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https://www.readbyqxmd.com/read/28207326/micro-rna-146a-but-not-irak1-is-associated-with-rheumatoid-arthritis-in-the-tunisian-population
#1
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
#2
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
#3
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
https://www.readbyqxmd.com/read/28127980/speckle-tracking-can-detect-subclinical-myocardial-dysfunction-in-rheumatoid-arthritis-patients
#4
O Benacka, J Benacka, P Blazicek, M Belansky, J Payer, Z Killinger, J Lietava
INTRODUCTION: Patients with rheumatoid arthritis (RA) have shorter life expectancy and their risk of cardiovascular death is more than 50 % higher than the rest of the population. Early myocardial dysfunction in RA patients may be detectable sooner using speckle‑tracking echocardiography. METHOD: Cross-sectional study enrolled 55 patients with RA (mean age 44.1 years) without known cardiovascular disease and 31 healthy controls. All subjects underwent a standard echocardiographic examination: indexed left ventricular mass, left ventricle ejection fraction, isovolumic contraction and relaxation times (IVCT and IVRT), mitral valve inflow curve (E/A), septal mitral annular motion (e'), and E/e' ratio as well as the speckle tracking assessment of left ventricle longitudinal, radial and circular strain and strain rate...
2017: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/28107624/tocilizumab-alendronate-conjugate-for-treatment-of-rheumatoid-arthritis
#5
Hwiwon Lee, Suk Ho Bhang, Jeong Ho Lee, Hyemin Kim, Sei Kwang Hahn
An autoimmune disease of rheumatoid arthritis (RA) causes severe inflammation on the synovial membrane, which results in the destruction of articular cartilage and bone. Here, Tocilizumab (TCZ) - Alendronate (ALD) conjugate is synthesized for the early intervention of RA. A humanized monoclonal antibody of TCZ shows an immunosuppressive effect, targeting interleukin-6 (IL-6) receptor in the RA pathogenesis. ALD is an anti-inflammatory bisphosphonate drug which can bind to the exposed bone surface. ALD is conjugated selectively to N-glycan on Fc region of TCZ using a chemical linker of 3-(2-pyridyldithio) propionyl hydrazide (PDPH) - poly(ethylene glycol) - N-hydroxysuccinimide (PDPH-PEG-NHS)...
January 20, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28103312/increased-cardiovascular-events-and-subclinical-atherosclerosis-in-rheumatoid-arthritis-patients-1-year-prospective-single-centre-study
#6
Piero Ruscitti, Paola Cipriani, Francesco Masedu, Silvio Romano, Onorina Berardicurti, Vasiliki Liakouli, Francesco Carubbi, Paola Di Benedetto, Saverio Alvaro, Maria Penco, Marco Valenti, Roberto Giacomelli
OBJECTIVES: Several studies showed the close relationship between Rheumatoid Arthritis (RA) and cerebro-cardiovascular events (CVEs) and subclinical atherosclerosis. In this study, we investigated the occurrence of CVEs and subclinical atherosclerosis during the course of RA and we evaluated the possible role of both traditional cardiovascular (CV) and disease related risk factors to predict the occurrence of new CVEs and the onset of subclinical atherosclerosis. METHODS: We designed a single centre, bias-adjusted, prospective, observational study to investigate, in a homogeneous subset of RA patients, the occurrence of new onset of CVEs and subclinical atherosclerosis...
2017: PloS One
https://www.readbyqxmd.com/read/28056922/herbal-formula-xian-fang-huo-ming-yin-regulates-differentiation-of-lymphocytes-and-production-of-pro-inflammatory-cytokines-in-collagen-induced-arthritis-mice
#7
Jinyu Li, Yi Wei, Xue Li, Dashuai Zhu, Bo Nie, Jingwei Zhou, Lixia Lou, Bin Dong, Aiming Wu, Yongzhe Che, Meng Chen, Lingqun Zhu, Mingwei Mu, Limin Chai
BACKGROUND: Xian-Fang-Huo-Ming-Yin (XFHM), a traditional herbal formula, has been used to treat sores and carbuncles for hundreds of years in Asia. Nowadays, its clinical effects in treatment of rheumatoid arthritis (RA) have been validated. In this study, we want to study its possible molecular mechanisms of regulating the differentiation of lymphocytes and production of pro-inflammatory cytokines in collagen-induced arthritis (CIA) mice for RA treatment. METHODS: A high performance liquid chromatography-electrospray ionization/mass spectrometer (HPLC-ESI/MS(n)) system was used to analyze the constituents of XFHM granules...
