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Condition: Asthma

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Total 404 results found since Jan 2013.

IL-4 Induces the IL17Rb Gene Transcription in Monocytic Cells with Coordinate Autocrine IL-25 Signaling.
Abstract IL-25 and IL-4 signaling in the setting of infection or allergic responses can drive Type 2 inflammation. IL-25 requires the IL-17 receptor B (IL-17Rb) to mediate signaling through nuclear factor kappa B transcriptional activation. Despite the known coexistence of these two cytokines in the Type 2 inflammatory environment, collaborative signaling between the IL-4 and IL-25 axes is poorly explored. Here we demonstrate IL-4 induction of both IL-25 and IL-17Rb protein in human lung tissue culture, primary alveolar macrophages, and the THP-1 monocytic cell line. IL-4 treatment triggers gene transcription for ...
Source: American Journal of Respiratory Cell and Molecular Biology - April 19, 2017 Category: Molecular Biology Authors: Weathington NM, Kanth SS, Gong Q, Londino J, Hoji A, Rojas M, Trudeau J, Wenzel S, Mallampalli RK Tags: Am J Respir Cell Mol Biol Source Type: research

Preferential Generation of 15-HETE-PE Induced by IL-13 Regulates Goblet Cell Differentiation in Human Airway Epithelial Cells.
CONCLUSIONS: The results from this study confirm the central importance of 15LO1 and its primary product 15-HETE-PE to epithelial cell remodeling in HAECs. PMID: 28723225 [PubMed - as supplied by publisher]
Source: Am J Respir Cell Mol... - July 19, 2017 Category: Respiratory Medicine Authors: Zhao J, Minami Y, Etling E, Coleman JM, Lauder SN, Tyrrell V, Aldrovandi M, O'Donnell V, Claesson HE, Kagan V, Wenzel S Tags: Am J Respir Cell Mol Biol Source Type: research

G α12 Facilitates Carbachol‐Induced Shortening in Human Airway Smooth Muscle By Modulating Phosphoinositide 3‐Kinase‐Mediated Activation In A RhoA‐Dependent Manner
CONCLUSION AND IMPLICATIONSGα12 plays a crucial role in HASMC contraction via RhoA‐dependent activation of the PI3K/ROCK axis. Inhibition of RhoA activation induces bronchodilation in hPCLS, and targeting Gα12 signaling may elucidate novel therapeutic targets in asthma. Taken together, these findings provide alternative approaches to the clinical management of airway obstruction in asthma.
Source: British Journal of Pharmacology - September 18, 2017 Category: Drugs & Pharmacology Authors: Edwin J Yoo, Gaoyuan Cao, Cynthia J Koziol ‐White, Christie A Ojiaku, Krishna Sunder, Joseph A Jude, James V Michael, Hong Lam, Ivan Pushkarsky, Robert Damoiseaux, Dino Di Carlo, Kwangmi Ahn, Steven S An, Raymond B Penn, Reynold A Panettieri Tags: RESEARCH PAPER Source Type: research

Resistin upregulates MUC5AC/B mucin gene expression in human airway epithelial cells.
Abstract Adipokines, a group of proteins including leptin, visfatin, resistin, and adiponectin, are produced by adipocytes. Among adipokines, resistin is implicated in insulin resistance and inflammatory response modulation. Mucus hypersecretion has been greatly linked to airway diseases, such as asthma, chronic obstructive pulmonary disease, and rhinosinusitis. Increasing evidence has indicated that adipokines, such as leptin and visfatin, play important regulatory roles in various biological processes involved in mucus secretion. However, the effects of resistin on mucin expression in human airway epithelial cel...
Source: Biochemical and Biophysical Research communications - March 28, 2018 Category: Biochemistry Authors: Kwak S, Kim YD, Na HG, Bae CH, Song SY, Choi YS Tags: Biochem Biophys Res Commun Source Type: research

