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El-Hashim AZ, Khajah MA, Orabi KY, Balakrishnan S, Sary HG, Barakat AM. Treatment with onion bulb extract both prevents and reverses allergic inflammation in a murine model of asthma. PHARMACEUTICAL BIOLOGY 2024; 62:326-340. [PMID: 38584568 PMCID: PMC11003327 DOI: 10.1080/13880209.2024.2335187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 03/20/2024] [Indexed: 04/09/2024]
Abstract
CONTEXT Asthma presents a global health challenge. The main pharmacotherapy is synthetic chemicals and biological-based drugs that are costly, and have significant side effects. In contrast, use of natural products, such as onion (Allium cepa L., Amaryllidaceae) in the treatment of airway diseases has increased world-wide because of their perceived efficacy and little safety concerns. However, their pharmacological actions remain largely uncharacterized. OBJECTIVE We investigated whether onion bulb extract (OBE) can (1) reverse established asthma phenotype (therapeutic treatment) and/or (2) prevent the development of the asthma phenotype, if given before the immunization process (preventative treatment). MATERIALS AND METHODS Six groups of male Balb/c mice were established for the therapeutic (21 days) and five groups for the preventative (19 days) treatment protocols; including PBS and house dust mite (HDM)-challenged mice treated with vehicle or OBE (30, 60, and 100 mg/kg/i.p.). Airways inflammation was determined using cytology, histology, immunofluorescence, Western blot, and serum IgE. RESULTS Therapeutic (60 mg/kg/i.p.) and preventative (100 mg/kg/i.p.) OBE treatment resulted in down-regulation of HDM-induced airway cellular influx, histopathological changes and the increase in expression of pro-inflammatory signaling pathway EGFR, ERK1/2, AKT, pro-inflammatory cytokines and serum IgE. DISCUSSION AND CONCLUSION Our data show that OBE is an effective anti-inflammatory agent with both therapeutic and preventative anti-asthma effects. These findings imply that onion/OBE may be used as an adjunct therapeutic agent in established asthma and/or to prevent development of allergic asthma. However, further studies to identify the active constituents, and demonstrate proof-of-concept in humans are needed.
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Affiliation(s)
- Ahmed Z. El-Hashim
- Department of Pharmacology & Therapeutics, Faculty of Pharmacy, Kuwait University, Kuwait City, Kuwait
| | - Maitham A. Khajah
- Department of Pharmacology & Therapeutics, Faculty of Pharmacy, Kuwait University, Kuwait City, Kuwait
| | - Khaled Y. Orabi
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kuwait University, Kuwait City, Kuwait
| | - Sowmya Balakrishnan
- Department of Pharmacology & Therapeutics, Faculty of Pharmacy, Kuwait University, Kuwait City, Kuwait
| | - Hanan G. Sary
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kuwait University, Kuwait City, Kuwait
| | - Ahmad M. Barakat
- Department of Pharmacology & Therapeutics, Faculty of Pharmacy, Kuwait University, Kuwait City, Kuwait
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Sun Z, Liu K, Liang C, Wen L, Wu J, Liu X, Li X. Diosmetin as a promising natural therapeutic agent: In vivo, in vitro mechanisms, and clinical studies. Phytother Res 2024; 38:3660-3694. [PMID: 38748620 DOI: 10.1002/ptr.8214] [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: 11/08/2023] [Revised: 04/09/2024] [Accepted: 04/13/2024] [Indexed: 07/12/2024]
Abstract
Diosmetin, a natural occurring flavonoid, is primarily found in citrus fruits, beans, and other plants. Diosmetin demonstrates a variety of pharmacological activities, including anticancer, antioxidant, anti-inflammatory, antibacterial, metabolic regulation, cardiovascular function improvement, estrogenic effects, and others. The process of literature search was done using PubMed, Web of Science and ClinicalTrials databases with search terms containing Diosmetin, content, anticancer, anti-inflammatory, antioxidant, pharmacological activity, pharmacokinetics, in vivo, and in vitro. The aim of this review is to summarize the in vivo, in vitro and clinical studies of Diosmetin over the last decade, focusing on studies related to its anticancer, anti-inflammatory, and antioxidant activities. It is found that DIO has significant therapeutic effects on skin and cardiovascular system diseases, and its research in pharmacokinetics and toxicology is summarized. It provides the latest information for researchers and points out the limitations of current research and areas that should be strengthened in future research, so as to facilitate the relevant scientific research and clinical application of DIO.
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Affiliation(s)
- Zihao Sun
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Kai Liu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Chuipeng Liang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Lin Wen
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jijiao Wu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaolian Liu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaofang Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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3
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Rezaie J, Jahanghiri M, Heris RM, Hassannezhad S, Abdyazdani N, Rahbarghazi A, Ahmadi M. Melatonin reduces lung injury in type 1 diabetic mice by the modulation of autophagy. BMC Mol Cell Biol 2024; 25:7. [PMID: 38486170 PMCID: PMC10938779 DOI: 10.1186/s12860-024-00505-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Accepted: 03/06/2024] [Indexed: 03/17/2024] Open
Abstract
BACKGROUND In recent years, the role of autophagy has been highlighted in the pathogenesis of diabetes and inflammatory lung diseases. In this study, using a diabetic model of mice, we investigated the expression of autophagy-related genes in the lung tissues following melatonin administration. RESULTS Data showed histopathological remodeling in lung tissues of the D group coincided with an elevated level of IL-6, Becline-1, LC3, and P62 compared to the control group (p < 0.05). After melatonin treatment, histopathological remodeling was improved D + Mel group. In addition, expression levels of IL-6, Becline-1, LC3, and P62 were decreased in D + Mel compared to D group (P < 0.05). Statistically significant differences were not obtained between Mel group and C group (p > 0.05). CONCLUSION Our results showed that melatonin injection can be effective in the amelioration of lung injury in diabetic mice presumably by modulating autophagy-related genes.
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Affiliation(s)
- Jafar Rezaie
- Solid Tumor Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Mojtaba Jahanghiri
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Sina Hassannezhad
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nima Abdyazdani
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Afshin Rahbarghazi
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahdi Ahmadi
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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4
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PTEN: An Emerging Potential Target for Therapeutic Intervention in Respiratory Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:4512503. [PMID: 35814272 PMCID: PMC9262564 DOI: 10.1155/2022/4512503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 04/22/2022] [Accepted: 05/19/2022] [Indexed: 12/13/2022]
Abstract
Phosphatase and tensin homolog deleted on chromosome 10 (PTEN) is a potent tumor suppressor that regulates several key cellular processes, including proliferation, survival, genomic integrity, migration, and invasion, via PI3K-dependent and independent mechanisms. A subtle decrease in PTEN levels or catalytic activity is implicated not only in cancer but also in a wide spectrum of other diseases, including various respiratory diseases. A systemic overview of the advances in the molecular and cellular mechanisms of PTEN involved in the initiation and progression of respiratory diseases may offer novel targets for the development of effective therapeutics for the treatment of respiratory diseases. In the present review, we highlight the novel findings emerging from current research on the role of PTEN expression and regulation in airway pathological conditions such as asthma/allergic airway inflammation, pulmonary hypertension (PAH), chronic obstructive pulmonary disease (COPD), idiopathic pulmonary fibrosis (IPF), and other acute lung injuries (ALI). Moreover, we discuss the clinical implications of PTEN alteration and recently suggested therapeutic possibilities for restoration of PTEN expression and function in respiratory diseases.
