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Tian M, Huang W, Chen J, Liu X, Wang H, Pan X, Wang L, Li Q, Gao L, Ye Y. The extract from Quzhou Aurantii Fructus attenuates cough variant asthma through inhibiting the TRPV1/Ca 2+/NFAT/TSLP pathway and ferroptosis via TRPV1 mediation in ovalbumin-induced mice. JOURNAL OF ETHNOPHARMACOLOGY 2025; 338:119038. [PMID: 39510426 DOI: 10.1016/j.jep.2024.119038] [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: 09/06/2024] [Revised: 10/20/2024] [Accepted: 11/04/2024] [Indexed: 11/15/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cough variant asthma (CVA), a prevalent chronic inflammatory disease, is the most common cause of chronic cough. Over the years, the aqueous extract of Quzhou Aurantii Fructus (QAFA) has been widely used to treat respiratory diseases, particularly cough. AIM OF THE STUDY This study aimed to elucidate the therapeutic effect of QAFA on allergen-induced CVA, providing deep insights into the underlying mechanisms. MATERIALS AND METHODS Ultra-high performance liquid chromatography quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS) was employed to characterize the compositions, while UPLC was used to quantify the contents of its major components in QAFA. CVA model was established via sensitization and atomization with ovalbumin (OVA), and received 600 and 1200 mg/kg of QAFA via intragastric gavage. Cough response was assessed by stimulation with capsaicin (CAP). Then, airway hyperresponsiveness (AHR), ELISA, western blotting, RT-qPCR, and histological analyses, were applied to assess pulmonary function, pathological changes, and investigate mechanisms in CVA mice following QAFA treatment through the TRPV1/Ca2+-dependent NFAT-induced expression of TSLP and ferroptosis. Additionally, the effects and mechanisms of QAFA were validated using IL-4, CAP for stimulation, capsazepine (CPZ) for inhibition, and TRPV1 siRNA transfection in cells. RESULTS Chemical analysis revealed that QAFA primarily contained sixteen compounds, with four main components including narirutin, naringin, hesperidin, and neohesperidin. In vivo, QAFA treatment alleviated cough and AHR, while concurrently reducing airway inflammation and mucus secretion in CVA mice. These effects were achieved by suppressing the TRPV1/NFAT/TSLP pathway and modulating the expression of ferroptosis-related proteins. In vitro, siTRPV1-transfected BEAS-2B cells demonstrated the involvement of the TRPV1 channel in IL-4-mediated Ca2+ influxes, ferroptosis, and regulation of TSLP production. QAFA and CPZ suppressed IL-4-induced TSLP production via the TRPV1/NFAT pathway and regulated the levels of ferroptosis-related proteins, while CAP counteracted the effect of QAFA on TSLP production in BEAS-2B cells. Furthermore, QAFA reduced IL-4 or CAP induced Ca2+ influx and IL-4 induced ferroptosis through TRPV1 mediation. CONCLUSIONS This study demonstrated that QAFA improved pulmonary function and alleviated asthmatic inflammatory response in treating CVA probably through suppressing the TRPV1/Ca2+/NFAT/TSLP pathway and ferroptosis via TRPV1 mediation.
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Affiliation(s)
- Meizi Tian
- School of Pharmacy, Hangzhou Medical College, Hangzhou, Zhejiang, 310013, China; Key Laboratory of Neuropsychiatric Drug Research of Zhejiang Province, Hangzhou Medical College, Hangzhou, Zhejiang, 311300, China
| | - Wenkang Huang
- School of Pharmacy, Hangzhou Medical College, Hangzhou, Zhejiang, 310013, China; Key Laboratory of Neuropsychiatric Drug Research of Zhejiang Province, Hangzhou Medical College, Hangzhou, Zhejiang, 311300, China
| | - Jiahui Chen
- School of Pharmacy, Hangzhou Medical College, Hangzhou, Zhejiang, 310013, China; Key Laboratory of Neuropsychiatric Drug Research of Zhejiang Province, Hangzhou Medical College, Hangzhou, Zhejiang, 311300, China
| | - Xiaotong Liu
- School of Pharmacy, Hangzhou Medical College, Hangzhou, Zhejiang, 310013, China; Key Laboratory of Neuropsychiatric Drug Research of Zhejiang Province, Hangzhou Medical College, Hangzhou, Zhejiang, 311300, China
| | - Haiou Wang
- School of Pharmacy, Hangzhou Medical College, Hangzhou, Zhejiang, 310013, China; Key Laboratory of Neuropsychiatric Drug Research of Zhejiang Province, Hangzhou Medical College, Hangzhou, Zhejiang, 311300, China
| | - Xiaoya Pan
- School of Pharmacy, Hangzhou Medical College, Hangzhou, Zhejiang, 310013, China; Key Laboratory of Neuropsychiatric Drug Research of Zhejiang Province, Hangzhou Medical College, Hangzhou, Zhejiang, 311300, China
| | - Lixia Wang
- Changshan Characteristic Industry Development Center, Quzhou, Zhejiang, 324000, China
| | - Qin Li
- School of Pharmacy, Hangzhou Medical College, Hangzhou, Zhejiang, 310013, China; Key Laboratory of Neuropsychiatric Drug Research of Zhejiang Province, Hangzhou Medical College, Hangzhou, Zhejiang, 311300, China
| | - Lijuan Gao
- School of Pharmacy, Hangzhou Medical College, Hangzhou, Zhejiang, 310013, China; Key Laboratory of Neuropsychiatric Drug Research of Zhejiang Province, Hangzhou Medical College, Hangzhou, Zhejiang, 311300, China.
| | - Yiping Ye
- School of Pharmacy, Hangzhou Medical College, Hangzhou, Zhejiang, 310013, China; Key Laboratory of Neuropsychiatric Drug Research of Zhejiang Province, Hangzhou Medical College, Hangzhou, Zhejiang, 311300, China.
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Santos GX, dos Anjos-Garcia T, Vieira ACDJ, Galdino G. Spinal Involvement of TRPV1 and PI3K/AKT/mTOR Pathway During Chronic Postoperative Pain in Mice. Brain Sci 2025; 15:53. [PMID: 39851421 PMCID: PMC11763465 DOI: 10.3390/brainsci15010053] [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: 11/08/2024] [Revised: 01/03/2025] [Accepted: 01/04/2025] [Indexed: 01/26/2025] Open
Abstract
BACKGROUND Chronic postoperative pain (CPOP) is among the main consequences of surgical procedures, directly affecting the quality of life. Although many strategies have been used to treat this symptom, they are often ineffective. Thus, studies investigating CPOP-associated mechanisms may help to develop more effective treatment strategies. Therefore, the present study investigated the spinal participation of the transient potential receptor vanilloid type 1 (TRPV1) and PI3K/AKT/mTOR pathway activation during CPOP. METHODS In this study C57BL/6 male mice were used, and CPOP was induced by muscle retraction and incision. The nociceptive threshold was measured by the von Frey filament test. For pharmacological evaluation, TRPV1 and PI3K/AKT/mTOR inhibitors were administered intrathecally. TRPV1 and PI3K/AKT/mTOR protein levels were evaluated by Western blotting. RESULTS The results showed that CPOP increased TRPV1 and mTOR protein levels, and pretreatment with the specific inhibitors alleviated CPOP. In addition, pretreatment with the TRPV1 antagonist SB-366791 attenuated mTOR protein levels. CONCLUSIONS The results suggest that TRPV1 and the PI3K/AKT/mTOR pathway are involved in CPOP at the spinal level, and TRPV1 may activate mTOR during this process.
