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Efficacy of Submicron Dispersible Free Phytosterols on Non-Alcoholic Fatty Liver Disease: A Pilot Study. J Clin Med 2023; 12:jcm12030979. [PMID: 36769628 PMCID: PMC9918217 DOI: 10.3390/jcm12030979] [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: 12/05/2022] [Revised: 01/23/2023] [Accepted: 01/24/2023] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND No pharmacological treatment is yet approved for non-alcoholic fatty liver disease (NAFLD). Plant sterols have shown healthy properties beyond lowering LDL-cholesterol, including lowering triglycerides and lipoprotein plasma levels. Despite pre-clinical data suggesting their involvement in liver fat control, no clinical study has yet been successful. AIMS Testing a sub-micron, free, phytosterol dispersion efficacy on NAFLD. METHODS A prospective, uncontrolled pilot study was carried out on 26 patients with ≥17.4% liver steatosis quantified by magnetic resonance imaging. Subjects consumed daily a sub-micron dispersion providing 2 g of phytosterols. Liver fat, plasma lipids, lipoproteins, liver enzymes, glycemia, insulinemia, phytosterols, liposoluble vitamins and C-reactive protein were assessed at baseline and after one year of treatment. RESULTS Liver steatosis relative change was -19%, and 27% of patients reduced liver fat by more than 30%. Statistically and clinically significant improvements in plasma triglycerides, HDL-C, VLDL and HDL particle number and C-reactive protein were obtained, despite the rise of aspartate aminotransferase, glycemia and insulinemia. Though phytosterol plasma levels were raised by >30%, no adverse effects were presented, and even vitamin D increased by 23%. CONCLUSIONS Our results are the first evidence in humans of the efficacy of submicron dispersible phytosterols for the treatment of liver steatosis, dyslipidemia and inflammatory status in NAFLD.
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Saeedi F, Farkhondeh T, Roshanravan B, Amirabadizadeh A, Ashrafizadeh M, Samarghandian S. Curcumin and blood lipid levels: an updated systematic review and meta-analysis of randomised clinical trials. Arch Physiol Biochem 2022; 128:1493-1502. [PMID: 36264280 DOI: 10.1080/13813455.2020.1779309] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The present study was designed to indicate the protective effects of curcumin on dyslipidemia. Main databases were searched to recognise randomised clinical trials evaluating the effect of curcumin on blood lipid profiles. The pooled odds ratio with a 95% confidence interval (CI) was used to evaluate the effect of curcumin on blood lipid parameters. HDL-C levels in the curcumin group were 0.04-fold lower than placebo (95% CI:-0.36-0.29; Z = 0.23; p = .82). LDL-C levels in the curcumin group reduced by 0.17 versus the placebo group (95% CI: -0.43-0.09; Z = 1.27; p = .2). TC levels in the curcumin group were 0.21 lower versus the placebo group (95% CI: -0.55-0.13; Z = 1.22; p = .22). TG level in the curcumin group were 0.05 lower versus the placebo (95% CI: -0.20-0.11; Z = 0.58; p = .56). This study suggests that curcumin may reduce blood lipid levels and can be used as a hypolipidemic agent.
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Affiliation(s)
- Farhad Saeedi
- Student Research Committee, Birjand University of Medical Sciences, Birjand, Iran
| | - Tahereh Farkhondeh
- Cardiovascular Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Babak Roshanravan
- Medical Toxicology and Drug Abuse Research Center (MTDRC), Birjand University of Medical Sciences, Birjand, Iran
| | - Alireza Amirabadizadeh
- Cardiovascular Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Milad Ashrafizadeh
- Department of Basic Science, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Saeed Samarghandian
- Healthy Ageing Research Center, Neyshabur University of Medical Sciences, Neyshabur, Iran
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Prakash O, Karthika Selvi M, Vijayaraj P, Kudachikar VB. Lipidome, nutraceuticals and nutritional profiling of Pyrus pashia Buch.-ham ex D. Don (Kainth) seeds oil and its antioxidant potential. Food Chem 2020; 338:128067. [PMID: 32950871 DOI: 10.1016/j.foodchem.2020.128067] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 09/06/2020] [Accepted: 09/08/2020] [Indexed: 11/19/2022]
Abstract
Kainth fruit, as traditional medicine, has been used in the Himalayan region for its health-promoting properties. However, the phytochemicals and lipidomes of Kainth Seed Oil (KSO) are still scarce. Here, we investigated the physicochemical characterization of KSO and its nutraceuticals, antioxidant potentials. Kainth seeds contain 19-20% oil rich in polyunsaturated fatty acids (PUFA, 82.22%), particularly linoleic acid (C18:2). Lipidome analysis of KSO using high-resolution mass spectrometry showed that trilinoleate (C54:6) was the dominant triacylglycerol (TAG) species. Further, the characteristics of PUFA-rich oil were validated by Fourier transforms infrared spectroscopy (FTIR) and Differential Scanning calorimetry (DSC). The nutraceuticals profiling of KSO depicted the presence of tocopherols (86.72 mg) and phytosterols (32.25 mg) in 100 g oil with significant antioxidant activity. The oil cake contained 19.09% protein and minerals and can be a source for dietary protein. Collectively these results suggest that KSO will be a suitable source for PUFA and nutraceuticals potential.
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Affiliation(s)
- Om Prakash
- Department of Fruit and Vegetable Technology, CSIR-Central Food Technological Research Institute, Mysuru, Karnataka 570020, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Moorthy Karthika Selvi
- Lipid and Nutrition Laboratory, Department of Lipid Science, CSIR-Central Food Technological Research Institute, Mysuru, Karnataka 570020, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Panneerselvam Vijayaraj
- Lipid and Nutrition Laboratory, Department of Lipid Science, CSIR-Central Food Technological Research Institute, Mysuru, Karnataka 570020, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Vithal Balavant Kudachikar
- Department of Fruit and Vegetable Technology, CSIR-Central Food Technological Research Institute, Mysuru, Karnataka 570020, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India.
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Palmeiro-Silva YK, Aravena RI, Ossio L, Parro Fluxa J. Effects of Daily Consumption of an Aqueous Dispersion of Free-Phytosterols Nanoparticles on Individuals with Metabolic Syndrome: A Randomised, Double-Blind, Placebo-Controlled Clinical Trial. Nutrients 2020; 12:nu12082392. [PMID: 32785036 PMCID: PMC7468816 DOI: 10.3390/nu12082392] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/04/2020] [Accepted: 08/05/2020] [Indexed: 11/16/2022] Open
Abstract
Metabolic syndrome (MS) affects up to 40% of the population and is associated with heart failure, stroke and diabetes. Phytosterols (PS) could help to manage one or more MS criteria. The purpose of this study was to evaluate the therapeutic effect of daily supplementation of an aqueous dispersion of 2 g of free-phytosterols nanoparticles in individuals with MS over six months of intervention, compared with placebo. This double-blind study included 202 participants with MS randomly assigned into phytosterol (n = 102) and placebo (n = 100) groups. Participants were assessed at baseline, 4, 12 and 24 weeks. General health questions, anthropometric measurements and blood parameters were analysed. At week 24, the proportion of participants with high triglycerides (≥150 mg/dL) in the phytosterol group was 15.65% lower than in the placebo group (p-value = 0.023). Similarly, half of the participants in the phytosterol group decreased their waist circumference up to 4 cm compared with 0 cm in the placebo group (p-value = 0.0001). We reported no adverse effects (diarrhoea or vitamin D reduction); nonetheless, almost 70% of participants in the phytosterol group self-reported an improvement in bowel habits. Daily intake of free-PS nanoparticles improved some MS criteria; therefore, it might be a promising adjuvant therapy for individuals with MS (NCT02969720).