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5
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Ren Y, Zhong X, Wang H, Chen Z, Liu Y, Zeng X, Ma Y. Chloroquine Attenuates Asthma Development by Restoring Airway Smooth Muscle Cell Phenotype Via the ROS-AKT Pathway. Front Pharmacol 2022; 13:916508. [PMID: 35721212 PMCID: PMC9198701 DOI: 10.3389/fphar.2022.916508] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 05/18/2022] [Indexed: 11/13/2022] Open
Abstract
Switching of airway smooth muscle (ASM) cell phenotype from differentiated-contractile to dedifferentiated-proliferative/synthetic state often occurs in asthmatic subjects with airway dysfunction. Evidence has been provided that chloroquine (an agonist of bitter taste receptors) presented benefits to ASM cell function implicated in asthma. However, the underlying mechanism is unclear. House dust mite (HDM)-sensitized mice were administered with chloroquine or dexamethasone before challenge. BALF and lung tissue were obtained for cell counting, histological analysis or ELISA. Primary cultured ASM cells were stimulated with transforming growth factor (TGF)-β1 or H2O2. Cells and supernatant were collected for the detection of ASM phenotype, ROS level, and proinflammatory cytokine production. In HDM-sensitized mice, chloroquine attenuated airway hyperresponsiveness (AHR), inflammation and remodeling with an inhibition of immunoglobulin E, IL-4/-13, and TGF-β1 in BALF. ASM cell proliferation (PCNA), hypertrophy (α-SMA), and parasecretion (MMP-9 and MMP-13) were strongly suppressed by chloroquine, hinting the rebalance of the heterogeneous ASM populations in asthmatic airway. Our data in vitro indicated that chloroquine markedly restrained maladaptive alteration in ASM phenotype in concert with a remission of ROS. Using H2O2 and PI3K inhibitor (LY294002), we found that the inhibition of oxidative stress level and ROS-AKT signal by chloroquine may serve as a potential mechanism that dedicates to the restoration of the phenotypic imbalance in ASM cells. Overall, the present findings suggested that chloroquine improves asthmatic airway function by controlling ASM cell phenotype shift, sketching a novel profile of chloroquine as a new therapeutic candidate for airway remodeling.
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Affiliation(s)
- Yan Ren
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Department of Medical Genetics, Nanjing University School of Medicine, Nanjing, China
| | - Xiuhua Zhong
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Hongyu Wang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zhongqi Chen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yanan Liu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,Department of Respiratory and Critical Care Medicine, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Xiaoning Zeng
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yuan Ma
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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6
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Borkar NA, Ambhore NS, Kalidhindi RSR, Pabelick CM, Prakash YS, Sathish V. Kisspeptins inhibit human airway smooth muscle proliferation. JCI Insight 2022; 7:152762. [PMID: 35420998 DOI: 10.1172/jci.insight.152762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 04/12/2022] [Indexed: 11/17/2022] Open
Abstract
Sex/gender disparity in asthma is recognized, and suggests a modulatory role for sex-steroids, particularly estrogen. However, studies including our own show a dichotomous role for estrogen in airway remodeling, making it unclear whether sex hormones are protective or detrimental in asthma, and suggesting a need to explore mechanisms upstream or independent of estrogen. We hypothesize that Kisspeptin (Kp)/KISS1R signaling serves this role. Airway smooth muscle (ASM) is a key structural cell type that contributes to remodeling in asthma. We explored the role of Kp/KISS1R in regulating ASM proliferation. We report novel data that Kp and KISS1R are expressed in human airways, especially ASM, with lower expression in ASM from females compared to males, and asthmatics showing lowest expression compared to non-asthmatics. Proliferation studies showed that cleaved forms of Kp, particularly Kp-10 mitigates PDGF-induced ASM proliferation. Pharmacological inhibition and shRNA knockdown of KISS1R increased basal ASM proliferation, further amplified by PDGF. The anti-proliferative effect of Kp-10 in ASM was found to be mediated by inhibition of MAPK-ERK-Akt pathways, with altered expression of PCNA, C/EBP-alpha, Ki-67, Cyclin-D1, and Cyclin-E leading to cell-cycle arrest at G0/G1 phase. Overall, we demonstrate the importance of Kp/KISS1R signaling in regulating ASM proliferation and a potentially novel therapeutic avenue to blunt remodeling in asthma.
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Affiliation(s)
- Niyati A Borkar
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, United States of America
| | - Nilesh Sudhakar Ambhore
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, United States of America
| | | | - Christina M Pabelick
- Department of Anesthesiology and Physiology, Mayo Clinic, Rochester, United States of America
| | - Y S Prakash
- Department of Anesthesiology and Physiology, Mayo Clinic, Rochester, United States of America
| | - Venkatachalem Sathish
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, United States of America
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7
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Huang J, Wang FH, Wang L, Li Y, Lu J, Chen J. LncRNA MALAT1 promotes proliferation and migration of airway smooth muscle cells in asthma by downregulating microRNA-216a. Saudi J Biol Sci 2021; 28:4124-4131. [PMID: 34354391 PMCID: PMC8324955 DOI: 10.1016/j.sjbs.2021.03.076] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 03/29/2021] [Accepted: 03/30/2021] [Indexed: 11/28/2022] Open
Abstract
Asthma is a difficult chronic airway inflammation, if it cannot be treated and relieved in time, it will seriously affect the health and quality of life of patients. Airway remodeling is relevant to asthma, but there is currently no effective treatment for airway remodeling. Regulating the biological function of airway smooth muscle cells (AMSCs) may be an important method to inhibit airway remodeling. LncRNA MALAT1 and microRNA-216a are involved in the regulation of AMSCs respectively, but there is no research to prove that they can regulate airway remodeling of asthma through mutual combination. Hence, the aim of the present study was performed to investigate the function of lncRNA MALAT1 and microRNA-216a on AMSCs in asthma. The relationship between lncRNA MALAT1, microRNA-216a and AMSCs was studied by MTT, qPCR, Western blot, Transwell and flow cytometry. The results revealed that lncRNA MALAT1 was up-regulated and microRNA-216a was down-regulated in asthma. lncRNA MALAT1 inhibited microRNA-216a targetedly. Whether downregulating lncRNA MALAT1 or upregulating microRNA-216a, cell proliferation, migration and invasion were reduced and apoptosis increased. Therefore, it is believed that lncRNA MALAT1 promotes proliferation and migration of asthma AMSCs by downregulating microRNA-216a. Since lncRNA MALAT1 and microRNA-216a take part in asthma by jointly regulating the proliferation of airway smooth muscle cells and other biological functions, it would be interesting to study if they become biomarkers of asthma, and relationship between the two in asthma diagnosis and poor prognosis.
