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Serum citrulline

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https://www.readbyqxmd.com/read/29148420/the-expression-of-mrna-for-peptidylarginine-deiminase-type-2-and-type-4-in-bone-marrow-cd34-cells-in-rheumatoid-arthritis
#1
Tatsuo Nagai, Yu Matsueda, Tetsuya Tomita, Hideki Yoshikawa, Shunsei Hirohata
OBJECTIVES: Antibodies directed to citrullinated proteins are highly specific for rheumatoid arthritis (RA). Citrullination is catalyzed by peptidylarginine deiminase (PAD) enzymes. The current study examined the mRNA expression of PADI2 and PADI4 in bone marrow (BM) CD34+ cells from RA patients. METHODS: CD34+ cells were purified from BM samples obtained from 48 RA patients and from 30 osteoarthritis (OA) patients during joint operations via aspiration from the iliac crest...
November 14, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29128424/the-use-of-synthetic-peptides-for-detection-of-anti-citrullinated-protein-antibodies-in-rheumatoid-arthritis
#2
Nicole Hartwig Trier, Bettina Eide Holm, Julie Heiden, Ole Slot, Henning Locht, Bente Jensen, Hanne Lindegaard, Anders Svendsen, Christoffer Tandrup Nielsen, Søren Jacobsen, Elke Theander, Gunnar Houen
Rheumatoid arthritis (RA) is an autoimmune disease of unknown etiology. A characteristic feature of RA is the presence of anti-citrullinated protein antibodies (ACPA). Since ACPAs are highly specific for RA and are often present before the onset of RA symptoms, they have become valuable diagnostic and prognostic. As a result, several assays for detection of ACPAs exist, which vary in sensitivity and specificity. In this study, we analyzed the reactivity of RA sera to selected peptides by solid-phase immunoassays in order to develop an ACPA assay with improved sensitivity and specificity...
November 8, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/29106059/increased-levels-of-neutrophil-extracellular-trap-remnants-in-the-serum-of-patients-with-rheumatoid-arthritis
#3
Wei Wang, Wanchan Peng, Xingwang Ning
AIMS: Neutrophil extracellular traps (NETs) comprise a unique form of non-apoptotic cell death exhibited by neutrophils, which occurs in a stepwise process termed NETosis. It has been postulated that NETosis plays an important role in the pathogenesis of autoimmune disorders. The aim of this study was to evaluate serum levels of NET remnants in patients with rheumatoid arthritis (RA), as well as potential associations between NET remnants and indicators of RA. METHODS: Serum levels of myeloperoxidase (MPO)-DNA complexes (NET remnants) were examined in 74 RA patients and 50 healthy controls using a modified enzyme-linked immunosorbent assay...
November 6, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/29100030/plasma-biomarker-discovery-for-early-chronic-kidney-disease-diagnosis-based-on-chemometric-approaches-using-lc-qtof-targeted-metabolomics-data
#4
S Benito, A Sánchez-Ortega, N Unceta, J J Jansen, G Postma, F Andrade, L Aldámiz-Echevarria, L M C Buydens, M A Goicolea, R J Barrio
Chronic kidney disease (CKD) is a progressive pathological condition in which renal function deteriorates in time. The first diagnosis of CKD is often carried out in general care attention by general practitioners by means of serum creatinine (CNN) levels. However, it lacks sensitivity and thus, there is a need for new robust biomarkers to allow the detection of kidney damage particularly in early stages. Multivariate data analysis of plasma concentrations obtained from LC-QTOF targeted metabolomics method may reveal metabolites suspicious of being either up-regulated or down-regulated from urea cycle, arginine methylation and arginine-creatine metabolic pathways in CKD pediatrics and controls...
