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https://www.readbyqxmd.com/read/28431044/leonurine-attenuates-fibroblast-like-synoviocyte-mediated-synovial-inflammation-and-joint-destruction-in-rheumatoid-arthritis
#1
Nan Li, Qiang Xu, Qingping Liu, Dongmei Pan, Yubao Jiang, Minying Liu, Mingling Liu, Hanshi Xu, Changsong Lin
Objective.: To explore the role of leonurine in the regulation of synovial inflammation and joint destruction inRA. Methods.: Fibroblast-like synoviocytes were isolated from synovial tissue from RA patients. Pro-inflammatory cytokine and MMP expression was evaluated using real-time PCR and a cytometric bead array. Cell migration and invasion in vitro were measured using the Boyden chamber method and the scratch assay, respectively. Protein expression was measured by western blotting...
April 18, 2017: Rheumatology
https://www.readbyqxmd.com/read/28429194/photobiomodulation-therapy-associated-with-treadmill-training-in-the-oxidative-stress-in-a-collagen-induced-arthritis-model
#2
Solange Almeida Dos Santos, Marcia Ataize Dos Santos Vieira, Maira Cécilia Brandão Simões, Andrey Jorge Serra, Ernesto Cesar Leal-Junior, Paulo de Tarso Camillo de Carvalho
Rheumatoid arthritis (RA) is a chronic inflammatory disease characterized by chronic and systemic inflammation, which leads to the destruction of the cartilage and bone and affects tissues in multiple joints. Oxidative stress has been implicated with regards to involvement in various disease conditions, such as diabetes mellitus and neurodegenerative, respiratory, cardiovascular, and RA diseases. In vivo experimental studies using photobiomodulation therapy (PBMT) have shown positive effects in reducing lipid peroxidation and in increasing antioxidant activity...
April 21, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28429097/immunomodulatory-and-therapeutic-role-of-cinnamomum-verum-extracts-in-collagen-induced-arthritic-balb-c-mice
#3
Mirza Muhammad Fahd Qadir, Attya Bhatti, Muhammad Usman Ashraf, Mansur Abdullah Sandhu, Sidrah Anjum, Peter John
ETHNOPHARMACOLOGICAL RELEVANCE: Cinnamomum verum (CV), also known as 'Dalchini', is the dry bark of the Cinnamomum verum (L.) plant, and has been used as a traditional Pakistani medicine to alleviate pain and inflammation in patients suffering from arthritic rheumatism. It contains alkaloids, triterpenes, Cinnamaldehyde and other volatile oils. The aim of the present study was to investigate the underlying biological effect of ethyl alcohol (EtOH) and methyl alcohol (MeOH) extracts from CV on collagen type-II induced arthritic (CIA) mice...
April 20, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/28425846/alterations-to-adipose-tissue-morphology-during-inflammatory-arthritis-is-indicative-of-vasculopathology-in-dba-1-mice
#4
Katie Sime, Ernest H Choy, Anwen S Williams
The physiologic function of adipose tissue is altered by the host's inflammatory response; the implications for maintaining human health and regulating inflammation-associated disease progression are ill defined. However, this cannot be investigated in humans, therefore the use of animal models is required. With the aim to determine morphological and molecular alterations to perivascular and organ-associated adipose tissues during inflammatory arthritis, collagen-induced arthritis (CIA) was established in male DBA/1 mice...
February 21, 2017: Adipocyte
https://www.readbyqxmd.com/read/28419144/stepwise-inhibition-of-t-cell-recruitment-at-post-capillary-venules-by-orally-active-desulfated-heparins-in-inflammatory-arthritis
#5
Hasan Al Faruque, Jin Hee Kang, Seung Rim Hwang, Shijin Sung, Md Mahmudul Alam, Keum Hee Sa, Eon Jeong Nam, Young Ro Byun, Young Mo Kang
Identification of the structure-function relationship of heparin, particularly between 2-O-, 6-O-, and N-sulfation and its anticoagulant or anti-inflammatory activities, is critical in order to evaluate the biological effects of heparin, especially in conjunction with modifications for oral formulation. In this study, we demonstrated that removal of 2-O, 6-O, or N-desulfation and their hydrophobic modifications have differential effects on the blocking of interactions between sLeX and P-and L-selectins, with highest inhibition by 6-O desulfation, which was consistent with their in vivo therapeutic efficacies on CIA mice...
