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rheumatoid arthritis

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https://www.readbyqxmd.com/read/29457982/discovery-of-gdc-0853-a-potent-selective-and-non-covalent-bruton-s-tyrosine-kinase-inhibitor-in-early-clinical-development
#1
James J Crawford, Adam R Johnson, Dinah L Misner, Lisa D Belmont, Georgette M Castanedo, Regina Choy, Melis Coraggio, Liming Dong, Charles Eigenbrot, Rebecca Erickson, Nico Ghilardi, Jonathan Hau, Arna Katewa, Pawan Bir Kohli, Wendy Lee, Joseph W Lubach, Brent S McKenzie, Daniel Fred Ortwine, Leah Schutt, Suzanne Tay, Binqing Wei, Karin Reif, Lichuan Liu, Harvey Wong, Wendy B Young
Btk is a non-receptor cytoplasmic tyrosine kinase involved in B-cell and myeloid cell activation, downstream of B-cell and Fcγ receptors, respectively. Pre-clinical studies have indicated that inhibition of Btk activity might offer a potential therapy in autoimmune diseases such as rheumatoid arthritis and systemic lupus erythematosus. Here we disclose the discovery and pre-clinical characterization of a potent, selective, and non-covalent Btk inhibitor currently in clinical development. GDC-0853 (29) suppresses B cell- and myeloid cell-mediated components of disease, and demonstrates dose-dependent activity in an in vivo rat model of inflammatory arthritis...
February 19, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29457414/-clinical-research-of-popliteal-cyst-excision-combined-with-debridement-of-the-knee-under-arthroscopy-with-local-anesthesia
#2
Ji Li, Zhong-Li Li, Hao Zhang, Ke-Tao Wang, Yi-Meng Yang, Xiang-Zheng Su
OBJECTIVE: To evaluate the clinical effects of popliteal cyst excision combined with debridement of the knee under arthroscopy with local anesthesia. METHODS: From February 2009 to August 2014, 52 patients with popliteal cysts were treated in our hospital, including 34 males and 18 females with an average age of 43.6 years old ranging from 14 to 62 years old; 29 cases were on the right knee and 23 on the left knee. Preoperative diagnosis was performed according to MRI findings and to determine whether other knee disorders were associated with the disease, 52 patients were diagnosed as popliteal cyst before operation; 23 cases of simple meniscus injury or cartilage injury, 18 cases of osteoarthritis, 7 cases of cruciate ligament injury, 2 cases of gouty arthritis, 1 case of rheumatoid arthritis, 1 case of pigmented villonodular arthritis...
October 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29457404/-perioperative-and-drug-management-of-patients-with-rheumatoid-arthritis-treated-with-joint-replacement
#3
REVIEW
Jun Liu, Ping Zhen, Sheng-Hu Zhou, Qi Tian, Hui Chen, Jie Shi, Wei Wang, Xiao-le He, Xu-Sheng Li
Rheumatoid arthritis (RA) is a most common inflammatory joint disease with direct invasion of joint synovial membrane, cartilage and bone. Currently, although the RA mitigation drugs are being improved continously, but these drugs only can delay the development of joint dysfunction. Total hip arthroplasty or total knee arthroplasty(THA or TKA) has become the only choices for patients with advanced RA, and the joint function and deformity of the patients after surgical treatment can be improved to some extent...
November 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29456830/hypoxia-induced-the-upregulation-of-stromal-cell-derived-factor-1-in-fibroblast-like-synoviocytes-contributes-to-migration-of-monocytes-into-synovium-tissue-in-rheumatoid-arthritis
#4
Ru Yang, Yanhua Yao, Panjun Wang
Background: Rheumatoid arthritis (RA) is an auto-immune disease characterized by chronic inflammation of multiple joints. Hypoxia is a constant feature of synovial microenvironment in RA. Fibroblast-like synoviocytes (FLSs), which are potent effector cells in RA. It has been reported that large numbers of monocytes are recruited to the synovium and play an important role in synovial inflammation and tissue destruction in RA. However, the mechanism is still unclear. The aim of this study is to explore the role of hypoxia microenvironment on the recruitment of monocytes and then promote the development of RA...
