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Ben Necib R, Manca C, Lacroix S, Martin C, Flamand N, Di Marzo V, Silvestri C. Hemp seed significantly modulates the endocannabinoidome and produces beneficial metabolic effects with improved intestinal barrier function and decreased inflammation in mice under a high-fat, high-sucrose diet as compared with linseed. Front Immunol 2022; 13:882455. [PMID: 36238310 PMCID: PMC9552265 DOI: 10.3389/fimmu.2022.882455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 08/16/2022] [Indexed: 11/13/2022] Open
Abstract
Omega-3 fatty acids support cardiometabolic health and reduce chronic low-grade inflammation. These fatty acids may impart their health benefits partly by modulating the endocannabinoidome and the gut microbiome, both of which are key regulators of metabolism and the inflammatory response. Whole hemp seeds (Cannabis sativa) are of exceptional nutritional value, being rich in omega-3 fatty acids. We assessed the effects of dietary substitution (equivalent to about 2 tablespoons of seeds a day for humans) of whole hemp seeds in comparison with whole linseeds in a diet-induced obesity mouse model and determined their effects on obesity and the gut microbiome-endocannabinoidome axis. We show that whole hemp seed substitution did not affect weigh gain, adiposity, or food intake, whereas linseed substitution did, in association with higher fasting glucose levels, greater insulin release during an oral glucose tolerance test, and higher levels of liver triglycerides than controls. Furthermore, hemp seed substitution mitigated diet-induced obesity-associated increases in intestinal permeability and circulating PAI-1 levels, while having no effects on markers of inflammation in epididymal adipose tissue, which were, however, increased in mice fed linseeds. Both hemp seeds and linseeds were able to modify the expression of several endocannabinoidome genes and markedly increased the levels of several omega-3 fatty acid–derived endocannabinoidome bioactive lipids with previously suggested anti-inflammatory actions in a tissue specific manner, despite the relatively low level of seed substitution. While neither diet markedly modified the gut microbiome, mice on the hemp seed diet had higher abundance of Clostridiaceae 1 and Rikenellaceae than mice fed linseed or control diet, respectively. Thus, hemp seed-containing foods might represent a source of healthy fats that are not likely to exacerbate the metabolic consequences of obesogenic diets while producing intestinal permeability protective effects and some anti-inflammatory actions.
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Affiliation(s)
- Rim Ben Necib
- Centre De Recherche De l’Institut Universitaire De Cardiologie Et De Pneumologie De Québec (IUCPQ), Quebec, QC, Canada
- Département De Médecine, Faculté de Médecine, Université Laval, Quebec, QC, Canada
- Institut Sur La Nutrition Et Les Aliments Fonctionnels (INAF), Quebec, QC, Canada
- Canada Research Excellence Chair in the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Quebec, QC, Canada
| | - Claudia Manca
- Centre De Recherche De l’Institut Universitaire De Cardiologie Et De Pneumologie De Québec (IUCPQ), Quebec, QC, Canada
- Département De Médecine, Faculté de Médecine, Université Laval, Quebec, QC, Canada
- Institut Sur La Nutrition Et Les Aliments Fonctionnels (INAF), Quebec, QC, Canada
- Canada Research Excellence Chair in the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Quebec, QC, Canada
| | - Sébastien Lacroix
- Institut Sur La Nutrition Et Les Aliments Fonctionnels (INAF), Quebec, QC, Canada
- Canada Research Excellence Chair in the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Quebec, QC, Canada
| | - Cyril Martin
- Centre De Recherche De l’Institut Universitaire De Cardiologie Et De Pneumologie De Québec (IUCPQ), Quebec, QC, Canada
- Canada Research Excellence Chair in the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Quebec, QC, Canada
| | - Nicolas Flamand
- Centre De Recherche De l’Institut Universitaire De Cardiologie Et De Pneumologie De Québec (IUCPQ), Quebec, QC, Canada
- Département De Médecine, Faculté de Médecine, Université Laval, Quebec, QC, Canada
- Canada Research Excellence Chair in the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Quebec, QC, Canada
| | - Vincenzo Di Marzo
- Centre De Recherche De l’Institut Universitaire De Cardiologie Et De Pneumologie De Québec (IUCPQ), Quebec, QC, Canada
- Département De Médecine, Faculté de Médecine, Université Laval, Quebec, QC, Canada
- Institut Sur La Nutrition Et Les Aliments Fonctionnels (INAF), Quebec, QC, Canada
- Canada Research Excellence Chair in the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Quebec, QC, Canada
- École de nutrition, Faculté Des Sciences De l’Agriculture Et De l’Alimentation (FSAA), Université Laval, Quebec, QC, Canada
- Centre Nutrition, Santé et Société (NUTRISS), Université Laval, Quebec, QC, Canada
| | - Cristoforo Silvestri
- Centre De Recherche De l’Institut Universitaire De Cardiologie Et De Pneumologie De Québec (IUCPQ), Quebec, QC, Canada
