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Macrophage methotrexate

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https://www.readbyqxmd.com/read/29228558/1-palmitoyl-2-linoleoyl-3-acetyl-rac-glycerol-ameliorates-arthritic-joints-through-reducing-neutrophil-infiltration-mediated-by-il-6-stat3-and-mip-2-activation
#1
Young-Jun Kim, Jae Min Shin, Su-Hyun Shin, Joo Heon Kim, Ki-Young Sohn, Heung-Jae Kim, Jong-Koo Kang, Sun Young Yoon, Jae Wha Kim
The pathogenesis of rheumatoid arthritis (RA) has been implicated neutrophil extracellular traps (NETs) formation which could generate autoantigen. Neutrophil contributes to initiate and maintain the inflammatory process in the joint. In this study, we show that 1-palmitoyl-2-linoleoyl-3-acetyl-rac-glycerol (PLAG) decreases neutrophil migration by regulating the activity of STAT3, a regulator of IL-6 and MIP-2 expression. PLAG caused a decrease in IL-6 production in the RAW264.7 macrophage cell line and in rheumatoid arthritis-fibroblast-like synoviocytes via the regulation of STAT3 signaling without affecting NF-κB signaling...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29166574/altered-tnf-%C3%AE-response-by-aconibal-%C3%A2-and-methotrexate-in-a-lipopolysaccharide-induced-setting-of-inflammatory-conditions-potential-on-a-synergistic-combination
#2
Gunhyuk Park, Seoung Hoon Lee, Ji-Ye Han, Dal-Seok Oh
ETHNOPHARMACOLOGICAL RELEVANCE: Aconitum carmichaelii (AC) is a common herbal medicine used as anti-inflammatory and analgesic agent in Eastern Asia. In Korea, a commercial processed AC (Aconibal(®)) is traditionally used to treat the symptoms of spondylosis deformans and rheumatic pain. AIM OF STUDY: Rheumatoid arthritis (RA) is systemic and auto-immune disease characterized by chronic inflammation. Methotrexate (MTX) is often the first-line therapy for RA. If MTX monotherapy is ineffective or RA is initially severe, adding a tumor necrosis factor (TNF)-α inhibitor to the treatment can be beneficial...
November 19, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29154446/transmission-electron-microscopy-helpfulness-in-whipple-s-disease-masked-by-immunosuppressant-therapy-for-arthritis
#3
Alessandra Loiodice, Giuseppe Losurdo, Andrea Iannone, Roberta Rossi, Maria Grazia Fiore, Domenico Piscitelli
A 61-year-old woman received a diagnosis of undifferentiated non-erosive arthritis in 2010 and assumed methotrexate and steroids in 2014. After 1 year, she experienced watery diarrhea, vomiting, fever, weight loss, and severe hypoalbuminemia, thus being admitted into our Unit. Esophagogastroduodenoscopy showed duodenal lymphangiectasia and duodenal biopsy samples several foamy PAS-positive macrophages and villous subtotal atrophy. Transmission electron microscope demonstrated several extracellular and intracellular rod-shaped bacteria (Tropheryma whipplei)...
November 20, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/29133618/therapeutic-impact-of-nanoparticle-therapy-targeting-tumor-associate-macrophages
#4
Courtney Penn, Kun Yang, Hong Zong, Jae-Young Lim, Alex Cole, Dongli Yang, James Baker, Sascha N Goonewardena, Ronald J Buckanovich
Antiangiogenic therapies, despite initial encouragement, have demonstrated a limited benefit in ovarian cancer. Laboratory studies suggest anti-angiogenic therapy induced hypoxia can induce tumor "stemness' as resistance to antiangiogenic therapy develops and limits the therapeutic benefit. Resistance to antiangiogenic therapy and an induction of tumor stemness may be mediated by proangiogenic tumor associated macrophages (TAMs). As such TAMs have been proposed as a therapeutic target. We demonstrate here that ovarian TAMs express high levels of the folate receptor-2 (FOLR2) and can be selectively targeted using G5-dendrimer nanoparticles using methotrexate as both a ligand and a toxin...
November 13, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/29062314/harnessing-apoptotic-cell-clearance-to-treat-autoimmune-arthritis
#5
REVIEW
Philippe Saas, Francis Bonnefoy, Eric Toussirot, Sylvain Perruche
Early-stage apoptotic cells possess immunomodulatory properties. Proper apoptotic cell clearance during homeostasis has been shown to limit subsequent immune responses. Based on these observations, early-stage apoptotic cell infusion has been used to prevent unwanted inflammatory responses in different experimental models of autoimmune diseases or transplantation. Moreover, this approach has been shown to be feasible without any toxicity in patients undergoing allogeneic hematopoietic cell transplantation to prevent graft-versus-host disease...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29056774/glucocorticoid-management-in-rheumatoid-arthritis-morning-or-night-low-dose
#6
REVIEW
Sabrina Paolino, Maurizio Cutolo, Carmen Pizzorni
Morning symptoms of rheumatoid arthritis (RA) are linked to circadian increase of night inflammation, supported by inadequate cortisol secretion in active disease. Therefore, exogenous glucocorticoid administration in RA is recommended by EULAR and ACR from the beginning of the diagnosis, since may partially act like a "replacement therapy". In addition, the prevention/treatment of the night up-regulation of the immune/inflammatory reaction has been shown more effective when exogenous glucocorticoid administration is managed with a night-time-release formulation...