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Affiliation(s)
- Gabriela Xavier Santos
- Center for Experimental Biology, Laboratory of Neuroimmunobiology of Pain, Federal University of Alfenas, Alfenas 37133-840, MG, Brazil
- Inapós College, Padre Gervásio National Institute of Higher Education and Postgraduate Studies, Pouso Alegre 37550-121, MG, Brazil
| | - Tayllon dos Anjos-Garcia
- Center for Experimental Biology, Laboratory of Neuroimmunobiology of Pain, Federal University of Alfenas, Alfenas 37133-840, MG, Brazil
- Department of Animal Morphology and Physiology of the Faculty of Agricultural and Veterinary Sciences of São Paulo State University, Jaboticabal 14884-900, SP, Brazil
| | - Ana Carolina de Jesus Vieira
- Center for Experimental Biology, Laboratory of Neuroimmunobiology of Pain, Federal University of Alfenas, Alfenas 37133-840, MG, Brazil
| | - Giovane Galdino
- Center for Experimental Biology, Laboratory of Neuroimmunobiology of Pain, Federal University of Alfenas, Alfenas 37133-840, MG, Brazil
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Murakami D, Kono M, Sakatani H, Iyo T, Hijiya M, Shiga T, Kinoshita T, Sumioka T, Okada Y, Saika S, Koizumi Y, Hotomi M. Inhibition of transient receptor potential vanilloid 1 reduces shedding and transmission during Streptococcus pneumoniae co-infection with influenza. Infect Immun 2024; 92:e0014624. [PMID: 39109830 PMCID: PMC11475660 DOI: 10.1128/iai.00146-24] [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: 04/02/2024] [Accepted: 07/04/2024] [Indexed: 10/16/2024] Open
Abstract
Transmission is the first step for a microorganism to establish colonization in the respiratory tract and subsequent development of infectious disease. Streptococcus pneumoniae is a leading pathogen that colonizes the mucosal surfaces of the human upper respiratory tract and causes subsequent transmission and invasive infections especially in co-infection with influenza A virus. Host factors contributing to respiratory contagion are poorly understood. Transient receptor potential vanilloid (TRPV) channels have various roles in response to microoorganism. Inhibition of TRPV exacerbates invasive infection by Streptococcus pneumoniae, but it is unclear how TRPV channels influence pneumococcal transmission. Here, we describe the effect of inhibition of TRPV1 on pneumococcal transmission. We adopted a TRPV1-deficient infant mouse model of pneumococcal transmission during co-infection with influenza A virus. We also analyzed the expression of nasal mucin or pro-inflammatory cytokines. TRPV1 deficiency attenuated pneumococcal transmission and shedding during co-infection with influenza A virus. TRPV1 deficiency suppressed the expression of nasal mucin. In addition, there were increases in the expression of tumor necrosis factor-α and type I interferon, followed by the suppressed replication of influenza A virus in TRPV1-deficient mice. Inhibition of TRPV1 was shown to attenuate pneumococcal transmission by reducing shedding through the suppression of nasal mucin during co-infection with influenza A virus. Inhibition of TRPV1 suppressed nasal mucin by modulation of pro-inflammatory responses and regulation of replication of influenza A virus. TRPV1 could be a new target in preventive strategy against pneumococcal transmission.
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Affiliation(s)
- Daichi Murakami
- Department of Otorhinolaryngology-Head and Neck Surgery, Wakayama Medical University, Wakayama, Japan
| | - Masamitsu Kono
- Department of Otorhinolaryngology-Head and Neck Surgery, Wakayama Medical University, Wakayama, Japan
| | - Hideki Sakatani
- Department of Otorhinolaryngology-Head and Neck Surgery, Wakayama Medical University, Wakayama, Japan
| | - Takuro Iyo
- Department of Otorhinolaryngology-Head and Neck Surgery, Wakayama Medical University, Wakayama, Japan
| | - Masayoshi Hijiya
- Department of Otorhinolaryngology-Head and Neck Surgery, Wakayama Medical University, Wakayama, Japan
| | - Tatsuya Shiga
- Department of Otorhinolaryngology-Head and Neck Surgery, Wakayama Medical University, Wakayama, Japan
| | - Tetsuya Kinoshita
- Department of Otorhinolaryngology-Head and Neck Surgery, Wakayama Medical University, Wakayama, Japan
| | - Takayoshi Sumioka
- Department of Ophthalmology, Wakayama Medical University, Wakayama, Japan
| | - Yuka Okada
- Department of Ophthalmology, Wakayama Medical University Kihoku Hospital, Wakayama, Japan
| | - Shizuya Saika
- Department of Ophthalmology, Wakayama Medical University, Wakayama, Japan
| | - Yusuke Koizumi
- Department of Clinical Infectious Diseases, Infection Control and Prevention, Wakayama Medical University, Wakayama, Japan
| | - Muneki Hotomi
- Department of Otorhinolaryngology-Head and Neck Surgery, Wakayama Medical University, Wakayama, Japan
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Xu T, Chen Y, Zhan W, Chung KF, Qiu Z, Huang K, Chen R, Xie J, Wang G, Zhang M, Wang X, Yao H, Liao X, Zhang Y, Zhang G, Zhang W, Sun D, Zhu J, Jiang S, Feng J, Zhao J, Sun G, Huang H, Zhang J, Wang L, Wu F, Li S, Xu P, Chi C, Chen P, Jiang M, He W, Huang L, Luo W, Li S, Zhong N, Lai K. Profiles of Cough and Associated Risk Factors in Nonhospitalized Individuals With SARS-CoV-2 Omicron Variant Infection: Cross-Sectional Online Survey in China. JMIR Public Health Surveill 2024; 10:e47453. [PMID: 38315527 PMCID: PMC10877488 DOI: 10.2196/47453] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 07/19/2023] [Accepted: 11/29/2023] [Indexed: 02/07/2024] Open
Abstract
BACKGROUND Cough is a common symptom during and after COVID-19 infection; however, few studies have described the cough profiles of COVID-19. OBJECTIVE The aim of this study was to investigate the prevalence, severity, and associated risk factors of severe and persistent cough in individuals with COVID-19 during the latest wave of the Omicron variant in China. METHODS In this nationwide cross-sectional study, we collected information of the characteristics of cough from individuals with infection of the SARS-CoV-2 Omicron variant using an online questionnaire sent between December 31, 2022, and January 11, 2023. RESULTS There were 11,718 (n=7978, 68.1% female) nonhospitalized responders, with a median age of 37 (IQR 30-47) years who responded at a median of 16 (IQR 12-20) days from infection onset to the time of the survey. Cough was the most common symptom, occurring in 91.7% of participants, followed by fever, fatigue, and nasal congestion (68.8%-87.4%). The median cough visual analog scale (VAS) score was 70 (IQR 50-80) mm. Being female (odds ratio [OR] 1.31, 95% CI 1.20-1.43), having a COVID-19 vaccination history (OR 1.71, 95% CI 1.37-2.12), current smoking (OR 0.48, 95% CI 0.41-0.58), chronic cough (OR 2.04, 95% CI 1.69-2.45), coronary heart disease (OR 1.71, 95% CI 1.17-2.52), asthma (OR 1.22, 95% CI 1.02-1.46), and gastroesophageal reflux disease (GERD) (OR 1.21, 95% CI 1.01-1.45) were independent factors for severe cough (VAS>70, 37.4%). Among all respondents, 35.0% indicated having a productive cough, which was associated with risk factors of being female (OR 1.44, 95% CI 1.31-1.57), having asthma (OR 1.84, 95% CI 1.52-2.22), chronic cough (OR 1.44, 95% CI 1.19-1.74), and GERD (OR 1.22, 95% CI 1.01-1.47). Persistent cough (>3 weeks) occurred in 13.0% of individuals, which was associated with the risk factors of having diabetes (OR 2.24, 95% CI 1.30-3.85), asthma (OR 1.70, 95% CI 1.11-2.62), and chronic cough (OR 1.97, 95% CI 1.32-2.94). CONCLUSIONS Cough is the most common symptom in nonhospitalized individuals with Omicron SARS-CoV-2 variant infection. Being female, having asthma, chronic cough, GERD, coronary heart disease, diabetes, and a COVID-19 vaccination history emerged as independent factors associated with severe cough, productive cough, and persistent cough.
