PMID- 33444711 OWN - NLM STAT- MEDLINE DCOM- 20210702 LR - 20220402 IS - 1879-260X (Electronic) IS - 0925-4439 (Print) IS - 0925-4439 (Linking) VI - 1867 IP - 4 DP - 2021 Apr 1 TI - The interaction between brain and liver regulates lipid metabolism in the TBI pathology. PG - 166078 LID - S0925-4439(21)00011-9 [pii] LID - 10.1016/j.bbadis.2021.166078 [doi] AB - To shed light on the impact of systemic physiology on the pathology of traumatic brain injury (TBI), we examine the effects of TBI (concussive injury) and dietary fructose on critical aspects of lipid homeostasis in the brain and liver of young-adult rats. Lipids are integral components of brain structure and function, and the liver has a role on the synthesis and metabolism of lipids. Fructose is mainly metabolized in the liver with potential implications for brain function. Lipidomic analysis accompanied by unbiased sparse partial least squares discriminant analysis (sPLS-DA) identified lysophosphatidylcholine (LPC) and cholesterol ester (CE) as the top lipid families impacted by TBI and fructose in the hippocampus, and only LPC (16:0) was associated with hippocampal-dependent memory performance. Fructose and TBI elevated liver pro-inflammatory markers, interleukin-1alpha (IL-1alpha), Interferon-gamma (IFN-gamma) that correlated with hippocampal-dependent memory dysfunction, and monocyte chemoattractant protein-1 (MCP-1) positively correlated with LPC levels in the hippocampus. The effects of fructose were more pronounced in the liver, in agreement with the role of liver on fructose metabolism and suggest that fructose could exacerbate liver inflammation caused by TBI. The overall results indicate that TBI and fructose interact to influence systemic and central inflammation by engaging liver lipids. The impact of TBI and fructose diet on the periphery provides a therapeutic target to counteract the TBI pathogenesis. CI - Copyright (c) 2021 Elsevier B.V. All rights reserved. FAU - Palafox-Sanchez, Victoria AU - Palafox-Sanchez V AD - Department of Integrative Biology & Physiology, UCLA, Los Angeles, USA. FAU - Ying, Zhe AU - Ying Z AD - Department of Integrative Biology & Physiology, UCLA, Los Angeles, USA. FAU - Royes, Luiz Fernando Freire AU - Royes LFF AD - Department of Integrative Biology & Physiology, UCLA, Los Angeles, USA; Exercise Biochemistry Laboratory, Center of Physical Education and Sports, Federal University of Santa Maria - UFSM, Santa Maria, RS, Brazil. FAU - Gomez-Pinilla, Fernando AU - Gomez-Pinilla F AD - Department of Integrative Biology & Physiology, UCLA, Los Angeles, USA; Department of Neurosurgery, UCLA Brain Injury Research Center, Los Angeles, USA. Electronic address: fgomezpi@ucla.edu. LA - eng GR - R01 NS050465/NS/NINDS NIH HHS/United States GR - R01 NS111378/NS/NINDS NIH HHS/United States GR - R01 NS117148/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20210112 PL - Netherlands TA - Biochim Biophys Acta Mol Basis Dis JT - Biochimica et biophysica acta. Molecular basis of disease JID - 101731730 SB - IM MH - Animals MH - Brain/metabolism/*physiopathology MH - Brain Injuries, Traumatic/metabolism/*physiopathology MH - Inflammation/metabolism/physiopathology MH - *Lipid Metabolism MH - Liver/metabolism/*physiopathology MH - Male MH - Rats MH - Rats, Sprague-Dawley PMC - PMC7889047 MID - NIHMS1661977 OTO - NOTNLM OT - Cognition OT - Fructose OT - Liver OT - Lysophosphatidylcholine OT - Traumatic brain injury OT - cPLA2 COIS- Competing Interests Statement The authors declare no competing interests. Declaration of interests The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2021/01/15 06:00 MHDA- 2021/07/03 06:00 PMCR- 2022/04/01 CRDT- 2021/01/14 20:12 PHST- 2020/09/29 00:00 [received] PHST- 2020/12/28 00:00 [revised] PHST- 2021/01/03 00:00 [accepted] PHST- 2021/01/15 06:00 [pubmed] PHST- 2021/07/03 06:00 [medline] PHST- 2021/01/14 20:12 [entrez] PHST- 2022/04/01 00:00 [pmc-release] AID - S0925-4439(21)00011-9 [pii] AID - 10.1016/j.bbadis.2021.166078 [doi] PST - ppublish SO - Biochim Biophys Acta Mol Basis Dis. 2021 Apr 1;1867(4):166078. doi: 10.1016/j.bbadis.2021.166078. Epub 2021 Jan 12.