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Experimental pyelonephritis induced by L-forms of Proteus mirabilis in rats
Abstract:
Pyelonephritis was produced in 75 white rats by applying a 24-hour ligature on the ureter and by intravenous injection of a suspension of 5X10(9) cells of a stable Proteus mirabilis L-form. Pyelonephritis was proved microscopically in 44% of the animals. The revertants of the introduced L-form play an etiological role in the development of the infection. The stability of the pathohistological findings makes this model suitable for the purpose of experimental chemotherapy.
Insights
This study created pyelonephritis in rats using Proteus mirabilis L-forms. The findings suggest L-form revertants are key to infection, validating this model for chemotherapy research.
Area of Science:
- Microbiology
- Urology
- Experimental Pathology
Background:
- Pyelonephritis is a significant kidney infection.
- Understanding its pathogenesis is crucial for effective treatment.
- The role of bacterial L-forms in infection requires further elucidation.
Purpose of the Study:
- To establish a rat model of pyelonephritis using Proteus mirabilis L-forms.
- To investigate the etiological role of L-form revertants in pyelonephritis development.
- To assess the suitability of this model for experimental chemotherapy studies.
Main Methods:
- Induction of pyelonephritis in 75 white rats via ureteral ligation and intravenous injection of Proteus mirabilis L-form suspension.
- Microscopic examination for confirmation of pyelonephritis.
- Analysis of bacterial L-form revertants' role in infection.
Main Results:
- Pyelonephritis was successfully induced and microscopically confirmed in 44% of the experimental animals.
- Evidence suggests that revertants of the introduced Proteus mirabilis L-form are implicated in the infection's development.
- The induced pathohistological changes were stable, indicating a reliable model.
Conclusions:
- The established rat model effectively replicates pyelonephritis.
- Proteus mirabilis L-form revertants are identified as playing an etiological role.
- This stable pyelonephritis model is suitable for evaluating experimental chemotherapy efficacy.