October 29, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29096669/anti-carbamylated-protein-antibodies-precede-disease-onset-in-monkeys-with-collagen-induced-arthritis
#5
Marije K Verheul, Michel P M Vierboom, Bert A 't Hart, Rene E M Toes, Leendert A Trouw
BACKGROUND: Rheumatoid factor (RF), anti-citrullinated protein antibodies (ACPA) and anti-carbamylated protein (anti-CarP) antibodies are rheumatoid arthritis (RA)-associated autoantibodies. Besides their presence in human serum, anti-CarP antibodies have also been described in rodent models of arthritis, while ACPA are not consistently detectable. Data on these RA-associated autoantibodies in primates are not available. Therefore, we investigated the presence of RF, anti-CarP antibodies and ACPA in rhesus monkeys before and after collagen-induced arthritis immunizations...
November 2, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/29069018/thyroid-disorders-in-patients-with-newly-diagnosed-rheumatoid-arthritis-is-associated-with-poor-initial-treatment-response-evaluated-by-disease-activity-score-in-28-joints-c-reactive-protein-das28-crp-an-observational-cohort-study
#6
Amir Emamifar, Jørgen Hangaard, Inger Marie Jensen Hansen
To determine the prevalence of thyroid disorders among newly diagnosed rheumatoid arthritis (RA) patients and evaluate the association between clinical characteristics of RA and thyroid disorders, and also initial treatment response in the RA patients with thyroid disorders.Newly diagnosed, adult RA patients who were diagnosed according to the new 2010 American College of Rheumatology/European League Against Rheumatism criteria since January 1, 2010, were included. Patients' demographic data, serology results including immunoglobulin M rheumatoid factor (IgM RF), anticyclic citrullinated peptide antibody (anti-CCP), and antinuclear antibody (ANA), and also disease activity score in 28 joints-C-reactive protein at the time of diagnosis and after 4 months (±1-2 months) of treatment initiation were extracted from Danish Danbio Registry...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29068601/rheumatoid-factor-and-anti-cyclic-citrullinated-peptide-anti-ccp-antibodies-with-hepatitis-b-and-hepatitis-c-infection-review
#7
Orhan Zengin, Hamit Yıldız, Zeynep Hanım Demir, Muhammed Sait Dağ, Musa Aydınlı, Ahmet Mesut Onat, Bünyamin Kısacık
BACKGROUND: Viruses are common and are involved in the etiology of idiopathic rheumatological diseases. Hepatitis B virus (HBV), a member of the family Hepadnaviridae and hepatitis C virus (HCV), play an important role in the undetermined etiology of arthritis. The clinical manifestations of hepatitis B and C show similarities with various diseases, such as rheumatic diseases. Anti-cyclic citrullinated peptide (anti-CCP) is a specific serological marker for rheumatoid arthritis. OBJECTIVES: The aim of this study was to analyze anti-CCP and rheumatoid factor (RF) levels in patients with a hepatitis B and C infection...
September 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28984785/intestinal-fatty-acid-binding-protein-and-citrulline-as-markers-of-gut-injury-and-prognosis-in-patients-with-acute-pancreatitis
#8
Pooja Goswami, Ujjwal Sonika, Praneeth Moka, Vishnubhatla Sreenivas, Anoop Saraya
OBJECTIVES: Severe acute pancreatitis (AP) is associated with high mortality due to systemic inflammatory response syndrome in the early phase and secondary infection in the later phase. Concomitant intestinal ischemia often results in gut injury. We studied intestinal fatty acid binding protein (IFABP) and citrulline levels as markers of gut injury to predict prognosis in AP. METHODS: Acute pancreatitis patients at admission and controls were studied. Serum IFABP was measured by enzyme-linked immunosorbent assay and plasma citrulline by high-performance liquid chromatography technique...
