Mycotoxins and Their Human Biological Effects

A special issue of Toxins (ISSN 2072-6651). This special issue belongs to the section "Mycotoxins".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 2685

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Guest Editor
LAQV, REQUIMTE, Laboratory of Bromatology and Pharmacognosy, Faculty of Pharmacy, University of Coimbra, Polo III, Azinhaga de Stª Comba, 3000-548 Coimbra, Portugal
Interests: environmental and food safety; mycotoxins, pharmaceuticals, and other contaminants in foods and biological fluids; human exposure evaluation; biomonitoring
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Special Issue Information

Food is among the most complex xenobiotic vehicles to which humans are exposed. Among biological xenobiotics are toxins produced by living organisms such as mycotoxins. 

Mycotoxins are low molecular fungal metabolites that occur naturally under a certain temperature and moisture conditions, contaminating foods throughout the food chain. These secondary fungal metabolites are produced by different fungal species that develop worldwide, in both crops and processed food commodities. 

Among the more than 400 mycotoxins already identified and reported, those that have attracted notable attention for their toxic effects and high prevalence in agro-food commodities are aflatoxins, ochratoxin A, trichothecenes, fumonisins, zearalenone, patulin, and citrinin. Moreover, “emerging” mycotoxins include, among others, enniatins and beauvericin.

The intake of mycotoxins does not always represent the amount that is available to the body. Mycotoxin bioaccessibility depends on the compound, food product, and contamination level. The resulting toxic effects on human health have attracted worldwide attention. They have recognized mutagenic, carcinogenic, hepatotoxic, nephrotoxic, estrogenic, teratogenic, and immunosuppressive effects. Population-vulnerable groups, such as infants and children, with high consumption versus low body weight, high metabolism and low detoxification capacity, are highly susceptible to disease outcomes following exposure to even small doses of contaminants.

Human biomonitoring allows the exposure of each individual to be measured by the determination and/or its metabolites and biomarkers of effect on biological fluids or tissues and provides a scientific basis for risk assessment targeting public health protection.

In this sense, we aim to assemble a Special Issue, including original research articles or comprehensive reviews, which will cover our current understanding of the main biological effects of single or combined mycotoxins on humans, including the following topics:

  • Toxicological studies to access human biological effects;
  • Mycotoxins bioaccessibility, bioavailability and reduction during in vitro studies;
  • Human biomonitoring studies;
  • Novel methodologies for these research topics.

Dr. Liliana J.G. Silva
Guest Editor

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Keywords

  • mycotoxins (single or combined)
  • human biological effects
  • toxicological studies
  • mycotoxins bioaccessibility, bioavailability and reduction
  • biomonitoring studies
  • novel methodologies

Published Papers (1 paper)

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Research

14 pages, 369 KiB  
Article
Mycotoxins Exposure in Cabinda, Angola—A Pilot Biomonitoring Survey of Breastmilk
by Sofia Duarte, Liliana J. G. Silva, André M. P. T. Pereira, Marta Gimbi, Cristiane Cesar, Vanessa Vidal, Rita Basílio, Anabela Almeida, Celeste Lino and Angelina Pena
Toxins 2022, 14(3), 204; https://doi.org/10.3390/toxins14030204 - 10 Mar 2022
Cited by 6 | Viewed by 2234
Abstract
Breast milk is considered the ideal form of nutrition for newborns and infants. However, it can carry over contaminants, namely mycotoxins, with biological effects to which this population is particularly vulnerable. Human biomonitoring and surveillance programs are particularly scarce in low-income countries, where [...] Read more.
Breast milk is considered the ideal form of nutrition for newborns and infants. However, it can carry over contaminants, namely mycotoxins, with biological effects to which this population is particularly vulnerable. Human biomonitoring and surveillance programs are particularly scarce in low-income countries, where food security is a more urgent priority in comparison with food safety. This pilot survey aims to assess exposure of breastfed infants to aflatoxin M1 (AFM1), zearalenone (ZEN), and ochratoxin A (OTA) in Angola, and to evaluate the main socio-demographical and food consumption determinants of lactating mothers. All 37 breast milk samples analyzed are found to be contaminated with ZEN and OTA, although none are found contaminated with AFM1. Contamination levels are lower than previously reported for ZEN but higher in the case of OTA. A significant association between ZEN levels in breast milk and the consumption of cookies by the lactating mothers is found. As for OTA, higher levels are observed in the milk from mothers with younger infants, for which high estimated daily intake (EDI) is determined. As far as the authors are aware, this is the first survey of the occurrence of mycotoxins in breast milk in Angola, so further human biomonitoring works should follow, given that mycotoxins are a global health issue that directly impact the health of populations. Full article
(This article belongs to the Special Issue Mycotoxins and Their Human Biological Effects)
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