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Wei K, Li Y, Du B, Wu J. Differences in Airway Remodeling and Emphysematous Lesions between Rats Exposed to Smoke from New-Type and Conventional Tobacco Varieties. Antioxidants (Basel) 2024; 13:511. [PMID: 38790616 PMCID: PMC11117731 DOI: 10.3390/antiox13050511] [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: 03/15/2024] [Revised: 04/17/2024] [Accepted: 04/22/2024] [Indexed: 05/26/2024] Open
Abstract
Genes from Perilla frutescens and Ocimum basilicum were introduced into N. tabacum L. var. HHY via distant hybridization, and the new-type tobacco varieties "Zisu" and "Luole" were developed, with noticeable differences in chemical composition. Smoking is the leading cause of chronic obstructive pulmonary disease (COPD), and its pathogenesis is complex. In the present study, 48 male Sprague-Dawley (SD) rats were randomly divided into four groups, namely, the control, "HHY", "Zisu" and "Luole", and then exposed to fresh air/cigarette smoke (CS) for 30 days and 60 days. The COPD model was constructed, and their health hazards were compared and evaluated. CS from different tobacco varieties influenced rats in varying degrees at the tissue, cell and molecular levels. The rats in the "HHY" group showed obvious symptoms, such as cough and dyspnea, which were less severe in the "Zisu" and "Luole" groups. Pathological and morphological analyses, including scores, MLI, MAN, WAt/Pbm and WAm/Pbm, showed that "Zisu" and "Luole" caused less damage to the airways and lung parenchyma than "HHY". Significant increases in the numbers of total leukocytes and neutrophils in the BALF were found in "HHY" compared to those in "Zisu" and "Luole". Moreover, they caused less oxidative stress and apoptosis in lung tissues, as reflected by indicators such as ROS, MDA, T-AOC, GSH, the apoptotic index and the ratio of Bcl-2 to Bax. "Zisu" and "Luole" even altered the ratios of MMP-9/TIMP-1 and IFN-γ/IL-4 in lung tissues to a lesser degree. These differences between CS-exposed rats may be closely related to the altered expression of Nrf2, p38 MAPK and p-p38 MAPK. Changes in chemical composition via introducing genes from some medicinal plants may be an attractive strategy for tobacco harm reduction.
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Affiliation(s)
- Keqiang Wei
- School of Life Science, Shanxi University, Taiyuan 030006, China
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Wei K, Zhang X, Yang J, Chen J. Tobacco introduced Perilla frutescens and Ocimum basilicum genes attenuates neutrophilic inflammation in lung tissues of COPD rats. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 271:115956. [PMID: 38215665 DOI: 10.1016/j.ecoenv.2024.115956] [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: 09/11/2023] [Revised: 12/10/2023] [Accepted: 01/06/2024] [Indexed: 01/14/2024]
Abstract
The new-type tobacco varieties "Zisu" and "Luole" were obtained by distant hybridization between N. tabacum L. var. HHY and Perilla frutescens and Ocimum basilicum, with obviously different chemical composition. Smoking is the major risk factor for COPD, characterized by neutrophil-dominant inflammation. In the present study, rat COPD model was established by cigarette exposure, and the health hazard of three varieties was compared by general condition observation, pathological and morphological evaluation, total and differential cell numeration, and characterization of major inflammatory mediators and MAPK/NF-κB pathway, etc. Rats in "HHY" group developed obvious symptoms such as cough, dyspnea, mental fatigue, etc., but these symptoms were obviously mitigated in "Zisu" and "Luole" groups. H&E staining analysis, including score, MLI, MAN, wt% and WA%, showed that "Zisu" and "Luole" significantly alleviated lung injury and the degree of airway remodeling and emphysema compared to "HHY". In BALF, the number of total leukocyte and the percent neutrophils in "Zisu" and "Luole" groups were evidently lower than "HHY" group. The levels of inflammatory mediators, such as IL-8, MPO, MIP-2, LTB4, TNF-α and neutrophil elastase, in "HHY" group were obviously higher than "Zisu" and "Luole" groups. The ROS-mediated NF-κB p65 and p38MAPK pathways may play an important role. Results indicated that tobacco introduced perilla and basil genes could remarkably attenuate recruitment, infiltration and activation of neutrophils and intervene in airway inflammation, retarding disease progression, especially "Zisu". Changes in chemical composition via breeding techniques may be a novel way for tobacco harm reduction.
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Affiliation(s)
- Keqiang Wei
- School of Life Science, Shanxi University, Taiyuan 030006, China; Xinghuacun College of Shanxi University (Shanxi Institute of Brewing Technology and Industry), Taiyuan 030006, China.
| | - Xuan Zhang
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Jinwen Yang
- College of Agronomy, Shanxi Agricultural University, Taigu 030801, China
| | - Jiayi Chen
- School of Life Science, Shanxi University, Taiyuan 030006, China
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GLP-1 mediates the neuroprotective action of crocin against cigarette smoking-induced cognitive disorders via suppressing HMGB1-RAGE/TLR4-NF-κB pathway. Int Immunopharmacol 2022; 110:108995. [PMID: 35785730 DOI: 10.1016/j.intimp.2022.108995] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/05/2022] [Accepted: 06/20/2022] [Indexed: 11/24/2022]
Abstract
Cigarette smoking (CS) has been associated with an increased risk of cognitive disorders. Although HMGB1 has been connected to various neurological ailments, its role in the pathogenesis of CS-induced cognitive impairments is undefined. With the ability of GLP-1 to lower HMGB1 expression and improve learning and memory performance, we sought to assess the potential neuroprotective efficacy of Crocin (Cro) as a GLP-1 stimulator against CS-induced cognitive impairments, with a focus on the HMGB1-RAGE/TLR4-NF-κB pathway. Fifty adult rats were specified into: Control; Cro (30 mg/kg); CS; Cro then CS and CS concurrently with Cro. Cognitive functions were assessed by MWM, EMP, and passive avoidance tests. Hippocampal levels of GLP-1, HMGB1, pro-inflammatory cytokines, and apoptotic markers were detected using ELISA, western blotting, and immunohistochemistry. Hippocampal oxidant/antioxidant status was evaluated via colorimetric determination of MDA and TAC. The results revealed that Cro either before or along with CS produced a significant improvement in learning and memory. Cro markedly hindered HMGB1-RAGE/TLR4-NF-κB pathway through enhancing GLP-1 level and expression, which in turn suppressed TNF-α and IL-1β levels and alleviated CS-induced neuroinflammation. Cro significantly counteracted CS-triggered oxidative stress as evidenced by reducing MDA level and raising TAC. Histopathologically, Cro lessened neuronal apoptosis by lowering Bax/Bcl-2 ratio at hippocampal CA2 region. These findings confirmed a GLP-1-dependent neuroprotective action of Cro against CS-induced cognitive disorders via suppressing HMGB1-RAGE/TLR4-NF-κB axis.
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Fang X, Wang Z, Qi C, Zhou J, Zhang S, Song J. The changes of MRP2 expression in three kinds of pulmonary inflammation models: the downregulation occurred in cigarette smoke extract (CSE) stimulation group and CSE plus LPS stimulation group, unchanged in LPS stimulation group. Toxicol Mech Methods 2021; 31:413-424. [PMID: 33752573 DOI: 10.1080/15376516.2021.1903638] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 03/10/2021] [Accepted: 03/10/2021] [Indexed: 01/07/2023]
Abstract
The transporter multidrug resistance protein 2 (MRP2) can transport some tobacco carcinogens and plays an important role in the transport of mediators related to pulmonary inflammatory diseases. However, it is not fully understood whether the pulmonary inflammation caused by cigarette smoke extract (CSE) and lipopolysaccharide (LPS) is related to the regulation of MRP2. In this study, CSE and LPS were used alone and in combination as stimuli to induce pulmonary inflammation. In addition, the establishment of a pulmonary inflammation model was verified by animal experiments in vivo. We found that compared with those in the control group, the expression of MRP2 protein was downregulated and the expression of inflammatory cytokines was upregulated in pulmonary inflammation in the CSE group and the CSE combined with LPS group. However, there was almost no change in the expression of MRP2 stimulated by LPS alone. Our results show that CSE and CSE combined with LPS downregulate the expression of MRP2 under inflammatory conditions, while LPS has almost no effect on the expression of MRP2 under inflammatory conditions. The in vivo experimental results of CSE combined with LPS were consistent with the cellular results of CSE combined with LPS, which provides a model and basis for other studies of the role of MRP2 in pulmonary inflammation.
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Affiliation(s)
- Xin Fang
- Institute for Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, China
- Institute for the Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Zihao Wang
- Institute for Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, China
- Institute for the Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Chuanzong Qi
- Institute for Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, China
- Institute for the Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Jian Zhou
- Institute for Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, China
- Institute for the Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Shuyi Zhang
- Institute for Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, China
- Institute for the Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Jue Song
- Institute for Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, China
- Institute for the Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
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Yue W, Chen X, He S, Li N, Zhang L, Chen J. Exposure interval to ambient fine particulate matter (PM2.5) collected in Southwest China induced pulmonary damage through the Janus tyrosine protein kinase-2/signal transducer and activator of transcription-3 signaling pathway both in vivo and in vitro. J Appl Toxicol 2021; 41:2042-2054. [PMID: 34081793 DOI: 10.1002/jat.4196] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/29/2021] [Accepted: 05/01/2021] [Indexed: 12/20/2022]
Abstract
PM2.5 is a well-known air pollutant threatening public health. Studies confirmed that exposure to the particles could impair pulmonary function, cause chronic obstructive pulmonary disease, and increase the incidence of lung cancer. The characteristic of PM2.5 varies across regions. The toxic function of PM2.5 in southwest China remains to be elucidated. This study aimed to investigate lung injury and its mechanisms induced by PM2.5 collected in Chengdu. Rats were administered with PM2.5 by intratracheal instillation for 4 weeks. Biochemical, cell count, and inflammation-related parameters were measured. Lung tissues were obtained for hematoxylin and eosin and Masson's trichrome staining. The expression levels of vascular endothelial growth factor (VEGF), Janus tyrosine protein kinase-2 (JAK-2), and signal transducer and activator of transcription-3 (STAT-3) were detected by immunohistochemistry assays. Meanwhile, A549 cells were treated with the PM2.5. The cell cycle, and apoptosis were measured by flow cytometry. mRNA and protein expressions of JAK-2, STAT-3, p-STAT-3, and VEGFA were detected using qPCR and Western blot analysis respectively. Results of in vivo study showed that PM2.5 induced lung pathological injury, aggravated the accumulation of inflammatory cells, and increased the serum levels of inflammatory factors. In vitro experiments showed that PM2.5 disrupted the cell growth cycle and increased cell apoptosis through the activation of the JAK-2/STAT-3 signaling pathway. Taken together, this study provided convincing experimental evidence that PM2.5 collected in southwest China could induce pulmonary injury as manifested by inflammatory response and lung fibrosis, possibly through the modulation of the JAK-2/STAT-3 signaling pathway.
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Affiliation(s)
- Wuyang Yue
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China.,Department of Tuberculosis Institute Research, Chongqing Public Health Medical Center/Public Health Hospital Affiliated to Southwest University, Chongqing, China
| | - Xuxi Chen
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China
| | - Sifu He
- Administration Department, Sichuan Kangchen Biotechnology Co., Chengdu, China
| | - Na Li
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China
| | - Lishi Zhang
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China
| | - Jinyao Chen
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China
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Miguel JP, Dias ADC, Bettini NR, Sousa SABAD, Durão MPL, Oliveira LVDC, Monedeiro F, Ramalho LNZ, Branco LGS, Sabino JPJ, Durand MDT. Cigarette smoke exposure causes systemic and autonomic cardiocirculatory changes in rats depending on the daily exposure dose. Life Sci 2021; 277:119498. [PMID: 33864817 DOI: 10.1016/j.lfs.2021.119498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 03/29/2021] [Accepted: 03/31/2021] [Indexed: 11/15/2022]
Abstract
AIMS To evaluate the systemic changes and autonomic cardiocirculatory control of awaken rats chronically exposed to the cigarette smoke (CS) of 1 or 2 cigarettes/day. MAIN METHODS Rats were exposed to clean air (control) or cigarette smoke of 1 (CS1) or 2 (CS2) cigarettes/animal/day for 30 days. Then, arterial pressure (AP) and heart rate (HR) were recorded in conscious rats to assess spontaneous baroreflex sensitivity and HR and AP variabilities. Evoked baroreflex and cardiac autonomic tone were evaluated by vasoactive drugs and autonomic blockers, respectively. In another group, ventilatory and cardiovascular parameters were recorded under hypoxia and hypercapnia stimulus. At the end of protocols, heart, lung, kidneys and liver were collected for histological analysis. KEY FINDINGS Rats exposed to CS showed morphological changes, being more evident in the CS2 group. Also, less weight gain and cardiac hypertrophy were prominent in CS2 rats. Basal AP and HR, spontaneous baroreflex sensitivity and cardiovascular variabilities were similar among groups. CS exposure progressively blunted the bradycardia response to phenylephrine (-2.2 ± 0.1 vs. -1.7 ± 0.2 vs. -1.5 ± 0.2) while the tachycardia response to sodium nitroprusside was slightly increased compared to control. Vagal tone was not affected by CS, but CS2 rats exhibited higher sympathetic tone (-25 ± 4 vs. -28 ± 4 vs. -56 ± 9) and lower intrinsic HR (411 ± 4 vs. 420 ± 8 vs. 390 ± 6). Exposure to CS of 2 cigarettes also exacerbated the reflex cardiovascular and ventilatory responses to hypoxia and hypercapnia. SIGNIFICANCE CS exposure for 30 days promoted systemic changes and autonomic cardiocirculatory dysfunction in rats depending on the daily exposure dose.