- Département De Médecine, Faculté de Médecine, Université Laval, Quebec, QC, Canada
- Canada Research Excellence Chair in the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Quebec, QC, Canada
- Centre Nutrition, Santé et Société (NUTRISS), Université Laval, Quebec, QC, Canada
- *Correspondence: Cristoforo Silvestri,
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Prasad P, Anjali P, Sreedhar RV. Plant-based stearidonic acid as sustainable source of omega-3 fatty acid with functional outcomes on human health. Crit Rev Food Sci Nutr 2020; 61:1725-1737. [PMID: 32431176 DOI: 10.1080/10408398.2020.1765137] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Dietary omega-3 long chain polyunsaturated fatty acids (n-3 LC-PUFA) like eicosapentaenoic acid (EPA, 20:5n-3) and docosahexaenoic acid (DHA, 22:6n-3) are known to be potent biological regulators with therapeutic and preventive effects on human health. Many global health organizations have recommended consuming marine based omega-3 sources for neonatal brain development and reducing the risk of various chronic diseases. However, due to concerns regarding the origin, sustainable supply and safety of the marine sources, alternative n-3 PUFA sources are being explored. Recently, plant-based omega-3 sources are gaining much importance because of their sustainable supply and dietary acceptance. α-linolenic acid (ALA, 18:3n-3) rich seed oils are the major omega-3 fatty acid source available for human consumption. But, efficiency of conversion of ALA to n-3 LC-PUFAs in humans is limited due to a rate-limiting step in the n-3 pathway catalyzed by Δ6-desaturase. Botanical stearidonic acid (SDA, 18:4n-3) rich oils are emerging as a sustainable omega-3 source with efficient conversion rate to n-3 LC-PUFA especially to EPA, as it bypasses the Δ6-desaturase rate limiting step. Several recent studies have identified the major plant sources of SDA and explored its potential health benefits and preventive roles in inflammation, cardiovascular disease (CVD) and cancer. This systematic review summarizes the current state of knowledge on the sources, nutraceutical roles, food-based applications and the future perspectives of botanical SDA.
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Affiliation(s)
- P Prasad
- Plant Cell Biotechnology Department, CSIR-Central Food Technological Research Institute (CSIR-CFTRI), Mysuru, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - P Anjali
- Plant Cell Biotechnology Department, CSIR-Central Food Technological Research Institute (CSIR-CFTRI), Mysuru, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - R V Sreedhar
- Plant Cell Biotechnology Department, CSIR-Central Food Technological Research Institute (CSIR-CFTRI), Mysuru, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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Mosińska P, Martín-Ruiz M, González A, López-Miranda V, Herradón E, Uranga JA, Vera G, Sánchez-Yáñez A, Martín-Fontelles MI, Fichna J, Abalo R. Changes in the diet composition of fatty acids and fiber affect the lower gastrointestinal motility but have no impact on cardiovascular parameters: In vivo and in vitro studies. Neurogastroenterol Motil 2019; 31:e13651. [PMID: 31145538 DOI: 10.1111/nmo.13651] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 04/30/2019] [Accepted: 05/17/2019] [Indexed: 02/08/2023]
Abstract
BACKGROUND Food and diet are central issues for proper functioning of the cardiovascular (CV) system and gastrointestinal (GI) tract. We hypothesize that different types of dietary FAs affect CV parameters as well as GI motor function and visceral sensitivity. METHODS Male Wistar rats were fed with control diet (CTRL), diet supplemented with 7% soybean oil (SOY), SOY + 3.5% virgin coconut oil (COCO), and SOY + 3.5% evening primrose oil (EP) for 4 weeks. The content of insoluble fiber in CTRL was higher than in SOY, COCO, or EP. Body weight gain and food/water intake were measured. At day 28, biometric, biochemical, CV parameters, GI motor function (X-ray and colon bead expulsion test), and visceral sensitivity were evaluated. Changes in propulsive colonic activity were determined in vitro. The colon and adipose tissue were histologically studied; the number of mast cells (MCs) in the colon was calculated. RESULTS SOY, COCO, and EP had increased body weight gain but decreased food intake vs CTRL. Water consumption, biometric, biochemical, and CV parameters were comparable between groups. SOY increased the sensitivity to colonic distention. All groups maintained regular propulsive neurogenic contractions; EP delayed colonic motility (P < 0.01). SOY, COCO, and EP displayed decreased size of the cecum, lower number and size of fecal pellets, and higher infiltration of MCs to the colon (P < 0.001). CONCLUSIONS AND INFERENCES Dietary FAs supplementation and lower intake of insoluble fiber can induce changes in the motility of the lower GI tract, in vivo and in vitro, but CV function and visceral sensitivity are not generally affected.
