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Ifosfamide metabolite chloroacetaldehyde causes Fanconi syndrome in the perfused rat kidney
- Source :
- Toxicology and applied pharmacology. 129(1)
- Publication Year :
- 1994
-
Abstract
- Renal proximal tubule dysfunction has been reported in patients treated with the chemotherapeutic agent ifosfamide. The present study investigated whether ifosfamide or its metabolites acrolein and chloroacetaldehyde would impair function in the isolated perfused rat kidney. Renal function was monitored before and after these chemicals were added to a modified Krebs-Ringer-bicarbonate perfusion medium containing 6.6 g/dl albumin and a mixture of substrates. No functional changes were observed when ifosfamide (470 microM) or acrolein (470 microM) was added to the perfusate. Addition of chloroacetaldehyde (210 microM) resulted in significant decreases in the fractional reabsorption of sodium (from 92 to 32%), glucose (from 97 to 46%), inorganic phosphate (from 88 to 22%), and inorganic sulfate (from 94 to 86%). There were no changes in glomerular filtration rate. PAH clearance also significantly decreased from 4.1 to 0.7 ml/min per gram of kidney weight, indicating impairment of proximal tubule organic acid secretion. This impairment was associated with a significant decline in the extraction ratio for PAH, suggesting abnormal PAH uptake at the basolateral membrane. These results show that chloroacetaldehyde causes generalized renal proximal tubule dysfunction and that it may be the ifosfamide metabolite responsible for nephrotoxic side effects.
- Subjects :
- Male
medicine.medical_specialty
Metabolite
Acetaldehyde
PAH clearance
Toxicology
Kidney
Nephrotoxicity
Absorption
Phosphates
Kidney Tubules, Proximal
chemistry.chemical_compound
Internal medicine
medicine
Chloroacetaldehyde
Animals
Prodrugs
Ifosfamide
Acrolein
Pharmacology
Reabsorption
Sulfates
Sodium
Fanconi syndrome
Organ Size
medicine.disease
Fanconi Syndrome
Rats
Disease Models, Animal
medicine.anatomical_structure
Endocrinology
Glucose
chemistry
Rats, Inbred Lew
Chemotherapy, Cancer, Regional Perfusion
medicine.drug
Subjects
Details
- ISSN :
- 0041008X
- Volume :
- 129
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Toxicology and applied pharmacology
- Accession number :
- edsair.doi.dedup.....cb6a34125cd494cc2b793a7ba82b1d98