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Jeong JS, Yoon Y, Kim W, Kim HJ, Park HJ, Park KH, Lee KB, Kim SR, Kim SH, Park YS, Hong SB, Hong SJ, Kim DI, Lee GH, Chae HJ, Lee YC. NecroX Improves Polyhexamethylene Guanidine-induced Lung Injury by Regulating Mitochondrial Oxidative Stress and Endoplasmic Reticulum Stress. Am J Respir Cell Mol Biol 2023; 69:57-72. [PMID: 36930952 DOI: 10.1165/rcmb.2021-0459oc] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 03/16/2023] [Indexed: 03/19/2023] Open
Abstract
Various environmental compounds are inducers of lung injury. Mitochondria are crucial organelles that can be affected by many lung diseases. NecroX is an indole-derived antioxidant that specifically targets mitochondria. We aimed to evaluate the therapeutic potential and related molecular mechanisms of NecroX in preclinical models of fatal lung injury. We investigated the therapeutic effects of NecroX on two different experimental models of lung injury induced by polyhexamethylene guanidine (PHMG) and bleomycin, respectively. We also performed transcriptome analysis of lung tissues from PHMG-exposed mice and compared the expression profiles with those from dozens of bleomycin-induced fibrosis public data sets. Respiratory exposure to PHMG and bleomycin led to fatal lung injury manifesting extensive inflammation followed by fibrosis. These specifically affected mitochondria regarding biogenesis, mitochondrial DNA integrity, and the generation of mitochondrial reactive oxygen species in various cell types. NecroX significantly improved the pathobiologic features of the PHMG- and bleomycin-induced lung injuries through regulation of mitochondrial oxidative stress. Endoplasmic reticulum stress was also implicated in PHMG-associated lung injuries of mice and humans, and NecroX alleviated PHMG-induced lung injury and the subsequent fibrosis, in part, via regulation of endoplasmic reticulum stress in mice. Gene expression profiles of PHMG-exposed mice were highly consistent with public data sets of bleomycin-induced lung injury models. Pathways related to mitochondrial activities, including oxidative stress, oxidative phosphorylation, and mitochondrial translation, were upregulated, and these patterns were significantly reversed by NecroX. These findings demonstrate that NecroX possesses therapeutic potential for fatal lung injury in humans.
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Affiliation(s)
- Jae Seok Jeong
- Department of Internal Medicine, Research Center for Pulmonary Disorders, Medical School
- Research Institute of Clinical Medicine, and
- Korea Zoonosis Research Institute, Jeonbuk National University, Iksan, South Korea
- Biomedical Research Institute, Jeonbuk National University Hospital, Jeonju, South Korea
| | - Yeogha Yoon
- Department of Life Sciences, Ewha Womans University, Seoul, South Korea
| | - Wankyu Kim
- Department of Life Sciences, Ewha Womans University, Seoul, South Korea
| | - Hee Jung Kim
- Department of Internal Medicine, Research Center for Pulmonary Disorders, Medical School
- Biomedical Research Institute, Jeonbuk National University Hospital, Jeonju, South Korea
| | - Hae Jin Park
- Department of Internal Medicine, Research Center for Pulmonary Disorders, Medical School
| | - Kyung Hwa Park
- Department of Internal Medicine, Research Center for Pulmonary Disorders, Medical School
| | - Kyung Bae Lee
- Functional Food Evaluation Center, National Food Cluster, Iksan, South Korea
| | - So Ri Kim
- Department of Internal Medicine, Research Center for Pulmonary Disorders, Medical School
- Research Institute of Clinical Medicine, and
- Biomedical Research Institute, Jeonbuk National University Hospital, Jeonju, South Korea
| | - Soon Ha Kim
- MitoImmnune Therapeutics, Seoul, South Korea
| | | | - Sang-Bum Hong
- Department of Pulmonology and Critical Care Medicine, and
| | - Soo-Jong Hong
- Department of Pediatrics, Childhood Asthma and Atopy Center, Environmental Health Center, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, South Korea; and
| | - Dong Im Kim
- Inhalation Toxicology Research Center, Korea Institute of Toxicology, Jeongeup, South Korea
| | | | - Han-Jung Chae
- School of Pharmacy, Jeonbuk National University, Jeonju, South Korea
- Non-Clinical Evaluation Center, and
| | - Yong Chul Lee
- Department of Internal Medicine, Research Center for Pulmonary Disorders, Medical School
- Research Institute of Clinical Medicine, and
- Korea Zoonosis Research Institute, Jeonbuk National University, Iksan, South Korea
- Biomedical Research Institute, Jeonbuk National University Hospital, Jeonju, South Korea
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Lai R, Zhao C, Guo W, Xiao Y, Li R, Liu L, Pan H. The longitudinal and regional analysis of bleomycin-induced pulmonary fibrosis in mice by microcomputed tomography. Heliyon 2023; 9:e15681. [PMID: 37180915 PMCID: PMC10173631 DOI: 10.1016/j.heliyon.2023.e15681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 04/15/2023] [Accepted: 04/18/2023] [Indexed: 05/16/2023] Open
Abstract
Introduction Microcomputed tomography (micro-CT) is powerful for assessment of the progression of lung fibrosis in animal model, but current whole lung analysis (WLA) methods are time-consuming. Here, a longitudinal and regional analysis (LRA) method was developed to assess fibrosis easily and quickly by micro-CT. Method Firstly, we investigated the distribution pattern of lesions in BLM-induced pulmonary fibrosis mice. Then, the VOIs for LRA were selected based on the anatomical locations and we compared the robustness, accuracy, repeatability, analysis time of LRA to WLA. Additionally, LRA was applied to assess different stages of pulmonary fibrosis, and was validated with conventional endpoint measurements (such as lung hydroxyproline and histopathology). Results The lesions of fibrosis in 66 bleomycin (BLM)-induced pulmonary fibrosis mice were mostly in the middle and upper parts of lungs. By applying LRA, the percentages of high-density voxels in selected volumes of interest (VOIs) were well correlated with that in WLA both at Day 7 and Day 21 after bleomycin induction (R2 = 0.8784 and 0.8464, respectively). The relative standard deviation (RSD) of the percentage of high-density voxels in the VOIs was lower than that of WLA (P < 0.05). The cost time of LRA was shorter than that of WLA (P < 0.05) and the accuracy of LRA was further confirmed by the histological analysis and biochemical quantification of hydroxyproline. Conclusion LRA is probably an easier and more time-saving method to assess fibrosis formation and evaluate treatment efficacy.
