Journal
SCIENTIFIC REPORTS
Volume 9, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41598-019-54225-8
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Funding
- Ministry of Health of the Czech Republic [15-28745 A AZV CR]
- MH CZ-DRO (Institute for Clinical and Experimental Medicine-IKEM) [IN 00023001]
- European Regional Development Fund [AIIHHP: CZ.02.1.01/0.0/0.0/16_025/000 7428]
- state budget of the Czech Republic [AIIHHP: CZ.02.1.01/0.0/0.0/16_025/000 7428]
- Academy of Sciences of the Czech Republic [RVO 68378050]
- Ministry of Education, Youth and Sports [LM2015040, CZ.1.05/2.1.00/19.0395, CZ.1.05/1.1.00/02.0109, Q1604]
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Parenteral nutrition (PN) is often associated with the deterioration of liver functions (PNALD). Omega-3 polyunsaturated fatty acids (PUFA) were reported to alleviate PNALD but the underlying mechanisms have not been fully unraveled yet. Using omics' approach, we determined serum and liver lipidome, liver proteome, and liver bile acid profile as well as markers of inflammation and oxidative stress in rats administered either omega-6 PUFA based lipid emulsion (Intralipid) or omega-6/omega-3 PUFA blend (Intralipid/Omegaven) via the enteral or parenteral route. In general, we found that enteral administration of both lipid emulsions has less impact on the liver than the parenteral route. Compared with parenterally administered Intralipid, PN administration of omega-3 PUFA was associated with 1. increased content of eicosapentaenoic (EPA)- and docosahexaenoic (DHA) acids-containing lipid species; 2. higher abundance of CYP4A isoenzymes capable of bioactive lipid synthesis and the increased content of their potential products (oxidized EPA and DHA); 3. downregulation of enzymes involved CYP450 drug metabolism what may represent an adaptive mechanism counteracting the potential negative effects (enhanced ROS production) of PUFA metabolism; 4. normalized anti-oxidative capacity and 5. physiological BAs spectrum. All these findings may contribute to the explanation of omega-3 PUFA protective effects in the context of PN.
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