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McDermott B, Robinson S, Holcombe S, Levey RE, Dockery P, Johnson P, Wang S, Dolan EB, Duffy GP. Developing a morphomics framework to optimize implant site-specific design parameters for islet macroencapsulation devices. J R Soc Interface 2021; 18:20210673. [PMID: 34932928 PMCID: PMC8692035 DOI: 10.1098/rsif.2021.0673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 11/22/2021] [Indexed: 12/22/2022] Open
Abstract
Delivering a clinically impactful cell number is a major design challenge for cell macroencapsulation devices for Type 1 diabetes. It is important to understand the transplant site anatomy to design a device that is practical and that can achieve a sufficient cell dose. We identify the posterior rectus sheath plane as a potential implant site as it is easily accessible, can facilitate longitudinal monitoring of transplants, and can provide nutritive support for cell survival. We have investigated this space using morphomics across a representative patient cohort (642 participants) and have analysed the data in terms of gender, age and BMI. We used a shape optimization process to maximize the volume and identified that elliptical devices achieve a clinically impactful cell dose while meeting device manufacture and delivery requirements. This morphomics framework has the potential to significantly influence the design of future macroencapsulation devices to better suit the needs of patients.
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Affiliation(s)
- Barry McDermott
- Translational Medical Device Lab, College of Medicine Nursing and Health Sciences, National University of Ireland (NUI) Galway, Galway, Ireland
| | - Scott Robinson
- Anatomy and Regenerative Medicine Institute (REMEDI), School of Medicine, College of Medicine Nursing and Health Sciences, National University of Ireland (NUI) Galway, Galway, Ireland
- Section of Vascular Surgery, Department of Surgery, University of Michigan, Ann Arbor, MI, USA
- Advanced Materials and BioEngineering Research Centre (AMBER), Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, Ireland
| | - Sven Holcombe
- Section of Vascular Surgery, Department of Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Ruth E. Levey
- Anatomy and Regenerative Medicine Institute (REMEDI), School of Medicine, College of Medicine Nursing and Health Sciences, National University of Ireland (NUI) Galway, Galway, Ireland
| | - Peter Dockery
- Anatomy and Regenerative Medicine Institute (REMEDI), School of Medicine, College of Medicine Nursing and Health Sciences, National University of Ireland (NUI) Galway, Galway, Ireland
| | - Paul Johnson
- Nuffield Department of Surgical Sciences and NIHR Biomedical Research Centre, Oxford Centre for Diabetes Endocrinology and Metabolism, University of Oxford, Oxford, UK
| | - Stewart Wang
- Section of Vascular Surgery, Department of Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Eimear B. Dolan
- Biomedical Engineering, School of Engineering, College of Science and Engineering, National University of Ireland (NUI) Galway, Galway, Ireland
- CURAM, Centre for Research in Medical Devices, National University of Ireland (NUI) Galway, Galway, Ireland
| | - Garry P. Duffy
- Anatomy and Regenerative Medicine Institute (REMEDI), School of Medicine, College of Medicine Nursing and Health Sciences, National University of Ireland (NUI) Galway, Galway, Ireland
- CURAM, Centre for Research in Medical Devices, National University of Ireland (NUI) Galway, Galway, Ireland
- Advanced Materials and BioEngineering Research Centre (AMBER), Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, Ireland
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