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Related Experiment Videos

Mutagenicity studies on dihydroergocristine.

F Dubini1, P Bignami, A Zanotti

  • 1Medical Microbiology Institute, University of Milan, Italy.

Drugs Under Experimental and Clinical Research
|January 1, 1990
PubMed
Summary

Dihydroergocristine (DHEC), an ergot derivative for cerebrovascular insufficiency, demonstrated no mutagenic activity in comprehensive in vitro and in vivo safety tests. This finding supports DHEC

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Area of Science:

  • Pharmacology
  • Toxicology
  • Genetics

Background:

  • Dihydroergocristine (DHEC) is an ergot derivative utilized in treating cerebrovascular insufficiency.
  • Assessing the mutagenic potential of pharmaceutical compounds is crucial for patient safety.

Purpose of the Study:

  • To evaluate the mutagenicity of Dihydroergocristine (DHEC) using a battery of in vitro and in vivo assays.
  • To determine if DHEC poses a genotoxic risk.

Main Methods:

  • In vitro mutagenicity testing in Salmonella typhimurium strains (Ames test) and V79 Chinese hamster cells.
  • In vitro chromosomal aberration assay in human lymphocyte cultures.
  • In vivo micronucleus assay in Swiss mice.
  • All assays were conducted with and without metabolic activation where applicable.

Main Results:

  • Dihydroergocristine (DHEC) showed no mutagenic activity in Salmonella typhimurium strains across tested concentrations.
  • DHEC did not induce gene mutations in V79 Chinese hamster cells or chromosomal damage in human lymphocytes.
  • The in vivo micronucleus assay in mice also yielded negative results for DHEC.

Conclusions:

  • Based on extensive in vitro and in vivo testing, Dihydroergocristine (DHEC) is considered free of mutagenic activity.
  • The safety profile of DHEC regarding genotoxicity is confirmed by these comprehensive assays.

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