January 5, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28053322/vav1-regulates-experimental-autoimmune-arthritis-and-is-associated-with-anti-ccp-negative-rheumatoid-arthritis
#8
A O Guerreiro-Cacais, U Norin, A Gyllenberg, R Berglund, A D Beyeen, E Petit-Teixeira, F Cornélis, A Saoudi, G J Fournié, R Holmdahl, L Alfredsson, L Klareskog, M Jagodic, T Olsson, I Kockum, L Padyukov
Rheumatoid arthritis (RA) patients can be stratified into two subgroups defined by the presence or absence of antibodies against citrullinated circular peptides (anti-CCP) with most of the genetic association found in anti-CCP positive RA. Here we addressed the role of VAV1, previously associated to multiple sclerosis (MS), in the pathogenesis of RA in experimental models and in a genetic association study. Experimental arthritis triggered by pristane or collagen type II was induced in DA rats and in the DA...
January 5, 2017: Genes and Immunity
https://www.readbyqxmd.com/read/28040536/th9-cells-and-il-9-in-autoimmune-disorders-pathogenesis-and-therapeutic-potentials
#9
REVIEW
Yaxiong Deng, Zijun Wang, Christopher Chang, Liwei Lu, Chak Sing Lau, Qianjin Lu
Naïve CD4(+) T cells are pleiotropically divided into various T helper (Th) cell subsets, according to their pivotal roles in the regulation of immune responses. The differentiation of Th9 cells, an interleukin (IL)-9 producing subset, can be impacted by specific environmental cues, co-stimulation with transforming growth factor β (TGF-β) and IL-4, and other regulatory factors. Although IL-9 has been recognized as a classical Th2-related cytokine, recent studies have indicated that IL-9-producing cells contribute to a group of autoimmune disorders including systemic lupus erythematosus (SLE), multiple sclerosis (MS), inflammatory bowel diseases (IBD), rheumatoid arthritis (RA) and psoriasis...
December 28, 2016: Human Immunology
https://www.readbyqxmd.com/read/28029270/intervening-to-reduce-the-risk-of-future-disability-from-multiple-sclerosis-are-we-there-yet
#10
Maurice Dahdaleh, Raed Alroughani, Mohammed Aljumah, Abdulrahman AlTahan, Issa Alsharoqi, Saeed A Bohlega, Abdulkader Daif, Dirk Deleu, Jihad Inshasi, Rana Karabudak, Mohammed A Sahraian, Karim Taha, Bassem I Yammout, Magd Zakaria
Disease-modifying therapies (DMTs) delay or may prevent the progression of patients with high-risk clinically isolated syndrome (CIS) to clinically definite multiple sclerosis (MS), and from relapsing-remitting MS to secondary progressive MS. Current evidence on the effects of DMT on disability in MS is supported by the use of the Expanded Disability Status Scale (EDSS), which is dominated by ambulation, and usually used as a secondary outcome measure. Less is known about the long-term effects of DMTs on other aspects of functional status, particularly cognition, which is a key determinant of ability to work...
December 28, 2016: International Journal of Neuroscience
https://www.readbyqxmd.com/read/28001129/a-multispectral-microscope-for-in-vivo-oximetry-of-rat-dorsal-spinal-cord-vasculature
#11
Marieke A van der Putten, Lewis E MacKenzie, Andrew L Davies, Javier Fernandez-Ramos, Roshni A Desai, Kenneth J Smith, Andrew R Harvey
Quantification of blood oxygen saturation (SO2) in vivo is essential for understanding the pathogenesis of diseases in which hypoxia is thought to play a role, including inflammatory disorders such as multiple sclerosis (MS) and rheumatoid arthritis (RA). We describe a low-cost multispectral microscope and oximetry technique for calibration-free absolute oximetry of surgically exposed blood vessels in vivo. We imaged the vasculature of the dorsal spinal cord in healthy rats, and varied inspired oxygen (FiO2) in order to evaluate the sensitivity of the imaging system to changes in SO2...
