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https://www.readbyqxmd.com/read/28398552/carbamylated-albumin-is-one-of-the-target-antigens-of-anti-carbamylated-protein-antibodies
#1
Shuichiro Nakabo, Motomu Hashimoto, Shinji Ito, Moritoshi Furu, Hiromu Ito, Takao Fujii, Hajime Yoshifuji, Yoshitaka Imura, Ran Nakashima, Kosaku Murakami, Nobuo Kuramoto, Masao Tanaka, Junko Satoh, Akihito Ishigami, Satoshi Morita, Tsuneyo Mimori, Koichiro Ohmura
Objectives.: Anti-carbamylated protein (anti-CarP) antibodies are detected in RA patients. Fetal calf serum is used as an antigen source in anti-CarP ELISA, and the precise target antigens have not been found. We aimed to identify the target antigens of anti-CarP antibodies. Methods.: Western blotting of anti-CarP antibodies was conducted. Anti-carbamylated human albumin (CarALB) antibody was detected by in-house ELISA for 493 RA patients and 144 healthy controls (HCs)...
April 7, 2017: Rheumatology
https://www.readbyqxmd.com/read/28397166/characterization-of-igg-glycosylation-in-rheumatoid-arthritis-patients-by-maldi-tof-ms-n-and-capillary-electrophoresis
#2
Chuncui Huang, Yaming Liu, Hongmei Wu, Dehui Sun, Yan Li
An analytical method based on the combination of multistage mass spectrometry (MS(n)) and capillary electrophoresis (CE) was developed for the analysis of immunoglobulin G (IgG) glycosylation in rheumatoid arthritis (RA) patients. It has been recently suggested that IgG glycosylation defect may be involved in RA immunopathogenesis. Complete characterization of glycans, including both qualitative and quantitative analysis, requires a combination of different techniques, and accurate, robust, sensitive, and high-throughput methodologies are important for analysis of clinical samples...
April 10, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28389054/the-use-of-natalizumab-in-pediatric-patients-with-active-relapsing-multiple-sclerosis-a-prospective-study
#3
Raed Alroughani, Samar Farouk Ahmed, Raed Behbehani, Jasem Al-Hashel
BACKGROUND: Pediatric multiple sclerosis (MS) has been increasingly recognized. In the absence of approved disease-modifying therapies (DMTs) for pediatric patients, clinicians resort to data extrapolated from clinical trials conducted in adults with MS. The objective of this article was to study the effectiveness and safety of natalizumab in with pediatric MS. METHODS: Patients with pediatric MS (aged < 18 years) who had been treated with natalizumab were followed up prospectively as part of the national MS registry...
February 2, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28386460/reversal-of-abnormal-cardiac-parameters-following-mitral-valve-replacement-for-severe-mitral-stenosis-in-relation-to-pulmonary-artery-pressure-a-retrospective-study-of-noninvasive-parameters-early-and-late-pattern
#4
REVIEW
Usha T Parvathy, Rajesh Rajan, Alexander Georgevich Faybushevich
BACKGROUND AND OBJECTIVES: Although the regression of pulmonary hypertension (PH) in mitral stenosis (MS) has been studied over varying periods postintervention, corresponding studies on the cardiac chamber alterations after surgery are very limited. We sought to determine the degree of reversal of these and the clinical status in connection with that of pulmonary artery pressures (PAPs) in the early and late postoperative periods. METHODS: The preoperative, early, and 1-year postoperative data - functional class (FC), cardiothoracic ratio (CTR) in chest X-ray (CXR), and echocardiographically left atrium (LA), right atrium (RA), right ventricle (RV), left ventricle (LV), and pulmonary artery (PA) dimensions, PAP, tricuspid regurgitation (TR) - of 50 patients who had mitral valve replacement (MVR) for MS with PH were retrospectively analyzed for correlations with PAP (Pearson's), and their change (t-test), in relation to that in PAP...
