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Adverse effect of indomethacin in experimental chronic nephrosis
Abstract:
The effects of long-term indomethacin therapy were studied in rats with chronic nephrosis induced by puromycin of aminonucleoside (PAN). Fifteen PAN rats received indomethacin (2 mg/kg/d) administered by daily gavages, and fifteen received glucose. A control group received indomethacin but no PAN. Three to five animals per group were sacrificed monthly. Proteinuria was similar in both PAN rat groups. Renal function and histology were normal in the control rats. In the PAN animals, renal failure developed earlier in the treated rats than in the others. Histological examination revealed in all PAN rats early tubulo-interstitial lesions and progressive glomerular damage. The pattern of the lesions was identical in both PAN rats, but the glomerular changes developed earlier, were more diffuse and more severe in the indomethacin treated rats. Thus, indomethacin resulted in an accelerated destruction of the glomeruli in experimental nephrosis. Such a deleterious effect remains unexplained, and its relevance to human disease is not demonstrated.
Insights
Long-term indomethacin therapy accelerated kidney damage in rats with puromycin aminonucleoside (PAN) induced nephrosis. This study highlights indomethacin's potential to worsen experimental kidney disease, though human relevance is unproven.
Area of Science:
- Nephrology
- Pharmacology
- Toxicology
Background:
- Chronic kidney disease (CKD) poses a significant health burden.
- Puromycin aminonucleoside (PAN) is a common model for inducing experimental nephrosis in rats.
- Nonsteroidal anti-inflammatory drugs (NSAIDs) like indomethacin are widely used but can affect kidney function.
Purpose of the Study:
- To investigate the long-term effects of indomethacin on experimental chronic nephrosis induced by PAN in rats.
- To determine if indomethacin exacerbates glomerular and tubulo-interstitial damage in this model.
Main Methods:
- Induction of chronic nephrosis in rats using puromycin aminonucleoside (PAN).
- Administration of indomethacin (2 mg/kg/d) or glucose to PAN-induced nephrotic rats.
- Inclusion of a control group receiving indomethacin without PAN.
- Monthly assessment of renal function, proteinuria, and histological examination of kidney tissues.
Main Results:
- Proteinuria levels were comparable between indomethacin-treated and control PAN rats.
- Renal function and histology remained normal in control rats receiving indomethacin without PAN.
- PAN rats treated with indomethacin exhibited earlier onset of renal failure compared to untreated PAN rats.
- Histological analysis revealed accelerated, more diffuse, and severe glomerular damage in indomethacin-treated PAN rats, alongside tubulo-interstitial lesions.
Conclusions:
- Indomethacin therapy accelerates glomerular destruction in experimental nephrosis.
- The mechanism underlying this deleterious effect of indomethacin in experimental nephrosis is currently unexplained.
- The direct relevance of these findings to human kidney disease requires further investigation.