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Erythrocyte spermidine levels in IDDM patients
G Seghieri1, A Gironi, P Mammini
1Diabetes Unit, Spedali Riuniti, Pistoia, Italy.
Diabetes Care
|April 1, 1992
Summary
Erythrocyte spermidine levels are elevated in patients with insulin-dependent diabetes mellitus (IDDM), particularly those with diabetic nephropathy and retinopathy. This finding suggests spermidine may be a biomarker for these diabetes complications.
Area of Science:
- Biochemistry
- Endocrinology
- Diabetology
Background:
- Insulin-dependent diabetes mellitus (IDDM) is a chronic condition associated with microvascular complications like retinopathy and nephropathy.
- Polyamines, including spermidine and spermine, play crucial roles in cellular processes.
- Alterations in polyamine levels may be linked to the pathogenesis of diabetic complications.
Purpose of the Study:
- To investigate erythrocyte polyamine levels (spermidine and spermine) in patients with IDDM.
- To determine if these polyamine levels are associated with the presence and severity of diabetic retinopathy and nephropathy.
Main Methods:
- Erythrocyte spermidine and spermine levels were measured in 38 IDDM patients and 60 age- and sex-matched control subjects.
- Patients were categorized based on the presence of microalbuminuria, macroalbuminuria, or retinopathy.
- Urinary albumin excretion rate (AER) was used to quantify nephropathy.
Main Results:
- Erythrocyte spermine levels were comparable between IDDM patients and controls.
- Erythrocyte spermidine levels were significantly higher in IDDM patients compared to controls (P = 0.0007).
- Elevated spermidine levels were observed in patients with microalbuminuria, macroalbuminuria, and proliferative retinopathy, and correlated with AER.
Conclusions:
- Erythrocyte spermidine content is increased in IDDM patients.
- Increased spermidine levels are associated with diabetic nephropathy and advanced retinopathy.
- Erythrocyte spermidine may serve as a potential biomarker for diabetic complications.