June 1, 2016: Interventional Medicine & Applied Science
https://www.readbyqxmd.com/read/28382837/long-term-disability-trajectories-in-primary-progressive-ms-patients-a-latent-class-growth-analysis
#5
Alessio Signori, Guillermo Izquierdo, Alessandra Lugaresi, Raymond Hupperts, Francois Grand'Maison, Patrizia Sola, Dana Horakova, Eva Havrdova, Alexandre Prat, Marc Girard, Pierre Duquette, Cavit Boz, Pierre Grammond, Murat Terzi, Bhim Singhal, Raed Alroughani, Thor Petersen, Cristina Ramo, Celia Oreja-Guevara, Daniele Spitaleri, Vahid Shaygannejad, Helmut Butzkueven, Tomas Kalincik, Vilija Jokubaitis, Mark Slee, Ricardo Fernandez Bolaños, Jose Luis Sanchez-Menoyo, Eugenio Pucci, Franco Granella, Jeannette Lechner-Scott, Gerardo Iuliano, Stella Hughes, Roberto Bergamaschi, Bruce Taylor, Freek Verheul, Maria Edite Rio, Maria Pia Amato, Seyed Aidin Sajedi, Nastaran Majdinasab, Vincent Van Pesch, Maria Pia Sormani, Maria Trojano
BACKGROUND: Several natural history studies on primary progressive multiple sclerosis (PPMS) patients detected a consistent heterogeneity in the rate of disability accumulation. OBJECTIVES: To identify subgroups of PPMS patients with similar longitudinal trajectories of Expanded Disability Status Scale (EDSS) over time. METHODS: All PPMS patients collected within the MSBase registry, who had their first EDSS assessment within 5 years from onset, were included in the analysis...
April 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28359984/a-selective-hplc-ms-ms-method-for-quantification-of-snd-117-in-rat-plasma-and-its-application-to-a-pharmacokinetic-study
#6
Bei-Hua Bao, An Kang, Yang Zhao, Qi Shen, Jun-Song Li, Liu-Qing Di, Jian-Xin Li
Rheumatoid arthritis (RA), a chronic systemic inflammatory disorder affects many adults. Sinomenine, a natural product, has been clinically available for the treatment of RA in China. SND-117, a sinomenine derivative with much more potent activity, might serve as a candidate for anti-arthritis. The aim of the present study was to develop a sensitive and rapid high performance liquid chromatography tandem mass spectrometry (HPLC-MS/MS) method for quantification of SND-117 in rat plasma and to understand its absolute bioavailability...
March 12, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28340775/quantification-of-226-ra-at-environmental-relevant-levels-in-natural-waters-by-icp-ms-optimization-validation-and-limitations-of-an-extraction-and-preconcentration-approach
#7
François Lagacé, Delphine Foucher, Céline Surette, Olivier Clarisse
Radium (Ra) at environmental relevant levels in natural waters was determined by ICP-MS after an off-line pre-concentration procedure. The latter consisted of Ra selective elution from potential interfering elements (i.e. other alkaline earth cations: Ba(2+), Sr(2+), Ca(2+), Mg(2+)) on a series of two different ion exchange resins (AG50W-X8 and Sr-resin). The overall analytical method was optimized according to the instrumental performance, the volume of water sample loaded on resins, and the sample salinity...
May 15, 2017: Talanta
https://www.readbyqxmd.com/read/28335450/assessment-of-radioactive-materials-and-heavy-metals-in-the-surface-soil-around-the-bayanwula-prospective-uranium-mining-area-in-china
#8
Haribala Bai, Bitao Hu, Chengguo Wang, Shanhu Bao, Gerilemandahu Sai, Xiao Xu, Shuai Zhang, Yuhong Li
The present work is the first systematic and large scale study on radioactive materials and heavy metals in surface soil around the Bayanwula prospective uranium mining area in China. In this work, both natural and anthropogenic radionuclides and heavy metals in 48 surface soil samples were analyzed using High Purity Germanium (HPGe) γ spectrometry and inductively coupled plasma-mass spectrometry (ICP-MS). The obtained mean activity concentrations of (238)U, (226)Ra, (232)Th, (40)K, and (137)Cs were 25.81 ± 9...
March 14, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28316374/the-role-of-il-17-and-related-cytokines-in-inflammatory-autoimmune-diseases
#9
REVIEW
Taku Kuwabara, Fumio Ishikawa, Motonari Kondo, Terutaka Kakiuchi
Interleukin-17 (IL-17) induces the production of granulocyte colony-stimulating factor (G-CSF) and chemokines such as CXCL1 and CXCL2 and is a cytokine that acts as an inflammation mediator. During infection, IL-17 is needed to eliminate extracellular bacteria and fungi, by inducing antimicrobial peptides such as defensin. This cytokine also plays an important role in chronic inflammation that occurs during the pathogenesis of autoimmune diseases and allergies such as human rheumatoid arthritis (RA) for which a mouse model of collagen-induced arthritis (CIA) is available...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28296337/anti-carbamylated-protein-antibodies-in-rheumatoid-arthritis-patients-are-reactive-to-specific-epitopes-of-the-human-fibrinogen-%C3%AE-chain
#10
Jonathan D Jones, B JoNell Hamilton, William F C Rigby
OBJECTIVE: Anti-carbamylated protein antibodies (ACarPA) are associated with rheumatoid arthritis (RA) risk and severity and are primarily directed against fibrinogen. The lack of understanding of ACarPA reactivity has limited analysis of their immunopathogenic associations in RA. To address this shortcoming, we mapped ACarPA epitope reactivity in RA patient sera. METHODS: Immunoblotting identified a patient serum with specific reactivity to carbamylated human fibrinogen β-chain...
