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Hong BV, Zheng JJ, Romo EZ, Agus JK, Tang X, Arnold CD, Adu-Afarwuah S, Lartey A, Okronipa H, Dewey KG, Zivkovic AM. Seasonal Factors Are Associated with Activities of Enzymes Involved in High-Density Lipoprotein Metabolism among Pregnant Females in Ghana. Curr Dev Nutr 2023; 7:102041. [PMID: 38130330 PMCID: PMC10733676 DOI: 10.1016/j.cdnut.2023.102041] [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: 08/14/2023] [Revised: 11/15/2023] [Accepted: 11/19/2023] [Indexed: 12/23/2023] Open
Abstract
Background Small-quantity lipid-based nutrient supplements (SQ-LNS) during pregnancy and postnatally were previously shown to improve high-density lipoprotein (HDL) cholesterol efflux capacity (CEC) and length in the children of supplemented mothers at 18 mo of age in the International Lipid-Based Nutrient Supplements (iLiNS) DYAD trial in Ghana. However, the effects of SQ-LNS on maternal HDL functionality during pregnancy are unknown. Objective The goal of this cross-sectional, secondary outcome analysis was to compare HDL function in mothers supplemented with SQ-LNS vs. iron and folic acid (IFA) during gestation. Methods HDL CEC and the activities of 3 HDL-associated enzymes were analyzed in archived plasma samples (N = 197) from a subsample of females at 36 weeks of gestation enrolled in the iLiNS-DYAD trial in Ghana. Correlations between HDL function and birth outcomes, inflammatory markers C-reactive protein (CRP) and alpha-1-acid glycoprotein (AGP), and the effects of season were explored to determine the influence of these factors on HDL function in this cohort of pregnant females. Results There were no statistically significant differences in HDL CEC, plasma lecithin-cholesterol acyltransferase (LCAT) activity, cholesteryl ester transfer protein (CETP) activity, or phospholipid transfer protein (PLTP) activity between mothers supplemented with SQ-LNS compared with IFA control, and no statistically significant relationships between maternal HDL function and childbirth outcomes. LCAT activity was negatively correlated with plasma AGP (R = -0.19, P = 0.007) and CRP (R = -0.28, P < 0.001), CETP and LCAT activity were higher during the dry season compared to the wet season, and PLTP activity was higher in the wet season compared to the dry season. Conclusions Mothers in Ghana supplemented with SQ-LNS compared with IFA during gestation did not have measurable differences in HDL functionality, and maternal HDL function was not associated with childbirth outcomes. However, seasonal factors and markers of inflammation were associated with HDL function, indicating that these factors had a stronger influence on HDL functionality than SQ-LNS supplementation during pregnancy. Clinical Trial Registry number The study was registered as NCT00970866. https://clinicaltrials.gov/study/NCT00970866.
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Affiliation(s)
- Brian V Hong
- Department of Nutrition, University of California, Davis, Davis, CA, United States
| | - Jack Jingyuan Zheng
- Department of Nutrition, University of California, Davis, Davis, CA, United States
| | - Eduardo Z Romo
- Department of Nutrition, University of California, Davis, Davis, CA, United States
| | - Joanne K Agus
- Department of Nutrition, University of California, Davis, Davis, CA, United States
| | - Xinyu Tang
- Department of Nutrition, University of California, Davis, Davis, CA, United States
| | - Charles D Arnold
- Department of Nutrition, University of California, Davis, Davis, CA, United States
| | - Seth Adu-Afarwuah
- Department of Nutrition and Food Science, University of Ghana, Legon, Ghana
| | - Anna Lartey
- Department of Nutrition and Food Science, University of Ghana, Legon, Ghana
| | - Harriet Okronipa
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK, United States
| | - Kathryn G Dewey
- Department of Nutrition, University of California, Davis, Davis, CA, United States
| | - Angela M Zivkovic
- Department of Nutrition, University of California, Davis, Davis, CA, United States
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Balatskyi VV, Dobrzyn P. Role of Stearoyl-CoA Desaturase 1 in Cardiovascular Physiology. Int J Mol Sci 2023; 24:ijms24065531. [PMID: 36982607 PMCID: PMC10059744 DOI: 10.3390/ijms24065531] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/09/2023] [Accepted: 03/12/2023] [Indexed: 03/15/2023] Open
Abstract
Stearoyl-CoA desaturase is a rate-limiting enzyme in the synthesis of monounsaturated fatty acids. Monounsaturated fatty acids limit the toxicity of exogenous saturated fats. Studies have shown that stearoyl-CoA desaturase 1 is involved in the remodeling of cardiac metabolism. The loss of stearoyl-CoA desaturase 1 reduces fatty acid oxidation and increases glucose oxidation in the heart. Such a change is protective under conditions of a high-fat diet, which reduces reactive oxygen species-generating β-oxidation. In contrast, stearoyl-CoA desaturase 1 deficiency predisposes individuals to atherosclerosis under conditions of hyperlipidemia but protects against apnea-induced atherosclerosis. Stearoyl-CoA desaturase 1 deficiency also impairs angiogenesis after myocardial infarction. Clinical data show a positive correlation between blood stearoyl-CoA Δ-9 desaturation rates and cardiovascular disease and mortality. Moreover, stearoyl-CoA desaturase inhibition is considered an attractive intervention in some obesity-associated pathologies, and the importance of stearoyl-CoA desaturase in the cardiovascular system might be a limitation for developing such therapy. This review discusses the role of stearoyl-CoA desaturase 1 in the regulation of cardiovascular homeostasis and the development of heart disease and presents markers of systemic stearoyl-CoA desaturase activity and their predictive potential in the diagnosis of cardiovascular disorders.
