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Crystal induced arthritis

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https://www.readbyqxmd.com/read/29655702/4-2-4-chlorophenyl-1-4-chlorophenyl-amino-ethyl-benzene-1-3-diol-is-a-potential-agent-for-gout-therapy-as-a-dual-inhibitor-of-xod-and-nlrp3
#1
Mengze Zhou, Suning Li, Ling Song, Qinghua Hu, Wentao Liu
BACKGOUND: Gout is an inflammatory arthritis characterized by abrupt self-limiting attacks of inflammation caused by precipitation of monosodium urate crystals (MSU) in the joint. Both anti-hyperuricemia and anti-inflammation could be gout therapeutic strategies, whereas ideal drugs for gout treatment are deficient. PURPOSE: 4-(2-(4-chlorophenyl)-1-((4-chlorophenyl)amino)ethyl)benzene-1, 3-diol (CBED) was obtained from a cluster of deoxybenzoins derivatives synthesized by our research group with potent anti-hyperuricemic and anti-inflammatory activities, which was expected to be a dual inhibitor of xanthine oxidase (XOD) and NOD-like receptor protein 3 (NLRP3)...
March 15, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29595284/-treat-to-target-in-gouty-arthritis
#2
Karel Pavelka
Gout is a crystal-induced, metabolically determined inflammatory rheumatic disease with increasing prevalence. In clinical practice, gout causes frequent diagnostic as well as therapeutic problems. The golden diagnostic standard is crystalographic analysis and evidence of monosodium urate crystals in the polarization microscope; if this is not available, the diagnosis can be established through a combination of clinical, laboratory and imaging techniques. The acute gouty attack must be treated by quick administration of anti-inflammatory medicines, with available alternatives being nonsteroidal antirheumatic drugs (NSA), colchicine and glucocorticoids...
2018: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/29590701/a-case-of-severe-gouty-tophi-induced-carpal-tunnel-syndrome-operative-finding-and-its-outcome
#3
Jun-Ku Lee, Ju Won Kim, Yoon Seok Kim, Bon San Koo
Gout is a disease featuring acute arthritis, joint deformity and severe pain caused through the deposition of monosodium urate crystals in and around synovial tissue 1. Tophi are stone-like deposits of monosodium urate in the soft tissues, synovial tissues, or bones adjacent to the joints. The tophi can compromise joint motion and deteriorate bony structure, finally leading to functional disability. Therefore, early treatment using uric acid lowering agents is standard practice in gout patients to prevent the formation of tophi through controlling uric acid levels...
February 2018: Handchirurgie, Mikrochirurgie, Plastische Chirurgie
https://www.readbyqxmd.com/read/29575262/structural-basis-for-tumor-necrosis-factor-blockade-with-the-therapeutic-antibody-golimumab
#4
Masatsugu Ono, Shoichiro Horita, Yumi Sato, Yayoi Nomura, So Iwata, Norimichi Nomura
Tumor necrosis factor α (TNFα) is a proinflammatory cytokine, and elevated levels of TNFα in serum are associated with various autoimmune diseases, including rheumatoid arthritis (RA), ankylosing spondylitis (AS), Crohn's disease (CD), psoriasis and systemic lupus erythaematosus. TNFα performs its pleiotropic functions by binding to two structurally distinct transmembrane receptors, TNF receptor (TNFR) 1 and TNFR2. Antibody-based therapeutic strategies that block excessive TNFα signaling have been shown to be effective in suppressing such harmful inflammatory conditions...
March 25, 2018: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/29552838/-aconitum-in-treatment-of-rheumatoid-arthritis-benefit-risk-assessment
#5
Xiao-Meng Zhang, Yong-Nan Jin, Bing Zhang, Ning Li
Rheumatoid arthritis (RA) has the characteristics of long course of disease and difficulty in treatment. The conventional therapy may easily induce adverse drug reactions or events (ADR/ADE) due to the long-time medication. Thus, it should be given special attentions to treatment benefit and medication risk of RA patients. Aconitum, a kind of toxic traditional Chinese herbs, is an important complement therapy for RA, with some controversy in clinical application. Coming straight to the practical problem of combined use of traditional Chinese medicines (TCM) and Western medicines (WM), this study conducted quantitative assessment on the benefits and risks of Aconitum using combined with WM or not, which was carried out by the method of multi-criteria decision analysis model...
