ID | 113053 |
Author |
Oishi, Hisashi
University Health Network
Martinu, Tereza
University Health Network
Hwang, David M.
University Health Network
Takizawa, Hiromitsu
University Health Network
Tokushima University Educator and Researcher Directory
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Sugihara, Junichi
University Health Network
McKee, Trevor D.
University Health Network
Bai, Xiaohui
University Health Network
Guana, Zehong
University Health Network
Lua, Christina
University Health Network
Cho, Hae-Ra
University Health Network
Juvet, Stephen
University Health Network
Cypel, Marcelo
University Health Network|University of Toronto
Keshavjee, Shaf
University Health Network|University of Toronto
Liu, Mingyao
University Health Network|University of Toronto
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Keywords | innate immunity
Micro-CT
bronchiolitis obliterans
lymphatic aggregates
Th1/Th2 response
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Content Type |
Journal Article
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Description | Chronic lung allograft dysfunction (CLAD) is a serious complication after lung transplantation and thought to represent chronic rejection. Increased expression of Pentraxin 3 (PTX3), an acute phase protein, was associated with worse outcome in lung transplant patients. To determine the role of recipient PTX3 in development of chronic rejection, we used a minor alloantigen-mismatched murine orthotopic single lung transplant model. Male C57BL/10 mice were used as donors. Male PTX3 knockout (KO) mice and their wild type (WT) littermates on 129/SvEv/C57BL6/J background were used as recipients. In KO recipients, 7/13 grafted lungs were consolidated without volume recovery on CT scan, while only 2/9 WT mice showed similar graft consolidation. For grafts where lung volume could be reliably analyzed by CT scan, the lung volume recovery was significantly reduced in KO mice compared to WT. Interstitial inflammation, parenchymal fibrosis and bronchiolitis obliterans scores were significantly higher in KO mice. Presence of myofibroblasts and lymphoid aggregation was significantly enhanced in the grafts of PTX3 KO recipients. Recipient PTX3 deficiency enhanced chronic rejection-like lesions by promoting a fibrotic process in the airways and lung parenchyma. The underlying mechanisms and potential protective role of exogenous PTX3 as a therapy should be further explored.
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Journal Title |
Oncotarget
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ISSN | 19492553
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Publisher | Impact Journals, LLC
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Volume | 9
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Issue | 9
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Start Page | 8489
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End Page | 8501
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Published Date | 2018-01-03
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Rights | Copyright: Yoshida et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License 3.0 (CC BY 3.0)(https://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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DOI (Published Version) | |
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language |
eng
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TextVersion |
Publisher
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departments |
University Hospital
Medical Sciences
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