Estrogen receptor beta signaling inhibits PDGF induced human airway smooth muscle proliferation
In this study, we evaluated the effect of selective ERα and ERβ modulators on platelet-derived growth factor (PDGF)-stimulated ASM proliferation and the mechanisms involved. Asthmatic and non-asthmatic primary human ASM cells were treated with PDGF, 17β-estradiol, ERα-agonist and/or ERβ-agonist and/or G-protein-coupled estrogen receptor 30 (GPR30/GPER) agonist and proliferation was measured using MTT and CyQuant assays followed by cell cycle analysis. Transfection of small interfering RNA (siRNA) ERα and ERβ significantly altered the human ASM proliferation. The specificity of siRNA transfection was confirmed by Wes...
Source: Molecular and Cellular Endocrinology - April 20, 2018 Category: Endocrinology Source Type: research

TRPV1 Blocking Alleviates Airway Inflammation and Remodeling in a Chronic Asthma Murine Model.
CONCLUSIONS: Treatment directed at TRPV1 significantly alleviated AHR, airway inflammation, and remodeling in a chronic asthma murine model. The TRPV1 receptor can be a potential drug target for chronic bronchial asthma. PMID: 29676068 [PubMed]
Source: Allergy, Asthma and Immunology Research - April 22, 2018 Category: Allergy & Immunology Tags: Allergy Asthma Immunol Res Source Type: research

A hyaluronan-based nanosystem enables combined anti-inflammation of mTOR gene silencing and pharmacotherapy
In this study, we synthesized a hyaluronan-based ROS-sensitive polymer which was expected to release loaded chemical drugs in inflammatory environment and further developed a stable and nontoxic co-delivery nanosystem of siRNA targeting autophagy suppressive gene and chemotherapeutic agents. The in vitro transfection study of this nanosystem revealed improved intracellular accumulation of siRNA and excellent gene silencing efficacy comparable to that of conventional cationic liposome. Moreover, the mRNA expression of inflammatory cytokines was remarkably decreased by our nanosystem. Considering its biocompatibility, transf...
Source: Carbohydrate Polymers - May 3, 2018 Category: Biomedical Science Source Type: research

A hyaluronan-based nanosystem enables combined anti-inflammation of mTOR gene silencing and pharmacotherapy.
In this study, we synthesized a hyaluronan-based ROS-sensitive polymer which was expected to release loaded chemical drugs in inflammatory environment and further developed a stable and nontoxic co-delivery nanosystem of siRNA targeting autophagy suppressive gene and chemotherapeutic agents. The in vitro transfection study of this nanosystem revealed improved intracellular accumulation of siRNA and excellent gene silencing efficacy comparable to that of conventional cationic liposome. Moreover, the mRNA expression of inflammatory cytokines was remarkably decreased by our nanosystem. Considering its biocompatibility, transf...
Source: Atherosclerosis - May 31, 2018 Category: Cardiology Authors: Hou C, Bai H, Wang Z, Qiu Y, Kong LL, Sun F, Wang D, Yin H, Zhang X, Mu H, Duan J Tags: Carbohydr Polym Source Type: research

Estrogen receptor beta signaling inhibits PDGF induced human airway smooth muscle proliferation
In this study, we evaluated the effect of selective ERα and ERβ modulators on platelet-derived growth factor (PDGF)-stimulated ASM proliferation and the mechanisms involved. Asthmatic and non-asthmatic primary human ASM cells were treated with PDGF, 17β-estradiol, ERα-agonist and/or ERβ-agonist and/or G-protein-coupled estrogen receptor 30 (GPR30/GPER) agonist and proliferation was measured using MTT and CyQuant assays followed by cell cycle analysis. Transfection of small interfering RNA (siRNA) ERα and ERβ significantly altered the human ASM proliferation. The specificity of siRNA transfection was confirmed by Wes...
Source: Molecular and Cellular Endocrinology - July 5, 2018 Category: Endocrinology Source Type: research

German Cockroach Extract Induces Matrix Metalloproteinase-1 Expression, Leading to Tight Junction Disruption in Human Airway Epithelial Cells.
CONCLUSION: GCE treatment increases MMP1 expression, leading to tight junction disruption, which is transcriptionally regulated and influenced by the ERK/MAPK pathway in airway epithelial cells. These findings may contribute to developing novel therapeutic strategies for airway diseases. PMID: 30450857 [PubMed - in process]
Source: Yonsei Medical Journal - November 21, 2018 Category: Universities & Medical Training Authors: Lee KE, Jee HM, Hong JY, Kim MN, Oh MS, Kim YS, Kim KW, Kim KE, Sohn MH Tags: Yonsei Med J Source Type: research

