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Citrullination

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https://www.readbyqxmd.com/read/28538181/malate-and-aspartate-increase-l-arginine-and-nitric-oxide-and-attenuate-hypertension
#1
Entai Hou, Na Sun, Fuchang Zhang, Chenyang Zhao, Kristie Usa, Mingyu Liang, Zhongmin Tian
Fumarase catalyzes the interconversion of fumarate and L-malate in the tricarboxylic acid cycle. The Dahl salt-sensitive (SS) rat, a model of salt-sensitive hypertension, exhibits fumarase insufficiencies. To investigate the mechanism mediating the effect of fumarase-related metabolites on hypertension, we considered the pathway in which L-malate can be converted to oxaloacetate, aspartate, argininosuccinate, and L-arginine, the substrate of nitric oxide (NO) synthase. The levels of aspartate, citrulline, L-arginine, and NO were significantly decreased in the kidneys of SS rats compared to salt-insensitive consomic SS...
May 23, 2017: Cell Reports
https://www.readbyqxmd.com/read/28536076/polyarginine-and-its-analogues-inhibit-p53-mutant-aggregation-and-cancer-cell-proliferation-in-vitro
#2
Zhaolin Chen, Jun Chen, Venkateshwar G Keshamouni, Mathumai Kanapathipillai
Arginine, a cationic amino acid is known to stabilize proteins under harsh conditions. It is widely used to stabilize protein aggregation, and to correct protein folding during protein production. Hence it would be a good therapeutic candidate for treating protein aggregation related diseases. Recent reports suggest, that the aggregation of tumor suppressor protein p53 is one of the leading causes of tumor progression. When mutated, p53 protein aggregates, loses its function leading to unwanted cell growth and ultimately results in tumor...
May 20, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28535888/independence-of-carbohydrate-deficient-isoforms-of-transferrin-and-cyclic-citrullinated-peptides-in-rheumatoid-arthritis
#3
Monika Gudowska, Ewa Gindzienska-Sieskiewicz, Ewa Gruszewska, Bogdan Cylwik, Stanislaw Sierakowski, Maciej Szmitkowski, Lech Chrostek
OBJECTIVE: The aim of this study was to assess the relationship between the two types of posttranslational modifications of proteins in RA: glycosylation on the example of carbohydrate-deficient transferrin and citrullination by means of autoantibodies to cyclic citrullinated peptides. METHODS: The study was carried out in 50 RA patients. CDT was measured using N Latex CDT immunonephelometric test, the results were presented in absolute and relative units. Anti-CCP were measured using the chemiluminescent method and rheumatoid factor by immunoturbidimetric method...
May 2017: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/28532395/factors-associated-with-hand-joint-destruction-in-chinese-patients-with-rheumatoid-arthritis
#4
Lijuan Zhang, Jing Wang, Qiuxiang Zhang, Ting Fu, Rulan Yin, Ze Wang, Liren Li, Xianhua Wu, Zhifeng Gu
BACKGROUND: There have been no previous report of hand joint destruction prevalence in Chinese rheumatoid arthritis (RA) patients. Therefore, the aim of this study was to investigate the prevalence and potential factors of hand joint destruction among RA patients from Nantong China. In addition, we wanted to examine the differences between functional capacity, psychological status, and quality of life in patients with hand joint destruction compared to those without hand joint destruction...
