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Musazadeh V, Morovatshoar R, Kavyani Z, Vajdi M, Askari G. Effects of flaxseed supplementation on inflammatory biomarkers: A GRADE-assessed systematic review and meta-analysis of randomized controlled trials. Prostaglandins Other Lipid Mediat 2024; 174:106868. [PMID: 38971216 DOI: 10.1016/j.prostaglandins.2024.106868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 06/25/2024] [Accepted: 06/28/2024] [Indexed: 07/08/2024]
Abstract
Several studies reported the benefits of flaxseed on inflammatory biomarkers, while others reported conflicting findings. Thus, the aim of this meta-analysis was to assess the impacts of flaxseed on inflammatory biomarkers in adults. Databases including Embase, PubMed, Scopus, and Web of Sciences were searched till February 2024. The 54 RCTs were included in the final analysis, which involved 3000 individuals from 12 countries. Overall, the flaxseed supplementation had a significant reduction in C-reactive protein (CRP) (SMD = -0.46; 95 % CI: -0.70, -0.23, P < 0.001; I2 = 82.9 %, P < 0.001), and interleukin 6 (IL-6) (SMD = -0.64, 95 % CI: -1.13, -0.16, P = 0.010; I2 = 92.7, P < 0.001). Furthermore, flaxseed did not significantly change the concentration of tumor necrosis factor α (TNF-α) (SMD = -0.17; 95 % CI: -0.63, 0.29, P = 0.467; I2 = 92, P < 0.001). Flaxseed supplementation significantly decreased serum concentrations of CRP and IL-6, but not TNF-a. Thus, this meta-analysis suggests that the current evidence supports the potential benefits of flaxseed in managing inflammatory conditions.
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Affiliation(s)
- Vali Musazadeh
- Student Research Committee, School of Public Health, Iran University of Medical Sciences, Tehran, the Islamic Republic of Iran; Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, the Islamic Republic of Iran
| | - Reza Morovatshoar
- Molecular Medicine Research Center, Hormozgan Health Institute, Hormozgan University of Medical Sciences, Bandar Abbas, the Islamic Republic of Iran
| | - Zeynab Kavyani
- Student Research Committee, Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, National Nutrition & Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, the Islamic Republic of Iran
| | - Mahdi Vajdi
- Student Research Committee, Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, the Islamic Republic of Iran.
| | - Gholamreza Askari
- Department of Community Nutrition, School of Nutrition and Food Science, Nutrition and Food Security Research Center, Isfahan University of Medical Science, Isfahan, the Islamic Republic of Iran.
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Abdulghani MF, Al-Fayyadh S. Natural products for managing metabolic syndrome: a scoping review. Front Pharmacol 2024; 15:1366946. [PMID: 38746011 PMCID: PMC11091304 DOI: 10.3389/fphar.2024.1366946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 04/11/2024] [Indexed: 05/16/2024] Open
Abstract
Introduction Metabolic syndrome comprises a collection of metabolic disorders stemming from factors like genetic predisposition, inadequate nutrition, stress, decreased physical activity, aging, and ethnicity. Although traditional pharmaceutical treatments exist for metabolic syndrome, their limited popularity is attributed to high costs and adverse effects. Consequently, natural products with fewer side effects have been explored for managing this condition. This literature review aims to explore the role of natural products including herbs, botanicals, vitamins, minerals, probiotics, and dietary supplements in managing metabolic syndrome. Methods This scoping review was conducted in five steps, involving the formulation of a research question, the retrieval and extraction of relevant studies, the selection of pertinent studies, the organization of information into tables, and the reporting of results. Data was collected from various databases including Embase, Science Direct, PubMed, Google Scholar, Scopus, and Web of Science, with a focus on studies published from 2010 to the present, available in English and with full-text accessibility. Results We identified 1,259 articles, screened their titles, abstracts, and full texts, ultimately incorporating 169 pertinent articles into this review (comprising 90 review articles, 32 trial articles, 6 in vitro articles, 38 in vivo articles, 1 experimental article and 2 observational articles). The study's outcomes revealed that natural products, encompassing plants and their derivatives, vitamins and supplements, as well as probiotics, can exert a beneficial influence on metabolic syndrome by regulating blood sugar, blood pressure, lipid profiles, obesity, and abnormal cholesterol and triglyceride levels. Conclusion The current study underscores the significance of natural products in addressing metabolic syndrome. Consequently, it is advisable to conduct further extensive research to assess the efficacy of these products, potentially integrating them into treatment regimens for individuals with metabolic syndrome.
