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Serum citrulline

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https://www.readbyqxmd.com/read/29330439/induction-of-protein-citrullination-and-auto-antibodies-production-in-murine-exposed-to-nickel-nanomaterials
#1
Bashir M Mohamed, Noreen T Boyle, Anja Schinwald, Bruno Murer, Ronan Ward, Omar K Mahfoud, Tatsiana Rakovich, Kieran Crosbie-Staunton, Steven G Gray, Ken Donaldson, Yuri Volkov, Adriele Prina-Mello
Citrullination, or the post-translational deimination of polypeptide-bound arginine, is involved in several pathological processes in the body, including autoimmunity and tumorigenesis. Recent studies have shown that nanomaterials can trigger protein citrullination, which might constitute a common pathogenic link to disease development. Here we demonstrated auto-antibody production in serum of nanomaterials-treated mice. Citrullination-associated phenomena and PAD levels were found to be elevated in nanomaterials -treated cell lines as well as in the spleen, kidneys and lymph nodes of mice, suggesting a systemic response to nanomaterials injection, and validated in human pleural and pericardial malignant mesothelioma (MM) samples...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29330273/rheumatoid-disease-an-unusual-cause-of-relapsing-meningoencephalitis
#2
Sian K Alexander, Maria Di Cicco, Ute Pohl, Alberto Cifelli
A 73-year-old man presented with three episodes of dysphasia and disinhibited behaviour, a single seizure and transient ischaemic attack-like events characterised by right arm and/or leg weakness. These episodes were separated by month-long asymptomatic intervals. Medical history included rheumatoid arthritis, which was clinically quiescent on leflunomide.Repeated cerebrospinal fluid examination showed a persistent lymphocytosis with mildly reduced glucose and elevated protein; oligoclonal bands and viral PCR were negative...
January 12, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29286527/experience-of-correcting-endothelial-dysfunction-in-children-residents-of-radioactively-contaminated-areas-by-nitric-oxide-potential-donator-citrulline
#3
Ye I Stepanova, I Ye Kolpakov, V M Zygalo, V Yu Vdovenko, V H Kondrashova, O S Leonovich, V V Kryzhanivska
OBJECTIVE: to determine the effectiveness of citrulline use for correcting endothelial dysfunction in children resi dents of radioactively contaminated areas. MATERIALS AND METHODS: A group of children residents of radioactively contaminated areas with the presence of clinical and paraclinical signs of endothelial dysfunction was selected to assess the effectiveness of correcting endothelial dysfunction by the usage of NO potential donator - citrulline according to the data of selective screen ing...
December 2017: Problemy Radiat︠s︡iĭnoï Medyt︠s︡yny Ta Radiobiolohiï
https://www.readbyqxmd.com/read/29273071/profiling-micrornas-in-individuals-at-risk-of-progression-to-rheumatoid-arthritis
#4
L Ouboussad, L Hunt, E M A Hensor, J L Nam, N A Barnes, P Emery, M F McDermott, M H Buch
BACKGROUND: Individuals at risk of rheumatoid arthritis (RA) demonstrate systemic autoimmunity in the form of anti-citrullinated peptide antibodies (ACPA). MicroRNAs (miRNAs) are implicated in established RA. This study aimed to (1) compare miRNA expression between healthy individuals and those at risk of and those that develop RA, (2) evaluate the change in expression of miRNA from "at-risk" to early RA and (3) explore whether these miRNAs could inform a signature predictive of progression from "at-risk" to RA...
December 22, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/29273051/a-role-for-b-cells-in-organic-dust-induced-lung-inflammation
#5
Jill A Poole, Ted R Mikuls, Michael J Duryee, Kristi J Warren, Todd A Wyatt, Amy J Nelson, Debra J Romberger, William W West, Geoffrey M Thiele
BACKGROUND: Agriculture organic dust exposures induce lung disease with lymphoid aggregates comprised of both T and B cells. The precise role of B cells in mediating lung inflammation is unknown, yet might be relevant given the emerging role of B cells in obstructive pulmonary disease and associated autoimmunity. METHODS: Using an established animal model, C57BL/6 wild-type (WT) and B-cell receptor (BCR) knock-out (KO) mice were repetitively treated with intranasal inhalation of swine confinement organic dust extract (ODE) daily for 3 weeks and lavage fluid, lung tissues, and serum were collected...
