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Uluer ET, Vatansever HS, Aydede H, Ozbilgin MK. Keratinocytes derived from embryonic stem cells induce wound healing in mice. Biotech Histochem 2018; 94:189-198. [PMID: 30460873 DOI: 10.1080/10520295.2018.1541479] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The skin plays an important role in defending the body against the environment. Treatments for burns and skin injuries that use autologous or allogenic skin grafts derived from adult or embryonic stem cells are promising. Embryonic stem cells are candidates for regenerative and reparative medicine. We investigated the utility of keratinocyte-like cells, which are differentiated from mouse embryonic stem cells, for wound healing using a mouse surgical wound model. Mice were allocated to the following groups: experimental, in which dressing and differentiated cells were applied after the surgical wound was created; control, in which only the surgical wound was created; sham, in which only the dressing was applied after the surgical wound was created; and untreated animal controls with healthy skin. Biopsies were taken from each group on days 3, 5 and 7 after cell transfer. Samples were fixed in formalin, then stained with Masson's trichrome and primary antibodies to interleukin-8 (IL-8), fibroblast growth factor-2 (FGF-2), monocyte chemoattractant protein-1 (MCP-1), collagen-1 and epidermal growth factor (EGF) using the indirect immunoperoxidase technique for light microscopy. Wound healing was faster in the experimental group compared to the sham and control groups. The experimental group exhibited increased expression of IL-8, FGF-2 and MCP-1 during early stages of wound healing (inflammation) and collagen-1 and EGF expression during late stages of wound healing (proliferation and remodeling). Keratinocytes derived from embryonic stem cells improved wound healing and influenced the wound healing stages.
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Affiliation(s)
- E T Uluer
- a Departments of Histology and Embryology, Faculty of Medicine , Manisa Celal Bayar University , Manisa , Turkey
| | - H S Vatansever
- a Departments of Histology and Embryology, Faculty of Medicine , Manisa Celal Bayar University , Manisa , Turkey
| | - H Aydede
- b Departments of General Surgery, Faculty of Medicine , Manisa Celal Bayar University , Manisa , Turkey
| | - M K Ozbilgin
- a Departments of Histology and Embryology, Faculty of Medicine , Manisa Celal Bayar University , Manisa , Turkey
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Payne CJ, Wamala I, Bautista-Salinas D, Saeed M, Van Story D, Thalhofer T, Horvath MA, Abah C, Del Nido PJ, Walsh CJ, Vasilyev NV. Soft robotic ventricular assist device with septal bracing for therapy of heart failure. Sci Robot 2017; 2:2/12/eaan6736. [PMID: 33157903 DOI: 10.1126/scirobotics.aan6736] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 10/30/2017] [Indexed: 01/25/2023]
Abstract
Previous soft robotic ventricular assist devices have generally targeted biventricular heart failure and have not engaged the interventricular septum that plays a critical role in blood ejection from the ventricle. We propose implantable soft robotic devices to augment cardiac function in isolated left or right heart failure by applying rhythmic loading to either ventricle. Our devices anchor to the interventricular septum and apply forces to the free wall of the ventricle to cause approximation of the septum and free wall in systole and assist with recoil in diastole. Physiological sensing of the native hemodynamics enables organ-in-the-loop control of these robotic implants for fully autonomous augmentation of heart function. The devices are implanted on the beating heart under echocardiography guidance. We demonstrate the concept on both the right and the left ventricles through in vivo studies in a porcine model. Different heart failure models were used to demonstrate device function across a spectrum of hemodynamic conditions associated with right and left heart failure. These acute in vivo studies demonstrate recovery of blood flow and pressure from the baseline heart failure conditions. Significant reductions in diastolic ventricle pressure were also observed, demonstrating improved filling of the ventricles during diastole, which enables sustainable cardiac output.
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Affiliation(s)
- Christopher J Payne
- Wyss Institute for Biologically Inspired Engineering, 3 Blackfan Circle, Longwood, Boston, MA 02115, USA.,Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, MA 02138, USA
| | - Isaac Wamala
- Department of Cardiac Surgery, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA 02115, USA.,Department of Cardiovascular Surgery, Deutsches Herzzentrum Berlin, Berlin, Germany
| | - Daniel Bautista-Salinas
- Department of Cardiac Surgery, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA 02115, USA
| | - Mossab Saeed
- Department of Cardiac Surgery, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA 02115, USA
| | - David Van Story
- Wyss Institute for Biologically Inspired Engineering, 3 Blackfan Circle, Longwood, Boston, MA 02115, USA.,Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, MA 02138, USA.,Department of Cardiac Surgery, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA 02115, USA
| | - Thomas Thalhofer
- Wyss Institute for Biologically Inspired Engineering, 3 Blackfan Circle, Longwood, Boston, MA 02115, USA.,Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, MA 02138, USA.,Department of Mechanical Engineering, Technical University of Munich, Munich, Germany
| | - Markus A Horvath
- Wyss Institute for Biologically Inspired Engineering, 3 Blackfan Circle, Longwood, Boston, MA 02115, USA.,Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, MA 02138, USA.,Harvard-MIT Health Sciences and Technology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - Colette Abah
- Wyss Institute for Biologically Inspired Engineering, 3 Blackfan Circle, Longwood, Boston, MA 02115, USA.,Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, MA 02138, USA
| | - Pedro J Del Nido
- Department of Cardiac Surgery, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA 02115, USA
| | - Conor J Walsh
- Wyss Institute for Biologically Inspired Engineering, 3 Blackfan Circle, Longwood, Boston, MA 02115, USA. .,Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, MA 02138, USA
| | - Nikolay V Vasilyev
- Department of Cardiac Surgery, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA 02115, USA.
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