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Hernandez-Lara MA, Richard J, Deshpande DA. Diacylglycerol kinase is a keystone regulator of signaling relevant to the pathophysiology of asthma. Am J Physiol Lung Cell Mol Physiol 2024; 327:L3-L18. [PMID: 38742284 DOI: 10.1152/ajplung.00091.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 04/05/2024] [Accepted: 04/23/2024] [Indexed: 05/16/2024] Open
Abstract
Signal transduction by G protein-coupled receptors (GPCRs), receptor tyrosine kinases (RTKs) and immunoreceptors converge at the activation of phospholipase C (PLC) for the hydrolysis of phosphatidylinositol 4,5-bisphosphate (PIP2) into inositol 1,4,5-trisphosphate (IP3) and diacylglycerol (DAG). This is a point for second-messenger bifurcation where DAG via protein kinase C (PKC) and IP3 via calcium activate distinct protein targets and regulate cellular functions. IP3 signaling is regulated by multiple calcium influx and efflux proteins involved in calcium homeostasis. A family of lipid kinases belonging to DAG kinases (DGKs) converts DAG to phosphatidic acid (PA), negatively regulating DAG signaling and pathophysiological functions. PA, through a series of biochemical reactions, is recycled to produce new molecules of PIP2. Therefore, DGKs act as a central switch in terminating DAG signaling and resynthesis of membrane phospholipids precursor. Interestingly, calcium and PKC regulate the activation of α and ζ isoforms of DGK that are predominantly expressed in airway and immune cells. Thus, DGK forms a feedback and feedforward control point and plays a crucial role in fine-tuning phospholipid stoichiometry, signaling, and functions. In this review, we discuss the previously underappreciated complex and intriguing DAG/DGK-driven mechanisms in regulating cellular functions associated with asthma, such as contraction and proliferation of airway smooth muscle (ASM) cells and inflammatory activation of immune cells. We highlight the benefits of manipulating DGK activity in mitigating salient features of asthma pathophysiology and shed light on DGK as a molecule of interest for heterogeneous diseases such as asthma.
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Affiliation(s)
- Miguel A Hernandez-Lara
- Department of Medicine, Center for Translational Medicine, Jane & Leonard Korman Respiratory Institute, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States
| | - Joshua Richard
- Department of Medicine, Center for Translational Medicine, Jane & Leonard Korman Respiratory Institute, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States
| | - Deepak A Deshpande
- Department of Medicine, Center for Translational Medicine, Jane & Leonard Korman Respiratory Institute, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States
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Mendes EP, Ianzer D, Peruchetti DB, Santos RAS, Vieira MAR. Interaction of Angiotensin-(1-7) with kinins in the kidney circulation: Role of B 1 receptors. Peptides 2024; 179:171246. [PMID: 38821119 DOI: 10.1016/j.peptides.2024.171246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 04/19/2024] [Accepted: 05/22/2024] [Indexed: 06/02/2024]
Abstract
Changes in renal hemodynamics impact renal function during physiological and pathological conditions. In this context, renal vascular resistance (RVR) is regulated by components of the Renin-Angiotensin System (RAS) and the Kallikrein-Kinin System (KKS). However, the interaction between these vasoactive peptides on RVR is still poorly understood. Here, we studied the crosstalk between angiotensin-(1-7) and kinins on RVR. The right kidneys of Wistar rats were isolated and perfused in a closed-circuit system. The perfusion pressure and renal perfusate flow were continuously monitored. Ang-(1-7) (1.0-25.0 nM) caused a sustained, dose-dependent reduction of relative RVR (rRVR). This phenomenon was sensitive to 10 nM A-779, a specific Mas receptor (MasR) antagonist. Bradykinin (BK) promoted a sustained and transient reduction in rRVR at 1.25 nM and 125 nM, respectively. The transient effect was abolished by 4 μM des-Arg9-Leu8-bradykinin (DALBK), a specific kinin B1 receptor (B1R) antagonist. Accordingly, des-Arg9-bradykinin (DABK) 1 μM (a B1R agonist) increased rRVR. Interestingly, pre-perfusion of Ang-(1-7) changed the sustained reduction of rRVR triggered by 1.25 nM BK into a transient effect. On the other hand, pre-perfusion of Ang-(1-7) primed and potentiated the DABK response, this mechanism being sensitive to A-779 and DALBK. Binding studies performed with CHO cells stably transfected with MasR, B1R, and kinin B2 receptor (B2R) showed no direct interaction between Ang-(1-7) with B1R or B2R. In conclusion, our findings suggest that Ang-(1-7) differentially modulates kinin's effect on RVR in isolated rat kidneys. These results help to expand the current knowledge regarding the crosstalk between the RAS and KKS complex network in RVR.
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Affiliation(s)
| | - Danielle Ianzer
- Department of Physiological Sciences, ICB, UFG, Goiania, GO, Brazil; National Institute of Science and Technology in Nanobiopharmaceutics, INCT-Nanobiofar, Belo Horizonte, MG, Brazil
| | - Diogo Barros Peruchetti
- Department of Physiology and Biophysics, ICB, UFMG, Belo Horizonte, MG, Brazil; National Institute of Science and Technology in Nanobiopharmaceutics, INCT-Nanobiofar, Belo Horizonte, MG, Brazil
| | - Robson Augusto Souza Santos
- Department of Physiology and Biophysics, ICB, UFMG, Belo Horizonte, MG, Brazil; National Institute of Science and Technology in Nanobiopharmaceutics, INCT-Nanobiofar, Belo Horizonte, MG, Brazil
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Yang Y, Ma T, Zhang J, Tang Y, Tang M, Zou C, Zhang Y, Wu M, Hu X, Liu H, Zhang Q, Liu Y, Li H, Li JS, Liu Z, Li J, Li T, Zhou X. An integrated multi-omics analysis of identifies distinct molecular characteristics in pulmonary infections of Pseudomonas aeruginosa. PLoS Pathog 2023; 19:e1011570. [PMID: 37643174 PMCID: PMC10464988 DOI: 10.1371/journal.ppat.1011570] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 07/21/2023] [Indexed: 08/31/2023] Open
Abstract
Pseudomonas aeruginosa (P. aeruginosa) can cause severe acute infections, including pneumonia and sepsis, and cause chronic infections, commonly in patients with structural respiratory diseases. However, the molecular and pathophysiological mechanisms of P. aeruginosa respiratory infection are largely unknown. Here, we performed assays for transposase-accessible chromatin using sequencing (ATAC-seq), transcriptomics, and quantitative mass spectrometry-based proteomics and ubiquitin-proteomics in P. aeruginosa-infected lung tissues for multi-omics analysis, while ATAC-seq and transcriptomics were also examined in P. aeruginosa-infected mouse macrophages. To identify the pivotal factors that are involved in host immune defense, we integrated chromatin accessibility and gene expression to investigate molecular changes in P. aeruginosa-infected lung tissues combined with proteomics and ubiquitin-proteomics. Our multi-omics investigation discovered a significant concordance for innate immunological and inflammatory responses following P. aeruginosa infection between hosts and alveolar macrophages. Furthermore, we discovered that multi-omics changes in pioneer factors Stat1 and Stat3 play a crucial role in the immunological regulation of P. aeruginosa infection and that their downstream molecules (e.g., Fas) may be implicated in both immunosuppressive and inflammation-promoting processes. Taken together, these findings indicate that transcription factors and their downstream signaling molecules play a critical role in the mobilization and rebalancing of the host immune response against P. aeruginosa infection and may serve as potential targets for bacterial infections and inflammatory diseases, providing insights and resources for omics analyses.
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Affiliation(s)
- Yang Yang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Teng Ma
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Jun Zhang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Yu Tang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Miao Tang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Chaoyu Zou
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Yige Zhang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Mingbo Wu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Xueli Hu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Huan Liu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Qianhua Zhang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Yilin Liu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Hongliang Li
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Jing Shirley Li
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Zhuochong Liu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Jing Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Taiwen Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xikun Zhou
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
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Hernandez-Lara MA, Yadav SK, Conaway S, Shah SD, Penn RB, Deshpande DA. Crosstalk between diacylglycerol kinase and protein kinase A in the regulation of airway smooth muscle cell proliferation. Respir Res 2023; 24:155. [PMID: 37301818 PMCID: PMC10257838 DOI: 10.1186/s12931-023-02465-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 05/26/2023] [Indexed: 06/12/2023] Open
Abstract
BACKGROUND Diacylglycerol kinase (DGK) regulates intracellular signaling and functions by converting diacylglycerol (DAG) into phosphatidic acid. We previously demonstrated that DGK inhibition attenuates airway smooth muscle (ASM) cell proliferation, however, the mechanisms mediating this effect are not well established. Given the capacity of protein kinase A (PKA) to effect inhibition of ASM cells growth in response to mitogens, we employed multiple molecular and pharmacological approaches to examine the putative role of PKA in the inhibition of mitogen-induced ASM cell proliferation by the small molecular DGK inhibitor I (DGK I). METHODS We assayed cell proliferation using CyQUANT™ NF assay, protein expression and phosphorylation using immunoblotting, and prostaglandin E2 (PGE2) secretion by ELISA. ASM cells stably expressing GFP or PKI-GFP (PKA inhibitory peptide-GFP chimera) were stimulated with platelet-derived growth factor (PDGF), or PDGF + DGK I, and cell proliferation was assessed. RESULTS DGK inhibition reduced ASM cell proliferation in cells expressing GFP, but not in cells expressing PKI-GFP. DGK inhibition increased cyclooxygenase II (COXII) expression and PGE2 secretion over time to promote PKA activation as demonstrated by increased phosphorylation of (PKA substrates) VASP and CREB. COXII expression and PKA activation were significantly decreased in cells pre-treated with pan-PKC (Bis I), MEK (U0126), or ERK2 (Vx11e) inhibitors suggesting a role for PKC and ERK in the COXII-PGE2-mediated activation of PKA signaling by DGK inhibition. CONCLUSIONS Our study provides insight into the molecular pathway (DAG-PKC/ERK-COXII-PGE2-PKA) regulated by DGK in ASM cells and identifies DGK as a potential therapeutic target for mitigating ASM cell proliferation that contributes to airway remodeling in asthma.
