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Rheumatoid arthritis oxidative stress

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https://www.readbyqxmd.com/read/28049097/in-vivo-anti-arthritic-efficacy-of-camellia-sinensis-l-in-collagen-induced-arthritis-model
#1
Ankit Tanwar, Raman Chawla, Md Meraj Ansari, Neha, Pallavi Thakur, Ankita Singh Chakotiya, Rajeev Goel, Himanshu Ojha, M Asif, Mitra Basu, Rajesh Arora, Haider Ali Khan
BACKGROUND: Rheumatoid arthritis (RA), an autoimmune inflammatory disorder with synovial hyperplasia, destruction of cartilage, bone damage is often associated with risk of infections. Such risk could be attributed towards usage of immunosuppressive agents. Thus, the present study was undertaken to evaluate the anti-arthritic efficacy of aquo-alcoholic extract of Camellia sinensis (L.). MATERIAL AND METHODS: Dried leaves of Camellia sinensis (L.) or Cs were filtered and extracted in 1:1 aqueous: ethanol by Soxhlet apparatus followed by lyophilization and spray drying to develop amorphous powder...
December 31, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28045034/premature-senescence-of-endothelial-cells-upon-chronic-exposure-to-tnf%C3%AE-can-be-prevented-by-n-acetyl-cysteine-and-plumericin
#2
Shafaat Y Khan, Ezzat M Awad, Andre Oszwald, Manuel Mayr, Xiaoke Yin, Birgit Waltenberger, Hermann Stuppner, Markus Lipovac, Pavel Uhrin, Johannes M Breuss
Cellular senescence is characterized by a permanent cell-cycle arrest and a pro-inflammatory secretory phenotype, and can be induced by a variety of stimuli, including ionizing radiation, oxidative stress, and inflammation. In endothelial cells, this phenomenon might contribute to vascular disease. Plasma levels of the inflammatory cytokine tumor necrosis factor alpha (TNFα) are increased in age-related and chronic conditions such as atherosclerosis, rheumatoid arthritis, psoriasis, and Crohn's disease. Although TNFα is a known activator of the central inflammatory mediator NF-κB, and can induce the intracellular generation of reactive oxygen species (ROS), the question whether TNFα can induce senescence has not been answered conclusively...
January 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28027930/tocilizumab-improves-the-proatherothrombotic-profile-of-rheumatoid-arthritis-patients-modulating-endothelial-dysfunction-netosis-and-inflammation
#3
P Ruiz-Limón, R Ortega, I Arias de la Rosa, M C Abalos-Aguilera, C Perez Sanchez, Y Jimenez Gomez, E Peralbo-Santaella, P Font, D Ruiz-Vilches, G Ferrin, E Collantes-Estevez, A Escudero, C H López Pedrera, N Barbarroja
Tocilizumab (TCZ) is an effective treatment for rheumatoid arthritis (RA). However, the changes that occurred after TCZ therapy on endothelial dysfunction, monocyte activity, NETosis, and oxidative stress, the principal effectors of atherosclerosis and cardiovascular disease, have not been analyzed yet. A total of 20 RA patients received 162 mg per week subcutaneous TCZ for 6 months. Endothelial function was measured through postocclusive hyperemia using Laser Doppler. Oxidative stress markers in monocytes and neutrophils were analyzed by flow cytometry...
December 9, 2016: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/27937009/the-anti-arthritic-activity-of-total-glycosides-from-pterocephalus-hookeri-a-traditional-tibetan-herbal-medicine
#4
Xiao-Fei Shen, Yong Zeng, Jia-Chuan Li, Ce Tang, Yi Zhang, Xian-Li Meng
CONTEXT: Pterocephalus hookeri (C. B. Clarke) Hock., a traditional Tibetan herbal medicine rich in glycosides, has been used to treat several diseases including rheumatoid arthritis. OBJECTIVE: To evaluate the anti-arthritic activity of total glycosides from P. hookeri, and its possible mechanisms of action. MATERIALS AND METHODS: Anti-arthritic activity of total glycosides from P. hookeri (oral administration for 30 days at 14-56 mg/kg) was evaluated using paw swelling, arthritis scores and histopathological measurement in adjuvant-induced arthritis (AA) Sprague-Dawley rats...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27908303/dna-damage-increase-in-peripheral-neutrophils-from-patients-with-rheumatoid-arthritis-is-associated-with-the-disease-activity-and-the-presence-of-shared-epitope
#5
Gustavo Martelli-Palomino, Adriana B Paoliello-Paschoalato, Janaina C O Crispim, Diane M Rassi, Rene D Oliveira, Paulo Louzada, Yara Maria Lucisano-Valim, Eduardo A Donadi
OBJECTIVES: Neutrophils play a major role in rheumatoid arthritis (RA) pathogenesis. We aimed to evaluate if neutrophil DNA damage in RA patients is associated with the disease activity, autoantibodies status, carriage of the RA shared epitope (SE) and treatment. METHODS: DNA damage was assessed by alkaline comet assay in peripheral blood (77 patients and 55 healthy controls) and in 10 RA synovial fluid neutrophils. Evaluation of the respiratory burst of 30 patients with RA and 30 healthy controls was done...