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Affiliation(s)
- Ruogu Lai
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Caiping Zhao
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Wanyi Guo
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Yao Xiao
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510000, China
| | - Runze Li
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510000, China
| | - Liang Liu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510000, China
- Corresponding author. State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China.
| | - Hudan Pan
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510000, China
- Corresponding author.
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Yang X, Huang XJ, Chen Z, Xu AL, Zhou H, Bi XL, Yan PY, Xie Y. A novel quantification method of lung fibrosis based on Micro-CT images developed with the optimized pulmonary fibrosis mice model induced by bleomycin. Heliyon 2023; 9:e13598. [PMID: 36895392 PMCID: PMC9988492 DOI: 10.1016/j.heliyon.2023.e13598] [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: 10/24/2022] [Revised: 02/04/2023] [Accepted: 02/05/2023] [Indexed: 02/12/2023] Open
Abstract
Background and aims Idiopathic pulmonary fibrosis (IPF) is a fibrosing lung disease with unknown etiology, leading to cough and dyspnoea, which is also one of the most common sequelae affecting the quality of life of COVID-19 survivors. There is no cure for IPF patients. We aim to develop a reliable IPF animal model with quantification of fibrosis based on Micro-Computer Tomography (micro-CT) images for the new drug discovery, because different bleomycin administration routes, doses, and intervals are reported in the literature, and there is no quantitative assessment of pulmonary fibrosis based on micro-CT images in animal studies. Methods We compared three dosages (1.25 mg/kg, 2.5 mg/kg, and 5 mg/kg) of intratracheal bleomycin administration and experiment intervals (14 and 21 days) in C57BL/6 mice by investigating survival rates, pulmonary histopathology, micro-CT, peripheral CD4+ & CD8+ cells, and cytokines. Moreover, a simple and reliable new method was developed for scoring fibrosis in live mice based on Micro-CT images by using Image J software, which transfers the dark sections in pulmonary Micro-CT images to light colors on a black background. Results The levels of hydroxyproline, inflammation cytokine, fibrotic pathological changes, and collagen deposition in the lungs of mice were bleomycin dose-dependent and time-dependent as well as the body weight loss. Based on the above results, the mice model at 21 days after being given bleomycin at 1.25 mg/kg has optimal pulmonary fibrosis with a high survival rate and low toxicity. There is a significant decrease in the light area (gray value at 9.86 ± 0.72) in the BLM mice, indicating that a significant decrease in the alveolar air area was observed in BLM injured mice compared to normal groups (###p < 0.001), while the Pirfenidone administration increased the light area (gray value) to 21.71 ± 2.95 which is close to the value observed in the normal mice (gray value at 23.23 ± 1.66), which is consistent with the protein levels of Col1A1, and α-SMA. Notably, the standard deviations for the consecutive six images of each group indicate the precision of this developed quantitation method for the micro-CT image taken at the fifth rib of each mouse. Conclusion Provided a quantifying method for Micro-CT images in an optimal and repeatable pulmonary fibrosis mice model for exploring novel therapeutic interventions.
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Affiliation(s)
- Xi Yang
- State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau, China
| | - Xue-Jun Huang
- Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine, Guangzhou, Guangdong Province, China.,Guangdong Provincial Key Laboratory of Research and Development in Traditional Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Zhang Chen
- State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau, China
| | - Ai-Li Xu
- Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine, Guangzhou, Guangdong Province, China.,Guangdong Provincial Key Laboratory of Research and Development in Traditional Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Hua Zhou
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiao-Li Bi
- Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine, Guangzhou, Guangdong Province, China.,Guangdong Provincial Key Laboratory of Research and Development in Traditional Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Pei-Yu Yan
- Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Ying Xie
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
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Song S, Fu Z, Guan R, Zhao J, Yang P, Li Y, Yin H, Lai Y, Gong G, Zhao S, Yu J, Peng X, He Y, Luo Y, Zhong N, Su J. Intracellular hydroxyproline imprinting following resolution of bleomycin-induced pulmonary fibrosis. Eur Respir J 2021; 59:13993003.00864-2021. [PMID: 34561295 PMCID: PMC9068975 DOI: 10.1183/13993003.00864-2021] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 09/14/2021] [Indexed: 11/05/2022]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a fatal lung disease with few treatment options. The poor success in developing anti-IPF strategies have impelled researchers to reconsider the importance of choice for animal model and assessment methodologies. Currently, it is still not settled whether the bleomycin-induced lung fibrosis mouse model finally returns to resolution.This study aimed to follow the dynamic fibrotic features of BLM (Bleomycin)-treated mouse lungs with extended durations through a combination of the latest technologies (micro-CT imaging and histological detection of degraded collagens) with traditional methods. In addition, we also applied immunohistochemistry to explore the distribution of all hydroxyproline-containing molecules.As determined by classical biochemical method, total lung hydroxyproline contents reached peak at 4-week after bleomycin injury and maintained a steady high level thereafter until the end of the experiments (16-week). This result seemed to partially contradict with the changes of other fibrosis evaluation parameters, which indicated a gradual degradation of collagens and a recovery of lung aeration post the fibrosis peak. This inconsistency was well reconciled by our data from immunostaining against hydroxyproline and a fluorescent peptide staining against degraded collagen, together showing large amounts of hydroxyproline-rich degraded collagen fragments detained and enriched within the intracellular regions at 10- or 16-week, rather than at 4-week post the BLM-treatment. Hence, our present data not only offer respiratory researchers a new perspective towards the resolution nature of mouse lung fibrosis, but also remind them to be cautious while using hydroxyproline content assay to evaluate the severity of fibrosis.