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Liang PL, Chen XL, Gong MJ, Xu Y, Tu HS, Zhang L, Liao BS, Qiu XH, Zhang J, Huang ZH, Xu W. Guang Chen Pi (the pericarp of Citrus reticulata Blanco's cultivars 'Chachi') inhibits macrophage-derived foam cell formation. JOURNAL OF ETHNOPHARMACOLOGY 2022; 293:115328. [PMID: 35489660 DOI: 10.1016/j.jep.2022.115328] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 04/22/2022] [Accepted: 04/23/2022] [Indexed: 06/14/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The dried pericarp of Citrus reticulata Blanco (CP) occupies an important position in the history of clinical applications of traditional Chinese medicine (TCM). In traditional use, CP is used to treat diseases related to the digestive, respiratory, and cardiovascular systems, as well as to regulate Qi and promote blood circulation throughout the body. In China, a special cultivar of CP named Guang Chen Pi (GCP) which is collected exclusively from Citrus reticulata Blanco's cultivars 'Chachi', is considered to be the best CP with high medicinal and dietary value. Modern pharmacology shows that CP has high effect on regulating metabolic disorders and cardiovascular systems diseases. Atherosclerosis (AS) is not only an inflammatory disease but also cardiovascular lipid metabolism disorder. Foam cells formation is the hallmark of AS. Several reports indicated that CP can mitigate the development of AS, but involved signaling pathway and its role in foam cell formation is unclear. Since the main components of GCP has protective effects in cardiovascular diseases, we evaluated its effect of inhibiting foam cell formation to support the traditional usage of GCP. AIM OF THE STUDY The objective of this study aims to investigate the effects of GCP on suppressing RAW264.7 foam cell formation and anti-inflammatory in vitro. MATERIALS AND METHODS To evaluate the anti-foam cell formation and anti-inflammatory activity of GCP, oxidized low-density lipoprotein (ox-LDL) induced RAW264.7 macrophages model was involved. Meantime, foam cell developing status was also closely monitored. RT-qPCR and Western blot were then applied to further investigate receptors in associated signaling pathways. RESULTS GCP shown inhibitory effect on macrophage-derived foam cell formation in Oil Red O staining analysis, which was further confirmed by flow cytometry of Dil-ox-LDL staining and TG and TC analysis. The HDL-mediated cholesterol efflux was also promoted by GCP. Mechanistic studies showed that GCP significantly down-regulate SRA1 and CD36 protein expression, while significantly increasing the expression of PPARγ, LXRα, SRB1 and ABCG1. Also, GCP reduced ox-LDL-induced inflammatory factors level, and inhibited phosphorylation of p38 MAPK, ERK1/2, JNK1/2, NF-κB p65 and IKKα/β. CONCLUSIONS GCP exhibited anti-atherogenic ability by interfering RAW264.7 foam cell formation, through inhibiting lipid uptake and promoting HDL-mediated cholesterol. PPARγ-LXRα-ABCG1/SRB1 pathway and its anti-inflammatory effect may involve. This proposed anti-foam cell formation activity is expected to provide new insight on comprehensive utilization of GCP.
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Affiliation(s)
- Pu-Lin Liang
- Key Laboratory of Quality Evaluation of Chinese Medicine of the Guangdong Provincial Medical Products Administration, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Xue-Lian Chen
- Key Laboratory of Quality Evaluation of Chinese Medicine of the Guangdong Provincial Medical Products Administration, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Ming-Jiong Gong
- Key Laboratory of Quality Evaluation of Chinese Medicine of the Guangdong Provincial Medical Products Administration, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Ya Xu
- Key Laboratory of Quality Evaluation of Chinese Medicine of the Guangdong Provincial Medical Products Administration, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Hai-Sheng Tu
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Liang Zhang
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036, China.
| | - Bao-Sheng Liao
- Key Laboratory of Quality Evaluation of Chinese Medicine of the Guangdong Provincial Medical Products Administration, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510006, China; Guangzhou Key Laboratory of Chirality Research on Active Components of Traditional Medicine, Guangzhou, 510006, China.
| | - Xiao-Hui Qiu
- Key Laboratory of Quality Evaluation of Chinese Medicine of the Guangdong Provincial Medical Products Administration, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510006, China; Guangzhou Key Laboratory of Chirality Research on Active Components of Traditional Medicine, Guangzhou, 510006, China.
| | - Jing Zhang
- Key Laboratory of Quality Evaluation of Chinese Medicine of the Guangdong Provincial Medical Products Administration, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Zhi-Hai Huang
- Key Laboratory of Quality Evaluation of Chinese Medicine of the Guangdong Provincial Medical Products Administration, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510006, China.
| | - Wen Xu
- Key Laboratory of Quality Evaluation of Chinese Medicine of the Guangdong Provincial Medical Products Administration, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510006, China; Guangzhou Key Laboratory of Chirality Research on Active Components of Traditional Medicine, Guangzhou, 510006, China.
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Hong B, Zhu C, Wong M, Sacchi R, Rhodes CH, Kang JW, Arnold CD, Adu-Afarwuah S, Lartey A, Oaks BM, Lebrilla CB, Dewey KG, Zivkovic AM. Lipid-Based Nutrient Supplementation Increases High-Density Lipoprotein (HDL) Cholesterol Efflux Capacity and Is Associated with Changes in the HDL Glycoproteome in Children. ACS OMEGA 2021; 6:32022-32031. [PMID: 34870025 PMCID: PMC8638293 DOI: 10.1021/acsomega.1c04811] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 11/08/2021] [Indexed: 05/08/2023]
Abstract
Prenatal plus postnatal small-quantity lipid-based nutrient supplements (SQ-LNS) improved child growth at 18 months in the International Lipid-Based Nutrient Supplements DYAD trial in Ghana. In this secondary outcome analysis, we determined whether SQ-LNS versus prenatal iron and folic acid (IFA) supplementation improves the cholesterol efflux capacity (CEC) of high-density lipoprotein (HDL) particles and alters their lipidomic, proteomic, or glycoproteomic composition in a subset of 80 children at 18 months of age. HDL CEC was higher among children in the SQ-LNS versus IFA group (20.9 ± 4.1 vs 19.4 ± 3.3%; one-tailed p = 0.038). There were no differences in HDL lipidomic or proteomic composition between groups. Twelve glycopeptides out of the 163 analyzed were significantly altered by SQ-LNS, but none of the group differences remained significant after correction for multiple testing. Exploratory analysis showed that 6 out of the 33 HDL-associated proteins monitored differed in glycopeptide enrichment between intervention groups, and 6 out of the 163 glycopeptides were correlated with CEC. We conclude that prenatal plus postnatal SQ-LNS may modify HDL protein glycoprofiles and improve the CEC of HDL particles in children, which may have implications for subsequent child health outcomes. This trial was registered at clinicaltrials.gov as NCT00970866.