May 22, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28530563/effect-of-gallic-and-protocatechuic-acids-on-the-metabolism-of-ethyl-carbamate-in-chinese-yellow-rice-wine-brewing
#5
Wanyi Zhou, Ruosi Fang, Qihe Chen
It was studied that gallic and protocatechuic acids played important roles in ethyl carbamate (EC) forming. Gallic and protocatechuic acids can reduce the arginine consumption through inhibiting the arginine deiminase enzyme. Therefore, they are generally added to regulate EC catabolism in the course of yellow rice wine leavening at the third day. In this work, gallic and protocatechuic acids made little influence on the growth of Saccharomyces cerevisiae. Besides, the addition of 200mg/L gallic or protocatechuic acid could prevent the transformation from urea/citrulline to EC...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28529592/unique-insight-into-microenvironmental-changes-in-colorectal-cancer-ex-vivo-assessment-of-matrix-metalloprotease-mediated-molecular-changes-in-human-colorectal-tumor-tissue-and-corresponding-non-neoplastic-adjacent-tissue
#6
Nicholas Willumsen, Cecilie L Bager, Anne-Christine Bay-Jensen, Stephanie N Kehlet, Henrik Harling, Diana J Leeming, Morten A Karsdal, Lars N Jorgensen
Matrix metalloprotease (MMP)-mediated tissue remodeling is one of the malignant changes driving colorectal cancer. Measurement of altered MMP expression/activity is not sufficient to fully understand the effect of MMP-mediated tissue remodeling. Biomarkers are required that specifically reflect the dynamic processes of the MMP-mediated degradation of signature proteins from colorectal tissue. The aim of the present study was to profile and characterize the release of MMP-degraded type III collagen (C3M) and citrullinated and MMP-degraded vimentin (VICM) from tumor tissue and corresponding non-neoplastic adjacent tissue (NAT) in a human colorectal cancer ex vivo model...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28527056/pathogenesis-of-chronic-cluster-headache-and-bouts-role-of-tryptamine-arginine-metabolism-and-%C3%AE-1-agonists
#7
G D'Andrea, G Bussone, P Di Fiore, F Perini, A Gucciardi, A Bolner, M Aguggia, G Saracco, E Galloni, G Giordano, A Leon
The aim of this study was to explore the possible role of tryptamine in the pathogenesis of chronic cluster headache along with that of adrenaline and noradrenaline (α-agonists) together with arginine metabolism in the origin of cluster bouts. Plasma levels of tyramine, tryptamine, serotonin, 5-hydroxyindolacetic acid, noradrenalin, adrenalin and the markers of arginine metabolism such as arginine, homoarginine, citrulline, ADMA and NMMA, were measured in 23 chronic cluster headache patients (10 chronic cluster ab initio and 13 transformed from episodic cluster) and 28 control subjects...
May 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28526580/biomarkers-for-rheumatoid-arthritis-from-molecular-processes-to-diagnostic-applications-current-concepts-and-future-perspectives
#8
REVIEW
Britt Nakken, Gábor Papp, Vidar Bosnes, Margit Zeher, György Nagy, Peter Szodoray
Early diagnosis and immediately started appropriate treatment are mandatory for the prevention of radiographic progression, functional disability and unfavourable disease outcome in rheumatoid arthritis (RA). The current classification criteria for RA include two different types of biomarkers representing inflammatory processes, such as C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) or immune processes including autoantibodies, such as rheumatoid factor (RF) and antibodies against citrullinated proteins (ACPA)...
May 16, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28526389/citrulline-stimulates-locomotor-activity-in-aged-rats-implication-of-the-dopaminergic-pathway
#9
Christophe Moinard, Laurent Tliba, Jorge Diaz, Servane Le Plénier, Laure Nay, Nathalie Neveux, Luc Cynober, Agathe Raynaud-Simon
OBJECTIVES: A citrulline (CIT)-enriched diet improves locomotor activity in aged rats, but the underlying mechanism is unknown. The aim of this study was to determine the effect of CIT administration on locomotor activity and dopamine activity in healthy aged rats. METHODS: Sixty adult (3-mo-old) and aged (20-mo-old) rats were divided into four groups (n = 15 each) stratified by age (adult versus old) and diet (control versus CIT; i.e., Ad-Control, Ad-CIT, Old-Control, Old-CIT) and fed for 4 d on either a CIT-enriched diet (5 g/kg daily; Ad-CIT and Old-CIT) or an isonitrogeneous control diet (Ad-Control and Old-Control)...
June 2017: Nutrition
https://www.readbyqxmd.com/read/28525857/industrial-air-emissions-and-proximity-to-major-industrial-emitters-are-associated-with-anti-citrullinated-protein-antibodies
#10
Sasha Bernatsky, Audrey Smargiassi, Lawrence Joseph, Phillip Awadalla, Ines Colmegna, Marie Hudson, Marvin J Fritzler
OBJECTIVE: To determine the association of anti-citrullinated antibodies (ACPA) with the ambient air pollutants fine particulate matter (PM2.5) and sulfur dioxide (SO2). METHODS: The CARTaGENE first-wave cohort includes 20,000 general population subjects from Quebec (Canada). On a sample of unselected 1586 subjects, we determined serum, ACPA and performed multivariable logistic regression, for the outcome of positive ACPA, assessing for independent effects of our air pollution variables, adjusting for age, sex, smoking, and French Canadian origin...