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Affiliation(s)
- Miguel A. Hernandez-Lara
- Department of Medicine, Center for Translational Medicine, Jane & Leonard Korman Respiratory Institute, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107 USA
| | - Santosh Kumar Yadav
- Department of Medicine, Center for Translational Medicine, Jane & Leonard Korman Respiratory Institute, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107 USA
| | - Stanley Conaway
- Department of Medicine, Center for Translational Medicine, Jane & Leonard Korman Respiratory Institute, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107 USA
| | - Sushrut D. Shah
- Department of Medicine, Center for Translational Medicine, Jane & Leonard Korman Respiratory Institute, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107 USA
| | - Raymond B. Penn
- Department of Medicine, Center for Translational Medicine, Jane & Leonard Korman Respiratory Institute, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107 USA
| | - Deepak A. Deshpande
- Department of Medicine, Center for Translational Medicine, Jane & Leonard Korman Respiratory Institute, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107 USA
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Ou Y, You Z, Yao M, Cao Y, Xue X, Chen M, Wu R, Gan L, Li D, Wu P, Xu X, Wong W, Wong VKW, Liu W, Ye J, Jin J. Naproxen-Derived New Compound Inhibits the NF-κB, MAPK and PI3K/Akt Signaling Pathways Synergistically with Resveratrol in RAW264.7 Cells. Molecules 2023; 28:molecules28083395. [PMID: 37110629 PMCID: PMC10146875 DOI: 10.3390/molecules28083395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/23/2023] [Accepted: 04/04/2023] [Indexed: 04/29/2023] Open
Abstract
Naproxen is widely used for anti-inflammatory treatment but it can lead to serious side effects. To improve the anti-inflammatory activity and safety, a novel naproxen derivative containing cinnamic acid (NDC) was synthesized and used in combination with resveratrol. The results showed that the combination of NDC and resveratrol at different ratios have a synergistic anti-inflammatory efficacy in RAW264.7 macrophage cells. It was indicated that the combination of NDC and resveratrol at a ratio of 2:1 significantly inhibited the expression of carbon monoxide (NO), tumor necrosis factor α (TNF-α), interleukin 6 (IL-6), induced nitric oxide synthase (iNOS), cyclooxygenase 2 (COX-2) and reactive oxygen species (ROS) without detectable side effects on cell viability. Further studies revealed that these anti-inflammatory effects were mediated by the activation of nuclear factor kappa-B (NF-κB), mitogen-activated protein kinase (MAPK) and phosphoinositide-3 kinase (PI3K)/protein kinase B (Akt) signaling pathways, respectively. Taken together, these results highlighted the synergistic NDC and resveratrol anti-inflammatory activity that could be further explored as a strategy for the treatment of inflammatory disease with an improved safety profile.
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Affiliation(s)
- Yi Ou
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Zonglin You
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Min Yao
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Yingfan Cao
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Xiu Xue
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Min Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Rihui Wu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Lishe Gan
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Dongli Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Panpan Wu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Xuetao Xu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Wingleung Wong
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Vincent Kam Wai Wong
- Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau 999078, China
| | - Wenfeng Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Jiming Ye
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
- Lipid Biology and Metabolic Disease Research Group, School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC 3000, Australia
| | - Jingwei Jin
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
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Yu S, Peng W, Qiu F, Zhang G. Research progress of astragaloside IV in the treatment of atopic diseases. Biomed Pharmacother 2022; 156:113989. [DOI: 10.1016/j.biopha.2022.113989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 10/28/2022] [Accepted: 11/05/2022] [Indexed: 11/09/2022] Open
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Liao W, Liu W, Yan Y, Li L, Tong J, Huang Y, Guo S, Jiang W, Fu S. Hylocereus undatus flower extract suppresses OVA-induced allergic asthma in BALb/c mice by reducing airway inflammation and modulating gut microbiota. Biomed Pharmacother 2022; 153:113476. [DOI: 10.1016/j.biopha.2022.113476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/14/2022] [Accepted: 07/24/2022] [Indexed: 11/29/2022] Open
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Ding J, WenjuanYang, Jiang Y, Ji J, Zhang J, Wu L, Feng J, Zheng Y, Li Y, Cheng Z, Yu Q, Wu J, Li J, Chen K, Guo C. Cordycepin Protects against Hepatic Ischemia/Reperfusion Injury via Inhibiting MAPK/NF- κB Pathway. Mediators Inflamm 2022; 2022:5676256. [PMID: 36518880 PMCID: PMC9744625 DOI: 10.1155/2022/5676256] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/25/2022] [Accepted: 07/07/2022] [Indexed: 11/02/2023] Open
Abstract
Hepatic ischemia/reperfusion injury (HIRI) is a common complication of liver surgery requiring hepatic disconnection, such as hepatectomy and liver transplantation. The aim of this study was to investigate the effects of cordycepin on HIRI and to elucidate the underlying mechanisms. Balb/c mice were randomly divided into six groups: a normal control group, sham group, H-cordycepin group, HIRI group, L-cordycepin (25 mg/kg) + HIRI group, and H-cordycepin (50 mg/kg) + HIRI group. Mice were subjected to I/R, and cordycepin was intragastrically administered for seven consecutive days before surgery. Orbital blood and liver specimens were collected at 6 and 24 h after HIRI. Serum levels of ALT and AST were decreased in the cordycepin pretreatment groups. Notably, cordycepin attenuated the inflammatory response and the production of proapoptosis proteins, while increasing expression of antiapoptosis proteins and decreasing expression of autophagy-linked proteins. Furthermore, cordycepin inhibited activation of the MAPK/NF-κB signaling pathway. Collectively, these results indicate that cordycepin pretreatment ameliorated hepatocyte injury caused by HIRI. As compared with the HIRI group, cordycepin pretreatment mitigated the inflammatory response and inhibited apoptosis and autophagy via regulation of the MAPK/NF-κB signaling pathway.
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Affiliation(s)
- Jiameng Ding
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - WenjuanYang
- Department of Emergency, Shanghai Tenth People's Hospital, School of Medicine, Shanghai 200072, China
| | - Yuhui Jiang
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Jie Ji
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Jie Zhang
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Liwei Wu
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Jiao Feng
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Yuanyuan Zheng
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Yan Li
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Ziqi Cheng
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Qiang Yu
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Jianye Wu
- Department of Gastroenterology, Putuo People's Hospital, Tongji University, Shanghai 200060, China
| | - Jingjing Li
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
- Department of Gastroenterology, Putuo People's Hospital, Tongji University, Shanghai 200060, China
| | - Kan Chen
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Chuanyong Guo
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
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Thrombin Induces COX-2 and PGE2 Expression via PAR1/PKCalpha/MAPK-Dependent NF-kappaB Activation in Human Tracheal Smooth Muscle Cells. Mediators Inflamm 2022; 2022:4600029. [PMID: 35497094 PMCID: PMC9042634 DOI: 10.1155/2022/4600029] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 03/03/2022] [Indexed: 12/21/2022] Open
Abstract
The inflammation of the airway and lung could be triggered by upregulation cyclooxygenase (COX)-2 and prostaglandin E2 (PGE2) induced by various proinflammatory factors. COX-2 induction by thrombin has been shown to play a vital role in various inflammatory diseases. However, in human tracheal smooth muscle cells (HTSMCs), how thrombin enhanced the levels of COX-2/PGE2 is not completely characterized. Thus, in this study, the levels of COX-2 expression and PGE2 synthesis induced by thrombin were determined by Western blot, promoter-reporter assay, real-time PCR, and ELISA kit. The various signaling components involved in the thrombin-mediated responses were differentiated by transfection with siRNAs and selective pharmacological inhibitors. The role of NF-κB was assessed by a chromatin immunoprecipitation (ChIP) assay, immunofluorescent staining, as well as Western blot. Our results verified that thrombin markedly triggered PGE2 secretion via COX-2 upregulation which were diminished by the inhibitor of thrombin (PPACK), PAR1 (SCH79797), Gi/o protein (GPA2), Gq protein (GPA2A), PKCα (Gö6976), p38 MAPK (SB202190), JNK1/2 (SP600125), MEK1/2 (U0126), or NF-κB (helenalin) and transfection with siRNA of PAR1, Gqα, Giα, PKCα, JNK2, p38, p42, or p65. Moreover, thrombin induced PAR1-dependent PKCα phosphorylation in HTSMCs. We also observed that thrombin induced p38 MAPK, JNK1/2, and p42/p44 MAPK activation through a PAR1/PKCα pathway. Thrombin promoted phosphorylation of NF-κB p65, leading to nuclear translocation and binding to the COX-2 promoter element to enhance promoter activity, which was reduced by Gö6976, SP600125, SB202190, or U0126. These findings supported that COX-2/PGE2 expression triggered by thrombin was engaged in PAR1/Gq or Gi/o/PKCα/MAPK-dependent NF-κB activation in HTSMCs.