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Affiliation(s)
- João Paulo Miguel
- Medical School, University of Ribeirão Preto, Ribeirão Preto, SP, Brazil
| | | | | | | | | | - Lucas Vaz de Castro Oliveira
- Department of Biophysics and Physiology, Postgraduate Program in Pharmaceutical Sciences, Federal University of Piaui, Teresina, PI, Brazil
| | - Fernanda Monedeiro
- Department of Chemistry, Physiology and Basic Pathology, University of São Paulo, Ribeirão Preto, SP, Brazil
| | | | - Luiz Guilherme S Branco
- Department of Morphology, Physiology and Basic Pathology, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - João Paulo Jacob Sabino
- Department of Biophysics and Physiology, Postgraduate Program in Pharmaceutical Sciences, Federal University of Piaui, Teresina, PI, Brazil
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Ridzuan N, Zakaria N, Widera D, Sheard J, Morimoto M, Kiyokawa H, Mohd Isa SA, Chatar Singh GK, Then KY, Ooi GC, Yahaya BH. Human umbilical cord mesenchymal stem cell-derived extracellular vesicles ameliorate airway inflammation in a rat model of chronic obstructive pulmonary disease (COPD). Stem Cell Res Ther 2021; 12:54. [PMID: 33436065 PMCID: PMC7805108 DOI: 10.1186/s13287-020-02088-6] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 12/08/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) is an incurable and debilitating chronic disease characterized by progressive airflow limitation associated with abnormal levels of tissue inflammation. Therefore, stem cell-based approaches to tackle the condition are currently a focus of regenerative therapies for COPD. Extracellular vesicles (EVs) released by all cell types are crucially involved in paracrine, extracellular communication. Recent advances in the field suggest that stem cell-derived EVs possess a therapeutic potential which is comparable to the cells of their origin. METHODS In this study, we assessed the potential anti-inflammatory effects of human umbilical cord mesenchymal stem cell (hUC-MSC)-derived EVs in a rat model of COPD. EVs were isolated from hUC-MSCs and characterized by the transmission electron microscope, western blotting, and nanoparticle tracking analysis. As a model of COPD, male Sprague-Dawley rats were exposed to cigarette smoke for up to 12 weeks, followed by transplantation of hUC-MSCs or application of hUC-MSC-derived EVs. Lung tissue was subjected to histological analysis using haematoxylin and eosin staining, Alcian blue-periodic acid-Schiff (AB-PAS) staining, and immunofluorescence staining. Gene expression in the lung tissue was assessed using microarray analysis. Statistical analyses were performed using GraphPad Prism 7 version 7.0 (GraphPad Software, USA). Student's t test was used to compare between 2 groups. Comparison among more than 2 groups was done using one-way analysis of variance (ANOVA). Data presented as median ± standard deviation (SD). RESULTS Both transplantation of hUC-MSCs and application of EVs resulted in a reduction of peribronchial and perivascular inflammation, alveolar septal thickening associated with mononuclear inflammation, and a decreased number of goblet cells. Moreover, hUC-MSCs and EVs ameliorated the loss of alveolar septa in the emphysematous lung of COPD rats and reduced the levels of NF-κB subunit p65 in the tissue. Subsequent microarray analysis revealed that both hUC-MSCs and EVs significantly regulate multiple pathways known to be associated with COPD. CONCLUSIONS In conclusion, we show that hUC-MSC-derived EVs effectively ameliorate by COPD-induced inflammation. Thus, EVs could serve as a new cell-free-based therapy for the treatment of COPD.
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Affiliation(s)
- Noridzzaida Ridzuan
- Lung Stem Cell and Gene Therapy Group, Regenerative Medicine Cluster, Advanced Medical and Dental Institute (IPPT), SAINS@BERTAM, Universiti Sains Malaysia, 13200, Bertam, Penang, Malaysia
| | - Norashikin Zakaria
- Lung Stem Cell and Gene Therapy Group, Regenerative Medicine Cluster, Advanced Medical and Dental Institute (IPPT), SAINS@BERTAM, Universiti Sains Malaysia, 13200, Bertam, Penang, Malaysia
| | - Darius Widera
- Stem Cell Biology and Regenerative Medicine, School of Pharmacy, University of Reading, Reading, RG6 6AP, UK
| | - Jonathan Sheard
- Stem Cell Biology and Regenerative Medicine, School of Pharmacy, University of Reading, Reading, RG6 6AP, UK
| | - Mitsuru Morimoto
- RIKEN Centre for Developmental Biology, 2-2-3 Minatojima-minamimachi, Chuou-ku, Kobe, 650-0047, Japan
| | - Hirofumi Kiyokawa
- RIKEN Centre for Developmental Biology, 2-2-3 Minatojima-minamimachi, Chuou-ku, Kobe, 650-0047, Japan
| | - Seoparjoo Azmel Mohd Isa
- Department of Pathology, School of Medical Sciences, Health Campus, Universiti Sains Malaysia, 16150, Kubang Kerian, Malaysia
| | - Gurjeet Kaur Chatar Singh
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, 11800, Gelugor, Penang, Malaysia
| | - Kong-Yong Then
- CryoCord Sdn Bhd, Bio-X Centre, 63000, Cyberjaya, Selangor, Malaysia
| | - Ghee-Chien Ooi
- CryoCord Sdn Bhd, Bio-X Centre, 63000, Cyberjaya, Selangor, Malaysia
| | - Badrul Hisham Yahaya
- Lung Stem Cell and Gene Therapy Group, Regenerative Medicine Cluster, Advanced Medical and Dental Institute (IPPT), SAINS@BERTAM, Universiti Sains Malaysia, 13200, Bertam, Penang, Malaysia.
- USM-RIKEN International Centre for Ageing Science (URICAS), Universiti Sains Malaysia, 11800, Gelugor, Penang, Malaysia.
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Jia W, Wang W, Li R, Zhou Q, Qu Y, Jia Y, Zhang Z, Wan C, Zhang W. Effect of Qinbai Qingfei Concentrated Pellets on substance P and neutral endopeptidase of rats with post-infectious cough. BMC Complement Med Ther 2020; 20:289. [PMID: 32962697 PMCID: PMC7507634 DOI: 10.1186/s12906-020-03081-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 09/13/2020] [Indexed: 01/17/2023] Open
Abstract
Background In recent years, it has been reported that Qinbai Qingfei Concentrated Pellet (QQCP) has the effect of relieving cough and reducing sputum. However, the therapeutic potentials of QQCP on post-infectious cough (PIC) rat models has not been elucidated. So the current study was aimed to scientifically validate the efficacy of QQCP in post infectious cough. Methods All rats were exposed to sawdust and cigarette smokes for 10 days, and intratracheal lipopolysaccharide (LPS) and capsaicin aerosols. Rats were treated with QQCP at dose of 80, 160, 320 mg/kg. Cough frequency was monitored twice a day for 10 days after drug administration. Inflammatory cell infiltration was determined by ELISA. Meanwhile, the histopathology of lung tissue and bronchus in rats were evaluated by hematoxylin-eosin staining (H&E). Neurogenetic inflammation were measured by ELISA and qRT-PCR. Results QQCP dose-dependently decreased the cough frequency and the release of pro-inflammatory cytokines TNF-α, IL-1β, IL-6 and IL-8, but exerted the opposite effects on the secretion of anti-inflammatory cytokines IL-10 and IL-13 in BALF and serum of PIC rats. The oxidative burden was effectively ameliorated in QQCP-treated PIC rats as there were declines in Malondialdehyde (MDA) content and increases in Superoxide dismutase (SOD) activity in the serum and lung tissue. In addition, QQCP blocked inflammatory cell infiltration into the lung as evidenced by the reduced number of total leukocytes and the portion of neutrophils in the broncho - alveolar lavage fluid (BALF) as well as the alleviated lung damage. Furthermore, QQCP considerable reversed the neurogenetic inflammation caused by PIC through elevating neutral endopeptidase (NEP) activity and reducing Substance P (SP) and Calcitonin gene related peptide (CGRP) expression in BALF, serum and lung tissue. Conclusions Our study indicated that QQCP demonstrated a protective role of PIC and may be a potential therapeutic target of PIC.
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Affiliation(s)
- Weigang Jia
- Department of Emergency, Nangang Branch of Heilongjiang Academy of Traditional Chinese Medicine, Harbin, 150001, China
| | - Wei Wang
- Department of Emergency, Nangang Branch of Heilongjiang Academy of Traditional Chinese Medicine, Harbin, 150001, China
| | - Rui Li
- Department of Emergency, Nangang Branch of Heilongjiang Academy of Traditional Chinese Medicine, Harbin, 150001, China
| | - Quanyu Zhou
- Department of Emergency, Nangang Branch of Heilongjiang Academy of Traditional Chinese Medicine, Harbin, 150001, China
| | - Ying Qu
- Department of Orthopedics, Heilongjiang Provincial Hospital, Harbin, 150036, China.
| | - Yumei Jia
- The First Arrached Hostopal of Hebei Norruers Institlte, Zhangjiakou, 075000, China
| | - Zhiheng Zhang
- Department of Emergency, Nangang Branch of Heilongjiang Academy of Traditional Chinese Medicine, Harbin, 150001, China
| | - Chengwei Wan
- Gushi County Hospital of Traditional Chinese Medicine, Gushi, 465200, China
| | - Wanwan Zhang
- Department of Emergency, Nangang Branch of Heilongjiang Academy of Traditional Chinese Medicine, Harbin, 150001, China
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Gu C, Zhang Q, Ni D, Xiao QF, Cao LF, Fei CY, Ying Y, Li N, Tao F. Therapeutic Effects of SRT2104 on Lung Injury in Rats with Emphysema via Reduction of Type II Alveolar Epithelial Cell Senescence. COPD 2020; 17:444-451. [PMID: 32722945 DOI: 10.1080/15412555.2020.1797657] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is one of the most prevalent and severe diseases worldwide with high societal and health care costs. The pathogenesis of COPD is very complicated, and no curative treatment is available. Cellular senescence promotes the development of COPD. Type II alveolar epithelial cells (AECII) play a momentous role in lung tissue repair and maintenance of alveolar homeostasis. Sirtuin 1 (SIRT1), an antiaging molecule involved in the response to chronic inflammation and oxidative stress, regulates many pathophysiological changes including stress resistance, apoptosis, inflammation, and cellular senescence. This study aimed to investigate whether the pharmacological SIRT1 activator SRT2104 protects against AECII senescence in rats with emphysema. Our findings confirmed that SRT2104 administration reduced the pathological characteristics of emphysema and improved lung function parameters, including pulmonary resistance, pulmonary dynamic compliance, and peak expiratory flow. Moreover, SRT2104 treatment upregulated the expression of surfactant proteins A and C, SIRT1, and forkhead box O 3a (FoxO3a), decreased senescence-associated-β-galactosidase (SA-β-gal) activity, increased SIRT1 deacetylase activity, and downregulated the levels of p53 and p21. Therefore, SRT2104 administration protected against AECII senescence in rats with emphysema via SIRT1/FoxO3a and SIRT1/p53 signaling pathways and may provide a novel potential therapeutic strategy for COPD.
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Affiliation(s)
- Chao Gu
- Department of Respiratory Medicine, The First Hospital of Jiaxing (the Affiliated Hospital of Jiaxing University), Jiaxing, Zhejiang, People's Republic of China
| | - Qi Zhang
- Department of Respiratory Medicine, The First Hospital of Jiaxing (the Affiliated Hospital of Jiaxing University), Jiaxing, Zhejiang, People's Republic of China
| | - Dan Ni
- Department of Respiratory Medicine, The First Hospital of Jiaxing (the Affiliated Hospital of Jiaxing University), Jiaxing, Zhejiang, People's Republic of China
| | - Qin-Feng Xiao
- Department of Respiratory Medicine, The First Hospital of Jiaxing (the Affiliated Hospital of Jiaxing University), Jiaxing, Zhejiang, People's Republic of China
| | - Lin-Feng Cao
- Department of Respiratory Medicine, The First Hospital of Jiaxing (the Affiliated Hospital of Jiaxing University), Jiaxing, Zhejiang, People's Republic of China
| | - Chun-Yuan Fei
- Department of Respiratory Medicine, The First Hospital of Jiaxing (the Affiliated Hospital of Jiaxing University), Jiaxing, Zhejiang, People's Republic of China
| | - Ying Ying
- Department of Respiratory Medicine, The First Hospital of Jiaxing (the Affiliated Hospital of Jiaxing University), Jiaxing, Zhejiang, People's Republic of China
| | - Na Li
- Department of Respiratory Medicine, The First Hospital of Jiaxing (the Affiliated Hospital of Jiaxing University), Jiaxing, Zhejiang, People's Republic of China
| | - Feng Tao
- Department of Respiratory Medicine, The First Hospital of Jiaxing (the Affiliated Hospital of Jiaxing University), Jiaxing, Zhejiang, People's Republic of China
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Yang WK, Lyu YR, Kim SH, Chae SW, Kim KM, Jung IC, Park YC. Protective Effect of GHX02 Extract on Particulate Matter-Induced Lung Injury. J Med Food 2020; 23:611-632. [PMID: 32316823 DOI: 10.1089/jmf.2019.4568] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Industrial development, along with the rapid growth of the economy, has greatly improved the quality of life in humans. Moreover, advancements in medical technology have increased life expectancy. Small particles increase airway inflammation when they penetrate the alveoli. We observed that GHX02 decreased the frequency and delayed the onset time of citric acid-induced coughing in guinea pigs. A phenol red secretion assay indicated that the GHX02 extract exhibits potent expectorant activity. The GHX02 extract also greatly reduced leukocyte levels. Our results indicate that GHX02 inhibits airway inflammation, reduces sputum production, and relieves cough. The GHX02 extract suppressed histamine release from mast cells resulting from compound 48/80-induced degranulation. The extract exhibited antimicrobial activity against Streptococcus pneumoniae and significantly inhibited the formation of LTC4. At high concentrations, the GHX02 extract suppressed the formation of PGE2 (prostaglandin E2). Interleukin (IL)-4 and IL-13 levels decreased with an increasing dosage of GHX02. Oral administration of the GHX02 extract suppressed PM10D-induced inflammatory symptoms in the lung, including increased alveolar wall thickness, accumulation of collagen fibers, and cytokine release. Treatment with the GHX02 extract also resulted in lower levels of inflammatory cells, in bronchoalveolar lavage fluid and lung tissue. Our results indicate that GHX02 may be a useful therapeutic agent for treatment of respiratory diseases.