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Affiliation(s)
- Yasna K. Palmeiro-Silva
- School of Nursing, Universidad de los Andes, Las Condes 7550000, Chile; (L.O.); (J.P.F.)
- Correspondence: ; Tel./Fax: +56-2-226181332
| | - Raúl I. Aravena
- Department of Chemical Engineering, Imperial College London, London SW7 2BX, UK;
| | - Lisette Ossio
- School of Nursing, Universidad de los Andes, Las Condes 7550000, Chile; (L.O.); (J.P.F.)
| | - Javiera Parro Fluxa
- School of Nursing, Universidad de los Andes, Las Condes 7550000, Chile; (L.O.); (J.P.F.)
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Ferguson JJA, Stojanovski E, MacDonald-Wicks L, Garg ML. High molecular weight oat β-glucan enhances lipid-lowering effects of phytosterols. A randomised controlled trial. Clin Nutr 2020; 39:80-89. [DOI: 10.1016/j.clnu.2019.02.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 12/12/2018] [Accepted: 02/04/2019] [Indexed: 01/03/2023]
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Combining Plant Sterols With Walking Lowers Postprandial Triacylglycerol More Than Walking Only in Chinese Men With Elevated Body Mass Index. Int J Sport Nutr Exerc Metab 2019; 29:576-582. [PMID: 31034251 DOI: 10.1123/ijsnem.2018-0398] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 03/06/2019] [Accepted: 03/06/2019] [Indexed: 01/12/2023]
Abstract
This study examined if plant sterols and walking reduce postprandial triacylglycerol (TAG) concentrations in Chinese men with elevated body mass index (≥ 23.5 kg/m2). Fifteen Chinese men (mean [SD]: age = 25 [3] years and body mass index = 26.2 [1.5] kg/m2] completed four 10-day trials in random order with a 7- to 10-day washout between trials: (a) daily consumption of a control margarine while sedentary (C-S), (b) daily consumption of margarine containing 2 g/day of plant sterols while sedentary (PS-S), (c) daily consumption of a control margarine with 30-min daily walking (C-W), and (d) daily consumption of margarine containing 2 g/day of plant sterols with 30-min daily walking (PS-W). On Day 11 of each trial, postprandial TAG was measured after a high-fat milkshake. The 5-hr total area under the TAG curve was 22%, 25%, and 12% lower on PS-W (mean [SD]: 8.9 [4.3] mmol·5 hr/L) than C-S (11.4 [4.5] mmol·5 hr/L; p = .005; d = 0.56), PS-S (11.9 [4.9] mmol·5 hr/L; p = .004; d = 0.67), and C-W (10.1 [4.4] mmol·5 hr/L; p = .044; d = 0.27) trials, respectively. Similarly, 5-hr incremental area for PS-W (4.5 [2.7] mmol·5 hr/L) was 31%, 32%, and 18% lower than C-S (6.6 [3.3] mmol·5 hr/L; p = .005; d = 0.62), PS-S (6.6 [3.4] mmol·5 hr/L; p = .004; d = 0.64), and C-W (5.5 [2.8] mmol·5 hr/L; p = .032; d = 0.29). Ten days of daily plant sterol intake combined with walking presents an intervention strategy to lower postprandial TAG in Chinese men with elevated body mass index.
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Jones PJH, Shamloo M, MacKay DS, Rideout TC, Myrie SB, Plat J, Roullet JB, Baer DJ, Calkins KL, Davis HR, Barton Duell P, Ginsberg H, Gylling H, Jenkins D, Lütjohann D, Moghadasian M, Moreau RA, Mymin D, Ostlund RE, Ras RT, Ochoa Reparaz J, Trautwein EA, Turley S, Vanmierlo T, Weingärtner O. Progress and perspectives in plant sterol and plant stanol research. Nutr Rev 2019; 76:725-746. [PMID: 30101294 DOI: 10.1093/nutrit/nuy032] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Current evidence indicates that foods with added plant sterols or stanols can lower serum levels of low-density lipoprotein cholesterol. This review summarizes the recent findings and deliberations of 31 experts in the field who participated in a scientific meeting in Winnipeg, Canada, on the health effects of plant sterols and stanols. Participants discussed issues including, but not limited to, the health benefits of plant sterols and stanols beyond cholesterol lowering, the role of plant sterols and stanols as adjuncts to diet and drugs, and the challenges involved in measuring plant sterols and stanols in biological samples. Variations in interindividual responses to plant sterols and stanols, as well as the personalization of lipid-lowering therapies, were addressed. Finally, the clinical aspects and treatment of sitosterolemia were reviewed. Although plant sterols and stanols continue to offer an efficacious and convenient dietary approach to cholesterol management, long-term clinical trials investigating the endpoints of cardiovascular disease are still lacking.