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Affiliation(s)
- Shengren Song
- Department of Pathophysiology, Guizhou Medical University, Guiyang, Guizhou, China.,State Key Laboratory of Respiratory Diseases, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.,Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou, China.,These authors contributed equally to this work
| | - Zhenli Fu
- State Key Laboratory of Respiratory Diseases, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.,These authors contributed equally to this work
| | - Ruijuan Guan
- Shenzhen International Institute for Biomedical Research, Shenzhen, Guangdong, China.,These authors contributed equally to this work
| | - Jie Zhao
- Guangdong Provincial Key Laboratory of Biomedical Imaging and Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, China.,These authors contributed equally to this work
| | - Penghui Yang
- State Key Laboratory of Respiratory Diseases, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.,These authors contributed equally to this work
| | - Yang Li
- Guangdong Provincial Key Laboratory of Biomedical Imaging and Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, China
| | - Hang Yin
- State Key Laboratory of Respiratory Diseases, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Yunxin Lai
- State Key Laboratory of Respiratory Diseases, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Gencheng Gong
- State Key Laboratory of Respiratory Diseases, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Simin Zhao
- State Key Laboratory of Respiratory Diseases, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jiangtian Yu
- Shenzhen International Institute for Biomedical Research, Shenzhen, Guangdong, China
| | - Xiaomin Peng
- State Key Laboratory of Respiratory Diseases, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Ying He
- State Key Laboratory of Respiratory Diseases, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Yumei Luo
- State Key Laboratory of Respiratory Diseases, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Nanshan Zhong
- Department of Pathophysiology, Guizhou Medical University, Guiyang, Guizhou, China .,State Key Laboratory of Respiratory Diseases, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jin Su
- State Key Laboratory of Respiratory Diseases, National Clinical Research Center for Respiratory Diseases, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China .,Shenzhen International Institute for Biomedical Research, Shenzhen, Guangdong, China
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5
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Mahmutovic Persson I, von Wachenfeldt K, Waterton JC, Olsson LE. Imaging Biomarkers in Animal Models of Drug-Induced Lung Injury: A Systematic Review. J Clin Med 2020; 10:jcm10010107. [PMID: 33396865 PMCID: PMC7795017 DOI: 10.3390/jcm10010107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 12/24/2020] [Indexed: 12/28/2022] Open
Abstract
For drug-induced interstitial lung disease (DIILD) translational imaging biomarkers are needed to improve detection and management of lung injury and drug-toxicity. Literature was reviewed on animal models in which in vivo imaging was used to detect and assess lung lesions that resembled pathological changes found in DIILD, such as inflammation and fibrosis. A systematic search was carried out using three databases with key words “Animal models”, “Imaging”, “Lung disease”, and “Drugs”. A total of 5749 articles were found, and, based on inclusion criteria, 284 papers were selected for final data extraction, resulting in 182 out of the 284 papers, based on eligibility. Twelve different animal species occurred and nine various imaging modalities were used, with two-thirds of the studies being longitudinal. The inducing agents and exposure (dose and duration) differed from non-physiological to clinically relevant doses. The majority of studies reported other biomarkers and/or histological confirmation of the imaging results. Summary of radiotracers and examples of imaging biomarkers were summarized, and the types of animal models and the most used imaging modalities and applications are discussed in this review. Pathologies resembling DIILD, such as inflammation and fibrosis, were described in many papers, but only a few explicitly addressed drug-induced toxicity experiments.
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Affiliation(s)
- Irma Mahmutovic Persson
- Department of Translational Medicine, Medical Radiation Physics, Lund University, 20502 Malmö, Sweden;
- Correspondence: ; Tel.: +46-736839562
| | | | - John C. Waterton
- Bioxydyn Ltd., Science Park, Manchester M15 6SZ, UK;
- Manchester Academic Health Sciences Centre, University of Manchester, Manchester M13 9PL, UK
| | - Lars E. Olsson
- Department of Translational Medicine, Medical Radiation Physics, Lund University, 20502 Malmö, Sweden;
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Conditional deletion of Nedd4-2 in lung epithelial cells causes progressive pulmonary fibrosis in adult mice. Nat Commun 2020; 11:2012. [PMID: 32332792 PMCID: PMC7181726 DOI: 10.1038/s41467-020-15743-6] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 03/26/2020] [Indexed: 12/13/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a chronic progressive interstitial lung disease characterized by patchy scarring of the distal lung with limited therapeutic options and poor prognosis. Here, we show that conditional deletion of the ubiquitin ligase Nedd4-2 (Nedd4l) in lung epithelial cells in adult mice produces chronic lung disease sharing key features with IPF including progressive fibrosis and bronchiolization with increased expression of Muc5b in peripheral airways, honeycombing and characteristic alterations in the lung proteome. NEDD4-2 is implicated in the regulation of the epithelial Na+ channel critical for proper airway surface hydration and mucus clearance and the regulation of TGFβ signaling, which promotes fibrotic remodeling. Our data support a role of mucociliary dysfunction and aberrant epithelial pro-fibrotic response in the multifactorial disease pathogenesis. Further, treatment with the anti-fibrotic drug pirfenidone reduced pulmonary fibrosis in this model. This model may therefore aid studies of the pathogenesis and therapy of IPF. Idiopathic pulmonary fibrosis (IPF) is a devastating disease with poor prognosis. Here, the authors show that deficiency of the E3 ubiqutin-protein ligase Nedd4-2 in airway epithelial cells causes IPF-like disease in adult mice. This model may aid studies of the pathogenesis and therapy of IPF.
