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Inflammation

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https://www.readbyqxmd.com/read/30097812/anti-inflammatory-action-of-metformin-with-respect-to-cx3cl1-cx3cr1-signaling-in-human-placental-circulation-in-normal-glucose-versus-high-glucose-environments
#1
D Szukiewicz, Grzegorz Szewczyk, Michal Pyzlak, Aleksandra Stangret, Michal Bachanek, Seweryn Trojanowski, Habib Alkhalayla, Jaroslaw Wejman
Upregulation of chemokine CX3CL1 and its receptor CX3CR1 occurs in the diabetic human placenta. Metformin, an insulin-sensitizing biguanide, is used in the therapy of diabetic pregnancy. By preventing the activation of NF-κB, metformin exhibits anti-inflammatory properties. We examined the influence of hyperglycemia (25 mmol/L glucose; HG group; N = 36) on metformin-mediated effects on CX3CL1 and TNF-α production by placental lobules perfused extracorporeally. Additionally, CX3CR1 expression and contents of CX3CR1, TNF-α receptor 1 (TNFR1), and NF-κB proteins in the placental tissue were evaluated...
August 10, 2018: Inflammation
https://www.readbyqxmd.com/read/30091035/the-role-of-sirt1-in-autophagy-in-lipopolysaccharide-induced-mouse-type-ii-alveolar-epithelial-cells
#2
Junyan Liu, Xuejun Lv, Weijie Dong, Mingdong Hu, Jiancheng Xu, Guisheng Qian, Yuying Li
Silent mating type information regulation 2 homolog-1 (SIRT1) is involved in a wide range of cellular processes because of its role as a deacetylated histone and its association with a variety of transcription factors. SIRT1 has essential roles in autophagy, including in the formation of autophagic vacuoles and the assembly of autophagy-related gene (ATG) protein complexes. The present study focused on the role of SIRT1 in autophagy in lipopolysaccharide (LPS)-induced mouse type II alveolar epithelial cells (AECII)...
August 8, 2018: Inflammation
https://www.readbyqxmd.com/read/30091034/blockade-of-aquaporin-4-inhibits-irradiation-induced-pulmonary-inflammation-and-modulates-macrophage-polarization-in-mice
#3
Yuhui Li, Hongda Lu, Xiaojuan Lv, Qiu Tang, Wangxia Li, Hongfei Zhu, Yuan Long
To investigate the effects of aquaporin 4 (AQP4) inhibitor in irradiation-induced pulmonary inflammation in mice. A single dose of 75 Gy was delivered to the left lung of mice to induce radiation pneumonitis. For inhibition of AQP4, 200 mg/kg of TGN-020 was administered i.p. one time per 2 days post-irradiation. Blockade of AQP4 with TGN-020 resulted in the inhibition of inflammatory cell infiltration and the downregulation of inflammatory cytokines (IL-6, IL-17, and TGF-β), chemokines (MIP1a and MCP1), fibrosis-related (Col3al and Fn1), and M2 macrophage marker (Arg1) post-irradiation...
August 8, 2018: Inflammation
https://www.readbyqxmd.com/read/30091033/antibody-cross-linking-of-cd14-activates-mertk-and-promotes-human-macrophage-clearance-of-apoptotic-neutrophils-the-dual-role-of-cd14-at-the-crossroads-between-m1-and-m2c-polarization
#4
Gaetano Zizzo, Philip L Cohen
Mer receptor tyrosine kinase (MerTK) is key for efficient phagocytosis of apoptotic neutrophils (ANs) and homeostasis of IL-10 production by human anti-inflammatory M2c monocytes/macrophages. We asked whether stimulation of M2c surface receptors contributes in turn to MerTK activation. For this purpose, human monocytes/macrophages were differentiated under M1, M2a, and M2c polarizing conditions. The effects of antibody-mediated cross-linking of M2c receptors (i.e., CD14, CD16, CD32, CD163, CD204) on MerTK phosphorylation and phagocytosis of ANs were tested...
