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Schuchardt JP, Beinhorn P, Hu XF, Chan HM, Roke K, Bernasconi A, Hahn A, Sala-Vila A, Stark KD, Harris WS. Omega-3 world map: 2024 update. Prog Lipid Res 2024; 95:101286. [PMID: 38879135 DOI: 10.1016/j.plipres.2024.101286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/31/2024] [Accepted: 06/05/2024] [Indexed: 07/06/2024]
Abstract
In 2016, the first worldwide n3 PUFA status map was published using the Omega-3 Index (O3I) as standard biomarker. The O3I is defined as the percentage of EPA + DHA in red blood cell (RBC) membrane FAs. The purpose of the present study was to update the 2016 map with new data. In order to be included, studies had to report O3I and/or blood EPA + DHA levels in metrics convertible into an estimated O3I, in samples drawn after 1999. To convert the non-RBC-based EPA + DHA metrics into RBC we used newly developed equations. Baseline data from clinical trials and observational studies were acceptable. A literature search identified 328 studies meeting inclusion criteria encompassing 342,864 subjects from 48 countries/regions. Weighted mean country O3I levels were categorized into very low ≤4%, low >4-6%, moderate >6-8%, and desirable >8%. We found that the O3I in most countries was low to very low. Notable differences between the current and 2016 map were 1) USA, Canada, Italy, Turkey, UK, Ireland and Greece (moving from the very low to low category); 2) France, Spain and New Zealand (low to moderate); and 3) Finland and Iceland (moderate to desirable). Countries such as Iran, Egypt, and India exhibited particularly poor O3I levels.
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Affiliation(s)
- Jan Philipp Schuchardt
- The Fatty Acid Research Institute, 5009 W. 12(th) St. Ste 5, Sioux Falls, SD 57106, United States; Institute of Food and One Health, Leibniz University Hannover, Am kleinen Felde 30, 30167 Hannover, Germany.
| | - Philine Beinhorn
- Institute of Food and One Health, Leibniz University Hannover, Am kleinen Felde 30, 30167 Hannover, Germany
| | - Xue Feng Hu
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | - Hing Man Chan
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | - Kaitlin Roke
- Global Organization for EPA and DHA Omega-3s (GOED), 222 South Main Street, Suite 500, Salt Lake City, UT 84101, United States
| | - Aldo Bernasconi
- Global Organization for EPA and DHA Omega-3s (GOED), 222 South Main Street, Suite 500, Salt Lake City, UT 84101, United States
| | - Andreas Hahn
- Institute of Food and One Health, Leibniz University Hannover, Am kleinen Felde 30, 30167 Hannover, Germany
| | - Aleix Sala-Vila
- The Fatty Acid Research Institute, 5009 W. 12(th) St. Ste 5, Sioux Falls, SD 57106, United States; Hospital del Mar Medical Research Institute, Dr. Aiguader 88, 08003 Barcelona, Spain
| | - Ken D Stark
- Department of Kinesiology and Health Sciences, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada
| | - William S Harris
- The Fatty Acid Research Institute, 5009 W. 12(th) St. Ste 5, Sioux Falls, SD 57106, United States; Department of Internal Medicine, Sanford School of Medicine, University of South Dakota, 1400 W. 22nd St., Sioux Falls, SD 57105, United States
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Macartney MJ, Ghodsian MM, Noel-Gough B, McLennan PL, Peoples GE. DHA-Rich Fish Oil Increases the Omega-3 Index in Healthy Adults and Slows Resting Heart Rate without Altering Cardiac Autonomic Reflex Modulation. J Am Coll Nutr 2021; 41:637-645. [PMID: 34379997 DOI: 10.1080/07315724.2021.1953417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Regular fish consumption, a rich source of long-chain omega-3 (ω-3) docosahexaenoic acid (DHA), modifies cardiac electrophysiology. However, human studies investigating fish oil and cardiac electrophysiology have predominantly supplemented therapeutic (high) doses of fish oil (often ω-3 eicosapentaenoic acid (EPA) rich sources). This study examined whether non-therapeutic doses of DHA-rich fish oil modulate cardiac electrophysiology at rest and during cardiovascular reflex challenges to the same