keyword
MENU ▼
Read by QxMD icon Read
search

Serum citrulline

keyword
https://www.readbyqxmd.com/read/27906052/antibody-responses-to-de-novo-identified-citrullinated-fibrinogen-peptides-in-rheumatoid-arthritis-and-visualization-of-the-corresponding-b-cells
#1
Vijay Joshua, Loes Schobers, Philip J Titcombe, Lena Israelsson, Johan Rönnelid, Monika Hansson, Anca I Catrina, Ger J M Pruijn, Vivianne Malmström
BACKGROUND: Antibodies against citrullinated proteins (ACPA) are common in patients with rheumatoid arthritis (RA). ACPA can appear before disease onset and target many self-antigens. Citrullinated fibrin/fibrinogen represents a classical ACPA target antigen, and mass spectrometry of RA synovial fluid reveals elevated citrullinated (cit) fibrinogen (Fib) peptides compared to non-RA controls. We investigated the extent to which these less-studied peptides represent autoantibody targets and sought to visualize the corresponding cit-Fib-reactive B cells in RA patients...
December 1, 2016: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/27890855/linker-stability-influences-the-anti-tumor-activity-of-acetazolamide-drug-conjugates-for-the-therapy-of-renal-cell-carcinoma
#2
Samuele Cazzamalli, Alberto Dal Corso, Dario Neri
Small molecule-drug conjugates (SMDCs) are increasingly being considered as an alternative to antibody-drug conjugates (ADCs) for the selective delivery of anticancer agents to the tumor site, sparing normal tissues. Carbonic anhydrase IX (CAIX) is a membrane-bound enzyme, which is over-expressed in the majority of renal cell carcinomas and which can be efficiently targeted in vivo, using charged derivatives of acetazolamide, a small heteroaromatic sulfonamide. Here, we show that SMDC products, obtained by the coupling of acetazolamide with monomethyl auristatin E (MMAE) using dipeptide linkers, display a potent anti-tumoral activity in mice bearing xenografted SKRC-52 renal cell carcinomas...
November 24, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/27887639/prevalence-sensitivity-and-specificity-of-antibodies-against-carbamylated-proteins-in-a-monocentric-cohort-of-patients-with-rheumatoid-arthritis-and-other-autoimmune-rheumatic-diseases
#3
Arbi Pecani, Cristiano Alessandri, Francesca Romana Spinelli, Roberta Priori, Valeria Riccieri, Manuela Di Franco, Fulvia Ceccarelli, Tania Colasanti, Monica Pendolino, Riccardo Mancini, Simona Truglia, Cristiana Barbati, Marta Vomero, Danilo Sabatinelli, Francesca Morello, Guido Valesini, Fabrizio Conti
BACKGROUND: Antibodies against carbamylated proteins (anti-CarP) have been recently identified in the sera of patients with rheumatoid arthritis (RA). The objective of the study was to evaluate the prevalence, sensitivity and specificity of anti-CarP compared to anti-citrullinated peptide antibodies (ACPA) and rheumatoid factor (RF), replicating the existing data in a large cohort of Italian patients with RA and extending the evaluation to other autoimmune rheumatic diseases (AIRDs). METHODS: Serum samples (n = 607) from 309 patients with RA, 200 disease controls and 98 normal healthy subjects (NHS) were evaluated...
November 25, 2016: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/27863183/evidence-for-immune-relevance-of-prevotella-copri-a-gut-microbe-in-patients-with-rheumatoid-arthritis
#4
Annalisa Pianta, Sheila Arvikar, Klemen Strle, Elise E Drouin, Qi Wang, Catherine E Costello, Allen C Steere
OBJECTIVE: Prevotella copri, an intestinal microbe, may over-expand in stool samples of patients with new-onset rheumatoid arthritis (NORA), but it is not yet clear whether the organism has immune relevance in RA pathogenesis. METHODS: HLA-DR-presented peptides (T cell epitopes) from P. copri were sought directly from patients' synovial tissue or peripheral blood mononuclear cells (PBMC) using tandem mass spectrometry, followed by testing the antigenicity of peptides or their source proteins using samples from RA patients or comparison groups...