December 22, 2017: Respiratory Research
https://www.readbyqxmd.com/read/29259607/associations-between-viral-infection-history-symptoms-granulocyte-reactive-oxygen-species-activity-and-active-rheumatoid-arthritis-disease-in-untreated-women-at-onset-results-from-a-longitudinal-cohort-study-of-tatarstan-women
#6
Marina I Arleevskaya, Albina Z Shafigullina, Yulia V Filina, Julie Lemerle, Yves Renaudineau
To evaluate the effects of infectious episodes at early stages of rheumatoid arthritis (eRA) development, 59 untreated eRA patients, 77 first-degree relatives, from a longitudinal Tatarstan women cohort, were included, and compared to 67 healthy women without rheumatoid arthritis (RA) in their family history. At inclusion, informations were collected regarding both the type and incidence of infectious symptom episodes in the preceding year, and granulocyte reactive oxygen species (ROS) were studied at the basal level and after stimulation with serum-treated zymosan (STZ)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29258187/usefulness-of-amino-acid-profiling-in-ovarian-cancer-screening-with-special-emphasis-on-their-role-in-cancerogenesis
#7
Szymon Plewa, Agnieszka Horała, Paweł Dereziński, Agnieszka Klupczynska, Ewa Nowak-Markwitz, Jan Matysiak, Zenon J Kokot
The aim of this study was to quantitate 42 serum-free amino acids, propose the biochemical explanation of their role in tumor development, and identify new ovarian cancer (OC) biomarkers for potential use in OC screening. The additional value of this work is the schematic presentation of the interrelationship between metabolites which were identified as significant for OC development and progression. The liquid chromatography-tandem mass spectrometry technique using highly-selective multiple reaction monitoring mode and labeled internal standards for each analyzed compound was applied...
December 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29227683/discovery-of-peptidomimetic-antibody-drug-conjugate-linkers-with-enhanced-protease-specificity
#8
Binqing Wei, Janet Gunzner-Toste, Hui Yao, Tao Wang, Jing Wang, Zijin Xu, Jinhua Chen, John Wai, Jim Nonomiya, Siao Ping Tsai, Josefa Dela Cruz-Chuh, Katherine Ruth Kozak, Yichin Liu, Shang-Fan Yu, Jeff Lau, Guangmin Li, Gail D Lewis Phillips, Doug Leipold, Amrita Kamath, Dian Su, Keyang Xu, Charles Eigenbrot, Stefan Steinbacher, Rachana Ohri, Helga Raab, Leanna R Staben, Guiling Zhao, John A Flygare, Thomas H Pillow, Vishal Verma, Brian Salvatore Safina
Antibody-Drug Conjugates (ADCs) have become an important therapeutic modality for oncology, with three approved by the FDA and over 60 others in clinical trials. Despite the progress, improvements in ADC therapeutic index are desired. Peptide-based ADC linkers that are cleaved by lysosomal proteases have shown sufficient stability in serum, and effective payload-release in targeted cells. If the linker can be preferentially hydrolyzed by tumor-specific proteases, safety margin may improve. However, the use of peptide-based linkers limits our ability to modulate protease specificity...