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Shao R, Wang FJ, Lyu M, Yang J, Zhang P, Zhu Y. Ability to Suppress TGF-β-Activated Myofibroblast Differentiation Distinguishes the Anti-pulmonary Fibrosis Efficacy of Two Danshen-Containing Chinese Herbal Medicine Prescriptions. Front Pharmacol 2019; 10:412. [PMID: 31105564 PMCID: PMC6491955 DOI: 10.3389/fphar.2019.00412] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 04/01/2019] [Indexed: 02/06/2023] Open
Abstract
Background: Idiopathic pulmonary fibrosis (IPF) is a devastating lung disease with limited treatment options. It also leads to progressive respiratory failure, which subsequently affects the heart functionality, a pathological heart-lung interaction increasingly noticed and defined as pulmonary-heart disease (PHD). Traditional Chinese medicine (TCM) theory for treating “phlegm-stasis cementation syndrome” may suggest a possibility of treating PHD complication with Chinese medicine prescriptions previously used for cardiovascular diseases. Methods: Here, we evaluate the efficacies of two compound Chinese medicine prescriptions, Danlou prescription (DLP) and Danhong prescription (DHP), which share a common herbal component, Salvia miltiorrhiza (Danshen), on pulmonary fibrosis. Severity grades of Bleomycin (BLM)-induced pulmonary fibrosis were assessed by micro-Computerized Tomography (μCT) in accordance with the clinical evaluation standard. Lung pathological changes and collagen deposition were investigated by histopathology. Myofibroblast differentiation was assessed by immunohistochemistry of α-SMA and TGF-β receptor type II expression in situ. Network pharmacology analysis of the drug-target interaction in IPF progression for DLP or DHP was performed using Ingenuity® Pathways Analysis (IPA) system. Results: We show that a non-invasive μCT effectively monitor and quantify BLM-induced pulmonary fibrosis and its treatment efficacy by Chinese medicine prescription in rodents. In addition, although both containing Salvia miltiorrhiza, DLP but not DHP mitigates BLM-induced lung fibrosis by inhibiting the TGF-β signaling-activated myofibroblast differentiation and α-SMA expression in a mouse model. Core analysis by IPA revealed that DLP ingredients regulated not only pulmonary fibrosis related inflammatory genes but also genes associated with myofibroblast activation and collagen deposition. Conclusion: This study suggests that a clinically efficacious cardiovascular Chinese herbal medicine (DLP) can be successfully repurposed to treat a lung disease in pulmonary fibrosis guided by TCM theory. Our comparative study between DLP and DHP demonstrated a critical requirement of suppressing both pro-inflammatory and pro-fibrotic pathways for the treatment of pulmonary fibrosis, supporting that a multi-component prescription capable of “removing both phlegm and blood stasis” will better achieve co-protection of heart and lung in PHD.
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Affiliation(s)
- Rui Shao
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China.,Research and Development Center of Tianjin University of Traditional Chinese Medicine, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Fu-Jiang Wang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China.,Research and Development Center of Tianjin University of Traditional Chinese Medicine, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Ming Lyu
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China.,Research and Development Center of Tianjin University of Traditional Chinese Medicine, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Jian Yang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China.,Research and Development Center of Tianjin University of Traditional Chinese Medicine, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Peng Zhang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China.,Research and Development Center of Tianjin University of Traditional Chinese Medicine, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Yan Zhu
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China.,Research and Development Center of Tianjin University of Traditional Chinese Medicine, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
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Ruscitti F, Ravanetti F, Essers J, Ridwan Y, Belenkov S, Vos W, Ferreira F, KleinJan A, van Heijningen P, Van Holsbeke C, Cacchioli A, Villetti G, Stellari FF. Longitudinal assessment of bleomycin-induced lung fibrosis by Micro-CT correlates with histological evaluation in mice. Multidiscip Respir Med 2017; 12:8. [PMID: 28400960 PMCID: PMC5387277 DOI: 10.1186/s40248-017-0089-0] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Accepted: 03/10/2017] [Indexed: 01/15/2023] Open
Abstract
Background The intratracheal instillation of bleomycin in mice induces early damage to alveolar epithelial cells and development of inflammation followed by fibrotic tissue changes and represents the most widely used model of pulmonary fibrosis to investigate human IPF. Histopathology is the gold standard for assessing lung fibrosis in rodents, however it precludes repeated and longitudinal measurements of disease progression and does not provide information on spatial and temporal distribution of tissue damage. Here we investigated the use of the Micro-CT technique to allow the evaluation of disease onset and progression at different time-points in the mouse bleomycin model of lung fibrosis. Micro-CT was throughout coupled with histological analysis for the validation of the imaging results. Methods In bleomycin-instilled and control mice, airways and lung morphology changes were assessed and reconstructed at baseline, 7, 14 and 21 days post-treatment based on Micro-CT images. Ashcroft score, percentage of collagen content and percentage of alveolar air area were detected on lung slides processed by histology and subsequently compared with Micro-CT parameters. Results Extent (%) of fibrosis measured by Micro-CT correlated with Ashcroft score, the percentage of collagen content and the percentage of alveolar air area (r2 = 0.91; 0.77; 0.94, respectively). Distal airway radius also correlated with the Ashcroft score, the collagen content and alveolar air area percentage (r2 = 0.89; 0.78; 0.98, respectively). Conclusions Micro-CT data were in good agreement with histological read-outs as micro-CT was able to quantify effectively and non-invasively disease progression longitudinally and to reduce the variability and number of animals used to assess the damage. This suggests that this technique is a powerful tool for understanding experimental pulmonary fibrosis and that its use could translate into a more efficient drug discovery process, also helping to fill the gap between preclinical setting and clinical practice.
