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"Nitrate" and "Rheumatoid Arthritis"

Svetlana B Panina, Igor V Krolevets, Natalia P Milyutina, Alexander B Sagakyants, Igor V Kornienko, Anzhelika A Ananyan, Mikhail A Zabrodin, Andrey A Plotnikov, Valeriy V Vnukov
BACKGROUND: The identification of biomarkers of post-traumatic osteoarthritis (PTOA) progression is of clinical importance. The aims of this study were: (1) to assess the abilities of various soluble proinflammatory mediators in plasma to distinguish patients with knee PTOA from controls; (2) to determine the correlations between the mediators in plasma and those mediators in synovial fluid (SF); and (3) to explore the associations of the mediators with radiographic PTOA severity. MATERIALS AND METHODS: The concentrations of IL-1β, IL-6, IL-18, TNFα, and leptin were measured using ELISA...
December 2017: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
Jaya Kumar, Seong Lin Teoh, Srijit Das, Pasuk Mahakknaukrauh
Oxidative stress occurs in diabetes, various cancers, liver diseases, stroke, rheumatoid arthritis, chronic inflammation, and other degenerative diseases related to the nervous system. The free radicals have deleterious effect on various organs of the body. This is due to lipid peroxidation and irreversible protein modification that leads to cellular apoptosis or programmed cell death. During recent years, there is a rise in the oral diseases related to oxidative stress. Oxidative stress in oral disease is related to other systemic diseases in the body such as periodontitis, cardiovascular, pancreatic, gastric, and liver diseases...
2017: Frontiers in Physiology
Md Asad Khan, Khursheed Alam, Md Zafaryab, M Moshahid A Rizvi
Under physiological conditions, reactive nitrogen and oxygen species are produced continuously. However, excess of these radicals may damage biomolecules like lipids, proteins and nucleic acids. These reactive species have been implicated in many disease conditions including acute/chronic inflammation, rheumatoid arthritis (RA), neurodegenerative diseases and systemic lupus erythematosus (SLE). Peroxynitrite, an oxidant and nitrating molecule, formed in in vivo, when nitric oxide reacts with superoxide radical...
September 2017: Biochimie
Sahil Kumar, Rajesh K Singh, T R Bhardwaj
NO has many physiological roles; in inflammation, pain, rheumatoid arthritis, immune system, gastroprotection, as antioxidant and reported to be a free radical scavenger.Intensive research on the biological functions of NO and other reactive nitrogen oxide species demands exogenous sources of NO donors as research tools and pharmaceuticals. Since the mid-1980s, the development of new NO donors has offered several advantages over theprevious NO donors, such as spontaneous release of NO, donation of NO under controlled rates, and even the targeting of NO to certain tissues...
January 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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
Hani M Khojah, Sameh Ahmed, Mahran S Abdel-Rahman, Al-Badr Hamza
Reactive oxygen species (ROS) and reactive nitrogen species (RNS) have distinct contribution to the destructive, proliferative synovitis of rheumatoid arthritis (RA) and play a prominent role in cell-signaling events. However, few studies had clarified the role of individual ROS and RNS in the etiopathogenesis of RA. To date, most of the studies were concerned with the measurement of the total oxidative and nitrative stress levels in RA. The aim of this study was to monitor the levels of individual ROS and RNS to emphasize the role that each plays in the pathogenesis of RA and their usefulness as possible biomarkers for the disease activity...
August 2016: Free Radical Biology & Medicine
Mir Yasir Arfat, Zarina Arif, Sumit Kumar Chaturvedi, Moinuddin, Khursheed Alam
IgG is an important defence protein. To exhibit optimum function the molecule must maintain its native structure. Peroxynitrite is a potent oxidizing and nitrating agent produced in vivo under pathophysiological conditions. It can oxidize and/or nitrate various amino acids causing changes in the structure and function of proteins. Such proteins may be involved in the pathogenesis of many inflammatory diseases, including rheumatoid arthritis. In the present work, peroxynitrite-induced structural changes in IgG have been studied by UV-visible, fluorescence, CD, FT-IR, DLS spectroscopy and DSC as well as by SDS-PAGE...
August 1, 2016: Archives of Biochemistry and Biophysics
Atef M M Attia, Fatma A A Ibrahim, Noha A Abd El-Latif, Samir W Aziz, Azhar M Elwan, Abdel Aziz A Abdel Aziz, Aliaa Elgendy, Fatema T Elgengehy
BACKGROUND AND OBJECTIVE: The laser acupuncture has many potential therapeutic effects. Currently, they are not evaluated for their therapeutic effects on rheumatoid arthritis (RA) patients. The aim of this study was to investigate the effects of laser acupuncture on the oxidative and antioxidative markers, as well as the inflammatory markers and disease activity of RA patients. DESIGN/MATERIALS AND METHODS: The study was conducted on 30 RA patients and 20 healthy subjects...
