Pretreatment with bone marrow–derived mesenchymal stromal cell–conditioned media confers pulmonary ischemic tolerance Billanna Hwang, MPH, W. Conrad.

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Presentation transcript:

Pretreatment with bone marrow–derived mesenchymal stromal cell–conditioned media confers pulmonary ischemic tolerance Billanna Hwang, MPH, W. Conrad Liles, MD, PhD, Rachel Waworuntu, BS, Michael S. Mulligan, MD The Journal of Thoracic and Cardiovascular Surgery Volume 151, Issue 3, Pages 841-849 (March 2016) DOI: 10.1016/j.jtcvs.2015.11.043 Copyright © 2016 The American Association for Thoracic Surgery Terms and Conditions

Figure 1 Evaluation of lung injury. A, Vascular permeability measured by Evans blue dye in lung tissue. Groups were compared by Student t test. B, Proinflammatory cytokines IL-1β, tumor necrosis factor-α, and anti-inflammatory IL-10 were measured in BAL supernatant by enzyme-linked immunosorbent assay. Group comparisons were analyzed by Student t test. EBD, Evans blue dye; IR, ischemia–reperfusion. The Journal of Thoracic and Cardiovascular Surgery 2016 151, 841-849DOI: (10.1016/j.jtcvs.2015.11.043) Copyright © 2016 The American Association for Thoracic Surgery Terms and Conditions

Figure 2 Histopathologic assessment of lung injury. Hematoxylin–eosin-stained lung histology from representative animals. Lung sections were fixed in 4% paraformaldehyde, embedded in paraffin, and cut into 5-μm sections before staining. Pictures were taken using an Olympus BX51 microscope (Melville, NY) with a 20× objective. The Journal of Thoracic and Cardiovascular Surgery 2016 151, 841-849DOI: (10.1016/j.jtcvs.2015.11.043) Copyright © 2016 The American Association for Thoracic Surgery Terms and Conditions

Figure 3 Cellular responses after pretreatment with conditioned media. BAL differentials were analyzed in the control and experimental groups. Samples were assessed for total leukocytes (A), neutrophils (B), macrophages (C), and lymphocytes (D). Total BAL cell counts were performed using a hemocytometer. IR, Ischemia–reperfusion. The Journal of Thoracic and Cardiovascular Surgery 2016 151, 841-849DOI: (10.1016/j.jtcvs.2015.11.043) Copyright © 2016 The American Association for Thoracic Surgery Terms and Conditions

Figure 4 Immunomodulatory properties of MSC-CM. Immunohistochemistry stains were performed on lung biopsies taken from control and experimental groups. FoxP3, a marker for regulatory T cells, was assessed. Pictures were taken using an Olympus BX51 microscope at 20× and 40×. The Journal of Thoracic and Cardiovascular Surgery 2016 151, 841-849DOI: (10.1016/j.jtcvs.2015.11.043) Copyright © 2016 The American Association for Thoracic Surgery Terms and Conditions

MSC-CM confers pulmonary ischemic tolerance. The Journal of Thoracic and Cardiovascular Surgery 2016 151, 841-849DOI: (10.1016/j.jtcvs.2015.11.043) Copyright © 2016 The American Association for Thoracic Surgery Terms and Conditions