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Interaction between gentamicin and mycophenolate mofetil in experimentally induced pyelonephritis
H Malekinejad1, A Nikibakhsh, S Gholizadeh-Soltani
1Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran.
Abstract:
Acute pyelonephritis (APN) is an inflammatory disease that leads to kidney malfunction. The objective of this investigation was to evaluate the impact of gentamicin (GEN) and ceftriaxone (CEF) alone and in combination with mycophenolate mofetil (MMF) on experimentally induced APN. Forty two Wistar male rats were assigned into seven groups +APN, APN +GEN, APN+CEF, APN+MMF, APN+GEN+MMF and APN+CEF+MMF. APN was induced by injecting E. coli in the left kidney. The control and +APN groups were treated with normal saline while the other APN groups received GEN, CEF, or MMF alone and/or in combination for 2 weeks. The elevated total white blood cells count and increased level of creatinine and blood urea nitrogen (BUN) in +APN groups returned to normal levels following 14 days treatment with GEN and CEF. Co-administration of GEN with MMF could not recover the APN-induced changes and resulted in a significant (P < 0.05) elevation of creatinine and BUN levels. Histopathological studies supported the biochemical findings as GEN and CEF alone could partly restore the APN-induced degeneration and leukocytic infiltration; however, the combination therapy of GEN plus MMF failed to reduce the APN-induced damages. The antibacterial susceptibility test demonstrated that the strain of E. coli used in this study was susceptible to GEN and CEF and the combination therapy did not change the antibacterial potency. These findings suggest that co-administration of GEN with MMF in APN may enhance kidney damage and the adverse effects of combination therapeutic regimen could be related partly to incompatibility of these compounds.
Insights
Gentamicin and ceftriaxone effectively treat acute pyelonephritis (APN) in rats. However, combining gentamicin with mycophenolate mofetil worsened kidney function, suggesting potential compound incompatibility in APN treatment.
Area of Science:
- Nephrology
- Pharmacology
- Infectious Diseases
Background:
- Acute pyelonephritis (APN) is a serious kidney infection causing inflammation and potential malfunction.
- Effective antibiotic treatment is crucial for managing APN and preventing kidney damage.
Purpose of the Study:
- To assess the therapeutic effects of gentamicin (GEN) and ceftriaxone (CEF) alone and combined with mycophenolate mofetil (MMF) in an experimental APN model.
- To investigate potential adverse interactions between antibiotics and immunosuppressants in APN.
Main Methods:
- Acute pyelonephritis was induced in Wistar rats using E. coli injection.
- Rats were treated for two weeks with saline, GEN, CEF, MMF, or combinations (GEN+MMF, CEF+MMF).
- Kidney function was evaluated via blood counts, creatinine, BUN levels, and histopathology.
Main Results:
- GEN and CEF treatment normalized elevated white blood cells, creatinine, and BUN levels in APN rats.
- Co-administration of GEN with MMF significantly increased creatinine and BUN, indicating worsened kidney damage.
- Histopathology confirmed that GEN and CEF alone partially restored kidney tissue, while GEN+MMF combination therapy failed to reduce APN-induced damage.
Conclusions:
- Gentamicin and ceftriaxone are effective in treating experimental acute pyelonephritis.
- Combining gentamicin with mycophenolate mofetil may exacerbate kidney damage in APN, possibly due to compound incompatibility.
- Further research is needed to understand the adverse effects of combined therapeutic regimens in APN.
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