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https://www.readbyqxmd.com/read/27898996/calcium-pyrophosphate-deposition-disease-and-associated-medical-co-morbidities-a-national-cross-sectional-study-of-us-veterans
#1
Crystal Kleiber Balderrama, Ann K Rosenthal, Daniel Lans, Jasvinder A Singh, Christie M Bartels
OBJECTIVE: Calcium pyrophosphate crystal deposition disease (CPDD) is a common cause of acute and chronic arthritis, yet there are few large epidemiologic studies of CPDD. We sought to characterize CPDD in the national Veterans Affairs (VA) population. METHODS: Patients with International Classification of Diseases, ninth revision (ICD-9) codes for CPDD seen at any VA medical center from 2010 through 2014 were matched by age and gender with control patients without CPDD, using data from the Department of Veterans Affairs Corporate Data Warehouse...
November 29, 2016: Arthritis Care & Research
https://www.readbyqxmd.com/read/27895169/critical-role-of-ltb4-blt1-in-il-23-induced-synovial-inflammation-and-osteoclastogenesis-via-nf-%C3%AE%C2%BAb
#2
Laura Bouchareychas, Eva M Grössinger, Mincheol Kang, Hong Qiu, Iannis E Adamopoulos
IL-23 activates the synthesis and production of leukotriene B4 (LTB4) in myeloid cells, which modulate inflammatory arthritis. In this study we investigated the role of LTB4 and its receptor LTB4R1 (BLT1) in synovial inflammation and osteoclast differentiation. Specifically, we used IL-23 in vivo gene transfer to induce arthritis in mice and showed that elevated serum LTB4 and synovial expression of 5-lipoxygenase correlated with increased disease severity by histological evaluation and paw swelling compared with GFP gene transfer controls...
November 28, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27870974/myocardial-perfusion-in-peripheral-raynaud-s-phenomenon-evaluation-using-stress-cardiovascular-magnetic-resonance
#3
Sophie Mavrogeni, Konstantinos Bratis, Loukia Koutsogeorgopoulou, Georgia Karabela, Efthymios Savropoulos, Gikas Katsifis, John Raftakis, George Markousis-Mavrogenis, Genovefa Kolovou
BACKGROUND: Peripheral Raynaud's phenomenon (RP) is either primary (PRP), without any coexisting disease or secondary (SRP), due to connective tissue diseases (CTD). We hypothesized that adenosine stress cardiovascular magnetic resonance (CMR) can assess myocardial perfusion in a population of PRP and SRP. PATIENTS-METHODS: Twenty CTDs, aged 30.6±7.5yrs., 16F/4M, including 9 systemic sclerosis (SSc), 4 systemic lupus erythematosus (SLE), 3 mixed connective tissue disease (MCTD), 2 polymyositis (PM) and 2 rheumatoid arthritis (RA), with SRP, under treatment with calcium blockers, were evaluated by stress CMR and compared with age-sex matched PRP and controls...
November 12, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27867381/a-critical-reappraisal-of-neutrophil-extracellular-traps-and-netosis-mimics-based-on-differential-requirements-for-protein-citrullination
#4
Maximilian F Konig, Felipe Andrade
NETosis, an antimicrobial form of neutrophil cell death, is considered a primary source of citrullinated autoantigens in rheumatoid arthritis (RA) and immunogenic DNA in systemic lupus erythematosus (SLE). Activation of the citrullinating enzyme peptidylarginine deiminase type 4 (PAD4) is believed to be essential for neutrophil extracellular trap (NET) formation and NETosis. PAD4 is therefore viewed as a promising therapeutic target to inhibit the formation of NETs in both diseases. In this review, we examine the evidence for PAD4 activation during NETosis and provide experimental data to suggest that protein citrullination is not a universal feature of NETs...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27855045/-four-corner-fusion-in-patients-with-wrist-arthritis
#5
María Francisca Vázquez-Alonso, Alberto Viñas-Silva
Scapholunate advance collapse (SLAC) and Scaphoid nonunion advance collapse (SNAC), are the two most common patterns of postraumatic wrist arthritis. SLAC wrist develops after attenuation, either traumatically or atraumatically, of the scapholunate ligament. Atraumatic causes of SLAC wrist include calcium pyrophosphate dehydrate deposition disease, reumathoid arthritis, neuropathic diseases, and b2-microglobulin asociated amyloid deposition diseases. On the other hand, SNAC wrist develops following a scahpoid fracture that has progressed to a nonunion...
