Comparison of Anorectic and Emetic Potencies of Deoxynivalenol (Vomitoxin) to the Plant Metabolite Deoxynivalenol-3-Glucoside and Synthetic Deoxynivalenol Derivatives EN139528 and EN139544
Open Access
- 30 August 2014
- journal article
- research article
- Published by Oxford University Press (OUP) in Toxicological Sciences
- Vol. 142 (1), 167-181
- https://doi.org/10.1093/toxsci/kfu166
Abstract
The mycotoxin deoxynivalenol (DON) elicits robust anorectic and emetic effects in several animal species. However, less is known about the potential for naturally occurring and synthetic congeners of this trichothecene to cause analogous responses. Here we tested the hypothesis that alterations in DON structure found in the plant metabolite deoxynivalenol-3-glucoside (D3G) and two pharmacologically active synthetic DON derivatives, EN139528 and EN139544, differentially impact their potential to evoke food refusal and emesis. In a nocturnal mouse food consumption model, oral administration with DON, D3G, EN139528, or EN139544 at doses from 2.5 to 10 mg/kg BW induced anorectic responses that lasted up to 16, 6, 6, and 3 h, respectively. Anorectic potency rank orders were EN139544>DON>EN139528>D3G from 0 to 0.5 h but DON>D3G>EN139528>EN139544 from 0 to 3 h. Oral exposure to each of the four compounds at a common dose (2.5 mg/kg BW) stimulated plasma elevations of the gut satiety peptides cholecystokinin and to a lesser extent, peptide YY3–36 that corresponded to reduced food consumption. In a mink emesis model, oral administration of increasing doses of the congeners differentially induced emesis, causing marked decreases in latency to emesis with corresponding increases in both the duration and number of emetic events. The minimum emetic doses for DON, EN139528, D3G, and EN139544 were 0.05, 0.5, 2, and 5 mg/kg BW, respectively. Taken together, the results suggest that although all three DON congeners elicited anorectic responses that mimicked DON over a narrow dose range, they were markedly less potent than the parent mycotoxin at inducing emesis.Keywords
This publication has 46 references indexed in Scilit:
- From the Gut to the Brain: Journey and Pathophysiological Effects of the Food-Associated Trichothecene Mycotoxin DeoxynivalenolToxins, 2013
- Gastrointestinal transit measurements in mice with 99mTc-DTPA-labeled activated charcoal using NanoSPECT-CTEJNMMI Research, 2013
- Masked mycotoxins: A reviewMolecular Nutrition & Food Research, 2012
- Metabolism of the masked mycotoxin deoxynivalenol-3-glucoside in ratsToxicology Letters, 2012
- Diet: Friend or Foe of Enteroendocrine Cells: How It Interacts with Enteroendocrine CellsAdvances in Nutrition: An International Review Journal, 2012
- Hydrolytic fate of deoxynivalenol-3-glucoside during digestionToxicology Letters, 2011
- The Food-Contaminant Deoxynivalenol Modifies Eating by Targeting Anorexigenic NeurocircuitryPLOS ONE, 2011
- Characterization of deoxynivalenol-induced anorexia using mouse bioassayFood and Chemical Toxicology, 2011
- The role of gut hormones in the regulation of body weight and energy homeostasisMolecular and Cellular Endocrinology, 2010
- Immunochemical assessment of deoxynivalenol tissue distribution following oral exposure in the mouseToxicology Letters, 2008