Tracheal regeneration: Evidence of bone marrow mesenchymal stem cell involvement Agathe Seguin, MD, PhD, Sonia Baccari, MD, Muriel Holder-Espinasse, MD,

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Presentation transcript:

Tracheal regeneration: Evidence of bone marrow mesenchymal stem cell involvement Agathe Seguin, MD, PhD, Sonia Baccari, MD, Muriel Holder-Espinasse, MD, PhD, Patrick Bruneval, MD, Alain Carpentier, MD, Doris A. Taylor, PhD, Emmanuel Martinod, MD, PhD The Journal of Thoracic and Cardiovascular Surgery Volume 145, Issue 5, Pages 1297-1304.e2 (May 2013) DOI: 10.1016/j.jtcvs.2012.09.079 Copyright © 2013 The American Association for Thoracic Surgery Terms and Conditions

Figure 1 Perioperative view showing (A) stent insertion and (B) graft implantation. The Journal of Thoracic and Cardiovascular Surgery 2013 145, 1297-1304.e2DOI: (10.1016/j.jtcvs.2012.09.079) Copyright © 2013 The American Association for Thoracic Surgery Terms and Conditions

Figure 2 Macroscopic examination at 15 months after transplantation group showing moderate retraction and “rings” over the outer surface of graft. The Journal of Thoracic and Cardiovascular Surgery 2013 145, 1297-1304.e2DOI: (10.1016/j.jtcvs.2012.09.079) Copyright © 2013 The American Association for Thoracic Surgery Terms and Conditions

Figure 3 Graft at 3 months from injection group. A, Hematoxylin-eosin-saffron stain (original magnification ×10) showing anastomosis localization with epithelial regeneration and new cartilage in formation. B, Orcein stain (original magnification ×10) showing elastic fibers within the cartilage island. The Journal of Thoracic and Cardiovascular Surgery 2013 145, 1297-1304.e2DOI: (10.1016/j.jtcvs.2012.09.079) Copyright © 2013 The American Association for Thoracic Surgery Terms and Conditions

Figure 4 Hybridization in situ for the RNA of green fluorescent protein (GFP) for the transplanted and injected groups showing positive detection within the graft and inside the new cartilage. Left, Sense probe detection; right, antisense probe detection. A, Graft at day 21 from transplantation (original magnification ×5) showing GFP-positive cells clearly through the epithelial layer (arrows) and at lower levels inside the graft, decreasing with depth. B, Graft at 1.5 months from injection (original magnification ×10) showing GFP-positive cells through the connective tissue in graft depth under the epithelial layer. C, Graft at 6 months from injection (original magnification ×10) showing GFP-positive cells in the active border (arrows) of recipient cartilage (asterisk) near the anastomosis. D, Graft at 9 months from injection (original magnification ×10) showing GFP-positive cells in the active border (arrows) of cartilage of recipient cartilage (asterisk) near the anastomosis. E, Graft at 15 months from injection (original magnification ×10) showing GFP-positive cells clearly through the epithelial layer (arrows) and at lower levels inside the graft, decreasing with depth near cartilage (asterisk). The Journal of Thoracic and Cardiovascular Surgery 2013 145, 1297-1304.e2DOI: (10.1016/j.jtcvs.2012.09.079) Copyright © 2013 The American Association for Thoracic Surgery Terms and Conditions

Figure 5 Hybridization in situ for the Y chromosome for graft at Left, 6 and Right, 9 months from injection (group 2; original magnification ×10). Positive epithelial cells for the Y chromosome (arrows) can be clearly seen, as well as positive cells inside the graft. (Labeling appears as a small white spot inside each cell.) The Journal of Thoracic and Cardiovascular Surgery 2013 145, 1297-1304.e2DOI: (10.1016/j.jtcvs.2012.09.079) Copyright © 2013 The American Association for Thoracic Surgery Terms and Conditions

Figure E1 Macroscopic examination at 3 months for control group showing moderate retraction and integrated graft. Arrows indicate graft limits. The Journal of Thoracic and Cardiovascular Surgery 2013 145, 1297-1304.e2DOI: (10.1016/j.jtcvs.2012.09.079) Copyright © 2013 The American Association for Thoracic Surgery Terms and Conditions

Figure E2 Macroscopic examination at 15 months from injection showing moderate retraction and integrated graft. Arrows indicate graft limits. The Journal of Thoracic and Cardiovascular Surgery 2013 145, 1297-1304.e2DOI: (10.1016/j.jtcvs.2012.09.079) Copyright © 2013 The American Association for Thoracic Surgery Terms and Conditions

Figure E3 Graft at 3 months for control group. A, Hematoxylin-eosin-saffron stain (original magnification ×10). Epithelial regeneration (arrows) with elastic fibers present in the deep part of graft. B, Orcein stain (original magnification ×10) for elastic fiber detection (asterisk). The Journal of Thoracic and Cardiovascular Surgery 2013 145, 1297-1304.e2DOI: (10.1016/j.jtcvs.2012.09.079) Copyright © 2013 The American Association for Thoracic Surgery Terms and Conditions

Figure E4 Graft at 12 months for control group showing ciliated epithelial regeneration (hematoxylin-eosin-saffron stain, original magnification ×40). The Journal of Thoracic and Cardiovascular Surgery 2013 145, 1297-1304.e2DOI: (10.1016/j.jtcvs.2012.09.079) Copyright © 2013 The American Association for Thoracic Surgery Terms and Conditions

Figure E5 Hybridization in situ for RNA of green fluorescent protein (GFP) for the transplanted and injected group showing positive detection within the graft and inside new cartilage. Left, Sense probe detection; right, antisense probe detection. A, Graft at 1.5 months from injection (original magnification ×20) showing GFP-positive cells through the connective tissue in the graft depth under epithelial layer. B, Graft at 1.5 months from injection (original magnification ×20) showing GFP-positive cells in the active border (arrows) of recipient cartilage (asterisk). The Journal of Thoracic and Cardiovascular Surgery 2013 145, 1297-1304.e2DOI: (10.1016/j.jtcvs.2012.09.079) Copyright © 2013 The American Association for Thoracic Surgery Terms and Conditions

Figure E6 Hybridization in situ for the Y chromosome for graft at 6 months from injection (group 2; original magnification ×40). Positive epithelial cells for the Y chromosome (arrow) and positive cells inside the graft can be clearly seen. (Labeling appears as a small white spot inside each cell.) The Journal of Thoracic and Cardiovascular Surgery 2013 145, 1297-1304.e2DOI: (10.1016/j.jtcvs.2012.09.079) Copyright © 2013 The American Association for Thoracic Surgery Terms and Conditions