2016: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/27837341/crystal-identification-of-synovial-fluid-aspiration-by-polarized-light-microscopy-an-online-test-suggesting-that-our-traditional-rheumatologic-competence-needs-renewed-attention-and-training
#6
D Berendsen, T Neogi, W J Taylor, N Dalbeth, T L Jansen
Testing a reading exercise for identification of several typical crystal such as the negatively birefringent needle-shaped crystals that are under polarized light microscopy is the gold standard for diagnosing gout. The objective of this study was to assess current performance of crystal identification by professionals involved in examining synovial fluid in routine care. Rheumatologists, trainees, lab technicians, and other physicians with an interest in crystal arthritis completed an online test. The test consisted of 30 images: 8 monosodium urate (MSU) crystals, 5 calcium pyrophosphate (CPP), 4 cholesterol, 2 depot methylprednisolone, 2 calcium oxalate, 2 rice bodies, 1 hydroxyapatite, 1 liquid lipid, 1 fibrin, 1 Charcot-Leyden, and 5 different artifacts...
November 11, 2016: Clinical Rheumatology
https://www.readbyqxmd.com/read/27837109/characterization-of-the-syk-dependent-t-cell-signaling-response-to-an-altered-peptide
#7
Jeoung-Eun Park, Jeffrey A Rotondo, David L Cullins, David D Brand, Ae-Kyung Yi, John M Stuart, Andrew H Kang, Linda K Myers
Rheumatoid arthritis is an autoimmune disorder characterized by T cell dysregulation. We have shown that an altered peptide ligand (A9) activates T cells to use an alternate signaling pathway that is dependent on FcRγ and spleen tyrosine kinase, resulting in downregulation of inflammation. In the experiments described in this study, we have attempted to determine the molecular basis of this paradox. Three major Src family kinases found in T cells (Lck, Fyn, and Lyn) were tested for activation following stimulation by A9/I-A(q) Unexpectedly we found they are not required for T cell functions induced by A9/I-A(q), nor are they required for APL stimulation of cytokines...
December 15, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27834119/correlation-of-periodontal-disease-with-inflammatory-arthritis-in-the-time-before-modern-medical-intervention
#8
Bruce Rothschild
BACKGROUND: Controversy exists as to possible correlation of periodontal disease with rheumatoid arthritis and ankylosing spondylitis. Confounding factors may relate to stringency of inflammatory disease diagnosis and to effect on periodontal disease of therapeutic intervention for rheumatoid arthritis. These were investigated. METHODS: Forty-five individuals with documented rheumatoid arthritis, spondyloarthropathy and calcium pyrophosphate deposition disease were examined from the Hamann-Todd collection of human skeletons compiled between 1912 and 1938, in addition to fifteen individuals contemporarily incorporated in the collection were examined for tooth loss, cavity occurrence, average and maximum lingual and buccal depth of the space between tooth and bone, periosteal reaction, serpentine bone resorption, abscess formation and root penetration of bone surface and analyzed by analysis of variance (ANOVA)...
November 11, 2016: Journal of Periodontology
https://www.readbyqxmd.com/read/27832822/sarcoidosis-presenting-as-granulomatous-myositis-in-a-16-year-old-adolescent
#9
Amir B Orandi, Eric Eutsler, Cole Ferguson, Andrew J White, Maleewan Kitcharoensakkul
BACKGROUND: Sarcoidosis is a multi-system disease characterized by the presence of non-caseating epithelioid granulomas in affected tissues, including skeletal muscle. These organized collections of immune cells have important pathophysiologic action including cytokine production leading to inflammation as well as enzymatic conversion of cholecalciferol to calcitriol via 1-α hydroxylase. There are limited reports of isolated granulomatous myositis causing hypercalcemia in pediatric patients...
November 10, 2016: Pediatric Rheumatology Online Journal
https://www.readbyqxmd.com/read/27824546/citrullination-in-rheumatoid-arthritis-a-process-promoted-by-neutrophil-lysis
#10
REVIEW
Tal Gazitt, Christian Lood, Keith B Elkon
Anti-citrullinated protein antibodies (ACPAs) are highly specific serologic markers for rheumatoid arthritis (RA) and can pre-date clinical disease onset by up to 10 years, also predicting erosive disease. The process of citrullination, the post-translational conversion of arginine to citrulline residues, is mediated by peptidylarginine deiminase (PAD) enzymes present in polymorphonuclear cells (PMNs). Calcium ions (Ca(2+)) are required for PAD activation, but the intracellular Ca(2+) concentration in normal cells is much lower than the optimal Ca(2+) concentration needed for PAD activation...