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Affiliation(s)
- Jun Huang
- Qingdao Chengyang District People's Hospital, Qingdao, Shandong 266600, PR China
| | - Fang Hun Wang
- Qingdao Chengyang District People's Hospital, Qingdao, Shandong 266600, PR China
| | - Long Wang
- Qingdao Chengyang District People's Hospital, Qingdao, Shandong 266600, PR China
| | - Yong Li
- Qingdao Chengyang District People's Hospital, Qingdao, Shandong 266600, PR China
| | - Junlimeng Lu
- Department of Respiratory and Critical Medicine, QingDao Chengyang District People's Hospital, Qingdao, Shandong 266600, PR China
| | - JianYou Chen
- Qingdao Chengyang District People's Hospital, Qingdao, Shandong 266600, PR China
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8
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Wieczfinska J, Sitarek P, Kowalczyk T, Pawliczak R. Leonurus sibiricus root extracts decrease airway remodeling markers expression in fibroblasts. Clin Exp Immunol 2020; 202:28-46. [PMID: 32562256 DOI: 10.1111/cei.13481] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/27/2020] [Accepted: 06/12/2020] [Indexed: 12/15/2022] Open
Abstract
Bronchial asthma is believed to be provoked by the interaction between airway inflammation and remodeling. Airway remodeling is a complex and poorly understood process, and controlling it appears key for halting the progression of asthma and other obstructive lung diseases. Plants synthesize a number of valuable compounds as constitutive products and as secondary metabolites, many of which have curative properties. The aim of this study was to evaluate the anti-remodeling properties of extracts from transformed and transgenic Leonurus sibiricus roots with transformed L. sibiricus roots extract with transcriptional factor AtPAP1 overexpression (AtPAP1). Two fibroblast cell lines, Wistar Institute-38 (WI-38) and human fetal lung fibroblast (HFL1), were incubated with extracts from transformed L. sibiricus roots (TR) and roots with transcriptional factor AtPAP1 over-expression (AtPAP1 TR). Additionally, remodeling conditions were induced in the cultures with rhinovirus 16 (HRV16). The expressions of metalloproteinase 9 (MMP)-9, tissue inhibitor of metalloproteinases 1 (TIMP-1), arginase I and transforming growth factor (TGF)-β were determined by quantitative polymerase chain reaction (qPCR) and immunoblotting methods. AtPAP1 TR decreased arginase I and MMP-9 expression with no effect on TIMP-1 or TGF-β mRNA expression. This extract also inhibited HRV16-induced expression of arginase I, MMP-9 and TGF-β in both cell lines (P < 0·05) Our study shows for the first time to our knowledge, that transformed AtPAP1 TR extract from L. sibiricus root may affect the remodeling process. Its effect can be attributed an increased amount of phenolic acids such as: chlorogenic acid, caffeic acid or ferulic acid and demonstrates the value of biotechnology in medicinal research.
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Affiliation(s)
- J Wieczfinska
- Department of Immunopathology, Medical University of Lodz, Lodz, Poland
| | - P Sitarek
- Department of Biology and Pharmaceutical Botany, Medical University of Lodz, Lodz, Poland
| | - T Kowalczyk
- Department of Molecular Biotechnology and Genetics, University of Lodz, Lodz, Poland
| | - R Pawliczak
- Department of Immunopathology, Medical University of Lodz, Lodz, Poland
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9
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Asfour MH, Kassem AA, Salama A, Abd El-Alim SH. Hydrophobic ion pair loaded self-emulsifying drug delivery system (SEDDS): A novel oral drug delivery approach of cromolyn sodium for management of bronchial asthma. Int J Pharm 2020; 585:119494. [PMID: 32505578 DOI: 10.1016/j.ijpharm.2020.119494] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 05/29/2020] [Accepted: 05/30/2020] [Indexed: 01/01/2023]
Abstract
The aim of the present study is to develop a self-emulsifying drug delivery system (SEDDS) for the hydrophobic ion pair (HIP) complex of cromolyn sodium (CS), in order to enhance its intestinal absorption and biological activity. Two ion pairing agents (IPAs) were investigated: hexadecyl pyridininum chloride (HPC) and myristyl trimethyl ammonium bromide (MTAB). The optimum binding efficiency for complexation between investigated IPAs and CS was observed at a molar ratio of 1.5:1, where CS binding efficiency was found to be 76.10 ± 2.12 and 91.37 ± 1.73% for MTAB and HPC, respectively. The two prepared complexes exhibited a significant increase in partition coefficient indicating increased lipophilicity. The optimized CS-HIP complex was incorporated into SEDDS formulations. SEDDS formulations F2 (40% oleic acid, 40% BrijTM98, 20% propylene glycol) and F3 (25% oleic acid, 50% BrijTM98, 25% propylene glycol) exhibited nanometric droplet diameters with monodisperse distribution and nearly neutral zeta potential values. Ex vivo intestinal permeation study, using the non-everted gut sac technique, revealed a significantly higher cumulative amount of permeated drug, after 2 h, for F2 and F3 (53.836 and 77.617 µg/cm2, respectively) compared to 8.649 µg/cm2 for plain CS solution. The in vivo evaluation of plain CS solution compared to F2 and F3 was conducted in an ovalbumin sensitization-induced bronchial asthma rat model. Lung function parameters (tidal volume and peak expiratory flow), biochemical parameters (interleukin-5, immunoglobulin-E, myeloperoxidase and airway remodelling parameters) were assessed in addition to histopathological examination. The results indicated the superiority of F3 followed by F2 compared to plain CS solution for prophylaxis of bronchial asthma in rats.
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Affiliation(s)
- Marwa Hasanein Asfour
- Pharmaceutical Technology Department, National Research Centre, El-Buhouth St, Dokki, Cairo 12622, Egypt.
| | - Ahmed Alaa Kassem
- Pharmaceutical Technology Department, National Research Centre, El-Buhouth St, Dokki, Cairo 12622, Egypt
| | - Abeer Salama
- Pharmacology Department, National Research Centre, El-Buhouth St, Dokki, Cairo 12622, Egypt
| | - Sameh Hosam Abd El-Alim
- Pharmaceutical Technology Department, National Research Centre, El-Buhouth St, Dokki, Cairo 12622, Egypt
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10
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Yan Y, Liu L, Dou Z, Xu Y, Yan X. Soufeng Yuchuan decoction mitigates the ovalbumin-induced lung damage in a rat model of asthma. Biomed Pharmacother 2020; 125:109933. [PMID: 32036215 DOI: 10.1016/j.biopha.2020.109933] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 12/09/2019] [Accepted: 12/18/2019] [Indexed: 11/16/2022] Open
Abstract
Airway remodeling is a key feature of asthma. Extracellular matrix synthesis and vascular remodeling respectively regulated by transforming growth factor (TGF-β1) and vascular endothelial growth factor (VEGF), are important for the airway remodeling. This study aimed to investigate the effect of Soufeng Yuchuan (SFYC) decoction, a Traditional Chinese Medicine, on airway remodeling and expression of VEGF and TGF-β1 in asthma model rats. A rat model of asthma was induced by ovalbumin (OVA) treatment. The results showed that SFYC decoction improved general conditions and reduced the damage in lung tissues in asthma model rats. Furthermore, SFYC decoction significantly reduced the OVA-induced levels of VEGF and TGF-β1 in sera and in bronchoalveolar lavage fluid. Moreover, SFYC decoction decreased the OVA-induced VEGF mRNA and protein levels in lung tissues in asthma model rats. Interestingly, SFYC with high dose was more potent in reducing TGF-β1 level in rat sera and BALF than dexamethasone (positive control). In summary, SFYC decoction effectively mitigates lung damage in OVA-induced asthma model rats, which was associated with inhibition of VEGF and TGF-β1.
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Affiliation(s)
- Yongbin Yan
- Department of Paediatrics, The First Affiliated Hospital of Henan University of TCM, Zhengzhou, China
| | - Lingling Liu
- Department of Paediatrics, The First Affiliated Hospital of Henan University of TCM, Zhengzhou, China
| | - Ziying Dou
- Department of Paediatrics, The First Affiliated Hospital of Henan University of TCM, Zhengzhou, China.
| | - Yi Xu
- Department of Paediatrics, Henan University of TCM, Zhengzhou, China.
| | - Xiaoyu Yan
- Nanchang University School of Medicine, Nanchang, China
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11
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Jia XX, Zhu TT, Huang Y, Zeng XX, Zhang H, Zhang WX. Wnt/β-catenin signaling pathway regulates asthma airway remodeling by influencing the expression of c-Myc and cyclin D1 via the p38 MAPK-dependent pathway. Exp Ther Med 2019; 18:3431-3438. [PMID: 31602218 PMCID: PMC6777302 DOI: 10.3892/etm.2019.7991] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 08/12/2019] [Indexed: 12/28/2022] Open
Abstract
Airway remodeling is the main characteristic of asthma; however, the mechanisms underlying this pathophysiological change have not been fully elucidated. Previous studies have indicated that the Wnt/β-catenin and mitogen-activated protein kinase (MAPK) signaling pathway are involved in the development of airway remodeling during asthma. Therefore, the present study established an airway remodeling rat model, after which β-catenin, cyclin D1 and c-Myc protein expressions were analyzed via western blotting in the lung tissue and airway smooth muscle cells (ASMCs) of rats. The mRNA expression of the aforementioned proteins were evaluated via reverse transcription-quantitative PCR. β-catenin, cyclin D1 and c-Myc are core transcription factors and target genes of the Wnt/β-catenin and MAPK signaling pathways. Furthermore, β-catenin, c-Myc and cyclin D1 protein expression were determined following blocking of the p38 MAPK signaling pathway in vitro. The results demonstrated that higher expressions of β-catenin, cyclin D1 and c-Myc were detected in lung tissues and ASMCs in the asthma group compared with the control. Blocking the p38 MAPK signaling pathway with a specific inhibitor SB203580 also downregulated the expressions of β-catenin, cyclin D1 and c-Myc in vitro. Taken together, these results indicated that the Wnt/β-catenin signaling pathway may regulate the process of airway remodeling via the p38 MAPK-dependent pathway.