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Affiliation(s)
- Tingting Xu
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yuehan Chen
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Wenzhi Zhan
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Kian Fan Chung
- Department of Respiratory Medicine, Royal Brompton and Harefield Hospital, London, United Kingdom
- Experimental Studies Unit, National Heart & Lung Institute, Imperial College London, London, United Kingdom
| | - Zhongmin Qiu
- Department of Pulmonary and Critical Care Medicine, School of Medicine, Tongji Hospital, Tongji University, Shanghai, China
| | - Kewu Huang
- Department of Pulmonary and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Ruchong Chen
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jiaxing Xie
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Gang Wang
- West China School of Medicine, West China Hospital of Sichuan University, Chengdu, China
| | - Min Zhang
- Department of Respiratory and Critical Care Medicine, Shanghai General Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Xuefen Wang
- Department of Respiratory Medicine, The First Affliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Hongmei Yao
- Department of Respiratory Medicine, Guizhou Provincial People's Hospital, Guiyang, Guizhou, China
| | - Xiuqing Liao
- Department of Respiratory Medicine, Fuling Center Hospital of Chongqing, Chongqing, China
| | - Yunhui Zhang
- The First People's Hospital of Yunnan Province, Kunming, China
| | - Guojun Zhang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wei Zhang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Dejun Sun
- Department of Pulmonary and Critical Care Medicine, the Inner Mongolia Autonomous Region People's Hospital, Hohhot, China
| | - Jia Zhu
- Department of Respiratory Medicine, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Shujuan Jiang
- Department of Pulmonary Medicine, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Juntao Feng
- Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Jianping Zhao
- Department of Respiratory Medicine, Tongji Hospital, Tongji Medical College of Hua Zhong University of Science and Technology, Wuhan, China
| | - Gengyun Sun
- Department of Respiratory Medicine, The First Affiliated Hospital of Medical University of Anhui, Hefei, China
| | - Huaqiong Huang
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Jianyong Zhang
- The Second Department of Pulmonary and Critical Care Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Lingwei Wang
- Shenzhen People's Hospital, Shenzhen Institute of Respiratory Diseases, Shenzhen, China
| | - Feng Wu
- Department of Pulmonary and Critical Care Medicine, Huizhou Third People's Hospital, Guangzhou Medical University, Huizhou, China
| | - Suyun Li
- The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
| | - Pusheng Xu
- The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Chunhua Chi
- Department of Respiratory and Critical Care Medicine, Peking University First Hospital, Beijing, China
| | - Ping Chen
- General Hospital of Northern Theater Command, Shenyang, China
| | - Mei Jiang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Wen He
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Lianrong Huang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Wei Luo
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Shiyue Li
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Nanshan Zhong
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Kefang Lai
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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Jiang M, Yan L, Li M, Ye F, Shang E, Sun S, Fan X. Computer-aided investigation of Traditional Chinese Medicine mechanisms: A case study of San-Ao decoction in asthma treatment. Comput Biol Med 2024; 169:107868. [PMID: 38211384 DOI: 10.1016/j.compbiomed.2023.107868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 11/18/2023] [Accepted: 12/17/2023] [Indexed: 01/13/2024]
Abstract
The San-Ao Decoction (SAD) is a well-known Traditional Chinese Medicine (TCM) formula used to alleviate respiratory symptoms, including asthma. However, its precise mechanisms of action have remained largely unknown. In this study, we utilized computer-aided approaches to explore these mechanisms. Firstly, we conducted a comprehensive analysis of the chemical composition of SAD, which allowed us to identify the 28 main ingredients. Then, we employed computer simulations to investigate the potential active ingredients of SAD and the corresponding binding sites of transient receptor potential vanilloid 1 (TRPV1). The simulations revealed that D509 and D647 were the potential binding sites for TRPV1. Notably, molecular dynamics (MD) studies indicated that site D509 may function as an allosteric site of TRPV1. Furthermore, to validate the computer-aided predictions, we performed experimental studies, including in vitro and in vivo assays. The results of these experiments confirmed the predictions made by our computational models, providing further evidence for the mechanisms of action of San-Ao Decoction in asthma treatment. Our findings demonstrated that: i) D509 and D647 of TRPV1 are the key binding sites for the main ingredients of SAD; ii) SAD or its main ingredients significantly reduce the influx of Ca2+ through TRPV1, following the TCM principle of "Jun, Chen, Zuo, Shi"; iii) SAD shows efficiency in comprehensive in vivo validation. In conclusion, our computer-aided investigation of San-Ao Decoction in asthma treatment has provided valuable insights into the therapeutic mechanisms of this TCM formula. The combination of computational analysis and experimental validation has proven effective in enhancing our understanding of TCM and may pave the way for future discoveries in the field.
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Affiliation(s)
- Minyue Jiang
- School of Traditional Chinese Medicine & Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Lu Yan
- School of Traditional Chinese Medicine & Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Mengwen Li
- School of Traditional Chinese Medicine & Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Fan Ye
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Erxin Shang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Shanliang Sun
- National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China; State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198, China.
| | - Xinsheng Fan
- School of Traditional Chinese Medicine & Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China.
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Yao Y, Borkar NA, Zheng M, Wang S, Pabelick CM, Vogel ER, Prakash YS. Interactions between calcium regulatory pathways and mechanosensitive channels in airways. Expert Rev Respir Med 2023; 17:903-917. [PMID: 37905552 PMCID: PMC10872943 DOI: 10.1080/17476348.2023.2276732] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 10/25/2023] [Indexed: 11/02/2023]
Abstract
INTRODUCTION Asthma is a chronic lung disease influenced by environmental and inflammatory triggers and involving complex signaling pathways across resident airway cells such as epithelium, airway smooth muscle, fibroblasts, and immune cells. While our understanding of asthma pathophysiology is continually progressing, there is a growing realization that cellular microdomains play critical roles in mediating signaling relevant to asthma in the context of contractility and remodeling. Mechanosensitive pathways are increasingly recognized as important to microdomain signaling, with Piezo and transient receptor protein (TRP) channels at the plasma membrane considered important for converting mechanical stimuli into cellular behavior. Given their ion channel properties, particularly Ca2+ conduction, a question becomes whether and how mechanosensitive channels contribute to Ca2+ microdomains in airway cells relevant to asthma. AREAS COVERED Mechanosensitive TRP and Piezo channels regulate key Ca2+ regulatory proteins such as store operated calcium entry (SOCE) involving STIM and Orai channels, and sarcoendoplasmic (SR) mechanisms such as IP3 receptor channels (IP3Rs), and SR Ca2+ ATPase (SERCA) that are important in asthma pathophysiology including airway hyperreactivity and remodeling. EXPERT OPINION Physical and/or functional interactions between Ca2+ regulatory proteins and mechanosensitive channels such as TRP and Piezo can toward understanding asthma pathophysiology and identifying novel therapeutic approaches.
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Affiliation(s)
- Yang Yao
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi’an Medical University, Xi’an, Shaanxi, China
- Department of Anesthesiology, Mayo Clinic, Rochester, MN, USA
| | - Niyati A Borkar
- Department of Anesthesiology, Mayo Clinic, Rochester, MN, USA
| | - Mengning Zheng
- Department of Anesthesiology, Mayo Clinic, Rochester, MN, USA
- Department of Respiratory and Critical Care Medicine, Guizhou Province People’s Hospital, Guiyang, Guizhou, China
| | - Shengyu Wang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi’an Medical University, Xi’an, Shaanxi, China
| | - Christina M Pabelick
- Department of Anesthesiology, Mayo Clinic, Rochester, MN, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - Elizabeth R Vogel
- Department of Anesthesiology, Mayo Clinic, Rochester, MN, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - YS Prakash
- Department of Anesthesiology, Mayo Clinic, Rochester, MN, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
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Czigle S, Bittner Fialová S, Tóth J, Mučaji P, Nagy M, on behalf of the OEMONOM. Treatment of Gastrointestinal Disorders-Plants and Potential Mechanisms of Action of Their Constituents. Molecules 2022; 27:2881. [PMID: 35566230 PMCID: PMC9105531 DOI: 10.3390/molecules27092881] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 04/19/2022] [Accepted: 04/26/2022] [Indexed: 11/16/2022] Open
Abstract
The worldwide prevalence of gastrointestinal diseases is about 40%, with standard pharmacotherapy being long-lasting and economically challenging. Of the dozens of diseases listed by the Rome IV Foundation criteria, for five of them (heartburn, dyspepsia, nausea and vomiting disorder, constipation, and diarrhoea), treatment with herbals is an official alternative, legislatively supported by the European Medicines Agency (EMA). However, for most plants, the Directive does not require a description of the mechanisms of action, which should be related to the therapeutic effect of the European plant in question. This review article, therefore, summarizes the basic pharmacological knowledge of synthetic drugs used in selected functional gastrointestinal disorders (FGIDs) and correlates them with the constituents of medicinal plants. Therefore, the information presented here is intended as a starting point to support the claim that both empirical folk medicine and current and decades-old treatments with official herbal remedies have a rational basis in modern pharmacology.
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Affiliation(s)
- Szilvia Czigle
- Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University Bratislava, Odbojárov 10, SK-832 32 Bratislava, Slovakia; (S.B.F.); (J.T.); (P.M.); (M.N.)