November 18, 2016: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/27855721/the-lung-microbiota-in-early-rheumatoid-arthritis-and-autoimmunity
#5
Jose U Scher, Vijay Joshua, Alejandro Artacho, Shahla Abdollahi-Roodsaz, Johan Öckinger, Susanna Kullberg, Magnus Sköld, Anders Eklund, Johan Grunewald, Jose C Clemente, Carles Ubeda, Leopoldo N Segal, Anca I Catrina
BACKGROUND: Airway abnormalities and lung tissue citrullination are found in both rheumatoid arthritis (RA) patients and individuals at-risk for disease development. This suggests the possibility that the lung could be a site of autoimmunity generation in RA, perhaps in response to microbiota changes. We therefore sought to test whether the RA lung microbiome contains distinct taxonomic features associated with local and/or systemic autoimmunity. METHODS: 16S rRNA gene high-throughput sequencing was utilized to compare the bacterial community composition of bronchoalveolar lavage fluid (BAL) in patients with early, disease-modifying anti-rheumatic drugs (DMARD)-naïve RA, patients with lung sarcoidosis, and healthy control subjects...
November 17, 2016: Microbiome
https://www.readbyqxmd.com/read/27833161/12-months-metabolic-changes-among-gender-dysphoric-individuals-under-cross-sex-hormone-treatment-a-targeted-metabolomics-study
#6
Matthias K Auer, Alexander Cecil, Yasmin Roepke, Charlotte Bultynck, Charlotte Pas, Johannes Fuss, Cornelia Prehn, Rui Wang-Sattler, Jerzy Adamski, Günter K Stalla, Guy T'Sjoen
Metabolomic analyses in epidemiological studies have demonstrated a strong sexual dimorphism for most metabolites. Cross-sex hormone treatment (CSH) in transgender individuals enables the study of metabolites in a cross-gender setting. Targeted metabolomic profiling of serum of fasting transmen and transwomen at baseline and following 12 months of CSH (N = 20/group) was performed. Changes in 186 serum metabolites and metabolite ratios were determined by targeted metabolomics analysis based on ESI-LC-MS/MS...
November 11, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27830380/recovery-of-pan-genotypic-and-genotype-specific-amino-acid-alterations-in-chronic-hepatitis-c-after-viral-clearance-transition-at-the-crossroad-of-metabolism-and-immunity
#7
Ming-Ling Chang, Mei-Ling Cheng, Su-Wei Chang, Hsiang-Yu Tang, Cheng-Tang Chiu, Chau-Ting Yeh, Ming-Shi Shiao
Recovery of amino acid (AA) metabolism and the associated clinical implications in chronic hepatitis C (CHC) patients with sustained virological response (SVR) following anti-hepatitis C virus (HCV) therapy remains elusive. A prospective cohort study was conducted on 222 CHC patients with SVR. Eighty-two age-matched male genotype 1 (G1) and G2 patients underwent paired serum metabolomics analyses with liquid chromatography-tandem mass spectrometry to examine AAs before and 24 weeks after anti-HCV therapy. Before anti-HCV therapy, G1 patients had a higher HCV RNA level than G2 patients...
November 10, 2016: Amino Acids
https://www.readbyqxmd.com/read/27800636/diagnostic-value-of-autoantibodies-combined-detection-for-rheumatoid-arthritis
#8
Pingping Sun, Wanhai Wang, Ling Chen, Nan Li, Xianchun Meng, Jing Bian, Jingjing Yang, Xu'na Wang, Weitao Zhu, Liang Ming
BACKGROUND: Rheumatoid arthritis (RA) is a chronic, inflammatory and autoimmune disease, there are many autoantibodies produced during disease progression in the patients' serum, and this work is to select a best detection scheme for RA diagnosis. METHODS: Autoantibody levels including rheumatoid factor (RF), anti-cyclic citrullinated peptide (CCP), mutated citrullinated vimentin (MCV), anti-keratin antibodies(AKA), anti-perinuclear factor (APF), and Ig heavy chain binding protein (BIP), were measured, and the sensitivity, specificity, predictive values, accuracy, and Youden's index of different combining forms were all calculated in RA patients, disease, and healthy control group...
