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https://www.readbyqxmd.com/read/30232236/tanshinone-iia-promotes-the-apoptosis-of-fibroblast-like-synoviocytes-in-rheumatoid-arthritis-by-upregulating-lncrna-gas5
#1
Guoqing Li, Ying Liu, Fanru Meng, Zhongbin Xia, Xia Wu, Yuxuan Fang, Chunwang Zhang, Dan Liu
Rheumatoid arthritis (RA) is a common chronic autoimmune joint disease characteristic of elevated proliferation and infiltration of fibroblast-like synoviocytes (FLS). Here we aimed to explore the mechanisms of the Tanshinone IIA (Tan IIA)-induced apoptosis of FLS from patients with rheumatoid arthritis (termed RAFLS). Cell Counting kit-8 (CCK-8) assay and Annexin V staining revealed that RAFLS viability decreased and apoptosis increased after Tan IIA treatment. LncRNA GAS5 expression was significantly decreased in the synovial tissues and RAFLS while Tan IIA treatment resulted in an up-regulation of GAS5...
September 19, 2018: Bioscience Reports
https://www.readbyqxmd.com/read/30186380/hoxd10-silencing-suppresses-human-fibroblast-like-synoviocyte-migration-in-rheumatoid-arthritis-via-downregulation-of-the-p38-jnk-pathway
#2
Luan Luan, Yingying Ma, Lihua Zhang
Homeobox D10 (HOXD10) belongs to the human homeobox (HOX) gene family, and the homologous protein encoded by HOX primarily controls cell differentiation and morphogenesis during embryonic development. The current study aimed to explore the roles and mechanisms of HOXD10 in the migration of human fibroblast-like synoviocytes in rheumatoid arthritis (RAFLS). Cell counting kit-8, cell migration and wound healing assays were performed to examine the cell viability and migration, respectively. Western blot and reverse transcription-quantitative polymerase chain reaction assays were used to evaluate the association between mRNA and protein expression levels...
September 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/30184542/mir-338-5p-regulates-the-viability-proliferation-apoptosis-and-migration-of-rheumatoid-arthritis-fibroblast-like-synoviocytes-by-targeting-nfat5
#3
Ting Guo, Hao Ding, Hui Jiang, Nirong Bao, Liwu Zhou, Jianning Zhao
BACKGROUND/AIMS: MicroRNAs (miRNAs) have been reported to be involved in Rheumatoid arthritis (RA) pathogenesis and prognosis. However, little is known about the disease mechanism in RA. Here, we aim to investigate the potential association between miR-338-5p and NFAT5 in RA. METHODS: Aberrant expression of miR-338-5p in RA tissues and rheumatoid arthritis fibroblast-like synoviocytes (RAFLSs) compared to the normal were determined by RT-qPCR. Cell viability was determined using the CCK-8 assay, and cell apoptosis was analyzed via Annexin V-FITC/PI double staining and was detected using flow cytometry...
September 5, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/30112359/apoptotic-and-anti-inflammatory-effects-of-eupatorium-japonicum-thunb-in-rheumatoid-arthritis-fibroblast-like-synoviocytes
#4
Jong-Il Shin, Yong-Joon Jeon, Sol Lee, Yoon Gyeong Lee, Ji Beom Kim, Hak Cheol Kwon, Sung Hun Kim, Inki Kim, Kyungho Lee, Ye Sun Han
Rheumatoid arthritis (RA) is a chronic autoimmune inflammatory disease characterized by synovitis, hyperplasia, and the destruction of bone and cartilage. A variety of immunosuppressive biological agents have been developed because the pathogenesis of RA is related predominantly to the inflammatory response. However, rheumatoid arthritis fibroblast-like synovial cells (RAFLS), which are known to play an important role in RA progression, exhibit resistance to immunosuppressants through cancer-like properties...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29909160/-doctors-during-the-vel-d-hiv-roundup-on-july-16-and-17-1942
#5
Bruno Halioua
Seventy-five years ago, the Vel' d'Hiv Roundup (commonly called in French the "Rafle du Vel' d'Hiv"), was a Nazi decreed raid and mass arrest of Jewish in Paris by the French police on 16 and 17 July 1942. During the action, 13,152 Jews including 4115 children were captured and placed in hellish conditions in the Paris Velodrome to be delivered to the Nazi killing machine. A team of doctors and nurses of the Red Cross, assisted by Jewish doctors, ensured the medical care of the internees of the Vél'd'Hiv with unusual dedication...
