Teratogenic Evaluation of Metronidazole and Ornidazole Using Drosophila melanogaster as an Experimental Model
BACKGROUND: 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. T...
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todo:paper_15420752_v70_n4_p157_Palermo2023-10-03T16:22:56Z Teratogenic Evaluation of Metronidazole and Ornidazole Using Drosophila melanogaster as an Experimental Model Palermo, A.M. Reynoso, A.S. López Nigro, M. Carballo, M.A. Mudry, M.D. metronidazole nitroimidazole derivative ornidazole animal cell animal experiment animal model animal tissue article bioassay concentration response controlled study developing country developmental biology developmental disorder Drosophila melanogaster evaluation experimental model female incidence larval development morphological trait newborn nonhuman priority journal regulatory mechanism screening test sensitivity analysis sensitivity and specificity teratogenicity toxicity testing vertebrate wild type Abdomen Abnormalities, Drug-Induced Animals Antiprotozoal Agents Drosophila melanogaster Larva Metronidazole Ornidazole Thorax Drosophila melanogaster Melanogaster Vertebrata BACKGROUND: 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 omidazole (ONZ) on the developmental stages of Drosophila melanogaster. METHODS: 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. RESULTS: 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. CONCLUSIONS: 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. © 2004 Wiley-Liss, Inc. Fil:Palermo, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mudry, M.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15420752_v70_n4_p157_Palermo |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
metronidazole nitroimidazole derivative ornidazole animal cell animal experiment animal model animal tissue article bioassay concentration response controlled study developing country developmental biology developmental disorder Drosophila melanogaster evaluation experimental model female incidence larval development morphological trait newborn nonhuman priority journal regulatory mechanism screening test sensitivity analysis sensitivity and specificity teratogenicity toxicity testing vertebrate wild type Abdomen Abnormalities, Drug-Induced Animals Antiprotozoal Agents Drosophila melanogaster Larva Metronidazole Ornidazole Thorax Drosophila melanogaster Melanogaster Vertebrata |
| spellingShingle |
metronidazole nitroimidazole derivative ornidazole animal cell animal experiment animal model animal tissue article bioassay concentration response controlled study developing country developmental biology developmental disorder Drosophila melanogaster evaluation experimental model female incidence larval development morphological trait newborn nonhuman priority journal regulatory mechanism screening test sensitivity analysis sensitivity and specificity teratogenicity toxicity testing vertebrate wild type Abdomen Abnormalities, Drug-Induced Animals Antiprotozoal Agents Drosophila melanogaster Larva Metronidazole Ornidazole Thorax Drosophila melanogaster Melanogaster Vertebrata Palermo, A.M. Reynoso, A.S. López Nigro, M. Carballo, M.A. Mudry, M.D. Teratogenic Evaluation of Metronidazole and Ornidazole Using Drosophila melanogaster as an Experimental Model |
| topic_facet |
metronidazole nitroimidazole derivative ornidazole animal cell animal experiment animal model animal tissue article bioassay concentration response controlled study developing country developmental biology developmental disorder Drosophila melanogaster evaluation experimental model female incidence larval development morphological trait newborn nonhuman priority journal regulatory mechanism screening test sensitivity analysis sensitivity and specificity teratogenicity toxicity testing vertebrate wild type Abdomen Abnormalities, Drug-Induced Animals Antiprotozoal Agents Drosophila melanogaster Larva Metronidazole Ornidazole Thorax Drosophila melanogaster Melanogaster Vertebrata |
| description |
BACKGROUND: 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 omidazole (ONZ) on the developmental stages of Drosophila melanogaster. METHODS: 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. RESULTS: 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. CONCLUSIONS: 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. © 2004 Wiley-Liss, Inc. |
| format |
JOUR |
| author |
Palermo, A.M. Reynoso, A.S. López Nigro, M. Carballo, M.A. Mudry, M.D. |
| author_facet |
Palermo, A.M. Reynoso, A.S. López Nigro, M. Carballo, M.A. Mudry, M.D. |
| author_sort |
Palermo, A.M. |
| title |
Teratogenic Evaluation of Metronidazole and Ornidazole Using Drosophila melanogaster as an Experimental Model |
| title_short |
Teratogenic Evaluation of Metronidazole and Ornidazole Using Drosophila melanogaster as an Experimental Model |
| title_full |
Teratogenic Evaluation of Metronidazole and Ornidazole Using Drosophila melanogaster as an Experimental Model |
| title_fullStr |
Teratogenic Evaluation of Metronidazole and Ornidazole Using Drosophila melanogaster as an Experimental Model |
| title_full_unstemmed |
Teratogenic Evaluation of Metronidazole and Ornidazole Using Drosophila melanogaster as an Experimental Model |
| title_sort |
teratogenic evaluation of metronidazole and ornidazole using drosophila melanogaster as an experimental model |
| url |
http://hdl.handle.net/20.500.12110/paper_15420752_v70_n4_p157_Palermo |
| work_keys_str_mv |
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1807318278145572864 |