August 8, 2018: Inflammation
https://www.readbyqxmd.com/read/30088170/protective-effects-of-a-rho-kinase-inhibitor-on-paraquat-induced-acute-lung-injuries-in-rats
#5
Lichun Zhang, Qiuhe Li, Zhenning Liu, Wei Liu, Min Zhao
Fasudil, a rock kinase inhibitor, can inhibit systemic inflammation and prevent paraquat (PQ)-induced acute lung injuries in rats; however, the mechanisms for these protective effects remain elusive. This study investigated how the Rho/ROCK signaling pathway enables fasudil to protect against acute lung injuries in PQ-treated rats. Wistar rats (n = 240) were pretreated with fasudil (10 and 30 mg/kg, i.p.) 1 h prior to PQ administration. When compared to rats with PQ-induced lung injuries, rats pretreated with fasudil had significantly fewer polymorphonuclear neutrophils and lower concentrations of protein, TNF-α, IL-1β, and IL-6 in their bronchoalveolar lavage fluid...
August 7, 2018: Inflammation
https://www.readbyqxmd.com/read/30088169/systemic-transplantation-of-mesenchymal-stem-cells-modulates-endothelial-cell-adhesion-molecules-induced-by-ovalbumin-in-rat-model-of-asthma
#6
Rana Keyhanmanesh, Reza Rahbarghazi, Mahdi Ahmadi
Achieving the optimal clinical outcome of mesenchymal stem cells (MSCs) is particularly dependent on fundamental understanding of therapeutic mechanisms. The current study was focused on the possible mechanisms by which rat bone marrow-derived mesenchymal stem cells (rBMMSCs) and/or conditioned media (CM) display broad immunomodulatory properties for ameliorating of asthma-related pathological changes. Male rats were divided equally into four experimental groups (n = 6): healthy rats received 50 μl PBS intravenously (group C), sensitized rats received 50 μl PBS intravenously (group OVA), sensitized rats received 50 μl CM intravenously (group OVA + CM), and sensitized rats received 50 μl PBS intravenously containing 2 × 106 rBMMSCs (group OVA + MSCs)...
August 7, 2018: Inflammation
https://www.readbyqxmd.com/read/30073566/hyperbaric-oxygen-alleviates-the-inflammatory-response-induced-by-lps-through-inhibition-of-nf-%C3%AE%C2%BAb-mapks-ccl2-cxcl1-signaling-pathway-in-cultured-astrocytes
#7
Su Liu, Chun Lu, Ying Liu, Xiaoyun Zhou, Li Sun, Qi Gu, Guangyu Shen, Aisong Guo
The purpose of this study was to investigate the inhibition neuroinflammation mechanisms of hyperbaric oxygen therapy (HBOT). Primary astrocytes were incubated with lipopolysaccharide (LPS) after which they underwent HBOT and separate administration of inflammatory cytokine inhibitors. The respective expression of inflammatory factors was then detected. Results showed that LPS significantly induced increases in the expression levels of chemokine (C-X-C motif) ligand 1 (CXCL1), chemokine C-C motif ligand 2 (CCL2), phospho-nuclear factor-kappa B (p-NF-κB), phospho-c-Jun N-terminal kinase (p-JNK), phospho-extracellular signal-regulated kinase (p-ERK), and phospho-p38 (p-p38) in cultured astrocytes and peaked at 3 h...
August 3, 2018: Inflammation
https://www.readbyqxmd.com/read/30073565/common-pathogenesis-of-acne-vulgaris-and-atherosclerosis
#8
REVIEW
Hao Jiang, Changyi Li
Foam cells are lipid-loaded macrophages and neutrophils that are generated from a massive uptake of oxidized lipid. Foam cells are a pathological hallmark of atherosclerosis, and have also been found in acne lesions. The same pathological changes determine the common pathogenesis. According to the pathological function of foam cells in these lesions, we put forward a viewpoint on the pathogenesis of acne and atherosclerotic plaques.