November 2017: Pancreas
https://www.readbyqxmd.com/read/28972432/interleukin-34-promotes-fibrocyte-proliferation
#9
Carole L Galligan, Eleanor N Fish
Rheumatoid arthritis (RA) is a systemic autoimmune disease affecting multiple joints. It remains unclear which factors in the circulation are associated with the systemic spread of the disease. Fibrocytes are pluripotent mesenchymal stem cells present in the circulation of RA patients. Our earlier findings implicated activated fibrocytes in the etiology of onset and pathogenesis of RA. Elevated levels of interleukin-34 (IL-34) in the serum and synovial fluid of RA patients are associated with rheumatoid factor and anticyclic citrullinated peptide antibodies, indicators of RA...
October 2017: Journal of Interferon & Cytokine Research
https://www.readbyqxmd.com/read/28962582/low-levels-of-antibodies-against-common-viruses-associate-with-anti-citrullinated-protein-antibody-positive-rheumatoid-arthritis-implications-for-disease-aetiology
#10
Natalia Sherina, Hulda S Hreggvidsdottir, Camilla Bengtsson, Monika Hansson, Lena Israelsson, Lars Alfredsson, Karin Lundberg
BACKGROUND: Infection by common viruses has long been discussed in the aetiology of a number of autoimmune diseases, including rheumatoid arthritis (RA). However, studies investigating this hypothesis in RA show conflicting results. These studies often lack well-matched control populations, and many do not include data on autoantibodies, genetic risk factors and other environmental factors, which are known to contribute to disease only in subgroups of patients. In the present study, we have therefore examined the role of Epstein-Barr virus (EBV), cytomegalovirus (CMV) and parvovirus B19 (B19) in RA aetiology, by analysing anti-viral antibodies in relation to anti-citrullinated protein antibodies (ACPA), smoking, HLA-DRB1 shared epitope (SE) alleles, and clinical parameters, in both RA patients and matched controls...
September 30, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28957552/enrichment-of-malondialdehyde-acetaldehyde-antibody-in-the-rheumatoid-arthritis-joint
#11
Ted R Mikuls, Michael J Duryee, Rafid Rahman, Daniel R Anderson, Harlan R Sayles, Andrew Hollins, Kaleb Michaud, Frederick Wolfe, Geoffrey E Thiele, Jeremy Sokolove, William H Robinson, Nithya Lingampalli, Anthony P Nicholas, Geoffrey A Talmon, Kaihong Su, Matthew C Zimmerman, Lynell W Klassen, Geoffrey M Thiele
Objective: To characterize the expression of malondialdehdye-acetaldehyde (MAA) adducts and anti-MAA antibody in articular tissues and serum of patients with RA. Methods: Paired sera and SF were examined from 29 RA and 13 OA patients. Anti-MAA antibody, RF, ACPA and total immunoglobulin were quantified. SF-serum measures were compared within and between disease groups. The presence and co-localization of MAA, citrulline and select leukocyte antigens in RA and OA synovial tissues were examined using immunohistochemistry...
October 1, 2017: Rheumatology
https://www.readbyqxmd.com/read/28945050/decreased-nitric-oxide-serum-level-after-pituitary-adenoma-resection
#12
Daniel Babula, Anna Horecka, Dorota Luchowska-Kocot, Joanna Kocot, Jacek Kurzepa
BACKGROUND: Nitric oxide (NO) is synthesized by the conversion of Arginine (Arg) into the NO and Citrulline (Cit). Although the NO is involved into the pathogenesis of several physiological and pathological processes, the role of NO in pituitary adenomas (PA) progres-sion is not determined. Our purpose was to evaluate the relationship between NO and PA as well as the effect of tumor resection on NO metabolites level in serum. METHODS: The study group consisted of 21 patients with PA, 18 patients with macroade-nomas and 3 with microadenomas...
