Lipidomic profiling of juvenile yellow head catfish (Pelteobagrus fulvidraco) in response to Fucoidan diet
2017
Xu, Panpan | Wang, Yajun | Chen, Juanjuan | Yang, Rui | Zhou, Qicun
Yellow head catfish, Pelteobagrus fulvidraco, with delicious meat and high commercial value has relatively high lipid accumulation which is considered to be a major problem in aquaculture. It was found that fucoidan has the functions in reducing lipid concentration and enhancing the immunity capability. The purpose of this study is to understand the role of fucoidan in juvenile yellow head catfish and the underlying comprehensive lipid metabolic regulation. The overall changes of significant lipid biomarkers in juvenile yellow head catfish fed on 0.1% fucoidan at different time points were studied by ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC-ESI-Q-TOF-MS) and multivariate statistical analysis. At the eighth week, the lipid profile had the largest difference between the two groups, with 10 lipids identified as potential lipid biomarkers. Lysophosphatidylcholine (Lyso-PC), phosphatidylcholine (PC), and phosphatidylethanolamine (PE) were elevated, while triglycerides (TAGs) were reduced in SF group compared to C group. Overall, the content of free fatty acids (FFAs), derived from TAG, was decreased, whereas that of total fatty acids (TFAs) derived from FFAs showed the opposite tendency. Fucoidan can reduce the content of triglyceride perhaps by altering the activities of related enzymes and improve immunity capability of the juvenile yellow head catfish through increasing the whole levels of related fatty acids, which may be useful for facilitating efficient development and scientific improvement of fishery.
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