1
|
Hashimoto K, Kim H, Oishi H, Chen M, Iskender I, Sakamoto J, Ohsumi A, Guan Z, Hwang D, Waddell TK, Cypel M, Liu M, Keshavjee S. Annexin V homodimer protects against ischemia reperfusion-induced acute lung injury in lung transplantation. J Thorac Cardiovasc Surg 2015; 151:861-869. [PMID: 26725713 DOI: 10.1016/j.jtcvs.2015.10.112] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 10/01/2015] [Accepted: 10/18/2015] [Indexed: 12/15/2022]
Abstract
OBJECTIVE We hypothesized that administration of a homodimer of recombinant annexin V, diannexin, could shield phosphatidylserine on the endothelium, and inhibit leukocyte and platelet adhesion, thereby potentially reducing ischemia reperfusion injury (IRI) in lung transplantation. This hypothesis was tested using a rat syngeneic single left-lung transplant model. METHODS Rats were randomly assigned to receive diannexin (DN group; n = 10) or normal saline (control group; n = 10). Diannexin (1000 μg/kg) was administered to the donor lung in the pulmonary flush solution, and to the recipient intravenously, 5 minutes after initiation of reperfusion. Grafts were reperfused for 2 hours. RESULTS The transplanted grafts in the DN group performed significantly better in gas exchange with higher partial pressure of oxygen (control group: 179 ± 121 vs DN group: 330 ± 54 mm Hg; P = .007) and lower partial pressure of carbon dioxide (control: 55.1 ± 26 vs DN: 34.2 ± 11 mm Hg; P = .04), as well as lower peak airway pressure (control: 20.5 ± 8.5 vs DN: 12.0 ± 7.9 cm H2O; P = .035) after 2 hours of reperfusion. Wet-to-dry lung weight ratio (P = .054), and alveolar fibrin deposition score (P = .04), were reduced in the DN group. Caspase-cleaved cytokeratin 18 in plasma (a marker of epithelial apoptosis) was significantly reduced in the DN group (P = .013). Furthermore, gene-expression levels of proinflammatory cytokines in the transplanted graft, including interleukin-6 (P = .04) and macrophage inflammatory protein 2 (P = .03) were significantly decreased in the DN group. CONCLUSIONS A homodimer of recombinant annexin V reduced ischemia reperfusion injury in a lung transplant animal model, by reducing cell death and tissue inflammation.
Collapse
Affiliation(s)
- Kohei Hashimoto
- Latner Thoracic Surgery Research Laboratories, Division of Thoracic Surgery, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Hyunhee Kim
- Latner Thoracic Surgery Research Laboratories, Division of Thoracic Surgery, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Hisashi Oishi
- Latner Thoracic Surgery Research Laboratories, Division of Thoracic Surgery, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Manyin Chen
- Latner Thoracic Surgery Research Laboratories, Division of Thoracic Surgery, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Ilker Iskender
- Latner Thoracic Surgery Research Laboratories, Division of Thoracic Surgery, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Jin Sakamoto
- Latner Thoracic Surgery Research Laboratories, Division of Thoracic Surgery, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Akihiro Ohsumi
- Latner Thoracic Surgery Research Laboratories, Division of Thoracic Surgery, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Zehong Guan
- Latner Thoracic Surgery Research Laboratories, Division of Thoracic Surgery, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - David Hwang
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Thomas K Waddell
- Latner Thoracic Surgery Research Laboratories, Division of Thoracic Surgery, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Marcelo Cypel
- Latner Thoracic Surgery Research Laboratories, Division of Thoracic Surgery, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Mingyao Liu
- Latner Thoracic Surgery Research Laboratories, Division of Thoracic Surgery, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Shaf Keshavjee
- Latner Thoracic Surgery Research Laboratories, Division of Thoracic Surgery, University Health Network, University of Toronto, Toronto, Ontario, Canada.
| |
Collapse
|