November 1, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27798350/the-effect-of-endurance-exercise-on-intestinal-integrity-in-well-trained-healthy-men
#9
Lonneke M JanssenDuijghuijsen, Marco Mensink, Kaatje Lenaerts, Ewa Fiedorowicz, Dorien A M van Dartel, Jurriaan J Mes, Yvette C Luiking, Jaap Keijer, Harry J Wichers, Renger F Witkamp, Klaske van Norren
Exercise is one of the external factors associated with impairment of intestinal integrity, possibly leading to increased permeability and altered absorption. Here, we aimed to examine to what extent endurance exercise in the glycogen-depleted state can affect intestinal permeability toward small molecules and protein-derived peptides in relation to markers of intestinal function. Eleven well-trained male volunteers (27 ± 4 years) ingested 40 g of casein protein and a lactulose/rhamnose (L/R) solution after an overnight fast in resting conditions (control) and after completing a dual - glycogen depletion and endurance - exercise protocol (first protocol execution)...
October 2016: Physiological Reports
https://www.readbyqxmd.com/read/27797973/integrative-systemic-and-local-metabolomics-with-impact-on-survival-in-high-grade-serous-ovarian-cancer
#10
Anna Bachmayr-Heyda, Stefanie Aust, Katharina Auer, Samuel M Meier, Klaus G Schmetterer, Sabine Dekan, Christopher Gerner, Dietmar Pils
PURPOSE: Cancer metabolism is characterized by alterations including aerobic glycolysis, oxidative phosphorylation, and need of fuels and building blocks. EXPERIMENTAL DESIGN: Targeted metabolomics of pre-operative and follow-up sera, ascites, and tumor tissues, RNA sequencing of isolated tumor cells, local and systemic chemokine and local immune cell infiltration data from up to 65 high grade serous ovarian cancer patients and 62 healthy controls were correlated to overall survival and integrated in a Systems Medicine manner...
October 19, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27792195/effect-of-the-aged-garlic-extract-on-cardiovascular-function-in-metabolic-syndrome-rats
#11
Israel Pérez-Torres, Juan Carlos Torres-Narváez, José Pedraza-Chaverri, María Esther Rubio-Ruiz, Eulises Díaz-Díaz, Leonardo Del Valle-Mondragón, Raúl Martínez-Memije, Elvira Varela López, Verónica Guarner-Lans
The antioxidant properties of aged garlic extract (AGE) on cardiovascular functioning (CF) in metabolic syndrome (MS) remains poorly studied. Here we study the AGE effects on CF in a rat model of MS. Control rats plus saline solution (C + SS), MS rats (30% sucrose in drinking water from weaning) plus saline solution (MS + SS), control rats receiving AGE (C + AGE 125 mg/Kg/12 h) and MS rats with AGE (MS + AGE) were studied. MS + SS had increased triglycerides, systolic blood pressure, insulin, leptin, HOMA index, and advanced glycation end products...
October 26, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27790341/anti-cyclic-citrullinated-peptide-antibodies-in-children-with-juvenile-idiopathic-arthritis
#12
Mohamed Hamooda, Hala Fouad, Nermeen Galal, Nadia Sewelam, Dina Megahed
AIM: The purpose of present study was to access the prevalence of anti-cyclic citrullinated peptide (anti-CCP) antibodies in children with Juvenile Idiopathic Arthritis (JIA), and to investigate the clinical significance and diagnostic value of the anti-CCP antibodies in correlation with age, sex & activity. METHODS: This case-control study was performed on 50 patients with JIA in addition to 40 sex and age-matched children as a control group. The participants were recruited from rheumatology Outpatient Clinic of Cairo University Specialized Pediatric Hospital...