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Affiliation(s)
- Peter J H Jones
- Richardson Centre for Functional Foods and Nutraceuticals, University of Manitoba, Winnipeg, Manitoba, Canada.,Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Maryam Shamloo
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, Canada.,George and Fay Yee Centre for Healthcare Innovation, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Dylan S MacKay
- George and Fay Yee Centre for Healthcare Innovation, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Todd C Rideout
- Department of Exercise and Nutrition Sciences, University of Buffalo, Buffalo, New York, USA
| | - Semone B Myrie
- Richardson Centre for Functional Foods and Nutraceuticals, University of Manitoba, Winnipeg, Manitoba, Canada.,Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Jogchum Plat
- Department of Human Biology, Maastricht University, Maastricht, the Netherlands
| | - Jean-Baptiste Roullet
- Division of Metabolism, Child Development and Rehabilitation Center-Portland, Department of Pediatrics, Oregon Health & Science University, Portland, Oregon, USA
| | - David J Baer
- US Department of Agriculture, Agricultural Research Service, Beltsville Human Nutrition Research Center, Beltsville, Maryland, USA
| | - Kara L Calkins
- Department of Pediatrics, Division of Neonatology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA; and the UCLA Mattel's Children's Hospital, Los Angeles, California, USA
| | | | - P Barton Duell
- Knight Cardiovascular Institute, Oregon Health & Science University, Portland, Oregon, USA
| | - Henry Ginsberg
- Institute of Human Nutrition, Columbia University Irving Medical Center, New York, New York, USA
| | - Helena Gylling
- University of Helsinki and the Helsinki University Central Hospital, Helsinki, Finland
| | - David Jenkins
- Department of Nutritional Sciences, University of Toronto, Toronto, Ontario, Canada; and the Clinical Nutrition and Risk Factor Modification Centre, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Dieter Lütjohann
- Institute for Clinical Chemistry and Clinical Pharmacology, University of Bonn, Bonn, Germany
| | - Mohammad Moghadasian
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Robert A Moreau
- Eastern Regional Research Center, US Department of Agriculture, Agricultural Research Service, Wyndmoor, Pennsylvania, USA
| | - David Mymin
- Department of Internal Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Richard E Ostlund
- Division of Endocrinology, Metabolism and Lipid Research, Washington University, St Louis, USA
| | - Rouyanne T Ras
- Unilever Research & Development Vlaardingen, Vlaardingen, the Netherlands
| | | | - Elke A Trautwein
- Unilever Research & Development Vlaardingen, Vlaardingen, the Netherlands
| | | | - Tim Vanmierlo
- Department of Immunology and Biochemistry, Biomedical Research Institute, Hasselt University, Hasselt, Belgium
| | - Oliver Weingärtner
- Klinik für Innere Medizin I, Universitätsklinikum Jena, Friedrich-Schiller-Universität Jena, Jena, Germany; Abteilung für Kardiologie, Klinikum Oldenburg, European Medical School Oldenburg-Groningen, Oldenburg, Germany
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8
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Nascimento EBM, Konings M, Schaart G, Groen AK, Lütjohann D, van Marken Lichtenbelt WD, Schrauwen P, Plat J. In vitro effects of sitosterol and sitostanol on mitochondrial respiration in human brown adipocytes, myotubes and hepatocytes. Eur J Nutr 2019; 59:2039-2045. [PMID: 31317217 PMCID: PMC7351807 DOI: 10.1007/s00394-019-02052-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 07/08/2019] [Indexed: 12/03/2022]
Abstract
Purpose Lowering of LDL cholesterol levels by plant sterols and stanols is associated with decreased risk of cardiovascular disease in humans. Plant sterols and stanols also lower triacylglycerol (TG). However, it is not fully understood how reduction in TG is achieved and what the full potential of plant sterols and stanols is on whole-body metabolism. We here hypothesize that high levels of plant sterols and stanols stimulate whole-body energy expenditure, which can be attributed to changes in mitochondrial function of brown adipose tissue (BAT), skeletal muscle and liver. Methods Phytosterolemic mice were fed chow diets for 32 weeks to examine whole-body weight gain. In vitro, 24-h incubation were performed in adipocytes derived from human BAT, human myotubes or HepG2 human hepatocytes using sitosterol or sitostanol. Following mitochondrial function was assessed using seahorse bioanalyzer. Results Chow feeding in phytosterolemic mice resulted in diminished increase in body weight compared to control mice. In vitro, sitosterol or sitostanol did not change mitochondrial function in adipocytes derived from human BAT or in cultured human myotubes. Interestingly, maximal mitochondrial function in HepG2 human hepatocytes was decreased following sitosterol or sitostanol incubation, however, only when mitochondrial function was assessed in low glucose-containing medium. Conclusions Beneficial in vivo effects of plant sterols and stanols on lipid and lipoprotein metabolism are well recognized. Our results indicate that alterations in human mitochondrial function are apparently not involved to explain these beneficial effects.
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Affiliation(s)
- Emmani B M Nascimento
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, 6200 MD, The Netherlands
| | - Maurice Konings
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, 6200 MD, The Netherlands
| | - Gert Schaart
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, 6200 MD, The Netherlands
| | - Albert K Groen
- Department of Vascular Medicine, Amsterdam Diabetes Center, Amsterdam University Medical Center, Amsterdam, 1105 AZ, The Netherlands
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, 9713 ZG, The Netherlands
| | - Dieter Lütjohann
- Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital, 53127, Bonn, Germany
| | - Wouter D van Marken Lichtenbelt
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, 6200 MD, The Netherlands
| | - Patrick Schrauwen
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, 6200 MD, The Netherlands
| | - Jogchum Plat
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, 6200 MD, The Netherlands.
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Dumolt JH, Rideout TC. The Lipid-lowering Effects and Associated Mechanisms of Dietary Phytosterol Supplementation. Curr Pharm Des 2019; 23:5077-5085. [PMID: 28745211 DOI: 10.2174/1381612823666170725142337] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 07/01/2017] [Accepted: 07/21/2017] [Indexed: 12/12/2022]
Abstract
Phytosterols (PS) are plant-based structural analogous of mammalian cholesterol that have been shown to lower blood cholesterol concentrations by ~10%, although inter-individual response to PS supplementation due to subject-specific metabolic and genetic factors is evident. Recent work further suggests that PS may act as effective triglyceride (TG)-lowering agents with maximal TG reductions observed in hypertriglyceridemic subjects. Although PS have been demonstrated to interfere with cholesterol and perhaps TG absorption within the intestine, they also have the capacity to modulate the expression of lipid regulatory genes through liver X receptor (LXR) activation. Identification of single-nucleotide polymorphisms (SNP) in key cholesterol and TG regulating genes, in particular adenosine triphosphate binding cassette G8 (ABCG8) and apolipoprotein E (apoE) have provided insight into the potential of utilizing genomic identifiers as an indicator of PS responsiveness. While PS supplementation is deemed safe, expanding research into the atherogenic potential of oxidized phytosterols (oxyphytosterols) has emerged with their identification in arterial lesions. This review will highlight the lipid-lowering utility and associated mechanisms of PS and discuss novel applications and future research priorities for PS pertaining to in utero PS exposure for long-term cardiovascular disease risk protection and combination therapies with lipidlowering drugs.
