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Article Type

Original Study

Abstract

Objectives This work aimed to study chronic renal failure (CRF) in an adenine induced rat model using light microscopic, electron microscopic examinations in addition to morphometric studies. Past studies of adenine induced rat model of CRF did not emphasize on the electron microscopic changes that accompany CRF. Background Long term feeding of adenine to rats produced metabolic changes resembling chronic renal failure in humans. Among the changes happened were loss of weight and accumulation of uremic toxins (urea and creatinine). The pathological findings in the kidneys revealed glomerular and tubulo-interstitial damage. In the current work, we stressed on the changes that happen in the ultra-structural level. Methods Thirty adult male albino rats were divided into 2 groups: Group (I) ten rats, kept without any treatment, and sacrificed after 4 weeks. Group II (chronic renal failure induced group) twenty rats, received adenine powder daily (0.75% w/w for 4 weeks in food i.e., a daily adenine dose of 0.075 grams was added to 10 grams of food for each rat). Initial and final weights were recorded. Blood samples were collected for kidney function tests. Kidney sections were prepared for light and electron microscopic examination. Morphometric and statistical analysis were done. Results In comparison with the control group, the CRF induced group showed a significant decrease in their final body weight (P < 0.001), significant increase in the urea and creatinine levels (P < 0.001) and significant increase in collagen fiber surface area. Conclusion Long term feeding of adenine exerted a marked inflammatory, fibrotic and apoptotic accelerating effect on both the glomeruli and the tubules.

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