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Affiliation(s)
- Won-Kyung Yang
- Department of Internal Medicine and College of Korean Medicine, Daejeon University, Daejeon, Korea.,Institute of Traditional Medicine and Bioscience, Daejeon University, Daejeon, Korea
| | - Yee Ran Lyu
- Department of Internal Medicine and College of Korean Medicine, Daejeon University, Daejeon, Korea
| | - Seung-Hyung Kim
- Institute of Traditional Medicine and Bioscience, Daejeon University, Daejeon, Korea
| | - Sung-Wook Chae
- Herbal Medicine Division, Korea Institute of Oriental Medicine, Daejeon, Korea
| | - Ki Mo Kim
- Herbal Medicine Division, Korea Institute of Oriental Medicine, Daejeon, Korea
| | - In Chul Jung
- Department of Neuropsychiatry, College of Korean Medicine, Daejeon University, Daejeon, Korea
| | - Yang-Chun Park
- Department of Internal Medicine and College of Korean Medicine, Daejeon University, Daejeon, Korea.,Institute of Traditional Medicine and Bioscience, Daejeon University, Daejeon, Korea
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11
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Su J, Li J, Lu Y, Li N, Li P, Wang Z, Wu W, Liu X. The rat model of COPD skeletal muscle dysfunction induced by progressive cigarette smoke exposure: a pilot study. BMC Pulm Med 2020; 20:74. [PMID: 32293377 PMCID: PMC7092612 DOI: 10.1186/s12890-020-1109-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 03/09/2020] [Indexed: 12/13/2022] Open
Abstract
Background Chronic obstructive pulmonary disease (COPD) skeletal muscle dysfunction is a prevalent malady that significantly affects patients’ prognosis and quality of life. Although the study of this disease has attracted considerable attention, a definite animal model is yet to be established. This study investigates whether smoke exposure could lead to the development of a COPD skeletal muscle dysfunction model in rats. Methods Sprague Dawley rats were randomly divided into model (MG, n = 8) and control groups (CG, n = 6). The MG was exposed to cigarette smoke for 16 weeks while the CG was not. The body weight and forelimb grip strength of rats were monitored monthly. The pulmonary function and the strength of tibialis anterior muscle were assessed in vitro and compared after establishing the model. The histological changes in lung and gastrocnemius muscles were observed. The expressions of interleukin (IL)-6, IL-8, and tumor necrosis factor (TNF)-α were detected by ELISA, while the expressions of Atrogin-1 and MuRF1 in the gastrocnemius muscle were determined by Western blotting. Results Smoke exposure slowly increases the body weight and forelimb grip strength of MG rats, compared to CG rats. However, it significantly decreases the pulmonary ventilation function and the skeletal muscle contractility of the MG in vitro. Histologically, the lung tissues of MG show typical pathological manifestations of emphysema, while the skeletal muscles present muscular atrophy. The expressions of IL-6, IL-8, and TNF-α in MG rats are significantly higher than those measured in CG rats. Increased levels of Atrogin-1 and MuRF1 were also detected in the gastrocnemius muscle tissue of MG. Conclusion Progressive smoking exposure decreases the contractile function of skeletal muscles, leading to muscular atrophy. It also increases the expressions of inflammatory and muscle protein degradation factors in COPD rats. This indicates that smoke exposure could be used to establish a COPD skeletal muscle dysfunction model in rats.
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Affiliation(s)
- Jianqing Su
- Department of Sports Medicine, Shanghai University of Sport, Shanghai, 200438, China
| | - Jian Li
- Department of Sports Medicine, Shanghai University of Sport, Shanghai, 200438, China
| | - Yufan Lu
- Department of Sports Medicine, Shanghai University of Sport, Shanghai, 200438, China
| | - Ning Li
- Department of Sports Medicine, Shanghai University of Sport, Shanghai, 200438, China
| | - Peijun Li
- Department of Sports Medicine, Shanghai University of Sport, Shanghai, 200438, China
| | - Zhengrong Wang
- Department of Sports Medicine, Shanghai University of Sport, Shanghai, 200438, China
| | - Weibing Wu
- Department of Sports Medicine, Shanghai University of Sport, Shanghai, 200438, China.
| | - Xiaodan Liu
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.,Institute of Rehabilitation Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, 201203, China
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12
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Li S, Jiang L, Yang Y, Cao J, Zhang Q, Zhang J, Wang R, Deng X, Li Y. Siglec1 enhances inflammation through miR-1260-dependent degradation of IκBα in COPD. Exp Mol Pathol 2020; 113:104398. [PMID: 32007531 DOI: 10.1016/j.yexmp.2020.104398] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 12/24/2019] [Accepted: 01/30/2020] [Indexed: 02/07/2023]
Abstract
It has been documented that sialic acid-binding Ig-like lectin 1 (Siglec1) is a cell surface protein with a variety of functions in the immune system. In the present study, we evaluated whether Siglec1 plays a role in chronic obstructive pulmonary disease (COPD). Results show that the expression of Siglec1 was increased in the lung of COPD rats, and that Siglec1 overexpression greatly enhanced the expression of inflammatory cytokines including tumor necrosis factor α (TNF-α), interleukin 1β (IL-1β) and IL-6 in cigarette smoke extract (CSE)-treated NR8383 cells, a rat lung-derived macrophage cell line. Notably, the proinflammatory effect of Siglec1 was totally inhibited by overexpression of nuclear factor of κ light polypeptide gene enhancer in B-cells inhibitor α (IκBα). Importantly, Siglec1 overexpression increased miR-1260, which then degraded IκBα through its 3' untranslated region (3'UTR). Further study demonstrated that miR-1260 inhibitor attenuated inflammation in CSE-induced rat COPD lung and in CSE-treated NR8383 cells. Finally, the inhibitory effect of miR-1260 on inflammation was totally lost when IκBα was inhibited. In summary, the present study demonstrated that Siglec1 exerts its proinflammatory effects through increasing miR-1260, leading to decreased expression of IκBα.
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Affiliation(s)
- Sensen Li
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, Jiangsu, China; Department of Pharmacy, Luohe Central Hospital, Luohe 462000, Henan, China
| | - Longfeng Jiang
- Department of Infectious Diseases, The First Affiliated Hospital with Nanjing Medical University, Nanjing 210002, Jiangsu, China
| | - Yanbing Yang
- Department of Respiratory Medicine, Luohe Central Hospital, Luohe 462000, Henan, China
| | - Juan Cao
- Department of Respiratory Medicine, Luohe Central Hospital, Luohe 462000, Henan, China
| | - Qi Zhang
- Huadong Research Institute for Medicine and Biotechnics, Nanjing 210002, Jiangsu, China
| | - Jinghai Zhang
- Huadong Research Institute for Medicine and Biotechnics, Nanjing 210002, Jiangsu, China
| | - Rui Wang
- Department of Pharmacy, Luohe Central Hospital, Luohe 462000, Henan, China
| | - Xiaozhao Deng
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, Jiangsu, China; Huadong Research Institute for Medicine and Biotechnics, Nanjing 210002, Jiangsu, China.
| | - Yaojun Li
- Department of Respiratory Medicine, Luohe Central Hospital, Luohe 462000, Henan, China.
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13
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Tanner L, Single AB. Animal Models Reflecting Chronic Obstructive Pulmonary Disease and Related Respiratory Disorders: Translating Pre-Clinical Data into Clinical Relevance. J Innate Immun 2019; 12:203-225. [PMID: 31527372 PMCID: PMC7265725 DOI: 10.1159/000502489] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 07/25/2019] [Accepted: 07/25/2019] [Indexed: 12/17/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) affects the lives of an ever-growing number of people worldwide. The lack of understanding surrounding the pathophysiology of the disease and its progression has led to COPD becoming the third leading cause of death worldwide. COPD is incurable, with current treatments only addressing associated symptoms and sometimes slowing its progression, thus highlighting the need to develop novel treatments. However, this has been limited by the lack of experimental standardization within the respiratory disease research area. A lack of coherent animal models that accurately represent all aspects of COPD clinical presentation makes the translation of promising in vitrodata to human clinical trials exceptionally challenging. Here, we review current knowledge within the COPD research field, with a focus on current COPD animal models. Moreover, we include a set of advantages and disadvantages for the selection of pre-clinical models for the identification of novel COPD treatments.
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Affiliation(s)
- Lloyd Tanner
- Respiratory Medicine and Allergology, Department of Clinical Sciences Lund, Lund University, Lund, Sweden,
| | - Andrew Bruce Single
- Respiratory Medicine and Allergology, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
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14
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Chertok VM, Zakharchuk NV, Nevzorova VA, Chertok AG. [The distribution of matrix metalloproteinases and their tissue inhibitors in the brain vascular bed exposed to chronic tobacco smoke]. Zh Nevrol Psikhiatr Im S S Korsakova 2019; 118:65-71. [PMID: 30040803 DOI: 10.17116/jnevro20181186165] [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] [Indexed: 12/17/2023]
Abstract
AIM To study the distribution of MMP-2 and MMP-9 and their inhibitors (TIMP-2 and TIMP-1 respectively) in the brain vascular bed of rats exposed to chronic tobacco smoke. MATERIAL AND METHODS Localization and expression of MMP-2, MMP-9, TIMP-2 and TIMP-1 in the pial branches (I-V order vessels), intracerebral arteries and capillaries of rats exposed to tobacco smoke were studied for 36 weeks. The level of enzymatic activity was assessed by the relative quantity of enzymopositive arteries and amount of fragments per 1 mm2 and rate of immunohistochemical reaction. Specific capillary density per mm2 of brain tissue and optical density of the immunohistochemical product were calculated. RESULTS MMP-2 and TIMP-2 were found in all segments of the arterial course in control animals. In rats exposed to tobacco smoking, the expression of MMP-2 increased only in intracerebral arteries and capillaries while TIMP-2 level decreased. MMP-9 and TIMP-1 were noted only in single vessels, mainly small pial and intracerebral arteries, in intact animals. In rats exposed to tobacco smoke, MMP-9 expression significantly increased in all segments of the arterial course whereas the increase in TIMP-1 was observed mainly in large pial arteries. CONCLUSION In physiological conditions, the dynamic balance between MMP-2 and TIMP-2 maintains basic tissue metabolism. Products of tobacco combustion are inductors of the inducible MMP-9 which promotes morphofunctional changes. The imbalance in MMP-9 - TIMP-1 system causes the degradation of extracellular matrix in different segments of the brain arterial course promoting the development of cerebral dysfunction.
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Affiliation(s)
- V M Chertok
- Pacific State Medical University, Vladivostok, Russia
| | | | - V A Nevzorova
- Pacific State Medical University, Vladivostok, Russia
| | - A G Chertok
- Pacific State Medical University, Vladivostok, Russia
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15
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Jing L, Su S, Zhang D, Li Z, Lu D, Ge R. Srolo Bzhtang, a traditional Tibetan medicine formula, inhibits cigarette smoke induced airway inflammation and muc5ac hypersecretion via suppressing IL-13/STAT6 signaling pathway in rats. JOURNAL OF ETHNOPHARMACOLOGY 2019; 235:424-434. [PMID: 30731182 DOI: 10.1016/j.jep.2019.02.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 02/03/2019] [Accepted: 02/03/2019] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Srolo Bzhtang (SBT), a traditional Tibetan medicine formula, was composed of three herbs, Solms-Laubachia eurycarpa, Bergenia purpurascens, Glycyrrhiza uralensis, and one lac, and was first documented in the ancient Tibetan medical work Four Medical Tantras (rGyud-bzhi) in the eighth century AD. It has been widely used to treat lung "phlegm-heat" syndromes such as chronic bronchitis and chronic obstructive pulmonary disease (COPD). OBJECTIVE The aim of this study was to evaluate the potential influences of aqueous extract of SBT on airway inflammation and mucus secretion and to reveal the underlying mechanism in a rat model of cigarette smoke (CS)-induced chronic bronchitis (CB). MATERIALS AND METHODS Sixty male Sprague-Dawley rats were randomly divided to six groups: control (room air exposure), model (CS exposure), DEX (CS exposure and 0.2 mg/kg/day dexamethasone), and three SBT (CS exposure and 1.67, 2.50, and 3.34 g/kg/day SBT) groups. DEX and the three doses of SBT were administered by oral gavage every day for eight weeks. Pathological changes and mucus expression in the lung tissue were determined by hematoxylin and eosin (H&E), Alcian blue-periodic acid-Schiff (AB-PAS) and immunohistochemical staining. The levels of cytokines in bronchoalveolar lavage fluid (BALF) were assessed by ELISA. Western blot analysis and qRT-PCR were performed to explore the effects of SBT on the expression of IL-13, STAT6 and MUC5AC. RESULTS Pretreatment with SBT attenuated the TNF-α, IL-8, IL-13 expression levels in BALF and the inflammatory cell infiltration in bronchial walls and peribronchial lung tissue. SBT exhibited a dose-dependent downregulation of MUC5AC expression as assessed by AB-PAS and immunohistochemical staining. The protein and mRNA levels of IL-13, STAT6/p-STAT6 and MUC5AC were also downregulated by SBT preconditioning. CONCLUSION These results for the first time demonstrated that SBT exhibited protective effects on CS-induced airway inflammation and MUC5AC hypersecretion, which might be related to the downregulation of the IL-13/STAT6 signaling pathway.