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Affiliation(s)
- Jerad H Dumolt
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, 14214, United States
| | - Todd C Rideout
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, 14214, United States
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Plant sterols lower LDL-cholesterol and triglycerides in dyslipidemic individuals with or at risk of developing type 2 diabetes; a randomized, double-blind, placebo-controlled study. Nutr Diabetes 2018; 8:30. [PMID: 29795368 PMCID: PMC5968034 DOI: 10.1038/s41387-018-0039-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 03/15/2018] [Accepted: 04/05/2018] [Indexed: 01/14/2023] Open
Abstract
Background Managing cardiovascular disease (CVD) risk factors, e.g., dyslipidemia in type-2 diabetes mellitus (T2DM) is critically important as CVD is the most common cause of death in T2DM patients. This study aimed to investigate the effect of plant sterols (PS) on lowering both elevated low-density lipoprotein cholesterol (LDL-C) and triglycerides (TG). Methods In a double-blind, randomized, placebo-controlled, parallel study, 161 individuals at increased risk of and with established T2DM, consumed low-fat spreads without or with added PS (2 g/d) for 6 weeks after a 2-week run-in period. Increased risk of developing T2DM was defined by the Australian T2DM Risk Assessment Tool (AUSDRISK). Fasting serum/plasma total cholesterol (TC), LDL-C, TG, high-density lipoprotein cholesterol (HDL-C), glucose and insulin were measured at baseline and after 6 weeks. Effects on acute and chronic postprandial blood lipids, glucose and insulin were measured over 4-h in 39 individuals with T2DM following a mixed meal challenge without and with added 2 g/d PS at week 6. The study was registered at clinicaltrials.gov (NCT02288585). Results Hundred fifty-one individuals completed the study and 138 (57% men, 43% women; 44 with and 94 at risk of T2DM) were included in per protocol analysis. Baseline LDL-C and TG were 3.8 ± 1.0 and 2.5 ± 0.8 mmol/l, respectively. PS intake significantly lowered fasting LDL-C (−4.6%, 95%CI −1.2; −8.0; p = 0.009), TC (−4.2%, 95%CI −1.2; −7.1; p = 0.006) and TG (−8.3%, 95% −1.1, −15.0; p = 0.024) with no significant changes in HDL-C, glucose or insulin. Postprandial lipid (TG, TC, LDL-C, HDL-C, remnant cholesterol), glucose and insulin responses did not differ. Conclusions In individuals at risk of and with established T2DM and with elevated TG and LDL-C, 2 g/d of PS results in dual LDL-C plus TG lowering. Postprandial lipid or glycemic responses did not differ between PS and control treatment.
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Ferguson JJA, Stojanovski E, MacDonald-Wicks L, Garg ML. Curcumin potentiates cholesterol-lowering effects of phytosterols in hypercholesterolaemic individuals. A randomised controlled trial. Metabolism 2018; 82:22-35. [PMID: 29291429 DOI: 10.1016/j.metabol.2017.12.009] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 11/24/2017] [Accepted: 12/08/2017] [Indexed: 12/26/2022]
Abstract
BACKGROUND Dietary phytosterols (PS) are well-known hypocholesterolaemic agents. Curcumin elicits hypolipidaemic and anti-inflammatory effects in preclinical studies, however, consistent findings in humans are lacking. OBJECTIVE Concurrent PS and curcumin supplementation may exhibit enhanced hypocholesterolaemic and anti-inflammatory effects to optimise cardio-protection. The objective of this trial was to investigate the effects of dietary intervention with PS with or without curcumin on blood lipids (primary outcome) in hypercholesterolaemic individuals. METHODS A double-blinded, randomised, placebo-controlled, 2 × 2 factorial trial was conducted in hypercholesterolaemic individuals. Participants received either placebo (PL, no phytosterols or curcumin), phytosterols (PS, 2 g/d), curcumin (CC, 200 mg/d) or a combination of PS and curcumin (PS-CC, 2 g/d-200 mg/d respectively) for four weeks. Primary outcomes included fasting total cholesterol (TC), LDL-cholesterol, HDL-cholesterol, triglycerides (TG), TC-to-HDL-C ratio (TC:HDL-C). Secondary outcomes included anthropometrics and fasting blood glucose concentrations. RESULTS Seventy participants with a mean (±SEM) fasting TC concentration of 6.57 ± 0.13 mmol/L completed the study (PL, n = 18; PS, n = 17; CC, n = 18; PS-CC, n = 17). PS and PS-CC supplementation significantly lowered TC, LDL-cholesterol and TC:HDL-C post-intervention (p < 0.05). Reductions from baseline in the PS group were 4.8% and 8.1% for TC and LDL-cholesterol respectively (p < 0.05). CC exhibited non-significant reduction (2.3% and 2.6%) in TC and LDL-C respectively, however, the PS-CC resulted in a greater reduction in TC (11.0%) and LDL-cholesterol (14.4%) than either of the treatments alone (p < 0.0001). The reduction in the PS-CC treatment was significantly greater compared to those for CC (p < 0.05) or PL (p < 0.01) alone. Plasma HDL-cholesterol and TG concentrations remained unchanged across all groups. No adverse side effects were reported. CONCLUSIONS The addition of curcumin to phytosterol therapy provides a complementary cholesterol-lowering effect that is larger than phytosterol therapy alone. Implications of these findings include the development of a single functional food containing both the active ingredients for enhanced lipid-lowering and compliance in hypercholesterolaemic individuals. ANZCTR identifier: 1261500095650.
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Affiliation(s)
- Jessica J A Ferguson
- Nutraceuticals Research Program, School of Biomedical Sciences & Pharmacy, 305C Medical Science Building, University of Newcastle, Callaghan, NSW 2308, Australia.
| | - Elizabeth Stojanovski
- School of Mathematics and Physical Sciences, University of Newcastle, Callaghan, NSW 2308, Australia.
| | - Lesley MacDonald-Wicks
- School of Health Sciences, Faculty of Health & Medicine, University of Newcastle, Callaghan, NSW 2308, Australia.
| | - Manohar L Garg
- Nutraceuticals Research Program, School of Biomedical Sciences & Pharmacy, 305C Medical Science Building, University of Newcastle, Callaghan, NSW 2308, Australia.
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He WS, Pan RR, Li LL, Cui DD, Wang HH, Mao GH, Chen XQ. Combined Lowering Effect of Phytosterol Esters and Tea Extracts on Lipid Profiles in SD Rats. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2018. [DOI: 10.3136/fstr.24.875] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Wen-Sen He
- School of Food and Biological Engineering, Jiangsu University
| | - Rui-Rong Pan
- Clinical Nutrition Department, Affiliated Hospital of Jiangsu University
| | - Ling-Ling Li
- School of Food and Biological Engineering, Jiangsu University
| | - Dan-Dan Cui
- School of Food and Biological Engineering, Jiangsu University
| | - Hui-Hui Wang
- School of Food and Biological Engineering, Jiangsu University
| | - Guang-Hua Mao
- School of the environment and safety engineering, Jiangsu University
| | - Xiao-Qiang Chen
- College of Bioengineering and Food, Hubei University of Technology
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13
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Orem A, Alasalvar C, Vanizor Kural B, Yaman S, Orem C, Karadag A, Pelvan E, Zawistowski J. Cardio-protective effects of phytosterol-enriched functional black tea in mild hypercholesterolemia subjects. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.01.048] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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14
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Mackay DS, Eck PK, Rideout TC, Baer DJ, Jones PJH. Cholesterol ester transfer protein polymorphism rs5882 is associated with triglyceride-lowering in response to plant sterol consumption. Appl Physiol Nutr Metab 2016; 40:846-9. [PMID: 26244602 DOI: 10.1139/apnm-2015-0039] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Recent work suggests that plant sterol (PS) consumption may lower triglyceride (TG) concentrations; however, human clinical trial evidence is inconsistent. We associated SNP r5882 in cholesteryl ester transfer protein with changes in TG concentrations following PS consumption (2 g/day for 4 weeks) in a dual-centre, single-blind, randomized, crossover trial. TG concentrations were lowered in homozygotes for the minor G-allele of rs5882 (-0.46 ± 0.13 mmol/L, p = 0.002, n = 10); there was no effect in the A-allele carriers.