July 2016: Lasers in Surgery and Medicine
Matteo Nicola Dario Di Minno, Pasquale Ambrosino, Roberta Lupoli, Alessandro Di Minno, Marco Tasso, Rosario Peluso, Elena Tremoli
BACKGROUND: Several studies reported an increased cardiovascular (CV) morbidity and mortality in patients with rheumatoid arthritis (RA). Flow-mediated (FMD) and nitrate-mediated dilation (NMD) are considered non-invasive methods to assess endothelial function and surrogate markers of subclinical atherosclerosis. METHODS: We performed a systematic review with meta-analysis and meta-regression of literature studies evaluating the impact of RA on FMD and NMD. Studies evaluating the relationship between RA and markers of CV risk (FMD and NMD) were systematically searched in the PubMed, Web of Science, Scopus and EMBASE databases...
December 2015: European Journal of Internal Medicine
Mariana Marques Nogueira Wendt, Anacharis Babeto de Sá-Nakanishi, Cristiane Vizioli de Castro Ghizoni, Ciomar Aparecida Bersani Amado, Rosane Marina Peralta, Adelar Bracht, Jurandir Fernando Comar
The purpose of the present study was to evaluate the oxidative status of the brain of arthritic rats, based mainly on the observation that arthritis induces a pronounced oxidative stress in the liver of arthritis rats and that morphological alterations have been reported to occur in patients with rheumatoid arthritis. Rats with adjuvant-induced arthritis were used. These animals presented higher levels of reactive oxygen species (ROS) in the total brain homogenate (25% higher) and in the mitochondria (+55%) when compared to healthy rats...
June 2015: Experimental and Molecular Pathology
Otto R Maarsingh, Hanneke Stam, Peter M van de Ven, Natasja M van Schoor, Matthew J Ridd, Johannes C van der Wouden
BACKGROUND: The current diagnosis-oriented approach of dizziness does not suit older patients. Often, it is difficult to identify a single underlying cause, and when a diagnosis is made, therapeutic options may be limited. Identification of predictors of dizziness may provide new leads for the management of dizziness in older patients. The aim of the present study was to investigate long-term predictors of regular dizziness in older persons. METHODS: Population-based cohort study of 1,379 community-dwelling participants, aged ≥60 years, from the Longitudinal Aging Study Amsterdam (LASA)...
December 15, 2014: BMC Geriatrics
Yan Xu, Xin Wen, Li-Shu Wen, Ling-Yun Wu, Nai-Yang Deng, Kuo-Chen Chou
Nitrotyrosine is one of the post-translational modifications (PTMs) in proteins that occurs when their tyrosine residue is nitrated. Compared with healthy people, a remarkably increased level of nitrotyrosine is detected in those suffering from rheumatoid arthritis, septic shock, and coeliac disease. Given an uncharacterized protein sequence that contains many tyrosine residues, which one of them can be nitrated and which one cannot? This is a challenging problem, not only directly related to in-depth understanding the PTM's mechanism but also to the nitrotyrosine-based drug development...
2014: PloS One
Chuan-Xian Mu, Guo-Ling Liu, Hua Tian, Yi-Chuan Li, Yi-Ling Huang
OBJECTIVE: To observe the effect of Tetramethyl pyrazine (TMP) on the cytokines and inflammatory mediators in the serum and the synovial fluid of collagen-induced arthritis (CIA)rats, and further to investigate its possible mechanisms for treating rheumatoid arthritis (RA). METHODS: Type II CIA rat model was established. Rats in the TMP group were administered with TMP at 50 mg/kg and 100 mg/kg, once daily. Dexamethasone at 2.0 mg/kg was intramuscularly injected to those in the Dexamethasone treated group, once daily...
February 2014: Chinese Journal of Integrated Traditional and Western Medicine
Jae-Hyeog Choi, Jong-Hwan Lee, Kug-Hwan Roh, Su-Kil Seo, Il-Whan Choi, Sae-Gwang Park, Jun-Goo Lim, Won-Jin Lee, Myoung-Hun Kim, Kwang-rae Cho, Young-Jae Kim
Rheumatoid arthritis (RA) is a chronic autoimmune inflammatory disease. Gallium nitrate has been reported to reserve immunosuppressive activities. Therefore, we assessed the therapeutic effects of gallium nitrate in the mouse model of developed type II collagen-induced arthritis (CIA). CIA was induced by bovine type II collagen with Complete Freund's adjuvant. CIA mice were intraperitoneally treated from day 36 to day 49 after immunization with 3.5mg/kg/day, 7mg/kg/day gallium nitrate or vehicle. Gallium nitrate ameliorated the progression of mice with CIA...