July 2018: La Presse Médicale
https://www.readbyqxmd.com/read/29790294/jak-stat-blockade-alters-synovial-bioenergetics-mitochondrial-function-and-pro-inflammatory-mediators-in-rheumatoid-arthritis
#6
Trudy McGarry, Carl Orr, Sarah Wade, Monika Biniecka, Siobhan Wade, Lorna Gallagher, Candice Low, Douglas J Veale, Ursula Fearon
OBJECTIVE: To examine the effect of tofacitinib on metabolic activity, mitochondrial function and pro-inflammatory mechanisms in Rheumatoid Arthritis. METHODS: Ex-vivo RA synovial explants and primary RA synovial fibroblasts (RAFLS) were cultured with tofacitinib (1μM). RAFLS bioenergetics was assessed using the XF24-Flux-analyser, and key metabolic genes by real-time PCR. Mitochondrial function was assessed using specific cell fluorescent probes and by mitochondrial gene arrays...
May 23, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29565987/phospholipid-transfer-protein-pltp-exerts-a-direct-pro-inflammatory-effect-on-rheumatoid-arthritis-ra-fibroblasts-like-synoviocytes-fls-independently-of-its-lipid-transfer-activity
#7
Rachel Audo, Valérie Deckert, Claire I Daien, Hélène Che, Jamila Elhmioui, Stéphanie Lemaire, Jean-Paul Pais de Barros, Catherine Desrumaux, Bernard Combe, Michael Hahne, Laurent Lagrost, Jacques Morel
Rheumatoid arthritis (RA) is a chronic inflammatory rheumatic disease with modification of lipids profile and an increased risk of cardiovascular events related to inflammation. Plasma phospholipid transfer protein (PLTP) exerts a lipid transfer activity through its active form. PLTP can also bind to receptors such as ATP-binding cassette transporter A1 (ABCA1). In addition to its role in lipoprotein metabolism and atherosclerosis, the latest advances came in support of a complex role of PLTP in the regulation of the inflammatory response, both with pro-inflammatory or anti-inflammatory properties...
2018: PloS One
https://www.readbyqxmd.com/read/29509238/uca1-impacts-progress-of-rheumatoid-arthritis-by-inducing-the-apoptosis-of-fibroblast-like-synoviocyte
#8
Z-F Yan, X-Y Zhao, W Liu, X-P Liu
OBJECTIVE: Rheumatoid arthritis is a chronic autoimmune joint disease, which is characterized by the proliferation of fibroblast-like synoviocyte. Long non-coding RNA (lncRNA) has been reported to play an important role in the progression of many different diseases. The main objective of this research was to find out whether the lncRNAs influence the activity of fibroblast-like synoviocyte and the progression of this disease. PATIENTS AND METHODS: qRT-PCR was used to detect the expression of UCA1 in fibroblast-like synoviocyte from normal people and rheumatoid arthritis patients...
February 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29442025/sinomenine-inhibits-the-inflammatory-responses-of-human-fibroblast-like-synoviocytes-via-the-tlr4-myd88-nf-%C3%AE%C2%BAb-signaling-pathway-in-rheumatoid-arthritis
#9
Ru-Bing Yao, Zhi-Ming Zhao, Ling-Jie Zhao, Hui Cai
Rheumatoid arthritis (RA) is a systemic autoimmune disorder mainly characterized by inflammation of the synovial tissue that can lead to destruction of bone and cartilage. Sinomenine is an alkaloid extracted from the stem of the Chinese medicinal plant Sinomenium acutum. It has been reported that sinomenine has immunosuppressive and anti-inflammatory properties. However, the molecular mechanism underlying the effect of sinominine on IL-1β-induced human RA fibroblast-like synoviocytes (RAFLS) is poorly understood...
June 1, 2017: Die Pharmazie
https://www.readbyqxmd.com/read/29209219/differential-effects-of-inhibitor-combinations-on-lysophosphatidic-acid-mediated-chemokine-secretion-in-unprimed-and-tumor-necrosis-factor-%C3%AE-primed-synovial-fibroblasts
#10
Weili Hui, Chenqi Zhao, Sylvain G Bourgoin
Lysophosphatidic acid (LPA) is a pleiotropic bioactive lysophospholipid involved in inflammatory mediator synthesis. Signaling through p38MAPK, ERK, Rho kinase, and MSK-CREB contributes to LPA-mediated IL-8 production in fibroblast-like synoviocytes (FLS) from rheumatoid arthritis (RA) patients. The study was undertaken to investigate how LPA activates MSKs and how signaling crosstalk between TNFα and LPA contributes to the super-production of cytokines/chemokines. RAFLS pretreated or not with TNFα were stimulated with LPA...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29115552/effects-of-daphnetin-combined-with-bcl2%C3%A2-sirna-on-antiapoptotic-genes-in-synovial-fibroblasts-of-rats-with-collagen%C3%A2-induced-arthritis
#11
Xiaoying Chen, Nanzhen Kuang, Xiaoping Zeng, Zhiqin Zhang, Yanyan Li, Wei Liu, Yingyuan Fu
The aim of the present study was to investigate the effects of daphnetin combined with B cell lymphoma 2 (Bcl2)‑targeted small interfering (si)RNA (si‑Bcl2) on antiapoptotic genes in fibroblast‑like synoviocytes (FLS) in rats with collagen II‑induced arthritis (CIA). The roles of si‑Bcl2 and daphnetin were determined by measuring the expression levels of Bcl2. Protein and mRNA expression levels of Bcl2 in FLS were determined by flow cytometry and reverse transcription‑quantitative polymerase chain reaction...