2017: PloS One
https://www.readbyqxmd.com/read/28418011/more-than-25-years-of-genetic-studies-of-clozapine-induced-agranulocytosis
#6
REVIEW
S A J de With, S L Pulit, W G Staal, R S Kahn, R A Ophoff
Clozapine is one of the most effective atypical antipsychotic drugs prescribed to patients with treatment-resistant schizophrenia. Approximately 1% of patients experience potential life-threatening adverse effects in the form of agranulocytosis, greatly hindering its applicability in clinical practice. The etiology of clozapine-induced agranulocytosis (CIA) remains unclear, but is thought to be a heritable trait. We reviewed the genetic studies of CIA published thus far. One recurrent finding from early candidate gene study to more recent genome-wide analysis is that of the involvement of human leukocyte antigen locus...
April 18, 2017: Pharmacogenomics Journal
https://www.readbyqxmd.com/read/28417158/incidence-and-predictive-factors-of-internet-addiction-among-chinese-secondary-school-students-in-hong-kong-a-longitudinal-study
#7
Joseph T F Lau, Danielle L Gross, Anise M S Wu, Kit-Man Cheng, Mason M C Lau
PURPOSE: Internet use has global influences on all aspects of life and has become a growing concern. Cross-sectional studies on Internet addiction (IA) have been reported but causality is often unclear. More longitudinal studies are warranted. METHODS: We investigated incidence and predictors of IA conversion among secondary school students. A 12-month longitudinal study was conducted among Hong Kong Chinese Secondary 1-4 students (N = 8286). Using the 26-item Chen Internet Addiction Scale (CIAS; cut-off >63), non-IA cases were identified at baseline...
April 17, 2017: Social Psychiatry and Psychiatric Epidemiology
https://www.readbyqxmd.com/read/28416614/modeling-combined-immunosuppressive-and-anti-inflammatory-effects-of-dexamethasone-and-naproxen-in-rats-predicts-the-steroid-sparing-potential-of-naproxen
#8
Xiaonan Li, Debra C DuBois, Dawei Song, Richard R Almon, William J Jusko, Xijing Chen
Dexamethasone (DEX), a widely prescribed corticosteroid (CS), has long been the cornerstone for the treatment of inflammation and immunological dysfunctions in Rheumatoid Arthritis (RA). The CS are frequently used in combination with other anti-rheumatic agents such as nonsteroidal anti-inflammatory drugs (NSAIDs) and disease-modifying anti-rheumatic drugs (DMARDs) to mitigate disease symptoms and minimize unwanted effects. The steroid dose-sparing potential of the NSAID naproxen (NPX) was explored with in vitro and in vivo studies...
April 17, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28415811/il-33-st2-mediated-inflammation-in-macrophages-is-directly-abrogated-by-il-10-during-rheumatoid-arthritis
#9
Si Chen, Bingni Chen, Zhongyang Wen, Zhong Huang, Liang Ye
IL-10 is an immunosuppressive cytokine produced and sensed by many immune cells and exerts a protective role in autoimmune diseases. However, the underlying mechanism by which IL-10 contributes to prevent the arthritic inflammation in macrophages is poorly understood. Herein we report on a novel anti-arthritic property of IL-10 through the inhibition of IL-33 signaling by macrophages during collagen-induced arthritis (CIA) development. We show that IL-33 expression rather than its receptor (ST2) is positively correlated with IL-10 level in active RA...
March 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28408733/high-performance-liquid-chromatography-hplc-quantification-of-liposome-delivered-doxorubicin-in-arthritic-joints-of-collagen-induced-arthritis-rats
#10
Hongqing Niu, Menghua Xu, Shuangtian Li, Junwei Chen, Jing Luo, Xiangcong Zhao, Chong Gao, Xiaofeng Li
BACKGROUND Neoangiogenesis occurring in inflamed articular synovium in early rheumatoid arthritis (RA) is characterized by enhanced vascular permeability that allows nanoparticle agents, including liposomes, to deliver encapsulated drugs to arthritic joints and subsequently improve therapeutic efficacy and reduce adverse effects. However, the targeting distribution of liposomes in arthritic joints during RA has not been quantitatively demonstrated. We performed this study to evaluate the targeting distribution of PEGylated doxorubicin liposomes in the arthritic joints of collagen-induced arthritis (CIA) rats by high-performance liquid chromatography (HPLC)...