December 21, 2016: Physiological Measurement
https://www.readbyqxmd.com/read/27999285/simultaneous-determination-of-multiple-components-in-guanjiekang-in-rat-plasma-via-the-uplc-ms-ms-method-and-its-application-in-pharmacokinetic-study
#12
Jian Wu, Ying Xie, Zheng Xiang, Canjian Wang, Hua Zhou, Liang Liu
Guanjiekang (GJK) that is formed by five medicinal herbs including Astragali Radix, Aconiti Lateralis Radix Praeparaia, Glycyrrhizae Radix et Rhizoma, Corydalis Rhizoma and Paeoniae Radix Alba was used for the treatment of rheumatoid arthritis (RA). However, the pharmacokinetic (PK) profile of active components in GJK remains unclear. This study aims to evaluate the pharmacokinetic behavior of seven representative active constituents in GJK (i.e., benzoylhypaconine, benzoylmesaconine, paeoniflorin, tetrahydropalmatine, calycosin-7-glucoside, formononetin and isoliquiritigenin) after oral administration of GJK in rats...
December 16, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27928949/from-leflunomide-to-teriflunomide-drug-development-and-immunosuppressive-oral-drugs-in-the-treatment-of-multiple-sclerosis
#13
Lilian Aly, Bernhard Hemmer, Thomas Korn
Immunosuppressive drugs have been used in the treatment of multiple sclerosis (MS) for a long time. Today, the increased number of approved substances and the possibility of an oral availability of some immunomodulators improve the therapeutic repertory and increase patient satisfaction and compliance. Teriflunomide is indicated as first line oral disease modifying therapy (DMT) in relapsing-remitting MS (RRMS). Its immunosuppressive capacity results from an inhibition of de novo pyrimidine synthesis in rapidly proliferating lymphocytes...
December 8, 2016: Current Neuropharmacology
https://www.readbyqxmd.com/read/27920546/chronotherapy-with-low-dose-modified-release-prednisone-for-the-management-of-rheumatoid-arthritis-a-review
#14
REVIEW
Stefano Paolo Beltrametti, Aurora Ianniello, Clara Ricci
To date, rheumatoid arthritis (RA) remains a debilitating, life-threatening disease. One major concern is morning symptoms (MS), as they considerably impair the patients' quality of life and ability to work. MS change in a circadian fashion, resembling the fluctuations of inflammatory cytokines such as interleukin-6, whose levels are higher in RA patients compared to healthy donors. Conversely, serum levels of the potent anti-inflammatory glucocorticoid cortisol are similar to that of healthy subjects, suggesting an imbalance that sustains a pro-inflammatory state...
2016: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/27881095/a-regional-consensus-recommendation-on-brain-atrophy-as-an-outcome-measure-in-multiple-sclerosis
#15
Raed Alroughani, Dirk Deleu, Khalid El Salem, Jasem Al-Hashel, K John Alexander, Mohamed Assem Abdelrazek, Adel Aljishi, Jaber Alkhaboori, Faisal Al Azri, Nahida Al Zadjali, Majed Hbahbih, Tag Eldin Sokrab, Mohamed Said, Àlex Rovira
BACKGROUND: Multiple sclerosis (MS) is a chronic autoimmune disease characterized by inflammatory and neurodegenerative processes leading to irreversible neurological impairment. Brain atrophy occurs early in the course of the disease at a rate greater than the general population. Brain volume loss (BVL) is associated with disability progression and cognitive impairment in patients with MS; hence its value as a potential target in monitoring and treating MS is discussed. METHODS: A group of MS neurologists and neuro-radiologists reviewed the current literature on brain atrophy and discussed the challenges in assessing and implementing brain atrophy measurements in clinical practice...
November 24, 2016: BMC Neurology
https://www.readbyqxmd.com/read/27879053/n-arylsulfonyl-indolines-as-retinoic-acid-receptor-related-orphan-receptor%C3%A2-%C3%AE-ror%C3%AE-agonists
#16
Christelle Doebelin, Rémi Patouret, Ruben D Garcia-Ordonez, Mi Ra Chang, Venkatasubramanian Dharmarajan, Dana S Kuruvilla, Scott J Novick, Li Lin, Michael D Cameron, Patrick R Griffin, Theodore M Kamenecka
The nuclear retinoic acid receptor-related orphan receptor γ (RORγ; NR1F3) is a key regulator of inflammatory gene programs involved in T helper 17 (TH 17) cell proliferation. As such, synthetic small-molecule repressors (inverse agonists) targeting RORγ have been extensively studied for their potential as therapeutic agents for various autoimmune diseases. Alternatively, enhancing TH 17 cell proliferation through activation (agonism) of RORγ may boost an immune response, thereby offering a potentially new approach in cancer immunotherapy...
