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Morphological changes in the rat kidney following long-term diabetes
E N Obineche1, E Mensah-Brown, S I Chandranath
1Department of Internal Medicine, Faculty of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates.
Archives of Physiology and Biochemistry
|March 7, 2002
Summary
Diabetic nephropathy involves kidney damage, including tubular destruction and podocyte injury, even as renal hypertrophy persists. These morphological changes contribute to the clinical presentation of the disease.
Area of Science:
- Nephrology
- Pathology
- Diabetology
Background:
- Diabetic nephropathy is a common complication of diabetes mellitus.
- Understanding its morphological basis is crucial for effective management.
Purpose of the Study:
- To investigate the morphological changes in the kidneys of diabetic rats using light and electron microscopy.
- To correlate these changes with the progression of diabetic nephropathy.
Main Methods:
- Streptozotocin-induced diabetic rat model.
- Light and electron microscopy examination of kidney tissues at 4 weeks and 8 months post-induction.
- Assessment of renal hypertrophy via kidney weight.
Main Results:
- Renal hypertrophy observed, with kidneys 30% larger after 8 months.
- Light microscopy revealed dilated tubules and distal convoluted tubule destruction.
- Electron microscopy showed basement membrane thickening, podocyte foot process effacement, and tubular fibrosis.
Conclusions:
- Renal hypertrophy persists in prolonged diabetes.
- Extensive renal tissue damage, including podocyte injury, contributes to diabetic nephropathy's clinical manifestations.