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Affiliation(s)
| | - Francesca Ravanetti
- Dipartimento di Scienze Medico Veterinarie, Università di Parma, Parma, Italy
| | - Jeroen Essers
- Department of Molecular Genetics, Vascular Surgery, and Radiation Oncology, Erasmus MC, Rotterdam, The Netherlands
| | - Yanto Ridwan
- Department of Molecular Genetics, Vascular Surgery, and Radiation Oncology, Erasmus MC, Rotterdam, The Netherlands
| | | | - Wim Vos
- Fluidda NV, Kontich, Belgium
| | | | - Alex KleinJan
- Department of Pulmonary Medicine Erasmus MC, Rotterdam, The Netherlands
| | - Paula van Heijningen
- Department of Molecular Genetics, Vascular Surgery, and Radiation Oncology, Erasmus MC, Rotterdam, The Netherlands
| | | | - Antonio Cacchioli
- Dipartimento di Scienze Medico Veterinarie, Università di Parma, Parma, Italy
| | | | - Franco Fabio Stellari
- Chiesi S.p.A., Pre-Clinical R & D, Parma, Italy.,Chiesi Farmaceutici, Pharmacology & Toxicology Department Corporate Pre-Clinical R & D, Largo Belloli, 11/A, Parma, 43122 Italy
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Chen YJ, Chen CM, Wang C, Chou HC. Microcomputed tomography assessment of lipopolysaccharide-induced acute lung injury in rat. Exp Lung Res 2016; 42:103-9. [DOI: 10.3109/01902148.2016.1159261] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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10
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Abstract
The 2nd Cross Company Respiratory Symposium (CCRS), held in Horsham, U.K. in 2012, brought together representatives from across the pharmaceutical industry with expert academics, in the common interest of improving the design and translational predictiveness of in vivo models of respiratory disease. Organized by the respiratory representatives of the European Federation of Pharmaceutical Industries and Federations (EFPIA) group of companies involved in the EU-funded project (U-BIOPRED), the aim of the symposium was to identify state-of-the-art improvements in the utility and design of models of respiratory disease, with a view to improving their translational potential and reducing wasteful animal usage. The respiratory research and development community is responding to the challenge of improving translation in several ways: greater collaboration and open sharing of data, careful selection of the species, complexity and chronicity of the models, improved practices in preclinical research, continued refinement in models of respiratory diseases and their sub-types, greater understanding of the biology underlying human respiratory diseases and their sub-types, and finally greater use of human (and especially disease-relevant) cells, tissues and explants. The present review highlights these initiatives, combining lessons from the symposium and papers published in Clinical Science arising from the symposium, with critiques of the models currently used in the settings of asthma, idiopathic pulmonary fibrosis and COPD. The ultimate hope is that this will contribute to a more rational, efficient and sustainable development of a range of new treatments for respiratory diseases that continue to cause substantial morbidity and mortality across the world.
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Choi EJ, Jin GY, Bok SM, Han YM, Lee YS, Jung MJ, Kwon KS. Serial micro-CT assessment of the therapeutic effects of rosiglitazone in a bleomycin-induced lung fibrosis mouse model. Korean J Radiol 2014; 15:448-55. [PMID: 25053904 PMCID: PMC4105807 DOI: 10.3348/kjr.2014.15.4.448] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2013] [Accepted: 03/24/2014] [Indexed: 12/17/2022] Open
Abstract
Objective The aim of this study was to assess the therapeutic effects of rosiglitazone with serial micro-CT findings before and after rosiglitazone administration in a lung fibrosis mouse model induced with bleomycin. Materials and Methods We instilled the bleomycin solution directly into the trachea in twenty mice (female, C57BL/6 mice). After the instillation with bleomycin, mice were closely observed for 3 weeks and then all mice were scanned using micro-CT without sacrifice. At 3 weeks, the mice were treated with rosiglitazone on days 21 to 27 if they had abnormal CT findings (n = 9, 45%). For the mice treated with rosiglitazone, we performed micro-CT with mouse sacrifice 2 weeks after the rosiglitazone treatment completion. We assessed the abnormal CT findings (ground glass attenuation, consolidation, bronchiectasis, reticular opacity, and honeycombing) using a five-point scale at 3 and 6 weeks using Wilcoxon-signed ranked test. The micro-CT findings were correlated with the histopathologic results. Results One out of nine (11.1%) mice improved completely. In terms of consolidation, all mice (100%) showed marked decrease from 3.1 ± 1.4 at 3 weeks to 0.9 ± 0.9 at 6 weeks (p = 0.006). At 6 weeks, mild bronchiectasis (n = 6, 66.7%), mild reticular opacity (n = 7, 77.8%) and mild honeycomb patterns (n = 3, 33.3%) appeared. Conclusion A serial micro-CT enables the evaluation of drug effects in a lung fibrosis mouse model.
