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Related Experiment Videos

Age dependent differences in sodium dichromate nephrotoxicity in rats.

D Appenroth1, H Bräunlich

  • 1Institute of Pharmacology and Toxicology, Friedrich Schiller University, Jena, DDR.

Experimental Pathology
|January 1, 1988
PubMed
Summary

Sodium dichromate causes dose-dependent kidney damage in adult rats, initially affecting tubules and later glomeruli. Young rats exhibit significantly lower susceptibility to this nephrotoxic agent.

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Area of Science:

  • Toxicology
  • Renal Physiology
  • Biochemistry

Background:

  • Sodium dichromate is a known nephrotoxic agent.
  • Age-related differences in susceptibility to toxicants are common.
  • Understanding the specific mechanisms and patterns of renal injury is crucial for risk assessment.

Purpose of the Study:

  • To investigate the nephrotoxic effects of sodium dichromate in rats of different ages.
  • To characterize the dose-dependence and temporal progression of renal damage.
  • To identify the specific sites of injury within the nephron.

Main Methods:

  • Administration of sodium dichromate (1 or 2 mg/100 g body mass) subcutaneously to 10- and 55-day-old female Wistar rats.
  • Collection of urine for 1 hour post-injection at various time points.
  • Quantification of total urinary protein and specific protein fractions (high molecular weight, low molecular weight, albumin).

Main Results:

  • Adult rats showed dose-dependent nephrotoxicity, with varying extent and duration of renal damage.
  • Protein analysis indicated initial tubular damage, followed by glomerular disturbances at the peak of injury.
  • Young rats were markedly less susceptible to sodium dichromate-induced nephrotoxicity compared to adult rats.

Conclusions:

  • Sodium dichromate induces age-dependent nephrotoxicity in Wistar rats.
  • The pattern of injury progresses from tubular to glomerular damage.
  • Younger rats possess a higher resilience to sodium dichromate, suggesting developmental factors influence susceptibility.

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