May 16, 2017: Environmental Research
https://www.readbyqxmd.com/read/28523279/increased-neutrophil-extracellular-trap-formation-in-uremia-is-associated-with-chronic-inflammation-and-prevalent-coronary-artery-disease
#11
Jwa-Kyung Kim, Chang-Won Hong, Mi Jin Park, Young Rim Song, Hyung Jik Kim, Sung Gyun Kim
Background. Neutrophils are involved in the pathogenesis of atherosclerosis by neutrophil extracellular trap (NET) formation. We hypothesized that the NET formation of neutrophils might be changed in end-stage renal disease (ESRD) patients, explaining their higher incidence of coronary artery diseases (CAD). Method. A cross-sectional study was performed in 60 maintenance hemodialysis (MHD) patients, 30 age- and sex-matched healthy individuals (HV, negative control), and 30 patients with acute infection (positive control)...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28522588/a-potential-mechanism-for-adc-induced-neutropenia-role-of-neutrophils-in-their-own-demise
#12
Hui Zhao, Sara Gulesserian, Maria Christina Malinao, Sathish Kumar-Ganesan, James Song, Mi Sook Chang, Melissa M Williams, Zhilan Zeng, Michael Mattie, Brian A Mendelsohn, David R Stover, Fernando Doñate
Neutropenia is a common adverse event in cancer patients treated with antibody-drug conjugates (ADCs) and we aimed to elucidate the potential mechanism of this toxicity. To investigate if ADCs affect neutrophil production from bone marrow, an in vitro assay was developed in which hematopoietic stem cells (HSCs) were differentiated to neutrophils. Several antibodies against targets absent in HSCs and neutrophils were conjugated to MMAE via a cleavable valine-citrulline linker (vcMMAE-ADCs) or MMAF via a non-cleavable maleimidocaproyl linker (mcMMAF-ADCs), and their cytotoxicity was tested in the neutrophil differentiation assay...
May 18, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28516880/abatacept-therapy-reduces-cd28-cxcr5-follicular-helper-like-t-cells-in-patients-with-rheumatoid-arthritis
#13
Shunsuke Fukuyo, Shingo Nakayamada, Shigeru Iwata, Satoshi Kubo, Kazuyoshi Saito, Yoshiya Tanaka
OBJECTIVES: The characteristics of T cells targeted by abatacept (ABT) in cases of rheumatoid arthritis (RA) are still unknown. The goal of the study was to determine the pathogenicity of T cells and the predictors of therapeutic effects of ABT. METHODS: We analysed the peripheral T cell phenotype of 34 RA patients via flow cytometry. The correlation of the phenotypes of CD4+ T cells with clinical disease activity and change in CD4+ T cell subsets at baseline and 24 weeks after ABT treatment were evaluated...
April 27, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28516872/glucocorticoid-sparing-effect-of-first-year-anti-tnf%C3%AE-treatment-in-rheumatoid-arthritis-corpus-cohort
#14
Carole Duquenne, Daniel Wendling, Jean Sibilia, Chantal Job-Deslandre, Loic Guillevin, Jacques Benichou, René Marc Flipo, Francis Guillemin, Alain Saraux
OBJECTIVES: Anti-TNFα agents are indicated in selected patients with rheumatoid arthritis (RA) who respond inadequately to methotrexate and particularly when glucocorticoids are mandatory. We evaluated whether a glucocorticoid-sparing effect occurred during the first year of anti-TNF-α therapy. METHODS: Between 2007 and 2009, the French multicentre, longitudinal, prospective, observational, population-based CORPUS cohort included biologic-naive patients with inflammatory joint disease...
May 15, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28516867/the-link-between-proteus-mirabilis-environmental-factors-and-autoantibodies-in-rheumatoid-arthritis
#15
REVIEW
Taha Rashid, Alan Ebringer, Clyde Wilson
Rheumatoid arthritis (RA) is a relatively common and potentially disabling immune-mediated inflammatory systemic disease, predominantly affecting women and characterised by multiple small joint arthritis. Extensive data supports the roles of genetic, environmental and microbial factors in the triggering and development of this disease. Proteus mirabilis is considered as the main microbial culprit in the causation of RA. The evidence for the role of these microbes in RA and their links with commonly associated autoantibodies such as rheumatoid factors and anti-citrullinated peptide antibodies have been elucidated together with their relations with some of the non-microbial environmental factors which have been implicated in the aetiopathogenesis of RA...