2018: Cell & Bioscience
https://www.readbyqxmd.com/read/29456809/hypericin-photodynamic-therapy-inhibits-proliferation-and-induces-apoptosis-in-human-rheumatoid-arthritis-fibroblast-like-synoviocytes-cell-line-mh7a
#5
Kun Zhang, Shan Gao, JiaYi Guo, GuoHua Ni, Zhe Chen, Feng Li, XiaoLei Zhu, YongBing Wen, YanXing Guo
Objectives: To elucidate the effects and potential mechanisms of hypericin-photodynamic therapy (HYP-PDT) for treating the human rheumatoid arthritis (RA) fibroblast-like synoviocyte (FLS) MH7A cell-line. Materials and Methods: MH7A cells were subjected to HYP-PDT intervention and apoptosis was evaluated via MTT, nuclear staining, and flowcytometry analyses. Intracellular reactive oxygen species (ROS) were measured with the fluorescent probe 2'7'-dichlorofluorescein diacetate (DCFH-DA)...
February 2018: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29456634/limethason-reduces-airway-inflammation-in-a-murine-model-of-ovalbumin-induced-chronic-asthma-without-causing-side-effects
#6
Siyu Li, Zhiping Miao, Ye Tian, Haoyu Wang, Shuai Wang, Tianyuan He, Yue Yang, Peng Wang, Mengyao Ma, Tuanmin Yang, Tao Chen, Zhiyong Liu, Junhong Gao, Chu Chen, Airong Qian
Airway inflammation is the major pathological feature of asthma. Thus, the current therapeutic strategy for asthma is to control inflammation. Limethason, an anti-inflammation drug, is widely used in rheumatoid arthritis treatment. The aim of the present study was to detect the anti-inflammatory effect and side effects of limethason on airways that were sensitized with ovalbumin in a murine model of chronic asthma. In the present study, BALB/c mice were sensitized with ovalbumin. Airway hyperresponsiveness was estimated, and hematoxylin and eosin staining, Periodic acid-Schiff staining and bronchoalveolar lavage were used to detect the effect on chronic asthma...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29456394/assessment-of-vitamin-d-in-rheumatoid-arthritis-and-its-correlation-with-disease-activity
#7
Narendra Meena, Sumit Pal Singh Chawla, Ravinder Garg, Anil Batta, Sarabjot Kaur
Background: Vitamin D is believed to have an immunomodulatory and anti-inflammatory action, and its deficiency has been linked with several autoimmune disorders, including rheumatoid arthritis (RA). The relationship between the severity of RA and serum levels of Vitamin D is a subject of immense interest and therapeutic implications. Materials and Methods: This was a prospective, comparative study conducted on 100 participants, 50 cases of RA and 50 healthy controls, all in the age group of 18-75 years...
January 2018: Journal of Natural Science, Biology, and Medicine
https://www.readbyqxmd.com/read/29455266/inflammatory-tenosynovitis-and-enthesitis-induced-by-immune-checkpoint-inhibitor-treatment
#8
Jun Inamo, Yuko Kaneko, Tsutomu Takeuchi
Reports about immune-related adverse events (IrAEs) induced by immune checkpoint inhibitors (ICIs) have been increasing. Although the importance of understanding joint involvement and myalgia as an IrAE has grown, little is known about its characteristics. The aim of this study was to investigate the incidence and clinical characteristics of articular IrAEs. We reviewed 133 patients who were treated with ICIs in our institution and referred to our rheumatologic. Among them, 2 (1.5%) developed arthritis during the use of anti-PD-1 inhibitor, and there was one patient with joint pain after anti-PD-L1 inhibitor who was referred to our department from another institution...
February 17, 2018: Clinical Rheumatology
https://www.readbyqxmd.com/read/29455258/effects-of-capsaicin-on-ovarian-granulosa-cell-proliferation-and-apoptosis
#9
Sabire Güler, Berrin Zik
Capsaicin is the pungent ingredient in red peppers. Due to the effects on the sensory nerve fibers, capsaicin has been used to treat pain and inflammation associated with a variety of diseases including rheumatoid arthritis and diabetic neuropathy, obesity, and cardiovascular and gastrointestinal conditions. Despite the extensive publications on different systems, the studies of the effects on the ovary are very limited. The present study was conducted to examine the possible proliferative and/or apoptotic effects of various doses of capsaicin on primarily derived granulosa cells...
