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Hyperinsulinemia and hyperfiltration in renal transplantation
Esteban Porrini1, Beatriz Bayes, Juan M Diaz
1Research Unit, Hospital Universitario de Canarias, La Laguna, Spain.
Transplantation
|January 22, 2009
Summary
Persistent hyperinsulinemia in kidney transplant patients without diabetes is linked to increased creatinine clearance, potentially indicating future renal dysfunction. This suggests hyperinsulinemia may be a target for intervention to preserve kidney health post-transplant.
Area of Science:
- Nephrology
- Endocrinology
- Transplantation Medicine
Background:
- Insulin resistance and hyperinsulinemia are emerging risk factors for kidney disease.
- Glomerular hyperfiltration is a proposed early indicator of hyperinsulinemia's impact on the kidneys.
Purpose of the Study:
- To investigate the association between persistent hyperinsulinemia and changes in kidney function in non-diabetic kidney transplant recipients.
- To determine if hyperinsulinemia is a risk factor for altered glomerular filtration in the early post-transplant period.
Main Methods:
- A multicenter cohort study involving 202 non-diabetic kidney transplant patients.
- Insulin levels were measured at 3 and 12 months post-transplant; patients were categorized by persistent normo- or hyperinsulinemia.
- Calculated creatinine clearance (CrCL) changes from 3 to 12 months were analyzed.
Main Results:
- Patients with persistent hyperinsulinemia exhibited a significant increase in CrCL (12%) compared to those with normoinsulinemia (-0.03%).
- Multivariate analysis confirmed persistent hyperinsulinemia as a risk factor for increased CrCL (beta 0.09, P=0.035).
Conclusions:
- Hyperinsulinemia is associated with increased creatinine clearance in non-diabetic kidney transplant recipients during the first year.
- Hyperinsulinemia may signal future renal dysfunction and warrants consideration as a therapeutic target in this patient population.
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