December 11, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29221127/long-noncoding-rnas-expression-profile-and-functional-networks-in-rheumatoid-arthritis
#9
Donghua Xu, Ye Jiang, Lu Yang, Xixing Hou, Jihong Wang, Weijun Gu, Xiaodong Wang, Lanyu Liu, Juan Zhang, Hongying Lu
The modifying effects of long noncoding RNAs (lncRNAs) in rheumatoid arthritis (RA) recently have drawn much attention; however, the underlying mechanisms remain largely unknown. Herein, we aim to investigate the expression profile of lncRNAs in RA and identify promising targets for RA diagnosis and treatment. Microarray screening and real-time PCR of lncRNAs were performed by use of serum samples from 3 RA patients and 3 healthy controls. Significantly differentially expressed lncRNAs were verified in serum samples from 43 RA patients and 40 healthy controls by real-time PCR...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29200020/sputum-anticitrullinated-protein-antibodies-in-patients-with-long-standing-rheumatoid-arthritis
#10
Ari Polachek, Wilma Vree Egberts, Elizabeth Fireman, Ido Druckman, Moshe Stark, Daphna Paran, Ilana Kaufman, Irena Wigler, David Levartovsky, Dan Caspi, Ger J M Pruijn, Ori Elkayam
OBJECTIVE: The aim of this study was to evaluate the presence of autoantibodies to cyclic citrullinated synthetic peptides (ACPAs) in the sputum of patients with long-standing rheumatoid arthritis (RA). METHODS: Nineteen consecutive RA patients and 16 age- and sex-matched control subjects participated in this cross-sectional study. All underwent complete lung function tests and provided induced sputum. Antibodies to citrullinated (CitP) and the corresponding norleucine-containing (NorP) peptides in the sputum of the RA patients and control subjects, as well as in the serum of the RA patients, were determined by enzyme-linked immunosorbent assay...
December 1, 2017: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/29196382/relatedness-of-antibodies-to-peptides-containing-homocitrulline-or-citrulline-in-patients-with-rheumatoid-arthritis
#11
Patrick Lac, Maud Racapé, Lillian Barra, David A Bell, Ewa Cairns
OBJECTIVE: Antibodies that target citrullinated protein/peptide (ACPA) and homocitrullinated/carbamylated protein/peptide (AHCPA) are associated with rheumatoid arthritis (RA). The relationship between ACPA and AHCPA remains unclear. We examined the expression and cross-reactivity of these antibodies using citrulline- and homocitrulline-containing synthetic peptides, CitJED and HomoCitJED, respectively, which have equal numbers of citrulline or homocitrulline residues on the same peptide backbone...
December 1, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/29185111/factors-influencing-spinal-sagittal-balance-bone-mineral-density-and-oswestry-disability-index-outcome-measures-in-patients-with-rheumatoid-arthritis
#12
Kazutaka Masamoto, Bungo Otsuki, Shunsuke Fujibayashi, Koichiro Shima, Hiromu Ito, Moritoshi Furu, Motomu Hashimoto, Masao Tanaka, Stephen Lyman, Hiroyuki Yoshitomi, Shimei Tanida, Tsuneyo Mimori, Shuichi Matsuda
PURPOSE: To identify the factors influencing spinal sagittal alignment, bone mineral density (BMD), and Oswestry Disability Index (ODI) outcome measures in patients with rheumatoid arthritis (RA). METHODS: We enrolled 272 RA patients to identify the factors influencing sagittal vertical axis (SVA). Out of this, 220 had evaluation of bone mineral density (BMD) and vertebral deformity (VD) on the sagittal plane; 183 completed the ODI questionnaire. We collected data regarding RA-associated clinical parameters and standing lateral X-ray images via an ODI questionnaire from April to December 2012 at a single center...
November 28, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29174174/significant-association-of-rheumatoid-arthritis-related-inflammatory-markers-with%C3%A2-non-surgical-periodontal-therapy
#13
Ning-Ya Yang, Chen-Ying Wang, I-Tsu Chyuan, King-Jean Wu, Yu-Kang Tu, Ching-Wen Chang, Ping-Ning Hsu, Mark Yen-Ping Kuo, Yi-Wen Chen
BACKGROUND/PURPOSE: Chronic periodontitis (CP) and rheumatoid arthritis (RA) are the most common chronic inflammatory diseases and their immunopathogenesis is similar. The aim of this study was to evaluate the effect of non-surgical periodontal treatment on the serum levels of RA-related inflammatory markers in patients with chronic periodontitis. METHODS: Thirty-one Taiwanese adults with CP were included. Demographics and periodontal parameters, including probing depth, clinical attachment level, and number of remaining teeth in the oral cavity, were recorded...