January 2018: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29544526/mice-with-mir-146a-deficiency-develop-severe-gouty-arthritis-via-dysregulation-of-traf-6-irak-1-and-nalp3-inflammasome
#6
Quan-Bo Zhang, Yu-Feng Qing, Cong-Cong Yin, Li Zhou, Xian-Shuang Liu, Qing-Sheng Mi, Jing-Guo Zhou
BACKGROUND: MicroRNAs (miRNAs) serve as important regulators of inflammatory and immune responses and are implicated in several immune disorders including gouty arthritis. The expression of miR-146a is upregulated in the peripheral blood mononuclear cells of patients with inter-critical gout when compared to normouricemic and hyperuricemic controls and those patients with acute gout flares. However, the role of miR-146a in the development of gout remains unknown. Here, we used miR-146a knockout (KO) mice to test miR-146a function in a monosodium urate (MSU)-induced gouty arthritis model...
March 15, 2018: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/29524120/a-beacon-in-the-dark-canakinumab-a-new-therapeutic-perspective-in-chronic-tophaceous-gout
#7
Daniela Marotto, Antonella De Santis, Donatella Chessa, Davide Firinu, Stefano Del Giacco
Gout is the most common form of arthritis in adults. It is often associated with other comorbidities, which contraindicate the use of conventional therapies. The discovery of the role of interleukin-1β (IL-1β) in orchestrating the monosodium urate crystal-induced inflammatory response offered new therapeutic prospects to refractory patients, or to those in whom standard therapies are contraindicated. This paper describes a clinical case of a 65-year-old man with chronic tophaceous gouty arthropathy and subintrant flares, who had comorbidities contraindicating the use of conventional gout therapies-to which he did not respond-who was treated with canakinumab, a monoclonal selective inhibitor of IL-1β...
March 9, 2018: Rheumatology and Therapy
https://www.readbyqxmd.com/read/29519319/luteolin-4-o-glucoside-and-its-aglycone-two-major-flavones-of-gnaphalium-affine-d-don-resist-hyperuricemia-and-acute-gouty-arthritis-activity-in-animal-models
#8
Yan Lin, Pei-Gang Liu, Wei-Qing Liang, Yi-Juan Hu, Pan Xu, Jie Zhou, Jin-Bao Pu, Hong-Jian Zhang
BACKGROUND: Gnaphalium affine D. Don is a folk medicine of China believed to be efficacious in the treatment of many ailments, including hyperuricemia and gout. PURPOSE: Based on a previous study, we isolated two flavones, luteolin and luteolin-4'-O-glucoside, from G. affine. Our aim was to assess the potential beneficial effects of treatment and mechanisms of these two flavones on hyperuricemia and acute gouty arthritis. METHODS: The model of potassium oxonate (PO)-induced hyperuricemia and monosodium urate (MSU) crystal-induced inflammation in mice has been established...
March 1, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29516278/calcium-containing-crystals-and-osteoarthritis-an-unhealthy-alliance
#9
REVIEW
Richard Conway, Geraldine M McCarthy
PURPOSE OF REVIEW: Osteoarthritis (OA) is the most common form of joint disease globally and is associated with significant morbidity and disability. Increasing evidence points to an important inflammatory component in the development and progression of OA. The precise pathways involved in OA inflammatory processes remain to be clarified. Basic calcium phosphate (BCP) and calcium pyrophosphate dihydrate (CPP) crystals can induce inflammation and arthritis and recent studies point to a potential pathogenic role in OA...
March 8, 2018: Current Rheumatology Reports
https://www.readbyqxmd.com/read/29482609/microrna-302b-negatively-regulates-il-1%C3%AE-production-in-response-to-msu-crystals-by-targeting-irak4-and-epha2
#10
Teng Ma, Xiao Liu, Zhifu Cen, Chuan Xin, Mingfeng Guo, Chaoyu Zou, Wenpeng Song, Rou Xie, Kailun Wang, Hong Zhou, Jun Zhang, Zhen Wang, Ce Bian, Kaijun Cui, Jiong Li, Yu-Quan Wei, Jing Li, Xikun Zhou
BACKGROUND: Interleukin-1β (IL-1β) is a pivotal proinflammatory cytokine that is strongly associated with the inflammation of gout. However, the underlying mechanism through which the production of IL-1β is regulated has not been fully elucidated. Our previous work identified that miR-302b had an important immune regulatory role in bacterial lung infections. This study was conducted to evaluate the function of miR-302b on monosodium urate (MSU) crystal-induced inflammation and its mechanism...