March 15, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28284345/assessment-of-plasma-biomarkers-for-their-association-with-multiple-sclerosis-progression
#11
Sindhu Jacob, Asmaa Al-Kandari, Raed Alroughani, Rabeah Al-Temaimi
In a cross-sectional study involving 160 Multiple Sclerosis (MS) patients and 70 healthy controls we set out to determine the association of five blood biomarkers with MS risk and progression scores. High levels of Semaphorin3A (SEMA3A) in females, and low levels of prolactin and estradiol in males associated with MS risk. High MS disability correlated with higher SEMA3A levels in females. Our findings suggest the clinical applicability of SEMA3A, and prolactin as biomarkers for MS progression. However, these biomarkers had sex-specific associations with MS, and any therapeutic approaches utilizing them should take that into consideration...
April 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28263097/transcriptional-and-epigenetic-regulation-of-follicular-t-helper-cells-and-their-role-in-autoimmunity
#12
Hong Qiu, Haijing Wu, Vera Chan, Chak-Sing Lau, Qianjin Lu
T-follicular helper (Tfh) cells are a specialized subset of T cells that provide help to B cells and promote the formation of germinal centers (GCs). Tfh cells transmit important signals to B cells that drive class switch recombination, somatic hyper-mutation, the generation of high-affinity antibodies, immunological memory and their differentiation into plasma cells or memory B cells in the GCs. Tfh-cell differentiation is regulated by the coordinated functions of distinct cytokines, including interleukin (IL)-6, IL-21, IL-12, IL-23, IL-2, IL-7 and transforming growth factor-β (TGF-β), as well as transcription factors, including B-cell lymphoma 6 protein (Bcl-6), Signal transducers and activators of transcription (STAT)1, STAT3, STAT4, B-cell activating transcription factor (Batf), interferon regulatory factor 4 (IRF4), v-maf avian musculoaponeurotic fibrosarcoma oncogene homolog (C-Maf), T-cell-specific transcription factor 1 (TCF-1) and Achaete-scute homolog 2 (Acl2), which have been shown to form a complex transcriptional network...
March 2017: Autoimmunity
https://www.readbyqxmd.com/read/28246126/effect-of-disease-related-changes-in-plasma-albumin-on-the-pharmacokinetics-of-naproxen-in-male-and-female-arthritic-rats
#13
Xiaonan Li, Debra C DuBois, Richard R Almon, William J Jusko
Naproxen (NPX) is used in the treatment of rheumatoid arthritis (RA) for alleviation of pain and inflammation. In view of the extensive albumin binding of NPX, this study investigates whether chronic inflammation and sex will influence the physiological albumin concentrations, plasma protein binding, and pharmacokinetics (PK) of NPX. The PK of NPX was evaluated in a rat model of RA (collagen-induced arthritis (CIA) in Lewis rats) and in healthy controls. These PK studies included: 1) NPX in female and male CIA rats that received 10, 25 or 50 mg/kg NPX intraperitoneally (IP), and 2) NPX in healthy female and male rats after IP dosing of NPX at 50 mg/kg...
February 28, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28241758/clinical-trials-from-the-patient-perspective-survey-in-an-online-patient-community
#14
Pronabesh DasMahapatra, Priya Raja, Jeremy Gilbert, Paul Wicks
BACKGROUND: Developing new medicines relies on the successful conduct of clinical trials. As trial protocols become more arduous, it becomes harder to recruit and retain patient volunteers, although recent efforts such as OMERACT and I-SPY2 show that partnering with patients can be beneficial. We sought to describe drivers and barriers to trial participation, as well as condition-specific trial preferences. METHODS: An online survey was fielded via the patient-powered research network PatientsLikeMe to 1,621 members living with nine selected chronic health conditions...
February 27, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28236556/development-of-a-method-for-rapid-analysis-of-ra-226-in-groundwater-and-discharge-water-samples-by-icp-qqq-ms
#15
E M van Es, B C Russell, P Ivanov, D Read
A novel and rapid method has been developed for pre-concentration and measurement of (226)Ra in groundwater and discharge water samples using the latest generation triple quadrupole inductively coupled plasma mass spectrometry (ICP-QQQ-MS). Cation exchange and extraction chromatography are capable of pre-concentration factors of ~200 based on 1L samples. The sensitivity and interference removal capability of ICP-QQQ-MS was assessed from spiked groundwaters, with the introduction of He collision gas required to minimise instrument background in high-matrix samples...
