR French cohort (n=720) was determined using ELISA. We calculated the prevalence of anti-CarP antibodies in different patient subgroups that were stratified according to their anti-citrullinated peptides antibodies (ACPA) and/or rheumatoid factor (RF) status...
August 29, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28832223/local-bone-loss-in-patients-with-anti-citrullinated-peptide-antibody-and-arthralgia-evaluated-with-high-resolution-peripheral-quantitative-computed-tomography
#14
K K Keller, J S Thomsen, K Stengaard-Pedersen, A W Nielsen, B Schiøttz-Christensen, L Svendsen, M Graakjær, P M Petersen, B Unger, S G Kjær, B L Langdahl, E M Hauge
OBJECTIVE: To investigate bone changes in the metacarpophalangeal (MCP) joints of anti-citrullinated peptide antibody (ACPA)-positive patients with arthralgia, but not arthritis, compared to healthy controls. METHOD: Using a cross-sectional study design, patients were recruited from hospitals and private care rheumatologists, and controls from a test subject website. All subjects underwent medical history interview, clinical examination, and biochemical screening including ACPA...
August 23, 2017: Scandinavian Journal of Rheumatology
https://www.readbyqxmd.com/read/28826660/anti-citrullinated-peptide-antibodies-profiling-in-established-rheumatoid-arthritis
#15
Maria Laura Manca, Alessia Alunno, Claudia D'Amato, Onelia Bistoni, Ilaria Puxeddu, Roberto Gerli, Paola Migliorini, Federico Pratesi
OBJECTIVES: Anti-citrullinated protein/peptide antibodies (ACPA) represent an important tool for the diagnosis of rheumatoid arthritis (RA) and the presence of multiple ACPA specificities is highly correlated with the evolution towards RA. However, little is known about the association of single specificities with disease manifestations and response to therapy in established RA. The aim of this work is to evaluate in a retrospective study the clinico-serological association of ACPA detected using VCP1 and VCP2 (EBV-derived citrullinated peptides) and HCP1 and HCP2 (histone-H4-derived citrulinated peptides) in established RA...
August 4, 2017: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/28816989/disease-duration-of-rheumatoid-arthritis-is-a-predictor-of-vascular-stiffness-a-cross-sectional-study-in-patients-without-known-cardiovascular-comorbidities-a-strobe-compliant-article
#16
Mónica Vázquez-Del Mercado, Eduardo Gomez-Bañuelos, Efrain Chavarria-Avila, Ernesto Cardona-Muñoz, Carlos Ramos-Becerra, Adrián Alanis-Sanchez, David Cardona-Muller, Fernando Grover-Paez, Felipe de J Perez-Vazquez, Rosa-Elena Navarro-Hernandez, Jorge M Valadez-Soto, Adan A Saldaña-Millan, Lorena Gonzalez-Rosas, Gabriel Ramos-Lopez, Marcelo H Petri, Magnus Bäck
The aim of this study was to analyze the impact of disease duration on carotid to femoral pulse wave velocity (cfPWV) in rheumatoid arthritis (RA) patients without either known traditional cardiovascular risk factors or previous comorbidities.Patients with RA diagnosis attending the rheumatology outpatient clinic of Hospital Civil Juan I. Menchaca, Guadalajara, Mexico, were analyzed. A total of 106 RA patients without known traditional cardiovascular risk factors were selected. All subjects were evaluated for RA disease duration, RA disease activity score on 28 joints (DAS28), serum lipids, rheumatoid factor and anti-cyclic citrullinated peptide (anti-CCP) antibodies...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28816396/identification-of-novel-site-specific-alterations-in-the-modification-level-of-myelin-basic-protein-isolated-from-mouse-brain-at-different-ages-using-capillary-electrophoresis-mass-spectrometry
#17
Bettina Sarg, Klaus Faserl, Herbert H Lindner
Myelin basic protein (MBP) is a multifunctional protein involved in maintaining the stability and integrity of the myelin sheath by a variety of interactions with membranes and other proteins. MBP is subjected to extensive post-translational modifications (PTMs) that are known to be crucial for the regulation of these interactions. Here we report capillary electrophoresis-mass spectrometric (CE-MS) analysis for the separation and identification of MBP peptides that incorporate the same PTM at different sites, creating multiple localization variants, and the ability to analyze challenging modifications such as asparagine and glutamine deamidation, isomerization and arginine citrullination...