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Affiliation(s)
- Eun Jung Choi
- Department of Radiology, Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Institute for Medical Sciences, Jeonju 561-712, Korea
| | - Gong Yong Jin
- Department of Radiology, Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Institute for Medical Sciences, Jeonju 561-712, Korea
| | - Se Mi Bok
- Department of Radiology, Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Institute for Medical Sciences, Jeonju 561-712, Korea
| | - Young Min Han
- Department of Radiology, Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Institute for Medical Sciences, Jeonju 561-712, Korea
| | - Young Sun Lee
- Department of Radiology, Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Institute for Medical Sciences, Jeonju 561-712, Korea
| | - Myung Ja Jung
- Department of Pathology, Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Institute for Medical Sciences, Jeonju 561-712, Korea
| | - Keun Sang Kwon
- Department of Preventive Medicine, Research Institute of Clinical Medicine of Chonbuk National University, Biomedical Research Institute of Chonbuk National University Hospital, Institute for Medical Sciences, Jeonju 561-712, Korea
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Paik SH, Kim WK, Park JS, Park CS, Jin GY. A Quantitative Study of Airway Changes on Micro-CT in a Mouse Asthma Model: Comparison With Histopathological Findings. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2013; 6:75-82. [PMID: 24404397 PMCID: PMC3881405 DOI: 10.4168/aair.2014.6.1.75] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 03/08/2013] [Accepted: 04/23/2013] [Indexed: 12/31/2022]
Abstract
Purpose To evaluate airway changes in ovalbumin-induced asthmatic mice in terms of postmortem micro-CT images and pathological findings. Methods Asthma was induced in mice by intraperitoneal injection and nasal instillation of ovalbumin aluminium hydroxide into mice (experimental group, n=6), and another group of mice received intraperitoneal injection and nasal instillation of distilled phosphate-buffered saline (control group, n=6). Bronchial lumen area was measured in the main bronchial lumen of the distal third bronchial branch level (6 parts per each mouse) on axial scans of Micro-CT, using a Lucion's smart pen (semi-automated) and a curve pen (manual). Bronchial wall thickness was obtained in 4 sections (2 levels on either side) after the third bronchial branch by measuring the diameter which was perpendicular to the longitudinal axis of the main bronchus on curved Multi-planar reconstruction (MPR) images. Histologic slides were obtained from the lesion that was matched with its CT images, and bronchial wall thicknesses were determined. Results The mean bronchial lumen area was 0.196±0.072 mm2 in the experimental group and 0.243±0.116 mm2 in the control group; the difference was significant. Bronchial wall thickness on micro-CT images (mean, 0.119±0.01 vs. 0.108±0.013 mm) and in pathological specimens (mean, 0.066±0.011 vs. 0.041±0.009 mm) were thicker in the experimental group than in the control group; bronchial wall thickness on micro-CT images correlated well with pathological thickness (for the experimental group, r=0.712; for the control group, r=0.46). The thick bronchial wall in the experimental group demonstrated submucosal hypertrophy along with goblet cell hyperplasia and smooth muscle hyperplasia. Conclusions The results of this study suggest that asthma may induce thickening of bronchial wall and narrowing of the lumen area on micro-CT images and that these results may significantly correlate with pathological findings.
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Affiliation(s)
- Sang-Hyun Paik
- Department of Radiology, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Won-Kyung Kim
- Department of Radiology, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Jai-Soung Park
- Department of Radiology, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Choon-Sik Park
- Division of Allergy and Respiratory Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Gong-Yong Jin
- Department of Radiology, Chonbuk National University Medical School, Jeonju, Korea
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Babin AL, Cannet C, Gérard C, Saint-Mezard P, Page CP, Sparrer H, Matsuguchi T, Beckmann N. Bleomycin-induced lung injury in mice investigated by MRI: model assessment for target analysis. Magn Reson Med 2011; 67:499-509. [PMID: 21656559 DOI: 10.1002/mrm.23009] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2011] [Revised: 03/25/2011] [Accepted: 04/28/2011] [Indexed: 12/12/2022]
Abstract
Magnetic resonance imaging (MRI) has been used to follow the course of bleomycin-induced lung injury in mice and to investigate two knockout mouse lines with the aim of providing potential therapeutic targets. Bleomycin (0.25 mg/kg) was administered intranasally six times, once a day. MRI was carried out on spontaneously breathing animals up to day 70 after bleomycin. Neither cardiac nor respiratory gating was applied during image acquisition. A long lasting response following bleomycin has been detected by MRI in the lungs of male C57BL/6 mice. Histology showed that, from day 14-70 after bleomycin, fibrosis was the predominant component of the injury. Female C57BL/6 mice displayed a smaller response than males. Bleomycin-induced injury was significantly more pronounced in C57BL/6 than in Balb/C mice. MRI and histology demonstrated a protection against bleomycin insult in female heterozygous and male homozygous cancer Osaka thyroid kinase knockout animals. In contrast, no protection was seen in cadherin-11 knockout animals. In summary, MRI can quantify, in spontaneously breathing mice, bleomycin-induced lung injury. With the ability for repetitive measurements in the same animal, the technique is attractive for in vivo target analysis and compound profiling in this murine model.
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Affiliation(s)
- Anna L Babin
- Global Imaging Group, Novartis Institutes for BioMedical Research, Basel, Switzerland
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Quantitative measurement of bleomycin-induced lung fibrosis in rabbits using sequential in vivo regional analysis and high-resolution computed tomography: correlation with pathologic findings. Acad Radiol 2011; 18:672-81. [PMID: 21393029 DOI: 10.1016/j.acra.2011.01.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Revised: 01/04/2011] [Accepted: 01/07/2011] [Indexed: 11/21/2022]
Abstract
RATIONALE AND OBJECTIVES To examine the feasibility of quantitative high-resolution computed tomography (HRCT) findings to monitor the stage of bleomycin-induced pulmonary fibrosis in rabbits by correlating HRCT and pathologic scores and analyzing sequential changes on HRCT images using regional volume histograms. MATERIALS AND METHODS Lung fibrosis was induced by injecting bleomycin intratracheally into 23 Japanese white rabbits. Rabbits were randomly separated into seven groups depending on follow-up period (12-hour, 24-hour, 3-day, 7-day, 14-day, 21-day, and 28-day). Four-row HRCT examinations were performed at any of the seven time points in each follow-up period and just after bleomycin administration in addition to pre-bleomycin administration as the baseline scan. Scores of consolidation, homogenous ground-glass opacity (GGO), inhomogeneous GGO, reticulolinear shadow, and honey-comb formation were recorded as ratio of affected area to total cross-section in four transaxial planes. Inflammatory and fibrous changes were scored histopathologically. Correlations between HRCT and pathologic findings were assessed. Sequential changes on HRCT images in areas with pathologically confirmed fibrosis were assessed on volume histograms of cubic regions of interest (ROI) using quantitative parameters. RESULTS Consolidation and inhomogeneous GGO exhibited fair correlations with inflammation scores (r = 0.273, P = .009, and r = 0.393, P < .001); reticulolinear shadow and inhomogeneous GGO had a fair and good correlation, respectively, with fibrous scores (r = 0.327, P = .001, and r = 0.579, P < .001). Inhomogeneous GGO was hardly detected on regional images at 21 and 28 days after bleomycin administration. As to mean computed tomography attenuation, skewness, and kurtosis, inhomogeneous GGO differed from reticulolinear shadow and consolidation. CONCLUSION Using appropriate ROI settings, quantitative assessment of inhomogeneous GGO with regional volume histograms enables us to monitor the progression of lung fibrosis by sequential observations.
