PMID- 37459907 OWN - NLM STAT- MEDLINE DCOM- 20231113 LR - 20231114 IS - 1098-8823 (Print) IS - 1098-8823 (Linking) VI - 169 DP - 2023 Dec TI - The analysis of fatty acids and their derivatives in the liver of C57BL/6 mice with long-term caloric restrictions. PG - 106764 LID - S1098-8823(23)00061-8 [pii] LID - 10.1016/j.prostaglandins.2023.106764 [doi] AB - Caloric restriction (CR) is a dietetic intervention based on the reduction of daily calorie intake by 10-30 %. When subjected to CR, the organism adjusts its metabolism to the changing availability of key nutrients. However, fatty acids' content in organisms subjected to long-term CR has not been evaluated. The aim of the research was to analyze the influence of long-term CR on the contents of medium- and long-chain fatty acids, as well as on the contents of fatty acid derivatives in liver. The study was performed on C57BL female (n = 12) and male (n = 12) mice subjected to lifelong 30 % calorie restriction. Fatty acids were analyzed using gas chromatography, while fatty acid derivatives were analyzed with liquid chromatography. The dynamics of change of the lipid profile of the labeled fatty acids observed in the liver tissue confirms that lipolysis actively takes place in this organ when hungry. Moreover, it is highly possible that de novo synthesis of acids takes place, with the aim to ensure energy substrates to the body. Moreover, an increase of concentration was observed for fatty acid derivatives, those with anti-inflammatory properties (resolvin, LTX A4). However, there was no increase in the concentration of pro-inflammatory eicosanoids. The results suggest that it is important to take into consideration the introduction of appropriate supplements when using CR. CI - Copyright (c) 2023 The Authors. Published by Elsevier Inc. All rights reserved. FAU - Palma, J AU - Palma J AD - Department of Biochemical Science, Pomeranian Medical University in Szczecin, Broniewskiego 24, 71-460 Szczecin, Poland. FAU - Maciejewska-Markiewicz, D AU - Maciejewska-Markiewicz D AD - Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, Broniewskiego 24, 71-460 Szczecin, Poland. FAU - Zgutka, K AU - Zgutka K AD - Department of Physiology in Health Sciences, Pomeranian Medical University in Szczecin, Zolnierska 54, 71-210 Szczecin, Poland. FAU - D Piotrowska, K AU - D Piotrowska K AD - Department of Physiology, Pomeranian Medical University in Szczecin, Powstancow Wlkp. 72, 70-111 Szczecin, Poland. FAU - Skonieczna-Zydecka, K AU - Skonieczna-Zydecka K AD - Department of Biochemical Science, Pomeranian Medical University in Szczecin, Broniewskiego 24, 71-460 Szczecin, Poland. FAU - Stachowska, E AU - Stachowska E AD - Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, Broniewskiego 24, 71-460 Szczecin, Poland. Electronic address: ewa.stachowska@pum.edu.pl. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230717 PL - United States TA - Prostaglandins Other Lipid Mediat JT - Prostaglandins & other lipid mediators JID - 9808648 RN - 0 (Fatty Acids) SB - IM MH - Male MH - Female MH - Mice MH - Animals MH - *Fatty Acids/metabolism MH - *Caloric Restriction MH - Mice, Inbred C57BL MH - Liver/metabolism OTO - NOTNLM OT - C57BL/6 mouse OT - Caloric restriction OT - Fatty acids OT - Fatty acids derivatives OT - Liver COIS- Conflicts of interests The authors declare no conflict of interest. EDAT- 2023/07/18 01:09 MHDA- 2023/11/13 06:42 CRDT- 2023/07/17 19:19 PHST- 2023/03/02 00:00 [received] PHST- 2023/07/03 00:00 [revised] PHST- 2023/07/08 00:00 [accepted] PHST- 2023/11/13 06:42 [medline] PHST- 2023/07/18 01:09 [pubmed] PHST- 2023/07/17 19:19 [entrez] AID - S1098-8823(23)00061-8 [pii] AID - 10.1016/j.prostaglandins.2023.106764 [doi] PST - ppublish SO - Prostaglandins Other Lipid Mediat. 2023 Dec;169:106764. doi: 10.1016/j.prostaglandins.2023.106764. Epub 2023 Jul 17.