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Affiliation(s)
- Brian
V. Hong
- Department
of Nutrition, University of California,
Davis, Davis 95616, California, United States
| | - Chenghao Zhu
- Department
of Nutrition, University of California,
Davis, Davis 95616, California, United States
| | - Maurice Wong
- Department
of Chemistry, University of California,
Davis, Davis 95616, California, United States
| | - Romina Sacchi
- Department
of Nutrition, University of California,
Davis, Davis 95616, California, United States
| | - Christopher H. Rhodes
- Department
of Nutrition, University of California,
Davis, Davis 95616, California, United States
| | - Jea Woo Kang
- Department
of Nutrition, University of California,
Davis, Davis 95616, California, United States
| | - Charles D. Arnold
- Department
of Nutrition, University of California,
Davis, Davis 95616, California, United States
| | - Seth Adu-Afarwuah
- Department
of Nutrition and Food Science, University
of Ghana, Legon LG 134, Ghana
| | - Anna Lartey
- Department
of Nutrition and Food Science, University
of Ghana, Legon LG 134, Ghana
| | - Brietta M. Oaks
- Department
of Nutrition and Food Sciences, University
of Rhode Island, Kingston 02881-2003, Rhode Island, United States
| | - Carlito B. Lebrilla
- Department
of Chemistry, University of California,
Davis, Davis 95616, California, United States
| | - Kathryn G. Dewey
- Department
of Nutrition, University of California,
Davis, Davis 95616, California, United States
| | - Angela M. Zivkovic
- Department
of Nutrition, University of California,
Davis, Davis 95616, California, United States
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5
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Yuan Q, Xie F, Huang W, Hu M, Yan Q, Chen Z, Zheng Y, Liu L. The review of alpha-linolenic acid: Sources, metabolism, and pharmacology. Phytother Res 2021; 36:164-188. [PMID: 34553434 DOI: 10.1002/ptr.7295] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/17/2021] [Accepted: 09/08/2021] [Indexed: 12/18/2022]
Abstract
α-linolenic acid (ALA, 18:3n-3) is a carboxylic acid composed of 18 carbon atoms and three cis double bonds, and is an essential fatty acid indispensable to the human body. This study aims to systematically review related studies on the dietary sources, metabolism, and pharmacological effects of ALA. Information on ALA was collected from the internet database PubMed, Elsevier, ResearchGate, Web of Science, Wiley Online Library, and Europe PMC using a combination of keywords including "pharmacology," "metabolism," "sources." The following findings are mainly contained. (a) ALA can only be ingested from food and then converted into eicosapentaenoic acid and docosahexaenoic acid in the body. (b) This conversion process is relatively limited and affected by many factors such as dose, gender, and disease. (c) Pharmacological research shows that ALA has the anti-metabolic syndrome, anticancer, antiinflammatory, anti-oxidant, anti-obesity, neuroprotection, and regulation of the intestinal flora properties. (d) There are the most studies that prove ALA has anti-metabolic syndrome effects, including experimental studies and clinical trials. (e) The therapeutic effect of ALA will be affected by the dosage. In short, ALA is expected to treat many diseases, but further high quality studies are needed to firmly establish the clinical efficacy of ALA.
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Affiliation(s)
- Qianghua Yuan
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Fan Xie
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Wei Huang
- Hanyuan Hospital of Traditional Chinese Medicine, Yaan, China
| | - Mei Hu
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Qilu Yan
- Hanyuan Hospital of Traditional Chinese Medicine, Yaan, China
| | - Zemou Chen
- Hanyuan Hospital of Traditional Chinese Medicine, Yaan, China
| | - Yan Zheng
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Li Liu
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
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6
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Ghanavati M, Alipour Parsa S, Nasrollahzadeh J. A calorie-restricted diet with nuts favourably raises plasma high-density lipoprotein-cholesterol in overweight and obese patients with stable coronary heart disease: A randomised controlled trial. Int J Clin Pract 2021; 75:e14431. [PMID: 34080258 DOI: 10.1111/ijcp.14431] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 05/08/2021] [Accepted: 05/29/2021] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Weight loss and consumption of nuts may both improve plasma lipids and lipoproteins. However, their effects in patients with coronary artery disease (CAD) who are under treatment with statins remain unclear. This study was conducted to determine plasma lipid and lipoprotein responses to a low-calorie (25% of energy deficit) nuts containing diet (NELCD) compared with a nut-free energy-restricted diet (NFLCD) in stable CAD patients who were overweight or obese (n = 67). METHODS Plasma lipids and lipoproteins and ATP-binding cassette (ABC) A1 and ABCG1 mRNA expressions in peripheral blood mononuclear cells (PBMCs) isolated from patients were assessed at baseline and after 8 weeks. RESULTS Plasma high-density lipoprotein (HDL) cholesterol and apoA1 increased significantly in the NELCD group at the end of Week 8 compared with those in NFLCD group (in NELCD group, mean change and 95% confidence interval (CI) were 1.17 [-1.31, 3.66] mg/dL, P = 0.012, and 2.55 [-2.10, 7.20] mg/dL, P = 0.011, for HDL cholesterol and apoA1, respectively). In both groups, the concentrations of total cholesterol, low-density lipoprotein cholesterol and triglyceride reduced significantly at Week 8 compared with those in baseline with no significant difference between the two groups. ABCA1 and ABCG1 mRNA expressions non-significantly decreased in both groups. CONCLUSION This study indicates that inclusion of nuts as part of a calorie-restricted diet improves the concentrations of HDL cholesterol and apoA-1 in patients with stable, established CHD receiving statins.
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Affiliation(s)
- Matin Ghanavati
- Department of Clinical Nutrition & Dietetics, Faculty of Nutrition and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Saeed Alipour Parsa
- Cardiovascular Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Javad Nasrollahzadeh
- Department of Clinical Nutrition & Dietetics, Faculty of Nutrition and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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7
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Soltani S, Boozari M, Cicero AFG, Jamialahmadi T, Sahebkar A. Effects of phytochemicals on macrophage cholesterol efflux capacity: Impact on atherosclerosis. Phytother Res 2021; 35:2854-2878. [PMID: 33464676 DOI: 10.1002/ptr.6991] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 10/19/2020] [Accepted: 12/11/2020] [Indexed: 12/24/2022]
Abstract
High-density lipoprotein cholesterol (HDL) is the major promoter of reverse cholesterol transport and efflux of excess cellular cholesterol. The functions of HDL, such as cholesterol efflux, are associated with cardiovascular disease rather than HDL levels. We have reviewed the evidence base on the major classes of phytochemicals, including polyphenols, alkaloids, carotenoids, phytosterols, and fatty acids, and their effects on macrophage cholesterol efflux and its major pathways. Phytochemicals show the potential to improve the efficiency of each of these pathways. The findings are mainly in preclinical studies, and more clinical research is warranted in this area to develop novel clinical applications.