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Sun X, Zhang H, Qin Q, Zhang X, Hou Y, Chen D, Su X, Jia M, Chen Y. Inhibitors of the MAPK/ NF-κB pathway attenuate the upregulation of the ET B receptor mediated by high glucose in vascular smooth muscle cells. Peptides 2022; 150:170732. [PMID: 34971676 DOI: 10.1016/j.peptides.2021.170732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 12/26/2021] [Accepted: 12/27/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND Increased vascular smooth muscle cell (VSMC) endothelin type B (ETB) receptor expression is involved in cardiovascular diseases. High glucose (HG) in diabetes is closely related to cardiovascular complications. Although diabetes upregulates VSMC endothelin subtype B (ETB) receptors, its mechanism is still unclear. Our aim is to investigate the mechanism of HG-induced ETB receptors in VSMCs. METHODS Rat superior mesenteric arteries (SMAs) without endothelium were cultured in medium without serum for 24 h. HG with or without mitogen-activated protein kinase (MAPK) signaling pathway inhibitors and downstream nuclear factor-kappaB (NF-κB) inhibitors was coincubated with SMAs. A sensitive myograph detected the contractile responses to sarafotoxin 6c. Western blotting and immunofluorescence staining were used to determine protein expression. RESULTS HG promoted the expression of VSMC ETB receptors in rat SMAs and enhanced the ETB receptor-induced contractile response. The results showed that HG increased vascular smooth muscle cell (VSMC) ETB receptor expression and ETB receptor-induced contractile responses in rat SMAs. Both extracellular signal-related kinase 1 and 2 (ERK1/2) inhibitors (U0126) and P38 inhibitors (SB203580) significantly inhibited HG-increased VSMC ETB receptors. However, a C-jun terminal kinase (p-JNK) inhibitor (SP600125) did not affect HG- upregulated VSMC ETB receptors. Further study showed that NF-κB using an IκB kinase inhibitor (wedelolactone) also significantly inhibited HG-increased VSMC ETB receptors. CONCLUSION In conclusion, HG upregulated the VSMC ETB receptor by activating the ERK1/2- or P38- NF-κB signaling pathway.
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Affiliation(s)
- Xia Sun
- Institute of Basic and Translational Medicine, Shaanxi Key Laboratory of Brain Disorders, Xi'an Medical University, Xi'an, Shaanxi, 710021, China; School of Basic and Medical Sciences, Xi'an Medical University, Xi'an, Shaanxi, 710021, China
| | - Hongmei Zhang
- The First Affiliated Hospital of Xi'an Medical University, Xi'an Medical University, Xi'an, Shaanxi, 710077, China
| | - Qiaohong Qin
- Institute of Basic and Translational Medicine, Shaanxi Key Laboratory of Brain Disorders, Xi'an Medical University, Xi'an, Shaanxi, 710021, China
| | - Xin Zhang
- Institute of Basic and Translational Medicine, Shaanxi Key Laboratory of Brain Disorders, Xi'an Medical University, Xi'an, Shaanxi, 710021, China
| | - Ying Hou
- Institute of Basic and Translational Medicine, Shaanxi Key Laboratory of Brain Disorders, Xi'an Medical University, Xi'an, Shaanxi, 710021, China
| | - Di Chen
- Institute of Basic and Translational Medicine, Shaanxi Key Laboratory of Brain Disorders, Xi'an Medical University, Xi'an, Shaanxi, 710021, China; School of Basic and Medical Sciences, Xi'an Medical University, Xi'an, Shaanxi, 710021, China
| | - Xingli Su
- Institute of Basic and Translational Medicine, Shaanxi Key Laboratory of Brain Disorders, Xi'an Medical University, Xi'an, Shaanxi, 710021, China; School of Basic and Medical Sciences, Xi'an Medical University, Xi'an, Shaanxi, 710021, China
| | - Min Jia
- Institute of Basic and Translational Medicine, Shaanxi Key Laboratory of Brain Disorders, Xi'an Medical University, Xi'an, Shaanxi, 710021, China.
| | - Yulong Chen
- Institute of Basic and Translational Medicine, Shaanxi Key Laboratory of Brain Disorders, Xi'an Medical University, Xi'an, Shaanxi, 710021, China.
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11
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Farahani M, Niknam Z, Mohammadi Amirabad L, Amiri-Dashatan N, Koushki M, Nemati M, Danesh Pouya F, Rezaei-Tavirani M, Rasmi Y, Tayebi L. Molecular pathways involved in COVID-19 and potential pathway-based therapeutic targets. Biomed Pharmacother 2022; 145:112420. [PMID: 34801852 PMCID: PMC8585639 DOI: 10.1016/j.biopha.2021.112420] [Citation(s) in RCA: 63] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 11/05/2021] [Accepted: 11/10/2021] [Indexed: 01/08/2023] Open
Abstract
Deciphering the molecular downstream consequences of severe acute respiratory syndrome coronavirus (SARS-CoV)- 2 infection is important for a greater understanding of the disease and treatment planning. Furthermore, greater understanding of the underlying mechanisms of diagnostic and therapeutic strategies can help in the development of vaccines and drugs against COVID-19. At present, the molecular mechanisms of SARS-CoV-2 in the host cells are not sufficiently comprehended. Some of the mechanisms are proposed considering the existing similarities between SARS-CoV-2 and the other members of the β-CoVs, and others are explained based on studies advanced in the structure and function of SARS-CoV-2. In this review, we endeavored to map the possible mechanisms of the host response following SARS-CoV-2 infection and surveyed current research conducted by in vitro, in vivo and human observations, as well as existing suggestions. We addressed the specific signaling events that can cause cytokine storm and demonstrated three forms of cell death signaling following virus infection, including apoptosis, pyroptosis, and necroptosis. Given the elicited signaling pathways, we introduced possible pathway-based therapeutic targets; ADAM17 was especially highlighted as one of the most important elements of several signaling pathways involved in the immunopathogenesis of COVID-19. We also provided the possible drug candidates against these targets. Moreover, the cytokine-cytokine receptor interaction pathway was found as one of the important cross-talk pathways through a pathway-pathway interaction analysis for SARS-CoV-2 infection.
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Affiliation(s)
- Masoumeh Farahani
- Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zahra Niknam
- Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Nasrin Amiri-Dashatan
- Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran,Zanjan Metabolic Diseases Research Center, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Mehdi Koushki
- Department of Clinical Biochemistry, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Mohadeseh Nemati
- Department of Biochemistry, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Fahima Danesh Pouya
- Department of Biochemistry, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Mostafa Rezaei-Tavirani
- Proteomics Research Center, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Yousef Rasmi
- Department of Biochemistry, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran; Cellular and Molecular Research Center, Urmia University of Medical Sciences, Urmia, Iran.
| | - Lobat Tayebi
- Marquette University School of Dentistry, Milwaukee, WI 53233, USA
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12
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Yadav SK, Sharma P, Shah SD, Panettieri RA, Kambayashi T, Penn RB, Deshpande DA. Autocrine regulation of airway smooth muscle contraction by diacylglycerol kinase. J Cell Physiol 2022; 237:603-616. [PMID: 34278583 PMCID: PMC8763953 DOI: 10.1002/jcp.30528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 07/01/2021] [Accepted: 07/06/2021] [Indexed: 01/03/2023]
Abstract
Diacylglycerol kinase (DGK), a lipid kinase, catalyzes the conversion of diacylglycerol (DAG) to phosphatidic acid, thereby terminating DAG-mediated signaling by Gq-coupled receptors that regulate contraction of airway smooth muscle (ASM). A previous study from our laboratory demonstrated that DGK inhibition or genetic ablation leads to reduced ASM contraction and provides protection for allergen-induced airway hyperresponsiveness. However, the mechanism by which DGK regulates contractile signaling in ASM is not well established. Herein, we investigated the role of prorelaxant cAMP-protein kinase A (PKA) signaling in DGK-mediated regulation of ASM contraction. Pretreatment of human ASM cells with DGK inhibitor I activated PKA as demonstrated by the phosphorylation of PKA substrates, VASP, Hsp20, and CREB, which was abrogated when PKA was inhibited pharmacologically or molecularly using overexpression of the PKA inhibitor peptide, PKI. Furthermore, inhibition of DGK resulted in induction of cyclooxygenase (COX) and generation of prostaglandin E2 (PGE2 ) with concomitant activation of Gs-cAMP-PKA signaling in ASM cells in an autocrine/paracrine fashion. Inhibition of protein kinase C (PKC) or extracellular-signal-regulated kinase (ERK) attenuated DGK-mediated production of PGE2 and activation of cAMP-PKA signaling in human ASM cells, suggesting that inhibition of DGK activates the COX-PGE2 pathway in a PKC-ERK-dependent manner. Finally, DGK inhibition-mediated attenuation of contractile agonist-induced phosphorylation of myosin light chain 20 (MLC-20), a marker of ASM contraction, involves COX-mediated cAMP production and PKA activation in ASM cells. Collectively these findings establish a novel mechanism by which DGK regulates ASM contraction and further advances DGK as a potential therapeutic target to provide effective bronchoprotection in asthma.
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Affiliation(s)
- Santosh K. Yadav
- Center for Translational Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Jane & Leonard Korman Respiratory Institute, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA 19107
| | - Pawan Sharma
- Center for Translational Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Jane & Leonard Korman Respiratory Institute, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA 19107
| | - Sushrut D. Shah
- Center for Translational Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Jane & Leonard Korman Respiratory Institute, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA 19107
| | - Reynold A. Panettieri
- Rutgers Institute for Translational Medicine & Science, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901
| | - Taku Kambayashi
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Raymond B. Penn
- Center for Translational Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Jane & Leonard Korman Respiratory Institute, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA 19107
| | - Deepak A. Deshpande
- Center for Translational Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Jane & Leonard Korman Respiratory Institute, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA 19107.,Corresponding author Deepak Deshpande, PhD, Professor, Center for Translational Medicine, Thomas Jefferson University, Philadelphia, PA, USA 19107,
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13
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Rampa DR, Murugesan P, Chao H, Feng H, Dai W, Lee D, Pekcec A, Doods H, Wu D. Reversal of pulmonary arterial hypertension and neointimal formation by kinin B1 receptor blockade. Respir Res 2021; 22:281. [PMID: 34717626 PMCID: PMC8557528 DOI: 10.1186/s12931-021-01875-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 10/19/2021] [Indexed: 11/15/2022] Open
Abstract
Background This study examined whether BI113823, a novel selective kinin B1 receptor antagonist can reverse established pulmonary arterial hypertension (PAH), prevent right heart failure and death, which is critical for clinical translation. Methods Left pneumonectomized male Wistar rats were injected with monocrotaline to induce PAH. Three weeks later, when PAH was well established, the rats received daily treatment of BI113823 or vehicle for 3 weeks. Results Treatment with BI113823 from day 21 to day 42 after monocrotaline injection reversed established PAH as shown by normalized values of mean pulmonary arterial pressure (mPAP). BI113823 therapy reversed pulmonary vascular remodeling, pulmonary arterial neointimal formation, and heart and lung fibrosis, reduced right ventricular pressure, right heart hypertrophy, improved cardiac output, and prevented right heart failure and death. Treatment with BI113823 reduced TNF-α and IL-1β, and macrophages recruitment in bronchoalveolar lavage, reduced CD-68 positive macrophages and expression of proliferating cell nuclear antigen (PCNA) in the perivascular areas, and reduced expression of iNOS, B1 receptors, matrix metalloproteinase (MMP)-2 and MMP-9 proteins, and the phosphorylation of ERK1/2 and AKT in lung. Treatment with BI113823 reduced mRNA expression of ANP, BNP, βMHC, CGTF, collange-I and IV in right heart, compared to vehicle treated controls. In human monocytes cultures, BI113823 reduced LPS-induced TNF-α production, MMP-2 and MMP-9 expression, and reduced TNF-α-induced monocyte migration. Conclusions We conclude that BI113823 reverses preexisting severe experimental pulmonary hypertension via inhibition of macrophage infiltration, cytokine production, as well as down regulation of matrix metalloproteinase proteins.