May 2014: International Immunopharmacology
Jiangning Wang, Xiaorong Li, Lei Gao, Xueyan Wang
BACKGROUND: Folium Hibisci Mutabilis was one of the traditional Chinese medicines with pharmacological activities of wound healing, antibacterial and anti-inflammatory, normally applied to the clinical treatment of local purulent infection, scald, and epidemic parotitis. However, few people reported that its effects of extracts on RAW264.7, cells and TNF-α, IL-6, and NO levels in rats serum of inflammation rats. MATERIALS AND METHODS: We mainly adopted the RAW264...
2014: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
M Asad Khan, Kiran Dixit, Moinuddin, Zarina Arif, Khursheed Alam
Peroxynitrite is a powerful nitrating and oxidizing molecule and capable of modifying proteins' structure. Hyper-nitration of tyrosine residues has been seen in various pathological states, including autoimmune disorders like systemic lupus erythematosus (SLE) and rheumatoid arthritis. SLE, a chronic autoimmune disease, is primarily characterized by increased levels of autoantibodies, predominantly against ds-DNA. However, the initial antigenic stimulus for the disease etiopathogenesis has remained elusive...
February 2014: Biochimie
Olav Albert Christophersen
There are several animal experiments showing that high doses of ionizing radiation lead to strongly enhanced leakage of taurine from damaged cells into the extracellular fluid, followed by enhanced urinary excretion. This radiation-induced taurine depletion can itself have various harmful effects (as will also be the case when taurine depletion is due to other causes, such as alcohol abuse or cancer therapy with cytotoxic drugs), but taurine supplementation has been shown to have radioprotective effects apparently going beyond what might be expected just as a consequence of correcting the harmful consequences of taurine deficiency per se...
2012: Microbial Ecology in Health and Disease
Eun Jin Yang, Sun-Mi Choi
Amyotrophic lateral sclerosis (ALS) is a progressively paralytic neurodegenerative disease that can be caused by mutations in Cu/Zn-superoxide dismutase 1 (SOD1). Transgenic mice that overexpress mutant SOD1 develop paralysis and accumulate aggregates of mutant protein in the brainstem and spinal cord. Bee venom (BV), which is also known as apitoxin, is extracted from honeybees and is commonly used in oriental medicine for the treatment of chronic rheumatoid arthritis and osteoarthritis. The purpose of the present study was to determine whether BV affects misfolded protein aggregates such as alpha-synuclein, which is a known pathological marker in Parkinson disease, and ubiquitin-proteasomal activity in hSOD1(G93A) mutant mice...
2013: Evidence-based Complementary and Alternative Medicine: ECAM
Suad AlFadhli
The purpose of this study was to analyse the effect of the T-786C polymorphism and intron 4 27 bp variable number tandem repeat(VNTR) eNOS markers for their potential association with Systemic Lupus Erythematosus(SLE), Hashimotos thyroiditis(HT) and Rheumatoid arthritis(RA) as well as to explore their effect on eNOS mRNA expression and nitrate production(NOx). Kuwaitis (n=383) matched by age, gender and ethnicity were genotyped by fluorescent-labelled-restriction fragment length polymorphism (RFLP) and fragment analysis...
2013: Disease Markers
Anuradha Vivekanandan-Giri, Jessica L Slocum, Jaeman Byun, Chongren Tang, Robin L Sands, Brenda W Gillespie, Jay W Heinecke, Rajiv Saran, Mariana J Kaplan, Subramaniam Pennathur
OBJECTIVE: Phagocyte-derived myeloperoxidase (MPO) and pro-inflammatory high density lipoprotein (HDL) associate with rheumatoid arthritis (RA), but the link between MPO and HDL has not been systematically examined. In this study, we investigated whether MPO can oxidise HDL and determined MPO-specific oxidative signature by apoA-1 by peptide mapping in RA subjects with and without known cardiovascular disease (CVD). METHODS: Two MPO oxidation products, 3-chlorotyrosine and 3-nitrotyrosine, were quantified by tandem mass spectrometry (MS/MS) in in vitro model system studies and in plasma and HDL derived from healthy controls and RA subjects...
October 2013: Annals of the Rheumatic Diseases
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