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Affiliation(s)
- Paula Mosińska
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | - Marta Martín-Ruiz
- Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, Spain
| | - Antonio González
- Departamento de Ciencias Básicas de la Salud, Facultad de Ciencias de la Salud, Universidad Rey Juan Carlos, Alcorcón, Spain
| | - Visitación López-Miranda
- Departamento de Ciencias Básicas de la Salud, Facultad de Ciencias de la Salud, Universidad Rey Juan Carlos, Alcorcón, Spain.,Unidad Asociada al Instituto de Química Medica (IQM) del Consejo Superior de Investigaciones Científicas (CSIC), Universidad Rey Juan Carlos, Alcorcón, Spain
| | - Esperanza Herradón
- Departamento de Ciencias Básicas de la Salud, Facultad de Ciencias de la Salud, Universidad Rey Juan Carlos, Alcorcón, Spain.,Unidad Asociada al Instituto de Química Medica (IQM) del Consejo Superior de Investigaciones Científicas (CSIC), Universidad Rey Juan Carlos, Alcorcón, Spain
| | - José A Uranga
- Departamento de Ciencias Básicas de la Salud, Facultad de Ciencias de la Salud, Universidad Rey Juan Carlos, Alcorcón, Spain
| | - Gema Vera
- Departamento de Ciencias Básicas de la Salud, Facultad de Ciencias de la Salud, Universidad Rey Juan Carlos, Alcorcón, Spain.,Unidad Asociada al Instituto de Química Medica (IQM) del Consejo Superior de Investigaciones Científicas (CSIC), Universidad Rey Juan Carlos, Alcorcón, Spain
| | - Adrián Sánchez-Yáñez
- Departamento de Ciencias Básicas de la Salud, Facultad de Ciencias de la Salud, Universidad Rey Juan Carlos, Alcorcón, Spain
| | - Mª Isabel Martín-Fontelles
- Departamento de Ciencias Básicas de la Salud, Facultad de Ciencias de la Salud, Universidad Rey Juan Carlos, Alcorcón, Spain.,Unidad Asociada al Instituto de Química Medica (IQM) del Consejo Superior de Investigaciones Científicas (CSIC), Universidad Rey Juan Carlos, Alcorcón, Spain
| | - Jakub Fichna
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | - Raquel Abalo
- Departamento de Ciencias Básicas de la Salud, Facultad de Ciencias de la Salud, Universidad Rey Juan Carlos, Alcorcón, Spain.,Unidad Asociada al Instituto de Química Medica (IQM) del Consejo Superior de Investigaciones Científicas (CSIC), Universidad Rey Juan Carlos, Alcorcón, Spain
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Li Y, Rong Y, Bao L, Nie B, Ren G, Zheng C, Amin R, Arnold RD, Jeganathan RB, Huggins KW. Suppression of adipocyte differentiation and lipid accumulation by stearidonic acid (SDA) in 3T3-L1 cells. Lipids Health Dis 2017; 16:181. [PMID: 28946872 PMCID: PMC5613458 DOI: 10.1186/s12944-017-0574-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 09/20/2017] [Indexed: 12/02/2022] Open
Abstract
Background Increased consumption of omega-3 (ω-3) fatty acids found in cold-water fish and fish oil has been reported to protect against obesity. A potential mechanism may be through reduction in adipocyte differentiation. Stearidonic acid (SDA), a plant-based ω-3 fatty acid, has been targeted as a potential surrogate for fish-based fatty acids; however, its role in adipocyte differentiation is unknown. This study was designed to evaluate the effects of SDA on adipocyte differentiation in 3T3-L1 cells. Methods 3T3-L1 preadipocytes were differentiated in the presence of SDA or vehicle-control. Cell viability assay was conducted to determine potential toxicity of SDA. Lipid accumulation was measured by Oil Red O staining and triglyceride (TG) quantification in differentiated 3T3-L1 adipocytes. Adipocyte differentiation was evaluated by adipogenic transcription factors and lipid accumulation gene expression by quantitative real-time polymerase chain reaction (qRT-PCR). Fatty acid analysis was conducted by liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS). Results 3T3-L1 cells treated with SDA were viable at concentrations used for all studies. SDA treatment reduced lipid accumulation in 3T3-L1 adipocytes. This anti-adipogenic effect by SDA was a result of down-regulation of mRNA levels of the adipogenic transcription factors CCAAT/enhancer-binding proteins alpha and beta (C/EBPα, C/EBPβ), peroxisome proliferator-activated