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Affiliation(s)
- Dileep Reddy Rampa
- Department of Bio-Nanotechnology and Bio-Convergence Engineering, Chonbuk National University, Jeonju, South Korea
| | - Priya Murugesan
- Department of Bio-Nanotechnology and Bio-Convergence Engineering, Chonbuk National University, Jeonju, South Korea
| | - Honglu Chao
- Department of Neurosurgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Huiying Feng
- Department of Bio-Nanotechnology and Bio-Convergence Engineering, Chonbuk National University, Jeonju, South Korea.,Department of Research, Mount Sinai Medical Center, Miami Beach, FL, USA
| | - Wenxin Dai
- Department of Bio-Nanotechnology and Bio-Convergence Engineering, Chonbuk National University, Jeonju, South Korea
| | - Dongwon Lee
- Department of Bio-Nanotechnology and Bio-Convergence Engineering, Chonbuk National University, Jeonju, South Korea
| | - Anton Pekcec
- Research Beyond Borders, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach, Germany
| | - Henri Doods
- Research Beyond Borders, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach, Germany
| | - Dongmei Wu
- Department of Bio-Nanotechnology and Bio-Convergence Engineering, Chonbuk National University, Jeonju, South Korea. .,Department of Research, Mount Sinai Medical Center, Miami Beach, FL, USA.
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14
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Wang J, Wu Q, Ding L, Song S, Li Y, Shi L, Wang T, Zhao D, Wang Z, Li X. Therapeutic Effects and Molecular Mechanisms of Bioactive Compounds Against Respiratory Diseases: Traditional Chinese Medicine Theory and High-Frequency Use. Front Pharmacol 2021; 12:734450. [PMID: 34512360 PMCID: PMC8429615 DOI: 10.3389/fphar.2021.734450] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 08/16/2021] [Indexed: 12/28/2022] Open
Abstract
Respiratory diseases, especially the pandemic of respiratory infectious diseases and refractory chronic lung diseases, remain a key clinical issue and research hot spot due to their high prevalence rates and poor prognosis. In this review, we aimed to summarize the recent advances in the therapeutic effects and molecular mechanisms of key common bioactive compounds from Chinese herbal medicine. Based on the theories of traditional Chinese medicine related to lung diseases, we searched several electronic databases to determine the high-frequency Chinese medicines in clinical application. The active compounds and metabolites from the selected medicines were identified using the Traditional Chinese Medicine Systems Pharmacology Database (TCMSP) by analyzing oral bioavailability and drug similarity index. Then, the pharmacological effects and molecular mechanisms of the selected bioactive compounds in the viral and bacterial infections, inflammation, acute lung injury (ALI), chronic obstructive pulmonary disease (COPD), pulmonary fibrosis, asthma, and lung cancer were summarized. We found that 31 bioactive compounds from the selected 10 common Chinese herbs, such as epigallocatechin-3-gallate (EGCG), kaempferol, isorhamnetin, quercetin, and β-sitosterol, can mainly regulate NF-κB, Nrf2/HO-1, NLRP3, TGF-β/Smad, MAPK, and PI3K/Akt/mTOR pathways to inhibit infection, inflammation, extracellular matrix deposition, and tumor growth in a series of lung-related diseases. This review provides novel perspectives on the preclinical study and clinical application of Chinese herbal medicines and their bioactive compounds against respiratory diseases.
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Affiliation(s)
- Jing Wang
- Department of Respiratory, Changchun University of Chinese Medicine, Changchun, China
| | - Qibiao Wu
- State Key Laboratory of Quality Research in Chinese Medicines, Faculty of Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Lu Ding
- College of Integrated Traditional Chinese and Western Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Siyu Song
- College of Integrated Traditional Chinese and Western Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Yaxin Li
- College of Integrated Traditional Chinese and Western Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Li Shi
- Department of Respiratory, Changchun University of Chinese Medicine, Changchun, China
| | - Tan Wang
- Department of Respiratory, Changchun University of Chinese Medicine, Changchun, China
| | - Daqing Zhao
- Jilin Ginseng Academy, Key Laboratory of Active Substances and Biological Mechanisms of Ginseng Efficacy, Ministry of Education, Jilin Provincial Key Laboratory of Bio-Macromolecules of Chinese Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Zeyu Wang
- Department of Scientific Research, Changchun University of Chinese Medicine, Changchun, China
| | - Xiangyan Li
- Jilin Ginseng Academy, Key Laboratory of Active Substances and Biological Mechanisms of Ginseng Efficacy, Ministry of Education, Jilin Provincial Key Laboratory of Bio-Macromolecules of Chinese Medicine, Changchun University of Chinese Medicine, Changchun, China
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15
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Motavallian A, Bouzari S, Zamani E, Karimian P, Dabirian S, Molavi M, Torshkooh FA. An investigation of the anti-inflammatory effects of gabapentin on acetic acid-induced colitis in rats. Mol Biol Rep 2021; 48:3423-3430. [PMID: 33928442 DOI: 10.1007/s11033-021-06357-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 04/16/2021] [Indexed: 12/31/2022]
Abstract
Inflammatory bowel disease (IBD) is considered a chronic inflammatory gastrointestinal disease with treatment options which exhibit low efficacies and lead to considerable side effects. Hence, the challenge to alleviate IBD complications is remained to be resolved. The purpose of this study is evaluating anti-inflammatory impacts of gabapentin on acetic acid-induced colitis in rats. Colitis was induced by the instillation of 2 mL of 3% acetic acid solution into rat's colons. Rats were randomly allocated into six groups including normal group, colitis control group, gabapentin-treated groups (25, 50, and 100 mg/kg; i.p.), and dexamethasone-treated group (1 mg/kg; i.p.). Based on the macroscopic assessment besides histological and biochemical findings [myeloperoxidase (MPO), pro-inflammatory cytokines], the efficacy of gabapentin was investigated. Gabapentin (50 and 100 mg/kg), and dexamethasone considerably reduced macroscopic and microscopic colonic lesions induced by acetic acid in rats in comparison with colitis control group. These results were confirmed by reduced levels of MPO activity and colonic concentrations of interleukin-6, interleukin-1 beta, and tumor necrosis factor-alpha, in inflamed colon tissue. Our data demonstrated that gabapentin exerts profitable impacts in experimental colitis that might be ascribed to its anti-inflammatory features and thus can be a potential therapeutic agent for IBD treatment.
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Affiliation(s)
- Azadeh Motavallian
- Department of Pharmacology and Toxicology, School of Pharmacy, Guilan University of Medical Sciences, Rasht, Iran. .,Rhino-Sinus, Ear, and Skull Base Diseases Research Center, Department of Otolaryngology and Head and Neck Surgery, Amiralmomenin Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran.
| | - Saba Bouzari
- Student Research Committee, School of Pharmacy, Guilan University of Medical Sciences, Rasht, Iran
| | - Ehsan Zamani
- Department of Pharmacology and Toxicology, School of Pharmacy, Guilan University of Medical Sciences, Rasht, Iran
| | - Paridokht Karimian
- Department of Pathology and Histology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Sara Dabirian
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Guilan University of Medical Sciences, Rasht, Iran
| | - Mehdi Molavi
- Department of Internal Medicine, School of Medicine, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | - Forough Aghajani Torshkooh
- Department of Pharmacology and Toxicology, School of Pharmacy, Guilan University of Medical Sciences, Rasht, Iran
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16
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Li Y, Duche A, Sayer MR, Roosan D, Khalafalla FG, Ostrom RS, Totonchy J, Roosan MR. SARS-CoV-2 early infection signature identified potential key infection mechanisms and drug targets. BMC Genomics 2021; 22:125. [PMID: 33602138 PMCID: PMC7889713 DOI: 10.1186/s12864-021-07433-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 02/05/2021] [Indexed: 12/15/2022] Open
Abstract
Background The ongoing COVID-19 outbreak has caused devastating mortality and posed a significant threat to public health worldwide. Despite the severity of this illness and 2.3 million worldwide deaths, the disease mechanism is mostly unknown. Previous studies that characterized differential gene expression due to SARS-CoV-2 infection lacked robust validation. Although vaccines are now available, effective treatment options are still out of reach. Results To characterize the transcriptional activity of SARS-CoV-2 infection, a gene signature consisting of 25 genes was generated using a publicly available RNA-Sequencing (RNA-Seq) dataset of cultured cells infected with SARS-CoV-2. The signature estimated infection level accurately in bronchoalveolar lavage fluid (BALF) cells and peripheral blood mononuclear cells (PBMCs) from healthy and infected patients (mean 0.001 vs. 0.958; P < 0.0001). These signature genes were investigated in their ability to distinguish the severity of SARS-CoV-2 infection in a single-cell RNA-Sequencing dataset. TNFAIP3, PPP1R15A, NFKBIA, and IFIT2 had shown bimodal gene expression in various immune cells from severely infected patients compared to healthy or moderate infection cases. Finally, this signature was assessed using the publicly available ConnectivityMap database to identify potential disease mechanisms and drug repurposing candidates. Pharmacological classes of tricyclic antidepressants, SRC-inhibitors, HDAC inhibitors, MEK inhibitors, and drugs such as atorvastatin, ibuprofen, and ketoconazole showed strong negative associations (connectivity score < − 90), highlighting the need for further evaluation of these candidates for their efficacy in treating SARS-CoV-2 infection. Conclusions Thus, using the 25-gene SARS-CoV-2 infection signature, the SARS-CoV-2 infection status was captured in BALF cells, PBMCs and postmortem lung biopsies. In addition, candidate SARS-CoV-2 therapies with known safety profiles were identified. The signature genes could potentially also be used to characterize the COVID-19 disease severity in patients’ expression profiles of BALF cells. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07433-4.