extent, if at all, in young healthy adults. Participants (N = 20) were supplemented (double-blinded) with (2x1g.day-1) soy oil (Control n = 9) or DHA-rich tuna fish oil (FO n = 11) providing DHA: 560 mg and EPA: 140 mg. The Omega-3 Index (O3I; erythrocyte membrane % EPA + DHA), heart rate (HR) and HR variability (HRV) were analyzed during rest, maximal isometric handgrip and cold diving reflex challenges at baseline and following 8 weeks. The baseline O3I (Control: 5.1 ± 1.0; FO: 5.4 ± 0.9; P > 0.05), resting HR (Control: 65 ± 12bpm; FO: 66 ± 8bpm; P > 0.05) and HRV metrics did not significantly differ between the groups prior to supplementation. Relative to the control group, the O3I was increased (Control: 5.0 ± 1.1; FO: 7.8 ± 1.2; P < 0.001), and resting HR was slowed in the FO group following supplementation (Control: 66 ± 9bpm; FO: 61 ± 6bpm; P = 0.046). However, no significant (P > 0.05) between-group differences were observed in HR responsiveness or any indices of HRV during reflex challenges. In young healthy adults, dietary achievable doses of ω-3 DHA-rich fish oil exerted a direct slowing effect on resting HR, without compromising the HR response to either dominant sympathetic or parasympathetic modulation.
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Affiliation(s)
- Michael J Macartney
- Graduate Medicine, School of Medicine, University of Wollongong, Wollongong, Australia.,Centre for Medical and Exercise Physiology, Faculty of Science Medicine and Health, University of Wollongong, Wollongong, Australia
| | - Mathew M Ghodsian
- Graduate Medicine, School of Medicine, University of Wollongong, Wollongong, Australia
| | - Bransen Noel-Gough
- Graduate Medicine, School of Medicine, University of Wollongong, Wollongong, Australia
| | - Peter L McLennan
- Graduate Medicine, School of Medicine, University of Wollongong, Wollongong, Australia.,Centre for Medical and Exercise Physiology, Faculty of Science Medicine and Health, University of Wollongong, Wollongong, Australia
| | - Gregory E Peoples
- Graduate Medicine, School of Medicine, University of Wollongong, Wollongong, Australia.,Centre for Medical and Exercise Physiology, Faculty of Science Medicine and Health, University of Wollongong, Wollongong, Australia
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You W, Li M, Qi Y, Wang Y, Chen Y, Liu Y, Li L, Ouyang H, Pang D. CRISPR/Cas9-Mediated Specific Integration of Fat-1 and IGF-1 at the p Rosa26 Locus. Genes (Basel) 2021; 12:genes12071027. [PMID: 34356043 PMCID: PMC8305104 DOI: 10.3390/genes12071027] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 06/28/2021] [Accepted: 06/28/2021] [Indexed: 01/24/2023] Open
Abstract
Many researchers have focused on knock-in pigs for site-specific integration, but little attention has been given to genetically modified pigs with the targeted integration of multiple recombinant genes. To establish a multigene targeted knock-in editing system, we used the internal ribosome entry site (IRES) and self-cleaving 2A peptide technology to construct a plasmid coexpressing the fatty acid desaturase (Fat-1) and porcine insulin-like growth factor-1 (IGF-1) genes at equal levels. In this study, pigs were genetically modified with multiple genes that were precisely inserted into the pRosa26 locus by using the clustered regularly spaced short palindrome repeat sequence (CRISPR)/CRISPR-related 9 (Cas9) system and somatic cell nuclear transfer technology (SCNT) in combination. Single copies of the Fat-1 and IGF-1 genes were expressed satisfactorily in various tissues of F0-generation pigs. Importantly, gas chromatography analysis revealed a significantly increased n-3 polyunsaturated fatty acid (PUFA) level in these genetically modified pigs, which led to a significant decrease of the n-6 PUFA/n-3 PUFA ratio from 6.982 to 3.122 (*** p < 0.001). In conclusion, the establishment of an editing system for targeted double-gene knock-in in this study provides a reference for the precise integration of multiple foreign genes and lays a foundation for the development of new transgenic pig breeds with multiple excellent phenotypes.
