A simple mouse model of pericardial adhesions
Abstract Background Postoperative pericardial adhesions are considered a risk factor for redo cardiac surgery. Several large- and medium-size animal models of pericardial adhesions have been reported, but small animal models for investigating the development of anti-adhesion materials and molecular...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2019-06-01
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| Series: | Journal of Cardiothoracic Surgery |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s13019-019-0940-9 |
| _version_ | 1818457503989497856 |
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| author | Ai Kojima Tomohisa Sakaue Mikio Okazaki Fumiaki Shikata Mie Kurata Yuuki Imai Hirotomo Nakaoka Junya Masumoto Shunji Uchita Hironori Izutani |
| author_facet | Ai Kojima Tomohisa Sakaue Mikio Okazaki Fumiaki Shikata Mie Kurata Yuuki Imai Hirotomo Nakaoka Junya Masumoto Shunji Uchita Hironori Izutani |
| author_sort | Ai Kojima |
| collection | DOAJ |
| description | Abstract Background Postoperative pericardial adhesions are considered a risk factor for redo cardiac surgery. Several large- and medium-size animal models of pericardial adhesions have been reported, but small animal models for investigating the development of anti-adhesion materials and molecular mechanisms of this condition are lacking. In this study, we aimed to establish a simple mouse model of pericardial adhesions to address this gap. Methods We administered blood, minocycline, picibanil, and talc into the murine pericardial cavity via one-shot injection. Micro-computed tomography analyses of contrast agent-injected mice were carried out for methodological evaluation. We investigated various dosages and treatment durations for molecules identified to be inducers of pericardial adhesion. The adhesive grade was quantified by scoring the strength and volume of adhesion tissues at sacrificed time points. Histological staining with hematoxylin and eosin and Masson’s trichrome, and immunostaining for F4/80 or αSMA was performed to investigate the structural features of pericardial adhesions, and pathological features of the pericardial adhesion tissue were compared with human clinical specimens. Results Administration of talc resulted in the most extensive pericardial adhesions. Micro-computed tomography imaging data confirmed that accurate injection into the pericardial cavity was achieved. We found the optimal condition for the formation of strong pericardial adhesions to be injection of 2.5 mg/g talc for 2 weeks. Furthermore, histological analysis showed that talc administration led to an invasion of myofibroblasts and macrophages in the pericardial cavity and epicardium, consistent with pathological findings in patients with left ventricular assistive devices. Conclusions We successfully established a simple mouse model of talc-induced pericardial adhesions, which mimics human pathology and could contribute to solving the clinical issues related to pericardial adhesions. |
| first_indexed | 2024-12-14T22:43:37Z |
| format | Article |
| id | doaj.art-1db9e558eeb54225886e044d8e365cb8 |
| institution | Directory Open Access Journal |
| issn | 1749-8090 |
| language | English |
| last_indexed | 2024-12-14T22:43:37Z |
| publishDate | 2019-06-01 |
| publisher | BMC |
| record_format | Article |
| series | Journal of Cardiothoracic Surgery |
| spelling | doaj.art-1db9e558eeb54225886e044d8e365cb82022-12-21T22:44:54ZengBMCJournal of Cardiothoracic Surgery1749-80902019-06-011411910.1186/s13019-019-0940-9A simple mouse model of pericardial adhesionsAi Kojima0Tomohisa Sakaue1Mikio Okazaki2Fumiaki Shikata3Mie Kurata4Yuuki Imai5Hirotomo Nakaoka6Junya Masumoto7Shunji Uchita8Hironori Izutani9Department of Cardiovascular and Thoracic Surgery, Ehime University Graduate School of MedicineDepartment of Cardiovascular and Thoracic Surgery, Ehime University Graduate School of MedicineDepartment of Thoracic, Breast and Endocrinological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesDepartment of Cardiovascular and Thoracic Surgery, Ehime University Graduate School of MedicineDepartment of Pathology, Division of Analytical Pathology, Ehime University Graduate School of MedicineDivision of Integrative Pathophysiology Proteo-Science Center, Ehime University Graduate School of MedicineDepartment of Cardiovascular and Thoracic Surgery, Ehime University Graduate School of MedicineDepartment of Pathology, Division of Analytical Pathology, Ehime University Graduate School of MedicineDepartment of Cardiovascular and Thoracic Surgery, Ehime University Graduate School of MedicineDepartment of Cardiovascular and Thoracic Surgery, Ehime University Graduate School of MedicineAbstract Background Postoperative pericardial adhesions are considered a risk factor for redo cardiac surgery. Several large- and medium-size animal models of pericardial adhesions have been reported, but small animal models for investigating the development of anti-adhesion materials and molecular mechanisms of this condition are lacking. In this study, we aimed to establish a simple mouse model of pericardial adhesions to address this gap. Methods We administered blood, minocycline, picibanil, and talc into the murine pericardial cavity via one-shot injection. Micro-computed tomography analyses of contrast agent-injected mice were carried out for methodological evaluation. We investigated various dosages and treatment durations for molecules identified to be inducers of pericardial adhesion. The adhesive grade was quantified by scoring the strength and volume of adhesion tissues at sacrificed time points. Histological staining with hematoxylin and eosin and Masson’s trichrome, and immunostaining for F4/80 or αSMA was performed to investigate the structural features of pericardial adhesions, and pathological features of the pericardial adhesion tissue were compared with human clinical specimens. Results Administration of talc resulted in the most extensive pericardial adhesions. Micro-computed tomography imaging data confirmed that accurate injection into the pericardial cavity was achieved. We found the optimal condition for the formation of strong pericardial adhesions to be injection of 2.5 mg/g talc for 2 weeks. Furthermore, histological analysis showed that talc administration led to an invasion of myofibroblasts and macrophages in the pericardial cavity and epicardium, consistent with pathological findings in patients with left ventricular assistive devices. Conclusions We successfully established a simple mouse model of talc-induced pericardial adhesions, which mimics human pathology and could contribute to solving the clinical issues related to pericardial adhesions.http://link.springer.com/article/10.1186/s13019-019-0940-9Pericardial adhesionsMouse modelTalc |
| spellingShingle | Ai Kojima Tomohisa Sakaue Mikio Okazaki Fumiaki Shikata Mie Kurata Yuuki Imai Hirotomo Nakaoka Junya Masumoto Shunji Uchita Hironori Izutani A simple mouse model of pericardial adhesions Journal of Cardiothoracic Surgery Pericardial adhesions Mouse model Talc |
| title | A simple mouse model of pericardial adhesions |
| title_full | A simple mouse model of pericardial adhesions |
| title_fullStr | A simple mouse model of pericardial adhesions |
| title_full_unstemmed | A simple mouse model of pericardial adhesions |
| title_short | A simple mouse model of pericardial adhesions |
| title_sort | simple mouse model of pericardial adhesions |
| topic | Pericardial adhesions Mouse model Talc |
| url | http://link.springer.com/article/10.1186/s13019-019-0940-9 |
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