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Xu J, Ghadiri M, Svolos M, McParland B, Traini D, Ong HX, Young PM. Investigating Potential TRPV1 Positive Feedback to Explain TRPV1 Upregulation in Airway Disease States. Drug Dev Ind Pharm 2022; 47:1924-1934. [PMID: 35473456 DOI: 10.1080/03639045.2022.2070759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVE The airway epithelium is a potential source of pathophysiology through activation of transient potential receptor vallinoid type 1 (TRPV1) channel. A positive feedback cycle caused by TRPV1 activity is hypothesised to induce upregulation and production of inflammatory cytokines, leading to exacerbations of chronic airway diseases. These cytokine and protein regulation effects were investigated in this study. METHODS Healthy (BEAS-2B) and cancer-derived (Calu-3) airway epithelial cell lines were assessed for changes to TRPV1 protein expression and mRNA expression following exposure to capsaicin (5 µM to 50 µM), and TRPV1 modulators including heat (43 °C), and hydrochloric acid (pH 3.4 to pH 6.4). Cytotoxicity was measured to determine the working concentration ranges of treatment. Subsequent bronchoconstriction by TRPV1 activation with capsaicin was measured on guinea pig airway tissue to confirm locally mediated activity without the action of known neuronal inputs. RESULTS TRPV1 protein expression was not different for all capsaicin, acidity, and heat exposures (P > 0.05), and was replicated in mRNA protein expression (P > 0.05). IL-6 and IL-8 expression were lower in BEAS-2B and Calu-3 cell lines exposed with acidity and heat (P < 0.05), but not consistently with capsaicin exposure, with potential cytotoxic effects possible. CONCLUSIONS TRPV1 expression was present in airway epithelial cells but its expression was not changed after activation by TRPV1 activators. Thus, it was not apparent the reason for reported TRPV1 upregulation in patients with airway disease states. More complex mechanisms are likely involved and will require further investigation.
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Affiliation(s)
- Jesse Xu
- Respiratory Technology Group, Woolcock Institute of Medical Research, 431 Glebe Point Road, Glebe NSW 2037, Australia.,School of Pharmacy, Faculty of Medicine and Health, The University of Sydney, Camperdown NSW 2006, Australia
| | - Maliheh Ghadiri
- Respiratory Technology Group, Woolcock Institute of Medical Research, 431 Glebe Point Road, Glebe NSW 2037, Australia
| | - Maree Svolos
- Respiratory Technology Group, Woolcock Institute of Medical Research, 431 Glebe Point Road, Glebe NSW 2037, Australia
| | - Brent McParland
- School of Pharmacy, Faculty of Medicine and Health, The University of Sydney, Camperdown NSW 2006, Australia
| | - Daniela Traini
- Respiratory Technology Group, Woolcock Institute of Medical Research, 431 Glebe Point Road, Glebe NSW 2037, Australia.,Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Australia
| | - Hui Xin Ong
- Respiratory Technology Group, Woolcock Institute of Medical Research, 431 Glebe Point Road, Glebe NSW 2037, Australia.,Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Australia
| | - Paul M Young
- Respiratory Technology Group, Woolcock Institute of Medical Research, 431 Glebe Point Road, Glebe NSW 2037, Australia.,Department of Marketing, Macquarie Business School, Macquarie University, NSW 2109, Australia
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9
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Kumar V, Kumar V, Mahajan N, Kaur J, Devi K, Dharavath RN, Singh RP, Kondepudi KK, Bishnoi M. Mucin secretory action of capsaicin prevents high fat diet-induced gut barrier dysfunction in C57BL/6 mice colon. Biomed Pharmacother 2021; 145:112452. [PMID: 34808551 DOI: 10.1016/j.biopha.2021.112452] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 11/15/2021] [Accepted: 11/16/2021] [Indexed: 01/10/2023] Open
Abstract
The gut barrier - including tight junction proteins (TJPs) and mucus layers, is the first line of defense against physical, chemical or pathogenic incursions. This barrier is compromised in various health disorders. Capsaicin, a dietary agonist of Transient receptor potential vanilloid 1 (TRPV1) channel, is reported to alleviate the complications of obesity. While it is well known to improve energy expenditure and metabolism, and prevent dysbiosis, the more local effects on the host gut - particularly the gut barrier and mucus system remain elusive. To investigate the effect of capsaicin on the gut barrier and mucus production and to understand the involvement of mucus, bacteria, and TRPV1 in these phenomena, we employed a diet-induced obesity model in C57BL/6 mice, and capsaicin (2 mg/kg/day p.o.) or mucin (1 g/kg/day p.o.) as interventions, for 12 weeks. Parameters like weight gain, glucose homeostasis, TJPs expression, mucus staining, intestinal permeability etc were studied. 16 S rDNA sequencing and in vitro Ca2+ measurement experiments were performed to explore the role of microbiota in the beneficial effects. Mucin feeding reflected several anti-obesity effects produced by capsaicin, suggesting that mucus modulation might play a crucial role in capsaicin-induced anti-obesity effects. 16 S rDNA sequencing and in vitro Ca2+ measurement experiments pointed to TRPV1 modulation by bacteria besides capsaicin. Capsaicin, bacteria and the host mucus system seem to act in a cyclic cascade involving TRPV1, which can be activated by capsaicin and various bacteria. These findings provide new insight into the role of TRPV1 in maintaining a healthy gut environment.
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Affiliation(s)
- Vijay Kumar
- Centre for Excellence in Functional Foods, Division of Food and Nutritional Biotechnology, National Agri-Food Biotechnology Institute (NABI), Knowledge City-Sector 81, SAS Nagar, Punjab 140306, India; Department of Biotechnology, Panjab University, Sector-25, Chandigarh 160014, India
| | - Vibhu Kumar
- Centre for Excellence in Functional Foods, Division of Food and Nutritional Biotechnology, National Agri-Food Biotechnology Institute (NABI), Knowledge City-Sector 81, SAS Nagar, Punjab 140306, India; University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh 160014, India
| | - Neha Mahajan
- Centre for Excellence in Functional Foods, Division of Food and Nutritional Biotechnology, National Agri-Food Biotechnology Institute (NABI), Knowledge City-Sector 81, SAS Nagar, Punjab 140306, India; Regional Centre for Biotechnology, Faridabad-Gurgaon Expressway, Faridabad, Haryana 121001, India
| | - Jasleen Kaur
- Centre for Excellence in Functional Foods, Division of Food and Nutritional Biotechnology, National Agri-Food Biotechnology Institute (NABI), Knowledge City-Sector 81, SAS Nagar, Punjab 140306, India; University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh 160014, India
| | - Kirti Devi
- Centre for Excellence in Functional Foods, Division of Food and Nutritional Biotechnology, National Agri-Food Biotechnology Institute (NABI), Knowledge City-Sector 81, SAS Nagar, Punjab 140306, India; Department of Biotechnology, Panjab University, Sector-25, Chandigarh 160014, India
| | - Ravinder Naik Dharavath
- Centre for Excellence in Functional Foods, Division of Food and Nutritional Biotechnology, National Agri-Food Biotechnology Institute (NABI), Knowledge City-Sector 81, SAS Nagar, Punjab 140306, India
| | - Ravindra Pal Singh
- Centre for Excellence in Functional Foods, Division of Food and Nutritional Biotechnology, National Agri-Food Biotechnology Institute (NABI), Knowledge City-Sector 81, SAS Nagar, Punjab 140306, India
| | - Kanthi Kiran Kondepudi
- Centre for Excellence in Functional Foods, Division of Food and Nutritional Biotechnology, National Agri-Food Biotechnology Institute (NABI), Knowledge City-Sector 81, SAS Nagar, Punjab 140306, India.
| | - Mahendra Bishnoi
- Centre for Excellence in Functional Foods, Division of Food and Nutritional Biotechnology, National Agri-Food Biotechnology Institute (NABI), Knowledge City-Sector 81, SAS Nagar, Punjab 140306, India; Humboldt Fellow (Experienced Researcher), Klinik für Anästhesiologie, Friedrich-Alexander Universität Erlangen-Nürnberg, Krankanstrasse, 91054 Erlangen, Germany.
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10
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Dumitrache MD, Jieanu AS, Scheau C, Badarau IA, Popescu GDA, Caruntu A, Costache DO, Costache RS, Constantin C, Neagu M, Caruntu C. Comparative effects of capsaicin in chronic obstructive pulmonary disease and asthma (Review). Exp Ther Med 2021; 22:917. [PMID: 34306191 PMCID: PMC8280727 DOI: 10.3892/etm.2021.10349] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 05/14/2021] [Indexed: 12/25/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) and asthma are chronic respiratory diseases with high prevalence and mortality that significantly alter the quality of life in affected patients. While the cellular and molecular mechanisms engaged in the development and evolution of these two conditions are different, COPD and asthma share a wide array of symptoms and clinical signs that may impede differential diagnosis. However, the distinct signaling pathways regulating cough and airway hyperresponsiveness employ the interaction of different cells, molecules, and receptors. Transient receptor potential cation channel subfamily V member 1 (TRPV1) plays a major role in cough and airway inflammation. Consequently, its agonist, capsaicin, is of substantial interest in exploring the cellular effects and regulatory pathways that mediate these respiratory conditions. Increasingly more studies emphasize the use of capsaicin for the inhalation cough challenge, yet the involvement of TRPV1 in cough, bronchoconstriction, and the initiation of inflammation has not been entirely revealed. This review outlines a comparative perspective on the effects of capsaicin and its receptor in the pathophysiology of COPD and asthma, underlying the complex entanglement of molecular signals that bridge the alteration of cellular function with the multitude of clinical effects.
