Metabolic consequences of interesterified palm oil and PCB-126 co-exposure in C57BL/6 mice

Metabolic dysfunction-associated steatotic liver disease (MASLD) is defined as morphofunctional changes in the liver. Studies have shown that Westernized eating patterns and environmental pollutants can directly induce the development of MASLD. This study evaluates the effect of co-exposure to inter...

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Published in:Food and chemical toxicology 2024-10, Vol.192, p.114965, Article 114965
Main Authors: Teixeira, Ananda Vitoria Silva, Quitete, Fernanda Torres, Martins, Bruna Cadete, Peixoto, Thamara Cherem, Ribeiro, Mayara da Silva, Velasco, Patricia Coelho de, Miranda, Caroline, Resende, Angela de Castro, Costa, Daniela Caldeira, Atella, Geórgia Correa, Mucci, Daniela de Barros, Souza-Mello, Vanessa, Martins, Fabiane Ferreira, Daleprane, Julio Beltrame
Format: Article
Language:English
Subjects:
Endoplasmic reticulum stress
Hepatic steatosis
Inflammatory markers
Metabolic dysfunction
Mitochondrial dysfunction
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Summary:Metabolic dysfunction-associated steatotic liver disease (MASLD) is defined as morphofunctional changes in the liver. Studies have shown that Westernized eating patterns and environmental pollutants can directly induce the development of MASLD. This study evaluates the effect of co-exposure to interesterified palm oil (IPO) and 3,3′,4,4′,5-pentachlorobiphenyl (PCB-126) on the progression of MASLD in an animal model. C57BL/6 mice were fed IPO and co-exposed to PCB-126 for ten weeks. The co-exposure led to an imbalance in carbohydrate metabolism, increased systemic inflammation markers, and morphofunctional changes in the liver. These liver changes included the presence of inflammatory cells, fibrosis, alterations in aspartate transaminase (AST) and alanine transaminase (ALT) enzymes, and imbalance in gene expression related to fatty acid β-oxidation, de novo lipogenesis, mitochondrial dynamics, and endoplasmic reticulum stress. Separate exposures to IPO and PCB-126 affected metabolism and MASLD progression. Nutritional and lifestyle factors may potentiate the onset and severity of MASLD. [Display omitted] •Co-exposure to interesterified palm oil and PCB-126 worsens metabolic dysfunction and liver damage in C57BL/6 mice.•Co-exposure to interesterified palm oil and PCB-126 upregulates fibrotic gene expression.•Combined dietary and environmental factors can lead to health risks.
ISSN:0278-6915
1873-6351
1873-6351
DOI:10.1016/j.fct.2024.114965