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Buckner T, Vanderlinden LA, DeFelice BC, Carry PM, Kechris K, Dong F, Fiehn O, Frohnert BI, Clare-Salzler M, Rewers M, Norris JM. The oxylipin profile is associated with development of type 1 diabetes: the Diabetes Autoimmunity Study in the Young (DAISY). Diabetologia 2021; 64:1785-1794. [PMID: 33893822 PMCID: PMC8249332 DOI: 10.1007/s00125-021-05457-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 02/24/2021] [Indexed: 12/22/2022]
Abstract
AIMS/HYPOTHESIS Oxylipins are lipid mediators derived from polyunsaturated fatty acids. Some oxylipins are proinflammatory (e.g. those derived from arachidonic acid [ARA]), others are pro-resolving of inflammation (e.g. those derived from α-linolenic acid [ALA], docosahexaenoic acid [DHA] and eicosapentaenoic acid [EPA]) and others may be both (e.g. those derived from linoleic acid [LA]). The goal of this study was to examine whether oxylipins are associated with incident type 1 diabetes. METHODS We conducted a nested case-control analysis in the Diabetes Autoimmunity Study in the Young (DAISY), a prospective cohort study of children at risk of type 1 diabetes. Plasma levels of 14 ARA-derived oxylipins, ten LA-derived oxylipins, six ALA-derived oxylipins, four DHA-derived oxylipins and two EPA-related oxylipins were measured by ultra-HPLC-MS/MS at multiple timepoints related to autoantibody seroconversion in 72 type 1 diabetes cases and 71 control participants, which were frequency matched on age at autoantibody seroconversion (of the case), ethnicity and sample availability. Linear mixed models were used to obtain an age-adjusted mean of each oxylipin prior to type 1 diabetes. Age-adjusted mean oxylipins were tested for association with type 1 diabetes using logistic regression, adjusting for the high risk HLA genotype HLA-DR3/4,DQB1*0302. We also performed principal component analysis of the oxylipins and tested principal components (PCs) for association with type 1 diabetes. Finally, to investigate potential critical timepoints, we examined the association of oxylipins measured before and after autoantibody seroconversion (of the cases) using PCs of the oxylipins at those visits. RESULTS The ARA-related oxylipin 5-HETE was associated with increased type 1 diabetes risk. Five LA-related oxylipins, two ALA-related oxylipins and one DHA-related oxylipin were associated with decreased type 1 diabetes risk. A profile of elevated LA- and ALA-related oxylipins (PC1) was associated with decreased type 1 diabetes risk (OR 0.61; 95% CI 0.40, 0.94). A profile of elevated ARA-related oxylipins (PC2) was associated with increased diabetes risk (OR 1.53; 95% CI 1.03, 2.29). A critical timepoint analysis showed type 1 diabetes was associated with a high ARA-related oxylipin profile at post-autoantibody-seroconversion but not pre-seroconversion. CONCLUSIONS/INTERPRETATION The protective association of higher LA- and ALA-related oxylipins demonstrates the importance of both inflammation promotion and resolution in type 1 diabetes. Proinflammatory ARA-related oxylipins may play an important role once the autoimmune process has begun.