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Affiliation(s)
- Linde Jing
- Research Center for High Altitude Medicine, Qinghai University, Xining 810001, China; Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province, Xining 810001, China
| | - Shanshan Su
- Xining Customs District, Key Laboratory of Food Safety Research in Qinghai Province, Xining 810003, China
| | - Dejun Zhang
- School of Ecological and Environmental Engineering, Qinghai University, Xining 810016
| | - Zhanqiang Li
- Research Center for High Altitude Medicine, Qinghai University, Xining 810001, China; Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province, Xining 810001, China.
| | - Dianxiang Lu
- Research Center for High Altitude Medicine, Qinghai University, Xining 810001, China; Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province, Xining 810001, China.
| | - Rili Ge
- Research Center for High Altitude Medicine, Qinghai University, Xining 810001, China; Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province, Xining 810001, China.
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16
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Pan M, Zheng Z, Chen Y, Sun N, Zheng B, Yang Q, Zhang Y, Li X, Meng Y. Angiotensin-(1-7) Attenuated Cigarette Smoking-related Pulmonary Fibrosis via Improving the Impaired Autophagy Caused by Nicotinamide Adenine Dinucleotide Phosphate Reduced Oxidase 4-Dependent Reactive Oxygen Species. Am J Respir Cell Mol Biol 2019; 59:306-319. [PMID: 29652517 DOI: 10.1165/rcmb.2017-0284oc] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Cigarette smoking is acknowledged as the major risk factor of pulmonary fibrosis. Angiotensin (Ang) II has been reported to aggravate smoking-induced lung fibrosis, whereas the effect of Ang-(1-7) on smoking-related lung fibrosis remains unknown. The autophagy, being activated by reactive oxygen species (ROS), is identified as a novel mechanism of pulmonary fibrosis. However, whether autophagy is involved in regulation of smoking-induced lung fibrosis still needs investigation. Here, we aim to investigate the effect of Ang-(1-7) on smoking-related lung fibrosis by the regulation of autophagy and ROS. In vivo, Ang-(1-7) was constantly infused into passive smoking rats for 8 weeks. In vitro, primary lung fibroblasts were pretreated with antioxidant, nicotinamide adenine dinucleotide phosphate reduced oxidase (NOX) 4 siRNA, or light chain (LC) 3B siRNA before exposure to cigarette smoke extract (CSE). GFP-mCherry red fluorescent protein-LC3 advenovirus was introduced to evaluate the autophagic flux in cells. We found that Ang-(1-7) reduced hydrogen peroxide (H2O2) concentration, protein levels of NOX4, and autophagy impairment, as well as improving lung fibrosis induced by smoking stimulation in vivo. In vitro, CSE treatment elevated NOX4 protein expression and ROS production, resulting in the accumulation of impaired autophagosomes in fibroblasts. LC3B depletion enhanced CSE-induced collagen synthesis. Treatment with antioxidants or NOX4 siRNA inhibited CSE-induced insufficient autophagic flux and collagen production. In contrast, the action of Ang-(1-7) opposed the effects of CSE. In conclusion, Ang-(1-7) improves smoking-induced pulmonary fibrosis via attenuating the impaired autophagy caused by NOX4-dependent ROS in vivo and in vitro.
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Affiliation(s)
- Miaoxia Pan
- 1 Departments of Respiratory and Critical Care Medicine, Chronic Airways Diseases Laboratory, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zemao Zheng
- 1 Departments of Respiratory and Critical Care Medicine, Chronic Airways Diseases Laboratory, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yan Chen
- 2 Department of General Medicine, Panyu Central Hospital, Guangzhou, China
| | - Nana Sun
- 1 Departments of Respiratory and Critical Care Medicine, Chronic Airways Diseases Laboratory, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Bojun Zheng
- 1 Departments of Respiratory and Critical Care Medicine, Chronic Airways Diseases Laboratory, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qianjie Yang
- 1 Departments of Respiratory and Critical Care Medicine, Chronic Airways Diseases Laboratory, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yue Zhang
- 1 Departments of Respiratory and Critical Care Medicine, Chronic Airways Diseases Laboratory, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xu Li
- 3 State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China; and.,4 Department of Emergency Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ying Meng
- 1 Departments of Respiratory and Critical Care Medicine, Chronic Airways Diseases Laboratory, Nanfang Hospital, Southern Medical University, Guangzhou, China
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17
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Saco TV, Breitzig MT, Lockey RF, Kolliputi N. Epigenetics of Mucus Hypersecretion in Chronic Respiratory Diseases. Am J Respir Cell Mol Biol 2018; 58:299-309. [PMID: 29096066 DOI: 10.1165/rcmb.2017-0072tr] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Asthma, chronic obstructive pulmonary disease, and cystic fibrosis are three chronic pulmonary diseases that affect an estimated 420 million individuals across the globe. A key factor contributing to each of these conditions is mucus hypersecretion. Although management of these diseases is vastly studied, researchers have only begun to scratch the surface of the mechanisms contributing to mucus hypersecretion. Epigenetic regulation of mucus hypersecretion, other than microRNA post-translational modification, is even more scarcely researched. Detailed study of epigenetic mechanisms, such as DNA methylation and histone modification, could not only help to better the understanding of these respiratory conditions but also reveal new treatments for them. Because mucus hypersecretion is such a complex event, there are innumerable genes involved in the process, which are beyond the scope of a single review. Therefore, the purpose of this review is to narrow the focus and summarize specific epigenetic research that has been conducted on a few aspects of mucus hypersecretion in asthma, chronic obstructive pulmonary disease, cystic fibrosis, and some cancers. Specifically, this review emphasizes the contribution of DNA methylation and histone modification of particular genes involved in mucus hypersecretion to identify possible targets for the development of future therapies for these conditions. Elucidating the role of epigenetics in these respiratory diseases may provide a breath of fresh air to millions of affected individuals around the world.
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Affiliation(s)
- Tara V Saco
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida
| | - Mason T Breitzig
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida
| | - Richard F Lockey
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida
| | - Narasaiah Kolliputi
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida
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18
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Zhao YL, Yang ZF, Shang JH, Huang WY, Wang B, Wei X, Khan A, Yuan ZW, Liu YP, Wang YF, Wang XH, Luo XD. Effects of indole alkaloids from leaf of Alstonia scholaris on post-infectious cough in mice. JOURNAL OF ETHNOPHARMACOLOGY 2018; 218:69-75. [PMID: 29496577 PMCID: PMC7126965 DOI: 10.1016/j.jep.2018.02.040] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 02/25/2018] [Accepted: 02/25/2018] [Indexed: 05/15/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Leaf of Alstonia scholaris (L.) R. Br. (Apocynaceae), a wide used ethic-medicine in many Asia and Africa counties, has also been recorded as the common traditional Chinese medicine for treatment of illnesses in respiratory system by Dai people. AIM OF THE STUDY To provide experimental data of clinical adaption of total indole alkaloids (TA) from leaf of A. scholaris for treating post-infectious cough in phase II clinical trial. MATERIALS AND METHODS To model post-infectious cough, all animals except control group were instilled intra-tracheal with lipopolysaccharide (LPS) (80 μg/50 µL/mouse), followed by subsequent exposure to cigarette smoke (CS) for 30 min per day for a total of 30 days. Mice were orally given TA at dose of 10, 25, 50 mg/kg, and four main alkaloids (Sch: scholaricine, Epi: 19-epischolaricine, Val: vallesamine, Pic: picrinine) once daily. Cellular infiltration was assessed in the broncho-alveolar lavage fluid (BALF). Expression of interleukin-6 (IL-6) and C-reactive protein (CRP) in the serum was determined, the superoxide dismutase (SOD) activity as well as malondialdehyde (MDA) content in the serum and homogenate were examined. Finally, histopathological examination in the lungs was assessed by H. E. staining. RESULTS After administration of TA and four major alkaloids respectively, the symptoms of cough in mice were obviously attenuated. Total white blood cells (WBC) and neutrophils (NEU) amounts in BALF were reduced obviously and the pathological damage of lung was also attenuated. There was also significant reduction in IL-6, CRP, MDA and a marked improvement in SOD. CONCLUSIONS The efficacy of indole alkaloids against post-infectious cough (PIC) was shown in the down-regulation of inflammatory cells, cytokines, and the balance of antioxidants. What's more, the pharmacological effects of TA were better than single indole alkaloid, which might be related to the synergic effect of four major alkaloids.
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Affiliation(s)
- Yun-Li Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Zi-Feng Yang
- Guangzhou Medical University, Guangzhou 511436, China
| | - Jian-Hua Shang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Wan-Yi Huang
- Guangzhou Medical University, Guangzhou 511436, China
| | - Bei Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Xin Wei
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Afsar Khan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan
| | - Zhi-Wei Yuan
- Second Hospital Affiliated to Kunming Medical University, Kunming 650101, Yunnan Province, China
| | - Ya-Ping Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Yi-Fen Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Xin-Hua Wang
- Guangzhou Medical University, Guangzhou 511436, China.
| | - Xiao-Dong Luo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; Guangzhou Medical University, Guangzhou 511436, China.
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19
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Xu F, Lin J, Cui W, Kong Q, Li Q, Li L, Wei Y, Dong J. Scutellaria baicalensis Attenuates Airway Remodeling via PI3K/Akt/NF- κB Pathway in Cigarette Smoke Mediated-COPD Rats Model. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2018; 2018:1281420. [PMID: 29861765 PMCID: PMC5971322 DOI: 10.1155/2018/1281420] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Revised: 01/27/2018] [Accepted: 02/11/2018] [Indexed: 11/29/2022]
Abstract
Background. Scutellaria baicalensis (SB) is commonly used in traditional Chinese medicine for chronic inflammatory diseases. This study aims to investigate the effects of the early intervention with SB on airway remodeling in a well-established rat model of COPD induced by cigarette smoking. Methods. COPD model in Sprague Dawley (SD) rats were established by exposing them to smoke for 6 days/week, for 12 weeks, 24 weeks, or 36 weeks. Meanwhile, rats were randomly divided into normal control group, model group, Budesonide (BUD) group, and the SB (low, middle, and high) dose groups with 8 rats in each group and 3 stages (12 weeks, 24 weeks, and 36 weeks). After treatment, the pulmonary function was evaluated by BUXCO system and the morphology changes of the lungs were observed with HE and Masson staining. The serum IL-6, IL-8, and IL-10 and TNF-α, TGF-beta (TGF-β1), MMP-2, MMP-9, and TIMP-1 levels in BALF were detected by ELISA-kit assay. The protein expression levels of AKT and NF-κB (p65) were determined by western blot (WB). Results. The oral of SB significantly improved pulmonary function (PF) and ameliorated the pathological damage and attenuated inflammatory cytokines infiltration into the lungs. Meanwhile, the levels of TGF-β, MMP-2, MMP-9, and TIMP-1 were partially significantly decreased. The levels of PI3K/AKT/NF-κB pathway were also markedly suppressed by SB. Conclusions. SB could significantly improve the condition of airway remodeling by inhibiting airway inflammation and partially quenching TGF-β and MMPs via PI3K/AKT/NF-κB pathway.
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Affiliation(s)
- Fei Xu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Jinpei Lin
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Wenqiang Cui
- Department of Integrative Medicine and Neurobiology, State Key Laboratory of Medical Neurobiology, Institute of Acupuncture Research, School of Basic Medical Science, Fudan University, Shanghai, China
| | - Qing Kong
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Qiuping Li
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Lulu Li
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Ying Wei
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Jingcheng Dong
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institutes of Integrative Medicine, Fudan University, Shanghai, China
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Possebon L, de Souza Lima Lebron I, Furlan da Silva L, Tagliaferri Paletta J, Glad BG, Sant’Ana M, Iyomasa-Pilon MM, Ribeiro Souza H, de Souza Costa S, Pereira da Silva Rodriguesa G, Pereira MDL, de Haro Moreno A, Girol AP. Anti-inflammatory actions of herbal medicines in a model of chronic obstructive pulmonary disease induced by cigarette smoke. Biomed Pharmacother 2018; 99:591-597. [DOI: 10.1016/j.biopha.2018.01.106] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 01/18/2018] [Accepted: 01/24/2018] [Indexed: 12/20/2022] Open
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21
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Wang G, Mohammadtursun N, Sun J, Lv Y, Jin H, Lin J, Kong L, Zhao Z, Zhang H, Dong J. Establishment and Evaluation of a Rat Model of Sidestream Cigarette Smoke-Induced Chronic Obstructive Pulmonary Disease. Front Physiol 2018; 9:58. [PMID: 29467669 PMCID: PMC5808212 DOI: 10.3389/fphys.2018.00058] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 01/17/2018] [Indexed: 01/09/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a common cause of mortality worldwide. The current lack of an animal model that can be established within a certain time frame and imitate the unique features of the disease is a major limiting factor in its study. The present study established and evaluated an animal model of COPD that represents the early and advanced stage features using short-, middle-, and long-term sidestream cigarette smoke (CS) exposure. One hundred and nine Sprague-Dawley rats were randomly divided into 10 groups for different periods of sidestream CS exposure or no exposure (i.e., normal groups). The rats were exposed to CS from 3R4F cigarettes in an exposure chamber. Histological analysis was performed to determine pathological changes. We also conducted open-field tests, lung function evaluations, and cytokine analysis of the blood serum, bronchoalveolar lavage fluid, and lung tissue. The lung tissue protein levels, blood gases, and were also analyzed. As the CS exposure time increased, the indicators associated with oxidative stress, inflammatory responses, and airway remodeling were greater in the CS exposure groups than in the normal group. At 24 and 36 weeks, the COPD model rats displayed the middle- and advanced-stage features of COPD, respectively. In the 8-week CS exposure group, after the CS exposure was stopped for 4 weeks, inflammatory responses and oxidative responses were ameliorated and lung function exacerbation was reduced compared with the 12-week CS exposure group. Therefore, we established a more adequate rat model of sidestream CS induced COPD, which will have great significance for a better understanding of the pathogenesis of COPD and drug effectiveness evaluation.