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Affiliation(s)
- Dylan S Mackay
- a Richardson Centre for Functional Foods and Nutraceuticals, University of Manitoba, Winnipeg, MB R3T 6C5, Canada.,b Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Peter K Eck
- b Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Todd C Rideout
- c Department of Exercise and Nutrition Sciences, University at Buffalo, Buffalo, NY 14214, USA
| | - David J Baer
- d United States Department of Agriculture (USDA), Agricultural Research Service, Beltsville Human Nutrition Research Center, Beltsville, MD 20705, USA
| | - Peter J H Jones
- a Richardson Centre for Functional Foods and Nutraceuticals, University of Manitoba, Winnipeg, MB R3T 6C5, Canada.,b Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.,e Department of Food Science, University of Manitoba, Winnipeg, MB R3T 6C5, Canada
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Liu J, Iqbal A, Raslawsky A, Browne RW, Patel MS, Rideout TC. Influence of maternal hypercholesterolemia and phytosterol intervention during gestation and lactation on dyslipidemia and hepatic lipid metabolism in offspring of Syrian golden hamsters. Mol Nutr Food Res 2016; 60:2151-2160. [PMID: 27213832 DOI: 10.1002/mnfr.201600116] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 04/15/2016] [Accepted: 05/11/2016] [Indexed: 01/29/2023]
Abstract
SCOPE Although there is a normal physiological rise in maternal lipids during pregnancy, excessive maternal hyperlipidemia during pregnancy increases cardiovascular disease risk for both the mother and offspring. There are limited safe lipid-lowering treatment options for use during pregnancy, therefore, we evaluated the influence of maternal phytosterol (PS) supplementation on lipid and lipoprotein metabolism in mothers and progeny. METHODS AND RESULTS Female Syrian golden hamsters were randomly assigned to three diets throughout prepregnancy, gestation, and lactation (n = 6/group): (i) Chow (Chow), (ii) chow with 0.5% cholesterol (CH), and (iii) chow with 0.5% CH and 2% PS (CH/PS). Compared with newly weaned pups from Chow dams, pups from dams fed the CH-enriched diet demonstrated increases (p < 0.05) in total-C, LDL-C, HDL-C, and total LDL and VLDL particle number. Pups from CH-fed mothers also exhibited higher hepatic CH concentration and differential mRNA expression pattern of CH regulatory genes. Pups from PS-supplemented dams demonstrated reductions (p < 0.05) in serum total-C, non-HDL-C, and LDL-C but also increased triglycerides compared with pups from CH-fed dams. Maternal PS supplementation reduced (p < 0.05) hepatic CH and increased the abundance of HMG-CoAr and LDLr protein in newly weaned pups compared with the CH group. CONCLUSION Results suggest that maternal PS supplementation is largely effective in normalizing CH in pups born to mothers with hypercholesterolemia, however, the cause and long-term influence of increased triglyceride is not known.
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Affiliation(s)
- Jie Liu
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, USA
| | - Aadil Iqbal
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, USA
| | - Amy Raslawsky
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, USA
| | - Richard W Browne
- Department of Biotechnical and Clinical Laboratory Sciences, University at Buffalo, Buffalo, NY, USA
| | - Mulchand S Patel
- Department of Biochemistry, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, USA
| | - Todd C Rideout
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, USA.
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16
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Phytosterols, Phytostanols, and Lipoprotein Metabolism. Nutrients 2015; 7:7965-77. [PMID: 26393644 PMCID: PMC4586569 DOI: 10.3390/nu7095374] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 09/08/2015] [Accepted: 09/11/2015] [Indexed: 12/04/2022] Open
Abstract
The efficacy of phytosterols and phytostanols added to foods and food supplements to obtain significant non-pharmacologic serum and low density lipoprotein (LDL) cholesterol reduction is well documented. Irrespective of age, gender, ethnic background, body weight, background diet, or the cause of hypercholesterolemia and, even added to statin treatment, phytosterols and phytostanols at 2 g/day significantly lower LDL cholesterol concentration by 8%–10%. They do not affect the concentrations of high density lipoprotein cholesterol, lipoprotein (a) or serum proprotein convertase subtilisin/kexin type 9. In some studies, phytosterols and phytostanols have modestly reduced serum triglyceride levels especially in subjects with slightly increased baseline concentrations. Phytosterols and phytostanols lower LDL cholesterol by displacing cholesterol from mixed micelles in the small intestine so that cholesterol absorption is partially inhibited. Cholesterol absorption and synthesis have been carefully evaluated during phytosterol and phytostanol supplementation. However, only a few lipoprotein kinetic studies have been performed, and they revealed that LDL apoprotein B-100 transport rate was reduced. LDL particle size was unchanged, but small dense LDL cholesterol concentration was reduced. In subjects with metabolic syndrome and moderate hypertriglyceridemia, phytostanols reduced not only non- high density lipoprotein (HDL) cholesterol concentration but also serum triglycerides by 27%, and reduced the large and medium size very low density lipoprotein particle concentrations. In the few postprandial studies, the postprandial lipoproteins were reduced, but detailed studies with apoprotein B-48 are lacking. In conclusion, more kinetic studies are required to obtain a more complete understanding of the fasting and postprandial lipoprotein metabolism caused by phytosterols and phytostanols. It seems obvious, however, that the most atherogenic lipoprotein particles will be diminished.