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Affiliation(s)
- Mihai-Daniel Dumitrache
- Department of Pneumology IV, 'Marius Nasta' Institute of Pneumophtysiology, 050159 Bucharest, Romania
| | - Ana Stefania Jieanu
- Department of Physiology, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Cristian Scheau
- Department of Physiology, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Ioana Anca Badarau
- Department of Physiology, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | | | - Ana Caruntu
- Department of Oral and Maxillofacial Surgery, 'Dr. Carol Davila' Central Military Emergency Hospital, 010825 Bucharest, Romania.,Department of Oral and Maxillofacial Surgery, Faculty of Dental Medicine, 'Titu Maiorescu' University, 031593 Bucharest, Romania
| | - Daniel Octavian Costache
- Department of Dermatology, 'Dr. Carol Davila' Central Military Emergency Hospital, 010825 Bucharest, Romania
| | - Raluca Simona Costache
- Department of Gastroenterology, Gastroenterology and Internal Medicine Clinic, 'Dr. Carol Davila' Central Military Emergency Hospital, 010825 Bucharest, Romania.,Department of Internal Medicine and Gastroenterology, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Carolina Constantin
- Department of Immunology, 'Victor Babes' National Institute of Pathology, 050096 Bucharest, Romania.,Department of Pathology, 'Colentina' University Hospital, 020125 Bucharest, Romania
| | - Monica Neagu
- Department of Immunology, 'Victor Babes' National Institute of Pathology, 050096 Bucharest, Romania.,Department of Pathology, 'Colentina' University Hospital, 020125 Bucharest, Romania.,Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 76201 Bucharest, Romania
| | - Constantin Caruntu
- Department of Physiology, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania.,Department of Dermatology, 'Prof. N.C. Paulescu' National Institute of Diabetes, Nutrition and Metabolic Diseases, 011233 Bucharest, Romania
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11
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Kumar V, Mahajan N, Khare P, Kondepudi KK, Bishnoi M. Role of TRPV1 in colonic mucin production and gut microbiota profile. Eur J Pharmacol 2020; 888:173567. [PMID: 32946867 DOI: 10.1016/j.ejphar.2020.173567] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 09/12/2020] [Accepted: 09/14/2020] [Indexed: 12/16/2022]
Abstract
This study focuses on exploring the role of sensory cation channel Transient Receptor Potential channel subfamily Vanilloid 1 (TRPV1) in gut health, specifically mucus production and microflora profile in gut. We employed resiniferatoxin (ultrapotent TRPV1 agonist) induced chemo-denervation model in rats and studied the effects of TRPV1 ablation on colonic mucus secretion patterns. Histological and transcriptional analysis showed substantial decrease in mucus production as well as in expression of genes involved in goblet cell differentiation, mucin production and glycosylation. 16S metagenome analysis revealed changes in abundance of various gut bacteria, including decrease in beneficial bacteria like Lactobacillus spp and Clostridia spp. Also, TRPV1 ablation significantly decreased the levels of short chain fatty acids, i.e. acetate and butyrate. The present study provides first evidence that systemic TRPV1 ablation leads to impairment in mucus production and causes dysbiosis in gut. Further, it suggests to address mucin production and gut microbiota related adverse effects during the development of TRPV1 antagonism/ablation-based therapeutic and preventive strategies.
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Affiliation(s)
- Vijay Kumar
- National Agri-Food Biotechnology Institute (NABI), Knowledge City-Sector 81, SAS Nagar, Punjab, 140306, India; Department of Biotechnology, Panjab University, Sector-25, Chandigarh, 160014, India
| | - Neha Mahajan
- National Agri-Food Biotechnology Institute (NABI), Knowledge City-Sector 81, SAS Nagar, Punjab, 140306, India; Regional Centre for Biotechnology, Faridabad-Gurgaon expressway, Faridabad, Haryana, 121001, India
| | - Pragyanshu Khare
- National Agri-Food Biotechnology Institute (NABI), Knowledge City-Sector 81, SAS Nagar, Punjab, 140306, India
| | - Kanthi Kiran Kondepudi
- National Agri-Food Biotechnology Institute (NABI), Knowledge City-Sector 81, SAS Nagar, Punjab, 140306, India
| | - Mahendra Bishnoi
- National Agri-Food Biotechnology Institute (NABI), Knowledge City-Sector 81, SAS Nagar, Punjab, 140306, India.
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12
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Takahashi N, Tsuzuno T, Mineo S, Yamada-Hara M, Aoki-Nonaka Y, Tabeta K. Epithelial TRPV1 channels: Expression, function, and pathogenicity in the oral cavity. J Oral Biosci 2020; 62:235-241. [DOI: 10.1016/j.job.2020.05.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/21/2020] [Accepted: 05/26/2020] [Indexed: 12/17/2022]
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13
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Standardized Extract of Atractylodis Rhizoma Alba and Fructus Schisandrae Ameliorates Coughing and Increases Expectoration of Phlegm. Molecules 2020; 25:molecules25133064. [PMID: 32635583 PMCID: PMC7411911 DOI: 10.3390/molecules25133064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 06/25/2020] [Accepted: 07/02/2020] [Indexed: 01/17/2023] Open
Abstract
Cough and phlegm frequently occur in respiratory diseases like upper respiratory tract infections, acute bronchitis, and chronic obstructive pulmonary diseases. To relieve these symptoms and diseases, various ingredients are being used despite the debates on their clinical efficacy. We aimed to investigate the effects of the extract CKD-497, composed of Atractylodis Rhizoma Alba and Fructus Schisandrae, in relieving cough and facilitating expectoration of phlegm. CKD-497 was found to inhibit inflammatory mediators such as interleukin-8 (IL-8) and tumor necrosis factor α (TNF-α) in lipopolysaccharide (LPS)-treated mouse macrophages and transient receptor potential cation channel 1 (TRPV-1)-overexpressed human bronchial epithelial cells stimulated by capsaicin. CKD-497 decreased the viscosity of the mucin solution. During in vivo experiments, CKD-497 reduced coughing numbers and increased expectoration of phlegm via mucociliary clearance enhancement. Collectively, these data suggest that CKD-497 possesses potential for cough and phlegm expectoration treatment.
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14
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Jing X, Yan W, Zeng H, Cheng W. Qingfei oral liquid alleviates airway hyperresponsiveness and mucus hypersecretion via TRPV1 signaling in RSV-infected asthmatic mice. Biomed Pharmacother 2020; 128:110340. [PMID: 32521453 DOI: 10.1016/j.biopha.2020.110340] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/24/2020] [Accepted: 05/30/2020] [Indexed: 12/14/2022] Open
Abstract
Pediatric asthma is exacerbated by Respiratory Syncytial Virus (RSV) infection, and Transient Receptor Potential Vanilloid 1 (TRPV1) promotes production of inflammatory cytokines and mucus hypersecretion in the pathology of this disease. Our previous research revealed that Qingfei oral liquid (QF) inhibited airway inflammation and mucus hypersecretion in RSV-infected asthmatic mice models and that this may be associated with the TRPV1-regulation of NF-κB and Mucin 5AC (MUC5AC) expression, but the exact mechanism is unknown. In the present study, LC-MS was used for analyzing the chemicals in QF, ovalbumin (OVA)-induced asthmatic mice inhaled RSV three consecutive times to create an RSV-infected asthmatic model. We found treatment from QF alleviated airway hyperresponsiveness (AHR) and reduced congestion, edema, and infiltration of inflammatory cells into pulmonary tissues. Additionally, QF was found to decrease expression of NF-κB and its downstream inflammatory cytokines IL-1β, IL-4, IL-5, and IL-13, as well as a decrease in MUC5AC and pro-inflammatory cytokines in PKC via a reduction in Protein Kinase C-dependent signaling. These findings suggest that QF can alleviate AHR and mucus hypersecretion caused by RSV infection in asthmatic mice, and its mechanism may be associated with the regulation of the TRPV1 signaling pathway.
