Exploratory real-time kinetic analysis of the cytotoxicity induced by maize silage mycotoxins in a calf intestinal epithelial cell line
- 14 October 2021
- journal article
- research article
- Published by Brill in World Mycotoxin Journal
- Vol. 14 (4), 513-523
- https://doi.org/10.3920/wmj2020.2651
Abstract
In a temperate climate, the mycotoxins deoxynivalenol (DON), nivalenol (NIV), enniatin B (ENN B), mycophenolic acid (MPA), roquefortine C (ROC) and zearalenone (ZEN) are often found in maize silage. Although rumen microbiota are able to degrade some mycotoxins (e.g. DON), others are known to stay mainly intact (e.g. ROC). In addition, mycotoxin degradation can be hampered by a low ruminal pH or decrease in rumen microbial activity. Hence, these mycotoxins can reach the small intestine and exert a cytotoxic effect on intestinal epithelial cells. In this study, a real-time kinetic analysis of the cytotoxicity of these six mycotoxins and some of their metabolites (α- and β-zearalenol, α- and β-ZOL) was performed in a calf small intestinal epithelial cell line (CIEB). Confluency as well as the cell death parameters apoptosis and necrosis were determined to evaluate the mycotoxin-induced cytotoxicity. A combination of Annexin-V green and Cytotox red staining was used to determine early and late apoptosis as well as necrosis. Six different concentrations were tested ranging from 0.78 to 12.5 μM. Compared to cells not exposed to mycotoxins, DON and NIV exert a fast toxic effect with DON being more toxic than NIV within the first hours of incubation, whereas the inverse was observed at 16 h of incubation. On the other hand, MPA and ZEN induced increased Annexin V green positive cells within several hours of incubation with higher toxicity over time. Increased Annexin V green and Cytotox red positive cells were seen for ROC only at the highest concentration tested. For ENN B, increased Annexin V green positive cells were observed only after 12 h and α- and β-ZOL did not show cytotoxic effects. Hence, mycotoxin exposure causes either severe (DON and NIV) or more limited (ZEN, ROC, MPA, and ENN B) risk of bovine intestinal epithelial damage.Keywords
This publication has 30 references indexed in Scilit:
- Lysosomes as a Possible Target of Enniatin B-Induced Toxicity in Caco-2 CellsChemical Research in Toxicology, 2012
- Enniatin B-induced cell death and inflammatory responses in RAW 267.4 murine macrophagesToxicology and Applied Pharmacology, 2012
- Cytotoxicity and metabolic stress induced by deoxynivalenol in the porcine intestinal IPEC-J2 cell lineJournal of Animal Physiology and Animal Nutrition, 2011
- Effects of the Fusarium mycotoxin deoxynivalenol on in vitro rumen fermentationAnimal Feed Science and Technology, 2010
- Enniatins A1, B and B1 from an endophytic strain of Fusarium tricinctum induce apoptotic cell death in H4IIE hepatoma cells accompanied by inhibition of ERK phosphorylationMolecular Nutrition & Food Research, 2009
- Occurrence of mycotoxins in maize, grass and wheat silage for dairy cattle in the NetherlandsFood Additives & Contaminants: Part B, 2008
- Neutral red uptake assay for the estimation of cell viability/cytotoxicityNature Protocols, 2008
- Enniatin Exerts p53-Dependent Cytostatic and p53-Independent Cytotoxic Activities against Human Cancer CellsChemical Research in Toxicology, 2007
- Investigation of the electrophysiological properties of enniatinsArchives of Biochemistry and Biophysics, 2004
- Cytotoxicity, inhibition of DNA and protein syntheses and oxidative damage in cultured cells exposed to zearalenoneToxicology in Vitro, 2004