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Affiliation(s)
- Genfa Wang
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,The Institutes of Integrative Medicine, Fudan University, Shanghai, China.,Department of TCM, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Nabijan Mohammadtursun
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,The Institutes of Integrative Medicine, Fudan University, Shanghai, China.,College of Xinjiang Uyghur Medicine, Hotan, China
| | - Jing Sun
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,The Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Yubao Lv
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,The Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Hualiang Jin
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,The Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Jinpei Lin
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,The Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Lingwen Kong
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,The Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Zhengxiao Zhao
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,The Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Hongying Zhang
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,The Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Jingcheng Dong
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,The Institutes of Integrative Medicine, Fudan University, Shanghai, China
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22
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Matos VSB, Gomes FDS, Oliveira TM, Schulz RDS, Ribeiro LCV, Gonzales ADF, Lima JM, Guerreiro MLDS. Effects of emissions from sugar cane burning on the trachea and lungs of Wistar rats. J Bras Pneumol 2017; 43:208-214. [PMID: 28746532 PMCID: PMC5687952 DOI: 10.1590/s1806-37562016000000144] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 01/05/2017] [Indexed: 12/17/2022] Open
Abstract
Objective: To evaluate the effects of exposure to emissions from sugar cane burning on inflammatory mechanisms in tissues of the trachea and lung parenchyma in Wistar rats after different periods of exposure. Methods: This was an experimental open randomized study. The animals were divided into four groups: a control group (CG) underwent standard laboratory conditions, and three experimental groups were exposed to emissions from sugar cane burning over different periods of time, in days-1 (EG1), 7 (EG7), and 21 (EG21). After euthanasia with 200 mg/kg of ketamine/xylazine, fragments of trachea and lung were collected and fixed in 10% formalin. Histological analyses were performed with H&E and picrosirius red staining. Results: No inflammatory infiltrates were found in the tissues of CG rats. The histological examination of tissues of the trachea and lung parenchyma revealed that the inflammatory process was significantly more intense in EG7 than in the CG (p < 0.05 and p < 0.01, respectively). In comparison with the CG and EG1, angiogenesis in the lung parenchyma and collagen deposition in tracheal tissues were significantly greater only in EG21 (p < 0.001 and p < 0.01, respectively). Conclusions: In this sample, emissions from sugar cane burning induced acute focal and diffuse inflammation in the lamina propria of tracheal tissues, with no loss of ciliated epithelial tissue. In the lung parenchyma of the animals in the experimental groups, there was interstitial and alveolar edema, together with polymorphonuclear cell infiltrates.
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Affiliation(s)
| | | | | | | | | | - Astria Dias Ferrão Gonzales
- . Universidade do Estado da Bahia - UNEB - Salvador (BA) Brasil.,. Programa de Mestrado Profissional em Bioenergia, Faculdade de Tecnologia e Ciências da Bahia, Salvador (BA) Brasil
| | - Januário Mourão Lima
- . Programa de Mestrado Profissional em Bioenergia, Faculdade de Tecnologia e Ciências da Bahia, Salvador (BA) Brasil
| | - Marcos Lázaro da Silva Guerreiro
- . Universidade do Estado da Bahia - UNEB - Salvador (BA) Brasil.,. Programa de Mestrado Profissional em Bioenergia, Faculdade de Tecnologia e Ciências da Bahia, Salvador (BA) Brasil
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Zhang J, Wang J, Wang X, Liu Z, Ren J, Sun T. Early surgery increases mitochondrial DNA release and lung injury in a model of elderly hip fracture and chronic obstructive pulmonary disease. Exp Ther Med 2017; 14:4541-4546. [PMID: 29067126 DOI: 10.3892/etm.2017.5044] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 07/11/2017] [Indexed: 12/16/2022] Open
Abstract
Hip fractures are one of the most common injuries in elderly individuals and are associated with a high incidence of complications and mortality. Clinical guidelines recommend early reparative surgery within 24-48 h from hospital admission; however, it is currently unknown whether this principle of early surgery is applicable for patients with hip fracture and chronic obstructive pulmonary disease (COPD). To investigate the systemic inflammatory response and lung injury as a result early surgery in elderly patients with hip fracture and COPD, a COPD model was created, by daily exposure to cigarette smoke, and evaluated. Rats (5 months of age) were exposed to cigarette smoking for 37 weeks to create a COPD group. Rats not exposed to cigarette smoke formed the control group. All rats experienced hip fracture, which was subsequently treated with surgery at 24 h (early fixation; EF) or 72 h (late fixation; LF) after fracture, respectively. Serum mitochondrial DNA (mtDNA), tumor necrosis factor-α (TNF-α), interleukin (IL)-6 and IL-10 were measured at 2 and 24 h after surgery. Cytokine and myeloperoxidase (MPO) activity in the lung tissue were measured and assessed via bronchoalveolar lavage. The serum mtDNA, IL-6 and IL-10 levels in the control group and in the COPD group increased rapidly at 2 h and peaked at 24 h, while TNF-α levels peaked at 2 h and subsequently decreased. Rats that received EF in the COPD group demonstrated a significant increase of TNF-α (P<0.001 at 2 h), IL-6 (P<0.001 at 2 and 24 h), IL-10 (P=0.010 at 2 h and P=0.001 at 24 h) and mtDNA (P<0.001 at 24 h) compared with the rats that received LF. LF in experimental rats also significantly reduced the severity of MPO activity (P<0.001 and P=0.001) and permeability (P=0.009 and P=0.018) in pulmonary samples at 2 or 24 h, respectively, compared with EF. However, LF in the control group did not demonstrate a significant advantage at reducing MPO and permeability in serum and pulmonary samples. The present study indicated that early surgery increased mtDNA and cytokine release in a model of elderly hip fracture with COPD, and LF may reduce the severity of the inflammatory response and degree of permeability in pulmonary tissues.
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Affiliation(s)
- Jianzheng Zhang
- Department of Orthopedic Surgery, Beijing Army General Hospital, Beijing 100700, P.R. China
| | - Juan Wang
- Department of Orthopedic Surgery, Beijing Army General Hospital, Beijing 100700, P.R. China
| | - Xiaowei Wang
- Department of Orthopedic Surgery, Beijing Army General Hospital, Beijing 100700, P.R. China
| | - Zhi Liu
- Department of Orthopedic Surgery, Beijing Army General Hospital, Beijing 100700, P.R. China
| | - Jixin Ren
- Department of Orthopedic Surgery, Beijing Army General Hospital, Beijing 100700, P.R. China
| | - Tiansheng Sun
- Department of Orthopedic Surgery, Beijing Army General Hospital, Beijing 100700, P.R. China
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24
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Zakharchuk NV, Chertok VM, Nevzorova VA, Gonchar EY. Effects of Chronic Tobacco Smoking on the Distribution of Tachykinin Receptors in Rat Pial Arteries. Bull Exp Biol Med 2017; 163:313-316. [PMID: 28744630 DOI: 10.1007/s10517-017-3792-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Indexed: 11/30/2022]
Abstract
Pial arteries of different diameter were studied in intact rats and after 6-month modeling of chronic tobacco smoking in rats. Expression of tachykinin NK1 receptors in pial arteries was studied by biomicroscopy and immunohistochemical methods. Chronic tobacco smoking induced considerable reorganizations of the arterial bed. The intensity of changes depended on the diameter of vessels. In small pial vessels that directly participate in the blood supply to the brain, pronounced vasodilatation and enhanced expression of NK1 receptors in the endothelium mediating the effects of substance P were observed; the number of these vessels also increased. The intensity of the response to tobacco smoke components decreased with increasing vessel diameter.
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Affiliation(s)
- N V Zakharchuk
- Department of Hospital Therapy and Instrumental Diagnostics, Pacific State Medical University, Ministry of Health of the Russian Federation, Vladivostok, Russia.
| | - V M Chertok
- Department of Human Anatomy, Vladivostok, Russia
| | - V A Nevzorova
- Department of Hospital Therapy and Instrumental Diagnostics, Pacific State Medical University, Ministry of Health of the Russian Federation, Vladivostok, Russia
| | - E Yu Gonchar
- Department of Hospital Therapy and Instrumental Diagnostics, Pacific State Medical University, Ministry of Health of the Russian Federation, Vladivostok, Russia
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25
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Ghorani V, Boskabady MH, Khazdair MR, Kianmeher M. Experimental animal models for COPD: a methodological review. Tob Induc Dis 2017; 15:25. [PMID: 28469539 PMCID: PMC5414171 DOI: 10.1186/s12971-017-0130-2] [Citation(s) in RCA: 129] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Accepted: 04/19/2017] [Indexed: 02/06/2023] Open
Abstract
INTRODUCTION Chronic obstructive pulmonary disease (COPD) is a progressive disorder that makes the breathing difficult and is characterized by pathological conditions ranging from chronic inflammation to tissue proteolysis. With regard to ethical issues related to the studies on patients with COPD, the use of animal models of COPD is inevitable. Animal models improve our knowledge about the basic mechanisms underlying COPD physiology, pathophysiology and treatment. Although these models are only able to mimic some of the features of the disease, they are valuable for further investigation of mechanisms involved in human COPD. METHODS We searched the literature available in Google Scholar, PubMed and ScienceDirect databases for English articles published until November 2015. For this purpose, we used 5 keywords for COPD, 3 for animal models, 4 for exposure methods, 3 for pathophysiological changes and 3 for biomarkers. One hundred and fifty-one studies were considered eligible for inclusion in this review. RESULTS According to the reviewed articles, animal models of COPD are mainly induced in mice, guinea pigs and rats. In most of the studies, this model was induced by exposure to cigarette smoke (CS), intra-tracheal lipopolysaccharide (LPS) and intranasal elastase. There were variations in time course and dose of inducers used in different studies. The main measured parameters were lung pathological data and lung inflammation (both inflammatory cells and inflammatory mediators) in most of the studies and tracheal responsiveness (TR) in only few studies. CONCLUSION The present review provides various methods used for induction of animal models of COPD, different animals used (mainly mice, guinea pigs and rats) and measured parameters. The information provided in this review is valuable for choosing appropriate animal, method of induction and selecting parameters to be measured in studies concerning COPD.
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Affiliation(s)
- Vahideh Ghorani
- Pharmaceutical Research Centre and Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Hossein Boskabady
- Neurogenic Inflammation Research Centre and Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, 9177948564 Iran
| | - Mohammad Reza Khazdair
- Pharmaceutical Research Centre and Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Majid Kianmeher
- Neurogenic Inflammation Research Centre and Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, 9177948564 Iran
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26
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Neutrophilic Inflammation in the Immune Responses of Chronic Obstructive Pulmonary Disease: Lessons from Animal Models. J Immunol Res 2017; 2017:7915975. [PMID: 28536707 PMCID: PMC5426078 DOI: 10.1155/2017/7915975] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 04/05/2017] [Indexed: 12/20/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a major cause of mortality worldwide, which is characterized by chronic bronchitis, destruction of small airways, and enlargement/disorganization of alveoli. It is generally accepted that the neutrophilic airway inflammation observed in the lungs of COPD patients is intrinsically linked to the tissue destruction and alveolar airspace enlargement, leading to disease progression. Animal models play an important role in studying the underlying mechanisms of COPD as they address questions involving integrated whole body responses. This review aims to summarize the current animal models of COPD, focusing on their advantages and disadvantages on immune responses and neutrophilic inflammation. Also, we propose a potential new animal model of COPD, which may mimic the most characteristics of human COPD pathogenesis, including persistent moderate-to-high levels of neutrophilic inflammation.
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27
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Zhao YL, Cao J, Shang JH, Liu YP, Khan A, Wang HS, Qian Y, Liu L, Ye M, Luo XD. Airways antiallergic effect and pharmacokinetics of alkaloids from Alstonia scholaris. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2017; 27:63-72. [PMID: 28314480 DOI: 10.1016/j.phymed.2017.02.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 01/24/2017] [Accepted: 02/12/2017] [Indexed: 06/06/2023]
Abstract
BACKGROUND Alstonia scholaris (L.) R. Br. (Apocynaceae), an important herbal medicine, has been widely used to treat respiratory tract diseases, such as cough, asthma, phlegm, and chronic obstructive pulmonary disease. PURPOSE To evaluate pharmacological effect of alkaloids from A. scholaris on ovalbumin induced airways allergic inflammatory model, and explore whether the dosing frequency is related to pharmacokinetics. STUDY DESIGN After oral administration of total alkaloids, the pharmacokinetic study of it was investigated. In addition, anti-allergic studies were carried out on ovalbumin-sensitized airways allergic inflammatory model of mice. METHODS The pharmacokinetics of total alkaloids (TA) was investigated in SD rat plasma by a fully-validated LC-MS/MS method. Then, an ovalbumin (OVA)-sensitized airways allergic inflammatory model was established, in which mice were intra-gastrically administrated by 3 times a day (8.3 and 16.7mg/kg) based on the pharmacokinetic behavior of TA) and single (25, 50mg/kg) treatment regimen. Dexamethasone was used as a positive control for corticosteroid drugs. Cellular infiltration was assessed in the broncho-alveolar lavage fluid (BALF). Expressions of interleukin-4 (IL-4) and interleukin-10 (IL-10) in the BALF were determined, levels of immunoglobulin E (IgE) and eotaxin in serum were measured, and superoxide dismutase (SOD) activities as well as malondialdehyde (MDA) content in the serum and BALF were examined. Finally, histopathological examination in the lung was assessed by H. E. staining. RESULTS The time course of plasma concentration of 4 bioactive indole alkaloids fitted an open two-compartment model after oral administration of total alkaloids at doses of 10, 25, and 50mg/kg. The area under the curve and the maximum concentration values of four major alkaloids increased dose-dependently, and half-life suggested a short-lasting pharmacological effect. Then, an ovalbumin-provoked airways allergic inflammatory model indicated that the pharmacological effect of administration of total alkaloids 3 times a day was a little better than that of single dose daily. The percentage of eosinophils in BALF was reduced obviously and the pathological damage of lung was also attenuated. There was also a significant reduction in IL-4 and promotion in IL-10 in the BALF. Serum IgE and eotaxin expression also significantly decreased in treated animals. Furthermore, the activity of SOD elevated remarkably and lipid peroxidation product (MDA) decreased in the administrated mice. CONCLUSION The pharmacological effects administrated for 3 times a day had precedence over single dose daily, which was related to the prolonged retention time and the maintained plasma concentration. Moreover, scholaricine and vallesamine might be responsible for the treatment of allergic asthma, mainly in total alkaloids.