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Affiliation(s)
- Yue Li
- School of Pharmacy, Chapman University, Irvine, CA, 92618, USA
| | - Ashley Duche
- School of Pharmacy, Chapman University, Irvine, CA, 92618, USA
| | - Michael R Sayer
- School of Pharmacy, Chapman University, Irvine, CA, 92618, USA
| | - Don Roosan
- College of Pharmacy, Western University of Health Sciences, Pomona, CA, 91766, USA
| | - Farid G Khalafalla
- College of Pharmacy, California Health Sciences University, Clovis, CA, 93612, USA
| | | | | | - Moom R Roosan
- School of Pharmacy, Chapman University, Irvine, CA, 92618, USA.
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17
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Chen HI, Hu WS, Hung MY, Ou HC, Huang SH, Hsu PT, Day CH, Lin KH, Viswanadha VP, Kuo WW, Huang CY. Protective effects of luteolin against oxidative stress and mitochondrial dysfunction in endothelial cells. Nutr Metab Cardiovasc Dis 2020; 30:1032-1043. [PMID: 32402583 DOI: 10.1016/j.numecd.2020.02.014] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 02/13/2020] [Accepted: 02/18/2020] [Indexed: 01/29/2023]
Abstract
BACKGROUND AND AIMS Luteolin is a common flavonoid that is abundantly present in various edible plants, it is known to exhibit beneficial effects on cardiovascular system. However, the mechanisms which underlie the protective effects of luteolin on endothelial cell damage caused by oxidative stress remains unclear. The purpose of this study is to test the hypothesis which states that luteolin protects against H2O2-induced oxidative stress via modulating ROS-mediated P38 MAPK/NF-κB and calcium-evoked mitochondrial apoptotic signalling pathways. METHODS AND RESULTS Human umbilical vein endothelial cells (HUVECs) were pretreated with luteolin prior to being stimulated by 600 μM H2O2 for another 24 h. The expression of native and phosphorylated-P38, IκB, NF-κB, native eNOS, phosphorylated-eNOS, iNOS and several apoptosis-related proteins were analyzed by Western blot. In addition, intracellular calcium was determined by fura-2 AM and mitochondrial membrane potential was examined by using JC1. Using the data gathered, we found indications that H2O2 induced P38 MAPK/NF-κB activation. H2O2 downregulated the expression of eNOS and upregulated iNOS, which in turn contribute to an elevated NO generation and protein nitrosylation. However, pretreatment with luteolin markedly reversed all of these alterations dose-dependently. Additionally, an intracellular calcium rise and subsequent mitochondrial membrane potential collapse, P53 phosphorylation, reduced BcL-2/Bax ratio in the mitochondrial membrane, release cytochrome c from mitochondria, leading to the subsequent activation of caspase 3 activation by H2O2 were all markedly suppressed in the presence of luteolin. CONCLUSION Results from this study may provide the possible molecular mechanisms underlying cardiovascular protective effects of luteolin.
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Affiliation(s)
- Hsiu-I Chen
- Department of Physical Therapy, Hungkuang University, Taichung, Taiwan
| | - Wei-Syun Hu
- School of Medicine, College of Medicine, China Medical University, Taichung, 40402, Taiwan
| | - Meng-Yu Hung
- Graduate Institute of Biomedicine, China Medical University and Hospital, Taichung, Taiwan
| | - Hsiu-Chung Ou
- Department of Physical Therapy, College of Medical and Health Science, Asia University, Taichung, Taiwan
| | - Su-Hua Huang
- Department of Biotechnology, Asia University, Taichung, Taiwan
| | - Pei-Tzu Hsu
- Department of Biotechnology, Asia University, Taichung, Taiwan
| | | | - Kuan-Ho Lin
- School of Medicine, College of Medicine, China Medical University, Taichung, 40402, Taiwan; Division of Emergency, Department of Medicine, China Medical University Hospital, Taichung, 40447, Taiwan
| | - Vijaya P Viswanadha
- Department of Biotechnology, Bharathiar University, Coimbatore, 641 046, India
| | - Wei-Wen Kuo
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan
| | - Chih-Yang Huang
- Graduate Institute of Biomedicine, China Medical University and Hospital, Taichung, Taiwan; Department of Biotechnology, Asia University, Taichung, Taiwan; Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, 404, Taiwan; Cardiovascular and Mitochondrial Related Diseases Research Center, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan; Center of General Education, Buddhist Tzu Chi Medical Foundation, Tzu Chi University of Science and Technology, Hualien, 970, Taiwan.
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18
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Jiang JX, Shen HJ, Guan Y, Jia YL, Shen J, Liu Q, Xie QM, Yan XF. ZDHXB-101 (3',5-Diallyl-2, 4'-dihydroxy-[1,1'-biphen-yl]-3,5'-dicarbaldehyde) protects against airway remodeling and hyperresponsiveness via inhibiting both the activation of the mitogen-activated protein kinase and the signal transducer and activator of transcription-3 signaling pathways. Respir Res 2020; 21:22. [PMID: 31931796 PMCID: PMC6958776 DOI: 10.1186/s12931-020-1281-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 01/05/2020] [Indexed: 02/12/2023] Open
Abstract
Airway remodeling consists of the structural changes of airway walls, which is often considered the result of longstanding airway inflammation, but it may be present to an equivalent degree in the airways of children with asthma, raising the need for early and specific therapeutic interventions. The arachidonic acid cytochrome P-450 (CYP) pathway has thus far received relatively little attention in its relation to asthma. In this study, we studied the inhibition of soluble epoxide hydrolase (sEH) on airway remodeling and hyperresponsiveness (AHR) in a chronic asthmatic model which long-term exposure to antigen over a period of 12 weeks. The expression of sEH and CYP2J2, the level of 14, 15-epoxyeicosatrienoic acids (EETs), airway remodeling, hyperresponsiveness and inflammation were analyzed to determine the inhibition of sEH. The intragastric administration of 3 or 10 mg/kg ZDHXB-101, which is a structural derivative of natural product honokiol and a novel soluble epoxide hydrolase (sEH) inhibitor, daily for 9 weeks significantly increased the level of 14, 15-EETs by inhibiting the expression of sEH and increasing the expression of CYP2J2 in lung tissues. ZDHXB-101 reduced the expression of remodeling-related markers such as interleukin (IL)-13, IL-17, MMP-9 N-cadherin, α-smooth muscle actin, S100A4, Twist, goblet cell metaplasia, and collagen deposition in the lung tissue or in bronchoalveolar lavage fluid. Moreover, ZDHXB-101 alleviated AHR, which is an indicator that is used to evaluate the airway remodeling function. The inhibitory effects of ZDHXB-101 were demonstrated to be related to its direct inhibition of the extracellular signal-regulated kinase (Erk1/2) phosphorylation, as well as inhibition of c-Jun N-terminal kinases (JNK) and the signal transducer and activator of transcription-3 (STAT3) signal transduction. These findings first revealed the anti-remodeling potential of ZDHXB-101 lead in chronic airway disease.
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Affiliation(s)
- Jun-Xia Jiang
- The Second Affiliated Hospital, Zhejiang University School of Medicine, # 88 Jiefang Rd, Hangzhou, 310009, Zhejiang Province, China.,Zhejiang Respiratory Drugs Research Laboratory of State Food and Drug Administration of China, Zhejiang University School of Medicine, # 866 Yuhangtang Rd, Hangzhou, 310058, Zhejiang Province, China
| | - Hui-Juan Shen
- The Second Affiliated Hospital, Zhejiang University School of Medicine, # 88 Jiefang Rd, Hangzhou, 310009, Zhejiang Province, China.,Zhejiang Respiratory Drugs Research Laboratory of State Food and Drug Administration of China, Zhejiang University School of Medicine, # 866 Yuhangtang Rd, Hangzhou, 310058, Zhejiang Province, China
| | - Yan Guan
- Zhejiang Respiratory Drugs Research Laboratory of State Food and Drug Administration of China, Zhejiang University School of Medicine, # 866 Yuhangtang Rd, Hangzhou, 310058, Zhejiang Province, China.,Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yong-Liang Jia
- Zhejiang Respiratory Drugs Research Laboratory of State Food and Drug Administration of China, Zhejiang University School of Medicine, # 866 Yuhangtang Rd, Hangzhou, 310058, Zhejiang Province, China
| | - Jian Shen
- Zhejiang Respiratory Drugs Research Laboratory of State Food and Drug Administration of China, Zhejiang University School of Medicine, # 866 Yuhangtang Rd, Hangzhou, 310058, Zhejiang Province, China
| | - Qi Liu
- Zhejiang Respiratory Drugs Research Laboratory of State Food and Drug Administration of China, Zhejiang University School of Medicine, # 866 Yuhangtang Rd, Hangzhou, 310058, Zhejiang Province, China
| | - Qiang-Min Xie
- Zhejiang Respiratory Drugs Research Laboratory of State Food and Drug Administration of China, Zhejiang University School of Medicine, # 866 Yuhangtang Rd, Hangzhou, 310058, Zhejiang Province, China.
| | - Xiao-Feng Yan
- The Second Affiliated Hospital, Zhejiang University School of Medicine, # 88 Jiefang Rd, Hangzhou, 310009, Zhejiang Province, China.