August 2, 2018: Inflammation
https://www.readbyqxmd.com/read/30069664/therapeutic-effect-of-penta-acetyl-geniposide-on-adjuvant-induced-arthritis-in-rats-involvement-of-inducing-synovial-apoptosis-and-inhibiting-nf-%C3%AE%C2%BAb-signal-pathway
#9
Li Cai, Chun-Mei Li, Wen-Jian Tang, Ming-Ming Liu, Wei-Na Chen, Yuan-Ye Qiu, Rong Li
Previous studies demonstrated that penta-acetyl geniposide ((Ac)5 GP, an acetylated derivative of geniposide) exhibited better pharmacological functions than geniposide. This study was aimed to observe the potential effect of (Ac)5 GP on adjuvant-induced arthritis (AIA) in rat and explore the involved mechanisms. Rat AIA was induced by complete Freund's adjuvant. (Ac)5 GP (30, 60, 120 mg/kg) was given to AIA rats by intragastric administration. Paw swelling, polyarthritis index, serum pro-inflammatory cytokines levels, histological assessments of ankle joint, and proteoglycan expression were respectively measured to evaluate the therapeutic effect of (Ac)5 GP on rat AIA...
August 2, 2018: Inflammation
https://www.readbyqxmd.com/read/30069663/cytokine-production-is-differentially-modulated-in-malignant-and-non-malignant-tissues-in-st2-receptor-deficient-mice
#10
Celso Tarso Rodrigues Viana, Laura Alejandra Ariza Orellano, Luciana Xavier Pereira, Simone Aparecida de Almeida, Letícia Chinait Couto, Marcela Guimarães Takahashi de Lazari, Silvia Passos Andrade, Paula Peixoto Campos
IL-33/ST2 axis has been shown to exert both pro- and anti- effects in wound healing and tumor development. To further understand the role of this cytokine complex, we characterized comparatively the inflammatory component of a malignant tissue and non-malignant tissue in mice lacking ST2 receptor (ST2-KO). KO mice and their wild-type (WT) counterparts were either implanted subcutaneously with polyether-polyurethane sponge discs to induce non-malignant fibrovascular tissue growth or inoculated with 4T1 cells to induce mammary tumor...
August 1, 2018: Inflammation
https://www.readbyqxmd.com/read/30069662/chikusetsusaponin-v-inhibits-lps-activated-inflammatory-responses-via-sirt1-nf-%C3%AE%C2%BAb-signaling-pathway-in-raw264-7-cells
#11
Qin Yuan, Dengqing Zhang, Chaoqi Liu, Changcheng Zhang, Ding Yuan
It is becoming increasingly accepted that macrophage activation play a crucial role in many diseases associated with chronic inflammation, such as metabolic disease, including atherosclerosis, obesity, and diabetes. Recent studies have indicated that the regulation of inflammation and energy metabolism are connected together through an antagonistic crosstalk between NF-κB and SIRT1 signaling pathways. In order to investigate anti-inflammatory drugs, we investigated whether SIRT1 is implicated in the lipopolysaccharide (LPS)-stimulated NF-κB signaling pathway in macrophage RAW264...
August 1, 2018: Inflammation
https://www.readbyqxmd.com/read/30066289/inhibition-of-nf-%C3%AE%C2%BAb-reduces-renal-inflammation-and-expression-of-pepck-in-type-2-diabetic-mice
#12
Qianling Liu, Liangyan Zhang, Wei Zhang, Qiufa Hao, Wei Qiu, Yubing Wen, Haiyun Wang, Xuemei Li
Renal gluconeogenesis is markedly promoted in patients with type 2 diabetes mellitus (T2DM); however, the underlying mechanism remains largely unknown. Renal gluconeogenesis is found to be negatively regulated by insulin. T2DM is characterized by chronic and subacute inflammation; however, inflammation has been well recognized to induce insulin resistance. Therefore, this study aimed to investigate whether the enhanced renal gluconeogenesis in T2DM was partially due to the renal inflammation-mediated insulin resistance...