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17
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Ben Moumen A, Mansouri F, Richard G, Fauconnier ML, Sindic M, Nabloussi A, Elamrani A, Serghini Caid H. Variations in the phytosterol and tocopherol compositions and the oxidative stability in seed oils from four safflower (Carthamus tinctoriusL) varieties grown in north-eastern Morocco. Int J Food Sci Technol 2015. [DOI: 10.1111/ijfs.12879] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Abdessamad Ben Moumen
- Laboratory of Biology of Plants and Microorganisms; Faculté des Sciences Oujda; Université Mohammed Premier; BP-717 Oujda Morocco
| | - Farid Mansouri
- Laboratory of Biology of Plants and Microorganisms; Faculté des Sciences Oujda; Université Mohammed Premier; BP-717 Oujda Morocco
| | - Gaetan Richard
- General and Organic Chemistry Unit; Gembloux Agro-BioTech; Université de Liège; Passage des Deportes 2 B-5030 Gembloux Belgium
| | - Marie-Laure Fauconnier
- General and Organic Chemistry Unit; Gembloux Agro-BioTech; Université de Liège; Passage des Deportes 2 B-5030 Gembloux Belgium
| | - Marianne Sindic
- Analysis Quality and Risk Unit; Laboratory Food Quality and Safety; Gembloux Agro-BioTech; Université de Liège; Passage des Deportes 2 B-5030 Gembloux Belgium
| | - Abdelghani Nabloussi
- CRRA de Meknès; Institut National de la Recherche Agronomique (INRA); PO Box 578 50000 Meknès Morocco
| | - Ahmed Elamrani
- Laboratory of Biology of Plants and Microorganisms; Faculté des Sciences Oujda; Université Mohammed Premier; BP-717 Oujda Morocco
| | - Hana Serghini Caid
- Laboratory of Biology of Plants and Microorganisms; Faculté des Sciences Oujda; Université Mohammed Premier; BP-717 Oujda Morocco
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18
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Jacobs DM, Mihaleva VV, van Schalkwijk DB, de Graaf AA, Vervoort J, van Dorsten FA, Ras RT, Demonty I, Trautwein EA, van Duynhoven J. The effect of plant sterols and different low doses of omega-3 fatty acids from fish oil on lipoprotein subclasses. Mol Nutr Food Res 2015; 59:1745-57. [PMID: 26019023 DOI: 10.1002/mnfr.201500152] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 04/28/2015] [Accepted: 05/06/2015] [Indexed: 11/10/2022]
Abstract
SCOPE Consumption of a low-fat spread enriched with plant sterols (PS) and different low doses (<2 g/day) of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) from fish oil reduces serum triglycerides (TGs) and low-density lipoprotein-cholesterol (LDL-Chol) and thus beneficially affects two blood lipid risk factors. Yet, their combined effects on TG and Chol in various lipoprotein subclasses have been investigated to a limited extent. METHODS AND RESULTS In a randomized, double-blind, placebo-controlled, parallel study, we determined TG and Chol in 13 LP subclasses in fasting serum of 282 hypercholesterolemic subjects, who consumed either a placebo spread or one of the four spreads containing PS (2.5 g/day) and EPA+DHA (0.0, 0.9, 1.3, and 1.8 g/day) for 4 weeks. After PS treatment, total LDL-Chol was reduced, which was not further changed by EPA+DHA. No shift in the LDL-Chol particle distribution was observed. The addition of EPA+DHA to PS dose-dependently reduced VLDL-Chol and VLDL-TG mainly in larger particles. Furthermore, the two highest doses of EPA+DHA increased Chol and TG in the larger HDL particles, while these concentrations were decreased in the smallest HDL particles. CONCLUSION The consumption of a low-fat spread enriched with both PS and EPA+DHA induced shifts in the lipoprotein distribution that may provide additional cardiovascular benefits over PS consumption alone.
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Affiliation(s)
- Doris M Jacobs
- Unilever R&D, Vlaardingen, The Netherlands.,Netherlands Metabolomics Centre, Leiden, The Netherlands
| | - Velitchka V Mihaleva
- Netherlands Metabolomics Centre, Leiden, The Netherlands.,Laboratory of Biochemistry, Wageningen University, Wageningen, The Netherlands
| | | | | | - Jacques Vervoort
- Netherlands Metabolomics Centre, Leiden, The Netherlands.,Laboratory of Biochemistry, Wageningen University, Wageningen, The Netherlands
| | - Ferdinand A van Dorsten
- Unilever R&D, Vlaardingen, The Netherlands.,Netherlands Metabolomics Centre, Leiden, The Netherlands
| | | | | | | | - John van Duynhoven
- Unilever R&D, Vlaardingen, The Netherlands.,Netherlands Metabolomics Centre, Leiden, The Netherlands.,Laboratory of Biophysics, Wageningen University, Wageningen, The Netherlands
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19
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Rideout TC, Marinangeli CPF, Harding SV. Triglyceride-Lowering Response to Plant Sterol and Stanol Consumption. J AOAC Int 2015; 98:707-715. [PMID: 25941890 DOI: 10.5740/jaoacint.sgerideout] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Phytosterols (PS) have long been recognized for their cholesterol-lowering action, however, recent work has highlighted triglyceride (TG)-lowering responses to PS that may have been overlooked in previous human interventions and mechanistic animal model studies. This review assesses the current state of knowledge regarding the effect of dietary PS supplementation on blood TG concentrations by examining the average therapeutic response, potential mechanisms, and metabolic and genetic factors that may contribute to inter-individual variability. Data from human intervention trials demonstrates that, compared to baseline concentrations, PS supplementation results in a variable TG-lowering response ranging from 0.8 to 28%. It is evident that hypertriglyceridemic individuals (>1.7 mmol/L) have a greater TG-lowering response to PS (11-28%) than subjects with normal plasma TG concentrations (0.8-7%). Although a genetic basis for the variable TG-lowering effects of PS is probable, there are only limited studies to draw on. The available data suggest that polymorphisms in the apolipoprotein E (apoE) gene may affect responsiveness, with PS-induced reductions in TG more readily evident in apoE2 than apoE3 or E4 subjects. Although only a minimal number of animal model studies have been conducted to specifically examine the mechanisms whereby PS may reduce blood TG concentrations, it appears that there may be multiple mechanisms involved including interruption of intestinal fatty acid absorption and modulation of hepatic lipogenesis and very low density lipoprotein packaging and secretion. In summary, the available data suggest that PS may be an effective therapy to lower blood TG, particularly in hypertriglyceridemic individuals. However, before PS can be widely recommended as a TG-lowering therapy, studies that are specifically powered and designed to fully access therapeutic responses and the mechanisms involved are required.
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Affiliation(s)
- Todd C Rideout
- University at Buffalo, School of Public Health and Health Professions, Department of Exercise and Nutrition Sciences, Buffalo, NY 14214, USA
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20
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Acute intake of plant stanol esters induces changes in lipid and lipoprotein metabolism-related gene expression in the liver and intestines of mice. Lipids 2015; 50:529-41. [PMID: 25931382 PMCID: PMC4445258 DOI: 10.1007/s11745-015-4020-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Accepted: 04/04/2015] [Indexed: 11/01/2022]
Abstract
The kinetics of plant stanol uptake and routing in 8-week-old C57BL/6J mice were determined after a plant stanol ester gavage. In addition, acute changes in intestinal and hepatic gene expression were investigated. Mice were fed a plant sterol/stanol poor diet from weaning. At the age of 8 weeks, they received an oral gavage consisting of 0.25 mg cholesterol + 50 mg plant stanol esters dissolved in olive oil. Animals were euthanized at different time points. In a second comparable set-up, mesenteric lymph-cannulated versus sham-operated mice received the same oral gavage, which was now deuterium labeled. Intestinal and hepatic sitostanol concentrations increased within 15 min post-gavage. This rapid hepatic appearance was absent in lymph-cannulated mice, suggesting a very fast lymph-mediated uptake. Hepatic mRNA expression of SREBP2 and its target genes rapidly decreased, whereas expression of LXR target genes increased. The intestinal SREBP2 pathway was increased, whereas the expression of LXR target genes hardly changed. The fivefold and sixfold increased expression of intestinal LDLr and PCSK9 is suggestive of TICE activation. We conclude that in C57BL/6J mice plant stanol kinetics are fast, and affect intestinal and hepatic gene expression within 15 min postprandial after lymph-mediated uptake.