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Affiliation(s)
- Saba Soltani
- Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Motahareh Boozari
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Arrigo F G Cicero
- Hypertension and Cardiovascular Risk Factors Research Center, Medical and Surgical Sciences Department, University of Bologna, Bologna, Italy
| | - Tannaz Jamialahmadi
- Department of Food Science and Technology, Quchan Branch, Islamic Azad University, Quchan, Iran.,Department of Nutrition, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Halal Research Center of IRI, FDA, Tehran, Iran.,Polish Mother's Memorial Hospital Research Institute (PMMHRI), Lodz, Poland
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8
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Petersen KS, Bowen KJ, Tindall AM, Sullivan VK, Johnston EA, Fleming JA, Kris-Etherton PM. The Effect of Inflammation and Insulin Resistance on Lipid and Lipoprotein Responsiveness to Dietary Intervention. Curr Dev Nutr 2020; 4:nzaa160. [PMID: 33447695 PMCID: PMC7792751 DOI: 10.1093/cdn/nzaa160] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 10/02/2020] [Accepted: 10/13/2020] [Indexed: 12/14/2022] Open
Abstract
Lipids and lipoproteins are major targets for cardiovascular disease (CVD) prevention. Findings from a limited number of clinical trials suggest diet-induced atherogenic lipoprotein lowering can be altered in the presence of chronic low-grade inflammation or insulin resistance. This review summarizes results from randomized controlled trials that have examined diet-induced changes in lipids/lipoproteins by inflammatory or insulin sensitivity status. In addition, mechanisms to explain these clinical observations are explored. Post hoc analyses of data from a limited number of randomized controlled trials suggest attenuation of diet-induced lipid/lipoprotein lowering in individuals with inflammation and/or insulin resistance. These findings are supported by experimental studies showing that inflammatory stimuli and hyperinsulinemia alter genes involved in endogenous cholesterol synthesis and cholesterol uptake, reduce cholesterol efflux, and increase fatty acid biosynthesis. Further a priori defined research is required to better characterize how chronic low-grade inflammation and insulin resistance modulate lipid and lipoprotein responsiveness to guide CVD risk reduction in individuals presenting with these phenotypes.
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Affiliation(s)
- Kristina S Petersen
- Department of Nutritional Sciences, Texas Tech University, Lubbock, TX, USA
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, USA
| | - Kate J Bowen
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, USA
| | - Alyssa M Tindall
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, USA
| | - Valerie K Sullivan
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, USA
| | - Emily A Johnston
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, USA
| | - Jennifer A Fleming
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, USA
| | - Penny M Kris-Etherton
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, USA
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9
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Luo Y, Wang L, Lv Y, Wu X, Hou C, Li J. Regulation mechanism of silkworm pupa oil PUFAs on cholesterol metabolism in hepatic cell L-02. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2020; 100:1418-1425. [PMID: 31667852 DOI: 10.1002/jsfa.10115] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 10/18/2019] [Accepted: 10/25/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Silkworm pupa oil polyunsaturated fatty acid (SPO PUFA) has been confirmed to have a cholesterol-lowering function. METHODS AND RESULTS The effect of SPO PUFA and its main component, α-linolenic acid (ALA), on the metabolism of cholesterol and its regulation was investigated. The model of lipid denatured cells were constructed to carry out lipid accumulation, cholesterol metabolism and transformation. Real-time PCR and western blots were also used to analyze the expression levels of related genes and proteins to investigate the cholesterol efflux regulation mechanism. The data indicated that SPO PUFA and ALA dose-dependently decreased intracellular total cholesterol (TC) and enhanced total bile acid (TBA). They could also promote cholesterol removal by enhancing bile acid secretion and by upregulating genes LXRα, PPARγ, ABCA1, ABCG1, and CYP7A1, which were regulated by LXRα/PPARγ-ABCA1/ABCG1-CYP7A1 nuclear receptor signal pathways. CONCLUSIONS This study is of great significance in maintaining the balance of cholesterol and lipid metabolism, and in reducing the risk of steatohepatitis. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Ying Luo
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, China
- University Key Laboratory of Food Processing Byproducts for Advanced Development and High Value Utilization, Xi'an, China
| | - Lifang Wang
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, China
| | - Yongzhong Lv
- Gansu Research Institute of Sports Science, Lanzhou, China
| | - Xiaoxia Wu
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, China
- University Key Laboratory of Food Processing Byproducts for Advanced Development and High Value Utilization, Xi'an, China
| | - Chen Hou
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, China
- University Key Laboratory of Food Processing Byproducts for Advanced Development and High Value Utilization, Xi'an, China
| | - Jianke Li
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, China
- University Key Laboratory of Food Processing Byproducts for Advanced Development and High Value Utilization, Xi'an, China
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10
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Pi H, Wang Z, Liu M, Deng P, Yu Z, Zhou Z, Gao F. SCD1 activation impedes foam cell formation by inducing lipophagy in oxLDL-treated human vascular smooth muscle cells. J Cell Mol Med 2019; 23:5259-5269. [PMID: 31119852 PMCID: PMC6652860 DOI: 10.1111/jcmm.14401] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 04/23/2019] [Accepted: 05/06/2019] [Indexed: 12/20/2022] Open
Abstract
The formation of fat-laden foam cells, which contributes to the fatty streaks in the plaques of atheromas, is an important process in atherosclerosis. Vascular smooth muscle cells (VSMCs) are a critical origin of foam cells. However, the mechanisms that underlie VSMC foam cell formation are not yet completely understood. Here, we demonstrated that oxidized low-density lipoprotein (oxLDL) inhibited lipophagy by suppressing lipid droplet (LD)-lysosome fusion and increased VSMC foam cell formation. Moreover, although oxLDL treatment inhibited lysosomal biogenesis, it had no significant effect on lysosomal proteolysis and lysosomal pH. Notably, through TMT-based quantitative proteomic analysis and database searching, 94 differentially expressed proteins were identified, of which 54 were increased and 40 were decreased in the oxLDL group compared with those in the control group. Subsequently, SCD1, a protein of interest, was further investigated. SCD1 levels in the VSMCs were down-regulated by exposure to oxLDL in a time-dependent manner and the interaction between SCD1 and LDs was also disrupted by oxLDL. Importantly, SCD1 overexpression enhanced LD-lysosome fusion, increased lysosomal biogenesis and inhibited VSMC foam cell formation by activating TFEB nuclear translocation and its reporter activity. Modulation of the SCD1/TFEB-mediated lipophagy machinery may offer novel therapeutic approaches for the treatment of atherosclerosis.