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Affiliation(s)
- Xiaoping Jing
- Department of Traditional Chinese Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai 200040, China.
| | - Wuning Yan
- Department of Traditional Chinese Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai 200040, China
| | - Hairong Zeng
- Department of Traditional Chinese Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai 200040, China
| | - Weiwei Cheng
- Department of Traditional Chinese Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai 200040, China
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15
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Kytikova OY, Novgorodtseva TP, Denisenko YK, Antonyuk MV, Gvozdenko TA. Dysfunction of transient receptor potential ion channels as an important pathophysiological mechanism in asthma. RUSSIAN OPEN MEDICAL JOURNAL 2020. [DOI: 10.15275/rusomj.2020.0102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Asthma is a chronic heterogeneous disease characterized by chronic inflammation and bronchial hyperreactivity. Neurogenic inflammation is one of the important causes of hyperreactivity. Dysfunction of transient receptor potential (TRP) ion channels underlies the development of neurogenic inflammation, bronchial hyperreactivity and respiratory symptoms of asthma such as bronchospasm and cough. TRP channels are expressed in the respiratory tract. Their activation is mediated by endogenous and exogenous factors involved in the pathogenesis of asthma. The study of functioning and regulation of TRP channels is relevant, as they could be important therapeutic targets for asthma. The aim of the review is to summarize modern ideas about the mechanisms of functioning and regulation of members of the TRP channel superfamily, the role of which in lung pathology and physiology are the best studied.
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Affiliation(s)
- Oxana Yu. Kytikova
- Vladivostok Branch of Far Eastern Scientific Center of Physiology and Pathology of Respiration – Institute of Medical Climatology and Rehabilitative Treatment
| | - Tatyana P. Novgorodtseva
- Vladivostok Branch of Far Eastern Scientific Center of Physiology and Pathology of Respiration – Institute of Medical Climatology and Rehabilitative Treatment
| | - Yulia K. Denisenko
- Vladivostok Branch of Far Eastern Scientific Center of Physiology and Pathology of Respiration – Institute of Medical Climatology and Rehabilitative Treatment
| | - Marina V. Antonyuk
- Vladivostok Branch of Far Eastern Scientific Center of Physiology and Pathology of Respiration – Institute of Medical Climatology and Rehabilitative Treatment
| | - Tatyana A. Gvozdenko
- Vladivostok Branch of Far Eastern Scientific Center of Physiology and Pathology of Respiration – Institute of Medical Climatology and Rehabilitative Treatment
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16
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Kytikova OY, Novgorodtseva TP, Antonyuk MV, Gvozdenko TA. The role of regulatory neuropeptides and neurotrophic factors in asthma pathophysiology. RUSSIAN OPEN MEDICAL JOURNAL 2019. [DOI: 10.15275/rusomj.2019.0402] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
In the last decade, the attention of scientists in the field of biomedicine is focused on studying the relationship between the immunological and neurogenic components of the inflammatory response and their contribution to the pathophysiology of allergic inflammation in asthma. The review is devoted to detailing the mechanism of neurogenic inflammation involving regulatory neuropeptides (substance P, vasoactive intestinal peptide, calcitonin gene-related peptide) in the pathogenesis of bronchial hyperreactivity in asthma. The role of neurotrophic growth factors (nerve growth factor, brain-derived neurotrophic factor) in the regulation of remodeling of bronchi in asthma has been analyzed. The study of neuroimmune mechanisms in the pathophysiology of asthma will it possible to find new therapeutic targets in this research area.
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Affiliation(s)
- Oxana Yu. Kytikova
- Scientific Research Institute of Medical Climatology and Rehabilitation Treatment
| | | | - Marina V. Antonyuk
- Scientific Research Institute of Medical Climatology and Rehabilitation Treatment
| | - Tatyana A. Gvozdenko
- Scientific Research Institute of Medical Climatology and Rehabilitation Treatment
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17
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Krishn SR, Ganguly K, Kaur S, Batra SK. Ramifications of secreted mucin MUC5AC in malignant journey: a holistic view. Carcinogenesis 2019; 39:633-651. [PMID: 29415129 DOI: 10.1093/carcin/bgy019] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Accepted: 02/01/2018] [Indexed: 12/14/2022] Open
Abstract
Heavily glycosylated secreted mucin MUC5AC, by the virtue of its cysteine-rich repeats, can form inter- and intramolecular disulfide linkages resulting in complex polymers, which in turn craft the framework of the polymeric mucus gel on epithelial cell surfaces. MUC5AC is a molecule with versatile functional implications including barrier functions to epithelial cells, host-pathogen interaction, immune cell attraction to sites of premalignant or malignant lesions and tumor progression in a context-dependent manner. Differential expression, glycosylation and localization of MUC5AC have been associated with a plethora of benign and malignant pathologies. In this era of robust technologies, overexpression strategies and genetically engineered mouse models, MUC5AC is emerging as a potential diagnostic, prognostic and therapeutic target for various malignancies. Considering the clinical relevance of MUC5AC, this review holistically encompasses its genomic organization, domain structure, glycosylation patterns, regulation, functional and molecular connotation from benign to malignant pathologies. Furthermore, we have here explored the incipient and significant experimental tools that are being developed to study this structurally complex and evolutionary conserved gel-forming mucin.
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Affiliation(s)
- Shiv Ram Krishn
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Koelina Ganguly
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Sukhwinder Kaur
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA.,Fred and Pamela Buffett Cancer Center, Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, USA
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18
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Choi JY, Lee HY, Hur J, Kim KH, Kang JY, Rhee CK, Lee SY. TRPV1 Blocking Alleviates Airway Inflammation and Remodeling in a Chronic Asthma Murine Model. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2018; 10:216-224. [PMID: 29676068 PMCID: PMC5911440 DOI: 10.4168/aair.2018.10.3.216] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 01/17/2018] [Accepted: 01/29/2018] [Indexed: 12/22/2022]
Abstract
Purpose Asthma is a chronic inflammatory airway disease characterized by airway hyperresponsiveness (AHR), inflammation, and remodeling. There is emerging interest in the involvement of the transient receptor potential vanilloid 1 (TRPV1) channel in the pathophysiology of asthma. This study examined whether TRPV1 antagonism alleviates asthma features in a murine model of chronic asthma. Methods BALB/c mice were sensitized to and challenged by ovalbumin to develop chronic asthma. Capsazepine (TRPV1 antagonist) or TRPV1 small interfering RNA (siRNA) was administered in the treatment group to evaluate the effect of TPV1 antagonism on AHR, airway inflammation, and remodeling. Results The mice displayed increased AHR, airway inflammation, and remodeling. Treatment with capsazepine or TRPV1 siRNA reduced AHR to methacholine and airway inflammation. Type 2 T helper (Th2) cytokines (interleukin [IL]-4, IL-5, and IL-13) were reduced and epithelial cell-derived cytokines (thymic stromal lymphopoietin [TSLP], IL-33, and IL-25), which regulate Th2 cytokine-associated inflammation, were also reduced. Airway remodeling characterized by goblet cell hyperplasia, increased α-smooth muscle action, and collagen deposition was also alleviated by both treatments. Conclusions Treatment directed at TRPV1 significantly alleviated AHR, airway inflammation, and remodeling in a chronic asthma murine model. The TRPV1 receptor can be a potential drug target for chronic bronchial asthma.
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Affiliation(s)
- Joon Young Choi
- Division of Pulmonology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Hwa Young Lee
- Division of Pulmonology, Department of Internal Medicine, Uijeongbu St. Mary's Hospital, The Catholic University of Korea College of Medicine, Uijeongbu, Korea
| | - Jung Hur
- Division of Pulmonology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Kyung Hoon Kim
- Division of Pulmonology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Ji Young Kang
- Division of Pulmonology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Chin Kook Rhee
- Division of Pulmonology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Sook Young Lee
- Division of Pulmonology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea.
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19
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Cold stress-induced brain injury regulates TRPV1 channels and the PI3K/AKT signaling pathway. Brain Res 2017; 1670:201-207. [PMID: 28669718 DOI: 10.1016/j.brainres.2017.06.025] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 06/14/2017] [Accepted: 06/25/2017] [Indexed: 01/09/2023]
Abstract
Transient receptor potential vanilloid 1 (TRPV1) is a nonselective cation channel that interacts with several intracellular proteins in vivo, including calmodulin and Phosphatidylinositol-3-Kinase/Protein Kinase B (PI3K/Akt). TRPV1 activation has been reported to exert neuroprotective effects. The aim of this study was to examine the impact of cold stress on the mouse brain and the underlying mechanisms of TRPV1 involvement. Adult male C57BL/6 mice were subjected to cold stress (4°C for 8h per day for 2weeks). The behavioral deficits of the mice were then measured using the Morris water maze. Expression levels of brain injury-related proteins and mRNA were measured by western blot, immunofluorescence or RT-PCR analysis. The mice displayed behavioral deficits, inflammation and changes in brain injury markers following cold stress. As expected, upregulated TRPV1 expression levels and changes in PI3K/Akt expression were found. The TRPV1 inhibitor reduced the levels of brain injury-related proteins and inflammation. These data suggest that cold stress can induce brain injury, possibly through TRPV1 activation and the PI3K/Akt signaling pathway. Suppression of inflammation by inhibition of TRPV1 and the PI3K/Akt pathway may be helpful to prevent cold stress-induced brain injury.
