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Source: Inflammation

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Total 78 results found since Jan 2013.

Exosomes from iPSCs Delivering siRNA Attenuate Intracellular Adhesion Molecule-1 Expression and Neutrophils Adhesion in Pulmonary Microvascular Endothelial Cells
In this study, we reprogrammed urine exfoliated renal epithelial cells into human induced pluripotent stem cells (huiPSCs) and purified the exosomes (Exo) from huiPSCs as RNAi delivery system. Through choosing the episomal system to deliver transcription factors, we obtained a non-integrating huiPSCs. Experiments in bothvitro andvivo demonstrated that these huiPSCs possess the pluripotent properties. The exosomes of huiPSCs isolated by differential centrifugation were visualized by transmission electron microscopy (TEM) showing a typical exosomal appearance with an average diameter of 122  nm. Immunoblotting confirmed the...
Source: Inflammation - December 20, 2016 Category: Allergy & Immunology Source Type: research

Nanoparticle-Delivered IRF5 siRNA Facilitates M1 to M2 Transition, Reduces Demyelination and Neurofilament Loss, and Promotes Functional Recovery After Spinal Cord Injury in Mice
ABSTRACT Macrophage activation and persistent inflammation contribute to the pathogenesis of spinal cord injury (SCI), and different phenotypes of macrophages play diverse roles in the pathological process of SCI. After SCI, there is an acute phase of alternatively activated (M2) macrophage infiltration, followed by a long-lasting phase of classically activated (M1) macrophage accumulation in the wound. The long-lasting predominance of M1 macrophages may derail healing and compromise organ functions. Based on the previous findings that the transcription factor interferon regulatory factor 5 (IRF5) up-regulates gen...
Source: Inflammation - July 18, 2016 Category: Allergy & Immunology Source Type: research

Adenovirus-Mediated Small Interfering RNA Targeting TAK1 Ameliorates Joint Inflammation with Collagen-Induced Arthritis in Mice
AbstractTransforming growth factor β-activated kinase-1 (TAK1) is a key upstream kinase in cell signaling during inflammation, which regulates the expression of inflammatory mediators. Small interfering RNA (siRNA) against TAK1 offers promise as a potential therapeutic strategy in immune-mediated inflammatory disorder including rheu matoid arthritis. Here, we are to evaluate the therapeutic effects of intra-articular administration of adenoviral-mediated siRNA against TAK1 (ad-siRNA-TAK1) on collagen-induced arthritis (CIA) in mice. Ad-siRNA-TAK1 was constructed. The murine RAW 264.7 macrophages were infected with ad-siRN...
Source: Inflammation - February 20, 2017 Category: Allergy & Immunology Source Type: research

Kindlin-2 Mediates Lipopolysaccharide-Induced Acute Lung Injury Partially via Pyroptosis in Mice
In this study, we found that the concentration of kindlin-2 was elevated in the lungs of ALI mice. The specific deletion of kindlin-2 by kindlin-2 siRNA attenuated the severity of lung injury, which was demonstrated by the reduced number of pro-inflammatory cells in bronchoalveolar lavage fluid and lung wet/dry weight ratio, and ameliorated pathologic changes in the lungs of ALI mice. Furthermore, kindlin-2 siRNA decreased the mRNA levels of pro-inflammatory factors (IL-1 β, IL-6, and TNF-α) and the protein levels of pyroptosis-related proteins. In vitro studies confirmed that LPS + ATP promoted the expressions of p...
Source: Inflammation - February 8, 2022 Category: Allergy & Immunology Source Type: research

Activation of Nicotinic Receptors Inhibits TNF-α-Induced Production of Pro-inflammatory Mediators Through the JAK2/STAT3 Signaling Pathway in Fibroblast-Like Synoviocytes
In conclusion, nicotine has an anti-inflammatory effect on RA by downregulating production of IL-6 and MCP-1 in FLSs, and this is mediated through activation of the JAK2–STAT3 signal pathway.
Source: Inflammation - January 23, 2015 Category: Allergy & Immunology Source Type: research

Overexpression and Potential Regulatory Role of IL-17F in Pathogenesis of Chronic Periodontitis
This study indicates that IL-17F may be involved in pathogenesis of periodontitis like IL-17A. The role of IL-17F in disease pathogenesis needs to be further investigated.
Source: Inflammation - May 8, 2015 Category: Allergy & Immunology Source Type: research

Ox-LDL Upregulates IL-6 Expression by Enhancing NF-κB in an IGF2-Dependent Manner in THP-1 Macrophages
Abstract Interleukin 6 (IL-6) is a pro-inflammatory cytokine that is well established as a vital factor in determining the risk of coronary heart disease and pathogenesis of atherosclerosis. Moreover, accumulating evidences have shown that oxidized low-density lipoprotein (ox-LDL) can promote IL-6 expression in macrophages. Nevertheless, the underlying mechanism of how ox-LDL upregulates IL-6 expression remains largely unexplained. We found that the expression of insulin-like growth factor 2 (IGF2), nuclear factor kappa B (NF-κB), and IL-6 was upregulated at both the messenger RNA (mRNA) and protein levels in a d...
Source: Inflammation - June 12, 2015 Category: Allergy & Immunology Source Type: research