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Affiliation(s)
- Xiao-Xiao Jia
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
| | - Ting-Ting Zhu
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
| | - Yue Huang
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
| | - Xin-Xin Zeng
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
| | - Hong Zhang
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
| | - Wei-Xi Zhang
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
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12
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Anti-thymic stromal lymphopoietin antibody suppresses airway remodeling in asthma through reduction of MMP and CTGF. Pediatr Res 2019; 86:181-187. [PMID: 30464333 DOI: 10.1038/s41390-018-0239-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Accepted: 11/02/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Thymic stromal lymphopoietin (TSLP) mediates immune reaction in patients with asthma. Matrix metalloproteinase (MMP), connective tissue growth factor (CTGF), and transforming growth factor-β (TGF-β) are inflammatory mediators whose responses to the anti-TSLP antibody are unknown. This study examined the effect of an anti-TSLP antibody on MMP, CTGF, TGF-β, and airway structural changes in airway remodeling in asthma. METHODS Mice were randomly divided into phosphate-buffered-saline-challenged (PBS), ovalbumin-challenged (OVA), and ovalbumin-challenged with anti-TSLP antibody (OVA + anti-TSLP) groups. Airway responsiveness and serum ovalbumin-specific immunoglobulin E were measured. Differential cell counts and MMP-2 and MMP-9 were evaluated in bronchoalveolar lavage fluid (BALF). Airway structural changes were quantified using morphometric analysis and presentation by immunohistochemistry staining. Lung CTGF, TGF-β, and TSLP were analyzed using western blot. RESULTS Airway responsiveness was significantly lower in OVA + anti-TSLP and PBS groups than in OVA group. Airway structural changes exhibited less smooth muscle thickness in OVA + anti-TSLP and PBS groups than in OVA group. MMP-2 and MMP-9 in BALF and CTGF, TGF-β, and TSLP in lungs significantly decreased in OVA + anti-TSLP and PBS groups compared with OVA group. CONCLUSION Anti-TSLP antibody exerts the preventive effect of decreasing airway structural changes through reduction of MMP, TGF-β, and CTGF in airway remodeling of asthma.
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Huang Y, Wang L, Jia XX, Lin XX, Zhang WX. Vitamin D alleviates airway remodeling in asthma by down-regulating the activity of Wnt/β-catenin signaling pathway. Int Immunopharmacol 2019; 68:88-94. [PMID: 30616171 DOI: 10.1016/j.intimp.2018.12.061] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 12/25/2018] [Accepted: 12/27/2018] [Indexed: 01/04/2023]
Abstract
Vitamin D exerts a protective role in asthma; however, the molecular mechanisms underlying the vitamin D-attenuated asthma airway remodeling are yet to be elucidated. In this study, Sprague-Dawley (SD) rats were randomly divided into four groups: control, asthma, vitamin D 50 ng/mL, and vitamin D 100 ng/mL. The treatment with 100 ng/mL vitamin D remarkably reduced the thickness of the airway smooth muscle, collagen deposition, and the alpha-smooth muscle actin (α-SMA) mass and airway inflammation. Conversely, the treatment by vitamin D significantly up-regulated the serum levels of 25(OH)2D3 that were decreased in asthma. The putative signaling pathway of vitamin D was based on Wnt5a and β-catenin expression assessed by quantitative real-time reverse transcription polymerase chain reaction (RT-qPCR) and Western blot, which revealed that the administration of vitamin D significantly decreased the activity of Wnt/β-catenin signaling pathway. These results suggested that administration of vitamin D alleviated the airway remodeling in asthma by down-regulating the activity of Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Yue Huang
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Lei Wang
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Xiao-Xiao Jia
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Xi-Xi Lin
- Department of Pharmacy, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.
| | - Wei-Xi Zhang
- Department of Pediatric Allergy and Immunology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.
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Luo J, Zhang L, Zhang X, Long Y, Zou F, Yan C, Zou W. Protective effects and active ingredients of Salvia miltiorrhiza Bunge extracts on airway responsiveness, inflammation and remodeling in mice with ovalbumin-induced allergic asthma. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2019; 52:168-177. [PMID: 30599896 DOI: 10.1016/j.phymed.2018.09.170] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 07/24/2018] [Accepted: 09/17/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Salvia miltiorrhiza Bunge (S. miltiorrhiza), a traditional Chinese medicine, has demonstrated antioxidant, anti-inflammatory, and antibacterial activities. However, its effects against asthma that shows chronic inflammation and oxidative damage remain unknown. PURPOSE To assess the effects of S. miltiorrhiza extracts on airway responsiveness, inflammation, and remodeling in ovalbumin (OVA)-induced asthmatic mice. METHODS Mice with ovalbumin (OVA)-induced allergic asthma were treated with S. miltiorrhiza extracts, and airway resistance (RL) to methacholine, inflammatory cell infiltration, Th1/Th2 cytokine levels, and airway remodeling were assessed. TGF-β1-induced BEAS-2B and MRC-5 cells were used to evaluate the effects of five S. miltiorrhiza compounds on epithelial-mesenchymal transition and fibrosis. RESULTS OVA-challenge resulted in remarkably increased RL, inflammatory cell infiltration, Th1/Th2 cytokine levels in BALF, goblet cell hyperplasia, collagen deposition, and airway wall thickening. Daily treatment with S. miltiorrhiza ethanolic (EE, 246 mg/kg) or water (WE, 156 mg/kg) extract significantly reduced OVA-induced airway inflammatory cell infiltration, Th1/Th2 cytokine amounts, and goblet cells hyperplasia. However, only WE remarkably decreased RL, collagen deposition, and airway wall thickening. Moreover, Chromatography showed that salvianic acid A and caffeic acid levels were much higher in WE than EE, while rosmarinic acid was slightly lower; salvianolic acid B and tanshinone IIA levels were much higher in EE than WE. Interestingly, caffeic acid and rosmarinic acid were more potent in reducing E-cadherin and vimentin levels in TGF-β1-induced BEAS-2B cells, and α-SMA and COL1A1 amounts in TGF-β1-induced MRC-5 cells. CONCLUSIONS Both S. miltiorrhiza WE and EE alleviate airway inflammation in mice with OVA-sensitized allergic asthma. S. miltiorrhiza WE is more potent in reducing responsiveness and airway remodeling.