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Jin GY, Bok SM, Han YM, Chung MJ, Yoon KH, Kim SR, Lee YC. Effectiveness of rosiglitazone on bleomycin-induced lung fibrosis: Assessed by micro-computed tomography and pathologic scores. Eur J Radiol 2011; 81:1901-6. [PMID: 21296518 DOI: 10.1016/j.ejrad.2010.12.061] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2010] [Accepted: 12/28/2010] [Indexed: 01/01/2023]
Abstract
Peroxisome proliferator-activated receptor-γ (PPARγ) agonists exhibit potent anti-fibrotic effects in the lung and other tissues. Recently, micro-computed tomography (CT) has been a useful tool for the investigation of lung diseases in small animals and is now increasingly applied to visualize and quantify the pulmonary structures. However, there is little information on the assessment for therapeutic effects of PPARγ agonists on the pulmonary fibrosis in mice using micro-CT. This study was aimed to determine the capability of micro-CT in examining the effects of rosiglitazone on pulmonary fibrosis. We used a murine model of bleomycin-induced lung fibrosis to evaluate the feasibility of micro-CT in evaluating the therapeutic potential of rosiglitazone on pulmonary fibrosis, comparing with pathologic scores. On micro-CT findings, ground glass opacity (80%) and consolidation (20%) were observed predominantly at 3 weeks after the instillation of bleomycin, and the radiologic features became more complex at 6 weeks. In bleomycin-instilled mice treated with rosiglitazone, the majority (80%) showed normal lung features on micro-CT. Radiological-pathologic correlation analyses revealed that ground glass opacity and consolidation were correlated closely with acute inflammation, while reticular opacity was well correlated with histological honeycomb appearance. These results demonstrate that rosiglitazone displays a protective effect on pulmonary fibrosis in mice and that the visualization of bleomycin-induced pulmonary fibrosis using micro-CT is satisfactory to assess the effects of rosiglitazone. It implies that micro-CT can be applied to evaluate therapeutic efficacies of a variety of candidate drugs for lung diseases.
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Affiliation(s)
- Gong Yong Jin
- Department of Radiology, Chonbuk National University Medical School, Jeonju, Republic of Korea
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Rodt T, Luepke M, Boehm C, von Falck C, Stamm G, Borlak J, Seifert H, Galanski M. Phantom and cadaver measurements of dose and dose distribution in micro-CT of the chest in mice. Acta Radiol 2011; 52:75-80. [PMID: 21498330 DOI: 10.1258/ar.2010.100059] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND Micro-computed tomography (CT) allows high-resolution imaging of the chest in mice for small animal research with a significant radiation dose applied. PURPOSE To report on measurement of the applied radiation dose using different scan protocols in micro-CT of the chest in mice. MATERIAL AND METHODS Repetitive dose measurements were performed for four different micro-CT protocols (with/without respiratory gating) and for micro-CT fluoroscopy used for chest imaging. Measurements were carried out using thermoluminescence dosimeters (TLD) in mouse cadavers and in a PMMA phantom allowing measurement of the radiation dose in the direct path of rays and assessment of scattered radiation. RESULTS The dose measured inside and outside the chests of the cadavers varied between 190 und 210 mGy, respectively. The expected mean doses in mice in the direct path of rays for the four examined micro-CT protocols varied between 170 and 280 mGy. The mean values for 1 and 5 minutes of fluoroscopy were 17 mGy and 105 mGy, respectively. CONCLUSION The measured dose values are similar to the dose values for micro-CT of the chest reported so far. A relevant dose can be delivered by micro-CT of the chest, which could possibly interact with small animal studies. Therefore, the applied dose for a specific protocol should be known and adverse radiation effects be considered.
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Affiliation(s)
- Thomas Rodt
- Department of Radiology, Hannover Medical School
- Department of Molecular Medicine and Medical Biotechnology, Fraunhofer Institute for Experimental Medicine
| | - Matthias Luepke
- Institute for General Radiology and Medical Physics; University of Veterinary Medicine Hannover, Hannover, Germany
| | - Claudia Boehm
- Institute for General Radiology and Medical Physics; University of Veterinary Medicine Hannover, Hannover, Germany
| | - Christian von Falck
- Department of Radiology, Hannover Medical School
- Department of Molecular Medicine and Medical Biotechnology, Fraunhofer Institute for Experimental Medicine
| | - Georg Stamm
- Department of Radiology, Hannover Medical School
| | - Jürgen Borlak
- Department of Molecular Medicine and Medical Biotechnology, Fraunhofer Institute for Experimental Medicine
| | - Hermann Seifert
- Institute for General Radiology and Medical Physics; University of Veterinary Medicine Hannover, Hannover, Germany
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Rodt T, von Falck C, Dettmer S, Halter R, Maus R, Ask K, Kolb M, Gauldie J, Länger F, Hoy L, Welte T, Galanski M, Maus UA, Borlak J. Micro-computed tomography of pulmonary fibrosis in mice induced by adenoviral gene transfer of biologically active transforming growth factor-β1. Respir Res 2010; 11:181. [PMID: 21176193 PMCID: PMC3022722 DOI: 10.1186/1465-9921-11-181] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Accepted: 12/22/2010] [Indexed: 11/29/2022] Open
Abstract
Background Micro-computed tomography (micro-CT) is a novel tool for monitoring acute and chronic disease states in small laboratory animals. Its value for assessing progressive lung fibrosis in mice has not been reported so far. Here we examined the importance of in vivo micro-CT as non-invasive tool to assess progression of pulmonary fibrosis in mice over time. Methods Pulmonary fibrosis was induced in mice by intratracheal delivery of an adenoviral gene vector encoding biologically active TGF-ß1 (AdTGF-ß1). Respiratory gated and ungated micro-CT scans were performed at 1, 2, 3, and 4 weeks post pulmonary adenoviral gene or control vector delivery, and were then correlated with respective histopathology-based Ashcroft scoring of pulmonary fibrosis in mice. Visual assessment of image quality and consolidation was performed by 3 observers and a semi-automated quantification algorithm was applied to quantify aerated pulmonary volume as an inverse surrogate marker for pulmonary fibrosis. Results We found a significant correlation between classical Ashcroft scoring and micro-CT assessment using both visual assessment and the semi-automated quantification algorithm. Pulmonary fibrosis could be clearly detected in micro-CT, image quality values were higher for respiratory gated exams, although differences were not significant. For assessment of fibrosis no significant difference between respiratory gated and ungated exams was observed. Conclusions Together, we show that micro-CT is a powerful tool to assess pulmonary fibrosis in mice, using both visual assessment and semi-automated quantification algorithms. These data may be important in view of pre-clinical pharmacologic interventions for the treatment of lung fibrosis in small laboratory animals.