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Affiliation(s)
- Huifeng Pi
- School of Aerospace MedicineFourth Military Medical UniversityXi'anChina
- Department of Occupational HealthThird Military Medical UniversityChongqingChina
| | - Zhen Wang
- School of Aerospace MedicineFourth Military Medical UniversityXi'anChina
| | - Mengyu Liu
- Department of Occupational HealthThird Military Medical UniversityChongqingChina
| | - Ping Deng
- Department of Occupational HealthThird Military Medical UniversityChongqingChina
| | - Zhengping Yu
- Department of Occupational HealthThird Military Medical UniversityChongqingChina
- State Key Laboratory of Trauma, Burns and Combined InjuryThird Military Medical UniversityChongqingChina
| | - Zhou Zhou
- Department of Environmental Medicine, Department of Emergency Medicine of the First Affiliated HospitalZhejiang University School of MedicineHangzhouChina
| | - Feng Gao
- School of Aerospace MedicineFourth Military Medical UniversityXi'anChina
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11
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Gallagher H, Williams JO, Ferekidis N, Ismail A, Chan YH, Michael DR, Guschina IA, Tyrrell VJ, O'Donnell VB, Harwood JL, Khozin-Goldberg I, Boussiba S, Ramji DP. Dihomo-γ-linolenic acid inhibits several key cellular processes associated with atherosclerosis. Biochim Biophys Acta Mol Basis Dis 2019; 1865:2538-2550. [PMID: 31202985 PMCID: PMC6620504 DOI: 10.1016/j.bbadis.2019.06.011] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 05/31/2019] [Accepted: 06/10/2019] [Indexed: 12/16/2022]
Abstract
Atherosclerosis and its complications are responsible for one in three global deaths. Nutraceuticals show promise in the prevention and treatment of atherosclerosis but require an indepth understanding of the mechanisms underlying their actions. A previous study showed that the omega-6 fatty acid, dihomo-γ-linolenic acid (DGLA), attenuated atherosclerosis in the apolipoprotein E deficient mouse model system. However, the mechanisms underlying such protective effects of DGLA are poorly understood and were therefore investigated. We show that DGLA attenuates chemokine-driven monocytic migration together with foam cell formation and the expression of key pro-atherogenic genes induced by three pro-inflammatory cytokines in human macrophages. The effect of DGLA on interferon-γ signaling was mediated via inhibition of signal transducer and activator of transcription-1 phosphorylation on serine 727. In relation to anti-foam cell action, DGLA inhibits modified LDL uptake by both macropinocytosis and receptor-mediated endocytosis, the latter by reduction in expression of two key scavenger receptors (SR-A and CD36), and stimulates cholesterol efflux from foam cells. DGLA also improves macrophage mitochondrial bioenergetic profile by decreasing proton leak. Gamma-linolenic acid and prostaglandin E1, upstream precursor and key metabolite respectively of DGLA, also acted in an anti-atherogenic manner. The actions of DGLA extended to other key atherosclerosis-associated cell types with attenuation of endothelial cell proliferation and migration of smooth muscle cells in response to platelet-derived growth factor. This study provides novel insights into the molecular mechanisms underlying the anti-atherogenic actions of DGLA and supports further assessments on its protective effects on plaque regression in vivo and in human trials. Dihomo-γ-linolenic acid (DGLA) attenuates atherosclerosis in a mouse model system. The mechanisms underlying anti-atherogenic actions of DGLA are poorly understood. DGLA inhibited atherogenic processes in three key cell types in this disease. Mechanisms underlying such protective actions of DGLA were identified. Studies inform on the beneficial anti-atherogenic actions of DGLA.
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Affiliation(s)
- Hayley Gallagher
- Cardiff School of Biosciences, Cardiff University, Sir Martin Evans Building, Museum Avenue, Cardiff CF10 3AX, UK
| | - Jessica O Williams
- Cardiff School of Biosciences, Cardiff University, Sir Martin Evans Building, Museum Avenue, Cardiff CF10 3AX, UK
| | - Nele Ferekidis
- Cardiff School of Biosciences, Cardiff University, Sir Martin Evans Building, Museum Avenue, Cardiff CF10 3AX, UK
| | - Alaa Ismail
- Cardiff School of Biosciences, Cardiff University, Sir Martin Evans Building, Museum Avenue, Cardiff CF10 3AX, UK
| | - Yee-Hung Chan
- Cardiff School of Biosciences, Cardiff University, Sir Martin Evans Building, Museum Avenue, Cardiff CF10 3AX, UK
| | - Daryn R Michael
- Cardiff School of Biosciences, Cardiff University, Sir Martin Evans Building, Museum Avenue, Cardiff CF10 3AX, UK
| | - Irina A Guschina
- Cardiff School of Biosciences, Cardiff University, Sir Martin Evans Building, Museum Avenue, Cardiff CF10 3AX, UK
| | - Victoria J Tyrrell
- Systems Immunity Research Institute, School of Medicine, Cardiff University, Cardiff CF14 4XN, UK
| | - Valerie B O'Donnell
- Systems Immunity Research Institute, School of Medicine, Cardiff University, Cardiff CF14 4XN, UK
| | - John L Harwood
- Cardiff School of Biosciences, Cardiff University, Sir Martin Evans Building, Museum Avenue, Cardiff CF10 3AX, UK
| | - Inna Khozin-Goldberg
- Microalgal Biotechnology Laboratory, French Associates Institute for Agriculture and Biotechnology of Drylands, J. Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, 84990, Israel
| | - Sammy Boussiba
- Microalgal Biotechnology Laboratory, French Associates Institute for Agriculture and Biotechnology of Drylands, J. Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, 84990, Israel
| | - Dipak P Ramji
- Cardiff School of Biosciences, Cardiff University, Sir Martin Evans Building, Museum Avenue, Cardiff CF10 3AX, UK.