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Affiliation(s)
- Teresa Buckner
- University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | | | | | - Patrick M Carry
- University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | | | - Fran Dong
- University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | | | | | | | - Marian Rewers
- University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Jill M Norris
- University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
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Starčević K, Filipović N, Galan A, Micek V, Gudan Kurilj A, Mašek T. Hepatic Lipogenesis and Brain Fatty Acid Profile in Response to Different Dietary n6/n3 Ratios and DHA/EPA Supplementation in Streptozotocin Treated Rats. Mol Nutr Food Res 2018; 62:e1701007. [PMID: 29579359 DOI: 10.1002/mnfr.201701007] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 03/07/2018] [Indexed: 11/06/2022]
Abstract
SCOPE We investigated the interaction between streptozotocin (STZ)-induced diabetes and dietary n6/n3 ratio, and its influence on lipogenesis. METHODS AND RESULTS The animals were treated with STZ and fed with different dietary n6/n3 ratios: 1, 7, and 60, or supplemented with DHA/EPA. Gene expression was assessed by RT-PCR and protein expression by western blotting and immunohistochemistry. Fatty acid profile was determined by GC-MS. Pancreas and liver histology were assessed by hematoxylin and eosin (H&E) staining. STZ-induced characteristic changes in all STZ treated groups, including: increased blood glucose, decreased body mass, increased lipid peroxidation and CD36 expression, decreased 16:1n7 and 18:1n7, increases in 20:3n6, decreases in phospholipid (PL) content of 20:4n6, as well as decreases in the expression of SREBP1c, Δ-9-desaturase (Δ9D), and Δ-5-desaturase (Δ5D). Additionally, other changes occurred that were dependent on the n6/n3 ratio. Among the diabetic groups, the lower n6/n3 ratio caused higher lipid peroxidation and CD36 expression, a greater decrease in 20:4n6 and decreased Δ6-desaturase (Δ6D) expression, while the higher n6/n3 ratio caused increased partitioning of 20:4n6 into hepatic neutral lipids (NL), a decrease in 20:5n3 content, and increased β-oxidation. CONCLUSION Presented data suggest that the n6/n3 ratio could significantly influence lipogenesis, lipid peroxidation, and β-oxidation in STZ-induced diabetes, which could have clinical significance.
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Affiliation(s)
- Kristina Starčević
- Department of Animal Husbandry, University of Zagreb, Faculty of Veterinary Medicine, 10000, Zagreb, Croatia
| | - Natalija Filipović
- Department of Anatomy, Histology and Embryology, University of Split, School of Medicine, 21000, Split, Croatia
| | - Asier Galan
- VetMedZg ERA Chair project, University of Zagreb, Faculty of Veterinary Medicine, 10000, Zagreb, Croatia
| | - Vedran Micek
- Institute for Medical Research and Occupational Health, 10000, Zagreb, Croatia
| | - Andrea Gudan Kurilj
- Department of Veterinary Pathology, University of Zagreb, Faculty of Veterinary Medicine, 10000, Zagreb, Croatia
| | - Tomislav Mašek
- Department of Animal Nutrition and Dietetics, University of Zagreb, Faculty of Veterinary Medicine, 10000, Zagreb, Croatia
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Long-term streptozotocin diabetes impairs arachidonic and docosahexaenoic acid metabolism and ∆5 desaturation indices in aged rats. Exp Gerontol 2014; 60:140-6. [DOI: 10.1016/j.exger.2014.10.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Revised: 10/24/2014] [Accepted: 10/28/2014] [Indexed: 11/15/2022]
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Canetti L, Werner H, Leikin-Frenkel A. Linoleic and alpha linolenic acids ameliorate streptozotocin-induced diabetes in mice. Arch Physiol Biochem 2014; 120:34-9. [PMID: 24320056 DOI: 10.3109/13813455.2013.868002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
UNLABELLED Streptozotocin (STZ)-induced diabetes in mice progresses with decreased desaturase activities and alterations in the metabolism of essential fatty acids (EFA). OBJECTIVES Based on our previous studies with soybean oil that ameliorated the STZ damage in mice, we tested here the accountability of its main EFA components, i.e. linoleic acid (LA) and alpha linolenic acid (ALA), in the prevention of pancreas damage and Δ6 desaturase decrease. MATERIALS AND METHODS Seven days after injection with STZ and EFA gavage, ICR mice were sacrificed. Plasma glucose and insulin levels, pancreas histology and liver fatty acid desaturases were analysed. RESULTS EFA reduced pancreas damage, insulin and glucose plasma levels and restored Δ6 desaturase activity and mRNA expression levels. DISCUSSION By reducing pancreas damage, EFA ameliorated insulin levels, Δ6 desaturase and fatty acid metabolism. LA further enhanced Fads2 promoter activity. CONCLUSION EFA ameliorate STZ induced diabetes in mice.