February 26, 2018: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/29475408/identification-of-selective-mmp-9-inhibitors-through-multiple-e-pharmacophore-ligand-based-pharmacophore-molecular-docking-and-density-functional-theory-approaches
#11
Srabanti Jana, Sushil K Singh
Matrix metalloproteinase-9 (MMP-9) is a significant target for the development of drugs for the treatment of arthritis, CNS disorders, and cancer metastasis. The structure-based and ligand-based methods were used for the virtual screening (VS) of database compounds to obtain potent and selective MMP-9 inhibitors. Experimentally known MMP-9 inhibitors were used to grow up ligand-based three pharmacophore models utilizing Schrodinger suite. The X-ray crystallographic structures of MMP-9 with different inhibitors were used to develop five energy-optimized structure-based (e-pharmacophore) models...
February 23, 2018: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/29456508/the-molecular-determinants-of-small-molecule-ligand-binding-at-p2x-receptors
#12
Gaia Pasqualetto, Andrea Brancale, Mark T Young
P2X receptors are trimeric eukaryotic ATP-gated cation channels. Extracellular ATP-their physiological ligand-is released as a neurotransmitter and in conditions of cell damage such as inflammation, and substantial evidence implicates P2X receptors in diseases including neuropathic pain, cancer, and arthritis. In 2009, the first P2X crystal structure, Danio rerio P2X4 in the apo - state, was published, and this was followed in 2012 by the ATP-bound structure. These structures transformed our understanding of the conformational changes induced by ATP binding and the mechanism of ligand specificity, and enabled homology modeling of mammalian P2X receptors for ligand docking and rational design of receptor modulators...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29398463/coexistence-of-septic-and-crystal-induced-arthritis-a-diagnostic-challenge-a-report-of-25-cases
#13
Águeda Prior-Español, Yaiza García-Mira, Sonia Mínguez, Melania Martínez-Morillo, Laia Gifre, Lourdes Mateo
OBJECTIVE: Septic arthritis is a medical emergency and crystal-induced arthritis is a risk factor for its development. If both occur simultaneously, crystal-induced arthritis may mask the diagnosis of infection and delay antibiotic therapy. METHOD: Retrospective analysis of patients with coexistence of septic and crystal-induced arthritis. We included only patients with isolation of crystals in synovial fluid analysis and positive culture of synovial fluid and/or blood culture...
February 1, 2018: Reumatología Clinica
https://www.readbyqxmd.com/read/29348072/structure-based-development-of-an-osteoprotegerin-like-glycopeptide-that-blocks-rankl-rank-interactions-and-reduces-ovariectomy-induced-bone-loss-in-mice
#14
Chao Liu, Xiao Chen, Xin Zhi, Weizong Weng, Quan Li, Xiang Li, Yan Zou, Jiacan Su, Hong-Gang Hu
Osteoporosis is a metabolic bone disease characterized by low bone mass and micro-architectural deterioration of bone, for which the underlying mechanism is an imbalance between bone resorption and bone remodeling. The protein-protein interactions between receptor activator of nuclear factor-κB ligand (RANKL), RANK (its receptor), and osteoprotegerin (OPG), are known to mediate the development and activation of osteoclasts in bone remodeling, and are regarded as a pivotal therapeutic target for the treatment of osteoporosis...
February 10, 2018: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29319609/joint-nociceptor-nerve-activity-and-pain-in-an-animal-model-of-acute-gout-and-its-modulation-by-intra-articular-hyaluronan
#15
Aida Marcotti, Ana Miralles, Eduardo Dominguez, Eliseo Pascual, Ana Gomis, Carlos Belmonte, Elvira de la Peña
The mechanisms whereby deposition of monosodium urate (MSU) crystals in gout activates nociceptors to induce joint pain are incompletely understood. We tried to reproduce the signs of painful gouty arthritis, injecting into the knee joint of rats suspensions containing amorphous or triclinic, needle MSU crystals. The magnitude of MSU-induced inflammation and pain behavior signs were correlated with the changes in firing frequency of spontaneous and movement-evoked nerve impulse activity recorded in single knee joint nociceptor saphenous nerve fibers...