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12
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Manninen S, Lankinen M, Erkkilä A, Nguyen SD, Ruuth M, de Mello V, Öörni K, Schwab U. The effect of intakes of fish and Camelina sativa oil on atherogenic and anti-atherogenic functions of LDL and HDL particles: A randomized controlled trial. Atherosclerosis 2018; 281:56-61. [PMID: 30658192 DOI: 10.1016/j.atherosclerosis.2018.12.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 11/29/2018] [Accepted: 12/13/2018] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND AIMS Omega-3 fatty acids are known to have several cardioprotective effects. Our aim was to investigate the effects of intakes of fish and Camelina sativa oil (CSO), rich in alpha-linolenic acid, on the atherogenic and anti-atherogenic functions of LDL and HDL particles. METHODS Altogether, 88 volunteers with impaired glucose metabolism were randomly assigned to CSO (10 g of alpha-linolenic acid/day), fatty fish (4 fish meals/week), lean fish (4 fish meals/week) or control group for 12 weeks. 79 subjects completed the study. The binding of lipoproteins to aortic proteoglycans, LDL aggregation and activation of endothelial cells by LDL and cholesterol efflux capacity of HDL were determined in vitro. RESULTS Intake of CSO decreased the binding of lipoproteins to aortic proteoglycans in a non-normalized model (p = 0.006). After normalizing with serum concentrations of non-HDL cholesterol, apolipoprotein B (apoB) or LDL cholesterol, which decreased in the CSO group, the change was no longer statistically significant. In the fish groups, there were no changes in the binding of lipoproteins to proteoglycans. Regarding other lipoprotein functions, there were no changes in any of the groups. CONCLUSIONS Intake of CSO decreases the binding of lipoproteins to aortic proteoglycans by decreasing serum LDL cholesterol concentration, which suggests that the level of apoB-containing lipoproteins in the circulation is the main driver of lipoprotein retention within the arterial wall. Intake of fish or CSO has no effects on other lipoprotein functions.
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Affiliation(s)
- Suvi Manninen
- Institute of Public Health and Clinical Nutrition, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland.
| | - Maria Lankinen
- Institute of Public Health and Clinical Nutrition, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Arja Erkkilä
- Institute of Public Health and Clinical Nutrition, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Su Duy Nguyen
- Atherosclerosis Research Laboratory, Wihuri Research Institute, Helsinki, Finland
| | - Maija Ruuth
- Atherosclerosis Research Laboratory, Wihuri Research Institute, Helsinki, Finland; Research Programs Unit, University of Helsinki, Finland
| | - Vanessa de Mello
- Institute of Public Health and Clinical Nutrition, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Katariina Öörni
- Atherosclerosis Research Laboratory, Wihuri Research Institute, Helsinki, Finland
| | - Ursula Schwab
- Institute of Public Health and Clinical Nutrition, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland; Department of Medicine, Endocrinology and Clinical Nutrition, Kuopio University Hospital, Finland
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13
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Liu X, Garban J, Jones PJ, Vanden Heuvel J, Lamarche B, Jenkins DJ, Connelly PW, Couture P, Pu S, Fleming JA, West SG, Kris-Etherton PM. Diets Low in Saturated Fat with Different Unsaturated Fatty Acid Profiles Similarly Increase Serum-Mediated Cholesterol Efflux from THP-1 Macrophages in a Population with or at Risk for Metabolic Syndrome: The Canola Oil Multicenter Intervention Trial. J Nutr 2018; 148:721-728. [PMID: 30053283 PMCID: PMC6669947 DOI: 10.1093/jn/nxy040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 02/12/2018] [Indexed: 01/02/2023] Open
Abstract
Background Cholesterol efflux plays an important role in preventing atherosclerosis progression. Vegetable oils with varying unsaturated fatty acid profiles favorably affect multiple cardiovascular disease risk factors; however, their effects on cholesterol efflux remain unclear. Objective The objectives of this study were to examine the effects of diets low in saturated fatty acids (SFAs) with varying unsaturated fatty acid profiles on serum-mediated cholesterol efflux and its association with the plasma lipophilic index and central obesity. Methods The present study is a randomized, crossover, controlled-feeding study. Participants [men: n = 50; women: n = 51; mean ± SE age: 49.5 ± 1.2 y; body mass index (in kg/m2): 29.4 ± 0.4] at risk for or with metabolic syndrome (MetS) were randomly assigned to 5 isocaloric diets containing the treatment oils: canola oil, high oleic acid-canola oil, DHA-enriched high oleic acid-canola oil, corn oil and safflower oil blend, and flax oil and safflower oil blend. These treatment oils were incorporated into smoothies that participants consumed 2 times/d. For a 3000-kcal diet, 60 g of treatment oil was required to provide 18% of total energy per day. Each diet period was 4 wk followed by a 2- to 4-wk washout period. We quantified cholesterol efflux capacity with a validated ex vivo high-throughput cholesterol efflux assay. Statistical analyses were performed with the use of the SAS mixed-model procedure. Results The 5 diets increased serum-mediated cholesterol efflux capacity from THP-1 macrophages similarly by 39%, 34%, 55%, 49% and 51%, respectively, compared with baseline (P < 0.05 for all). Waist circumference and abdominal adiposity were negatively correlated with serum-mediated cholesterol efflux capacity (r = -0.25, P = 0.01, r = -0.33, P = 0.02, respectively). Conclusion Diets low in SFAs with different monounsaturated fatty acid and polyunsaturated fatty acid profiles improved serum-mediated cholesterol efflux capacity in individuals with or at risk for MetS. This mechanism may account, in part, for the cardiovascular disease benefits of diets low in SFAs and high in unsaturated fatty acids. Importantly, central obesity is inversely associated with cholesterol efflux capacity. This trial was registered at www.clinicaltrials.gov as NCT01351012.