September 2016: Electronic Physician
https://www.readbyqxmd.com/read/27788684/protein-oxidation-nitration-and-glycation-biomarkers-for-early-stage-diagnosis-of-osteoarthritis-of-the-knee-and-typing-and-progression-of-arthritic-disease
#13
Usman Ahmed, Attia Anwar, Richard S Savage, Paul J Thornalley, Naila Rabbani
BACKGROUND: There is currently no blood-based test for detection of early-stage osteoarthritis (OA) and the anti-cyclic citrullinated peptide (CCP) antibody test for rheumatoid arthritis (RA) has relatively low sensitivity for early-stage disease. Morbidity in arthritis could be markedly decreased if early-stage arthritis could be routinely detected and classified by clinical chemistry test. We hypothesised that damage to proteins of the joint by oxidation, nitration and glycation, and with signatures released in plasma as oxidized, nitrated and glycated amino acids may facilitate early-stage diagnosis and typing of arthritis...
October 27, 2016: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/27788229/characterization-of-autoantigens-targeted-by-anti-citrullinated-protein-antibodies-in-vivo-prominent-role-for-epitopes-derived-from-histone-4-proteins
#14
Xiaobo Meng, Peyman Ezzati, Irene Smolik, Charles N Bernstein, Carol Ann Hitchon, Hani S El-Gabalawy
Anti-citrullinated protein antibodies (ACPA) have become an integral part of the clinical definition of rheumatoid arthritis, and are hypothesized to be important in the immunopathogenesis of this autoimmune disease. Several citrullinated proteins have been demonstrated to serve as candidate autoantigens for the ACPA, based on in vitro immune reactions between citrullinated peptides/proteins and RA sera. Yet it remains unclear whether the autoantigens identified in vitro are indeed directly and specifically targeted by the ACPA in vivo...
2016: PloS One
https://www.readbyqxmd.com/read/27770831/association-of-anti-peptidyl-arginine-deiminase-antibodies-with-radiographic-severity-of-rheumatoid-arthritis-in-african-americans
#15
Iris Navarro-Millán, Erika Darrah, Andrew O Westfall, Ted R Mikuls, Richard J Reynolds, Maria I Danila, Jeffrey R Curtis, Antony Rosen, S Louis Bridges
BACKGROUND: Evidence suggests that the presence of peptidyl arginine deiminase type 4 (PAD4) antibodies is associated with radiographic-severity rheumatoid arthritis (RA) among Caucasian patients. The presence of anti-PAD4 antibodies that were cross-reactivity against PAD3 was associated with more aggressive erosive disease (compared with the presence of anti-PAD4 antibodies without anti-PAD3 crossreactivity) in Caucasian RA patients. The objectives of this study were to determine the prevalence of serum anti-PAD4 and anti-PAD4/PAD3 cross-reactive autoantibodies in African Americans with RA and whether these antibodies associate with radiographic severity and radiographic progression...
October 22, 2016: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/27733582/synovial-il-21-tnf-producing-cd4-t-cells-induce-joint-destruction-in-rheumatoid-arthritis-by-inducing-matrix-metalloproteinase-production-by-fibroblast-like-synoviocytes
#16
Maria C Lebre, Pedro L Vieira, Man Wai Tang, Saïda Aarrass, Boy Helder, Thomas Newsom-Davis, Paul P Tak, Gavin R Screaton
Bone and cartilage destruction is one of the key manifestations of rheumatoid arthritis (RA). Although the role of T helper (Th)17 cells in these processes is clear, the role of IL-21-producing cells T cells has been neglected. We sought to investigate the role of IL-21 in RA by focusing on the functional characteristics of the main producers of this cytokine, synovial CD4(+)IL-21(+) T cells. We show that the frequency of both synovial fluid (SF) CD4(+)IL-21(+) or CD4(+)IL-21(+)TNF(+) T cells in patients with RA was significantly higher compared with patients with psoriatic arthritis (PsA)...