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Affiliation(s)
- Yun-Li Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Jing Cao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
| | - Jian-Hua Shang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Ya-Ping Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Afsar Khan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China; Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad, 22060, Pakistan
| | - Heng-Shan Wang
- Guangxi Normal University, Guangxi Province, Guilin, 541004, China
| | - Yi Qian
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China
| | - Lu Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Min Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China.
| | - Xiao-Dong Luo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
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Zhou X, Gu D, Hou G. Erythromycin attenuates metalloprotease/anti-metalloprotease imbalance in cigarette smoke-induced emphysema in rats via the mitogen-activated protein kinase/nuclear factor-κB activation pathway. Mol Med Rep 2017; 15:2983-2990. [PMID: 28358431 PMCID: PMC5428383 DOI: 10.3892/mmr.2017.6416] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 01/31/2017] [Indexed: 01/16/2023] Open
Abstract
The present study investigated whether erythromycin (ERY) reduces cigarette smoke (CS)-induced emphysema in rats and aimed to determine the anti-inflammatory effect of ERY, which may identify potential treatments for chronic obstructive pulmonary disease. Furthermore, the current study focused on the potential effects on the imbalance between matrix metalloprotease (MMP) and anti-MMP activity, the phosphorylation of mitogen-activated protein kinases (MAPKs) and the nuclear factor‑κB (NF‑κB) signaling pathway. Wistar rats were divided into the following three groups (n=12 each): control (ERY vehicle only, without any CS exposure), CS (animals were exposed to CS for 12 weeks) and CS + ERY (animals were exposed to CS for 12 weeks and received 100 mg/kg/day ERY). The recruitment of inflammatory cells into the bronchoalveolar lavage fluid (BALF) and the histopathology of lung tissue from all groups was evaluated to grade the severity of the emphysema. The expression of MMP‑2, MMP‑9 and tissue inhibitor of metalloproteinase‑1 was evaluated by immunohistochemistry and western blotting. The activation of MAPKs, NF‑κB and inhibitor of NF‑κB (IκBα), in lung tissues was examined by western blotting. Treatment with ERY resulted in fewer inflammatory cells and cytokines in the BALF, and fewer emphysema‑associated changes in the lungs compared with control. The stimulus of CS promoted the phosphorylation of extracellular signal‑regulated kinase (ERK)1/2 and p38, but not c‑Jun NH2‑terminal kinase, thereby inducing the activation of the ERK/MAPK signaling pathway in rats. Furthermore, CS exposure increased the expression of NF-κB and decreased the expression of IκBα. The levels of phosphorylated ERK1/2 and p38 were significantly reduced in rats with CS‑induced emphysema when treated with ERY compared with the CS group. The results of the present study therefore indicate that oral administration of ERY may suppress CS‑induced emphysema by regulating inflammatory cytokines and the MMP/anti-MMP imbalance via the MAPK/NF-κB pathway.
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Affiliation(s)
- Xiaoming Zhou
- Department of Respiratory Medicine, The Shengjing Hospital, China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Dongxue Gu
- Department of Respiratory Medicine, People's Hospital of Liaoning Province, Shenyang, Liaoning 110016, P.R. China
| | - Gang Hou
- The Institute of Respiratory Diseases, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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Craig JM, Scott AL, Mitzner W. Immune-mediated inflammation in the pathogenesis of emphysema: insights from mouse models. Cell Tissue Res 2017; 367:591-605. [PMID: 28164246 PMCID: PMC5366983 DOI: 10.1007/s00441-016-2567-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 12/21/2016] [Indexed: 12/31/2022]
Abstract
The cellular mechanisms that result in the initiation and progression of emphysema are clearly complex. A growing body of human data combined with discoveries from mouse models utilizing cigarette smoke exposure or protease administration have improved our understanding of emphysema development by implicating specific cell types that may be important for the pathophysiology of chronic obstructive pulmonary disease. The most important aspects of emphysematous damage appear to be oxidative or protease stress and sustained macrophage activation and infiltration of other immune cells leading to epithelial damage and cell death. Despite the identification of these associated processes and cell types in many experimental studies, the reasons why cigarette smoke and other pollutants result in unremitting damage instead of injury resolution are still uncertain. We propose an important role for macrophages in the sequence of events that lead and maintain this chronic tissue pathologic process in emphysema. This model involves chronic activation of macrophage subtypes that precludes proper healing of the lung. Further elucidation of the cross-talk between epithelial cells that release damage-associated signals and the cellular immune effectors that respond to these cues is a critical step in the development of novel therapeutics that can restore proper lung structure and function to those afflicted with emphysema.
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Affiliation(s)
- John M Craig
- Department of Environmental Health and Engineering, Bloomberg School of Public Health, Johns Hopkins University, 615 North Wolfe St., Baltimore, MD, USA
| | - Alan L Scott
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - Wayne Mitzner
- Department of Environmental Health and Engineering, Bloomberg School of Public Health, Johns Hopkins University, 615 North Wolfe St., Baltimore, MD, USA.
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30
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Zhang HT, Zhang T, Chai M, Sun JJ, Yu XY, Liu CZ, Huang CC. Effect of tobacco smoke on hydrogen sulfide-induced rat thoracic aorta relaxation. ACTA ACUST UNITED AC 2017; 50:e5592. [PMID: 28177058 PMCID: PMC5390530 DOI: 10.1590/1414-431x20165592] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 10/19/2016] [Indexed: 11/30/2022]
Abstract
Levels of hydrogen sulfide (H2S), a gaseous signaling molecule, are reduced in the serum of individuals who smoke. We hypothesized that tobacco smoke influenced smooth muscle relaxation by decreasing H2S levels and this effect could also influence expression of cystathionine γ-lyase (CSE) and sulfonylurea receptor-2 (SUR-2). The aim of this study was to explore the effect of tobacco smoke on H2S-mediated rat thoracic aorta relaxation and its possible mechanism. Thirty-two Sprague-Dawley rats were divided into four groups: control (C) group, short-term smoker (SS) group, mid-term smoker (MS) group, and long-term smoker (LS) group. H2S concentrations in serum, action of H2S on rat aortic vascular relaxation, and expression of CSE and SUR-2 in thoracic aortic smooth muscle were measured. Although there was no significant difference in H2S between the C and the SS groups, concentration of H2S was significantly reduced in both the LS and MS groups compared to control (P<0.01). Furthermore, H2S was significantly lower in the LS than in the MS group (P<0.05). Rat aortic vascular relaxation was lower in all three treatment groups compared to the control, with the most significant decrease observed in the LS group (P<0.05 compared to the MS group). Expression of CSE and SUR-2 was reduced in the LS and MS groups compared to control (P<0.05), with the lowest levels observed in the LS group (P<0.05). Therefore, tobacco smoke reduced expression of CSE and SUR-2 in rat thoracic aorta, which may inhibit H2S production and vascular dilation.
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Affiliation(s)
- H T Zhang
- Department of Cardiology, Air Force General Hospital of the Chinese People's Liberation Army, Beijing, China
| | - T Zhang
- Department of Cardiology, The First People's Hospital of Chuzhou, Chuzhou, China
| | - M Chai
- Department of Cardiology, Lung and Blood Vessel Disease, Ministry of Education, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Beijing, China
| | - J J Sun
- Department of Cardiology, Air Force General Hospital of the Chinese People's Liberation Army, Beijing, China
| | - X Y Yu
- Department of Cardiology, Air Force General Hospital of the Chinese People's Liberation Army, Beijing, China
| | - C Z Liu
- Department of Cardiology, Air Force General Hospital of the Chinese People's Liberation Army, Beijing, China
| | - C C Huang
- Department of Cardiology, Air Force General Hospital of the Chinese People's Liberation Army, Beijing, China
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Paeoniflorin Attenuated Oxidative Stress in Rat COPD Model Induced by Cigarette Smoke. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 2016:1698379. [PMID: 28003846 PMCID: PMC5149678 DOI: 10.1155/2016/1698379] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 08/09/2016] [Accepted: 08/23/2016] [Indexed: 11/30/2022]
Abstract
Paeoniflorin (PF), a monoterpene glucoside, might have an effect on the oxidative stress. However, the mechanism is still unknown. In this study, we made the COPD model in Sprague-Dawley (SD) rats by exposing them to the smoke of 20 cigarettes for 1 hour/day and 6 days/week, for 12 weeks, 24 weeks, or 36 weeks. Our findings suggested that smoke inhalation can trigger the oxidative stress from the very beginning. A 24-week treatment of PF especially in the dosage of 40 mg/kg·d can attenuate oxygen stress by partially quenching reactive oxygen species (ROS) and upregulating antioxidant enzymes via an Nrf2-dependent mechanism.
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Agarwalla H, Mahajan PS, Sahu D, Taye N, Ganguly B, Mhaske SB, Chattopadhyay S, Das A. A Switch-On NIR Probe for Specific Detection of Hg2+ Ion in Aqueous Medium and in Mitochondria. Inorg Chem 2016; 55:12052-12060. [DOI: 10.1021/acs.inorgchem.6b02233] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hridesh Agarwalla
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Pankaj S. Mahajan
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Debashis Sahu
- Computation
and Simulation Unit (Analytical Discipline and Centralized Instrument
Facility), CSIR−Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
| | - Nandaraj Taye
- Chromatin and Disease Biology Lab, National Centre for Cell Science; Pune 411007, India
| | - Bishwajit Ganguly
- Computation
and Simulation Unit (Analytical Discipline and Centralized Instrument
Facility), CSIR−Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
| | - Santosh B. Mhaske
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Samit Chattopadhyay
- Chromatin and Disease Biology Lab, National Centre for Cell Science; Pune 411007, India
| | - Amitava Das
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
- CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar 364002, Gujarat, India
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Ge Z, Li B, Zhou X, Yang Y, Zhang J. Basic fibroblast growth factor activates β-catenin/RhoA signaling in pulmonary fibroblasts with chronic obstructive pulmonary disease in rats. Mol Cell Biochem 2016; 423:165-174. [DOI: 10.1007/s11010-016-2834-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 09/23/2016] [Indexed: 12/23/2022]
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Jones B, Donovan C, Liu G, Gomez HM, Chimankar V, Harrison CL, Wiegman CH, Adcock IM, Knight DA, Hirota JA, Hansbro PM. Animal models of COPD: What do they tell us? Respirology 2016; 22:21-32. [DOI: 10.1111/resp.12908] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 08/01/2016] [Accepted: 08/02/2016] [Indexed: 01/28/2023]
Affiliation(s)
- Bernadette Jones
- Priority Research Centre for Healthy Lungs; Hunter Medical Research Institute, The University of Newcastle, Newcastle, New South Wales, Australia; London UK
| | - Chantal Donovan
- Priority Research Centre for Healthy Lungs; Hunter Medical Research Institute, The University of Newcastle, Newcastle, New South Wales, Australia; London UK
| | - Gang Liu
- Priority Research Centre for Healthy Lungs; Hunter Medical Research Institute, The University of Newcastle, Newcastle, New South Wales, Australia; London UK
| | - Henry M. Gomez
- Priority Research Centre for Healthy Lungs; Hunter Medical Research Institute, The University of Newcastle, Newcastle, New South Wales, Australia; London UK
| | - Vrushali Chimankar
- Priority Research Centre for Healthy Lungs; Hunter Medical Research Institute, The University of Newcastle, Newcastle, New South Wales, Australia; London UK
| | - Celeste L. Harrison
- Priority Research Centre for Healthy Lungs; Hunter Medical Research Institute, The University of Newcastle, Newcastle, New South Wales, Australia; London UK
| | - Cornelis H. Wiegman
- The Airways Disease Section, National Heart and Lung Institute; Imperial College London; London UK
| | - Ian M. Adcock
- The Airways Disease Section, National Heart and Lung Institute; Imperial College London; London UK
| | - Darryl A. Knight
- Priority Research Centre for Healthy Lungs; Hunter Medical Research Institute, The University of Newcastle, Newcastle, New South Wales, Australia; London UK
| | - Jeremy A. Hirota
- James Hogg Research Centre; University of British Columbia; Vancouver British Columbia Canada
| | - Philip M. Hansbro
- Priority Research Centre for Healthy Lungs; Hunter Medical Research Institute, The University of Newcastle, Newcastle, New South Wales, Australia; London UK
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The Isosteroid Alkaloid Imperialine from Bulbs of Fritillaria cirrhosa Mitigates Pulmonary Functional and Structural Impairment and Suppresses Inflammatory Response in a COPD-Like Rat Model. Mediators Inflamm 2016; 2016:4192483. [PMID: 27524867 PMCID: PMC4971319 DOI: 10.1155/2016/4192483] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Accepted: 06/20/2016] [Indexed: 11/17/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is the third leading cause of death in the world. Present therapies for COPD have limited effect on reducing the progression of COPD and suppressing the inflammatory response in the lung. Bulbs of Fritillaria cirrhosa D. Don (BFC) have been used in many Asian countries for a long time to treat pulmonary diseases, such as cough, expectoration, and asthma. Steroidal alkaloids are the major biological active constituents in BFC, whereby imperialine is one of the important steroidal alkaloids. So far, there are no studies reporting the effect of imperialine on COPD. In this study, we investigated the effect of imperialine on pulmonary function and structure and inflammation in a COPD-like rat model which was induced by the combination of exposure to CS and intratracheal administration of LPS. Our data show that imperialine mitigates pulmonary functional and structural impairment and suppressed inflammatory response in a COPD-like rat model by mediating expression of related cytokines in lung tissues of the COPD-like rats, such as IL-1β, IL-6, IL-8, TNF-α, NF-κB, TGF-β1, MMP-9, and TIMP-1.