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20
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Juan Y, Haiqiao W, Xie W, Huaping H, Zhong H, Xiangdong Z, Kolosov VP, Perelman JM. Cold-inducible RNA-binding protein mediates airway inflammation and mucus hypersecretion through a post-transcriptional regulatory mechanism under cold stress. Int J Biochem Cell Biol 2016; 78:335-348. [PMID: 27477308 DOI: 10.1016/j.biocel.2016.07.029] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 07/24/2016] [Accepted: 07/27/2016] [Indexed: 11/20/2022]
Abstract
Acute or chronic cold exposure exacerbates chronic inflammatory airway diseases, such as chronic obstructive pulmonary disease (COPD) and asthma. Cold-inducible RNA-binding protein (CIRP) is a cold-shock protein and is induced by various environmental stressors, such as hypothermia and hypoxia. In this study, we showed that CIRP gene and protein levels were significantly increased in patients with COPD and in rats with chronic airway inflammation compared with healthy subjects. Similarly, inflammatory cytokine production and MUC5AC secretion were up-regulated in rats following cigarette smoke inhalation. Cold temperature-induced CIRP overexpression and translocation were shown to be dependent on arginine methylation in vitro. CIRP overexpression promoted stress granule (SG) assembly. In the cytoplasm, the stability of pro-inflammatory cytokine mRNAs was increased through specific interactions between CIRP and mediator mRNA 3'-UTRs; these interactions increased the mRNA translation, resulting in MUC5AC overproduction in response to cold stress. Conversely, CIRP silencing and a methyltransferase inhibitor (adenosine dialdehyde) promoted cytokine mRNA degradation and inhibited the inflammatory response and mucus hypersecretion. These findings indicate that cold temperature can induce an airway inflammatory response and excess mucus production via a CIRP-mediated increase in mRNA stability and protein translation.
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Affiliation(s)
- Yang Juan
- Division of Respiratory Medicine, Chongqing Traditional Chinese Medicine Hospital, Chongqing Academy of Traditional Chinese Medicine, Chongqing, China.
| | - Wu Haiqiao
- Division of Respiratory Medicine, Chongqing Traditional Chinese Medicine Hospital, Chongqing Academy of Traditional Chinese Medicine, Chongqing, China
| | - Wenyao Xie
- Division of Respiratory Medicine, Chongqing Traditional Chinese Medicine Hospital, Chongqing Academy of Traditional Chinese Medicine, Chongqing, China
| | - Huang Huaping
- Division of Respiratory Medicine, Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Han Zhong
- Division of Respiratory Medicine, Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Zhou Xiangdong
- Division of Respiratory Medicine, Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Victor P Kolosov
- Far Eastern Scientific Center of Physiology and Pathology of Respiration, Siberian Branch, Russian Academy of Medical Sciences, Russian Federation
| | - Juliy M Perelman
- Far Eastern Scientific Center of Physiology and Pathology of Respiration, Siberian Branch, Russian Academy of Medical Sciences, Russian Federation
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21
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Capsaicin, Nociception and Pain. Molecules 2016; 21:molecules21060797. [PMID: 27322240 PMCID: PMC6273518 DOI: 10.3390/molecules21060797] [Citation(s) in RCA: 136] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 06/06/2016] [Accepted: 06/14/2016] [Indexed: 12/13/2022] Open
Abstract
Capsaicin, the pungent ingredient of the hot chili pepper, is known to act on the transient receptor potential cation channel vanilloid subfamily member 1 (TRPV1). TRPV1 is involved in somatic and visceral peripheral inflammation, in the modulation of nociceptive inputs to spinal cord and brain stem centers, as well as the integration of diverse painful stimuli. In this review, we first describe the chemical and pharmacological properties of capsaicin and its derivatives in relation to their analgesic properties. We then consider the biochemical and functional characteristics of TRPV1, focusing on its distribution and biological effects within the somatosensory and viscerosensory nociceptive systems. Finally, we discuss the use of capsaicin as an agonist of TRPV1 to model acute inflammation in slices and other ex vivo preparations.
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22
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Yu Q, Chen X, Fang X, Chen Q, Hu C. Caveolin-1 aggravates cigarette smoke extract-induced MUC5AC secretion in human airway epithelial cells. Int J Mol Med 2015; 35:1435-42. [PMID: 25776934 DOI: 10.3892/ijmm.2015.2133] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 03/04/2015] [Indexed: 11/06/2022] Open
Abstract
Airway mucus hypersecretion is a major pathological characteristic of chronic obstructive pulmonary disease (COPD), and cigarette smoke is highly implicated in mucus secretion and the development of COPD. Cigarette smoke reportedly induces mucin overproduction through the epidermal growth factor receptor (EGFR) in the airway epithelium; however, the underlying mechanisms responsible for the activation of EGFR remain unknown. Caveolin-1, a component protein in the cytomembrane, reportedly regulates airway inflammation and lung injury. In this study, we aimed to determine whether caveolin-1 modulates mucin hyperproduction induced by cigarette smoke. Our results revealed that cigarette smoke extract (CSE) significantly increased MUC5AC production, as well as the levels of phosphorylated EGFR (p-EGFR) and phosphorylated Akt (p-Akt) in human bronchial epithelial cells (16HBE cells), as shown by ELISA, RT-PCR and western blot analysis. These effects were prevented by treatment with EGFR inhibitor (AG1478) and phosphatidylinostol-3-kinase (PI3K) inhibitor (LY294002). We also found that the overexpression of caveolin-1 enhanced the expression of MUC5AC, p-EGFR and p-Akt induced by CSE. Conversely, the downregulation of caveolin-1 by siRNA against caveolin-1 inhibited the expression of MUC5AC, p-EGFR and p-Akt. Taken together, our data suggest that caveolin-1 enhances CSE-induced MUC5AC hypersecretion through the EGFR/PI3K/Akt signaling pathway.
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Affiliation(s)
- Qiao Yu
- Department of Gerontology and Respirology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Xi Chen
- Department of Gerontology and Respirology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Xia Fang
- Department of Gerontology and Respirology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Qiong Chen
- Department of Gerontology and Respirology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Chengping Hu
- Department of Gerontology and Respirology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
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23
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Zholos AV. TRP Channels in Respiratory Pathophysiology: the Role of Oxidative, Chemical Irritant and Temperature Stimuli. Curr Neuropharmacol 2015; 13:279-91. [PMID: 26411771 PMCID: PMC4598440 DOI: 10.2174/1570159x13666150331223118] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 03/09/2015] [Accepted: 03/09/2015] [Indexed: 12/13/2022] Open
Abstract
There is rapidly growing evidence indicating multiple and important roles of Ca(2+)- permeable cation TRP channels in the airways, both under normal and disease conditions. The aim of this review was to summarize the current knowledge of TRP channels in sensing oxidative, chemical irritant and temperature stimuli by discussing expression and function of several TRP channels in relevant cell types within the respiratory tract, ranging from sensory neurons to airway smooth muscle and epithelial cells. Several of these channels, such as TRPM2, TRPM8, TRPA1 and TRPV1, are discussed in much detail to show that they perform diverse, and often overlapping or contributory, roles in airway hyperreactivity, inflammation, asthma, chronic obstructive pulmonary disease and other respiratory disorders. These include TRPM2 involvement in the disruption of the bronchial epithelial tight junctions during oxidative stress, important roles of TRPA1 and TRPV1 channels in airway inflammation, hyperresponsiveness, chronic cough, and hyperplasia of airway smooth muscles, as well as TRPM8 role in COPD and mucus hypersecretion. Thus, there is increasing evidence that TRP channels not only function as an integral part of the important endogenous protective mechanisms of the respiratory tract capable of detecting and ensuring proper physiological responses to various oxidative, chemical irritant and temperature stimuli, but that altered expression, activation and regulation of these channels may also contribute to the pathogenesis of respiratory diseases.
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Affiliation(s)
- Alexander V Zholos
- Department of Biophysics, Educational and Scientific Centre "Institute of Biology", Taras Shevchenko Kiev National University, 2 Academician Glushkov Avenue, Kiev 03022, Ukraine.