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Abdulghani MF, Al-Fayyadh S. Natural products for managing metabolic syndrome: a scoping review. Front Pharmacol 2024; 15. [DOI: https:/doi.org/10.3389/fphar.2024.1366946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/19/2024] Open
Abstract
IntroductionMetabolic syndrome comprises a collection of metabolic disorders stemming from factors like genetic predisposition, inadequate nutrition, stress, decreased physical activity, aging, and ethnicity. Although traditional pharmaceutical treatments exist for metabolic syndrome, their limited popularity is attributed to high costs and adverse effects. Consequently, natural products with fewer side effects have been explored for managing this condition. This literature review aims to explore the role of natural products including herbs, botanicals, vitamins, minerals, probiotics, and dietary supplements in managing metabolic syndrome.MethodsThis scoping review was conducted in five steps, involving the formulation of a research question, the retrieval and extraction of relevant studies, the selection of pertinent studies, the organization of information into tables, and the reporting of results. Data was collected from various databases including Embase, Science Direct, PubMed, Google Scholar, Scopus, and Web of Science, with a focus on studies published from 2010 to the present, available in English and with full-text accessibility.ResultsWe identified 1,259 articles, screened their titles, abstracts, and full texts, ultimately incorporating 169 pertinent articles into this review (comprising 90 review articles, 32 trial articles, 6 in vitro articles, 38 in vivo articles, 1 experimental article and 2 observational articles). The study’s outcomes revealed that natural products, encompassing plants and their derivatives, vitamins and supplements, as well as probiotics, can exert a beneficial influence on metabolic syndrome by regulating blood sugar, blood pressure, lipid profiles, obesity, and abnormal cholesterol and triglyceride levels.ConclusionThe current study underscores the significance of natural products in addressing metabolic syndrome. Consequently, it is advisable to conduct further extensive research to assess the efficacy of these products, potentially integrating them into treatment regimens for individuals with metabolic syndrome.
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Emamat H, Najafpour Boushehri S, Eslami MA, Saneei Totmaj A, Ghalandari H. The effects of flaxseed or its oil supplementations on polycystic ovary syndrome: A systematic review of clinical trials. Phytother Res 2023; 37:1082-1091. [PMID: 36433633 DOI: 10.1002/ptr.7698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 08/26/2022] [Accepted: 10/08/2022] [Indexed: 11/28/2022]
Abstract
Polycystic ovary syndrome (PCOS) is one of the most common endocrine disorders around the world that can endanger reproductive, metabolic, and psychological health in women. Flaxseed is considered as a functional food which provides remarkable amounts of α-linolenic acid (ALA), phytosterogenic lignans, and dietary fibers. This study aimed to investigate the effectiveness of flaxseed or its oil supplementation on PCOS patients. We systematically searched all published randomized clinical trials indexed in PubMed, Scopus, and Google Scholar databases from inception up to May 2022. Intended exposure and outcome were flaxseed or its oil and metabolic, anthropometric, and hormonal status of women with PCOS, respectively. Initial search via related keywords revealed 69 articles. After excluding duplicates, title and abstract of 55 remaining papers were screened. Fourteen papers were obtained for full text screening. Finally, nine clinical trials published between 2011 and 2021 were included in qualitative synthesis. Based on the results of the present systematic review, we suggest that flaxseed supplementation has the potential to improve metabolic, hormonal, and anthropometric parameters in women with PCOS. However, we also deduce that due to the scarcity of high-quality studies, additional studies need to be conducted in order to derive a solid conclusion.