January 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29077233/death-effects-of-reveromycin-a-in-normal-and-disease-associated-cells-of-the-joint
#12
Haley Svrcina, Austin Greer, Seth Baker, Morgan Smith, Patricia Martinez, Nathan Granger, Natassja Thomas, Jaylin Miller, Ellen Steinke, Kelsey Davitt, Emily Sloane, Lauren Nugent, Ryan Sabo, Calli Williams, Mark A Lipton, Daniel Jones
Earlier work in our laboratory demonstrated that naturally occurring reveromycin A (Rev A) causes apoptosis in osteoclasts without accompanying necrosis. Rev A death effects in both normal and diseased joint cells were investigated in this study. A dose of 10 μM Rev A did not cause apoptosis nor necrosis in monolayer chondrocytes, even at pH 6.8, a pH mimicking that of an inflamed joint. In contrast, at the acidic pH Rev A did induce significant apoptosis (fourfold increase at 48 h of treatment, P < 0...
June 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28802098/response-time-of-indirectly-accessed-gas-exchange-depends-on-measurement-method
#13
Jakub Rafl, Filip Kulhanek, Petr Kudrna, Vaclav Ort, Karel Roubik
Noninvasive techniques are routinely used for assessment of tissue effects of lung ventilation. However, comprehensive studies of the response time of the methods are scarce. The aim of this study was to compare the response time of noninvasive methods for monitoring of gas exchange to sudden changes in the composition of the inspired gas. A prospective experimental study with 16 healthy volunteers was conducted. A ventilation circuit was designed that enabled a fast change in the composition of the inspiratory gas mixture while allowing spontaneous breathing...
August 12, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28124445/measurement-of-b-domain-deleted-refacto-af-activity-with-a-product-specific-standard-is-affected-by-choice-of-reagent-and-patient-specific-factors
#14
M Jacquemin, A Vodolazkaia, J Toelen, J Schoeters, I Van Horenbeeck, I Vanlinthout, M Debasse, K Peerlinck
INTRODUCTION: Postinfusion ReFacto AF levels can be difficult to measure accurately due to discrepancies between one-stage and chromogenic FVIII assays. To overcome this, the use of the ReFacto AF laboratory standard (RAFLS) is recommended, but there are discordant reports regarding its usefulness. AIM: We investigated whether calibration with RAFLS and measurement of ReFacto AF levels are influenced by the choice of reagents and patient-specific factors in one-stage FVIII assays...
July 2018: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28026003/quercetin-promotes-the-apoptosis-of-fibroblast-like-synoviocytes-in-rheumatoid-arthritis-by-upregulating-lncrna%C3%A2-malat1
#15
Fang Pan, Lihua Zhu, Haozhe Lv, Chunpeng Pei
Rheumatoid arthritis (RA) is a chronic autoimmune joint disease and fibroblast-like synoviocytes (FLS) are the resident mesenchymal cells of synovial joints. Quercetin is a dietary antioxidant. In this study, we aimed to explore the mechanisms responsible for the quercetin-induced apoptosis of FLS from patients with RA (termed RAFLS). RAFLS viability was determined following treatent of the cells with or without quercetin using the Cell Counting kit-8 (CCK-8) assay. The apoptosis of the RAFLS was analyzed using the Annexin V-fluorescein isothiocyanate (FITC) apoptosis detection kit I...