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Affiliation(s)
- Wenni You
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China; (W.Y.); (M.L.); (Y.Q.); (Y.W.); (Y.C.); (Y.L.); (L.L.); (H.O.)
| | - Mengjing Li
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China; (W.Y.); (M.L.); (Y.Q.); (Y.W.); (Y.C.); (Y.L.); (L.L.); (H.O.)
| | - Yilin Qi
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China; (W.Y.); (M.L.); (Y.Q.); (Y.W.); (Y.C.); (Y.L.); (L.L.); (H.O.)
| | - Yanbing Wang
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China; (W.Y.); (M.L.); (Y.Q.); (Y.W.); (Y.C.); (Y.L.); (L.L.); (H.O.)
| | - Yiwu Chen
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China; (W.Y.); (M.L.); (Y.Q.); (Y.W.); (Y.C.); (Y.L.); (L.L.); (H.O.)
| | - Ying Liu
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China; (W.Y.); (M.L.); (Y.Q.); (Y.W.); (Y.C.); (Y.L.); (L.L.); (H.O.)
| | - Li Li
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China; (W.Y.); (M.L.); (Y.Q.); (Y.W.); (Y.C.); (Y.L.); (L.L.); (H.O.)
| | - Hongsheng Ouyang
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China; (W.Y.); (M.L.); (Y.Q.); (Y.W.); (Y.C.); (Y.L.); (L.L.); (H.O.)
- Chongqing Research Institute, Jilin University, Chongqing 401123, China
| | - Daxin Pang
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China; (W.Y.); (M.L.); (Y.Q.); (Y.W.); (Y.C.); (Y.L.); (L.L.); (H.O.)
- Chongqing Research Institute, Jilin University, Chongqing 401123, China
- Correspondence: ; Tel.: +86-131-9437-3800
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Wang H, Chen J, Zhao L. N-3 polyunsaturated fatty acids for prevention of postoperative atrial fibrillation: updated meta-analysis and systematic review. J Interv Card Electrophysiol 2018; 51:105-115. [PMID: 29380237 DOI: 10.1007/s10840-018-0315-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Accepted: 01/18/2018] [Indexed: 10/18/2022]
Abstract
BACKGROUND OR PURPOSE N-3 polyunsaturated fatty acids (PUFA) have been postulated to have an anti-arrhythmic effect on postoperative atrial fibrillation (POAF), with conflicting results among studies. This study on pooled data evaluated the effect of PUFA on POAF among patients undergoing cardiac surgery. METHODS The Pubmed, EMBASE, and CENTRAL databases were searched without restriction on language for randomized controlled trials on the effect of PUFA on POAF that were published before August 31, 2017. The incidence of POAF was extracted as primary endpoint. Pooled data were assessed by using a random-effects model. RESULTS Out of 269 articles identified, 14 studies with 3570 patients were eligible and included in the meta-analysis. PUFA reduced incidence of POAF (RR 0.84 [95% CI 0.73-0.98], P = 0.03). The funnel plot and fail-safe number suggested insignificant publication bias. In sensitivity and subgroup analyses, (1) PUFA was effective in preventing POAF for eicosapentaenoic acid (EPA)/DHA < 1 (0.51 [0.36-0.73], P = 0.0003) but not EPA/DHA > 1 or unknown; (2) the efficacy in reducing POAF was apparent when placebo was usual care (0.59 [0.44-0.80], P = 0.0005), but not when placebo was non-fish oils; and (3) PUFA reduced POAF after CABG (0.68 [0.47-0.97], P = 0.03), but not other cardiac surgery. CONCLUSIONS PUFA appears to reduce the incidence of POAF. However, the said protective effect may be influenced by EPA/DHA ratio, with < 1 appearing preferable. PUFA efficacy on POAF prevention appeared insignificant when compared with non-fish oils and only apparent in the setting of CABG alone. Further studies are needed to confirm the effect of PUFA on POAF and to assess the proper use of PUFA against POAF.
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Affiliation(s)
- Hao Wang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, 241 West Huaihai Road, Shanghai, China
| | - Jindong Chen
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, 241 West Huaihai Road, Shanghai, China
| | - Liang Zhao
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, 241 West Huaihai Road, Shanghai, China.
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