February 20, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28222725/how-do-medical-students-differ-in-their-interpersonal-needs
#16
Yera Hur, A Ra Cho, Sun Huh, Sun Kim
BACKGROUND: Knowing one's interpersonal relationship preferences can be tremendously helpful for medical students' lives. The purpose of this study was to examine the interpersonal needs in medical students. METHODS: Between 2010 and 2015, a total of 877 students from four Korean medical schools took the Korean version of the Fundamental Interpersonal Relations Orientation - Behaviour (FIRO-B) scale. The FIRO-B results were analyzed by descriptive statistics, frequency, independent t-test, and one-way ANOVA...
February 21, 2017: BMC Medical Education
https://www.readbyqxmd.com/read/28217229/evaluation-of-the-characteristics-of-rotational-activation-at-high-dominant-frequency-and-complex-fractionated-atrial-electrogram-sites-during-atrial-fibrillation
#17
Koji Kumagai, Kentaro Minami, Daisuke Kutsuzawa, Shigeru Oshima
BACKGROUND: High-dominant frequency (DF) and continuous complex fractionated atrial electrogram (CFAE) sites as surrogates for localized sources maintaining atrial fibrillation (AF) are potential AF ablation targets. This study aimed to evaluate the characteristics of a rotational activation at high-DF and continuous CFAE sites in AF patients. METHODS: Thirty-two consecutive AF patients (5 paroxysmal and 27 non-paroxysmal) underwent ablation using the NavX system...
February 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28207326/micro-rna-146a-but-not-irak1-is-associated-with-rheumatoid-arthritis-in-the-tunisian-population
#18
Hana Ben Hassine, Asma Boumiza, Rim Sghiri, Khadija Baccouche, Imen Boussaid, Ahlem Atig, Zahid Shakoor, Elyes Bouajina, Ramzi Zemni
BACKGROUND: Rheumatoid arthritis (RA) is characterized by the production of an array of proinflammatory cytokines through the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) signaling pathway. Interleukin-1 receptor (IL-1R) and Toll-like receptors contain a common cytoplasmic motif the Toll/IL-1R (TIR) homology domain. This motif is required for NF-κB activation. IL-1R-associated kinase 1 (IRAK1) is a key adapter molecule recruited during the signaling cascade of the TIR...
February 2017: Genetic Testing and Molecular Biomarkers
https://www.readbyqxmd.com/read/28192539/optical-coherence-tomography-segmentation-analysis-in-relapsing-remitting-versus-progressive-multiple-sclerosis
#19
Raed Behbehani, Abdullah Abu Al-Hassan, Ali Al-Salahat, Devarajan Sriraman, J D Oakley, Raed Alroughani
INTRODUCTION: Optical coherence tomography (OCT) with retinal segmentation analysis is a valuable tool in assessing axonal loss and neuro-degeneration in multiple sclerosis (MS) by in-vivo imaging, delineation and quantification of retinal layers. There is evidence of deep retinal involvement in MS beyond the inner retinal layers. The ultra-structural retinal changes in MS in different MS phenotypes can reflect differences in the pathophysiologic mechanisms. There is limited data on the pattern of deeper retinal layer involvement in progressive MS (PMS) versus relapsing remitting MS (RRMS)...
2017: PloS One
https://www.readbyqxmd.com/read/28146302/simultaneous-determination-of-eight-bioactive-components-of-qishen-yiqi-dripping-pills-in-rat-plasma-using-uflc-ms-ms-and-its-application-to-a-pharmacokinetic-study
#20
Yaping Shao, Wen Zhang, Ling Tong, Jingyi Huang, Dongxiang Li, Wei Nie, Yan Zhu, Yunfei Li, Tao Lu
In this study, a rapid and reliable ultra-fast liquid chromatography-tandem mass spectrometry (UFLC-MS/MS) method was developed and validated for the simultaneous determination of eight active ingredients, including astragaloside IV (AIV), ononin (ONO), tanshinol (TSL), protocatechualdehyde (PCA), protocatechuic acid (PA), salvianolic acid D (SAD), rosmarinic acid (RA), and ginsenoside Rg1 (GRg1 ), in rat plasma. The plasma samples were pretreated by protein precipitation with acetonitrile. Chromatographic separation was performed on a Waters Acquity UPLC® BEH C18 column (1...
February 1, 2017: Biomedical Chromatography: BMC
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