November 14, 2016: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/27889698/major-involvement-of-bacterial-components-in-rheumatoid-arthritis-and-its-accompanying-oxidative-stress-systemic-inflammation-and-hypercoagulability
#6
Etheresia Pretorius, Oore-Ofe Akeredolu, Prashilla Soma, Douglas B Kell
We review the evidence that infectious agents, including those that become dormant within the host, have a major role to play in much of the etiology of rheumatoid arthritis and the inflammation that is its hallmark. This occurs in particular because they can produce cross-reactive (auto-)antigens, as well as potent inflammagens such as lipopolysaccharide that can themselves catalyze further inflammagenesis, including via β-amyloid formation. A series of observables coexist in many chronic, inflammatory diseases as well as rheumatoid arthritis...
November 25, 2016: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27856937/allylpyrocatechol-attenuates-collagen-induced-arthritis-via-attenuation-of-oxidative-stress-secondary-to-modulation-of-the-mapk-jak-stat-and-nrf2-ho-1-pathways
#7
Soumita De, Alak Manna, Sunanda Kundu, Sritama De Sarkar, Uttara Chatterjee, Tuhinadri Sen, Subrata Chattopadhyay, Mitali Chatterjee
Rheumatoid arthritis (RA), an inflammatory autoimmune disorder, is characterized by synovial hyperplasia and bony destruction. The pathogenesis of RA includes redox dysregulation, concomitant with increased levels of proinflammatory mediators. As the ability of allylpyrocatechol (APC), a phytoconstituent of Piper betle leaves, to alleviate oxidative stress has been demonstrated in patients with RA, its antiarthritic activity was evaluated in an animal model of arthritis, and the underlying mechanism(s) of action clarified...
February 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/27830032/molecular-hydrogen-decelerates-rheumatoid-arthritis-progression-through-inhibition-of-oxidative-stress
#8
Jia Meng, Pan Yu, Hui Jiang, Tao Yuan, Naicheng Liu, Jian Tong, Haiyan Chen, Nirong Bao, Jianning Zhao
Rheumatoid arthritis (RA) is a chronic inflammatory disease which results in progressive destruction of the joint. In this study, we examined if the hydrogen could inhibit inflammation in a mouse model of collagen-induced arthritis (CIA) via oxidative stress on RA-FLSs. Moreover, to identify the mechanisms of action, we evaluated the effect of hydrogen on RA-FLSs development and the expression of pro-inflammatory cytokines and signaling pathways. Based on our result, H2 enriched medium can increase super oxide dismutase (SOD) level following H2O2 treatment and decrease 8-hydroxy-2'-deoxyguanosine (8-OHdG) level...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27824549/acpas-are-much-more-than-diagnostic-autoantibodies
#9
REVIEW
Abdulla Watad, Howard Amital
Anti-citrullinated protein autoantibodies (ACPAs) are the major autoantibodies in rheumatoid arthritis (RA). Anti-citrullinated protein autoantibodies are directed against different citrullinated antigens, including filaggrin, fibrinogen, vimentin, and collagen. Presence of ACPA is associated with joint damage and extra-articular manifestations, suggesting that ACPAs are most likely pathogenic autoantibodies in RA. In vitro, ACPAs induce macrophage tumor necrosis factor alpha (TNF-α) production, osteoclastogenesis, and complement activation...
