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Journal Article
Research Support, Non-U.S. Gov't
Quadrupole Orbitrap Mass Spectrometer-Based Metabonomic Elucidation of Influences of Short-Term Di(2-ethylhexyl) phthalate Exposure on Cardiac Metabolism in Male Mice.
Chemical Research in Toxicology 2018 November 20
Di(2-ethylhexyl) phthalate (DEHP) can cause severe environmental pollution. Effects of DEHP on cardiac metabolism have been reported, but its mechanism(s) of action is not fully clear. Here, we used high-resolution mass spectrometry for metabonomics and molecular biological methods to identify the different endogenous metabolites affected by DEHP that might cause changes in cardiac metabolism in mice, map the network of metabolic pathways, and reveal (at the molecular level) how DEHP affects cardiac metabolism. The results showed that DEHP could inhibit the β-oxidation of fatty acids and gluconeogenesis, promote glycolysis, and inhibit the tricarboxylic acid cycle in cardiomyocytes. DEHP caused mitochondrial dysfunction by inhibiting the synthesis and transport of fatty acids and, thus, inhibiting the synthesis and breakdown of adenosine triphosphate in mitochondria. Pathology revealed that DEHP could change the normal structures and functions of the heart and bodies of mice. DEHP can interfere with the physiological and metabolic function of the heart in mice by disrupting the endogenous metabolite and gene levels.
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