2017: Reumatologia
https://www.readbyqxmd.com/read/28979343/the-potential-use-of-methotrexate-in-the-treatment-of-cutaneous-leishmaniasis-in-vitro-assays-against-sensitive-and-meglumine-antimoniate-resistant-strains-of-leishmania-tropica
#7
Hossein Mahmoudvand, Farnaz Kheirandish, Seyed Reza Mirbadie, Mohammad Hassan Kayedi, Tahereh Rezaei Riabi, Abbas Ali Ghasemi, Mehdi Bamorovat, Iraj Sharifi
BACKGROUND: The present study aimed to evaluate the effect of methotrexate (MTX) alone and in combination with meglumine antimoniate (MA, Glucantime) against sensitive and MA-resistant Leishmania tropica stages in vitro. METHODS: The present study was carried out in 2014 in Leishmaniasis Research Center at School of Medicine, Kerman University of Medical sciences, Kerman, Iran. The effects of MTX alone and along with MA on promastigote and amastigote stages of sensitive (SS) and MA-resistant (RS) L...
July 2017: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28941039/a-randomized-phase-iib-study-of-mavrilimumab-and-golimumab-in-rheumatoid-arthritis
#8
Michael E Weinblatt, Iain B McInnes, Joel M Kremer, Pedro Miranda, Jiri Vencovsky, Xiang Guo, Wendy I White, Patricia C Ryan, Alex Godwood, Marius Albulescu, David Close, Gerd R Burmester
OBJECTIVE: This 24-week, Phase IIb, double-blind study (NCT01715896) evaluated mavrilimumab (anti-granulocyte-macrophage colony-stimulating factor [GM-CSFR]-α monoclonal antibody) and golimumab (anti-tumor necrosis factor [TNF] monoclonal antibody) in patients with rheumatoid arthritis (RA), with inadequate responses to disease-modifying antirheumatic drugs (DMARD-IR) and/or anti-TNF agents (anti-TNF-IR). METHODS: Patients with active RA and DMARD-IR (≥1 failed regimen), or DMARD-IR (≥1 failed regimen) and anti-TNF-IR (1-2 failed regimens), were randomized 1:1 to subcutaneous mavrilimumab 100 mg every other week (eow) or golimumab 50 mg every 4 weeks (Q4W) alternating with placebo Q4W, plus concomitant methotrexate...
September 21, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28932117/multifunctional-folate-receptor-targeting-and-ph-responsive-nanocarriers-loaded-with-methotrexate-for-treatment-of-rheumatoid-arthritis
#9
Jinlong Zhao, Menghui Zhao, Changhui Yu, Xueyan Zhang, Jiaxin Liu, Xinwei Cheng, Robert J Lee, Fengying Sun, Lesheng Teng, Youxin Li
Rheumatoid arthritis (RA) is an autoimmune disease characterized by progressive cartilage and bone destruction. Activated macrophages that overexpress folic acid (FA) receptors play an important role in RA, due to their abundance in inflamed synovial membrane and joints. In an effort to deliver drugs to the inflamed tissues, multifunctional FA receptor-targeting and pH-responsive nanocarriers were developed. They were composed of lipids, polyethylene glycol (PEG)-poly(lactic-co-glycolic acid) (PLGA) forming a hydrophilic shell, FA around the hydrophilic shell as a targeting ligand, and poly(cyclohexane-1,4-diylacetone dimethylene ketal) (PCADK) and PLGA as a hydrophobic core...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28871936/xanthoma-like-skin-changes-in-an-elderly-woman-with-a-normal-lipid-profile
#10
Piotr Nockowski, Zdzisław Woźniak, Adam Reich, Joanna Maj
Dear Editor, An 83-year-old woman developed yellow-brownish infiltrates, nodules, and tumors mimicking xanthomas, mostly involving the periorbital and chest area within three months (Figure 1). She had no abnormalities in serum cholesterol or triglycerides levels. A detailed laboratory analysis revealed the presence of mild monoclonal gammopathy with a presence of immunoglobulin G (IgG) kappa light chains; however, according to hematologist consultation, it did not require medical intervention. Imaging assessment and ultrasound examination did not show any specific involvement of internal organs...
