Quantitative and longitudinal imaging of intramuscular transplanted islets of Langerhans with SPECT using [ 123 I]IBZM
Publication year
2017Source
Diabetes, Obesity & Metabolism, 19, 4, (2017), pp. 604-608ISSN
Publication type
Article / Letter to editor
Display more detailsDisplay less details
Organization
Medical Imaging
Journal title
Diabetes, Obesity & Metabolism
Volume
vol. 19
Issue
iss. 4
Page start
p. 604
Page end
p. 608
Subject
Radboudumc 0: Other Research RIHS: Radboud Institute for Health Sciences; Radboudumc 14: Tumours of the digestive tract RIMLS: Radboud Institute for Molecular Life Sciences; Radboudumc 19: Nanomedicine RIMLS: Radboud Institute for Molecular Life Sciences; Medical Imaging - Radboud University Medical CenterAbstract
A non-invasive imaging method to monitor islet grafts could provide novel and improved insight into the fate of transplanted islets and, potentially, monitor the effect of therapeutic interventions. Therefore, such an imaging method could help improve long-term transplantation outcome. Here, we investigated the use of [ 123 I]IBZM for insulin positive graft volume quantification and longitudinal graft monitoring. SPECT images were acquired 6 weeks after islet transplantation in the calf muscle of rats. For longitudinal graft analysis, rats were monitored by SPECT for 10 weeks. After animals were euthanized, graft containing muscles were dissected for ex vivo analysis and insulin-positive graft volume determination. Six weeks after transplantation, a clear signal was observed in all grafts by SPECT imaging. Moreover, the intensity of the SPECT signal correlated linearly with insulin-positive graft volume, as determined histologically. Longitudinal graft follow-up showed a clear SPECT signal of the transplant from 3 until 10 weeks after transplantation. In this study, we demonstrate for the first time the successful application of a radiotracer, [ 123 I]IBZM, for non-invasive, in vivo graft volume quantification and longitudinal graft monitoring.
This item appears in the following Collection(s)
- Academic publications [245131]
- Faculty of Medical Sciences [93207]
Upload full text
Use your RU credentials (u/z-number and password) to log in with SURFconext to upload a file for processing by the repository team.