October 31, 2016: Rambam Maimonides Medical Journal
https://www.readbyqxmd.com/read/27804000/novel-sila-amide-derivatives-of-n-acetylcysteine-protects-platelets-from-oxidative-stress-induced-apoptosis
#11
Manoj Paul, Ram M Thushara, Swamy Jagadish, Uzma I Zakai, Robert West, Kempaiah Kemparaju, Kesturu S Girish
Oxidative stress-induced platelet apoptosis is one among the many causes for the development and progression of many disorders like cardiovascular diseases, arthritis, Alzheimer's disease and many chronic inflammatory responses. Many studies have demonstrated the less optimal effect of N-acetyl cysteine (NAC) in oxidative stress-induced cellular damage. This could be due to its less lipophilicity which makes it difficult to enter the cellular membrane. Therefore in the present study, lipophilic sila-amide derivatives (6a and 6b) synthesized through the reaction of NAC with 3-Aminopropyltrimethylsilane and aminomethyltrimethylsilane were used to determine their protective property against oxidative stress-induced platelet apoptosis...
November 1, 2016: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/27803833/coexistent-pseudogout-and-mycobacterium-avium-intracellulare-septic-arthritis-in-a-patient-with-hiv-and-esrd
#12
Wais Afzal, Omer M Wali, Kelly L Cervellione, Bhupinder B Singh, Farshad Bagheri
Pseudogout is a crystal-induced arthropathy characterized by the deposition of calcium pyrophosphate dihydrate (CPPD) crystals in synovial fluid, menisci, or articular cartilage. Although not very common, this entity can be seen in patients with chronic kidney disease (CKD). Septic arthritis due to Mycobacterium avium-intracellulare (MAI) is a rare entity that can affect immunocompromised patients such as those with acquired immunodeficiency syndrome (AIDS) or those who are on immunosuppressive drugs. Here, we describe a 51-year-old female who presented with fever, right knee pain, swelling, warmth, and decreased range of motion for several days...
2016: Case Reports in Rheumatology
https://www.readbyqxmd.com/read/27789216/artesunate-suppresses-rankl-induced-osteoclastogenesis-through-inhibition-of-plc%C3%AE-1-ca-2-nfatc1-signaling-pathway-and-prevents-ovariectomy-induced-bone-loss
#13
Xiangzhou Zeng, Yueyang Zhang, Song Wang, Keng Wang, Lei Tao, Min Zou, Nana Chen, Jiake Xu, Shuwen Liu, Xiaojuan Li
Bone lytic diseases including osteoporosis, rheumatoid arthritis, and bone metastatic tumors affect hundreds of millions people worldwide. Targeting over-activated osteoclasts as an anti-resorptive treatment becomes an important strategy to treat osteolytic diseases. Artesunate is a compound derived from artemisinin (qinghaosu) and has been used to treat malaria and rheumatoid arthritis clinically in China, but its role in osteolysis is unknown. Here, we found that artesunate could suppress RANKL-induced osteoclastogenesis and bone resorption from 1...
October 24, 2016: Biochemical Pharmacology
https://www.readbyqxmd.com/read/27785943/a-chinese-herbal-decoction-shaoyao-gancao-tang-exerts-analgesic-effect-by-down-regulating-the-trpv1-channel-in-a-rat-model-of-arthritic-pain
#14
Feng Sui, Hai-Yu Zhou, Jing Meng, Xin-Liang Du, Yun-Peng Sui, Zhi-Kun Zhou, Cheng Dong, Zhu-Ju Wang, Wei-Hao Wang, Li Dai, Hai Ma, Hai-Ru Huo, Ting-Liang Jiang
Shaoyao-Gancao Tang (SGT) is one of the most frequently used compound formulas in the treatment of pain-related diseases in the medical practice of traditional Chinese medicine (TCM). To investigate the anti-inflammatory and antinociceptive effects, as well as to uncover the molecular mechanism of SGT, the rat pain model of arthritis was experimentally induced by single unilateral injection of rats' left hind paw with Freund's complete adjuvant (FCA). SGT was orally administered to the rats daily at three doses individually for a period of 16 days post-model induction...
October 27, 2016: American Journal of Chinese Medicine
https://www.readbyqxmd.com/read/27783864/modulation-of-systemic-metabolism-by-mmp-2-from-mmp-2-deficiency-in-mice-to-mmp-2-deficiency-in-patients
#15
Carlos Fernandez-Patron, Zamaneh Kassiri, Dickson Leung
Matrix metalloproteinase-2 (MMP-2) is a 72-kDa zinc- and calcium-dependent endopeptidase with intracellular and extracellular functions ranging from the modulation of extracellular matrix remodeling to cell growth and migration, angiogenesis, inflammation, and metabolism. An upregulation of MMP-2 activity has the potential to deregulate lipid metabolism through the cleavage of numerous metabolic mediators including plasma lipoproteins and cell surface receptors of lipoproteins. Paradoxically, MMP-2 deficiency induces inflammation and deregulates metabolism...