October 31, 2016: Rambam Maimonides Medical Journal
https://www.readbyqxmd.com/read/27816506/the-genus-rosa-and-arthritis-overview-on-pharmacological-perspectives
#10
REVIEW
Brian Chi Yan Cheng, Xiu-Qiong Fu, Hui Guo, Ting Li, Zheng-Zhi Wu, Kelvin Chan, Zhi-Ling Yu
The genus Rosa (roses) has long been used in traditional or folk medicine worldwide for the treatment of various types of arthritis including rheumatoid arthritis and osteoarthritis. The active constituents of Rosa spp., such as flavonoids, triterpenoids, and phytosterols, could act on different targets in the NF-κB signalling pathway, inhibit pro-inflammatory enzymes (e.g. MMPs and COX-2), lower the production of inflammatory cytokines and chemokines (e.g. TNF-α, IL-1β, IL-6, CCL5), and reduce oxidative stress, which in turn suppress inflammatory processes...
December 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/27814748/glucocorticoids-and-endothelial-function-in-inflammatory-diseases-focus-on-rheumatoid-arthritis
#11
REVIEW
Frank Verhoeven, Clément Prati, Katy Maguin-Gaté, Daniel Wendling, Céline Demougeot
Rheumatoid arthritis (RA) is the most common systemic autoimmune disease characterized by articular and extra-articular manifestations involving cardiovascular (CV) diseases. RA increases the CV mortality by up to 50 % compared with the global population and CV disease is the leading cause of death in patients with RA. There is growing evidence that RA favors accelerated atherogenesis secondary to endothelial dysfunction (ED) that occurs early in the course of the disease. ED is a functional and reversible alteration of endothelial cells, leading to a shift of the actions of the endothelium towards reduced vasodilation, proinflammatory state, proliferative and prothrombotic properties...
November 5, 2016: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/27813112/developmental-toxicity-of-auranofin-in-zebrafish-embryos
#12
Xiao-Yan Gao, Kang Li, Ling-Ling Jiang, Ming-Fang He, Cun-Hai Pu, Dongzhou Kang, Jingjing Xie
Auranofin (AF) is used in clinic for the treatment of rheumatoid arthritis, repurposing of AF as an anticancer drug has just finished a phase I/II clinical trial, but the developmental toxicity of AF remains obscure. This study focused on its developmental toxicity by using zebrafish embryos. Zebrafish embryos were exposed to different concentrations (1, 2.5, 5, 10 μm) of AF from 2 h post-fertilization (hpf) to 72 hpf. At 72 hpf, two major developmental defects caused by AF were found, namely severe pericardial edema and hypopigmentation, when embryos were exposed to concentrations higher than 2...
November 4, 2016: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/27778459/infliximab-is-equivalently-suppressing-oxidative-stress-compared-to-tocilizumab-among-well-controlled-patients-with-rheumatoid-arthritis
#13
Kazuha Kizaki, Fumiharu Yamashita, Tomoya Hayashi, Noboru Funakoshi
AIM: This study was designed to investigate which biological agent, infliximab or tocilizumab, would more intensively keep suppressing oxidative stress among well-controlled patients as C-reactive protein (CRP) levels normalized in rheumatoid arthritis (RA). In addition, it was intended to clarify indicative factors of oxidative stress among well-controlled patients with RA. METHODS: We recruited 61 well-controlled (CRP < 0.3 mg/dL within normal ranges) patients with RA using biological agents (infliximab n = 33; tocilizumab n = 28), active RA patients with CRP > 1...
October 24, 2016: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/27755546/metabolite-and-lipid-profiling-of-biobank-plasma-samples-collected-prior-to-onset-of-rheumatoid-arthritis
#14
Izabella Surowiec, Lisbeth Ärlestig, Solbritt Rantapää-Dahlqvist, Johan Trygg
OBJECTIVE: The early diagnosis of rheumatoid arthritis (RA) is desirable to install treatment to prevent disease progression and joint destruction. Autoantibodies and immunological markers pre-date the onset of symptoms by years albeit not all patients will present these factors, even at disease onset. Additional biomarkers would be of high value to improve early diagnosis and understanding of the process, leading to disease development. METHODS: Plasma samples donated before the onset of RA were identified in the Biobank of Northern Sweden, a collection within national health survey programs...
