[Computed tomographical evaluation of diabetic nephropathy]

Area of Science:

• Nephrology
• Diabetology
• Radiology

Background:

• Diabetic nephropathy is primarily microangiopathic but can involve macroangiopathy, especially in non-insulin dependent diabetes mellitus (NIDDM).
• NIDDM-related renal disease combines diabetic glomerulosclerosis with atherosclerosis.
• Macrovascular complications are a significant concern in diabetic kidney disease.

Purpose of the Study:

• To investigate the prevalence and significance of macroangiopathic changes in the kidneys of NIDDM patients.
• To compare the frequency of specific renal macroangiopathic findings between NIDDM and insulin-dependent diabetes mellitus (IDDM) patients.
• To assess the association of these findings with renal function and other comorbidities.

Main Methods:

• Morphological kidney studies using computed tomography (CT).
• Evaluation of abdominal aortic calcifications at kidney level.
• Assessment of renal artery calcifications and wedge-shaped renal surface defects.

Main Results:

• Macroangiopathic findings (aortic calcification, renal artery calcification, renal defects) were more prominent in NIDDM patients with end-stage renal failure.
• These findings were significantly more common in NIDDM patients compared to age-matched non-diabetic individuals without hypertension, hyperlipidemia, or gout.
• NIDDM patients exhibited these macroangiopathic features more frequently than IDDM patients.

Conclusions:

• Macroangiopathy, including atherosclerosis, plays a significant role in renal disease progression in NIDDM.
• CT-based morphological assessment can identify key macroangiopathic changes in the diabetic kidney.
• NIDDM is associated with a higher burden of renal macrovascular complications compared to IDDM.