July 2017: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/28832763/methotrexate-associated-to-lipid-core-nanoparticles-improves-cardiac-allograft-vasculopathy-and-the-inflammatory-profile-in-a-rabbit-heart-graft-model
#11
A I Fiorelli, D D Lourenço-Filho, E R Tavares, P O Carvalho, A F Marques, P S Gutierrez, R C Maranhão, N A G Stolf
Coronary allograft vasculopathy is an inflammatory-proliferative process that compromises the long-term success of heart transplantation and has no effective treatment. A lipid nanoemulsion (LDE) can carry chemotherapeutic agents in the circulation and concentrates them in the heart graft. The aim of the study was to investigate the effects of methotrexate (MTX) associated to LDE. Rabbits fed a 0.5% cholesterol diet and submitted to heterotopic heart transplantation were treated with cyclosporine A (10 mg·kg-1·day-1 orally) and allocated to treatment with intravenous LDE-MTX (4 mg/kg, weekly, n=10) or with weekly intravenous saline solution (control group, n=10), beginning on the day of surgery...
August 17, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28754008/combination-therapy-of-peg-hm-3-and-methotrexate-retards-adjuvant-induced-arthritis
#12
Jingchao Hao, Xiaodong Wu, Sarra Setrerrahmane, Kun Qian, Yueying Hou, Liting Yu, Chenyu Lin, Qianqian Wu, Hanmei Xu
At present, the early phenomenon of inflammatory angiogenesis is rarely studied in Rheumatoid arthritis (RA). Previous research found that PEG-HM-3, an integrin inhibitor, possessed anti-angiogenesis and anti-rheumatic activity. In this study, the advantages of inhibiting angiogenesis and immune cell adhesion and migration, as well as the benefits of anti-arthritis effects, were evaluated using a combination of PEG-HM-3 and methotrexate (MTX). In vitro, spleen cell proliferation and the levels of tumor necrosis factor α (TNF-α) in macrophage supernatant were assessed...
July 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28753571/1-palmitoyl-2-linoleoyl-3-acetyl-rac-glycerol-ameliorates-arthritic-joints-through-reducing-neutrophil-infiltration-mediated-by-il-6-stat3-and-mip-2-activation
#13
Young-Jun Kim, Jae Min Shin, Su-Hyun Shin, Joo Heon Kim, Ki-Young Sohn, Heung-Jae Kim, Jong-Koo Kang, Sun Young Yoon, Jae Wha Kim
The pathogenesis of rheumatoid arthritis (RA) has been implicated neutrophil extracellular traps (NETs) formation which could generate autoantigen. Neutrophil contributes to initiate and maintain the inflammatory process in the joint. In this study, we show that 1-palmitoyl-2-linoleoyl-3-acetyl-rac-glycerol (PLAG) decreases neutrophil migration by regulating the activity of STAT3, a regulator of IL-6 and MIP-2 expression. PLAG caused a decrease in IL-6 production in the RAW264.7 macrophage cell line and in rheumatoid arthritis-fibroblast-like synoviocytes via the regulation of STAT3 signaling without affecting NF-κB signaling...
July 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/28665955/pro-fibrotic-compounds-induce-stellate-cell-activation-ecm-remodelling-and-nrf2-activation-in-a-human-3d-multicellular-model-of-liver-fibrosis
#14
Vincenzo Prestigiacomo, Anna Weston, Simon Messner, Franziska Lampart, Laura Suter-Dick
BACKGROUND & AIMS: Currently most liver fibrosis research is performed in vivo, since suitable alternative in vitro systems which are able to recapitulate the cellular events leading to liver fibrosis are lacking. Here we aimed at generating a system containing cells representing the three key players of liver fibrosis (hepatocyte, Kupffer cells and stellate cells) and assess their response to pro-fibrotic compounds such as TGF-β1, methotrexate (MTX) and thioacetamide (TAA). METHODS: Human cell lines representing hepatocytes (HepaRG), Kupffer cell (THP-1 macrophages) and stellate cells (hTERT-HSC) were co-cultured using the InSphero hanging drop technology to generate scaffold-free 3D microtissues, that were treated with pro-fibrotic compounds (TGF-β1, MTX, TAA) for up to 14 days...
2017: PloS One
https://www.readbyqxmd.com/read/28639600/effects-of-polysaccharide-fractions-isolated-from-caltha-palustris-l-on-the-activity-of-phagocytic-cells-humoral-immune-response-in-mice-with-collagen-induced-arthritis-a-comparison-with-methotrexate
#15
Agnieszka Suszko, Bożena Obmińska-Mrukowicz
BACKGROUND & OBJECTIVES: The extracts from Caltha palustris L. have been shown to be beneficial for treating arthritis and rheumatism. In this study, the immunomodulatory effects of polysaccharide fractions B and C of C. palustris extracts were studied, using the collagen-induced arthritis (CIA) mouse arthritis experimental model. The aim was to determine the activity of blood phagocytic cells and humoral immune response in CIA mice treated with polysaccharide fractions from C. palustris...