Cryptotanshinone Attenuates Airway Remodeling by Inhibiting Crosstalk Between Tumor Necrosis Factor-Like Weak Inducer of Apoptosis and Transforming Growth Factor Beta 1 Signaling Pathways in Asthma
The study is to investigate the effect of cryptotanshinone (CTS) on airway remodeling and the possible mechanism. Male BALB/c mice were pretreated with CTS or dexamethasone 30 min before nebulized inhalation of ovalbumin (OVA). CTS significantly inhibited OVA-induced increases of eosinophils and neutrophils infiltration of bronchoalveolar lavage fluids (BALFs), reduced airway resistance in asthmatic mice, decreased the accumulation of inflammatory cells, the hyperplasia of goblet cells and the deposition of collagen in asthmatic mice lung tissue, as well as markedly attenuated the leakage of inflammatory cells and the leve...
Source: Frontiers in Pharmacology - November 10, 2019 Category: Drugs & Pharmacology Source Type: research

Mammalian target of rapamycin and p70S6K mediate thrombin-induced nuclear factor- κB activation and IL-8/CXCL8 release in human lung epithelial cells.
In conclusion, these results indicate that thrombin initiates the Akt-dependent mTOR/p70S6K signaling pathway to promote p300 phosphorylation and NF-κB activation and finally induces IL-8/CXCL8 release in human lung epithelial cells. PMID: 31863766 [PubMed - as supplied by publisher]
Source: European Journal of Pharmacology - December 17, 2019 Category: Drugs & Pharmacology Authors: Lin CH, Shih CH, Jiang CP, Wen HC, Cheng WH, Chen BC Tags: Eur J Pharmacol Source Type: research

Respiratory Syncytial Virus Infection of Human Lung Fibroblasts Induces a Hyaluronan-Enriched Extracellular Matrix That Binds Mast Cells and Enhances Expression of Mast Cell Proteases
Human lung fibroblasts (HLFs) treated with the viral mimetic polyinosine-polycytidylic acid (poly I:C) form an extracellular matrix (ECM) enriched in hyaluronan (HA) that avidly binds monocytes and lymphocytes. Mast cells are important innate immune cells in both asthma and acute respiratory infections including respiratory syncytial virus (RSV); however, the effect of RSV on HA dependent mast cell adhesion and/or function is unknown. To determine if RSV infection of HLFs leads to the formation of a HA-enriched ECM that binds and enhances mast cell activity primary HLFs were infected with RSV for 48 h prior to leukocyte bi...
Source: Frontiers in Immunology - January 27, 2020 Category: Allergy & Immunology Source Type: research

Orosomucoid Like 3 (ORMDL3) Supports Rhinovirus Replication in Human Epithelial Cells.
In this study, we investigated the impact of one of the 17q21 encoded genes, ORMDL3 on RV replication in human epithelial cells. ORMDL3 knockdown inhibited RV-A16 replication in HeLa, BEAS-2B, A549, NCI-H358 epithelial cell lines, and primary nasal and bronchial epithelial cells. Inhibition varied by RV species, as both minor and major group RV-A subtypes, RV-B52 and RV-C2 were inhibited, but not RV-C15 or RV-C41. ORMDL3 siRNA did not affect expression of the major group RV-A receptor ICAM-1 or initial internalization of RV-A16. The two major outcomes of ORMDL3 activity, serine palmitoyl-CoA transferase (SPT) inhibition an...
Source: Am J Respir Cell Mol... - February 19, 2020 Category: Respiratory Medicine Authors: Liu Y, Bochkov YA, Eickhoff JC, Hu T, Zumwalde NA, Tan JW, Lopez C, Fichtinger PS, Reddy TR, Overmyer KA, Gumperz JE, Coon J, Mathur SK, Gern JE, Smith JA Tags: Am J Respir Cell Mol Biol Source Type: research