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24
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Takahashi N, Matsuda Y, Yamada H, Tabeta K, Nakajima T, Murakami S, Yamazaki K. Epithelial TRPV1 signaling accelerates gingival epithelial cell proliferation. J Dent Res 2014; 93:1141-7. [PMID: 25266715 DOI: 10.1177/0022034514552826] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Transient receptor potential cation channel subfamily V member 1 (TRPV1), a member of the calcium-permeable thermosensitive transient receptor potential superfamily, is a sensor of thermal and chemical stimuli. TRPV1 is activated by noxious heat (> 43°C), acidic conditions (pH < 6.6), capsaicin, and endovanilloids. This pain receptor was discovered on nociceptive fibers in the peripheral nervous system. TRPV1 was recently found to be expressed by non-neuronal cells, such as epithelial cells. The oral gingival epithelium is exposed to multiple noxious stimuli, including heat and acids derived from endogenous and exogenous substances; however, whether gingival epithelial cells (GECs) express TRPV1 is unknown. We show that both TRPV1 mRNA and protein are expressed by GECs. Capsaicin, a TRPV1 agonist, elevated intracellular Ca(2+) levels in the gingival epithelial cell line, epi 4. Moreover, TRPV1 activation in epi 4 cells accelerated proliferation. These responses to capsaicin were inhibited by a specific TRPV1 antagonist, SB-366791. We also observed GEC proliferation in capsaicin-treated mice in vivo. No effects were observed on GEC apoptosis by epithelial TRPV1 signaling. To examine the molecular mechanisms underlying this proliferative effect, we performed complementary (c)DNA microarray analysis of capsaicin-stimulated epi 4 cells. Compared with control conditions, 227 genes were up-regulated and 232 genes were down-regulated following capsaicin stimulation. Several proliferation-related genes were validated by independent experiments. Among them, fibroblast growth factor-17 and neuregulin 2 were significantly up-regulated in capsaicin-treated epi 4 cells. Our results suggest that functional TRPV1 is expressed by GECs and contributes to the regulation of cell proliferation.
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Affiliation(s)
- N Takahashi
- Laboratory of Periodontology and Immunology, Division of Oral Science for Health Promotion, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan Division of Periodontology, Department of Oral Biological Science, Niigata University Faculty of Dentistry, Niigata, Japan
| | - Y Matsuda
- Laboratory of Periodontology and Immunology, Division of Oral Science for Health Promotion, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan Division of Periodontology, Department of Oral Biological Science, Niigata University Faculty of Dentistry, Niigata, Japan
| | - H Yamada
- Laboratory of Periodontology and Immunology, Division of Oral Science for Health Promotion, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan Division of Periodontology, Department of Oral Biological Science, Niigata University Faculty of Dentistry, Niigata, Japan
| | - K Tabeta
- Division of Periodontology, Department of Oral Biological Science, Niigata University Faculty of Dentistry, Niigata, Japan
| | - T Nakajima
- General Dentistry and Clinical Education Unit, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - S Murakami
- Department of Periodontology, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - K Yamazaki
- Laboratory of Periodontology and Immunology, Division of Oral Science for Health Promotion, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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TRPV1 antagonism by capsazepine modulates innate immune response in mice infected with Plasmodium berghei ANKA. Mediators Inflamm 2014; 2014:506450. [PMID: 25242870 PMCID: PMC4158567 DOI: 10.1155/2014/506450] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Accepted: 07/08/2014] [Indexed: 12/17/2022] Open
Abstract
Thousands of people suffer from severe malaria every year. The innate immune response plays a determinant role in host's defence to malaria. Transient receptor potential vanilloid 1 (TRPV1) modulates macrophage-mediated responses in sepsis, but its role in other pathogenic diseases has never been addressed. We investigated the effects of capsazepine, a TRPV1 antagonist, in malaria. C57BL/6 mice received 10(5) red blood cells infected with Plasmodium berghei ANKA intraperitoneally. Noninfected mice were used as controls. Capsazepine or vehicle was given intraperitoneally for 6 days. Mice were culled on day 7 after infection and blood and spleen cell phenotype and activation were evaluated. Capsazepine decreased circulating but not spleen F4/80(+)Ly6G(+) cell numbers as well as activation of both F4/80(+)and F4/80(+)Ly6G(+) cells in infected animals. In addition, capsazepine increased circulating but not spleen GR1(+) and natural killer (NK) population, without interfering with natural killer T (NKT) cell numbers and blood NK and NKT activation. However, capsazepine diminished CD69 expression in spleen NKT but not NK cells. Infection increased lipid peroxidation and the release of TNFα and IFNγ, although capsazepine-treated group exhibited lower levels of lipid peroxidation and TNFα. Capsazepine treatment did not affect parasitaemia. Overall, TRPV1 antagonism modulates the innate immune response to malaria.
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Effect of TRPV1 channel on proliferation and apoptosis of airway smooth muscle cells of rats. ACTA ACUST UNITED AC 2014; 34:504-509. [PMID: 25135718 DOI: 10.1007/s11596-014-1306-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Revised: 06/26/2014] [Indexed: 01/21/2023]
Abstract
Airway remodeling is an important pathological feature of asthma and the basis of severe asthma. Proliferation of airway smooth muscle cells (ASMCs) is a major contributor to airway remodeling. As an important Ca(2+) channel, transient receptor potential vanilloid 1 (TRPV1) plays the key role in the cell pathological and physiological processes. This study investigated the expression and activity of TRPV1 channel, and further clarified the effect of TRPV1 channel on the ASMCs proliferation and apoptosis in order to provide the scientific basis to treat asthmatic airway remodeling in clinical practice. Immunofluorescence staining and reverse transcription polymerase chain reaction (RT-PCR) were used to detect the expression of TRPV1 in rat ASMCs. Intracellular Ca(2+) was detected using the single cell confocal fluorescence microscopy measurement loaded with Fluo-4/AM. The cell cycles were observed by flow cytometry. MTT assay and Hoechst 33258 staining were used to detect the proliferation and apoptosis of ASMCs in rats respectively. The data showed that: (1) TRPV1 channel was present in rat ASMCs. (2) TRPV1 channel agonist, capsaicin, increased the Ca(2+) influx in a concentration-dependent manner (EC50=284.3±58 nmol/L). TRPV1 channel antagonist, capsazepine, inhibited Ca(2+) influx in rat ASMCs. (3) Capsaicin significantly increased the percentage of S+G2M ASMCs and the absorbance of MTT assay. Capsazepine had the opposite effect. (4) Capsaicin significantly inhibited the apoptosis, whereas capsazepine had the opposite effect. These results suggest that TRPV1 is present and mediates Ca(2+) influx in rat ASMCs. TRPV1 activity stimulates proliferation of ASMCs in rats.
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27
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Zhao L, Zhang X, Kuang H, Wu J, Guo Y, Ma L. Effect of TRPV1 channel on the proliferation and apoptosis in asthmatic rat airway smooth muscle cells. Exp Lung Res 2013; 39:283-94. [PMID: 23919305 DOI: 10.3109/01902148.2013.813610] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
BACKGROUND Hyperplasia of airway smooth muscle cells (ASMC) is a major contributor to airway remodeling in asthma. Transient receptor potential vanilloid 1 (TRPV1) is an important channel to mediate Ca(2+) influx. This study explores the expression of TRPV1 channel and its effect on the proliferation and apoptosis in rat ASMC, in order to find a new target to treat airway remodeling in asthma. METHODS Rats were sensitized and challenged with ovalbumin to replicate asthmatic models. Proliferating cell nuclear antigen (PCNA) was detected by immunohistochemistry. Reverse transcriptase-polymerase chain reaction, immunocytochemistry, and Western blot were used to detect the mRNA and protein expression of TRPV1 channel. Intracellular calcium ([Ca(2+)]i) was detected using confocal fluorescence Ca(2+) imaging. [(3)H] thymidine incorporation and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay were used to observe the DNA synthesis and proliferation. TUNEL assay was used to detect the apoptosis of ASMC. RESULTS (1) The expression of PCNA was significantly increased in intact asthmatic rat ASMC. (2) The expression of TRPV1 channel was significantly increased in asthmatic rat ASMC. (3) [Ca(2+)]i in ASMC of the asthmatic group was significantly increased. After treatment with TRPV1 agonist capsaicin (CAP), [Ca(2+)]i was further increased, whereas [Ca(2+)]i was decreased after administration of TRPV1 antagonist capsazepine (CPZ) in ASMC of the asthmatic group. (4) The DNA synthesis and absorbance of MTT were significantly increased, while apoptosis was significantly decreased in asthmatic ASMC. CAP further enhanced proliferation and decreased apoptosis. CPZ significantly inhibited the effect of CAP in asthmatic ASMC. CONCLUSION TRPV1 channel was involved in the regulation of proliferation and apoptosis in asthmatic ASMC.
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Affiliation(s)
- Limin Zhao
- Department of Respiratory and Critical Care Medicine, Zhengzhou University People's Hospital, Zhengzhou, Henan, China
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