February 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28598681/soluble-cd206-plasma-levels-in-rheumatoid-arthritis-reflect-decrease-in-disease-activity
#16
Line Dam Heftdal, Kristian Stengaard-Pedersen, Lykke Midtbøll Ørnbjerg, Merete Lund Hetland, Kim Hørslev-Petersen, Peter Junker, Mikkel Østergaard, Malene Hvid, Bent Deleuran, Holger Jon Møller, Stinne Ravn Greisen
Rheumatoid arthritis (RA) is characterized by chronic joint inflammation and infiltration by activated macrophages. TNFα is a central mediator in this process. The mannose receptor, CD206, is a scavenger receptor expressed by M2A-macrophages and dendritic cells. It is involved in collagen internalization and degradation. The soluble form has been suggested as a biomarker of M2A-macrophage activation. The aim of this study was to investigate sCD206 plasma levels in early RA patients initiating anti-TNFα treatment...
June 9, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28569209/in-vivo-monitoring-of-anti-folate-therapy-in-arthritic-rats-using-18-f-fluoro-peg-folate-and-positron-emission-tomography
#17
Durga M S H Chandrupatla, Gerrit Jansen, Ricardo Vos, Mariska Verlaan, Qingshou Chen, Philip S Low, Albert D Windhorst, Adriaan A Lammertsma, Conny J van der Laken, Carla F M Molthoff
BACKGROUND: Folate receptor β (FRβ) is involved in facilitating cellular uptake of folates and anti-folates (such as methotrexate (MTX)). In rheumatoid arthritis, FRβ is expressed on synovial macrophages and recently has been explored as a biomarker for imaging in arthritic rats using the folate-based positron emission tomography (PET) tracer [(18)F]fluoro-PEG-folate. The purpose of this study was to examine whether this folate tracer can also be used to monitor therapeutic efficacy of MTX in arthritic rats...
May 31, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28553113/methotrexate-carried-in-lipid-core-nanoparticles-reduces-myocardial-infarction-size-and-improves-cardiac-function-in-rats
#18
Raul C Maranhão, Maria C Guido, Aline D de Lima, Elaine R Tavares, Alyne F Marques, Marcelo D Tavares de Melo, Jose C Nicolau, Vera Mc Salemi, Roberto Kalil-Filho
PURPOSE: Acute myocardial infarction (MI) is accompanied by myocardial inflammation, fibrosis, and ventricular remodeling that, when excessive or not properly regulated, may lead to heart failure. Previously, lipid core nanoparticles (LDE) used as carriers of the anti-inflammatory drug methotrexate (MTX) produced an 80-fold increase in the cell uptake of MTX. LDE-MTX treatment reduced vessel inflammation and atheromatous lesions induced in rabbits by cholesterol feeding. The aim of the study was to investigate the effects of LDE-MTX on rats with MI, compared with commercial MTX treatment...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28418334/juvenile-idiopathic-arthritis
#19
Kenan Barut, Amra Adrovic, Sezgin Şahin, Özgür Kasapçopur
Juvenile idiopathic arthritis is the most common chronic rheumatic disease of unknown aetiology in childhood and predominantly presents with peripheral arthritis. The disease is divided into several subgroups, according to demographic characteristics, clinical features, treatment modalities and disease prognosis. Systemic juvenile idiopathic arthritis, which is one of the most frequent disease subtypes, is characterized by recurrent fever and rash. Oligoarticular juvenile idiopathic arthritis, common among young female patients, is usually accompanied by anti-nuclear antibodie positivity and anterior uveitis...
April 5, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28402587/methotraxate-loaded-hybrid-nanoconstructs-target-vascular-lesions-and-inhibit-atherosclerosis-progression-in-apoe-mice
#20
Cinzia Stigliano, Maricela R Ramirez, Jaykrishna V Singh, Santosh Aryal, Jaehong Key, Elvin Blanco, Paolo Decuzzi
Atherosclerosis is an inflammatory disorder characterized by the progressive thickening of blood vessel walls eventually resulting in acute vascular syndromes. Here, intravenously injectable hybrid nanoconstructs are synthesized for tempering immune cell inflammation locally and systemically. Lipid and polymer chains are nanoprecipitated to form 100 nm spherical polymeric nanoconstructs (SPNs), loaded with methotrexate (MTX) and subsequently labeled with Cu(64) and fluorescent probes for combined nuclear/optical imaging...
April 12, 2017: Advanced Healthcare Materials
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