Lifelong reversal of the metabolic abnormalities of advanced diabetes in rats by whole-pancreas transplantation

Area of Science:

• Endocrinology
• Transplantation Immunology
• Metabolic Surgery

Background:

• Metabolic abnormalities drive microvascular complications in insulin-dependent diabetes mellitus (IDDM).
• Pancreas transplantation offers potential for precise metabolic control, aiming to reverse IDDM complications.

Purpose of the Study:

• To evaluate the efficacy of whole pancreas transplantation in reversing established metabolic abnormalities in experimental diabetes mellitus (DM).
• To assess the long-term metabolic control achieved through pancreas transplantation compared to conventional therapies.

Main Methods:

• Monthly metabolic studies were conducted over 2 years in control and diabetic rats.
• Diabetic rats underwent syngeneic whole pancreaticoduodenal transplants at various time points post-diabetes induction.
• Key metabolic parameters including plasma glucose, insulin, BUN, serum creatinine, and body weight were monitored.

Main Results:

• Whole-pancreas transplantation permanently reversed metabolic disorders in rats with long-standing DM.
• Transplantation normalized plasma glucose, insulin levels, BUN, and serum creatinine, leading to significant weight gain.
• Hyperglucagonemia persisted but did not impede hyperglycemia control, with improved glucose tolerance tests due to elevated insulin.

Conclusions:

• Whole-pancreas transplantation provides the most comprehensive and sustained correction of experimental DM metabolic abnormalities.
• This therapeutic modality demonstrates significant potential for managing diabetes and its associated complications.