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Affiliation(s)
- Junming Luo
- The Second Affiliated Hospital of Nanchang University, No. 1 Minde Avenue, Donghu Dist., Nanchang 330006, People's Republic of China
| | - Li Zhang
- Hunan Provincal Maternal and Child Health Hospital, No.53 Xiangchun Road, Changsha 410008, People's Republic of China
| | - Xinyi Zhang
- The Second Affiliated Hospital of Nanchang University, No. 1 Minde Avenue, Donghu Dist., Nanchang 330006, People's Republic of China
| | - Yingying Long
- The Second Affiliated Hospital of Nanchang University, No. 1 Minde Avenue, Donghu Dist., Nanchang 330006, People's Republic of China
| | - Fang Zou
- The Second Affiliated Hospital of Nanchang University, No. 1 Minde Avenue, Donghu Dist., Nanchang 330006, People's Republic of China
| | - Chunsong Yan
- The Second Affiliated Hospital of Nanchang University, No. 1 Minde Avenue, Donghu Dist., Nanchang 330006, People's Republic of China..
| | - Wei Zou
- Hunan Provincal Maternal and Child Health Hospital, No.53 Xiangchun Road, Changsha 410008, People's Republic of China.
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Wen X, Yan J, Han XR, Zheng GH, Tang R, Liu LF, Wu DM, Lu J, Zheng YL. PTEN gene silencing contributes to airway remodeling and induces airway smooth muscle cell proliferation in mice with allergic asthma. J Thorac Dis 2018; 10:202-211. [PMID: 29600050 DOI: 10.21037/jtd.2017.12.104] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background Allergic asthma is a complex genetic disorder that involves interactions between genetic and environmental factors. Usage of PTEN may be a good therapeutic strategy for the management of allergic inflammation. Thus, the present study aims to explore the effects of phosphatase and tensin homolog (PTEN) gene silencing on airway remodeling and proliferation of airway smooth muscle cells (ASMCs) in a mouse model of allergic asthma. Methods A total of 56 healthy female BABL/c mice (weighing between 16 to 22 grams) were selected and were assigned on random into ovalbumin (OVA; mice were stimulated with OVA to induce allergic asthma), OVA + si-PTEN, normal saline (NS; mice were treated with normal saline) and NS + si-PTEN groups. Masson staining was employed in order to observe lung tissue sections. Immunohistochemical staining was used to detect the expression of α-SMA+. Gene silencing was conducted in the NS + si-PTEN and OVA + si-PTEN groups. Quantitative reverse transcription polymerase chain reaction (qRT-PCR) and western blotting were used to detect the mRNA and protein expressions of PTEN in ASMCs of each group. CCK-8 assay and flow cytometry were performed to determine the cell proliferation rate and cell cycle. Results Airway remodeling and changes of smooth muscle layer were found in allergic asthmatic mice with thick airway walls. The expression of alpha smooth muscle actin (α-SMA+) was significantly higher in ASMCs of the OVA, OVA + si-PTEN and NS + si-PTEN groups compared with ASMCs of the NS group. The mRNA and protein expressions of PTEN reduced in the OVA, OVA + si-PTEN and NS + si-PTEN groups. The rate of ASMCs proliferation in OVA, OVA + si-PTEN and NS + si-PTEN groups were significantly higher than the NS group. The proportion of ASMCs in S and G2 stages increased, while the number of cells in the G1 stage decreased after PTEN gene silencing. Conclusions These results demonstrated that PTEN gene silencing might promote proliferation of ASMCs and airway remodeling in a mouse model of allergic asthma.
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Affiliation(s)
- Xin Wen
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou 221116, China
| | - Jing Yan
- Emergency Center, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221009, China
| | - Xin-Rui Han
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou 221116, China
| | - Gui-Hong Zheng
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou 221116, China
| | - Ran Tang
- Department of Respiratory Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou 310003, China
| | - Li-Fang Liu
- Department of Respiratory Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou 310003, China
| | - Dong-Mei Wu
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou 221116, China
| | - Jun Lu
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou 221116, China
| | - Yuan-Lin Zheng
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou 221116, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou 221116, China
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Dultra FKAA, Tavares A, Dultra JDA, Salles C, Crusoé-Rebelo IM, Barbosa I, Souza-Machado A. Pharyngeal airspace of asthmatic individuals and those suffering from obstructive sleep apnea syndrome: Study by CBCT. Eur J Radiol 2017; 95:342-348. [PMID: 28987691 DOI: 10.1016/j.ejrad.2017.09.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 08/31/2017] [Accepted: 09/01/2017] [Indexed: 10/18/2022]
Abstract
PURPOSE The objective of the present study was to comparatively evaluate the oropharyngeal space of patients with obstructive sleep apnea syndrome (OSA) and asthma by means of Cone Beam Computed Tomography (CBCT) images. MATERIAL AND METHODS The study included individuals with OSA and asthma (n=10), with OSA and without asthma (n=6), asthmatics without OSA (n=6) and healthy individuals (n=25). All patients were evaluated by a pneumologist and submitted to a nocturnal polysomnogram. Participants underwent CBCT examinations using an I-CAT® device (Imaging Sciences International, Hatfield, PA, U.S.A.) and all images were exported to Dolphin Image 3D® software. Cephalometric measurements were taken, as well as measurements of length (C), volume (VOL), sagittal area (SA) and minimum cross-sectional area (MCA); an evaluation was made of the format and contour of the upper airway in three dimensions, with p<0.05 considered significant. RESULTS In the results of the present study, a statistically significant difference was found between VOL, SA and MCA (p=0.011; p=0.009; p=0.010) with reduced elevated values among the OSA+Asthma, OSA, Asthma and Control groups. Significant differences were seen between the linear (AP), cross-sectional (TR) and mean transverse area (TA) measurements in the group of patients with OSA and asthma as compared to the control group. In the control group, the greatest narrowing of the airway was observed either in the retroglossal or retropalatal area, while more patients in the experimental groups showed narrowing in the retropalatal area. CONCLUSION The condition of OSA+asthma was associated with a substantial reduction in upper airway measurements in comparison to controls.
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Affiliation(s)
- Fátima Karoline Araújo Alves Dultra
- Metropolitan Union of Education and Culture (UNIME), PhD in Processes of Organs and Systems and Master in Dentistry - Bahia Federal University (UFBA), Rua Barão de Loreto, Edf Barão de Coubertin, n. 519, Graça, Bahia, 40150270, Brazil.
| | - Alana Tavares
- Orthodontics - Bahia Federal University (UFBA),Masters' Student in Odontology and Health - UFBA, Rua Priscila Dultra, n. 1229, Lauro de Freitas, Bahia, 42700000, Brazil.
| | - Joaquim de Almeida Dultra
- State University of Southwest Bahia (UESB), PhDs' Student in Odontology and Health - UFBA, Master in Dentistry, Rua Barão de Loreto, Edf Barão de Coubertin, n. 519, Graça, Bahia, 40150270, Brazil.
| | - Cristina Salles
- Bahiana School of Medicine and Public Health (EBMSPD), Preceptor at University Hospital Professor Edgard Santos, PhD in Medicine and Health, Master in Internal Medicine, Salvador, Bahia, Brazil; Av. Professor Magalhães net, 1541, Hospital da Bahia, sala 2010, Pituba, Salvador, Bahia, 41810011, Brazil.
| | - Iêda Margarida Crusoé-Rebelo
- Bahia Federal University (UFBA), Specialist in Radiology, PhD and Master in Dentistry at UFBA, Avenida Araújo Pinho, n. 62, Canela, Salvador, Bahia, 40110140, Brazil.
| | - Inessa Barbosa
- Orthodontics - Bahia Federal University (UFBA), PhDs' student and Master in Odontology and Health - UFBA, Avenida Araújo Pinho, n. 62, Canela, Salvador, Bahia, 40110140, Brazil.
| | - Adelmir Souza-Machado
- Sciences and Health Institute, Federal University of Bahia (UFBA), PhD and Master in Medicine and Health at UFBA, Av. Reitor Miguel Calmon s/n priemiro andar, Canela, Salvador, Bahia, 40500020, Brazil.