October 12, 2016: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/27730746/distinct-metabolic-profile-of-inhaled-budesonide-and-salbutamol-in-asthmatic-children-during-acute-exacerbation
#17
Yang Quan-Jun, Zhang Jian-Ping, Zhang Jian-Hua, Han Yong-Long, Xin Bo, Zhang Jing-Xian, Dai Bona, Zhang Yuan, Guo Cheng
Inhaled budesonide and salbutamol represent the most important and frequently used drugs in asthmatic children during acute exacerbation. However, there is still no consensus about their resulting metabolic derangements; thus, the present study was conducted to determine the distinct metabolic profiles of these two drugs. A total of 69 children with asthma during acute exacerbation were included, and their serum and urine were investigated using high-resolution nuclear magnetic resonance (NMR). A metabolomics analysis was performed using a principal component analysis and orthogonal signal correction-partial least squares using SIMCA-P...
October 12, 2016: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/27722902/vitamin-k-homologs-as-potential-biomarkers-for-disease-activity-in-patients-with-rheumatoid-arthritis
#18
Hani M Khojah, Sameh Ahmed, Mahran S Abdel-Rahman, Khaled M Alkhalil, Al-Badr Hamza
The aim of this study was to evaluate the possible role of vitamin K homologs as potential biomarkers for disease activity in patients with rheumatoid arthritis (RA). In this study, 42 patients with RA and 40 healthy controls were enrolled. Serum levels of vitamin K homologs were measured using a high-performance liquid chromatography-fluorescence method. Different biochemical and clinical markers for disease activity were measured and correlated with serum levels of vitamin K homologs. There were no significant differences between RA patients and healthy subjects in demographic data...
October 8, 2016: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/27721779/anti-cyclic-citrullinated-peptide-antibody-positive-meningoencephalitis-in-the-preclinical-period-of-rheumatoid-arthritis
#19
Tomoya Shibahara, Tomonaga Matsushita, Ryu Matsuo, Yoshihisa Fukushima, Kenji Fukuda, Hiroshi Sugimori, Masahiro Kamouchi, Takanari Kitazono, Tetsuro Ago
Rheumatoid meningoencephalitis (RM) is a rare complication of rheumatoid arthritis (RA). This report describes a 63-year-old man with complaints of high-grade fever, headache, and vomiting for several days before admission. Both his serum and cerebrospinal fluid were positive for anti-cyclic citrullinated peptide (CCP) antibody and rheumatoid factor, and contrast-enhanced fluid-attenuated inversion recovery magnetic resonance imaging (MRI) showed abnormal gadolinium enhancement of the meninges and high-intensity lesions in the subarachnoid spaces...
May 2016: Case Reports in Neurology
https://www.readbyqxmd.com/read/27716111/case-report-aqueous-and-vitreous-amino-acid-concentrations-in-a-patient-with-maple-syrup-urine-disease-operated-on-rhegmatogenous-retinal-detachment
#20
Menelaos G Kanakis, Helen Michelakakis, Petros Petrou, Chrysanthi Koutsandrea, Ilias Georgalas
BACKGROUND: Maple syrup urine disease (MSUD) is a rare metabolic disorder, affecting the metabolism of branched chain amino-acids (Valine, Leukine, Isoleukine). We present a rare case of rhegmatogenous retinal detachment (RRD) in a MSUD patient. CASE PRESENTATION: We performed amino acid analysis of aqueous humour, vitreous and serum samples obtained during surgery from a 24 year old female MSUD patient successfully operated on RRD. Serum values for a-amino-butyric acid, valine, isoleucine, leucine, tyrosine, phenylalanine, ornithine and histidine were low, while values for citrulline, methionine and lysine were borderline low, all attributed to the patient's special diet...
October 3, 2016: BMC Ophthalmology
keyword
keyword
46097
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"