New Data on Cylindrospermopsin Toxicity

Overview

Journal Toxins (Basel)

Publisher MDPI

Specialty Toxicology

Date 2021 Jan 12

PMID 33429940

Citations 6

Authors

Mariela Chichova

Oskan Tasinov

Milena Shkodrova

Milena Mishonova

Iliyana Sazdova

Bilyana Ilieva

Dilyana Doncheva-Stoimenova

Yoana Kiselova-Kaneva

Neli Raikova

Blagoy Uzunov

Diana Ivanova

Hristo Gagov

Affiliations

Soon will be listed here.

Abstract

Cylindrospermopsin (CYN) is a widely spread cyanotoxin that can occur in fresh water and food. This research aims to investigate CYN toxicity by studying the effects of drinking 0.25 nM of CYN-contaminated water from a natural source, and of the direct application of moderate concentrations of CYN on different animal targets. The chosen structures and activities are rat mitochondria inner membrane permeability, mitochondrial ATP synthase (ATPase) and rat liver diamine oxidase (DAO) activities (EC 1.4.3.22.), the force of the contraction of an excised frog heart preparation with functional innervation, and the viability of a human intestinal epithelial cell line (HIEC-6). The oral exposure to CYN decreased the reverse (hydrolase) activity of rat liver ATPase whereas its short-term, in vitro application was without significant effect on this organelle, DAO activity, heart contractions, and their neuronal regulation. The application of CYN reduced HIEC-6 cells' viability dose dependently. It was concluded that CYN is moderately toxic for the human intestinal epithelial cells, where the regeneration of the epithelial layer can be suppressed by CYN. This result suggests that CYN may provoke pathological changes in the human gastrointestinal tract.

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