December 6, 2016: ChemMedChem
https://www.readbyqxmd.com/read/27875788/simultaneous-determination-and-pharmacokinetic-study-of-four-phenolic-acids-in-rat-plasma-using-uflc-ms-ms-after-intravenous-administration-of-salvianolic-acid-for-injection
#17
Xiuman Xie, Jingzhuo Miao, Wanyang Sun, Jingyi Huang, Dongxiang Li, Shuming Li, Ling Tong, Guoxiang Sun
A simple, sensitive and selective ultra-fast liquid chromatography-tandem mass spectrometry (UFLC-MS/MS) method was established for simultaneous determination and pharmacokinetic study of rosmarinic acid (RA), salvianolic acid D (Sal D), lithospermic acid (LA) and salvianolic acid B (Sal B) in rat plasma after intravenous administration of salvianolic acid for injection (SAFI). Three doses of administration, containing 14, 28 and 56mg/kg, were investigated in this study. Plasma samples were pretreated using protein precipitation (PP) with pre-cooled acetonitrile...
February 5, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/27833448/a-possible-link-between-the-epstein-barr-virus-infection-and-autoimmune-thyroid-disorders
#18
REVIEW
Anna Dittfeld, Katarzyna Gwizdek, Marek Michalski, Romuald Wojnicz
The Epstein-Barr virus (EBV), also known as human herpesvirus 4, is a member of the Herpesviridae virus family. EBV infection can cause infectious mononucleosis (IM) in the lytic phase of EBV's life cycle. Past EBV infection is associated with lymphomas, and may also result in certain allergic and autoimmune diseases. Although potential mechanisms of autoimmune diseases have not been clearly elucidated, both genetic and environmental factors, such as infectious agents, are considered to be responsible for their development...
2016: Central-European Journal of Immunology
https://www.readbyqxmd.com/read/27831763/thyroid-patient-salivary-radioiodine-transit-and-dysfunction-assessment-using-chewing-gums
#19
Demetrios Okkalides
Radiation-induced salivary gland dysfunction is the most frequent side-effect of I-131 thyroid therapy. Here, a novel saliva sampling method with ordinary chewing gums administered to the patients at appropriate time intervals post-treatment (TIPT) was used to relate this effect to chewing gum saliva activity (CGSA) content. Saliva samples were acquired after the oral administration of prescribed I-131 activity (radioactivity administered [RA]) to 19 differentiated thyroid cancer (DTC) and 16 hyperthyroidism patients of the radioisotope unit (RIU) during 2014 and 2015...
November 2016: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/27830970/assessment-of-both-articular-synovitis-and-tenosynovitis-by-ultrasound-is-useful-for-evaluations-of-hand-dysfunction-in-early-rheumatoid-arthritis-patients
#20
Ayako Nishino, Shin-Ya Kawashiri, Toshimasa Shimizu, Masataka Umeda, Shoichi Fukui, Tomohiro Koga, Naoki Iwamoto, Kunihiro Ichinose, Mami Tamai, Hideki Nakamura, Tomoki Origuchi, Yasuhiro Nagata, Takahiro Maeda, Kiyoshi Aoyagi, Atsushi Kawakami
OBJECTIVES: We investigated the association between hand dysfunction and ultrasound (US)-detected articular synovitis and tenosynovitis in patients with rheumatoid arthritis (RA). METHODS: Thirty RA patients were examined. In both hands of all subjects, articular synovitis and tenosynovitis were assessed by US at 22 joints and 12 tendons. Each joint and tendon was scored by gray-scale (GS) and power Doppler (PD) on a scale from 0 to 3. The sums of the GS or PD scores were used as the articular synovitis score and the tenosynovitis score...
November 15, 2016: Modern Rheumatology
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