Di‐2‐ethylhexyl phthalate (DEHP) exposure disturbs lipid metabolism in juvenile yellow catfish Tachysurus fulvidraco

• Published in: Journal of fish biology Vol. 92; no. 1; pp. 85 - 93
• Main Authors: Meng, F. X., Li, M., Song, M. Z., Yuan, L. X., Gong, Y. F., Qian, Y. X., Shi, G., Wang, R. X.
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01.01.2018; Wiley Subscription Services, Inc
• Subjects: Acetyl-CoA carboxylase; Animals; Carnitine; Carnitine palmitoyltransferase; Catfish; Catfishes - genetics; Catfishes - metabolism; DEHP; Diethylhexyl Phthalate - toxicity; enzyme; Exposure; Fatty acids; Fatty-acid synthase; Fish; Fish Proteins - genetics; Fish Proteins - metabolism; Freshwater fishes; gene; Lipase; Lipid metabolism; Lipid Metabolism - drug effects; Lipids; Lipoprotein lipase; Lipoproteins; Liver - metabolism; Metabolism; mRNA; Nucleic acids; Palmitoyltransferase; Peroxisome proliferator-activated receptors; Ribonucleic acid; RNA; RNA, Messenger - metabolism; Tachysurus fulvidraco; Water Pollutants, Chemical - toxicity; enzyme; gene; DEHP; lipid metabolism; Tachysurus fulvidraco
• ISSN: 0022-1112; 1095-8649
• DOI: 10.1111/jfb.13493

This study was conducted to determine the mechanism by which di‐2‐ethylhexyl phthalate (DEHP) exposure influences lipid metabolism of juvenile yellow catfish Tachysurus fulvidraco. Fish were exposed to three DEHP concentrations (0, 0·1 and 0·5 mg l−1 DEHP) for 8 weeks. Fatty acid synthase (FAS) activity significantly decreased with increasing DEHP concentrations, the highest value was in the Tween control group, whereas the lowest activities of carnitine palmitoyltransferase (CPT) and lipoprotein lipase (LPL) were in this group. The messenger (m)RNA levels of 6‐phospho‐gluconate dehydrogenase (6PGD), FAS and acetyl‐CoA carboxylase a (ACCa) significantly increased with increasing DEHP concentration, the highest values were in the 0·5 mg l−1 DEHP group. The mRNA level of peroxisome proliferator‐activated receptor γ (PPARγ) was lower in Tween control than in fish exposed to 0·1 and 0·5 mg l−1 DEHP. The highest mRNA level of ACCb was in the 0·1 mg l−1 DEHP group. These results indicate that DEHP exposure can disturb lipid metabolism at the enzymatic and mRNA levels in Pelteobagrus fulvidraco.