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Affiliation(s)
- Hadi Emamat
- The Persian Gulf Tropical Medicine Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Saeid Najafpour Boushehri
- Department of Nutrition, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Mohammad Ali Eslami
- General Practitioner, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ali Saneei Totmaj
- Nutrition Department, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Hamid Ghalandari
- Department of Clinical Nutrition, Faculty of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
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Mahmudiono T, Jasim SA, Karim YS, Bokov DO, Abdelbasset WK, Akhmedov KS, Yasin G, Thangavelu L, Mustafa YF, Shoukat S, Najm MAA, Amraei M. The effect of flaxseed oil consumtion on blood pressure among patients with metabolic syndrome and related disorders: A systematic review and meta-analysis of randomized clinical trials. Phytother Res 2022; 36:3766-3773. [PMID: 35859037 DOI: 10.1002/ptr.7566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 06/30/2022] [Accepted: 07/05/2022] [Indexed: 11/08/2022]
Abstract
We systematically reviewed randomized clinical trials (RCTs) to elucidate the overall effects of flaxseed oil consumption on blood pressure (BP) in patients with metabolic syndrome and related disorders. PubMed, Scopus, Cochrane Library, and ISI Web of Science databases were systematically searched until March 31, 2020, to find RCTs that examined the effect of flaxseed oil consumption on BP. Weighed mean difference (WMD) was pooled using a random-effects model. Standard methods were used for the assessment of heterogeneity, sensitivity analysis, and publication bias. Meta-analysis of five trials (6 arms) showed significant reductions in systolic (WMD: -3.86 mmHg, 95% CI: -7.59 to -0.13, p = .04) BP (SBP) after flaxseed oil consumption. However, the overall effect illustrated no significant change in diastolic (WMD: -1.71 mmHg, 95% CI: -3.67 to 0.26, p = .09) BP (DBP) in the intervention group compared with the control group. Our findings revealed that flaxseed oil consumption has favorable effects on SBP in patients with metabolic syndrome and related disorders. However, further investigations are needed to provide more reliable evidence.
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Affiliation(s)
- Trias Mahmudiono
- Department of Nutrition, Faculty of Public Health, Universitas Airlangga, Surabaya, Indonesia
| | - Saade Abdalkareem Jasim
- Al-maarif University College, Medical Laboratory Techniques Department, Al-anbar-Ramadi, Iraq
| | - Yasir Salam Karim
- Department of Pharmacy, Al-Manara College for Medical Sciences, Maysan, Iraq.,Department of Pharmacy, Al-Nisour University College, Baghdad, Iraq
| | - Dmitry Olegovich Bokov
- Institute of Pharmacy, Sechenov First Moscow State Medical University, Moscow, Russian Federation.,Laboratory of Food Chemistry, Federal Research Center of Nutrition, Biotechnology and Food Safety, Moscow, Russian Federation
| | - Walid Kamal Abdelbasset
- Department of Health and Rehabilitation Sciences, College of Applied Medical Sciences, Prince Sattam bin Abdulaziz University, Al Kharj, Saudi Arabia.,Department of Physical Therapy, Kasr Al-Aini Hospital, Cairo University, Giza, Egypt
| | - Kholmurod S Akhmedov
- Professor, Doctor of Medical Sciences, Head of the Department of Internal Diseases No.3, Tashkent Medical Academy, Tashkent, Uzbekistan
| | - Ghulam Yasin
- Department of Botany, Bahauddin Zakariya University, Multan, Pakistan
| | - Lakshmi Thangavelu
- Center for Transdisciplinary Research, Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Science, Saveetha University, Chennai, India
| | - Yasser Fakri Mustafa
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Mosul, Mosul, Iraq
| | - Shehla Shoukat
- Plant Genomics and Biotechnology, National Institute for Genomics and Advanced Biotechnology, National Agricultural research centre, Islamabad, Pakistan
| | - Mazin A A Najm
- Pharmaceutical Chemistry Department, College of Pharmacy, Al-Ayen University, Thi-Qar, Iraq
| | - Mohammad Amraei
- Kuhdasht Health Center, Lorestan University of Medical Sciences, Khorramabad, Iran
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Takic M, Pokimica B, Petrovic-Oggiano G, Popovic T. Effects of Dietary α-Linolenic Acid Treatment and the Efficiency of Its Conversion to Eicosapentaenoic and Docosahexaenoic Acids in Obesity and Related Diseases. Molecules 2022; 27:molecules27144471. [PMID: 35889342 PMCID: PMC9317994 DOI: 10.3390/molecules27144471] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/06/2022] [Accepted: 07/09/2022] [Indexed: 02/06/2023] Open
Abstract
The essential fatty acid alpha-linolenic acid (ALA) is present in high amounts in oils such as flaxseed, soy, hemp, rapeseed, chia, and perilla, while stearidonic acid is abundant in echium oil. ALA is metabolized to eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) by desaturases and elongases in humans. The conversion of ALA to EPA and DHA is limited, and these long-chain n−3 polyunsaturated fatty acids (PUFAs) are mainly provided from dietary sources (fish and seafood). This review provides an overview of studies that explored the effects of dietary supplementation with ALA in obesity and related diseases. The obesity-associated changes of desaturase and elongase activities are summarized, as they could influence the metabolic conversion of ALA. Generally, supplementation with ALA or ALA-rich oils leads to an increase in EPA levels and has no effect on DHA or omega-3 index. According to the literature data, stearidonic acid could enhance conversion of ALA to long-chain n−3 PUFA in obesity. Recent studies confirm that EPA and DHA intake should be considered as a primary dietary treatment strategy for improving the omega-3 index in obesity and related diseases.