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Bone marrow mesenchymal stem cells and their conditioned media could potentially ameliorate ovalbumin-induced asthmatic changes. Biomed Pharmacother 2016; 85:28-40. [PMID: 27930984 DOI: 10.1016/j.biopha.2016.11.127] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 11/20/2016] [Accepted: 11/27/2016] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The major feature of asthma is governed by chronic airway inflammation. This investigation was proposed to achieve the suitable candidate for ameliorating long-term chronic asthmatic changes of respiratory tract. METHODS 36 rats were classified into healthy (C) and ovalbumin (OVA)-sensitized animals (S). To sensitize, the rats were exposed to OVA over a course of 32±1days. One day after sensitization, equal six different groups were subjected to experimental procedure (n=6); Rats only received intratracheally 50ml PBS (CPT and SPT groups), 50μl conditioned medium (CM) (CST and SST groups) and 50μl PBS containing 2×106 rat bone marrow-derived mesenchymal stem cells (rBMMSCs) (CCT and SCT groups). Two weeks after treatment, tracheal responsiveness, immunologic responses and recruitment of rBMMSCs into the lung as well as pathological changes were evaluated. RESULTS A high degree of tracheal responsiveness, total white blood cell and percentages of eosinophil and neutrophil was significantly recorded in all sensitized groups rather than of controls (p<0.001 to p<0.05). Of interest, all above-mentioned parameters decreased significantly in SST and notably SCT groups as compared to S group (p<0.001 to p<0.05). The results revealed decrease number of blood CD3+CD4+ and concurrent increase in CD3+CD8+ in all sensitized rats as compared to control (p<0.001 to p<0.05). Noticeably, no significant modulatory effects of either cell or CM administration were achieved on the CD3+CD4+ and CD3+CD8+ populations in non-asthmatic rats. Moreover, the number of CD3+CD4+ in SST and SCT groups tended to increase, which coincided with a decreased manner of CD3+CD8+ populations as compared with S group (p<0.001 to p<0.05). However, the CD3+CD4+ cells in SCT rats were significantly higher than the group SST (p<0.01) whereas CD3+CD8+ cells diminished simultaneously (p<0.001). Real-time PCR analysis further showed that both CM and particularly MSCs changed the expression of interleukin (IL)-4 and IL-10 in the asthmatic groups to the near level of control rats (p<0.001 to p<0.05). Histopathological analysis revealed a profound reduction of lungs injuries in asthmatic rats when received CM and peculiarly mesenchymal stem cells (p<0.01 to p<0.05). CONCLUSION Our study shed light on the superior effects of rBMMSCs, rather than CM, in attenuating of chronic asthmatic changes in the rat model.
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Chauhan PS, Singh R. Ovalbumin-induced allergic inflammation lead to structural alterations in mouse model and protective effects of intranasal curcumin: A comparative study. Allergol Immunopathol (Madr) 2016; 44:246-56. [PMID: 27046748 DOI: 10.1016/j.aller.2016.01.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 12/22/2015] [Accepted: 01/03/2016] [Indexed: 11/28/2022]
Abstract
BACKGROUND Antigen exposure and persistent inflammation leads to structural changes in the asthmatic airways which are collectively termed as "airway remodelling". Presently available asthma medications ameliorate inflammations but are unable to prevent or reverse the airway remodelling process as most of the treatment strategies are only focused on inflammation instead of remodelling. METHODS Curcumin, a phytochemical present in the rhizome of Curcuma longa is well known for its anti-inflammatory activity; however, the main drawback is its poor bioavailability which limits its therapeutic approval. So, the effect of nasal curcumin on acute and chronic asthma has been studied where short exposure to ovalbumin (4 days) represents acute phase whereas repeated exposures for longer (twice per week till 5 weeks) represents chronic asthma. Disodium cromoglycate (DSCG, 50mg/kg, i.p.) and dexamethasone (1mg/kg, i.p.) were used as standard drugs in acute and chronic model of asthma respectively. RESULTS OVA-induced airway inflammation initiated in acute stage led to remodelling due to persistent inflammation, epithelial and sub epithelial thickening (smooth muscle thickening), extracellular matrix (ECM) deposition, goblet cell hyperplasia and mucus plug formation. Intranasal curcumin is effective in inhibiting airway inflammation and remodelling both by maintaining the structural integrity of lungs in terms of inflammation, airway wall thickening and mucus production. CONCLUSION Our findings suggest that curcumin administered through nasal route might prove therapeutically efficient in inhibiting allergic airway inflammations and maintaining structural integrity in the mouse model of allergic asthma. This may lead to the development of curcumin aerosol in near future.
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Affiliation(s)
- P S Chauhan
- Department of Zoology, MMV, Banaras Hindu University, Varanasi 221005, India
| | - R Singh
- Department of Zoology, MMV, Banaras Hindu University, Varanasi 221005, India.
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Boskabady MH, Jalali S. Effect of Zataria multiflora Extract on Total and Differential White Blood Cell Count and Endothelin Level in Blood of Ovalbumin Sensitized Guinea Pigs. Chin J Integr Med 2016; 26:604-608. [PMID: 26825085 DOI: 10.1007/s11655-015-2129-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/24/2012] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To investigate the effect of hydro-ethanolic extract of Zataria multiflora (Z. multiflora) on endothelin level, total and differential white blood cells (WBC) count of sensitized guinea pigs. METHODS Five groups of guinea pigs sensitized to ovalbumin (OA) were given drinking water alone (group S), drinking water containing three concentrations of Z. multiflora (0.2, 0.4 and 0.8 mg/mL as groups S+Z1, S+Z2 and S+Z3) and dexamethasone (group S+D), n=6 for each group. The endothelin levels as well as total and differential WBC count in blood of sensitized and control guinea pigs were evaluated using enzyme linked immunosorbent assay method, and hemocytometer and Wright-Giemsa's staining of blood sample smear respectively. RESULTS Blood endothelin levels, total and most differential WBC count were increased but lymphocytes decreased in sensitized animals compared to controls (allP <0.01). In groups S+D, S+Z2 and S+Z3 endothelin level, total and differential WBC counts were significantly improved compared with group S (P <0.01). Although, all measured parameters in group S+Z1 was lower than group S+D (P <0.01), some parameters in group S+Z3 were greater than in group S+D (P <0.05 toP <0.01). CONCLUSION The results showed an anti-inflammatory effect of Z. multiflora extract in sensitized guinea pigs, which may suggest a therapeutic potential for the plant on asthma.
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Affiliation(s)
- Mohammad Hossein Boskabady
- Neurogenic Inflammation Research Center and Department of Physiology, School of Medicine, Mashhad, Iran.
| | - Sediqeh Jalali
- Department of Biology, Payam Noor University, Tehran, Iran
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Ge A, Liu Y, Zeng X, Kong H, Ma Y, Zhang J, Bai F, Huang M. Effect of diosmetin on airway remodeling in a murine model of chronic asthma. Acta Biochim Biophys Sin (Shanghai) 2015; 47:604-11. [PMID: 26033789 DOI: 10.1093/abbs/gmv052] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Accepted: 04/17/2015] [Indexed: 11/14/2022] Open
Abstract
Bronchial asthma, one of the most common allergic diseases, is characterized by airway hyperresponsiveness (AHR), inflammation, and remodeling. The anti-oxidant flavone aglycone diosmetin ameliorates the inflammation in pancreatitis, but little is known about its impact on asthma. In this study, the effects of diosmetin on chronic asthma were investigated with an emphasis on the modulation of airway remodeling in BALB/c mice challenged with ovalbumin (OVA). It was found that diosmetin significantly relieved inflammatory cell infiltration, goblet cell hyperplasia, and collagen deposition in the lungs of asthmatic mice and notably reduced AHR in these animals. The OVA-induced increases in total cell and eosinophil counts in bronchoalveolar lavage fluid were reversed, and the level of OVA-specific immunoglobulin E in serum was attenuated by diosmetin administration, implying an anti-Th2 activity of diosmetin. Furthermore, diosmetin remarkably suppressed the expression of smooth muscle actin alpha chain, indicating a potent anti-proliferative effect of diosmetin on airway smooth muscle cells (ASMCs). Matrix metallopeptidase-9, transforming growth factor-β1, and vascular endothelial growth factor levels were also alleviated by diosmetin, suggesting that the remission of airway remodeling might be attributed to the decline of these proteins. Taken together, our findings provided a novel profile of diosmetin with anti-remodeling therapeutic benefits, highlighting a new potential of diosmetin in remitting the ASMC proliferation in chronic asthma.