April 14, 2017: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/28401953/overexpression-of-heparanase-enhances-t-lymphocyte-activities-and-intensifies-the-inflammatory-response-in-a-model-of-murine-rheumatoid-arthritis
#11
Andreas Digre, Kailash Singh, Magnus Åbrink, Rogier M Reijmers, Stellan Sandler, Israel Vlodavsky, Jin-Ping Li
Heparanase is an endo-glucuronidase that degrades heparan sulfate chains. The enzyme is expressed at a low level in normal organs; however, elevated expression of heparanase has been detected in several inflammatory conditions, e.g. in the synovial joints of rheumatoid arthritis (RA) patients. Herein, we have applied the model of collagen-induced arthritis (CIA) to transgenic mice overexpressing human heparanase (Hpa-tg) along with wildtype (WT) mice. About 50% of the induced animals developed clinical symptoms, i...
April 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28382703/rationally-designed-ligand-independent-peptide-inhibitors-of-trem-1-ameliorate-collagen-induced-arthritis
#12
Zu T Shen, Alexander B Sigalov
Triggering receptor expressed on myeloid cells 1 (TREM-1) is critically involved in the pathogenesis of rheumatoid arthritis (RA). In contrast to cytokine blockers, therapeutic blockade of TREM-1 can blunt excessive inflammation while preserving the capacity for microbial control. However, the nature of the TREM-1 ligand(s) and mechanisms of TREM-1 signalling are still not yet well understood, impeding the development of clinically relevant inhibitors of TREM-1. The aim of this study was to evaluate the anti-arthritic activity of a novel, ligand-independent TREM-1 inhibitory nonapeptide GF9 that was rationally designed using the signalling chain homo oligomerization (SCHOOL) model of cell signalling...
April 6, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28373127/rp5063-an-atypical-antipsychotic-drug-with-a-unique-pharmacologic-profile-improves-declarative-memory-and-psychosis-in-mouse-models-of-schizophrenia
#13
Lakshmi Rajagopal, Sunoh Kwon, Mei Huang, Eric Michael, Laxminarayan Bhat, Marc Cantillon, Herbert Y Meltzer
Various types of atypical antipsychotic drugs (AAPDs) modestly improve the cognitive impairment associated with schizophrenia (CIAS). RP5063 is an AAPD with a diverse and unique pharmacology, including partial agonism at dopamine (DA) D2, D3, D4, serotonin (5-HT)1A, and 5-HT2A receptors (Rs), full agonism at α4β2 nicotinic acetylcholine (ACh)R (nAChR), and antagonism at 5-HT2B, 5-HT6, and 5-HT7Rs. Most atypical APDs are 5-HT2A inverse agonists. The efficacy of RP5063 in mouse models of psychosis and episodic memory were studied...
March 31, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28371624/dextran-sulfate-nanoparticles-as-a-theranostic-nanomedicine-for-rheumatoid-arthritis
#14
Roun Heo, Dong Gil You, Wooram Um, Ki Young Choi, Sangmin Jeon, Jong-Sung Park, Yuri Choi, Seunglee Kwon, Kwangmeyung Kim, Ick Chan Kwon, Dong-Gyu Jo, Young Mo Kang, Jae Hyung Park
With the aim of developing nanoparticles for targeted delivery of methotrexate (MTX) to inflamed joints in rheumatoid arthritis (RA), an amphiphilic polysaccharide was synthesized by conjugating 5β-cholanic acid to a dextran sulfate (DS) backbone. Due to its amphiphilic nature, the DS derivative self-assembled into spherical nanoparticles (220 nm in diameter) in aqueous conditions. The MTX was effectively loaded into the DS nanoparticles (loading efficiency: 73.0%) by a simple dialysis method. Interestingly, the DS nanoparticles were selectively taken up by activated macrophages, which are responsible for inflammation and joint destruction, via scavenger receptor class A-mediated endocytosis...
March 26, 2017: Biomaterials
https://www.readbyqxmd.com/read/28370303/technical-note-monte-carlo-study-of-106-ru-106-rh-ophthalmic-plaques-including-the-106-rh-gamma-spectrum
#15
Marcelino Hermida-López, Lorenzo Brualla
PURPOSE: To assess the influence of the (106) Rh gamma spectrum on the Monte Carlo simulation of (106) Ru/(106) Rh ophthalmic plaques, which has been neglected without a quantitative estimation in all previous publications. METHODS: Simulations were run with the penelope 2014 Monte Carlo code for radiation transport. Depth-dose distributions in water were simulated for the plaque models CCA, CCC, CCX and CIA. In addition to the (106) Rh beta spectrum, all gamma components from the (106) Rh gamma spectrum were included in the simulations...