February 17, 2018: Cell and Tissue Research
https://www.readbyqxmd.com/read/29455165/community-deliverable-exercise-and-anxiety-in-adults-with-arthritis-and-other-rheumatic-diseases-a-systematic-review-with-meta-analysis-of-randomised-controlled-trials
#10
George A Kelley, Kristi S Kelley, Leigh F Callahan
BACKGROUND/PURPOSE: Given conflicting findings, the purpose of this study was to use the meta-analytic approach to examine the effects of exercise (aerobic, strength training or both) on anxiety in adults with arthritis and other rheumatic diseases (AORD). METHODS: Randomised controlled exercise intervention trials ≥4weeks in adults ≥18 years of age with osteoarthritis, rheumatoid arthritis or fibromyalgia were included. Studies were located by searching eight electronic databases, cross-referencing and expert review...
February 17, 2018: BMJ Open
https://www.readbyqxmd.com/read/29454690/hyperimmune-colostrum-alleviates-rheumatoid-arthritis-in-a-collagen-induced-arthritis-murine-model
#11
Lan-Hsin Hung, Chi-Heng Wu, Bi-Fong Lin, Lucy Sun Hwang
Our aging population and the accompanying decline in immune function is a growing concern that may be addressed by finding natural methods to enhance the immunocompetence of our elderly. Bovine milk and colostrum from cows that have been immunized have been shown to provide additional immunoglobulins and other bioactive molecules that enhance immune function. The purpose of this study was to investigate the ability of hyperimmune bovine colostrum to alleviate the symptoms of rheumatoid arthritis in a murine model...
February 14, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29454012/immunologic-effects-of-chronic-administration-of-tofacitinib-a-janus-kinase-inhibitor-in-cynomolgus-monkeys-and-rats-comparison-of-juvenile-and-adult-responses
#12
Mark Collinge, Douglas J Ball, Christopher J Bowman, Andrea L Nilson, Zaher A Radi, W Mark Vogel
Tofacitinib, an oral Janus kinase (JAK) inhibitor for treatment of rheumatoid arthritis, targets JAK1, JAK3, and to a lesser extent JAK2 and TYK2. JAK1/3 inhibition impairs gamma common chain cytokine receptor signaling, important in lymphocyte development, homeostasis and function. Adult and juvenile cynomolgus monkey and rat studies were conducted and the impact of tofacitinib on immune parameters (lymphoid tissues and lymphocyte subsets) and function (T-dependent antibody response (TDAR), mitogen-induced T cell proliferation) assessed...
February 14, 2018: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/29453823/paeoniflorin-ameliorates-collagen-induced-arthritis-via-suppressing-nf-%C3%AE%C2%BAb-signaling-pathway-in-osteoclast-differentiation
#13
Haiyan Xu, Li Cai, Lili Zhang, Guojue Wang, Rongli Xie, Yongshuai Jiang, Yuanyang Yuan, Hong Nie
Paeoniflorin (PF), extracted from the root of Paeonia lactiflora Pall, exhibits anti-inflammation properties in several autoimmune diseases. Osteoclast, the only somatic cell with bone resorbing capacity, was the direct cause of bone destruction in rheumatoid arthritis (RA) and its mouse model, such as collagen induced arthritis(CIA). The objective of this study is to estimate the effect of PF on CIA mice, and explore the mechanism of PF on bone destruction. We demonstrated that PF treatment significantly ameliorated CIA via inflammatory response inhibition and bone destruction suppression...
February 17, 2018: Immunology
https://www.readbyqxmd.com/read/29453198/targeting-kca1-1-channels-with-a-scorpion-venom-peptide-for-the-therapy-of-rat-models-of-rheumatoid-arthritis
#14
Mark R Tanner, Michael W Pennington, Brayden H Chamberlain, Redwan Huq, Elizabeth J Gehrmann, Teresina Laragione, Percio S Gulko, Christine Beeton
Fibroblast-like synoviocytes (FLS) are a key cell-type involved in rheumatoid arthritis (RA) progression. We previously identified the KCa1.1 potassium channel (Maxi-K, BK, Slo 1, KCNMA1) as a regulator of FLS and that KCa1.1 inhibition reduces disease severity in RA animal models. However, systemic KCa1.1 block causes multiple side effects and in this study, we aimed to determine whether the KCa1.1 β1-3-specific venom peptide blocker iberiotoxin (IbTX) reduces disease severity in animal models of RA without inducing major side effects...