November 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27070486/models-of-pao2-response-to-the-continuous-distending-pressure-maneuver-during-high-frequency-oscillatory-ventilation-in-healthy-and-ards-lung-model-pigs
#16
Marianna Laviola, Jakub Rafl, Martin Rozanek, Petr Kudrna, Karel Roubik
UNLABELLED: Purpose/Aim : High-frequency oscillatory ventilation (HFOV) is a method of ventilation that theoretically achieves the goals of lung protective ventilation in acute respiratory distress syndrome (ARDS) patients. It is characterized by a rapid delivery of small tidal volumes at high frequencies oscillating around a continuous distending pressure (CDP). Optimization of CDP is not an easy task and it is titrated empirically in the clinical practice. The aim of this study is to investigate whether the level of CDP consistently affects the shape of the partial pressure of oxygen (PaO2) response to stepwise changes in CDP during HFOV of healthy and ARDS-induced pigs...
2016: Experimental Lung Research
https://www.readbyqxmd.com/read/26923246/oridonin-inhibits-cell-proliferation-and-induces-apoptosis-in-rheumatoid-arthritis-fibroblast-like-synoviocytes
#17
Cai-hong Shang, Qing-qing Zhang, Jian-hua Zhou
Oridonin, an active diterpenoid compound from Rabdosia rubescens, has anti-tumor effects. Rheumatoid arthritis fibroblast-like synoviocytes (RAFLS), a pathological hallmark of RA, exhibits "tumor-like" phenotype. Here, we investigated the effects of oridonin on the proliferation and apoptosis of RAFLS. Cell viability was measured by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-tetrazolium bromide (MTT) assay. Apoptosis and mitochondrial membrane potential were detected by flow cytometry. Western blot analysis was performed to examine the phosphorylation of extra-cellular regulated kinases (ERK1/2), C-Jun N-Terminal Kinase (JNK), and p38 mitogen-activated protein kinases and the expression of apoptosis-related proteins...
April 2016: Inflammation
https://www.readbyqxmd.com/read/26556954/chemical-hypoxia-brings-to-light-altered-autocrine-sphingosine-1-phosphate-signalling-in-rheumatoid-arthritis-synovial-fibroblasts
#18
Chenqi Zhao, Uriel Moreno-Nieves, John A Di Battista, Maria J Fernandes, Mohamed Touaibia, Sylvain G Bourgoin
Emerging evidence suggests a role for sphingosine-1-phosphate (S1P) in various aspects of rheumatoid arthritis (RA) pathogenesis. In this study we compared the effect of chemical hypoxia induced by cobalt chloride (CoCl2) on the expression of S1P metabolic enzymes and cytokine/chemokine secretion in normal fibroblast-like synoviocytes (FLS) and RAFLS. RAFLS incubated with CoCl2, but not S1P, produced less IL-8 and MCP-1 than normal FLS. Furthermore, incubation with the S1P2 and S1P3 receptor antagonists, JTE-013 and CAY10444, reduced CoCl2-mediated chemokine production in normal FLS but not in RAFLS...
2015: Mediators of Inflammation
https://www.readbyqxmd.com/read/26556605/wheat-germ-based-protein-libraries-for-the-functional-characterisation-of-the-arabidopsis-e2-ubiquitin-conjugating-enzymes-and-the-ring-type-e3-ubiquitin-ligase-enzymes
#19
Abdelaziz Ramadan, Keiichirou Nemoto, Motoaki Seki, Kazuo Shinozaki, Hiroyuki Takeda, Hirotaka Takahashi, Tatsuya Sawasaki
BACKGROUND: Protein ubiquitination is a ubiquitous mechanism in eukaryotes. In Arabidopsis, ubiquitin modification is mainly mediated by two ubiquitin activating enzymes (E1s), 37 ubiquitin conjugating enzymes (E2s), and more than 1300 predicted ubiquitin ligase enzymes (E3s), of which ~470 are RING-type E3s. A large proportion of the RING E3's gene products have yet to be characterised in vitro, likely because of the laborious work involved in large-scale cDNA cloning and protein expression, purification, and characterisation...
November 10, 2015: BMC Plant Biology
https://www.readbyqxmd.com/read/26308330/the-genes-and-the-environment-in-nasal-allergy
#20
REVIEW
Sergio E Chiarella, Rafle Fernandez, Pedro C Avila
PURPOSE OF REVIEW: In this review, we summarize the latest publications on the genetic and environmental determinants of allergic rhinitis. RECENT FINDINGS: Recent advances in genetic technology and bioinformatics have enabled simultaneous unbiased analysis of the entire genome regarding DNA sequence variants, epigenetic modifications and gene expression, providing functional correlates for DNA variants and phenotypes. As a result, new genes of mitochondrial and B-lymphocyte metabolism have been associated with allergic rhinitis phenotypes...
October 2015: Current Opinion in Allergy and Clinical Immunology
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