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Xin X, Dai W, Wu J, Fang L, Zhao M, Zhang P, Chen M. Mechanism of intestinal mucosal barrier dysfunction in a rat model of chronic obstructive pulmonary disease: An observational study. Exp Ther Med 2016; 12:1331-1336. [PMID: 27588054 PMCID: PMC4997986 DOI: 10.3892/etm.2016.3493] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 06/02/2016] [Indexed: 02/07/2023] Open
Abstract
The aim of the present study was to investigate intestinal mucosal barrier dysfunction in a rat model of chronic obstructive pulmonary disease (COPD). Male Sprague Dawley rats (n=40) were evenly randomized into control and COPD groups and the COPD model was established by regulated exposure to cigarette smoke for 6 months. Histopathological changes of the lung and intestinal tissues were detected by hematoxylin and eosin staining. Expression of the tight junction proteins occludin and zona occludens-1 (ZO-1) in the intestinal tissues were analyzed by western blotting, serum diamine oxidase (DAO) activity was detected by spectrophotometry, the urinary lactulose to mannitol ratio (L/M) was evaluated by high performance liquid chromatography, and intestinal tissue secretion of tumor necrosis factor (TNF)-α, interferon (IFN)-γ and interleukin (IL)-8 were detected by ELISA. Lung histopathology revealed thinned alveolar walls, ruptured alveolar septa, enlarged and deformed alveoli, and the formation of bullae and emphysema due to alveolar fusion in the COPD group, while intestinal histopathology indicated clearly swollen intestines with darkened and gray mucosa, neutrophil infiltration of the intestinal mucosal and regional epithelial shedding. The occludin and ZO-1 expression levels were significantly lower in the COPD group compared with those in the corresponding control group (P<0.05), while the urinary L/M ratio was significantly higher (P<0.05). Furthermore, the serum DAO activity and secretion of TNF-α, IFN-γ and IL-8 in the intestinal tissues were significantly higher in the COPD group than in the control group (each P<0.05). Dysfunctional and structural changes were observed in the intestinal mucosal barrier in COPD model rats, which may be associated with the increased intestinal inflammatory responses.
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Affiliation(s)
- Xiaofeng Xin
- Department of Respiratory Medicine, Nanjing Jingling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Wei Dai
- Department of Respiratory Medicine, Nanjing Jingling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Jie Wu
- Department of Respiratory Medicine, Nanjing Jingling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Liping Fang
- Department of Respiratory Medicine, Nanjing Jingling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Ming Zhao
- Department of Respiratory Medicine, Nanjing Jingling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Pengpeng Zhang
- Department of Respiratory Medicine, Nanjing Jingling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Min Chen
- Department of Respiratory Medicine, Nanjing Jingling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
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Zhao YL, Shang JH, Pu SB, Wang HS, Wang B, Liu L, Liu YP, Shen HM, Luo XD. Effect of total alkaloids from Alstonia scholaris on airway inflammation in rats. JOURNAL OF ETHNOPHARMACOLOGY 2016; 178:258-265. [PMID: 26707569 DOI: 10.1016/j.jep.2015.12.022] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 12/11/2015] [Accepted: 12/17/2015] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Alstonia scholaris (Apocynaceae) have been traditionally used for treatment of respiratory diseases in "dai" ethnopharmacy for hundreds years, especially for cough, asthma, phlegm, chronic obstructive pulmonary disease and so on. The formulas including the leaf extract have also been prescribed in hospitals and sold over the retail pharmacies. AIM OF THE STUDY A. scholaris is used as a traditional herbal medicine for the treatment of respiratory tract inflammation. However, there is no scientific evidence to validate the use of total alkaloids of A. scholaris in the literature. Here, we investigated the protective activity of total alkaloids (TA), extracted from the leaves of Alstonia scholaris, against lipopolysaccharide (LPS)-induced airway inflammation (AI) in rats. MATERIALS AND METHODS 200 μg/μL LPS was instilled intratracheally in each rat, and then the modeling animals were divided into six groups (n=10, each) randomly: sham group, LPS group, Dexamethasone [1.5mg/kg, intra-gastricly (i.g.)] group, and three different doses (7.5, 15, and 30 mg/kg, i.g.) of total alkaloids-treated groups. Corresponding drugs or vehicles were orally administered once per day for 7 days consecutively. The concentration of albumin (ALB), alkaline phosphatase (AKP), lactate dehydrogenase (LDH), and the number of inflammatory cells in bronchoalveolar lavage fluid (BALF) were determined by fully automatic biochemical analyzer and blood counting instrument. Nitric oxide (NO) level, malondialdehyde (MDA) content, and superoxide dismutase (SOD) activities were examined by multiskan spectrum, and histological change in the lungs was analyzed by H.E. staining. The levels of inflammatory cytokine tumor necrosis factor-α (TNF-α) and interleukin-8 (IL-8) were measured using ELISA. RESULTS Total alkaloids decreased the percentage of neutrophil, number of WBC, levels of ALB, AKP and LDH in the BALF, while increased the content of ALB in serum. It also improved SOD activity and increased NO level in the lungs, serum and BALF, and reduced the concentration of MDA in the lungs. Total alkaloids also inhibited the production of inflammatory cytokines TNF-α and IL-8 in the BALF and lung. Finally, histopathological examination indicated that total alkaloids attenuated tissue injury of the lungs in LPS-induced AI. CONCLUSIONS Total alkaloids have an inhibitory effect against LPS-induced airway inflammation in rats.
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Affiliation(s)
- Yun-Li Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, China
| | - Jian-Hua Shang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, China
| | - Shi-Biao Pu
- Yunnan University of TCM, Yunnan Province, Kunming 650500, China
| | - Heng-Shan Wang
- Guangxi Normal University, Guangxi Province, Guilin 541004, China
| | - Bei Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, China
| | - Lu Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, China
| | - Ya-Ping Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, China
| | - Hong-Mei Shen
- The Third Affiliated Hospital of Kunming Medical University, Yunnan Province, Kunming 650106, China.
| | - Xiao-Dong Luo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, China.
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Inhibitory effects of Cnidium monnieri fruit extract on pulmonary inflammation in mice induced by cigarette smoke condensate and lipopolysaccharide. Chin J Nat Med 2015; 12:641-7. [PMID: 25263974 DOI: 10.1016/s1875-5364(14)60098-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Indexed: 01/13/2023]
Abstract
The aim of this study was to investigate the inhibitory effect of Cnidium monnieri fruit (CM) extracts on pulmonary inflammation induced in mice by cigarette smoke condensate (CSC) and lipopolysaccharide (LPS). Pulmonary inflammation was induced by intratracheal instillation of LPS and CSC five times within 12 days. CM extract was administered orally at a dose of 50 or 200 mg·kg(-1). The number of inflammatory cells in the bronchoalveolar lavage fluid was counted using a fluorescence activated cell sorter. Inflammatory mediator levels were determined by enzyme-linked immunosorbent assay. The administration of LPS and CSC exacerbated airway hyper-responsiveness (AHR) and induced an accumulation of inflammatory cells and mediators, and led to histological changes. However, these responses are modulated by treatment with CM, and the treatment with CM extract produces similar or more extensive results than the treatment with cyclosporin A (CSA). CM extract may have an inhibitory effect on pulmonary inflammation related with chronic obstructive pulmonary disease.
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Gu C, Li Y, Xu WL, Yan JP, Xia YJ, Ma YY, Chen C, Wang HJ, Tao HQ. Sirtuin 1 Activator SRT1720 Protects Against Lung Injury via Reduction of Type II Alveolar Epithelial Cells Apoptosis in Emphysema. COPD 2014; 12:444-52. [DOI: 10.3109/15412555.2014.974740] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Kozma RDLH, Alves EM, Barbosa-de-Oliveira VA, Lopes FDTQDS, Guardia RC, Buzo HV, Faria CAD, Yamashita C, Cavazzana Júnior M, Frei F, Ribeiro-Paes MJDO, Ribeiro-Paes JT. A new experimental model of cigarette smoke-induced emphysema in Wistar rats. ACTA ACUST UNITED AC 2014; 40:46-54. [PMID: 24626269 PMCID: PMC4075926 DOI: 10.1590/s1806-37132014000100007] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Accepted: 12/09/2013] [Indexed: 11/22/2022]
Abstract
OBJECTIVE: To describe a new murine model of cigarette smoke-induced emphysema. METHODS: Twenty-four male Wistar rats were divided into two groups: the cigarette smoke
group, comprising 12 rats exposed to smoke from 12 commercial filter cigarettes
three times a day (a total of 36 cigarettes per day) every day for 30 weeks; and
the control group, comprising 12 rats exposed to room air three times a day every
day for 30 weeks. Lung function was assessed by mechanical ventilation, and
emphysema was morphometrically assessed by measurement of the mean linear
intercept (Lm). RESULTS: The mean weight gain was significantly (approximately ten times) lower in the
cigarette smoke group than in the control group. The Lm was 25.0% higher in the
cigarette smoke group. There was a trend toward worsening of lung function
parameters in the cigarette smoke group. CONCLUSIONS: The new murine model of cigarette smoke-induced emphysema and the methodology
employed in the present study are effective and reproducible, representing a
promising and economically viable option for use in studies investigating the
pathophysiology of and therapeutic approaches to COPD.
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Affiliation(s)
- Rodrigo de las Heras Kozma
- University of São Paulo, São Paulo, Brazil, Graduate Student. University of São Paulo, São Paulo, Brazil
| | - Edson Marcelino Alves
- Júlio de Mesquita Filho São Paulo State University, Assis School of Sciences and Languages, Assis, Brazil, Undergraduate Student. Júlio de Mesquita Filho São Paulo State University at Assis School of Sciences and Languages, Assis, Brazil
| | | | | | - Renan Cenize Guardia
- Faculdades Integradas Padre Albino, Catanduva, Brazil, Undergraduate Student. Faculdades Integradas Padre Albino, Catanduva, Brazil
| | - Henrique Vivi Buzo
- Faculdades Integradas Padre Albino, Catanduva, Brazil, Undergraduate Student. Faculdades Integradas Padre Albino, Catanduva, Brazil
| | - Carolina Arruda de Faria
- University of São Paulo, São Paulo, Brazil, Graduate Student. University of São Paulo, São Paulo, Brazil
| | - Camila Yamashita
- Júlio de Mesquita Filho São Paulo State University, Assis School of Sciences and Languages, Assis, Brazil, Undergraduate Student. Júlio de Mesquita Filho São Paulo State University at Assis School of Sciences and Languages, Assis, Brazil
| | - Manzelio Cavazzana Júnior
- Faculdades Integradas Padre Albino, Catanduva, Brazil, Associate Professor. Faculdades Integradas Padre Albino, Catanduva, Brazil
| | - Fernando Frei
- Júlio de Mesquita Filho São Paulo State University, Assis School of Sciences and Languages, Assis, Brazil, Associate Professor. Júlio de Mesquita Filho São Paulo State University at Assis School of Sciences and Languages, Assis, Brazil
| | | | - João Tadeu Ribeiro-Paes
- Júlio de Mesquita Filho São Paulo State University, Assis School of Sciences and Languages, Assis, Brazil, Assistant Professor. Júlio de Mesquita Filho São Paulo State University at Assis School of Sciences and Languages, Assis, Brazil
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Li Y, Gu C, Xu W, Yan J, Xia Y, Ma Y, Chen C, He X, Tao H. Therapeutic effects of amniotic fluid-derived mesenchymal stromal cells on lung injury in rats with emphysema. Respir Res 2014; 15:120. [PMID: 25319435 PMCID: PMC4201761 DOI: 10.1186/s12931-014-0120-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2014] [Accepted: 09/30/2014] [Indexed: 11/15/2022] Open
Abstract
Background In chronic obstructive pulmonary disease (COPD), two major pathological changes that occur are the loss of alveolar structure and airspace enlargement. To treat COPD, it is crucial to repair damaged lung tissue and regenerate the lost alveoli. Type II alveolar epithelial cells (AECII) play a vital role in maintaining lung tissue repair, and amniotic fluid-derived mesenchymal stromal cells (AFMSCs) possess the characteristics of regular mesenchymal stromal cells. However, it remains untested whether transplantation of rat AFMSCs (rAFMSCs) might alleviate lung injury caused by emphysema by increasing the expression of surfactant protein (SP)A and SPC and inhibiting AECII apoptosis. Methods We analyzed the phenotypic characteristics, differentiation potential, and karyotype of rAFMSCs, which were isolated from pregnant Sprague–Dawley rats. Moreover, we examined the lung morphology and the expression levels of SPA and SPC in rats with emphysema after cigarette-smoke exposure and intratracheal lipopolysaccharide instillation and rAFMSC transplantation. The ability of rAFMSCs to differentiate was measured, and the apoptosis of AECII was evaluated. Results In rAFMSCs, the surface antigens CD29, CD44, CD73, CD90, CD105, and CD166 were expressed, but CD14, CD19, CD34, and CD45 were not detected; rAFMSCs also strongly expressed the mRNA of octamer-binding transcription factor 4, and the cells could be induced to differentiate into adipocytes and osteocytes. Furthermore, rAFMSC treatment up-regulated the levels of SPA, SPC, and thyroid transcription factor 1 and inhibited AECII apoptosis, and rAFMSCs appeared to be capable of differentiating into AECII-like cells. Lung injury caused by emphysema was alleviated after rAFMSC treatment. Conclusions rAFMSCs might differentiate into AECII-like cells or induce local regeneration of the lung alveolar epithelium in vivo after transplantation and thus could be used in COPD treatment and lung regenerative therapy.
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Affiliation(s)
- Yaqing Li
- Department of Respiratory Medicine, Zhejiang Provincial People's Hospital, No, 158, Shangtang Road, Hangzhou 310014, Zhejiang, P,R, China.