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21
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De Smet E, Mensink RP, Lütjohann D, Plat J. Acute effects of plant stanol esters on postprandial metabolism and its relation with changes in serum lipids after chronic intake. Eur J Clin Nutr 2014; 69:127-33. [DOI: 10.1038/ejcn.2014.200] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 07/28/2014] [Accepted: 08/14/2014] [Indexed: 01/25/2023]
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22
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Laos S, Caimari A, Crescenti A, Lakkis J, Puiggròs F, Arola L, del Bas JM. Long-term intake of soyabean phytosterols lowers serum TAG and NEFA concentrations, increases bile acid synthesis and protects against fatty liver development in dyslipidaemic hamsters. Br J Nutr 2014; 112:663-73. [PMID: 24932972 DOI: 10.1017/s0007114514001342] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Various human trials and pre-clinical studies have suggested that dietary plant sterols possess hypotriacylglycerolaemic properties apart from their cholesterol-lowering properties. We hypothesised that phytosterols (PS) might attenuate triacylglycerolaemia by interfering with the deleterious effects of cholesterol overload in the liver. In the present study, twenty hamsters (Mesocricetus auratus) with diet-induced combined hyperlipidaemia were fed a high-fat diet (HFD, n 10) or a HFD supplemented with soyabean PS (n 10) for 40 d. In parallel, a healthy group was fed a standard diet (n 10). PS normalised fasting plasma cholesterol concentrations completely after 20 d and were also able to normalise serum TAG and NEFA concentrations after 40 d. HFD feeding caused microvesicular steatosis and impaired the expression of key genes related to fatty acid oxidation such as PPARA, carnitine palmitoyltransferase-Iα (CPT1A) and phosphoenolpyruvate carboxykinase 1 (PCK1) in the liver. PS treatment completely protected against HFD-induced steatosis and resulted in a normalised hepatic gene expression profile. The protection of the hepatic function by PS was paralleled by increased faecal cholesterol excretion along with a 2-fold increase in the biliary bile acid (BA):cholesterol ratio. The present study supports the conclusion that long-term consumption of PS can reduce serum TAG and NEFA concentrations and can protect against the development of fatty liver via different mechanisms, including the enhancement of BA synthesis. The results of the present study place these compounds as promising hepatoprotective agents against fatty liver and its derived pathologies.
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Affiliation(s)
- Sirle Laos
- Centre Tecnològic de Nutrició i Salut (CTNS),TECNIO, CEICS, Avinguda Universitat 1,43204Reus, Tarragona,Spain
| | - Antoni Caimari
- Centre Tecnològic de Nutrició i Salut (CTNS),TECNIO, CEICS, Avinguda Universitat 1,43204Reus, Tarragona,Spain
| | - Anna Crescenti
- Centre Tecnològic de Nutrició i Salut (CTNS),TECNIO, CEICS, Avinguda Universitat 1,43204Reus, Tarragona,Spain
| | | | - Francesc Puiggròs
- Centre Tecnològic de Nutrició i Salut (CTNS),TECNIO, CEICS, Avinguda Universitat 1,43204Reus, Tarragona,Spain
| | - Lluís Arola
- Centre Tecnològic de Nutrició i Salut (CTNS),TECNIO, CEICS, Avinguda Universitat 1,43204Reus, Tarragona,Spain
| | - Josep Maria del Bas
- Centre Tecnològic de Nutrició i Salut (CTNS),TECNIO, CEICS, Avinguda Universitat 1,43204Reus, Tarragona,Spain
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Merino J, Masana L, Guijarro C, Ascaso J, Lagares M, Civeira F. Recomendaciones para la utilización clínica de los alimentos enriquecidos con fitoesteroles/fitoestanoles en el manejo de la hipercolesterolemia. CLINICA E INVESTIGACION EN ARTERIOSCLEROSIS 2014; 26:147-58. [DOI: 10.1016/j.arteri.2014.03.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Accepted: 03/06/2014] [Indexed: 11/15/2022]
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Gylling H, Plat J, Turley S, Ginsberg HN, Ellegård L, Jessup W, Jones PJ, Lütjohann D, Maerz W, Masana L, Silbernagel G, Staels B, Borén J, Catapano AL, De Backer G, Deanfield J, Descamps OS, Kovanen PT, Riccardi G, Tokgözoglu L, Chapman MJ. Plant sterols and plant stanols in the management of dyslipidaemia and prevention of cardiovascular disease. Atherosclerosis 2014; 232:346-60. [DOI: 10.1016/j.atherosclerosis.2013.11.043] [Citation(s) in RCA: 339] [Impact Index Per Article: 33.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 11/11/2013] [Indexed: 01/02/2023]
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Amir Shaghaghi M, Harding SV, Jones PJ. Water dispersible plant sterol formulation shows improved effect on lipid profile compared to plant sterol esters. J Funct Foods 2014. [DOI: 10.1016/j.jff.2013.10.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Progress and prospective of plant sterol and plant stanol research: Report of the Maastricht meeting. Atherosclerosis 2012; 225:521-33. [DOI: 10.1016/j.atherosclerosis.2012.09.018] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Accepted: 09/16/2012] [Indexed: 12/29/2022]
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De Smet E, Mensink RP, Plat J. Effects of plant sterols and stanols on intestinal cholesterol metabolism: suggested mechanisms from past to present. Mol Nutr Food Res 2012; 56:1058-72. [PMID: 22623436 DOI: 10.1002/mnfr.201100722] [Citation(s) in RCA: 178] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2011] [Revised: 02/27/2012] [Accepted: 04/03/2012] [Indexed: 11/07/2022]
Abstract
Plant sterols and stanols are natural food ingredients found in plants. It was already shown in 1950 that they lower serum low-density lipoprotein cholesterol (LDL-C) concentrations. Meta-analysis has reported that a daily intake of 2.5 g plant sterols/stanols reduced serum LDL-C concentrations up to 10%. Despite many studies, the underlying mechanism remains to be elucidated. Therefore, the proposed mechanisms that have been presented over the past decades will be described and discussed in the context of the current knowledge. In the early days, it was suggested that plant sterols/stanols compete with intestinal cholesterol for incorporation into mixed micelles as well as into chylomicrons. Next, the focus shifted toward cellular processes. In particular, a role for sterol transporters localized in the membranes of enterocytes was suggested. All these processes ultimately lowered intestinal cholesterol absorption. More recently, the existence of a direct secretion of cholesterol from the circulation into the intestinal lumen was described. First results in animal studies suggested that plant sterols/stanols activate this pathway, which also explains the increased fecal neutral sterol content and as such could explain the cholesterol-lowering activity of plant sterols/stanols.