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Affiliation(s)
- Lea Canetti
- Minerva Center for Cholesterol, Gallstones Research, and Lipid Metabolism in the Liver and
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Dayangac A, Gosselink KL, Yilmaz O. Fasting and postprandial conditions affect both fatty acids and lipid compositions in the hypothalamus and fat-soluble vitamins in the serum of male rats. ANIM BIOL 2012. [DOI: 10.1163/157075611x616897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The purpose of this study was to examine the effects of fasting and re-feeding on lipid derivative patterns in the hypothalamus, and on vitamin, cholesterol and malondialdehyde (MDA) levels in serum. Adult male Wistar albino rats were assigned (n = 6/group) as follows: normally-fed controls (CON), fasted for 24 h (24F), fasted for 48 h (48F), and fed normally for 2 d after fasting for 48 h (FAF). Biochemical measures were analyzed by gas chromatography (GC) and high performance liquid chromatography (HPLC). Our results demonstrate that hypothalamic saturated fatty acid (C16:0, C18:0) levels were lower, and unsaturated fatty acid (C22:6 n-3, C22:4 n-6, C20:4 n-6) levels were higher, in the 48F and FAF groups than in CON (). In addition, hypothalamic monounsaturated fatty acid (MUFA) levels were lower, and polyunsaturated fatty acids (PUFA) levels were higher, in 24F than in CON. Total hypothalamic lipids in both 24F and 48F were higher than CON, and cholesterol was elevated in the hypothalami of all experimental groups as compared to CON. Serum malondialdehyde was higher in fasted and FAF groups; 24F and 48F also had higher serum cholesterol levels, than CON (, ). Serum α-tocoferol, retinol and vitamin C values were lower in 48F than CON (). In conclusion, we demonstrate that feeding state can significantly alter brain fatty acid and lipid derivative levels, and serum concentrations of cholesterol and vitamins. These changes may consequently influence lipid peroxidation, fatty acid synthase or desaturase system in hypothalamic fields.
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Affiliation(s)
- Alpaslan Dayangac
- Ahi Evran University, Art And Science Faculty, Department of Biology, 40100 Kirsehir, Turkey
| | - Kristin Leigh Gosselink
- The University of Texas at El Paso, Department of Biological Sciences and Border Biomedical Research Center, El Paso, TX 79968, USA
| | - Okkes Yilmaz
- Firat University, Faculty of Science, Department of Biology, 23169- Elazig, Turkey
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Miranda DTSZ, Batista VG, Grando FCC, Paula FM, Felício CA, Rubbo GFS, Fernandes LC, Curi R, Nishiyama A. Soy lecithin supplementation alters macrophage phagocytosis and lymphocyte response to concanavalin A: a study in alloxan-induced diabetic rats. Cell Biochem Funct 2009; 26:859-65. [PMID: 18846580 DOI: 10.1002/cbf.1517] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Dietary soy lecithin supplementation decreases hyperlipidemia and influences lipid metabolism. Although this product is used by diabetic patients, there are no data about the effect of soy lecithin supplementation on the immune system. The addition of phosphatidylcholine, the main component of lecithin, to a culture of lymphocytes has been reported to alter their function. If phosphatidylcholine changes lymphocyte functions in vitro as previously shown, then it could also affect immune cells in vivo. In the present study, the effect of dietary soy lecithin on macrophage phagocytic capacity and on lymphocyte number in response to concanavalin A (ConA) stimulation was investigated in non-diabetic and alloxan-induced diabetic rats. Supplementation was carried out daily with 2 g kg(-1) b.w. lecithin during 7 days. After that, blood was drawn from fasting rats and peritoneal macrophages and mesenteric lymph node lymphocytes were collected to determine the phospholipid content. Plasma triacylglycerol (TAG), total and HDL cholesterol and glucose levels were also determined. Lymphocytes were stimulated by ConA. The MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) dye reduction method and flow cytometry were employed to evaluate lymphocyte metabolism and cell number, respectively. Soy lecithin supplementation significantly increased both macrophage phagocytic capacity (+29%) in non-diabetic rats and the lymphocyte number in diabetic rats (+92%). It is unlikely that plasma lipid levels indirectly affect immune cells, since plasma cholesterol, TAG, or phospholipid content was not modified by lecithin supplementation. In conclusion, lymphocyte and macrophage function were altered by lecithin supplementation, indicating an immunomodulatory effect of phosphatidylcholine.
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Affiliation(s)
- Dalva T S Z Miranda
- Department of Physiology, Universidade Federal do Paraná, Curitiba, PR, Brazil
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