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19
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Jiang JX, Guan Y, Shen HJ, Jia YL, Shen J, Zhang LH, Liu Q, Zhu YL, Xie QM. Inhibition of soluble epoxide hydrolase attenuates airway remodeling in a chronic asthma model. Eur J Pharmacol 2019; 868:172874. [PMID: 31866410 DOI: 10.1016/j.ejphar.2019.172874] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/10/2019] [Accepted: 12/16/2019] [Indexed: 12/12/2022]
Abstract
Airway remodeling in asthma is difficult to treat because of its complex pathophysiology that involves proinflammatory cytokines, as well as the arachidonic acid cytochrome P-450 (CYP) pathway; however, it has received little attention. In this study, we assessed the efficacy of a soluble epoxide hydrolase (sEH) on airway remodeling in a mouse model of chronic asthma. The expression of sEH and CYP2J2 and the level of 14,15-epoxyeicosatrienoic acid (14,15-EET), airway remodeling and hyperresponsiveness (AHR) were analyzed to determine the level of sEH inhibition. AUDA, a sEH inhibitor, was given daily for 9 weeks orally, which significantly increased the level of 14,15-EET by inhibiting the expression of sEH and increasing the expression of CYP2J2 in lung tissues. The inhibition of sEH reduced the expression of remodeling-related molecular markers, such as interleukin (IL)-13, IL-17, matrix metalloproteinase 9, N-cadherin, α-smooth muscle actin (α-SMA), S100A4, Twist, epithelial goblet cell metaplasia, and collagen deposition in bronchoalveolar lavage fluid (BAL fluid) and lung tissues. Moreover, remodeling-related eosinophil accumulation in the BAL fluid and infiltration into the lung tissue were improved by AUDA. Finally, AUDA alleviated AHR, which is a functional indicator of airway remodeling. The effect of AUDA on airway remodeling was related to the downregulation of extracellular-regulated protein kinases (Erk1/2), c-Jun N-terminal kinases (JNK) and signal transducer and activator of transcription 3 (STAT3). To our knowledge, this is the first report to demonstrate that inhibition of sEH exerts significant protective effects on airway remodeling in asthma.
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Affiliation(s)
- Jun-Xia Jiang
- Children's Hospital, Zhejiang University School of Medicine, Hangzhou, 310052, China; Zhejiang Respiratory Drugs Research Laboratory of State Food and Drug Administration of China, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Yan Guan
- Children's Hospital, Zhejiang University School of Medicine, Hangzhou, 310052, China; Zhejiang Respiratory Drugs Research Laboratory of State Food and Drug Administration of China, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Hui-Juan Shen
- The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, China; Zhejiang Respiratory Drugs Research Laboratory of State Food and Drug Administration of China, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Yong-Liang Jia
- Zhejiang Respiratory Drugs Research Laboratory of State Food and Drug Administration of China, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Jian Shen
- Zhejiang Respiratory Drugs Research Laboratory of State Food and Drug Administration of China, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Lin-Hui Zhang
- Children's Hospital, Zhejiang University School of Medicine, Hangzhou, 310052, China; Zhejiang Respiratory Drugs Research Laboratory of State Food and Drug Administration of China, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Qi Liu
- Zhejiang Respiratory Drugs Research Laboratory of State Food and Drug Administration of China, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Yi-Liang Zhu
- Hangzhou Medical College, Hangzhou, 310053, China
| | - Qiang-Min Xie
- Children's Hospital, Zhejiang University School of Medicine, Hangzhou, 310052, China; Zhejiang Respiratory Drugs Research Laboratory of State Food and Drug Administration of China, Zhejiang University School of Medicine, Hangzhou, 310058, China.
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Ricciardolo FLM, Folkerts G, Folino A, Mognetti B. Bradykinin in asthma: Modulation of airway inflammation and remodelling. Eur J Pharmacol 2018; 827:181-188. [PMID: 29548973 DOI: 10.1016/j.ejphar.2018.03.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 03/05/2018] [Accepted: 03/09/2018] [Indexed: 01/12/2023]
Abstract
Bradykinin, a pro-inflammatory molecule, and its related peptides have been studied for their effects on acute reactions in upper and lower airways, where they can be synthesised and metabolized after exposure to different stimuli including allergens and viral infection. Bradykinin B1 and B2 receptors are constitutively expressed in the airways on several residential and/or immune cells. Their expression can also be induced by inflammatory mediators, usually associated with eosinophil and neutrophil recruitment, such as IL-4, IL-13, TNF-α, IL-6 and IL-8, via intracellular MAPK and NF-κB signalling. In turn, the latters up-regulate both bradykinin receptors. Bradykinin activates epithelial/endothelial and immune cells, neurons and mesenchymal cells (such as fibroblasts, myofibroblasts and smooth muscle cells), which are implicated in the development of airway chronic inflammation, responsiveness and remodelling (a major feature of severe asthma). This review highlights the role of bradykinin and its receptors in respect to chronic inflammatory response involving eosinophils/neutrophils and to vascular/matrix-related airway remodelling in asthmatic airways. This scenario is especially important for understanding the mechanisms involved in the pathogenesis of eosinophilic and/or neutrophilic asthma and hence their therapeutic approach.
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Affiliation(s)
- Fabio L M Ricciardolo
- Department of Clinical and Biological Sciences, University of Torino, Torino, Italy.
| | - Gert Folkerts
- Department of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, Utrecht, Netherlands
| | - Anna Folino
- Department of Clinical and Biological Sciences, University of Torino, Torino, Italy
| | - Barbara Mognetti
- Department of Clinical and Biological Sciences, University of Torino, Torino, Italy
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Zhou LF, Chen QZ, Yang CT, Fu ZD, Zhao ST, Chen Y, Li SN, Liao L, Zhou YB, Huang JR, Li JH. TRPC6 contributes to LPS-induced inflammation through ERK1/2 and p38 pathways in bronchial epithelial cells. Am J Physiol Cell Physiol 2017; 314:C278-C288. [PMID: 29141922 DOI: 10.1152/ajpcell.00117.2017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
receptor potential canonical (TRPC) channels are presently an emerging target for airway disorders. Recent evidence has indicated that TRPC6 as a member of the TRPC family plays an important role in airway inflammation, but its precise function in bronchial epithelial cells remains unclear. The aim of this study was to investigate the role of TRPC6 in Toll-like receptor 4 (TLR4)-mediated inflammation in human bronchial epithelial cells stimulated by endotoxin [lipopolysaccharide (LPS)]. Hyp9 is a simplified phloroglucinol derivative of hyperforin that highly selectively activates TRPC6 channels. The results show that the activation of TRPC6 by Hyp9 induced the production of interleukin (IL)-8 and IL-6. LPS was also able to induce the release of IL-8 and IL-6, which was significantly aggravated by Hyp9 and reduced by knockdown of TRPC6. Treatment with LPS not only chronically induced the expression of TRPC6 mRNA and protein in a TLR4-dependent manner but also acutely increased Ca2+ influx through TRPC6 channels. In addition, LPS-induced overexpression of TRPC6 and Ca2+ influx were associated with the phosphorylation of phosphatidylinositol 3-kinase (PI3K) and Akt. Importantly, TRPC6 was required for the activation of ERK1/2, p38, and NF-κB. In conclusion, these data reveal that LPS induced the overexpression of TRPC6 and TRPC6-dependent Ca2+ influx via the TLR4/PI3K/Akt pathway resulting in Ca2+ mobilization, which subsequently promoted the activation of ERK1/2, p38, and NF-κB and the inflammatory response in bronchial epithelial cells.
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Affiliation(s)
- Li-Fen Zhou
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences; Affiliated Cancer Hospital and Institute, Guangzhou Medical University , Guangzhou , China
| | - Qing-Zi Chen
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences; Affiliated Cancer Hospital and Institute, Guangzhou Medical University , Guangzhou , China
| | - Chun-Tao Yang
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences; Affiliated Cancer Hospital and Institute, Guangzhou Medical University , Guangzhou , China
| | - Zhao-Di Fu
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences; Affiliated Cancer Hospital and Institute, Guangzhou Medical University , Guangzhou , China
| | - Shen-Ting Zhao
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences; Affiliated Cancer Hospital and Institute, Guangzhou Medical University , Guangzhou , China
| | - Yan Chen
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences; Affiliated Cancer Hospital and Institute, Guangzhou Medical University , Guangzhou , China
| | - Shu-Ni Li
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences; Affiliated Cancer Hospital and Institute, Guangzhou Medical University , Guangzhou , China
| | - Li Liao
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences; Affiliated Cancer Hospital and Institute, Guangzhou Medical University , Guangzhou , China
| | - Yu-Bo Zhou
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences; Affiliated Cancer Hospital and Institute, Guangzhou Medical University , Guangzhou , China
| | - Jian-Rong Huang
- Department of Orthopedics, Sun Yat-sen Memorial Hospital of Sun Yat-sen University , Guangzhou , China
| | - Jian-Hua Li
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences; Affiliated Cancer Hospital and Institute, Guangzhou Medical University , Guangzhou , China
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Future Directions and Molecular Basis of Ventilator Associated Pneumonia. Can Respir J 2017; 2017:2614602. [PMID: 29162982 PMCID: PMC5661065 DOI: 10.1155/2017/2614602] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 09/14/2017] [Indexed: 12/26/2022] Open
Abstract
Mechanical ventilation is a lifesaving treatment and has complications such as ventilator associated pneumonia (VAP) that lead to high morbidity and mortality. Moreover VAP is the second most common hospital-acquired infection in pediatric intensive care units. Although it is still not well understood, understanding molecular pathogenesis is essential for preventing and treating pneumonia. A lot of microbes are detected as a causative agent of VAP. The most common isolated VAP pathogens in pediatric patients are Staphylococcus aureus, Pseudomonas aeruginosa, and other gram negative bacteria. All of the bacteria have different pathogenesis due to their different virulence factors and host reactions. This review article focused on mechanisms of VAP with molecular pathogenesis of the causative bacteria one by one from the literature. We hope that we know more about molecular pathogenesis of VAP and we can investigate and focus on the management of the disease in near future.