August 17, 2017: Proteomics
https://www.readbyqxmd.com/read/28814431/calprotectin-as-a-marker-of-inflammation-in-patients-with-early-rheumatoid-arthritis
#18
Maria Karolina Jonsson, Nina Paulshus Sundlisæter, Hilde Haugedal Nordal, Hilde Berner Hammer, Anna-Birgitte Aga, Inge Christoffer Olsen, Karl Albert Brokstad, Désirée van der Heijde, Tore K Kvien, Bjørg-Tilde Svanes Fevang, Siri Lillegraven, Espen A Haavardsholm
OBJECTIVES: Calprotectin is an inflammatory marker of interest in rheumatoid arthritis (RA). We evaluated whether the level of calprotectin was associated with disease activity, and if it was predictive of treatment response and radiographic progression in patients with early RA. METHODS: Plasma from disease-modifying antirheumatic drug (DMARD)-naïve patients with RA fulfilling 2010 American College of Rheumatology/European League Against Rheumatism classification criteria with symptom duration <2 years was analysed for calprotectin at baseline, and after 1, 3 and 12 months...
August 16, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28801345/molecular-basis-for-increased-susceptibility-of-indigenous-north-americans-to-seropositive-rheumatoid-arthritis
#19
Stephen W Scally, Soi-Cheng Law, Yi Tian Ting, Jurgen van Heemst, Jeremy Sokolove, Aaron J Deutsch, E Bridie Clemens, Antonis K Moustakas, George K Papadopoulos, Diane van der Woude, Irene Smolik, Carol A Hitchon, David B Robinson, Elizabeth D Ferucci, Charles N Bernstein, Xiaobo Meng, Vidyanand Anaparti, Tom Huizinga, Katherine Kedzierska, Hugh H Reid, Soumya Raychaudhuri, René E Toes, Jamie Rossjohn, Hani El-Gabalawy, Ranjeny Thomas
OBJECTIVE: The pathogenetic mechanisms by which HLA-DRB1 alleles are associated with anticitrullinated peptide antibody (ACPA)-positive rheumatoid arthritis (RA) are incompletely understood. RA high-risk HLA-DRB1 alleles are known to share a common motif, the 'shared susceptibility epitope (SE)'. Here, the electropositive P4 pocket of HLA-DRB1 accommodates self-peptide residues containing citrulline but not arginine. HLA-DRB1 His/Phe13β stratifies with ACPA-positive RA, while His13βSer polymorphisms stratify with ACPA-negative RA and RA protection...
August 11, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28794554/mucocutaneous-manifestations-in-patients-with-rheumatoid-arthritis-a-cross-sectional-study-from-eastern-india
#20
Sudip Kumar Ghosh, Debabrata Bandyopadhyay, Surajit Kumar Biswas, Ivoreen Darung
BACKGROUND: Cutaneous manifestations are fairly common in rheumatoid arthritis (RA) and they can help in early diagnosis, prompt treatment, and hence reduced morbidity from the disease. AIMS: The objective of the present study was to find out the different patterns of dermatoses in a group of patients with RA from Eastern India. METHODOLOGY: Consecutive patients fulfilling the American Rheumatism Association 1987 revised criteria for the classification of RA and who had different dermatoses were included in this cross-sectional study done over a period of 8 years in a tertiary care hospital in Eastern India...
July 2017: Indian Journal of Dermatology
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