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Kolahian S, Shahbazfar AA, Tayefi-Nasrabadi H, Keyhanmanesh R, Ansarin K, Ghasemi H, Rashidi AH, Gosens R, Hanifeh M. Tiotropium effects on airway inflammatory events in the cat as an animal model for acute cigarette smoke-induced lung inflammation. Exp Lung Res 2014; 40:272-87. [DOI: 10.3109/01902148.2014.905657] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Marcelino MY, Fuoco NL, de Faria CA, Kozma RDLH, Marques LF, Ribeiro-Paes JT. Animal models in chronic obstructive pulmonary disease-an overview. Exp Lung Res 2014; 40:259-71. [PMID: 24785359 DOI: 10.3109/01902148.2014.908250] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
ABSTRACT Chronic obstructive pulmonary disease (COPD) is characterized by progressive airway obstruction resultant from an augmented inflammatory response of the respiratory tract to noxious particles and gases. Previous reports present a number of different hypotheses about the etiology and pathophysiology of COPD. The generating mechanisms of the disease are subject of much speculation, and a series of questions and controversies among experts still remain. In this context, several experimental models have been proposed in order to broaden the knowledge on the pathophysiological characteristics of the disease, as well as the search for new therapeutic approaches for acute or chronically injured lung tissue. This review aims to present the main experimental models of COPD, more specifically emphysema, as well as to describe the main characteristics, advantages, disadvantages, possibilities of application, and potential contribution of each of these models for the knowledge on the pathophysiological aspects and to test new treatment options for obstructive lung diseases.
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Affiliation(s)
- Monica Yonashiro Marcelino
- 1Program of Post-Graduation in Biotechnology, Universidade de São Paulo-Instituto Butantan, São Paulo, São Paulo, Brazil
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Hao Z, Tiansheng S, Zhi L, Jianzheng Z, Xiaowei W, Jia L. Hip fracture aggravates systemic inflammation and lung injury in aged chronic cigarette smoke exposed rats. J Orthop Res 2014; 32:24-30. [PMID: 24115247 DOI: 10.1002/jor.22491] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Accepted: 08/29/2013] [Indexed: 02/04/2023]
Abstract
The aim of this investigation was to examine the influence of hip fracture on systemic inflammation and lung injury in aged chronic cigarette smoke exposed rats. Male Sprague Dawley (SD) aged rats (22-25 months old, 460-570 g) were used. Animals were subjected to either chronic cigarette smoke (CS) or air exposure for 12 weeks. These animals then underwent a sham procedure or hip fracture. Endpoint was 24 h. Systemic inflammation was assessed by TNF-α, IL-6, and IL-10 levels. Pulmonary function, inflammatory cell counts and protein concentrations in BAL, pulmonary pathological changes and scores were obtained to assess lung injury. And TLR4 mRNA expression in lung tissue was determined. The indices mentioned above were unchanged in air-exposed rats after hip fracture. However, CS-exposed animals were found to have increased serum levels of TNF-α, IL-6, and IL-10, impaired pulmonary function, increased inflammatory cell counts and protein concentrations in BAL, and intensified pathologic changes and scores. In addition, lung tissue harvested following CS-exposure demonstrated increased TLR4 mRNA expression. Our results indicate that systemic inflammation and lung injury in aged CS-exposed animals were further aggravated by hip fracture. The overexpression of TLR4 mRNA induced by CS exposure may, at least in part, involve in this process.
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Affiliation(s)
- Zhang Hao
- Departments of Orthopedics Surgery, Beijing Military General Hospital, Dongcheng District, Nanmencang No. 5, Beijing, 100700, China
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Zakharchuk NV, Nevzorova VA, Gonchar EY, Agafonova IG. Vasomotor activity of the aorta during chronic smoking modeling. Bull Exp Biol Med 2013; 155:302-5. [PMID: 24137588 DOI: 10.1007/s10517-013-2138-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
We studied vasomotor responses of aortic endothelium in a rat model of chronic smoking. It was found that long-term exposure to tobacco smoke (inhalation) impaired vasomotor function of the aortic endothelium leading to insufficient vasodilator activity and enhanced vasoconstriction. After the cessation of inhalations, vasomotor disturbances were not only preserved, but also exacerbated because of increased pathological endothelium-independent vasoconstriction.
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Affiliation(s)
- N V Zakharchuk
- Vladivostok State Medical University; Pacific Institute of Bioorganic Chemistry Far East Division of Russian Academy of Sciences, Vladivostok, Russia.
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46
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Geng WY, Liu ZB, Song NN, Geng WY, Zhang GH, Jin WZ, Li L, Cao YX, Zhu DN, Shen LL. Effects of electroacupuncture at Zusanli (ST36) on inflammatory cytokines in a rat model of smoke-induced chronic obstructive pulmonary disease. JOURNAL OF INTEGRATIVE MEDICINE-JIM 2013; 11:213-9. [PMID: 23743164 DOI: 10.3736/jintegrmed2013024] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Improvement in lung function was reported after acupuncture treatment of chronic obstructive pulmonary disease (COPD), but little is known about the underlying mechanisms. Because an immune response imbalance could be seen in COPD, we hypothesize that electroacupuncture (EA) may play a role in regulating inflammatory cytokines and contribute to lung protection in a rat model of smoke-induced COPD. METHODS A COPD model using male Sprague-Dawley rats exposed to cigarette smoke was established. The rats were randomly divided into four groups (control, sham, COPD, and COPD plus EA), and COPD model was evaluated by measuring pulmonary pathological changes and lung function. EA was applied to the acupuncture point Zusanli (ST36) for 30 min/d for 14 d in sham and COPD rats. Bronchoalveolar lavage fluid (BALF) was used to measure levels of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and malonaldehyde (MDA). RESULTS Compared with the control rats, COPD rats had significant changes in lung resistance (RL) and lung compliance (CL) (both P<0.01), bronchi and bronchiole airway obstruction (P<0.01), and levels of MDA, TNF-α, and IL-1β (P<0.01). There were no significant differences between the control and the sham groups. Compared with the COPD rats, the COPD plus EA rats had decreased RL and increased CL (both P<0.05), and reduced bronchi and bronchiole airway obstruction (P<0.05, P<0.01, respectively), while levels of TNF-α, IL-1β, and MDA in BALF were lowered (P<0.05 and P<0.01, respectively). However, TNF-α and IL-1β levels of the EA group rats remained higher than those of the control group (P<0.05). CONCLUSION EA at ST36 can reduce lung injury in a COPD rat model, and beneficial effects may be related to down-regulation of inflammatory cytokines. The anti-inflammatory and antioxidant effects may prolong the clinical benefit of EA.
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Affiliation(s)
- Wen-ye Geng
- Department of Physiology and Pathophysiology, Shanghai Medical College of Fudan University, Shanghai, China
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Tsuji H, Fujimoto H, Matsuura D, Nishino T, Lee KM, Yoshimura H. Comparison of biological responses in rats under various cigarette smoke exposure conditions. J Toxicol Pathol 2013; 26:159-74. [PMID: 23914058 PMCID: PMC3695338 DOI: 10.1293/tox.26.159] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Accepted: 02/19/2013] [Indexed: 11/19/2022] Open
Abstract
A variety of exposure regimens of cigarette smoke have been used in animal models of lung diseases. In this study, we compared biological responses of smoke exposure in rats, using different smoke concentrations (wet total particulate matter [WTPM]), daily exposure durations, and total days of exposure. As a range-finding acute study, we first compared pulmonary responses between SD and F344 strains after a single nose-only exposure to mainstream cigarette smoke or LPS. Secondly, F344 rats were exposed to cigarette smoke for 2 or 13 weeks under the comparable daily exposure dose (WTPM concentration x daily exposure duration; according to Haber's rule) but at a different WTPM concentration or daily exposure duration. Blood carboxylhemoglobin was increased linearly to the WTPM concentration, while urinary nicotine plus cotinine value was higher for the longer daily exposure than the corresponding shorter exposure groups. Gamma glutamyl transferase activity in bronchoalveolar lavage fluid (BALF) was increased dose dependently after 2 and 13 weeks of cigarette smoke exposure, while the neutrophil content in BALF was not increased notably. Smoke-exposed groups showed reduced body weight gain and increased relative lung and heart weights. While BALF parameters and the relative lung weights suggest pulmonary responses, histopathological examination showed epithelial lesions mainly in the upper respiratory organs (nose and larynx). Collectively, the results indicate that, under the employed study design, the equivalent daily exposure dose (exposure concentration x duration) induces equivalent pulmonary responses in rats.
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Affiliation(s)
- Hiroyuki Tsuji
- Product and Science Division, R&D Group, Japan Tobacco Inc., 6-2 Umegaka, Aoba-ku, Yokohama, Kanagawa 227-8512, Japan
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Eltom S, Stevenson C, Birrell MA. Cigarette smoke exposure as a model of inflammation associated with COPD. CURRENT PROTOCOLS IN PHARMACOLOGY 2013; Chapter 5:Unit5.64. [PMID: 23456614 DOI: 10.1002/0471141755.ph0564s60] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Chronic obstructive pulmonary disease (COPD) is characterized by progressive airflow limitation resulting from inflammation-driven pathologies in the lungs that are a consequence of smoking over many years. Given that the disease is increasing globally, understanding the mechanism by which cigarette smoke (CS) causes lung inflammation and exploiting that knowledge to develop effective treatments is urgently required. Animal models of CS exposure are commonly used to examine the inflammatory processes that may be involved in the development of COPD. The protocols described in this unit detail the development of preclinical models of CS-driven lung inflammation. These systems can be utilized to investigate the role of various biological pathways in CS-mediated inflammation and to assess the efficacy of new therapeutic strategies for treating COPD.
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Affiliation(s)
- Suffwan Eltom
- Respiratory Pharmacology, Airway Disease Section, National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom
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Nie YC, Wu H, Li PB, Luo YL, Zhang CC, Shen JG, Su WW. Characteristic comparison of three rat models induced by cigarette smoke or combined with LPS: to establish a suitable model for study of airway mucus hypersecretion in chronic obstructive pulmonary disease. Pulm Pharmacol Ther 2012; 25:349-56. [PMID: 22732689 DOI: 10.1016/j.pupt.2012.06.004] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Revised: 06/13/2012] [Accepted: 06/15/2012] [Indexed: 12/21/2022]
Abstract
There is a need of in vivo COPD models for mucus hypersecretion study. The current study compared three rat models induced by cigarette smoke (CS) exposure alone or combined with pre- or post-treatment with lipopolysaccharide (LPS). Forty rats were randomly divided into the four following groups: control group, LPS + CS group (CS exposure for 4-wk combined with LPS pretreatment), CS group (CS exposure for 6-wk), CS + LPS group (CS exposure for 6-wk combined with LPS post-treatment). The results showed that both CS and CS + LPS groups had more severe pro-inflammatory cytokines secretion, inflammatory cells infiltration, and emphysema as compared to that in LPS + CS group animals. From the PAS staining sections, we found a remarkable hyperplasia of goblet-cell in epitheliums of trachea, bronchi, and bronchiole of all of three modeling groups, especially in CS and CS + LPS groups. From the western-blotting results, there were significant increase in the activities of NF-κB, AP-1, EGFR, TLR4, and MAPKs in all of three modeling groups, while HDAC2 activity was remarkably repressed in CS group only. Moreover, the expression and secretion of MUC5AC were exhibited significant increase in all of three modeling groups, which correlated well with the total transcription activity integration of NF-κB, AP-1, and HDAC2 (r = 0.946, p < 0.01). These results indicated that MUC5AC hypersecretion is consistent with activation of EGFR-AP-1/NF-κB and TLR4-AP-1/NF-κB signaling pathways, as well as repression of HDAC2 activity. Based on these results, we speculated that the 6-wk CS exposure rat model is a reliable COPD rat model, while the 6-wk CS exposure combined with LPS post-treatment rat model is a suitable COPD exacerbation model for mucus hypersecretion study.
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Affiliation(s)
- Yi-Chu Nie
- Key Laboratory of Gene Engineering of the Ministry of Education, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, No. 135, Xingangxi Street, Guangzhou 510275, PR China
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Nie YC, Wu H, Li PB, Luo YL, Long K, Xie LM, Shen JG, Su WW. Anti-inflammatory effects of naringin in chronic pulmonary neutrophilic inflammation in cigarette smoke-exposed rats. J Med Food 2012; 15:894-900. [PMID: 22985397 DOI: 10.1089/jmf.2012.2251] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Naringin, a well-known flavanone glycoside of grapefruit and citrus fruits, was found to be as an effective anti-inflammatory compound in our previous lipopolysaccharide-induced acute lung injury mouse model via blockading activity of nuclear factor κB. The current study sought to explore the anti-inflammatory effects of naringin on chronic pulmonary neutrophilic inflammation in cigarette smoke (CS)-induced rats. Seventy Sprague-Dawley rats were randomly divided into seven groups to study the effects of CS with or without various concentrations of naringin or saline for 8 weeks. The results revealed that naringin supplementation at 20, 40, and 80 mg/kg significantly increased body weight of CS-induced rats as compared to that in the CS group. Moreover, naringin of 20, 40, and 80 mg/kg prevented CS-induced infiltration of neutrophils and activation of myeloperoxidase and matrix metalloproteinase-9, in parallel with suppression of the release of cytokines, such as tumor necrosis factor-α and interleukin-8 (IL-8). IL-10 in bronchoalveolar lavage fluid was significantly suppressed after CS exposure, but dose dependently elevated by naringin. The results from hematoxylin and eosin staining revealed that naringin dose dependently reduced CS-induced infiltration of inflammatory cells, thickening of the bronchial wall, and expansion of average alveolar airspace. In conclusion, our data suggest that naringin is an effective anti-inflammatory compound for attenuating chronic pulmonary neutrophilic inflammation in CS-induced rats.
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Affiliation(s)
- Yi-Chu Nie
- Key Laboratory of Gene Engineering of the Ministry of Education and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
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