receptor gamma (PPARγ), and sterol-regulatory element binding protein-1c (SREBP-1c). SDA treatment resulted in decreased expression of the lipid accumulation genes adipocyte fatty-acid binding protein (AP2), fatty acid synthase (FAS), stearoyl-CoA desaturase (SCD-1), lipoprotein lipase (LPL), glucose transporter 4 (GLUT4) and phosphoenolpyruvate carboxykinase (PEPCK). The transcriptional activity of PPARγ was found to be decreased with SDA treatment. SDA treatment led to significant EPA enrichment in 3T3-L1 adipocytes compared to vehicle-control. Conclusion These results demonstrated that SDA can suppress adipocyte differentiation and lipid accumulation in 3T3-L1 cells through down-regulation of adipogenic transcription factors and genes associated with lipid accumulation. This study suggests the use of SDA as a dietary treatment for obesity. Electronic supplementary material The online version of this article (10.1186/s12944-017-0574-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yueru Li
- Department of Nutrition, Dietetics and Hospitality Management, Auburn University, Auburn, AL, USA
| | - Yinghui Rong
- Department of Nutrition, Dietetics and Hospitality Management, Auburn University, Auburn, AL, USA
| | - Lisui Bao
- Department of Nutrition, Dietetics and Hospitality Management, Auburn University, Auburn, AL, USA
| | - Ben Nie
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - Guang Ren
- Department of Nutrition, Dietetics and Hospitality Management, Auburn University, Auburn, AL, USA
| | - Chen Zheng
- Department of Nutrition, Dietetics and Hospitality Management, Auburn University, Auburn, AL, USA
| | - Rajesh Amin
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA.,Boshell Diabetes and Metabolic Diseases Research Program, Auburn University, Auburn, AL, USA
| | - Robert D Arnold
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA.,Boshell Diabetes and Metabolic Diseases Research Program, Auburn University, Auburn, AL, USA
| | - Ramesh B Jeganathan
- Department of Nutrition, Dietetics and Hospitality Management, Auburn University, Auburn, AL, USA.,Boshell Diabetes and Metabolic Diseases Research Program, Auburn University, Auburn, AL, USA
| | - Kevin W Huggins
- Department of Nutrition, Dietetics and Hospitality Management, Auburn University, Auburn, AL, USA. .,Boshell Diabetes and Metabolic Diseases Research Program, Auburn University, Auburn, AL, USA.
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Abeywardena MY, Adams M, Dallimore J, Kitessa SM. Rise in DPA Following SDA-Rich Dietary Echium Oil Less Effective in Affording Anti-Arrhythmic Actions Compared to High DHA Levels Achieved with Fish Oil in Sprague-Dawley Rats. Nutrients 2016; 8:nu8010014. [PMID: 26742064 PMCID: PMC4728628 DOI: 10.3390/nu8010014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 12/17/2015] [Accepted: 12/18/2015] [Indexed: 11/16/2022] Open
Abstract
Stearidonic acid (SDA; C18:4n-3) has been suggested as an alternative to fish oil (FO) for delivering health benefits of C ≥ 20 long-chain n-3 polyunsaturated fatty acids (LC n-3 PUFA). Echium oil (EO) represents a non-genetically-modified source of SDA available commercially. This study compared EO and FO in relation to alterations in plasma and tissue fatty acids, and for their ability to afford protection against ischemia-induced cardiac arrhythmia and ventricular fibrillation (VF). Rats were fed (12 weeks) diets supplemented with either EO or FO at three dose levels (1, 3 and 5% w/w; n = 18 per group). EO failed to influence C22:6n-3 (DHA) but increased C22:5n-3 (DPA) in tissues dose-dependently, especially in heart tissue. Conversely, DHA in hearts of FO rats showed dose-related elevation; 14.8%-24.1% of total fatty acids. Kidney showed resistance for incorporation of LC n-3 PUFA. Overall, FO provided greater cardioprotection than EO. At the highest dose level, FO rats displayed lower (p < 0.05) episodes of VF% (29% vs. 73%) and duration (22.7 ± 12.0 vs. 75.8 ± 17.1 s) than the EO group but at 3% EO was comparable to FO. We conclude that there is no endogenous conversion of SDA to DHA, and that DPA may be associated with limited cardiac benefit.
