PMID- 31580709 OWN - NLM STAT- MEDLINE DCOM- 20191114 LR - 20191114 IS - 1208-6002 (Electronic) IS - 0829-8211 (Linking) VI - 97 IP - 5 DP - 2019 Oct TI - Low n-6/n-3 PUFA ratio improves inflammation and myocardial ischemic reperfusion injury. PG - 621-629 LID - 10.1139/bcb-2018-0342 [doi] AB - This study investigated the potential effect of n-6/n-3 polyunsaturated fatty acids (PUFA) on inflammation and myocardial ischemic reperfusion injury (MIRI) in rats, together with the underlying protective mechanisms, and screen out most effective ratio of n-6/n-3 within limits. The rats with pre-infarct treatment were distributed among 5 groups according to the n-6/n-3 ratio (36:1; 1:1, 5:1, 10:1, 50:1); for the post-infarct treatment, the rats were distributed among 6 groups, including the control group (36:1) which was subjected to a sham procedure; the model group (36:1); and 4 test groups (n-6/n-3 ratio: 1:1, 5:1, 10:1, 50:1). All of the rats were fed a purple perilla seed oil and safflower oil-based fatty emulsion. The serum levels of monocyte chemoattractant protein-1 (MCP-1), interleukin (IL)-1beta, IL-6, and tumor necrosis factor (TNF)-alpha were determined using enzyme-linked immunosorbent assay. Staining with triphenyl tetrazolium chloride, hematoxylin and eosin, or Masson's trichrome was performed for histological examination. Cardiomyocyte apoptosis was examined by TUNEL assay. Western blotting was performed to examine the expression levels of apoptosis-related proteins and signaling pathway proteins. Our data indicate that in both the pre-infarct treatment and post-infarct treatment, low ratios of n-6/n-3 PUFAs significantly inhibited the levels of serum inflammatory factors, the infarct size of MIRI rats, number of cardiomyocytes undergoing apoptosis, and the expression levels of caspase-3, Bcl-2, and Bax in the MIRI group. Thus a low ratio of n-6/n-3 PUFAs ameliorates inflammation and myocardial ischemic reperfusion injury. FAU - Ma, Caiyan AU - Ma C AD - Cardiovascular Department, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang Province, 310012, People's Republic of China. AD - Cardiovascular Department, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang Province, 310012, People's Republic of China. FAU - Xu, Zehang AU - Xu Z AD - Cardiovascular Department, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang Province, 310012, People's Republic of China. AD - Cardiovascular Department, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang Province, 310012, People's Republic of China. FAU - Lv, Heng AU - Lv H AD - Cardiovascular Department, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang Province, 310012, People's Republic of China. AD - Cardiovascular Department, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang Province, 310012, People's Republic of China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20191003 PL - Canada TA - Biochem Cell Biol JT - Biochemistry and cell biology = Biochimie et biologie cellulaire JID - 8606068 RN - 0 (Fatty Acids, Omega-3) RN - 0 (Fatty Acids, Omega-6) SB - IM MH - Animals MH - Apoptosis/drug effects MH - Dietary Supplements MH - Fatty Acids, Omega-3/administration & dosage/metabolism/*pharmacology MH - Fatty Acids, Omega-6/administration & dosage/metabolism/*pharmacology MH - Inflammation/*drug therapy/metabolism/pathology MH - Male MH - Myocardial Reperfusion Injury/*drug therapy/metabolism/pathology MH - Myocytes, Cardiac/drug effects MH - Rats MH - Rats, Sprague-Dawley OTO - NOTNLM OT - AGPI n-6/n-3 OT - DIRM OT - MIRI OT - inflammation OT - n-6/n-3 PUFA EDAT- 2019/10/04 06:00 MHDA- 2019/11/15 06:00 CRDT- 2019/10/04 06:00 PHST- 2019/10/04 06:00 [pubmed] PHST- 2019/11/15 06:00 [medline] PHST- 2019/10/04 06:00 [entrez] AID - 10.1139/bcb-2018-0342 [doi] PST - ppublish SO - Biochem Cell Biol. 2019 Oct;97(5):621-629. doi: 10.1139/bcb-2018-0342. Epub 2019 Oct 3.