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The effect of sodium valproate on acetic acid-induced colitis in rats. Inflammopharmacology 2016; 25:137-145. [DOI: 10.1007/s10787-016-0304-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Accepted: 12/10/2016] [Indexed: 01/22/2023]
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Shin NR, Ryu HW, Ko JW, Park JW, Kwon OK, Oh SR, Kim JC, Shin IS, Ahn KS. A standardized bark extract of Pinus pinaster Aiton (Pycnogenol ®) attenuated chronic obstructive pulmonary disease via Erk-sp1 signaling pathway. JOURNAL OF ETHNOPHARMACOLOGY 2016; 194:412-420. [PMID: 27725237 DOI: 10.1016/j.jep.2016.10.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 09/26/2016] [Accepted: 10/07/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE A standardized bark extract of Pinus pinaster Aiton (Pycnogenol®; PYC) used as an herbal medicine to treat various diseases in Europe and North America. AIM OF THE STUDY This study evaluates the ability of PYC to inhibit chronic obstructive pulmonary disease (COPD) in the cigarette smoke extract (CSE)-stimulated human airway epithelial cell line NCI-H292 and in a cigarette smoke (CS) and lipopolysaccharide (LPS)-induced mouse model. METHODS To induce COPD, the mice intranasally received LPS on day 4 and were exposed to CS for 1h per day (total eight cigarettes per day) from days 1-7. The mice were administered PYC at a dose of 15mg/kg and 30mg/kg 1h before CS exposure. RESULTS In the CSE-stimulated NCI-H292 cells, PYC significantly inhibited Erk phosphorylation, sp1 expression, MUC5AC, and pro-inflammatory cytokines in a concentration-dependent manner, as evidenced by a reduction in their mRNA levels. Co-treatment with PYC and Erk inhibitors markedly reduced the levels inflammatory mediators compared to only PYC-treatment. In the COPD mice model, PYC decreased the inflammatory cell count and the levels of pro-inflammatory cytokines in the broncho-alveolar lavage fluid compared with COPD mice. PYC attenuated the recruitment of inflammatory cells in the airways and decreased the expression levels of Erk phosphorylation and sp1. PYC also inhibited the expression of myeloperoxidase and matrix metalloproteinases-9 in lung tissue. CONCLUSION Our results indicate that PYC inhibited the reduction in the inflammatory response in CSE-stimulated NCI-H292 cells and the COPD mouse model via the Erk-sp1 pathway. Therefore, we suggest that PYC has the potential to treat COPD.
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Affiliation(s)
- Na-Rae Shin
- College of Veterinary Medicine (BK21 Plus Project Team), Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 500-757, Republic of Korea.
| | - Hyung-Won Ryu
- Natural Medicine Research Center, Korea Research Institute of Bioscience & Biotechnology, 30 Yeongudanji-ro, Ochang-eup, Cheongwon-gun, Chungbuk 363-883, Republic of Korea.
| | - Je-Won Ko
- College of Veterinary Medicine (BK21 Plus Project Team), Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 500-757, Republic of Korea.
| | - Ji-Won Park
- Natural Medicine Research Center, Korea Research Institute of Bioscience & Biotechnology, 30 Yeongudanji-ro, Ochang-eup, Cheongwon-gun, Chungbuk 363-883, Republic of Korea.
| | - Ok-Kyoung Kwon
- Natural Medicine Research Center, Korea Research Institute of Bioscience & Biotechnology, 30 Yeongudanji-ro, Ochang-eup, Cheongwon-gun, Chungbuk 363-883, Republic of Korea.
| | - Sei-Ryang Oh
- Natural Medicine Research Center, Korea Research Institute of Bioscience & Biotechnology, 30 Yeongudanji-ro, Ochang-eup, Cheongwon-gun, Chungbuk 363-883, Republic of Korea.
| | - Jong-Choon Kim
- College of Veterinary Medicine (BK21 Plus Project Team), Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 500-757, Republic of Korea.
| | - In-Sik Shin
- College of Veterinary Medicine (BK21 Plus Project Team), Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 500-757, Republic of Korea.
| | - Kyung-Seop Ahn
- Natural Medicine Research Center, Korea Research Institute of Bioscience & Biotechnology, 30 Yeongudanji-ro, Ochang-eup, Cheongwon-gun, Chungbuk 363-883, Republic of Korea.
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25
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Chen HT, Sun D, Peng YC, Kao PH, Wu YL. Novel augmentation by bufalin of protein kinase C-induced cyclooxygenase-2 and IL-8 production in human breast cancer cells. Innate Immun 2016; 23:54-66. [DOI: 10.1177/1753425916676347] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Cyclooxygenase-2 (COX-2) and IL-8 are two inflammatory mediators induced by protein kinase C (PKC) via various stimuli. Both contribute significantly to cancer progression. Bufalin, a major active component of the traditional Chinese medicine Chan Su, is known to induce apoptosis in various cancer cells. This study clarifies the role and mechanism of bufalin action during PKC regulation of COX-2/IL-8 expression and investigates the associated impact on breast cancer. Using MB-231 breast cancer cells, bufalin augments PKC induction of COX-2/IL-8 at both the protein and mRNA levels, and the production of prostaglandin E2 (PGE2) and IL-8. The MAPK and NF-κB pathways are involved in both the PKC-mediated and bufalin-promoted PKC regulation of COX-2/IL-8 production. Bufalin increases PKC-induced MAPKs phosphorylation and NF-κB nuclear translocation. PGE2 stimulates the proliferation/migration of breast cancer cells. Furthermore, PKC-induced matrix metalloproteinase 3 expression is enhanced by bufalin. Bufalin significantly enhances breast cancer xenograft growth, which is accompanied by an elevation in COX-2/IL-8 expression. In conclusion, bufalin seems to promote the inflammatory response in vitro and in vivo, and this occurs, at least in part, by targeting the MAPK and NF-κB pathways, which then enhances the growth of breast cancer cells.
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Affiliation(s)
- Hsiao-Ting Chen
- Department of Physiology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - David Sun
- Department of Obstetrics and Gynecology, Cheng Hsin General Hospital, Taipei, Taiwan
| | - Yen-Chun Peng
- Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Pu-Hong Kao
- Department of Physiology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Yuh-Lin Wu
- Department of Physiology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
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Seyedrezazadeh E, Sabri A, Barzegari A, Kolahian S, Shahbazfar AA, Ansarin K, Vafa M, Sakhinia E. Dietary flavanones and citrus fruits influence cytokines and thyroid transcription factor-1 in an HDM-induced chronic asthma murine model. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.08.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Herbal Medicines for Asthmatic Inflammation: From Basic Researches to Clinical Applications. Mediators Inflamm 2016; 2016:6943135. [PMID: 27478309 PMCID: PMC4958455 DOI: 10.1155/2016/6943135] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 05/22/2016] [Accepted: 06/05/2016] [Indexed: 12/18/2022] Open
Abstract
Asthma is one of the most common chronic inflammatory disorders, associated with reversible airflow obstruction, airway hyperresponsiveness, and airway remodeling. This disease has a significant impact on individuals, their families, and society. Standardized therapeutics such as inhaled corticosteroid in combination with long acting β2 agonist have been applied for asthma control; however, complementary and alternative medicines, especially herbal medicines, are still widely used all over the world. A growing body of literature suggests that various herbals or related products might be effective in inhibiting asthmatic inflammation. In this review, we summarize recent advances about the mechanistic studies of herbal medicines on allergic airway inflammation in animal models and their potential application into clinic for asthma control.
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Hou Y, Nie Y, Cheng B, Tao J, Ma X, Jiang M, Gao J, Bai G. Qingfei Xiaoyan Wan, a traditional Chinese medicine formula, ameliorates Pseudomonas aeruginosa-induced acute lung inflammation by regulation of PI3K/AKT and Ras/MAPK pathways. Acta Pharm Sin B 2016; 6:212-21. [PMID: 27175332 PMCID: PMC4856955 DOI: 10.1016/j.apsb.2016.03.002] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 02/04/2016] [Accepted: 02/22/2016] [Indexed: 12/27/2022] Open
Abstract
Gram-negative pathogen–induced nosocomial infections and resistance are a most serious menace to global public health. Qingfei Xiaoyan Wan (QF), a traditional Chinese medicine (TCM) formula, has been used clinically in China for the treatment of upper respiratory tract infections, acute or chronic bronchitis and pulmonary infection. In this study, the effects of QF on Pseudomonas aeruginosa–induced acute pneumonia in mice were evaluated. The mechanisms by which four typical anti-inflammatory ingredients from QF, arctigenin (ATG), cholic acid (CLA), chlorogenic acid (CGA) and sinapic acid (SPA), regulate anti-inflammatory signaling pathways and related targets were investigated using molecular biology and molecular docking techniques. The results showed that pretreatment with QF significantly inhibits the release of cytokines (TNF-α and IL-6) and chemokines (IL-8 and RANTES), reduces leukocytes recruitment into inflamed tissues and ameliorates pulmonary edema and necrosis. In addition, ATG was identified as the primary anti-inflammatory agent with action on the PI3K/AKT and Ras/MAPK pathways. CLA and CGA enhanced the actions of ATG and exhibited synergistic NF-κB inactivation effects possibly via the Ras/MAPK signaling pathway. Moreover, CLA is speculated to target FGFR and MEK firstly. Overall, QF regulated the PI3K/AKT and Ras/MAPK pathways to inhibit pathogenic bacterial infections effectively.