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Affiliation(s)
- Mahinda Y Abeywardena
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Food & Nutrition, Kintore Ave, Adelaide SA 5000, Australia.
| | - Michael Adams
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Food & Nutrition, Kintore Ave, Adelaide SA 5000, Australia.
| | - Julie Dallimore
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Food & Nutrition, Kintore Ave, Adelaide SA 5000, Australia.
| | - Soressa M Kitessa
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Food & Nutrition, Kintore Ave, Adelaide SA 5000, Australia.
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Effects of Dietary Brazilian Palm Oil (Mauritia flexuosa L.) on Cholesterol Profile and Vitamin A and E Status of Rats. Molecules 2015; 20:9054-70. [PMID: 25996211 PMCID: PMC6272516 DOI: 10.3390/molecules20059054] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 05/06/2015] [Accepted: 05/11/2015] [Indexed: 11/30/2022] Open
Abstract
In vitro studies have been carried out to establish the nutritional differences between crude and refined vegetable oils; however, the impact of the consumption of these foods on metabolism, in particular the effect of buriti oil, needs to be further evaluated. The aim of this study was to evaluate the biochemical and murine parameters and the vitamin A and E status in young rats fed with diets supplemented with crude or refined buriti oil. The animals (n = 30) were randomized into three groups receiving diet added of soybean oil (control), crude buriti oil (CBO) and refined buriti oil (RBO) for 28 days. Rats fed with diet added of refined buriti oil (RBO) showed reduced total cholesterol (up to 60.27%), LDL (64.75%), triglycerides (55.47%) and enzyme aspartate transaminase (21.57%) compared to those fed with diet added of crude oil. Serum and hepatic retinol and tocopherol were higher by two to three times in CBO and RBO groups compared to the control group, but no differences were observed for murine parameters. The results indicate that buriti oil is an important source of the antioxidant vitamins A and E, and refined buriti oil is suggested as alternative to improve the lipid profile of healthy rats.
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Shinagawa FB, Santana FCD, Mancini-Filho J. Efeito do óleo de semente de uva prensado a frio nos marcadores bioquímicos e perfil inflamatório de ratos. REV NUTR 2015. [DOI: 10.1590/1415-52732015000100006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Objetivo: O objetivo deste trabalho foi avaliar o efeito do consumo crônico do óleo de semente de uva, obtido do mercado brasileiro, nos marcadores bioquímicos e inflamatórios de ratos saudáveis. Métodos: Ratos Wistar, recém-desmamados e saudáveis, receberam por 65 dias óleo de semente de uva e soja em duas concentrações (3 e 6 mL/kg de peso corporal). Os parâmetros avaliados foram a ingestão alimentar, peso corporal e dos tecidos hepático, cerebral e adiposo retroperitonial; neste último, foi ainda realizado o perfil de ácidos graxos. A análise dos parâmetros bioquímicos, peroxidação lipídica e perfil inflamatório através da quantificação das citocinas TNF-α, IL-10 e IL-6 foi realizada no soro. Resultados: O óleo de semente de uva, independentemente da dose administrada, promoveu maior acúmulo de gordura no tecido hepático e aumento nos níveis de peroxidação lipídica do soro. Verificou-se que, quando consumido na maior dose, houve maior incorporação do ácido graxo linoleico no tecido adiposo retroperitonial. Modificações nos parâmetros bioquímicos e inflamatórios séricos não foram observadas. Conclusão: O consumo de óleo de semente de uva não provocou alterações metabólicas significantes em nenhuma das doses administradas ainda que se tenha observado uma elevação nos níveis de peroxidação lipídica sérica.