July 31, 2018: Inflammation
https://www.readbyqxmd.com/read/30047002/protective-effect-of-tubastatin-a-in-clp-induced-lethal-sepsis
#13
Qiufang Deng, Ting Zhao, Baihong Pan, Isabel S Dennahy, Xiuzhen Duan, Aaron M Williams, Baoling Liu, Nan Lin, Umar F Bhatti, Eric Chen, Hasan B Alam, Yongqing Li
We have found earlier that Tubastatin A (TubA), a selective inhibitor of histone deacetylase 6 (HDAC6), improves survival in a mouse model of lethal cecal ligation and puncture (CLP)-induced sepsis. However, the underlying mechanisms have not been fully established. This study sought to test the hypothesis that TubA could affect both lung and splenic functions. C57BL/6J mice were subjected to CLP, and randomized to receive either TubA (70 mg/kg) dissolved in dimethyl sulfoxide (DMSO), or DMSO alone, 1 h following CLP...
July 26, 2018: Inflammation
https://www.readbyqxmd.com/read/30047001/monoacylglycerol-lipase-inhibitor-is-safe-when-combined-with-delayed-r-tpa-administration-in-treatment-of-stroke
#14
Mohammad-Reza Rahmani, Ali Shamsizadeh, Elham Hakimizadeh, Mohammad Allahtavakoli
Administration of tissue plasminogen activator (tPA) during first 3-4.5 h after ischemic stroke is the main therapeutic strategy; however, its using after that, leads to reperfusion injury and neurotoxic effects. Additionally, inflammation has a critical role in secondary injury after late reperfusion therapy. Thus, this project was designed to explore the effects of JZL-184 (JZL), an agonist of type 1 cannabinoid receptor (CB1), on the side effects of recombinant tPA (r-tPA), which is administrated after 5 h of stroke onset in the mice middle cerebral artery occlusion (MCAO) model...
July 25, 2018: Inflammation
https://www.readbyqxmd.com/read/30047000/immunodeficiency-in-patients-with-acute-exacerbation-of-chronic-obstructive-pulmonary-disease
#15
REVIEW
Sheling Xie, Kaifei Wang, Wei Zhang, Kun Xiao, Peng Yan, Yanqin Li, Wanxue He, Yuhan Zhang, Lixin Xie
Chronic obstructive pulmonary disease (COPD), characterized by progressive airway inflammation and irreversible airflow limitation, leads to serious decline in life quality. The acute exacerbation of COPD (AECOPD) results in high healthcare costs as well as a significant mortality rate. The most common cause of acute exacerbation is infection. Immune deficiency, which induces dysfunction of anti-infection, plays an important role in the pathogenesis of acute exacerbation. As described in this review, the immune dysfunction in patients with AECOPD can be a major focus of efforts to therapeutic strategy...
July 25, 2018: Inflammation
https://www.readbyqxmd.com/read/30043119/rnai-silencing-of-hif-1%C3%AE-ameliorates-lupus-development-in-mrl-lpr-mice
#16
Wei Zhao, Changhao Wu, Lian-Ju Li, Yin-Guang Fan, Hai-Feng Pan, Jin-Hui Tao, Rui-Xue Leng, Dong-Qing Ye
Th17 cell and IL-17-mediated autoimmunity and inflammatory responses have been implicated in the development of organ damage in systemic lupus erythematosus (SLE), and new evidence suggests that hypoxia-inducible factor 1α (HIF-1α) enhances Th17 differentiation and promotes IL-17 production. However, the role of HIF-1α in the pathogenesis of lupus has not been examined. In this study, we silenced HIF-1α in vivo in a murine model of SLE to investigate whether lupus progression and the associated inflammatory pathways were affected by downregulating HIF-1α...