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Affiliation(s)
- Xiaoran Liu
- Departments of Nutritional Sciences, Veterinary and Biomedical Sciences, and Biobehavioral Health, The Pennsylvania State University, University Park, PA
| | - Josephine Garban
- Departments of Veterinary and Biomedical Sciences, and Biobehavioral Health, The Pennsylvania State University, University Park, PA
| | - Peter J Jones
- Richardson Center for Functional Foods and Nutraceuticals, University of Manitoba, Winnipeg, Canada
| | - Jack Vanden Heuvel
- Departments of Veterinary and Biomedical Sciences, and Biobehavioral Health, The Pennsylvania State University, University Park, PA
| | - Benoît Lamarche
- Institute of Nutrition and Functional Foods, Laval University, Québec, Canada
| | - David J Jenkins
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada
| | - Philip W Connelly
- Keenan Research Centre for Biomedical Science of St Michael's Hospital, Toronto, Canada
| | - Patrick Couture
- Institute of Nutrition and Functional Foods, Laval University, Québec, Canada
| | - Shuaihua Pu
- Departments of Veterinary and Biomedical Sciences, and Biobehavioral Health, The Pennsylvania State University, University Park, PA
| | - Jennifer A Fleming
- Departments of Nutritional Sciences, Veterinary and Biomedical Sciences, and Biobehavioral Health, The Pennsylvania State University, University Park, PA
| | - Sheila G West
- Departments of Nutritional Sciences, Veterinary and Biomedical Sciences, and Biobehavioral Health, The Pennsylvania State University, University Park, PA
| | - Penny M Kris-Etherton
- Departments of Nutritional Sciences, Veterinary and Biomedical Sciences, and Biobehavioral Health, The Pennsylvania State University, University Park, PA,Address correspondence to PMK-E (e-mail: )
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14
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Cholesterol Efflux: Does It Contribute to Aortic Stiffening? J Cardiovasc Dev Dis 2018; 5:jcdd5020023. [PMID: 29724005 PMCID: PMC6023341 DOI: 10.3390/jcdd5020023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 04/20/2018] [Accepted: 04/25/2018] [Indexed: 12/12/2022] Open
Abstract
Aortic stiffness during cardiac contraction is defined by the rigidity of the aorta and the elastic resistance to deformation. Recent studies suggest that aortic stiffness may be associated with changes in cholesterol efflux in endothelial cells. This alteration in cholesterol efflux may directly affect endothelial function, extracellular matrix composition, and vascular smooth muscle cell function and behavior. These pathological changes favor an aortic stiffness phenotype. Among all of the proteins participating in the cholesterol efflux process, ATP binding cassette transporter A1 (ABCA1) appears to be the main contributor to arterial stiffness changes in terms of structural and cellular function. ABCA1 is also associated with vascular inflammation mediators implicated in aortic stiffness. The goal of this mini review is to provide a conceptual hypothesis of the recent advancements in the understanding of ABCA1 in cholesterol efflux and its role and association in the development of aortic stiffness, with a particular emphasis on the potential mechanisms and pathways involved.
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15
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Parikh M, Netticadan T, Pierce GN. Flaxseed: its bioactive components and their cardiovascular benefits. Am J Physiol Heart Circ Physiol 2018; 314:H146-H159. [DOI: 10.1152/ajpheart.00400.2017] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Cardiovascular disease remains the leading cause of mortality and morbidity worldwide. The inclusion of functional foods and natural health products in the diet are gaining increasing recognition as integral components of lifestyle changes in the fight against cardiovascular disease. Several preclinical and clinical studies have shown the beneficial cardiovascular effects of dietary supplementation with flaxseed. The cardiovascular effects of dietary flaxseed have included an antihypertensive action, antiatherogenic effects, a lowering of cholesterol, an anti-inflammatory action, and an inhibition of arrhythmias. Its enrichment in the ω-3 fatty acid α-linolenic acid and the antioxidant lignan secoisolariciresinol diglucoside as well as its high fiber content have been implicated primarily in these beneficial cardiovascular actions. Although not as well recognized, flaxseed is also composed of other potential bioactive compounds such as proteins, cyclolinopeptides, and cyanogenic glycosides, which may also produce biological actions. These compounds could also be responsible for the cardiovascular effects of flaxseed. This article will not only summarize the cardiovascular effects of dietary supplementation with flaxseed but also review its bioactive compounds in terms of their properties, biological effects, and proposed mechanisms of action. It will also discuss promising research directions for the future to identify additional health-related benefits of dietary flaxseed.
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Affiliation(s)
- Mihir Parikh
- Department of Physiology and Pathophysiology, Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
- Canadian Centre for Agri-food Research in Health and Medicine, Winnipeg, Manitoba, Canada
- Institute of Cardiovascular Sciences, St. Boniface Hospital, Albrechtsen Research Centre, Winnipeg, Manitoba, Canada
| | - Thomas Netticadan
- Agriculture and Agri-food Canada, Winnipeg, Manitoba, Canada
- Canadian Centre for Agri-food Research in Health and Medicine, Winnipeg, Manitoba, Canada
| | - Grant N. Pierce
- Department of Physiology and Pathophysiology, Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
- Canadian Centre for Agri-food Research in Health and Medicine, Winnipeg, Manitoba, Canada
- Institute of Cardiovascular Sciences, St. Boniface Hospital, Albrechtsen Research Centre, Winnipeg, Manitoba, Canada
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16
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Houston M. Dyslipidemia. Integr Med (Encinitas) 2018. [DOI: 10.1016/b978-0-323-35868-2.00027-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Xue Z, Zhang Q, Yu W, Wen H, Hou X, Li D, Kou X. Potential Lipid-Lowering Mechanisms of Biochanin A. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:3842-3850. [PMID: 28447802 DOI: 10.1021/acs.jafc.7b00967] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Extensive studies have demonstrated that biochanin A (BCA) has a significant hypolipidemic effect. However, its mechanism of action is not clear. In this context, the effect of BCA on a high-fat diet (HFD)-induced hyperlipidemia in mice was determined. The results showed that treatment with a medium dose of biochanin A (BM) significantly decreased low-density lipoprotein cholesterol (LDL-C) 85% (from 1.196 ± 0.183 to 0.181 ± 0.0778 mM) and total cholesterol (TC) 39% (from 5.983 ± 0.128 to 3.649 ± 0.374 mM) levels, increased lipoprotein lipase (LPL) 96% (from 1.421 ± 0.0982 to 2.784 ± 0.177 U/mg protein) and hepatic triglyceride lipase (HTGL) 78% (from 1.614 ± 0.0848 to 2.870 ± 0.0977 U/mg protein) activities, significantly improved fecal lipid levels, and lowered the epididymal fat index in hyperlipidemic mice compared with the HFD control mice (p < 0.05). In vitro, the high antioxidant capacity of BCA was determined by the FRAP assay, ABTS•+ scavenging method, and an ROS assay. In RAW 264.7 macrophages, a dose of 10 μM BCA significantly increased the cholesterol efflux by 18.7% compared with the control cells. Moreover, molecular docking of BCA on cholesterol ester transfer protein (CETP) (Asn24 and Thr27 at the N-terminal; Ala274 and Phe270 at the C-terminal) gave new insights into the role of BCA in preventing cholesterol ester transport.