Wnt1 Participates in Inflammation Induced by Lipopolysaccharide Through Upregulating Scavenger Receptor A and NF-kB
Abstract The study investigated the role of wnt1 in the inflammatory response initiated by lipolysaccharide (LPS), and analyzed the association between wnt1, NF-KB, and inflammatory factors. THP-1 cells were activated with phorbol-12-myristate-13-acetate (PMA) and treated with LPS to induce inflammation. THP-1 cells were transfected with wnt1siRNA and overexpression plasmid to explore the relationship among wnt1, SRA, and NF-KB. Inhibitor of β-catenin and siRNA of FZD1were used to investigate the signaling events involved in SRA activation induced by wnt1. Levels of NF-kB protein and inflammatory cytokines were ...
Source: Inflammation - July 8, 2015 Category: Allergy & Immunology Source Type: research

Enhanced p62 Is Responsible for Mitochondrial Pathway-Dependent Apoptosis and Interleukin-1β Production at the Early Phase by Monosodium Urate Crystals in Murine Macrophage
Abstract The aim of this study was to clarify the role of p62-dependent mitochondrial apoptosis in the initiation of monosodium urate (MSU) crystal-induced inflammation in macrophages. The induction of mitochondrial apoptosis in RAW 264.7 murine macrophages by MSU crystals was measured using western blotting and quantitative real-time polymerase chain reaction for Bax, caspase-3, caspase-9, or PARP1, and by flow cytometric analysis. Immunoprecipitation and western blotting was applied to detect ubiquitination of p62, TRAF6, and caspase-9. Mitochondrial apoptosis, reactive oxygen species (ROS) generation, and cell ...
Source: Inflammation - June 6, 2016 Category: Allergy & Immunology Source Type: research

PGRN Suppresses Inflammation and Promotes Autophagy in Keratinocytes Through the Wnt/β-Catenin Signaling Pathway
Abstract Psoriasis is a chronic, immune-mediated inflammatory skin disease that has a major impact on patients’ quality of life. Progranulin (PGRN) is highly expressed in skin diseases and plays an important role in inflammation response and autophagy. However, the function of PGRN in the immune system and autophagy in psoriasis has not been clearly identified and elaborated on. Thus, this study aimed to investigate the role of PGRN on the inflammatory and autophagy process underlying inflammation in HaCaT cells. We showed that PGRN was markedly highly expressed in psoriasis lesions and inflammatory HaCaT cells...
Source: Inflammation - July 20, 2016 Category: Allergy & Immunology Source Type: research

PGRN Suppresses Inflammation and Promotes Autophagy in Keratinocytes Through the Wnt/ β-Catenin Signaling Pathway
Abstract Psoriasis is a chronic, immune-mediated inflammatory skin disease that has a major impact on patients ’ quality of life. Progranulin (PGRN) is highly expressed in skin diseases and plays an important role in inflammation response and autophagy. However, the function of PGRN in the immune system and autophagy in psoriasis has not been clearly identified and elaborated on. Thus, this study aimed to investigate the role of PGRN on the inflammatory and autophagy process underlying inflammation in HaCaT cells. We showed that PGRN was markedly highly expressed in psoriasis lesions and inflammatory HaCaT cells. Specif...
Source: Inflammation - July 21, 2016 Category: Allergy & Immunology Source Type: research

Enhanced p62 Is Responsible for Mitochondrial Pathway-Dependent Apoptosis and Interleukin-1 β Production at the Early Phase by Monosodium Urate Crystals in Murine Macrophage
AbstractThe aim of this study was to clarify the role of p62-dependent mitochondrial apoptosis in the initiation of monosodium urate (MSU) crystal-induced inflammation in macrophages. The induction of mitochondrial apoptosis in RAW 264.7 murine macrophages by MSU crystals was measured using western blotting and quantitative real-time polymerase chain reaction for Bax, caspase-3, caspase-9, or PARP1, and by flow cytometric analysis. Immunoprecipitation and western blotting was applied to detect ubiquitination of p62, TRAF6, and caspase-9. Mitochondrial apoptosis, reactive oxygen species (ROS) generation, and cell proliferat...
Source: Inflammation - September 15, 2016 Category: Allergy & Immunology Source Type: research

Role of Leptin and SOCS3 in Inhibiting the Type I Interferon Response During Obesity
AbstractObesity provokes an imbalance in the immune system, including an aberrant type I interferon response during some viral infections and after TLR stimulation. SOCS3 overexpression and altered systemic leptin levels could be responsible for the reduced type I interferon production in people with obesity and, eventually, significantly increase the risk of viral infection. The aim of this study was to determine whether SOCS3- and leptin-induced tolerance are responsible for the reduced type I interferon production in people with obesity. SOCS3 overexpression in PBMCs from people with obesity was inhibited with the small...
Source: Inflammation - October 3, 2016 Category: Allergy & Immunology Source Type: research

AGEs Decreased SIRT3 Expression and SIRT3 Activation Protected AGEs-Induced EPCs ’ Dysfunction and Strengthened Anti-oxidant Capacity
AbstractAdvanced glycation end products (AGEs) have been confirmed to induce dysfunction in endothelial progenitor cells (EPCs) and play key roles in pathogenesis of diabetes-related vascular complications. The major function of sirtuin 3 (SIRT3) is to orchestrate oxidative metabolism and control reactive oxygen species (ROS) homeostasis, which are more closely related to EPCs ’ dysfunction. Our study therefore was designed to explore the role of SIRT3 on AGEs-induced EPCs dysfunction of. EPCs isolated from healthy adults were stimulated with AGEs and the expression of SIRT3 was assessed. Then, EPCs transfected with ad-S...
Source: Inflammation - December 28, 2016 Category: Allergy & Immunology Source Type: research