July 24, 2018: Inflammation
https://www.readbyqxmd.com/read/30039429/honokiol-and-magnolol-inhibit-cxcl10-and-cxcl11-production-in-il-27-stimulated-human-oral-epithelial-cells
#17
Yoshitaka Hosokawa, Ikuko Hosokawa, Kazumi Ozaki, Takashi Matsuo
Honokiol and magnolol, which are lignans isolated from Magnolia quinquepeta, have some pharmacological effects. However, the anti-inflammatory effects of honokiol and magnolol on periodontal disease are still uncertain. The aim of this study was to examine the effect of honokiol and magnolol on CXC chemokine receptor 3 (CXCR3) ligands, which are related with Th1 cell migration, production in interleukin (IL)-27-stimulated human oral epithelial cells (TR146 cells). Honokiol and magnolol inhibited CXC chemokine ligand (CXCL)10 and CXCL11 production in IL-27-stimulated TR146 cells in a dose-dependent manner...
July 24, 2018: Inflammation
https://www.readbyqxmd.com/read/30039428/changes-of-treg-th17-ratio-in-spleen-of-acute-gouty-arthritis-rat-induced-by-msu-crystals
#18
Xiao-Juan Dai, Jin-Hui Tao, Xuan Fang, Yuan Xia, Xiao-Mei Li, Yi-Ping Wang, Xiang-Pei Li
Acute gouty arthritis is the inflammation of joint tissues in the acute form due to the deposition of monosodium urate (MSU) crystals. Regulatory T cells (Tregs) and Th17 cells play an important role in the development and progression of inflammatory diseases. However, the expression and role of Tregs and Th17 cells are not clear in this disease. Here, we investigated the changes of Tregs, Th17 cells, and Treg/Th17 ratio in spleen, as well as the inflammatory cytokines in blood and joint tissue pathology in acute gouty arthritis rat induced by MSU...
July 23, 2018: Inflammation
https://www.readbyqxmd.com/read/30032472/mhtp-2-methoxy-4-7-methoxy-1-2-3-4-tetrahydroisoquinolin-1-yl-phenol-a-synthetic-alkaloid-induces-ifn-%C3%AE-production-in-murine-model-of-ovalbumin-induced-pulmonary-allergic-inflammation
#19
Laércia K D Paiva Ferreira, Larissa A M Paiva Ferreira, Adriano Francisco Alves, Fagner Carvalho Leite, Luiz A de Araújo Silva, Giciane Carvalho Vieira, Luís Cezar Rodrigues, Marcia Regina Piuvezam
MHTP [2-methoxy-4-(7-methoxy-1,2,3,4-tetrahydroisoquinolin-1-yl) phenol], a synthetic isoquinolinic alkaloid, presented anti-inflammatory activity in several experimental models of acute inflammation as lipopolysaccharide (LPS)-induced acute lung injury and phlogistic agent-induced edema and presented low preclinical toxicity. The aim of this study was to determine the MHTP effect on ovalbumin (OVA)-induced pulmonary allergic inflammation. In other to realize this study, female BALFB/c mice were sensitized and challenged with OVA (OVA group) and treated with MHTP (MHTP group) by nasal instillation...
July 22, 2018: Inflammation
https://www.readbyqxmd.com/read/30030654/high-intensity-exercise-prevents-disturbances-in-lung-inflammatory-cytokines-and-antioxidant-defenses-induced-by-lipopolysaccharide
#20
Gisele Henrique Cardoso, Débora Melissa Petry, Jéssica Jorge Probst, Luiz Felipe de Souza, Gabriella Ganguilhet, Franciane Bobinski, Adair R S Santos, Daniel Fernandes Martins, Kelly Cattelan Bonorino, Alcir Luiz Dafre, Deborah de C Hizume Kunzler
In this study, we evaluated the effects of high-intensity swimming in an experimental model of acute lung injury (ALI) induced by lipopolysaccharide (LPS) on lung inflammation and antioxidant defenses. Balb/C male mice were submitted to exercise (30 min/day, 5 days/week, for a period of 3 weeks) prior to LPS instillation in the lung. Twenty-four hours after delivery of LPS (10 μg/animal), mice were euthanized and bronchoalveolar fluid (BALF) was obtained for cell counting and analysis of cytokines by ELISA...
July 20, 2018: Inflammation
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