<abstract xmlns="http://www.w3.org/1999/xhtml">

 The cytotoxic potential of fluoroquinolones (enrofloxacin, ciprofloxacin, difloxacin, sarafloxacin, danofloxacin, norfloxacin and marbofloxacin) was investigated using mouse fibroblasts Balb/c 3T3 and human hepatoma HepG2 cell lines. The cells were exposed for 24, 48, and 72 h to drugs at eight concentrations ranged from 0.78 to 100 μg/mL. Four independent cytotoxicity assays were applied, in which various endpoints were assessed: mitochondrial activity - MTT reduction, lysosomal activity - neutral red uptake, total protein content, and cellular membrane integrity - lactate dehydrogenase release. Mean effective cytotoxic concentrations (EC50) calculated at different time points from concentration-response curves ranged from 10 to 100 μg/mL. The most affected endpoint in both cell lines was mitochondrial activity. The EC50-MTT-72 h &lt;10 μg/mL was found for difloxacin, marbofloxacin (fibroblasts), sarafloxacin, and norfloxacin (HepG2). The data shows that cytotoxicity of the fluoroquinolones appears after longer exposure of both cell cultures to these compounds.
</abstract>

The cytotoxic potential of fluoroquinolones (enrofloxacin, ciprofloxacin, difloxacin, sarafloxacin, danofloxacin, norfloxacin and marbofloxacin) was investigated using mouse fibroblasts Balb/c 3T3 and human hepatoma HepG2 cell lines. The cells were exposed for 24, 48, and 72 h to drugs at eight concentrations ranged from 0.78 to 100 μg/mL. Four independent cytotoxicity assays were applied, in which various endpoints were assessed: mitochondrial activity - MTT reduction, lysosomal activity - neutral red uptake, total protein content, and cellular membrane integrity - lactate dehydrogenase release. Mean effective cytotoxic concentrations (EC50) calculated at different time points from concentration-response curves ranged from 10 to 100 μg/mL. The most affected endpoint in both cell lines was mitochondrial activity. The EC50-MTT-72 h <10 μg/mL was found for difloxacin, marbofloxacin (fibroblasts), sarafloxacin, and norfloxacin (HepG2). The data shows that cytotoxicity of the fluoroquinolones appears after longer exposure of both cell cultures to these compounds.

Influence of fluoroquinolones on viability of Balb/c 3T3 and HepG2 cells

Department of Pharmacology and Toxicology

Journal of Veterinary Research

{"article-title":"Influence of fluoroquinolones on viability of Balb/c 3T3 and HepG2 cells"}

The cytotoxic potential of fluoroquinolones (enrofloxacin, ciprofloxacin, difloxacin, sarafloxacin, danofloxacin, norfloxacin and marbofloxacin) was...

Influence of fluoroquinolones on viability of Balb/c 3T3 and HepG2 cells

Published Online: Dec 31, 2013

Page range: 599 - 606

DOI: https://doi.org/10.2478/bvip-2013-0102

This content is open access.