Construction of a bioengineered cardiac graft

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Presentation transcript:

Construction of a bioengineered cardiac graft Ren-Ke Li, MD, PhD, Terrence M. Yau, MD, MSc, Richard D. Weisel, MD, Donald A.G. Mickle, MD, Tetsuro Sakai, MD, Angel Choi, MSc, Zhi-Qiang Jia, MD The Journal of Thoracic and Cardiovascular Surgery Volume 119, Issue 2, Pages 368-375 (February 2000) DOI: 10.1016/S0022-5223(00)70193-0 Copyright © 2000 Mosby, Inc. Terms and Conditions

Fig. 1 Growth curves of varying cell types after seeding onto a Gelfoam matrix and maintenance in tissue culture: fetal rat cardiomyocytes (A) , fetal rat gastric smooth muscle cells (B) , fetal rat skin fibroblasts (C) , adult human atrial cardiomyocytes (D) , and adult human ventricular cardiomyocytes (E) . All cell types proliferated after seeding into the Gelfoam matrix except for the adult human ventricular cardiomyocytes, which survived but did not increase in number. Fetal rat cells proliferated more rapidly than adult human atrial cardiomyocytes. The Journal of Thoracic and Cardiovascular Surgery 2000 119, 368-375DOI: (10.1016/S0022-5223(00)70193-0) Copyright © 2000 Mosby, Inc. Terms and Conditions

Fig. 2 A gelatin mesh (G) 2 weeks after injection of fetal rat ventricular cardiomyocytes into the center of the mesh. The cardiomyocytes (C) had migrated to the uppermost surface of the mesh to form a layer approximately 300 μm thick. (Hematoxylin and eosin stain; original magnification 100×.) The Journal of Thoracic and Cardiovascular Surgery 2000 119, 368-375DOI: (10.1016/S0022-5223(00)70193-0) Copyright © 2000 Mosby, Inc. Terms and Conditions

Fig. 3 A gelatin mesh (G) 2 weeks after injection of fetal rat stomach smooth muscle cells into the center of the mesh. The smooth muscle cells (C) had migrated to the uppermost surface of the mesh, forming a layer approximately 300 μm in thickness. (Hematoxylin and eosin stain; original magnification 200×.) The Journal of Thoracic and Cardiovascular Surgery 2000 119, 368-375DOI: (10.1016/S0022-5223(00)70193-0) Copyright © 2000 Mosby, Inc. Terms and Conditions

Fig. 4 A gelatin mesh (G) 2 weeks after injection of a suspension of fetal rat skin fibroblasts into the center of the mesh. The fibroblasts (C) had formed a layer approximately 500 μm thick on the upper surface of the patch, in which were noted several hair follicles (arrows). (Hematoxylin and eosin stain, original magnification 100×.) The Journal of Thoracic and Cardiovascular Surgery 2000 119, 368-375DOI: (10.1016/S0022-5223(00)70193-0) Copyright © 2000 Mosby, Inc. Terms and Conditions

Fig. 5 Gelatin mesh grafts that had been stacked together after seeding of one surface on each graft with fetal rat ventricular cardiomyocytes and maintenance in tissue culture for 1 week. The cells occupied the full thickness of the topmost gelatin mesh, but only scattered cells were noted in the second and third meshes below. (Hematoxylin and eosin stain, original magnification 100×.) The Journal of Thoracic and Cardiovascular Surgery 2000 119, 368-375DOI: (10.1016/S0022-5223(00)70193-0) Copyright © 2000 Mosby, Inc. Terms and Conditions