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Could Transplantation into the Thyroid Gland Benefit Pancreatic Islet Grafting in Unstable Type 1 Diabetes (T1DM), Complicated Type 2 Diabetes (T2DM), and Patients with Total Pancreatectomy?

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Abstract

Background

Insular allograft for unstable type 1 diabetes and autograft in pancreatectomy patients are nowadays considered established procedures with precise indications and predictable outcomes. The clinical outcome of islet transplantation is similar to that of pancreas transplantation, avoiding the complications associated with organ transplantation.

Objective

We hypothesised that transplantation of islets of Langerhans within an endocrine organ could better promote their engraftment and function. This could help to resolve or ameliorate known pathological conditions such as unstable type 1 diabetes and complicated type 2 diabetes.

Rationale

Pancreatic islet transplantation is currently performed almost exclusively in the liver. The liver provides a sufficiently favourable environment, although not entirely. The hepatic parenchyma has a lower oxygen tension than the pancreatic parenchyma and the vascular structure of the liver is not typical of an exclusively endocrine organ. Moreover, islet transplantation into the liver is not without complications, including hematoma or portal vein thrombosis.

Proposed Project

The thyroid gland is the endocrine gland proposed as a ‘container’. In fact, it has all the characteristics of ‘physio-compatibility’ which can address the objectives assumed. It is indeed an ideal site because it is an easily accessible anatomical site that allows islets to be implanted using ultrasound-guided transcutaneous inoculation technique. Moreover, it has physiological and anatomical endocrine affinities with pancreatic islets and, if necessary, it can be removed, using hormone supplementation or replacement therapy.

Conclusions

The thyroid gland may be proposed as an ideal site for islet implantation due to its anatomical and physiocompatibility characteristics.

Graphical Abstract

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Data Availability

Our manuscript is a theory based article, thus no datasets were analyzed or generated during the course of the current study.

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All authors contributed to the study conception and design. The first draft of the manuscript was written by Lodovico Rosato. Eugenia Lavorini and Maurilio Deandrea critically revised the work. All authors read and approved the final manuscript.

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Correspondence to Eugenia Lavorini.

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Rosato, L., Lavorini, E. & Deandrea, M. Could Transplantation into the Thyroid Gland Benefit Pancreatic Islet Grafting in Unstable Type 1 Diabetes (T1DM), Complicated Type 2 Diabetes (T2DM), and Patients with Total Pancreatectomy?. Stem Cell Rev and Rep 20, 839–844 (2024). https://doi.org/10.1007/s12015-023-10671-6

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