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Shareghfarid E, Nadjarzadeh A, Heidarzadeh-Esfahani N, Azamian Y, Hajiahmadi S. The Effect of Flaxseed Oil Supplementation on Body Composition and Inflammation Indices in Overweight Adults With Pre-Diabetes. Nutr Metab Insights 2022; 15:11786388221090083. [PMID: 35799617 PMCID: PMC9253991 DOI: 10.1177/11786388221090083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 03/01/2022] [Indexed: 11/26/2022] Open
Abstract
Background: Flaxseed has rich content of alpha linolenic acid for preventing pro
inflammatory process. The aim of present study is exploring the effect of
flaxseed oil supplementation on inflammatory biomarkers and body composition
in overweight adults with pre-diabetes. Material and methods: this double-blind randomized clinical trial conducted with 80 overweight
pre-diabetic patients in 2 clusters (flaxseed oil group (2000-mg daily) and
control group) across a 14-week period. Anthropometric indices, body
composition and inflammatory indices were measured between 2 groups before
and after the treatment. Result: this study found a significant decrease in visceral fat level in the
intervention group (P = .009) and control group
(P = .004) at the end of the survey. However, the mean
change of it (P = .06) was not significant. Also, this
study showed that percentage of body fat (P = .31) and its
mean change (P = .6) did not have significantly different
between the 2 groups at the 14th week. The skeletal muscle% had a
significant rise in the intervention group (P = .005) and
control group (P = .003) by the end of 14th week. However,
the mean change of it (P = .19) was not significant between
the 2 groups. In addition, there was no significant change in the fasting
blood glucose (P = . 7), C reactive protein
(P = .12) and TNF-α (P = .22) between
the 2 groups at the end of study. Conclusion: It showed that flaxseed oil supplementation cannot improve body composition
and inflammation.
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Affiliation(s)
- Elham Shareghfarid
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Azadeh Nadjarzadeh
- Nutrition and Food Security Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Islamic Republic of Iran.,Department of Nutrition, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Islamic Republic of Iran
| | - Neda Heidarzadeh-Esfahani
- Department of Nutritional Science, School of Nutritional Science and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Islamic Republic of Iran
| | - Yasaman Azamian
- Department of Nutritional Science, School of Nutritional Science and Food Technology, Kermanshah University of Medical Sciences, Kermanshah, Islamic Republic of Iran
| | - Salimeh Hajiahmadi
- Nutrition and Food Security Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Islamic Republic of Iran.,Department of Nutrition, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Islamic Republic of Iran
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Tse TJ, Guo Y, Shim YY, Purdy SK, Kim JH, Cho JY, Alcorn J, Reaney MJT. Availability of bioactive flax lignan from foods and supplements. Crit Rev Food Sci Nutr 2022; 63:9843-9858. [PMID: 35532015 DOI: 10.1080/10408398.2022.2072807] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Hyperlipidemia, high levels of blood lipids including cholesterol and triglycerides, is a major risk factor for cardiovascular disease. Traditional treatments of hyperlipidemia often include lifestyle changes and pharmacotherapy. Recently, flaxseed has been approved as a nutrient that lowers blood lipids. Several metabolites of flaxseed lignan secoisolariciresinol diglucoside (SDG), have been identified that reduce blood lipids. SDG is present in flaxseed hull as an ester-linked copolymer with 3-hydroxy-3-methylglutaric acid (HMGA). However, purification processes involved in hydrolysis of the copolymer and enriching SDG are often expensive. The natural copolymer of SDG with HMGA (SDG polymer) is a source of bioactive compounds useful in prophylaxis of hypercholesterolemia. After consumption of the lignan copolymer, SDG and HMGA are released in the stomach and small intestines. SDG is metabolized to secoisolariciresinol, enterolactone and enterodiol, the bioactive forms of mammalian lignans. These metabolites are then distributed throughout the body where they accumulate in the liver, kidney, skin, other tissues, and organs. Successively, these metabolites reduce blood lipids including cholesterol, triglycerides, low density lipoprotein cholesterol, and lipid peroxidation products. In this review, the metabolism and efficacies of flaxseed-derived enriched SDG and SDG polymer will be discussed.