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Affiliation(s)
- Els De Smet
- Department of Human Biology, School for Nutrition, Toxicology and Metabolism, Maastricht University, Maastricht, The Netherlands
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28
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Rideout TC, Harding SV, Mackay DS. Metabolic and genetic factors modulating subject specific LDL-C responses to plant sterol therapy1This article is an invited review for the Journal's Made In Canada section. The authors gratefully acknowledge the training that was acquired at the Richardson Centre for Functional Foods and Nutraceuticals, University of Manitoba. We would specifically like to thank Dr. Peter Jones for his mentorship and significant contribution to the research contained within this manuscript. Can J Physiol Pharmacol 2012; 90:509-14. [DOI: 10.1139/y2012-060] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Reducing intestinal cholesterol absorption with plant sterol consumption is a well-characterized strategy to lower LDL-C and potentially reduce cardiovascular disease risk. However, over 50 years of clinical research demonstrate that there is significant heterogeneity in the individual LDL-C lowering response to plant sterol therapy. A clear understanding of why plant sterols work effectively in some individuals but not in others will ensure optimal integration of plant sterols in future personalized nutritional lipid-lowering strategies. This review will examine the current knowledge base surrounding the metabolic and genetic determinants of LDL-C lowering in response to plant sterol consumption.
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Affiliation(s)
- Todd C. Rideout
- Department of Exercise and Nutrition Sciences, University at Buffalo, Buffalo, NY, 14214, USA
| | - Scott V. Harding
- Diabetes and Nutritional Sciences Division, School of Medicine, King's College London, London SE1 9NH, UK
| | - Dylan S. Mackay
- Richardson Centre for Functional Foods and Nutraceuticals, University of Manitoba, Winnipeg, MM R3T 6C5, Canada
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Demonty I, Ras RT, van der Knaap HCM, Meijer L, Zock PL, Geleijnse JM, Trautwein EA. The effect of plant sterols on serum triglyceride concentrations is dependent on baseline concentrations: a pooled analysis of 12 randomised controlled trials. Eur J Nutr 2012; 52:153-60. [PMID: 22252793 PMCID: PMC3549411 DOI: 10.1007/s00394-011-0297-x] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2011] [Accepted: 12/20/2011] [Indexed: 10/26/2022]
Abstract
PURPOSE Plant sterols (PS) are well known for their low-density lipoprotein cholesterol-lowering effect. Until recently, they were believed to have little or no impact on blood triglycerides (TG). However, studies taken individually were possibly lacking statistical power to detect modest TG decreases. This study was performed to quantify the TG-lowering effect of PS by pooling individual subject data from 12 randomised controlled trials that investigated the effects of PS on blood lipids. METHODS The main outcome variable was the control-adjusted PS effect on relative (%) and absolute (mmol/L) changes in TG. The relative and absolute changes in high-density lipoprotein cholesterol (HDL-C) were also assessed. Differences in changes of serum lipid concentrations between PS and control treatments were estimated by an ANCOVA using a random effect model which included PS intake (active or control), study and predefined subject characteristics. RESULTS The twelve randomised controlled trials included in total 935 hypercholesterolaemic subjects not preselected based on their baseline TG concentrations. In most studies, the PS dose ranged between 1.6 and 2.5 g/day. PS intake significantly lowered serum TG by 6.0% (95% CI: -10.7, -1.2) or 0.12 mmol/L (95% CI: -0.20, -0.04). No significant interaction was observed between PS intake and baseline TG concentrations on relative changes, but, on absolute changes, interaction was significant with larger TG decreases observed with higher TG concentrations at baseline. No effects were observed on HDL-C concentrations. CONCLUSIONS These results show that PS exert a modest TG-lowering effect which is dependent on baseline concentrations.
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Affiliation(s)
- Isabelle Demonty
- Unilever R&D Vlaardingen, P.O. Box 114, 3130 AC, Vlaardingen, The Netherlands
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Abstract
The cholesterol-lowering effect of plant sterols was first discovered in the early 1950s. However, it is only recently that plant sterols have become clinically important, when advances in food-technology have made it possible to combine sterols with a variety of food products including margarines, yogurts, fruit juices and cereal bars. We review the clinical trial evidence of lipid-lowering efficacy of plant sterols and discuss their implications in routine clinical practice. To generate the evidence we searched the Pubmed database for English language literature, using relevant keywords and medical subject heading (MeSH) terms, and extracted the findings from recently published studies and meta-analyses on this topic. Our findings suggest that the short-term use of food supplements rich in plant sterols is a safe and effective strategy; to maximize the benefits of dietary and lifestyle therapy, either with or without statin therapy, among majority of dyslipidemic patients with need for additional lipid-lowering.
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Affiliation(s)
- A K Gupta
- International Centre for Circulatory Health, National Heart & Lung Institute, Imperial College London, 59-61 North Wharf Road, London, UK.
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31
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Watts GF. Nutrition and metabolism: nutritional therapy for disordered triglyceride metabolism and nonalcoholic fatty liver disease. Curr Opin Lipidol 2010; 21:545-7. [PMID: 21206342 DOI: 10.1097/mol.0b013e3283404fb5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Mensink RP, de Jong A, Lütjohann D, Haenen GR, Plat J. Plant stanols dose-dependently decrease LDL-cholesterol concentrations, but not cholesterol-standardized fat-soluble antioxidant concentrations, at intakes up to 9 g/d. Am J Clin Nutr 2010; 92:24-33. [PMID: 20504972 DOI: 10.3945/ajcn.2009.29143] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND It is unclear whether plant stanols lower serum LDL-cholesterol concentrations and cholesterol-standardized fat-soluble antioxidant concentrations dose-dependently when consumption exceeds the recommended daily intakes of 2.0-3.0 g. OBJECTIVE The objective was to study the relation between plant stanols provided as plant stanol esters on changes in serum concentrations of LDL cholesterol and fat-soluble antioxidants. DESIGN Healthy subjects (n = 93) with slightly elevated serum total cholesterol concentrations (5.0-8.0 mmol/L) received, after a 3-wk run-in period, control products (n = 22) or products (margarine and soy-based yogurt) providing 3 g (n = 24), 6 g (n = 22), or 9 g (n = 25) plant stanols provided as fatty acid esters for 4 wk. RESULTS Serum LDL cholesterol decreased dose-dependently. Compared with control, decreases in the 3-g group were 0.32 mmol/L (7.4%; P = 0.005 after adjustment for multiple comparisons). An intake of 6 g plant stanols caused an additional decrease of 0.18 mmol/L (4.5%; P = 0.100 compared with the 3-g group). In the 9-g group, a further decrease of 0.22 mmol/L (5.4%) was observed (P = 0.048 compared with the 6-g group). Serum LDL-cholesterol concentrations were lowered by 17.4% in the 9-g group compared with the control group. No effects on cholesterol-standardized beta-carotene concentrations were observed. Even the change of -0.01 mumol/mmol cholesterol (or -9.2%; P = 0.341) in the 3-g group compared with the control group was not statistically significant because of the large variation in response. Serum HDL-cholesterol and triacylglycerol concentrations, cholesterol-standardized alpha-tocopherol and lutein concentrations, and plasma markers reflecting liver and renal function were not affected. CONCLUSIONS Daily consumption of plant stanols up to 9 g reduces serum LDL-cholesterol concentrations linearly up to 17.4%. For cholesterol-standardized fat-soluble antioxidant concentrations, such a relation could not be ascertained.
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Affiliation(s)
- Ronald P Mensink
- Department of Human Biology, Maastricht University, Maastricht, Netherlands.
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