April 2018: Pain
https://www.readbyqxmd.com/read/29305995/acute-septic-arthritis-of-the-knee-a-rare-case-report-of-infection-with-parvimonas-micra-after-an-intra-articular-corticosteroid-injection-for-osteoarthritis
#16
Assem A Sultan, William A Cantrell, Anton Khlopas, Connor Cole, Nicolas S Piuzzi, Nipun Sodhi, Peter Brooks, Michael A Mont
Acute bacterial mono-articular septic arthritis affects most commonly the lower extremity joints in adult population and most commonly caused by Staphylococcus aureus. Various risk factors determine susceptibility to infection including host immunity, medical co-morbidity and joint structural abnormality and other organisms may be involved. Parvimonas micra (P. micra) is among the rare organisms that may be associated with atypical septic arthritis and primarily affects the native knee joint. Only 3 case reports in the literature have reported on pyogenic pyogenic joint infection caused by this organism...
January 4, 2018: Anaerobe
https://www.readbyqxmd.com/read/29214345/an-investigation-of-the-independent-risk-factors-that-differentiate-gout-from-pseudogout-in-patients-with-crystal-induced-acute-arthritis-a-cross-sectional-study
#17
Chayawee Muangchan, Thitirat Bhurihirun
OBJECTIVES: To identify independent risk factors that differentiate gout from pseudogout in patients that present with crystal-induced acute arthritis. METHODS: This cross-sectional study was conducted at Siriraj Hospital (Bangkok, Thailand) during the 25 May 2014-28 November 2014 study period. Patients who presented with crystal-induced acute arthritis were eligible for inclusion. Diagnosis of gout or pseudogout was made by microscopic visualization and analysis of crystals in synovial fluid...
January 2018: Rheumatology International
https://www.readbyqxmd.com/read/29203546/use-of-proteins-identified-through-a-functional-genomic-screen-to-develop-a-protein-subunit-vaccine-that-provides-significant-protection-against-virulent-streptococcus-suis-in-pigs
#18
Susan L Brockmeier, Crystal L Loving, Tracy L Nicholson, Jinhong Wang, Sarah E Peters, Lucy Weinert, Roy Chaudhuri, David J Seilly, Paul R Langford, Andrew Rycroft, Brendan W Wren, Duncan J Maskell, Alexander W Tucker
Streptococcus suis is a bacterium that is commonly carried in the respiratory tract and that is also one of the most important invasive pathogens of swine, commonly causing meningitis, arthritis, and septicemia. Due to the existence of many serotypes and a wide range of immune evasion capabilities, efficacious vaccines are not readily available. The selection of S. suis protein candidates for inclusion in a vaccine was accomplished by identifying fitness genes through a functional genomics screen and selecting conserved predicted surface-associated proteins...
March 2018: Infection and Immunity
https://www.readbyqxmd.com/read/29174375/actinidia-arguta-extract-attenuates-inflammasome-activation-potential-involvement-in-nlrp3-ubiquitination
#19
Kang-Hyuck Heo, Xiao Sun, Do-Wan Shim, Myong-Ki Kim, Sushruta Koppula, Sang-Hyeun Yu, Han-Bi Kim, Tack-Joong Kim, Tae-Bong Kang, Kwang-Ho Lee
ETHNOPHARMACOLOGICAL RELEVANCE: Actinidia arguta (A. arguta) has been widely used in Asian countries as a traditional medicinal herb to treat inflammation-related diseases, such as gastritis, bronchitis, and arthritis. AIM OF THE STUDY: The inhibitory effect of A. arguta leaves' extract (AA) on inflammasome activation was investigated to verify its traditional use in treating inflammation-related diseases. MATERIALS AND METHODS: Bone marrow-derived macrophages (BMDMs) primed by lipopolysaccharide (LPS) were activated by selective inflammasome stimulators, and the effect of AA on inflammasome activation was investigated...
March 1, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29104632/fucoidan-elevates-surface-organic-cation-transporter-2-expression-via-upregulation-of-protein-kinase-a-in-uric-acid-nephropathy
#20
Xinlin Wu, Miansheng Yan, Taoli Liu, Jiantang Liao, Jianqing Zhang, Shuqing Chen, Wei Deng, Shijun Zhang, Baoguo Sun, Houming Zhou, Bin Ke
Uric acid nephropathy (UAN) is caused by excessive uric acid, and is a key risk factor for uric acid nephrolithiasis, gouty arthritis, renal diseases and cardiovascular diseases. The present study aimed to evaluate the protective effect of fucoidan, a sulfated polysaccharide component of brown algae, on UAN and to elucidate the underlying molecular mechanism. A rat model of UAN was induced by adenine treatment, and rats were then randomly assigned to control, model or fucoidan treatment groups. Hematoxylin and eosin staining of the kidney tissues of rats with UAN was subjected to conventional morphological evaluation...
November 2017: Experimental and Therapeutic Medicine
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