May 8, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28515163/assessment-of-nitric-oxide-production-in-mitochondrial-encephalomyopathy-lactic-acidosis-and-stroke-like-episodes-syndrome-with-the-use-of-a-stable-isotope-tracer-infusion-technique
#16
REVIEW
Ayman W El-Hattab, Farook Jahoor
Mitochondrial disorders result from dysfunctional mitochondria that are unable to generate sufficient energy to meet the needs of various organs. Mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes (MELAS) syndrome is one of the most frequent maternally inherited mitochondrial disorders. There is growing evidence that nitric oxide (NO) deficiency occurs in MELAS syndrome and results in impaired blood perfusion that contributes significantly to several complications in this disease. NO is synthesized from arginine by NO synthase, which catalyzes the conversion of arginine to NO and citrulline...
May 17, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28514978/jugular-infused-methionine-lysine-and-branched-chain-amino-acids-does-not-improve-milk-production-in-holstein-cows-experiencing-heat-stress
#17
K R Kassube, J D Kaufman, K G Pohler, J W McFadden, A G Ríus
Poor utilization of amino acids contributes to losses of milk protein yield in dairy cows exposed to heat stress (HS). Our objective was to test the effect of essential amino acids on milk production in lactating dairy cows exposed to short-term HS conditions. To achieve this objective, 12 multiparous, lactating Holstein cows were assigned to two environments (thermoneutral (THN) or HS) from days 1 to 14 in a split-plot type cross-over design. All cows received 0 g/day of essential amino acids from days 1 to 7 (negative control (NC)) followed by an intravenous infusion of l-methionine (12 g/day), l-lysine (21 g/day), l-leucine (35 g/day), l-isoleucine (15 g/day) and l-valine (15 g/day, methionine, lysine and branched-chain amino acids (ML+BCAA)) from days 8 to 14...
May 18, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28513179/consumption-of-watermelon-juice-enriched-in-l-citrulline-and-pomegranate-ellagitannins-enhanced-metabolism-during-physical-exercise
#18
Ascension Martinez-Sanchez, Fernando Alacid, Jacobo A Rubio-Arias, Bárbara Fernandez-Lobato, Domingo J Ramos-Campo, Encarna Aguayo
L-citrulline is a non-essential amino acid precursor of arginine and indirectly a precursor of nitric oxide (NO), which is a vasodilator and increases mitochondrial respiration. On the other hand, the antioxidant pomegranate ellagitannins are precursors of urolithin A, which has been associated with mitophagy and increased muscle function. To elucidate if a single dose of watermelon enrichment with these compounds have a positive effect after a high intensity exercise (8 sets of 8 repetitions of half squat exercise), a double-blind randomized crossover in vivo study was performed in healthy male subjects (n=19)...
May 17, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28511426/effect-of-anti-cyclic-citrullinated-peptide-and-hla-drb1-subtypes-on-clinical-disease-activity-index-in-rheumatoid-arthritis-patients
#19
Akbar Soleimani, Zahra Mobedi, Maryam Al-E-Rasul, Abolghasem Sharifi, Abdolrahim Kazemi Vardanjani
INTRODUCTION: Rheumatoid arthritis (RA) is a crippling disease with a global prevalence of approximately 0.5%-1% in adults. Genetic, environmental and immunologic factors contribute importantly to pathogenesis of RA. American College of Rheumatology (ACR) assists in early diagnosis of the disease. AIM: The aim of this study was to investigate the effects of HLA-DRB1 gene and anti-Cyclic Citrullinated Peptide (CCP) antibody on Clinical Disease Activity Index (CDAI) and to determine the frequency of HLA-DRB1 alleles in the patients with RA...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28510260/markers-of-enteral-adaptation-in-pediatric-cases-with-short-bowel-syndrome
#20
Masahiro Chiba, Yutaka Sanada, Akira Toki
BACKGROUND: This study aimed to ascertain if prospective determinations of specific gut hormones and growth factors could predict bowel adaptation in children with short bowel syndrome (SBS). METHODS: We studied parenteral nutrition (PN) independency as the short-term result and discontinuation of enteral nutrition (EN) as the long-term result from a retrospective chart review of 7 patients with SBS, who were managed in the absence of growth retardation. The correlation between increased numbers of enteral feedings or enteral nutrients and fasting levels of serum gastrin, glucagon-like peptide 2 (GLP-2), citrulline, and diamine oxidase (DAO) activity was analyzed...
May 16, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
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