September 15, 2016: Comprehensive Physiology
https://www.readbyqxmd.com/read/27771918/cinnamon-and-chronic-diseases
#16
Mitra Hariri, Reza Ghiasvand
Cinnamon (Cinnamomum zeylanicum and Cinnamon cassia), the eternal tree of tropical medicine, belongs to the Lauraceae family and is one of the most important spices used daily by people all over the world. It contains a lot of manganese, iron, dietary fiber, and calcium. Cinnamon contains derivatives, such as cinnamaldehyde, cinnamic acid, cinnamate, and numerous other components such as polyphenols and antioxidant, anti-inflammatory, antidiabetic, antimicrobial, anticancer effects. Several reports have dealt with the numerous properties of cinnamon in the forms of bark, essential oils, bark powder, and phenolic compounds, and each of these properties can play a key role in human health...
2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27738838/elevated-levels-of-serum-mrp8-14-in-ankylosing-spondylitis-associated-with-peripheral-arthritis-and-active-disease
#17
Latika Gupta, Shruti Bhattacharya, Vikas Agarwal, Amita Aggarwal
Monocytes of patients with ankylosing spondylitis (AS) have toll-like receptor 4 (TLR4) overexpression on their monocytes. Myeloid-related protein (MRP) 8/14 protein complexes are calcium-binding proteins, which act as endogenous ligands to TLR4. Thus, we studied the levels of MRP8/14 in adult AS patients. MRP8/14 levels were assessed in 99 adult AS patients satisfying Assessments in Ankylosing Spondylitis International Society 2010 criteria and 71 healthy controls by ELISA. Patient disease parameters like patient and physician global assessment, Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), swollen and tender joint count, entheseal count by Maastricht enthesitis index, erythrocyte sedimentation rate (ESR), and C-reactive protein (CRP) were also recorded...
October 13, 2016: Clinical Rheumatology
https://www.readbyqxmd.com/read/27708970/potential-protein-targets-of-the-peptidylarginine-deiminase-2-and-peptidylarginine-deiminase-4-enzymes-in-rheumatoid-synovial-tissue-and-its-possible-meaning
#18
Martha Adriana Badillo-Soto, Mayra Rodríguez-Rodríguez, María Elena Pérez-Pérez, Leonel Daza-Benitez, Juan José Bollain-Y-Goytia, Miguel Angel Carrillo-Jiménez, Esperanza Avalos-Díaz, Rafael Herrera-Esparza
OBJECTIVE: The molecular mechanism of citrullination involves the calcium-dependent peptidylarginine deiminase (PAD) family of enzymes. These enzymes induce a stereochemical modification of normal proteins and transform them into autoantigens, which in rheumatoid arthritis trigger a complex cascade of joint inflammatory events followed by chronic synovitis, pannus formation, and finally, cartilage destruction. By hypothesizing that PAD2 and PAD4 enzymes produce autoantigens, we investigated five possible synovial protein targets of PAD enzymes...
June 2016: European Journal of Rheumatology
https://www.readbyqxmd.com/read/27703966/marked-qtc-prolongation-and-torsades-de-pointes-in-patients-with-chronic-inflammatory-arthritis
#19
Pietro Enea Lazzerini, Pier Leopoldo Capecchi, Iacopo Bertolozzi, Gabriella Morozzi, Sauro Lorenzini, Antonella Simpatico, Enrico Selvi, Maria Romana Bacarelli, Maurizio Acampa, Deana Lazaro, Nabil El-Sherif, Mohamed Boutjdir, Franco Laghi-Pasini
Mounting evidence indicates that in chronic inflammatory arthritis (CIA), QTc prolongation is frequent and correlates with systemic inflammatory activation. Notably, basic studies demonstrated that inflammatory cytokines induce profound changes in potassium and calcium channels resulting in a prolonging effect on cardiomyocyte action potential duration, thus on the QT interval on the electrocardiogram. Moreover, it has been demonstrated that in rheumatoid arthritis (RA) patients, the risk of sudden cardiac death is significantly increased when compared to non-RA subjects...
2016: Frontiers in Cardiovascular Medicine
https://www.readbyqxmd.com/read/27696777/association-of-anti-citrullinated-peptide-antibodies-with-coronary-artery-calcification-in-rheumatoid-arthritis
#20
Laura Geraldino-Pardilla, Jon T Giles, Jeremy Sokolove, Afshin Zartoshti, William H Robinson, Matthew Budoff, Robert Detrano, Sabahat Bokhari, Joan M Bathon
OBJECTIVE: Citrullinated proteins have been found within atherosclerotic plaque. However, to date studies evaluating the association between anti-citrullinated peptide antibodies (ACPAs) and imaging measures of atherosclerosis in patients with rheumatoid arthritis (RA) have been limited to citrullinated-fibrinogen or citrullinated-vimentin seroreactivities and rendered contradictory results. Therefore, our objective was to evaluate this association using an extended panel of ACPAs in a larger sample of RA patients without clinical cardiovascular disease (CVD)...
October 1, 2016: Arthritis Care & Research
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