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Chen G, Qu S, Wang Q, Bian F, Peng Z, Zhang Y, Ge H, Yu J, Xuan N, Bi Y, He Q. Transgenic expression of delta-6 and delta-15 fatty acid desaturases enhances omega-3 polyunsaturated fatty acid accumulation in Synechocystis sp. PCC6803. BIOTECHNOLOGY FOR BIOFUELS 2014; 7:32. [PMID: 24581179 PMCID: PMC3941260 DOI: 10.1186/1754-6834-7-32] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Accepted: 02/12/2014] [Indexed: 05/09/2023]
Abstract
BACKGROUND Polyunsaturated fatty acids (PUFAs), which contain two or more double bonds in their backbone, are the focus of intensive global research, because of their nutritional value, medicinal applications, and potential use as biofuel. However, the ability to produce these economically important compounds is limited, because it is both expensive and technically challenging to separate omega-3 polyunsaturated fatty acids (ω-3 PUFAs) from natural oils. Although the biosynthetic pathways of some plant and microalgal ω-3 PUFAs have been deciphered, current understanding of the correlation between fatty acid desaturase content and fatty acid synthesis in Synechocystis sp. PCC6803 is incomplete. RESULTS We constructed a series of homologous vectors for the endogenous and exogenous expression of Δ6 and Δ15 fatty acid desaturases under the control of the photosynthesis psbA2 promoter in transgenic Synechocystis sp. PCC6803. We generated six homologous recombinants, harboring various fatty acid desaturase genes from Synechocystis sp. PCC6803, Gibberella fujikuroi and Mortierella alpina. These lines produced up to 8.9 mg/l of α-linolenic acid (ALA) and 4.1 mg/l of stearidonic acid (SDA), which are more than six times the corresponding wild-type levels, at 20°C and 30°C. Thus, transgenic expression of Δ6 and Δ15 fatty acid desaturases enhances the accumulation of specific ω-3 PUFAs in Synechocystis sp. PCC6803. CONCLUSIONS In the blue-green alga Synechocystis sp. PCC6803, overexpression of endogenous and exogenous genes encoding PUFA desaturases markedly increased accumulation of ALA and SDA and decreased accumulation of linoleic acid and γ-linolenic acid. This study lays the foundation for increasing the fatty acid content of cyanobacteria and, ultimately, for producing nutritional and medicinal products with high levels of essential ω-3 PUFAs.
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Affiliation(s)
- Gao Chen
- Biotechnology Research Center, Shandong Academy of Agricultural Sciences, Jinan 250100, P. R. China
- Shandong Provincial Key Laboratory of Genetic Improvement, Ecology and Physiology of Crops, Jinan 250100, P. R. China
| | - Shujie Qu
- Test Base Service Center, Shandong Academy of Agricultural Sciences, Jinan 250100, P. R. China
| | - Qiang Wang
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China
| | - Fei Bian
- Biotechnology Research Center, Shandong Academy of Agricultural Sciences, Jinan 250100, P. R. China
- Shandong Provincial Key Laboratory of Genetic Improvement, Ecology and Physiology of Crops, Jinan 250100, P. R. China
| | - Zhenying Peng
- Biotechnology Research Center, Shandong Academy of Agricultural Sciences, Jinan 250100, P. R. China
- Shandong Provincial Key Laboratory of Genetic Improvement, Ecology and Physiology of Crops, Jinan 250100, P. R. China
| | - Yan Zhang
- Biotechnology Research Center, Shandong Academy of Agricultural Sciences, Jinan 250100, P. R. China
- Shandong Provincial Key Laboratory of Genetic Improvement, Ecology and Physiology of Crops, Jinan 250100, P. R. China
| | - Haitao Ge
- School of Life Science, Shandong University, Jinan 250100, P. R. China
| | - Jinhui Yu
- Biotechnology Research Center, Shandong Academy of Agricultural Sciences, Jinan 250100, P. R. China
- Shandong Provincial Key Laboratory of Genetic Improvement, Ecology and Physiology of Crops, Jinan 250100, P. R. China
| | - Ning Xuan
- Biotechnology Research Center, Shandong Academy of Agricultural Sciences, Jinan 250100, P. R. China
- Shandong Provincial Key Laboratory of Genetic Improvement, Ecology and Physiology of Crops, Jinan 250100, P. R. China
| | - Yuping Bi
- Biotechnology Research Center, Shandong Academy of Agricultural Sciences, Jinan 250100, P. R. China
- Shandong Provincial Key Laboratory of Genetic Improvement, Ecology and Physiology of Crops, Jinan 250100, P. R. China
| | - Qingfang He
- Biotechnology Research Center, Shandong Academy of Agricultural Sciences, Jinan 250100, P. R. China
- Shandong Provincial Key Laboratory of Genetic Improvement, Ecology and Physiology of Crops, Jinan 250100, P. R. China
- Department of Applied Science, University of Arkansas, Little Rock, Arkansas 72204, USA
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