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Affiliation(s)
- Timothy J Tse
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Yajia Guo
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Youn Young Shim
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
- Prairie Tide Diversified Inc., Saskatoon, Saskatchewan, Canada
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, Korea
| | - Sarah K Purdy
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Ji Hye Kim
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, Korea
| | - Jae Youl Cho
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, Korea
| | - Jane Alcorn
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Martin J T Reaney
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
- Prairie Tide Diversified Inc., Saskatoon, Saskatchewan, Canada
- Guangdong Saskatchewan Oilseed Joint Laboratory, Department of Food Science and Engineering, Jinan University, Guangdong, China
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Groussard C, Plissonneau C, Josset L, Capel F, Mura M, Gouraud E, Mairesse G, Chesneau G, Barnich N, Pialoux V, Boisseau N. Beneficial Effects of High Intensity Interval Training and/or Linseed Oil Supplementation to Limit Obesity-Induced Oxidative Stress in High Fat Diet-Fed Rats. Nutrients 2021; 13:3531. [PMID: 34684532 PMCID: PMC8537033 DOI: 10.3390/nu13103531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 09/27/2021] [Accepted: 09/29/2021] [Indexed: 12/18/2022] Open
Abstract
High-intensity interval training (HIIT) and linseed oil (LO) supplementation are effective strategies to reduce obesity-induced oxidative stress. Our aim was to determine whether the HIIT + LO combination prevents obesity-induced oxidative stress in high fat diet (HFD)-fed rats. HFD-fed 8-week-old, male, Wistar rats were subdivided in four groups: HFD, LO (2% of sunflower oil replaced with 2% of LO in the HFD), HIIT (4 days/week for 12 weeks), and HIIT + LO. Wistar rats fed a low-fat diet (LFD) were used as controls. Epididymal and subcutaneous adipose tissue, gastrocnemius muscle, liver, and plasma samples were collected to measure oxidative stress markers (AOPP, oxLDL), antioxidant (SOD, CAT, and GPx activities) and pro-oxidant (NOx and XO) enzyme activities. Compared with the LFD, the HFD altered the pro/antioxidant status in different tissues (increase of AOPP, oxLDL, SOD and catalase activities in plasma, and SOD activity increase in liver and decrease in adipose tissues) but not in gastrocnemius. LO upregulated CAT activity and decreased NOx in liver. HIIT alleviated HFD negative effects in liver by reducing SOD and NOx activities. Moreover, the HIIT + LO combination potentiated SOD activity upregulation in subcutaneous tissue. HIIT and LO supplementation have independent beneficial effects on the pro/antioxidant balance. Their association promotes SOD activity in subcutaneous adipose tissue.
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Affiliation(s)
| | - Claire Plissonneau
- Laboratoire des Adaptations Métaboliques à l’Exercice en Conditions Physiologiques et Pathologiques (AME2P), CRNH Auvergne, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France; (C.P.); (N.B.)
- CRNH Auvergne, Microbes, Intestin, Inflammation et Susceptibilité de l’Hôte (M2iSH), USC-INRAE 2018, UMR 1071 Inserm/Université d’Auvergne, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France;
| | - Laurie Josset
- Team “Atherosclerosis, Thrombosis and Physical Activity”, Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM)-EA 7424, Université Lyon 1, F-69100 Lyon, France; (L.J.); (M.M.); (E.G.); (V.P.)
| | - Fréderic Capel
- Unité de Nutrition Humaine (UNH), CRNH Auvergne, Université Clermont Auvergne, INRAE, F-63000 Clermont-Ferrand, France;
| | - Mathilde Mura
- Team “Atherosclerosis, Thrombosis and Physical Activity”, Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM)-EA 7424, Université Lyon 1, F-69100 Lyon, France; (L.J.); (M.M.); (E.G.); (V.P.)
| | - Etienne Gouraud
- Team “Atherosclerosis, Thrombosis and Physical Activity”, Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM)-EA 7424, Université Lyon 1, F-69100 Lyon, France; (L.J.); (M.M.); (E.G.); (V.P.)
| | | | | | - Nicolas Barnich
- CRNH Auvergne, Microbes, Intestin, Inflammation et Susceptibilité de l’Hôte (M2iSH), USC-INRAE 2018, UMR 1071 Inserm/Université d’Auvergne, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France;
| | - Vincent Pialoux
- Team “Atherosclerosis, Thrombosis and Physical Activity”, Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM)-EA 7424, Université Lyon 1, F-69100 Lyon, France; (L.J.); (M.M.); (E.G.); (V.P.)