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Affiliation(s)
- Thomas Rodt
- Department of Radiology, Hannover Medical School, Hannover, Germany.
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Longitudinal study of a mouse model of chronic pulmonary inflammation using breath hold gated micro-CT. Eur Radiol 2010; 20:2600-8. [DOI: 10.1007/s00330-010-1853-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2010] [Accepted: 05/26/2010] [Indexed: 10/19/2022]
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Lederlin M, Ozier A, Montaudon M, Begueret H, Ousova O, Marthan R, Berger P, Laurent F. Airway remodeling in a mouse asthma model assessed by in-vivo respiratory-gated micro-computed tomography. Eur Radiol 2009; 20:128-37. [PMID: 19685058 DOI: 10.1007/s00330-009-1541-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2009] [Revised: 05/27/2009] [Accepted: 07/01/2009] [Indexed: 12/13/2022]
Abstract
The aim of our study was to evaluate the feasibility of non-invasive respiratory-gated micro-computed tomography (micro-CT) for assessment of airway remodelling in a mouse asthma model. Six female BALB/c mice were challenged intranasally with ovalbumin. A control group of six mice received saline inhalation. All mice underwent plethysmographic study and micro-CT. For each mouse, peribronchial attenuation values of 12 bronchi were measured, from which a peribronchial density index (PBDI) was computed. Mice were then sacrificed and lungs examined histologically. Final analysis involved 10 out of 12 mice. Agreement of measurements across observers and over time was very good (intraclass correlation coefficients: 0.94-0.98). There was a significant difference in PBDI between asthmatic and control mice (-210 vs. -338.9 HU, P = 0.008). PBDI values were correlated to bronchial muscle area (r = 0.72, P = 0.018). This study shows that respiratory-gated micro-CT may allow non-invasive monitoring of bronchial remodelling in asthmatic mice and evaluation of innovative treatment effects.
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Affiliation(s)
- Mathieu Lederlin
- Laboratoire de Physiologie Cellulaire Respiratoire, Université Bordeaux 2, Bordeaux, France
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Lee JA, Jin GY, Bok SM, Han YM, Park SJ, Lee YC, Chung MJ, Youn GH. Utility of Micro CT in a Murine Model of Bleomycin-Induced Lung Fibrosis. Tuberc Respir Dis (Seoul) 2009. [DOI: 10.4046/trd.2009.67.5.436] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Jae A Lee
- Department of Radiology, Chonbuk National University Medical School, Jeonju, Korea
| | - Gong Yong Jin
- Department of Radiology, Chonbuk National University Medical School, Jeonju, Korea
- Research Center for Pulmonary Disorders, Chonbuk National University Medical School, Jeonju, Korea
- Research Institute of Clinical Medicine, Chonbuk National University Medical School, Jeonju, Korea
| | - Se Mi Bok
- Department of Radiology, Chonbuk National University Medical School, Jeonju, Korea
| | - Young Min Han
- Department of Radiology, Chonbuk National University Medical School, Jeonju, Korea
- Research Institute of Clinical Medicine, Chonbuk National University Medical School, Jeonju, Korea
| | - Seoung Ju Park
- Research Center for Pulmonary Disorders, Chonbuk National University Medical School, Jeonju, Korea
- Research Institute of Clinical Medicine, Chonbuk National University Medical School, Jeonju, Korea
- Department of Internal Medicine, Chonbuk National University Medical School, Jeonju, Korea
| | - Yong Chul Lee
- Research Center for Pulmonary Disorders, Chonbuk National University Medical School, Jeonju, Korea
- Research Institute of Clinical Medicine, Chonbuk National University Medical School, Jeonju, Korea
- Department of Internal Medicine, Chonbuk National University Medical School, Jeonju, Korea
| | - Myung Ja Chung
- Research Center for Pulmonary Disorders, Chonbuk National University Medical School, Jeonju, Korea
- Research Institute of Clinical Medicine, Chonbuk National University Medical School, Jeonju, Korea
- Department of Pathology, Chonbuk National University Medical School, Jeonju, Korea
| | - Gun Ha Youn
- Department of Radiology, Iksan Hospital, Iksan, Korea
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Intrapulmonary 3He Gas Distribution Depending on Bolus Size and Temporal Bolus Placement. Invest Radiol 2008; 43:439-46. [DOI: 10.1097/rli.0b013e3181690111] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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