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Key Words
- ATG, arctigenin
- Anti-inflammatory
- CGA, chlorogenic acid
- CLA, cholic acid
- DMSO, dimethylsulfoxide
- Dex, dexamethasone
- ELISA, enzyme-linked immunosorbent assay
- ESI, electrospray ionization
- GA, genetic algorithm
- HE, hematoxylin and eosin
- KEGG, Kyoto Encyclopedia of Genes and Genomes
- LB, Luria–Bertani
- LEV, levofloxacin
- Lung
- MAPK, mitogen activated protein kinase
- Mouse
- NFATc1, nuclear factor of activated T cells c1
- Network pharmacology
- Ninj1, ninjurin1
- PBS, phosphate-buffered saline
- PI3K, phosphoinositide 3-kinase
- PI3K/AKT pathway
- Pathogenic bacterial infection
- QF, Qingfei Xiaoyan Wan
- Ras/MAPK pathway
- SARS, severe acute respiratory syndrome
- SPA, sinapic acid
- TCM, traditional Chinese medicine
- TTBS, Tween 20/Tris-buffered saline
- UPLC, ultra-performance liquid chromatography
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Affiliation(s)
- Yuanyuan Hou
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300071, China
- Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China
| | - Yan Nie
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300071, China
- Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China
| | - Binfeng Cheng
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300071, China
- Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China
| | - Jin Tao
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300071, China
- Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China
| | - Xiaoyao Ma
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300071, China
- Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China
| | - Min Jiang
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300071, China
- Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China
| | - Jie Gao
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300071, China
- Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China
| | - Gang Bai
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin 300071, China
- Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300071, China
- Corresponding author.
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Kilstein Y, Nowak W, Errasti AE, Feás AAB, Armesto AR, Pelorosso FG, Rothlin RP. Involvement of Extracellular Signal-Regulated Kinase 5 in Kinin B1 Receptor Upregulation in Isolated Human Umbilical Veins. J Pharmacol Exp Ther 2016; 357:114-24. [PMID: 26769916 DOI: 10.1124/jpet.115.230169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 01/08/2016] [Indexed: 11/22/2022] Open
Abstract
The upregulated kinin B1 receptors exert a pivotal role in modulating inflammatory processes. In isolated human umbilical veins (HUVs), kinin B1 receptor is upregulated as a function of in vitro incubation time and proinflammatory stimuli. The aim of this study was to evaluate, using functional and biochemical methods, the involvement of extracellular signal-regulated kinase 5 (ERK5), p38 mitogen-activated protein kinase (MAPK), c-Jun N-terminal kinase (JNK), and extracellular signal-regulated kinase 1/2 (ERK1/2) on the kinin B1 receptor upregulation process in HUV. Real-time polymerase chain reaction analysis revealed for the first time that kinin B1 receptor mRNA expression closely parallels the functional sensitization to kinin B1 receptor selective agonist des-Arg(10)-kallidin (DAKD) in HUV. Moreover, the selective inhibition of ERK5, p38 MAPK, and JNK, but not ERK1/2, produced a dose-dependent rightward shift of the concentration-response curves to DAKD after 5-hour incubation and a reduction in kinin B1 receptor mRNA expression. Biochemical analyses showed that ERK5, p38 MAPK, and JNK phosphorylation is maximal during the first 2 hours postisolation, followed by a significant reduction in the last 3 hours. None of the treatments modified the responses to serotonin, an unrelated agonist, suggesting a specific effect on kinin B1 receptor upregulation. The present work provides for the first time pharmacologic evidence indicating that ERK5 plays a significant role on kinin B1 receptor upregulation. Furthermore, we confirm the relevance of p38 MAPK and JNK as well as the lack of effect of ERK1/2 in this process. This study may contribute to a better understanding of MAPK involvement in inflammatory and immunologic diseases.
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Affiliation(s)
- Yael Kilstein
- Instituto de Farmacología, Facultad de Medicina, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Wanda Nowak
- Instituto de Farmacología, Facultad de Medicina, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Andrea Emilse Errasti
- Instituto de Farmacología, Facultad de Medicina, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Antía Andrea Barcia Feás
- Instituto de Farmacología, Facultad de Medicina, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Arnaldo Raúl Armesto
- Instituto de Farmacología, Facultad de Medicina, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Facundo Germán Pelorosso
- Instituto de Farmacología, Facultad de Medicina, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Rodolfo Pedro Rothlin
- Instituto de Farmacología, Facultad de Medicina, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
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Continuous Exposure to Low-Dose-Rate Gamma Irradiation Reduces Airway Inflammation in Ovalbumin-Induced Asthma. PLoS One 2015; 10:e0143403. [PMID: 26588845 PMCID: PMC4654498 DOI: 10.1371/journal.pone.0143403] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 11/04/2015] [Indexed: 11/19/2022] Open
Abstract
Although safe doses of radiation have been determined, concerns about the harmful effects of low-dose radiation persist. In particular, to date, few studies have investigated the correlation between low-dose radiation and disease development. Asthma is a common chronic inflammatory airway disease that is recognized as a major public health problem. In this study, we evaluated the effects of low-dose-rate chronic irradiation on allergic asthma in a murine model. Mice were sensitized and airway-challenged with ovalbumin (OVA) and were exposed to continuous low-dose-rate irradiation (0.554 or 1.818 mGy/h) for 24 days after initial sensitization. The effects of chronic radiation on proinflammatory cytokines and the activity of matrix metalloproteinase-9 (MMP-9) were investigated. Exposure to low-dose-rate chronic irradiation significantly decreased the number of inflammatory cells, methylcholine responsiveness (PenH value), and the levels of OVA-specific immunoglobulin E, interleukin (IL)-4, and IL-5. Furthermore, airway inflammation and the mucus production in lung tissue were attenuated and elevated MMP-9 expression and activity induced by OVA challenge were significantly suppressed. These results indicate that low-dose-rate chronic irradiation suppresses allergic asthma induced by OVA challenge and does not exert any adverse effects on asthma development. Our findings can potentially provide toxicological guidance for the safe use of radiation and relieve the general anxiety about exposure to low-dose radiation.
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Mateu A, De Dios I, Manso MA, Ramudo L. Unsaturated but not saturated fatty acids induce transcriptional regulation of CCL2 in pancreatic acini. A potential role in acute pancreatitis. Biochim Biophys Acta Mol Basis Dis 2015; 1852:2671-7. [PMID: 26415685 DOI: 10.1016/j.bbadis.2015.09.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 09/14/2015] [Accepted: 09/21/2015] [Indexed: 01/27/2023]
Affiliation(s)
- A Mateu
- Department of Physiology and Pharmacology, University of Salamanca, 37007 Salamanca, Spain
| | - I De Dios
- Department of Physiology and Pharmacology, University of Salamanca, 37007 Salamanca, Spain
| | - M A Manso
- Department of Physiology and Pharmacology, University of Salamanca, 37007 Salamanca, Spain
| | - L Ramudo
- Department of Physiology and Pharmacology, University of Salamanca, 37007 Salamanca, Spain.
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Chou WY, Chuang KH, Sun D, Lee YH, Kao PH, Lin YY, Wang HW, Wu YL. Inhibition of PKC-Induced COX-2 and IL-8 Expression in Human Breast Cancer Cells by Glucosamine. J Cell Physiol 2015; 230:2240-51. [DOI: 10.1002/jcp.24955] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Accepted: 02/05/2015] [Indexed: 12/17/2022]
Affiliation(s)
- Wan-Yu Chou
- Department of Physiology; School of Medicine; National Yang-Ming University; Taipei Taiwan
| | - Kun-Han Chuang
- Department of Physiology; School of Medicine; National Yang-Ming University; Taipei Taiwan
| | - David Sun
- Department of Obstetrics and Gynecology; Cheng Hsin General Hospital; Taipei Taiwan
| | - Yu-Hsiu Lee
- Institute of Microbiology and Immunology; School of Life Sciences; National Yang-Ming University; Taipei Taiwan
| | - Pu-Hong Kao
- Department of Physiology; School of Medicine; National Yang-Ming University; Taipei Taiwan
| | - Yen-Yu Lin
- Department of Physiology; School of Medicine; National Yang-Ming University; Taipei Taiwan
| | - Hsei-Wei Wang
- Institute of Microbiology and Immunology; School of Life Sciences; National Yang-Ming University; Taipei Taiwan
| | - Yuh-Lin Wu
- Department of Physiology; School of Medicine; National Yang-Ming University; Taipei Taiwan
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Xu Y, Zhang Y, Cardell LO. Nicotine exaggerates LPS-induced airway hyperreactivity via JNK-mediated up-regulation of Toll-like receptor 4. Am J Respir Cell Mol Biol 2014; 51:370-9. [PMID: 24669857 DOI: 10.1165/rcmb.2013-0409oc] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Tobacco smokers often display increased airway hyperreactivity (AHR) when faced with bacterial infections. The present study uses a murine organ-culture model to dissect the mechanisms involved in this exaggerated smooth muscle response. Nicotine simulates the effects of smoking, and LPS represents bacterial infection. Contractile responses of isolated murine tracheal segments were analyzed in myographs after organ culture with increasing concentrations of LPS and/or nicotine for 4 days with or without specific MAPK inhibitors. Nicotine's effect on the expression of cell surface Toll-like receptors (TLRs), MCP-1, COX-2, and TNF-α were examined by real-time PCR. Increased protein expression was verified by immunohistochemistry. LPS concentration-dependently increased contractile responses to bradykinin and des-Arg(9)-bradykinin. A combination of nicotine and low-dose LPS caused powerful synergistic contractions along with increased kinin receptor expression. Specific kinin B1 and B2 receptor inhibitors blocked this reaction. Nicotine increased mRNA and protein expression of TLR4 and -6 in the epithelium and smooth muscle layer, with MCP-1 and COX-2 mRNA increasing in parallel. Specific inhibition of JNK attenuated nicotine's effects. In conclusion, long-term exposure to nicotine up-regulated the expression of TLR4 and -6 via a JNK-related pathway, causing an exaggeration of the LPS-induced local airway inflammation and increased AHR. This might offer a mechanistic explanation to the increased AHR seen in tobacco smokers confronted with bacterial infections.
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Affiliation(s)
- Yuan Xu
- 1 Division of Ear, Nose and Throat Diseases, Department of CLINTEC, Karolinska Institutet, Karolinska University Hospital Stockholm, Sweden; and
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