November 22, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/29166915/serum-connective-tissue-growth-factor-is-a-highly-discriminatory-biomarker-for-the-diagnosis-of-rheumatoid-arthritis
#14
Xinyu Yang, Ke Lin, Shanmin Ni, Jianmin Wang, Qingqing Tian, Huaijun Chen, Matthew A Brown, Kaidi Zheng, Weitao Zhai, Li Sun, Shengwei Jin, Jianguang Wang
BACKGROUND: Our previous proteomic study indicated that connective tissue growth factor (CTGF) may be a potential biomarker for rheumatoid arthritis (RA) diagnosis. The aim was to assess the performance of CTGF as a biomarker of RA. METHOD: Serum and synovial fluid CTGF was detected using a direct high sensitivity sandwich ELISA kit. Serum CTGF levels were tested for discriminatory capacity and optimal assay cutoffs determined in a training cohort of 98 cases of RA with 103 healthy controls...
November 22, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/29164814/a-thrombin-receptor-derived-imaging-agent-detects-subclinical-arthritis-in-mice
#15
Beth Friedman, Michael A Whitney, Elamprakash N Savariar, Christa Caneda, Paul Steinbach, Qing Xiong, Dina V Hingorani, Jessica Crisp, Stephen R Adams, Michael Kenner, Csilla N Lippert, Quyen T Nguyen, Monica Guma, Roger Y Tsien, Maripat Corr
OBJECTIVE: Functional imaging of synovitis could improve both early detection of rheumatoid arthritis (RA) and long-term outcomes. Motivated by the intersection of inflammation with coagulation protease activation, we examine coagulation protease activities in arthritic mice with a dual fluorescent Ratiometric thrombin-Activatable Cell Penetrating Peptide (RACPPNleTPRSFL ). METHOD: Mice with chronic transgenic K/BxN arthritis, or with arthritis on Day 1 of passive serum transfer induced arthritis (STIA), were imaged in vivo for Cy5 em: Cy7 em ratiometric fluorescence from proteolytic cleavage and activation of RACPPNleTPRSFL ...
November 22, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29154733/metabolomic-analysis-of-alterations-in-lipid-oxidation-carbohydrate-and-amino-acid-metabolism-in-dairy-goats-caused-by-exposure-to-aflotoxin-b1
#16
Jianbo Cheng, Shuai Huang, Caiyun Fan, Nan Zheng, Yangdong Zhang, Songli Li, Jiaqi Wang
The purposes of this study were to investigate the systemic and characteristic metabolites in the serum of dairy goats induced by aflatoxin B1 (AFB1) exposure and to further understand the endogenous metabolic alterations induced by it. A nuclear magnetic resonance (NMR)-based metabonomic approach was used to analyse the metabolic alterations in dairy goats that were induced by low doses of AFB1 (50 µg/kg DM). We found that AFB1 exposure caused significant elevations of glucose, citrate, acetate, acetoacetate, betaine, and glycine yet caused reductions of lactate, ketone bodies (acetate, β-hydroxybutyrate), amino acids (citrulline, leucine/isoleucine, valine, creatine) and cell membrane structures (choline, lipoprotein, N-acetyl glycoproteins) in the serum...
November 2017: Journal of Dairy Research
https://www.readbyqxmd.com/read/29151415/-diagnostic-value-of-citrulline-and-intestinal-fatty-acid-binding-protein-on-acute-gastrointestinal-injury-in-critical-patients-a-prospective-study-of-530-patients
#17
Jing Wang, Limei Yu, Yonghong Xia, Yanling Gao, Wenbo Yu, Haihong Sun, Yizhu Sun
OBJECTIVE: To observe the incidence of acute gastrointestinal injury (AGI) in intensive care unit (ICU) patients, and to approach the value of serum citrulline and intestinal fatty acid binding protein (IFABP) on diagnosis of AGI in critical patients. METHODS: A prospective study was conducted. 576 critical patients admitted to ICU of Yantai Yuhuangding Hospital from February 2016 to February 2017 were enrolled. According to the AGI classification proposed by European Society of Intensive Care Medicine (ESICM) in 2012, the AGI and severity of the patients were observed...
November 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
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
#18
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
#19
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
#20
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
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