September 22, 2017: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/28939132/peak-hyperammonemia-and-atypical-acute-liver-failure-the-eruption-of-an-urea-cycle-disorder-during-hyperemesis-gravidarum
#13
REVIEW
Nicolas Weiss, Fanny Mochel, Marika Rudler, Sophie Demeret, Pascal Lebray, Filomena Conti, Damien Galanaud, Chris Ottolenghi, Jean-Paul Bonnefont, Marc Dommergues, Jacques Bernuau, Dominique Thabut
BACKGROUND: Inborn urea cycle deficiencies are under-recognized metabolic causes of hyperammonaemia in adults. METHODS: A 28-year-old primigravida, 7-week pregnant woman affected by hyperemesis gravidarum developed acute liver injury and then acute liver failure (ALF) in less than 48 hours. RESULTS: Because the patient developed atypical features, especially mildly elevated serum transaminases contrasting with very high blood ammonia levels (281 μmol/l), concomitant with normal serum creatinine, an inborn error of metabolism was suspected...
September 19, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28932306/prevalence-of-asymptomatic-arterial-hypertension-and-its-correlation-with-inflammatory-activity-in-early-rheumatoid-arthritis
#14
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/28911876/immunoglobulin-isotype-switching-of-antibodies-to-vimentin-is-associated-with-development-of-transplant-glomerulopathy-following-human-renal-transplantation
#15
Muthukumar Gunasekaran, Thin Thin Maw, Rowena Delos Santos, Surendra Shenoy, Jason Wellen, T Mohanakumar
BACKGROUND: Immune responses to tissue-restricted self-antigens are thought to play a role in chronic rejection after solid organ transplantation. De novo development of antibodies (Abs) to vimentin have been reported to be associated with interstitial fibrosis/tubular atrophy after kidney transplant, and it has been suggested that immunoglobulin isotype switching of Abs to vimentin may occur during this process. We aimed to determine the correlation between immunoglobulin isotype switching of Abs to vimentin and development of transplant glomerulopathy (TG) after kidney transplant, and to determine whether citrullinated modification of vimentin is required for de novo anti-vimentin development...
September 11, 2017: Transplant Immunology
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
#16
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/28886586/a-murine-ig-light-chain-transgene-reveals-igkv3-gene-contributions-to-anti-collagen-types-iv-and-ii-specificities
#17
Amy G Clark, Inge M Worni-Schudel, Francesca M Korte, Mary H Foster
A subset of autoimmune diseases result from autoantibodies targeting epitopes on matrix collagen. The most extensively studied are anti-glomerular basement membrane glomerulonephritis (or its systemic counterpart Goodpasture's disease) that destroys kidneys and lungs, and rheumatoid arthritis that leads to disabling arthritis. Autoantibodies in these disorders bind evolutionarily conserved conformational epitopes on the noncollagenous domain 1 (NC1) of the alpha3 chain of type IV [alpha3(IV)NC1] collagen in glomerular and alveolar basement membranes, and on native or citrullinated type II collagen (CII) in joint cartilage, respectively...
November 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28881747/excessive-matrix-metalloprotease-mediated-degradation-of-interstitial-tissue-type-i-collagen-independently-predicts-short-term-survival-in-an-observational-study-of-postmenopausal-women-diagnosed-with-cancer
#18
Nicholas Willumsen, Cecilie L Bager, Stephanie N Kehlet, Katrine Dragsbaek, Jesper S Neergaard, Henrik B Hansen, Anne-Christine Bay-Jensen, Diana J Leeming, Allan Lipton, Claus Christiansen, Morten Karsdal
Extensive tissue remodeling mediated by matrix metalloproteases (MMPs) is an important part of cancer. The aim of this study was to investigate whether serum biomarkers reflecting MMP-mediated degradation of type I collagen (C1M), type IV collagen (C4M) and citrullinated vimentin (VICM) were predictive of cancer-specific mortality. Between 1999 and 2001, 5855 Danish postmenopausal women participated in The Prospective Epidemiologic Risk Factor (PERF I) study. Demographics and serum samples were collected at enrolment...
August 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28871954/-elevated-serum-il-25-levels-in-rheumatoid-arthritis-patients-with-bone-erosion-and-interstitial-lung-disease
#19
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
#20
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]
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