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Affiliation(s)
- Ai Ge
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Yanan Liu
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Xiaoning Zeng
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Hui Kong
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Yuan Ma
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Jiaxiang Zhang
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Fangfang Bai
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Mao Huang
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
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Lu J, Zhu Y, Feng W, Pan Y, Li S, Han D, Liu L, Xie X, Wang G, Li M. Platelet-derived growth factor mediates interleukin-13-induced collagen I production in mouse airway fibroblasts. J Biosci 2015; 39:693-700. [PMID: 25116623 DOI: 10.1007/s12038-014-9454-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Interleukin-13 (IL-13) is associated with the production of collagen in airway remodelling of asthma. Yet, the molecular mechanisms underlying IL-13 induction of collagen remain unclear; the aim of this study is to address this issue. IL-13 dose- and time-dependently-induced collagen I production in primary cultured airway fibroblasts; this was accompanied with the STAT6 phosphorylation, and pre-treatment of cells with JAK inhibitor suppressed IL-13- induced collagen I production. Further study indicated that IL-13 stimulated JAK/STAT6-dependent PDGF production and subsequent ERK1/2 MAPK activation in airway fibroblasts, and the presence of either PDGF receptor blocker or MEK inhibitor partially suppressed IL-13-induced collagen I production. Taken together, our study suggests that activation of JAK/STAT6 signal pathway and subsequent PDGF generation and resultant ERK1/2 MAPK activation mediated IL-13-induced collagen I production in airway fibroblasts.
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Affiliation(s)
- Jiamei Lu
- Respiratory Diseases Research Center, and Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi'an Jiaotong University, Xi'an, Shaanxi, 710004, P.R. China
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Rodrigues-Machado MG, Magalhães GS, Cardoso JA, Kangussu LM, Murari A, Caliari MV, Oliveira ML, Cara DC, Noviello MLM, Marques FD, Pereira JM, Lautner RQ, Santos RAS, Campagnole-Santos MJ. AVE 0991, a non-peptide mimic of angiotensin-(1-7) effects, attenuates pulmonary remodelling in a model of chronic asthma. Br J Pharmacol 2014; 170:835-46. [PMID: 23889691 DOI: 10.1111/bph.12318] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 06/20/2013] [Accepted: 07/17/2013] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND AND PURPOSE AVE 0991 (AVE) is a non-peptide compound, mimic of the angiotensin (Ang)-(1-7) actions in many tissues and pathophysiological states. Here, we have investigated the effect of AVE on pulmonary remodelling in a murine model of ovalbumin (OVA)-induced chronic allergic lung inflammation. EXPERIMENTAL APPROACH We used BALB/c mice (6-8 weeks old) and induced chronic allergic lung inflammation by OVA sensitization (20 μg·mouse(-1) , i.p., four times, 14 days apart) and OVA challenge (1%, nebulised during 30 min, three times per·week, for 4 weeks). Control and AVE groups were given saline i.p and challenged with saline. AVE treatment (1 mg·kg(-1) ·per day, s.c.) or saline (100 μL·kg(-1) ·per day, s.c.) was given during the challenge period. Mice were anaesthetized 72 h after the last challenge and blood and lungs collected. In some animals, primary bronchi were isolated to test contractile responses. Cytokines were evaluated in bronchoalveolar lavage (BAL) and lung homogenates. KEY RESULTS Treatment with AVE of OVA sensitised and challenged mice attenuated the altered contractile response to carbachol in bronchial rings and reversed the increased airway wall and pulmonary vasculature thickness and right ventricular hypertrophy. Furthermore, AVE reduced IL-5 and increased IL-10 levels in the BAL, accompanied by decreased Ang II levels in lungs. CONCLUSIONS AND IMPLICATIONS AVE treatment prevented pulmonary remodelling, inflammation and right ventricular hypertrophy in OVA mice, suggesting that Ang-(1-7) receptor agonists are a new possibility for the treatment of pulmonary remodelling induced by chronic asthma.
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Affiliation(s)
- M G Rodrigues-Machado
- National Institute of Science and Technology in Nanobiopharmaceutics (INCT-NANOBIOFAR), Department of Physiology and Biophysics, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
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Chauhan PS, Subhashini, Dash D, Singh R. Intranasal curcumin attenuates airway remodeling in murine model of chronic asthma. Int Immunopharmacol 2014; 21:63-75. [DOI: 10.1016/j.intimp.2014.03.021] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 03/22/2014] [Accepted: 03/31/2014] [Indexed: 11/17/2022]
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Lu J, Liu L, Zhu Y, Zhang Y, Wu Y, Wang G, Zhang D, Xu J, Xie X, Ke R, Han D, Li S, Feng W, Xie M, Liu Y, Fang P, Shi H, He P, Liu Y, Sun X, Li M. PPAR-γ inhibits IL-13-induced collagen production in mouse airway fibroblasts. Eur J Pharmacol 2014; 737:133-9. [PMID: 24858619 DOI: 10.1016/j.ejphar.2014.05.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 05/02/2014] [Accepted: 05/07/2014] [Indexed: 01/15/2023]
Abstract
Interleukin-13 (IL-13) plays an important role in extracellular matrix production of airway remodeling in asthma. Activation of PPAR-γ has been shown to inhibit the occurrence of airway fibrosis in asthma, yet it remains unknown whether the effect of PPAR-γ on suppression of airway fibrosis is associated with the inhibition of IL-13 signaling. In the present study, primary cultured airway fibroblasts were stimulated with IL-13, and JAK inhibitor, PDGF receptor blocker and MEK inhibitor were applied to investigate the involvement of these pathways in IL-13-induced collagen production. Our results demonstrate that IL-13 dose- and time-dependently induced collagen production in primary cultured mouse airway fibroblasts; this effect was blocked by inhibition of JAK/STAT6 signal pathway. IL-13 also stimulated JAK/STAT6-dependent PDGF production, elevation of PDGF in turn activated ERK1/2 MAPK and caused collagen production. Activation of PPAR-γ by rosiglitazone reduced IL-13-induced collagen expression by suppression of STAT6-driven PDGF production. Our results indicate that activation of JAK/STAT6 signal and subsequent PDGF generation and ERK1/2 MAPK activation mediate IL-13-induced collagen production in airway fibroblasts. This study suggests that activation of PPAR-γ might be a novel strategy for the treatment of asthma partially by inhibition of airway fibrosis.
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Affiliation(s)
- Jiamei Lu
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Lu Liu
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Yanting Zhu
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Yonghong Zhang
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Yuanyuan Wu
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Guizuo Wang
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Dexin Zhang
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Jing Xu
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Xinming Xie
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Rui Ke
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Dong Han
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Shaojun Li
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Wei Feng
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Mei Xie
- Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Yun Liu
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Ping Fang
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Hongyang Shi
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Ping He
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Yuan Liu
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Xiuzhen Sun
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China
| | - Manxiang Li
- Respiratory Diseases Research Center, Xi׳an Jiaotong University, Shaanxi, Xi׳an 710004, PR China; Department of Respiratory Medicine, The Second Affiliated Hospital of Medical College, Xi׳an Jiaotong University, No. 157, West 5th Road, Shaanxi, Xi׳an 710004, PR China.
