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Advisor(s)
Abstract(s)
As toxinas da Alternaria são metabolitos secundários produzidos por fungos
do género Alternaria, que são agentes patogénicos e saprófitas comuns
das plantas, com a capacidade de crescer numa ampla gama de temperaturas
e níveis de humidade. Deste modo, estão amplamente distribuídos no
ambiente e são contaminantes prevalentes em produtos agrícolas a nível
mundial, causando danos pré e pós-colheita em frutas, vegetais, cereais e
grãos. Apesar de causarem perdas económicas relevantes e representarem
um risco para a saúde humana e animal, até ao momento não há uma caracterização
adequada dos perigos associados a estas micotoxinas emergentes.
Neste artigo apresenta-se um resumo da literatura referente aos efeitos
tóxicos destas micotoxinas ao nível do fígado, com ênfase nos estudos de
citotoxicidade e genotoxicidade. Estes estudos toxicológicos sugerem que
micotoxinas da Alternaria podem induzir a perda da viabilidade celular e
danos do DNA nas células hepáticas humanas.
Alternaria mycotoxins are secondary metabolites produced by black moulds of the genus Alternaria, which are common plant pathogens and saprophytes that can grow in a wide range of temperatures and moisture levels. Thus, they are widely distributed in the environment, and are prevalent contaminants of food and feed worldwide, causing pre- and post-harvest damage to agricultural products, such as fruits, vegetables, cereals and grains. Despite causing relevant economic losses and posing a risk to the health of humans and animals, there is a lack of proper hazard characterization for these emergent mycotoxins. This ar ticle aims to summarize data on these mycotoxins, focusing on hepatic cytotoxicity and genotoxicity. These toxicological studies suggest that Alternaria mycotoxins may induce loss of cell viability and DNA damage in human hepatocytes.
Alternaria mycotoxins are secondary metabolites produced by black moulds of the genus Alternaria, which are common plant pathogens and saprophytes that can grow in a wide range of temperatures and moisture levels. Thus, they are widely distributed in the environment, and are prevalent contaminants of food and feed worldwide, causing pre- and post-harvest damage to agricultural products, such as fruits, vegetables, cereals and grains. Despite causing relevant economic losses and posing a risk to the health of humans and animals, there is a lack of proper hazard characterization for these emergent mycotoxins. This ar ticle aims to summarize data on these mycotoxins, focusing on hepatic cytotoxicity and genotoxicity. These toxicological studies suggest that Alternaria mycotoxins may induce loss of cell viability and DNA damage in human hepatocytes.
Description
Keywords
Toxinas da Alternaria Géneros Alimentícios Micotoxinas Exposição Humana Avaliação do Risco Doenças Genéticas
Pedagogical Context
Citation
Boletim Epidemiológico Observações. 2024 janeiro-abril;13(35):21-25
Publisher
Instituto Nacional de Saúde Doutor Ricardo Jorge, IP