- Institut Universitaire de France, F-75231 Paris, France
| | - Nathalie Boisseau
- Laboratoire des Adaptations Métaboliques à l’Exercice en Conditions Physiologiques et Pathologiques (AME2P), CRNH Auvergne, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France; (C.P.); (N.B.)
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10
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Flaxseed Oil Supplementation Augments Antioxidant Capacity and Alleviates Oxidative Stress: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:4438613. [PMID: 34527059 PMCID: PMC8437595 DOI: 10.1155/2021/4438613] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 08/23/2021] [Indexed: 01/05/2023]
Abstract
Objective Studies have reported controversial findings regarding the flaxseed oil effect on antioxidant status biomarkers. The present meta-analysis aimed to determine the impact of flaxseed oil on the serum level of biomarkers of oxidative stress. Methods A systematic search was conducted up to November 2020 on PubMed, Embase, Web of Science, Scopus, and Cochrane Central Library. Random-effects model was employed to perform meta-analysis. Subgroup analysis was carried out to determine the effect across different ranges of dosages and durations. Results Eight trials were included with a total sample size of 429 individuals with a mean age range of 25 to 70 years. The results indicated that flaxseed oil supplementation led to a significant decrease in malondialdehyde (MDA) levels (SMD: −0.52 μmol/L; 95% CI: −0.89, −0.15; P=0.006, I2 = 71.3, P < 0.001) and increase in total antioxidant capacity (TAC) levels (WMD: 82.84 mmol/L; 95% CI: 19.80, 145.87; P=0.006, I2 = 92.7, P < 0.001). No significant effect was observed on glutathione (GSH). Conclusion Our findings revealed that flaxseed oil supplementation might play a beneficial role in the reinforcement of the antioxidant defense system and amelioration of oxidative stress in adults.
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Kavyani M, Saleh-Ghadimi S, Dehghan P, Abbasalizad Farhangi M, Khoshbaten M. Co-supplementation of camelina oil and a prebiotic is more effective for in improving cardiometabolic risk factors and mental health in patients with NAFLD: a randomized clinical trial. Food Funct 2021; 12:8594-8604. [PMID: 34338703 DOI: 10.1039/d1fo00448d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This trial evaluated the effects of co-supplementing Camelina sativa oil (CSO) and a prebiotic as modulators of the gut microbiota on cardiometabolic risk factors and mental health in NAFLD patients. In all, 44 subjects with NAFLD were allocated to either an intervention (20 g d-1 CSO + resistant dextrin) or a placebo (20 g d-1 CSO + maltodextrin) group and received a calorie-restricted diet (-500 kcal d-1) for 12 weeks. Fasting plasma levels of gucose, insulin, hs-CRP, endotoxin, antioxidant enzyme activity, total antioxidant capacity (TAC), malondialdehyde (MDA), 8-iso-prostaglandin F2α, and uric acid were measured at the baseline and post-intervention. The depression, anxiety and stress scale (DASS) and the general health questionnaire (GHQ) were used to assess mental health. Co-supplementing CSO and resistant dextrin significantly decreased the level of insulin concentration (-0.84 μU ml-1, p = 0.011), HOMA-IR (-0.27, p = 0.021), hs-CRP (-1.25 pg ml-1, p = 0.023), endotoxin (-3.70 EU mL-1, p = 0.001), cortisol (-2.43, p = 0.033), GHQ (-5.03, p = 0.035), DASS (-9.01, p = 0.024), and MDA (-0.54 nmol mL-1, p = 0.021) and increased the levels of TAC (0.16 mmol L-1, p = 0.032) and superoxide dismutase (106.32 U g-1 Hb, p = 0.45) in the intervention group compared with the placebo group. No significant changes were observed in the levels of other biomarkers. Co-supplementing CSO and resistant dextrin in combination with a low-calorie diet may improve metabolic risk factors and mental health in NAFLD patients.
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Affiliation(s)
- Maryam Kavyani
- Student research committee, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sevda Saleh-Ghadimi
- Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Parvin Dehghan
- Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Mahdieh Abbasalizad Farhangi
- Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran. and Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Manouchehr Khoshbaten
- Liver and Gastrointestinal Disease Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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