2016: PloS One
https://www.readbyqxmd.com/read/27754164/sy-11-4-connective-tissue-disease-and-its-association-with-arterial-hypertension
#15
Michael J Ryan
Connective tissue diseases including systemic lupus erythematosus (SLE), rheumatoid arthritis, and scleroderma, have a strong predilection for women and are associated with a marked increase in the prevalence of hypertension. The mechanisms leading to the increased risk of hypertension in these patients remain unclear; however, they are likely related to immune mediated changes in cardiovascular and renal function. Over the past several years, we have elucidated a number of factors that contribute to the development of hypertension during SLE using a widely established experimental model of SLE, the female NZBWF1 mouse...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27747452/sesame-oil-and-rice-bran-oil-ameliorates-adjuvant-induced-arthritis-in-rats-distinguishing-the-role-of-minor-components-and-fatty-acids
#16
Nayana Venugopal Yadav, Sadashivaiah, Breetha Ramaiyan, Pooja Acharya, Lokesh Belur, Ramaprasad Ravichandra Talahalli
Though present in small amounts, the minor constituents of dietary oils may supplement the dietary therapies for rheumatoid arthritis (RA). Hence, in the present study, we assessed the effect of minor constituents from sesame oil (SO) and rice bran oil (RBO) and their fatty acids on the severity of adjuvant-induced arthritis in experimental rats. Rats were gavaged with 1 mL of SO or RBO or groundnut oil (GNO, control) with or without its minor components for a period 15 days before and 15 days after the induction of arthritis...
October 17, 2016: Lipids
https://www.readbyqxmd.com/read/27721914/dietary-phytochemicals-natural-swords-combating-inflammation-and-oxidation-mediated-degenerative-diseases
#17
REVIEW
Md Asiful Islam, Fahmida Alam, Md Solayman, Md Ibrahim Khalil, Mohammad Amjad Kamal, Siew Hua Gan
Cumulatively, degenerative disease is one of the most fatal groups of diseases, and it contributes to the mortality and poor quality of life in the world while increasing the economic burden of the sufferers. Oxidative stress and inflammation are the major pathogenic causes of degenerative diseases such as rheumatoid arthritis (RA), diabetes mellitus (DM), and cardiovascular disease (CVD). Although a number of synthetic medications are used to treat these diseases, none of the current regimens are completely safe...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27720800/redox-signaling-in-rheumatoid-arthritis-and-the-preventive-role-of-polyphenols
#18
REVIEW
Somaiya Mateen, Shagufta Moin, Atif Zafar, Abdul Qayyum Khan
Rheumatoid arthritis (RA) is an autoimmune, inflammatory joint disease whose exact cause is still not completely known. Reactive oxygen species (ROS) are believed to be involved in the pathogenesis of RA. ROS are produced mostly by the phagocytic cells during oxidative burst and oxidative phosphorylation. Lipids, proteins and nucleic acids get damaged by the overproduction of ROS. Damaging effects of ROS are taken care by the enzymatic and non-enzymatic defence system of the body. Overproduction or inadequate elimination of reactive species leading to oxidative stress has been positively correlated with the disease severity in RA patients...
December 1, 2016: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/27719647/cardiovascular-toxicity-of-cyclooxygenase-inhibitors-and-promising-natural-substitutes
#19
Mahmoud Bahmani, Amir Sarrafchi, Hedayatollah Shirzad, Sedigheh Asgari, Mahmoud Rafieian-Kopaei
Non-steroidal anti-inflammatory drugs (NSAIDs) are a group of drugs which are used for a wide variety of diseases including pain and inflammatory conditions such as osteoarthritis, rheumatoid arthritis, musculoskeletal disorders, and other comorbid complications. However, this group of drugs have undesirable effects such as peptic ulcer, bleeding and renal failure. Some of these side effects are associated with or caused by generation of oxidative stress. Following the withdrawal of a cyclo-oxygenase-2 (COX-2) inhibitor drug, rofecoxib (VIOXX®) due to cardiovascular complications, scientists suggested that natural COX-2 inhibitors might provide valuable alternatives to COX inhibitors...
October 6, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27683135/effective-tumour-necrosis-factor-blocking-therapy-reduces-reactive-oxygen-metabolite-level-in-rheumatoid-arthritis
#20
Fabio Cacciapaglia, Maria Grazia Anelli, Daniela Rizzo, Emma Morelli, Daniela Mazzotta, Crescenzio Scioscia, Florenzo Iannone, Giovanni Lapadula
OBJECTIVE: To assess circulating levels of derived reactive oxygen metabolites (ROMs) in patients with active rheumatoid arthritis (RA), before and during antitumour necrosis factor (TNF)-α therapy. METHODS: Patients with active RA and failed previous treatment with disease-modifying antirheumatic drugs received subcutaneous anti-TNF-α for 52 weeks. Circulating hydrogen peroxide was quantified as a marker of oxidative stress at baseline and at 24 and 52 weeks...
September 2016: Journal of International Medical Research
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