Teratogenic evaluation of metronidazole and ornidazole using Drosophila melanogaster as an experimental model
Article first published online: 2 APR 2004
Copyright © 2004 Wiley-Liss, Inc.
Birth Defects Research Part A: Clinical and Molecular Teratology
Volume 70, Issue 4, pages 157–162, April 2004
How to Cite
Palermo, A. M., Reynoso, A.S., López Nigro, M., Carballo, M.A. and Mudry, M.D. (2004), Teratogenic evaluation of metronidazole and ornidazole using Drosophila melanogaster as an experimental model. Birth Defects Research Part A: Clinical and Molecular Teratology, 70: 157–162. doi: 10.1002/bdra.20008
- Issue published online: 20 APR 2004
- Article first published online: 2 APR 2004
- Manuscript Accepted: 14 JAN 2004
- Manuscript Received: 9 SEP 2003
- PICT. Grant Number: 01629/1997-2000
- UBACyT. Grant Number: TB15/1998-2001
Drosophila and vertebrates show similarities that suggest that the mechanisms involved in the induction of developmental defects may be similar in both. Therefore, Drosophila has been proposed as a useful, rapid, and economical model in the preliminary screening for teratology studies. The objective of the present study was to investigate the effect of metronidazole (MTZ) and ornidazole (ONZ) on the developmental stages of Drosophila melanogaster.
Samarkand wild-type females were allowed to lay eggs for 24 hr in media containing MTZ or ONZ at concentrations of 0, 500, 1000, and 2000 μg/ml. When larvae completed their development, the emerging flies were counted and examined for morphological abnormalities.
After the analysis of 400–1000 flies for each concentration, ONZ-treated flies did not show an incidence of malformations above control values, although a significant high number of individuals with reduced body size was observed (p < 0.005, χ2 test). On the other hand, the 1000- and 2000-μg/ml MTZ-treated series presented higher frequencies of total abnormalities than did concurrent and historic controls (p < 0.05, χ2 test), indicating an MTZ effect during developmental morphogenesis.
These findings contribute to the characterization of both nitroimidazoles, which are widely used, especially in underdeveloped countries. At the same time, this Drosophila bioassay is sensitive enough to detect differential effects of MTZ and ONZ (abnormalities vs. growth effects), showing specificity and selectivity. Birth Defects Research (Part A), 2004. © 2004 Wiley-Liss, Inc.