April 1, 2017: Medical Physics
https://www.readbyqxmd.com/read/28363501/corrigendum-to-partial-depletion-of-natural-gut-flora-by-antibiotic-aggravates-collagen-induced-arthritis-cia-in-mice-pharmacol-rep-66-2014-250-255
#16
Iwona Dorożyńska, Monika Majewska-Szczepanik, Katarzyna Marcińska, Marian Szczepanik
No abstract text is available yet for this article.
March 28, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28357074/traf6-regulates-the-effects-of-polarized-maturation-of-tolerability-marrow-derived-dendritic-cells-on-collagen-induced-arthritis-in-mice
#17
Chenchen Zhuang, Xuezhi Hong, Jia Liu, Xiaohong Luo, Hanyou Mo
The study aimed to investigate the relationship between tumor necrosis factor receptor-associated factor 6 (TRAF6) and a differentially mature dendritic cell (mDC) in collagen-induced arthritis (CIA) mice and to determine whether or not TRAF6 regulates the activation of an immature dendritic cell (iDC) and inhibits iDC maturation to induce immune tolerance. The mouse bone marrow stem cells were induced with recombinant granulocyte-macrophage colony-stimulating factor (rmGM-CSF) and recombinant interleukin-4 (rmIL-4) to differentiate immature dendritic cells (DCs), which were divided into four groups with different maturation states: rmGM-CSF, rmIL-4; TNF-α; LPS; and FK506 group...
February 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28351204/results-from-the-visibility-iliac-study
#18
John H Rundback, Patrick Peeters, Jon C George, Michael R Jaff, Peter L Faries
PURPOSE: To evaluate the safety and effectiveness of primary stenting of the common (CIA) or external iliac artery (EIA) using the Visi-Pro Balloon-Expandable Peripheral Stent System for treatment of stenotic, restenotic, or occluded lesions. METHODS: Between 2011 and 2012, 75 patients (mean age 64.2±8.9 years; 46 men) with Rutherford category 2-4 ischemia and atherosclerotic lesions ≤10 cm in length underwent iliac artery stenting at 17 centers in the United States and Europe...
February 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28349925/paroxetine-alleviates-t-lymphocyte-activation-and-infiltration-to-joints-of-collagen-induced-arthritis
#19
Qingtong Wang, Longsheng Wang, Li Wu, Mei Zhang, Shanshan Hu, Rui Wang, Yongsheng Han, Yujing Wu, Lingling Zhang, Xinming Wang, Wuyi Sun, Wei Wei
T cell infiltration to synovial tissue is an early pathogenic mechanism of rheumatoid arthritis (RA). In the present work, we reveal that G protein coupled receptor kinase 2 (GRK2) is abundantly expressed in T cells of collagen-induced arthritis (CIA). A GRK2 inhibitor, paroxetine protects the joints from inflammation and destruction, primarily through inhibition of both CD4(+) helper T (Th) cell and CD8(+) cytotoxic T (Tc) cell migration to synovial tissue. Meanwhile, paroxetine restores the balance of Th/Tc, effector Th (Theff)/ naïve Th (Thnaive) and effector Tc (Tceff)/ naïve Tc (Tcnaive) to equilibrium by elevating the frequency of Thnaive, Tcnaive and regulatory Th cells; reducing the increased Theff, activated Th and Tceff, having a similar effect as methotrexate (MTX)...
March 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28347261/dopamine-d4-receptor-stimulation-contributes-to-novel-object-recognition-relevance-to-cognitive-impairment-in-schizophrenia
#20
Masanori Miyauchi, Nichole M Neugebauer, Herbert Y Meltzer
Several atypical antipsychotic drugs (APDs) have high affinity for the dopamine (DA) D4 receptor, but the relevance to the efficacy for the treatment of cognitive impairment associated with schizophrenia (CIAS) is poorly understood. The aim of this study was to investigate the effects of D4 receptor stimulation or blockade on novel object recognition (NOR) in normal rats and on the sub-chronic phencyclidine (PCP)-induced novel object recognition deficit. The effect of the D4 agonist, PD168077, and the D4 antagonist, L-745,870, were studied alone, and in combination with clozapine and lurasidone...
April 2017: Journal of Psychopharmacology
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