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Yang ZC, Yi MJ, Ran N, Wang C, Fu P, Feng XY, Xu L, Qu ZH. Transforming growth factor-β1 induces bronchial epithelial cells to mesenchymal transition by activating the Snail pathway and promotes airway remodeling in asthma. Mol Med Rep 2013; 8:1663-8. [PMID: 24126595 DOI: 10.3892/mmr.2013.1728] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2013] [Accepted: 09/04/2013] [Indexed: 11/06/2022] Open
Abstract
Airway remodeling is characterized by airway wall thickening, subepithelial fibrosis, increased smooth muscle mass, angiogenesis and an increase in mucous glands, which may lead to a chronic and obstinate asthma with pulmonary function depression. In the present study, we observed substantially thickened lung tissue with extensive fibrosis in ovalbumin-sensitized mice, which was interrelated with transforming growth factor-β1 (TGF-β1) expression in bronchoalveolar lavage fluid. In vitro experiments further demonstrated that TGF-β1 resulted in epithelial-mesenchymal transition (EMT) in bronchial epithelial cells, which was characterized by the expected decrease in E-cadherin expression and the increase in vimentin and α-smooth muscle actin expression, as well as the associated increase in Snail expression at mRNA and protein levels. Furthermore, the downregulation of Snail by small interfering RNA (siRNA) attenuated the TGF-β1‑induced EMT-like phenotype. Of note, a significantly increased synthesis of fibronectin was observed following TGF-β1 treatment, which further supported the hypothesis that EMT is a pivotal factor in peribronchial fibrosis. In combination, the results indicated that myofibroblasts deriving from bronchial epithelial cells via EMT may contribute to peribronchial fibrosis and that Snail may be an important factor in this phenomenon.
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Affiliation(s)
- Zhao-Chuan Yang
- Department of Child Health Care, The Affiliated Hospital of Qingdao University Medical College, Qingdao, Shandong 266003, P.R. China
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Qu ZH, Yang ZC, Chen L, Lv ZD, Yi MJ, Ran N. Inhibition airway remodeling and transforming growth factor-β1/Smad signaling pathway by astragalus extract in asthmatic mice. Int J Mol Med 2012; 29:564-8. [PMID: 22200784 PMCID: PMC3577142 DOI: 10.3892/ijmm.2011.868] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2011] [Accepted: 12/02/2011] [Indexed: 12/17/2022] Open
Abstract
Airway remodeling is characterized by airway wall thickening, subepithelial fibrosis, increased smooth muscle mass, angiogenesis and increased mucous glands, which can lead to a chronic and obstinate asthma with pulmonary function depression. In the present study, we investigated whether the astragalus extract inhibits airway remodeling in a mouse asthma model and observed the effects of astragalus extract on the transforming growth factor-β1 (TGF-β1)/Smad signaling pathway in ovalbumin-sensitized mice. Mice were sensitized and challenged by ovalbumin to establish a model of asthma. Treatments included the astragalus extract and budesonide. Lung tissues were obtained for hematoxylin and eosin staining and Periodic acid-Schiff staining after the final ovalbumin challenge. Levels of TGF-β1 were assessed by immunohistology and ELISA, levels of TGF-β1 mRNA were measured by RT-PCR, and levels of P-Smad2/3 and T-Smad2/3 were assessed by western blotting. Astragalus extract and budesonide reduced allergen-induced increases in the thickness of bronchial airway and mucous gland hypertrophy, goblet cell hyperplasia and collagen deposition. Levels of lung TGF-β1, TGF-β1 mRNA and P-Smad2/3 were significantly reduced in mice treated with astragalus extract and budesonide. Astragalus extract improved asthma airway remodeling by inhibiting the expression of the TGF-β1/Smad signaling pathway, and may be a potential drug for the treatment of patients with a severe asthma airway.
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Affiliation(s)
- Zheng-Hai Qu
- Department of Pediatrics, The Affiliated Hospital of Qingdao University Medical College, Qingdao 266003, Shandong Province, PR China.
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Zhang WX, Liang YF, Wang XM, Nie Y, Chong L, Lin L, Chen C, Li CC. Urotensin upregulates transforming growth factor-β1 expression of asthma airway through ERK-dependent pathway. Mol Cell Biochem 2012; 364:291-8. [PMID: 22270542 DOI: 10.1007/s11010-012-1229-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2011] [Accepted: 01/04/2012] [Indexed: 12/22/2022]
Abstract
Airway smooth muscle cells (ASMCs) play a key role in the process of asthma airway remodeling. Urotensin II (UII) and transforming growth factor (TGF)-β are potent mitogens for ASMCs proliferation. The study was aimed to determine whether UII-upregulated TGF-β-mediated ASMCs proliferation and extracellular signal-regulated kinase (ERK) was required for such an effect. OVA-sensitized rats were challenged to induce asthma. Lung morphology and airway dynamic parameters were monitored. ASMCs from control and asthma rats were purified for the measurement of UII and TGF-β1 expression. In vitro experiments were conducted to determine the direct effect of UII on TGF-β1 expression by ASMCs. Finally, U0126, an ERK inhibitor was used to examine the role of ERK pathway in UII mediated TGF-β1 upregulation. We found that both UII and TGF-β1 were upregulated in asthma lung tissues. In vitro study on ASMCs further revealed that UII may render its effect on ASMCs cells through the upregulation of TGF-β1. Data also supported the conclusion that ERK pathway was required, but not sufficient in UII-induced TGF-β1 upregulation. The current study provides new evidence that UII is involved in the TGF-β mediated mitogenic effect on ASMCs. UII, at least partially, uses ERK pathway to render such effect.
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Affiliation(s)
- Wei-Xi Zhang
- Department of Pediatric Pulmonology, The Second Affiliated Hospital & Yuying Children's Hospital, Wenzhou Medical College, Wenzhou 325027, Zhejiang, China
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Roth M. Is there a regulatory role of immunoglobulins on tissue forming cells relevant in chronic inflammatory lung diseases? J Allergy (Cairo) 2011; 2011:721517. [PMID: 22121383 PMCID: PMC3216316 DOI: 10.1155/2011/721517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Accepted: 08/29/2011] [Indexed: 11/17/2022] Open
Abstract
Epithelial cells, fibroblasts and smooth muscle cells together form and give structure to the airway wall. These three tissue forming cell types are structure giving elements and participate in the immune response to inhaled particles including allergens and dust. All three cell types actively contribute to the pathogenesis of chronic inflammatory lung diseases such as asthma and chronic obstructive pulmonary disease (COPD). Tissue forming cells respond directly to allergens through activated immunoglobulins which then bind to their corresponding cell surface receptors. It was only recently reported that allergens and particles traffic through epithelial cells without modification and bind to the immunoglobulin receptors on the surface of sub-epithelial mesenchymal cells. In consequence, these cells secrete pro-inflammatory cytokines, thereby extending the local inflammation. Furthermore, activation of the immunoglobulin receptors can induce proliferation and tissue remodeling of the tissue forming cells. New studies using anti-IgE antibody therapy indicate that the inhibition of immunoglobulins reduces the response of tissue forming cells. The unmeasured questions are: (i) why do tissue forming cells express immunoglobulin receptors and (ii) do tissue forming cells process immunoglobulin receptor bound particles? The focus of this review is to provide an overview of the expression and function of various immunoglobulin receptors.
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Affiliation(s)
- Michael Roth
- Pulmonary Cell Research, Department of Research and Pneumology, University Hospital Basel, 4031 Basel, Switzerland
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