February 16, 2018: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29453041/microrna-signature-of-regulatory-t-cells-in-health-and-autoimmunity
#15
REVIEW
Mehdi Soltanzadeh-Yamchi, Mehdi Shahbazi, Saeed Aslani, Mousa Mohammadnia-Afrouzi
MicroRNAs (miRNAs) are small RNA molecules with regulatory functions on the expression of genes through binding directly to target messenger RNA (mRNA) transcripts, eventuating in gene expression suppression via translational hindrance and/or target mRNA cleavage. These molecules have been established to participate in numerous critical cellular settings, including differentiation, development, and function of immune cells. As an important suppressor cell of immune system, regulatory T cells (Tregs) are important in modulating the immune homeostasis as well as tolerance to self-antigens...
February 13, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29452912/copd-an-overlooked-cause-of-excess-mortality-in-patients-with-rheumatoid-arthritis
#16
Charlotte Hyldgaard, Torkell Ellingsen, Elisabeth Bendstrup
No abstract text is available yet for this article.
February 13, 2018: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/29452839/development-of-selective-inhibitors-for-the-treatment-of-rheumatoid-arthritis-r-3-3-methyl-7h-pyrrolo-2-3-d-pyrimidin-4-yl-amino-pyrrolidin-1-yl-3-oxopropanenitrile-as-a-jak1-selective-inhibitor
#17
Chieyeon Chough, Misuk Joung, Sunmin Lee, Jaemin Lee, Jong Hoon Kim, B Moon Kim
A series of 3(R)-aminopyrrolidine derivatives were designed and synthesized for JAK1-selective inhibitors through the modification of tofacitinib's core structure, (3R,4R)-3-amino-4-methylpiperidine. From the new core structures, we selected (R)-N-methyl-N-(pyrrolidin-3-yl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine as a scaffold for further SAR studies. From biochemical enzyme assays and liver microsomal stability tests, (R)-3-(3-(methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino)pyrrolidin-1-yl)-3-oxopropanenitrile (6) was chosen for further in vivo test through oral administration...
February 3, 2018: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/29452423/anti-citrullinated-alpha-enolase-antibodies-interstitial-lung-disease-and-bone-erosion-in-rheumatoid-arthritis
#18
Alessia Alunno, Onelia Bistoni, Federico Pratesi, Giuliana Maria Concetta La Paglia, Ilaria Puxeddu, Paola Migliorini, Roberto Gerli
Objectives: RA is an articular chronic inflammatory disease that in a subgroup of patients can also present with extra-articular manifestations (EAMs). Despite intense investigation on this topic, reliable biomarkers for EAMs are lacking. In recent years several ACPAs, including those targeting anti-citrullinated alpha enolase peptide-1 (anti-CEP-1), have been identified in patients with RA. Data about the ability of anti-CEP-1 to predict the development of erosive disease are confliciting and no evidence concerning their possible association with EAMs in RA is currently available...
February 14, 2018: Rheumatology
https://www.readbyqxmd.com/read/29452300/therapeutic-strategy-for-rheumatoid-arthritis-patients-who-have-achieved-remission
#19
Bruno Fautrel
Once remission or low disease activity (LDA) is attained in established rheumatoid arthritis (RA) patients, attempting disease-modifying anti-rheumatic drug (DMARD) tapering appears to be a viable option to avoid patient overtreatment. Potential benefits include reduction in the treatment burden and the risk of adverse events, although the latter has not been demonstrated convincingly.The feasibility of DMARD discontinuation has been tested in numerous studies or trials. All have revealed a high risk of relapse, ranging from 56% to 87% at one year...
February 13, 2018: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/29452286/risk-factor-analysis-of-adjacent-segment-disease-requiring-surgery-after-short-lumbar-fusion-the-influence-of-rheumatoid-arthritis
#20
Jin-Sung Park, Kyu-Dong Shim, Young-Sik Song, Ye-Soo Park
BACKGROUND CONTEXT: The influence of rheumatoid arthritis (RA) on the lumbar spine has received relatively little attention compared with cervical spine, and few studies have been conducted for adjacent segment disease (ASD) after lumbar fusion in the patients with RA. PURPOSE: To determine the incidence of ASD requiring surgery (ASDrS) after short lumbar fusion and to evaluate risk factors of ASDrS, including RA. STUDY DESIGN: Retrospective cohort study PATIENT SAMPLE: This study included 479 patients who underwent lumbar spinal fusion of 3 or fewer levels, with the mean follow-up period of 51...
February 13, 2018: Spine Journal: Official Journal of the North American Spine Society
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