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Affiliation(s)
- Zhaohui Xue
- School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, China
| | - Qian Zhang
- School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, China
| | - Wancong Yu
- Medical Plant Laboratory, Tianjin Research Center of Agricultural Biotechnology , Tianjin 300381, China
| | - Haichao Wen
- School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, China
| | - Xiaonan Hou
- School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, China
| | - Dan Li
- School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, China
| | - Xiaohong Kou
- School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, China
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18
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Medium-chain triglycerides promote macrophage reverse cholesterol transport and improve atherosclerosis in ApoE-deficient mice fed a high-fat diet. Nutr Res 2016; 36:964-973. [DOI: 10.1016/j.nutres.2016.06.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Revised: 05/24/2016] [Accepted: 06/01/2016] [Indexed: 11/22/2022]
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19
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Zhao S, Li J, Wang L, Wu X. Pomegranate peel polyphenols inhibit lipid accumulation and enhance cholesterol efflux in raw264.7 macrophages. Food Funct 2016; 7:3201-10. [DOI: 10.1039/c6fo00347h] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Pomegranate peel polyphenols hindered ox-LDL-induced raw264.7 foam cell formation, by decreasing CD36 and promoting ABCA1 and LXRα expression.
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Affiliation(s)
- Shengjuan Zhao
- College of Food Engineering and Nutritional Science
- Shaanxi Normal University
- Xi'an 710119
- China
- College of Food & Bioengineering
| | - Jianke Li
- College of Food Engineering and Nutritional Science
- Shaanxi Normal University
- Xi'an 710119
- China
- University Key Laboratory of Food Processing Byproducts for Advanced Development and High Value Utilization
| | - Lifang Wang
- College of Food Engineering and Nutritional Science
- Shaanxi Normal University
- Xi'an 710119
- China
| | - Xiaoxia Wu
- College of Food Engineering and Nutritional Science
- Shaanxi Normal University
- Xi'an 710119
- China
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20
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Dobrzyn P, Bednarski T, Dobrzyn A. Metabolic reprogramming of the heart through stearoyl-CoA desaturase. Prog Lipid Res 2015; 57:1-12. [DOI: 10.1016/j.plipres.2014.11.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 11/25/2014] [Accepted: 11/25/2014] [Indexed: 02/06/2023]
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21
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Camargo A, Meneses ME, Pérez-Martínez P, Delgado-Lista J, Rangel-Zúñiga OA, Marín C, Almadén Y, Yubero-Serrano EM, González-Guardia L, Fuentes F, Tinahones FJ, Roche HM, Malagón MM, Pérez-Jiménez F, López-Miranda J. Dietary fat modifies lipid metabolism in the adipose tissue of metabolic syndrome patients. GENES AND NUTRITION 2014; 9:409. [PMID: 24895107 DOI: 10.1007/s12263-014-0409-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Accepted: 05/13/2014] [Indexed: 10/25/2022]
Abstract
Adipose tissue (AT) is a key organ in the regulation of total body lipid homeostasis, which is responsible for the storage and release of fatty acids according to metabolic needs. We aimed to investigate the effect of the quantity and quality of dietary fat on the lipogenesis and lipolysis processes in the AT of metabolic syndrome (MetS) patients. A randomized, controlled trial conducted within the LIPGENE study assigned MetS patients to one of four diets: (a) high-saturated fatty acid (HSFA) (b) high-monounsaturated fatty acid, and (c, d) two low-fat, high-complex carbohydrate diets supplemented with long chain (LC) n-3 (LFHCC n-3) polyunsaturated fatty acids (PUFA) or placebo (LFHCC), for 12 weeks each. A fat challenge reflecting the same fatty acid composition as the original diets was conducted post-intervention. Long-term consumption of the LFHCC diet induced an increase in the fasting expression levels of the sterol regulatory element binding protein-1 and stearoyl-CoA desaturase D9-desaturase genes, whereas the supplementation of this diet with n-3 PUFA reversed this effect (p = 0.007). In contrast, long-term consumption of the HSFA diet increased the expression of the adipose triglyceride lipase (ATGL) gene, at both fasting and postprandial states (both, p < 0.001). Our results showed the anti-lipogenic effect exerted by LC n-3 PUFA when administered together with a LFHCC diet. Conversely, a diet high in saturated fat increased the expression of the lipolytic gene ATGL relative to the other diets.
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Affiliation(s)
- Antonio Camargo
- Lipids and Atherosclerosis Unit, IMIBIC/Reina Sofia University Hospital, University of Cordoba, Avda. Menendez Pidal, s/n., 14004, Córdoba, Spain
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22
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Kim KB, Nam YA, Kim HS, Hayes AW, Lee BM. α-Linolenic acid: nutraceutical, pharmacological and toxicological evaluation. Food Chem Toxicol 2014; 70:163-78. [PMID: 24859185 DOI: 10.1016/j.fct.2014.05.009] [Citation(s) in RCA: 159] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 05/08/2014] [Accepted: 05/13/2014] [Indexed: 12/11/2022]
Abstract
α-Linolenic acid (ALA), a carboxylic acid with 18 carbons and three cis double bonds, is an essential fatty acid needed for human health and can be acquired via regular dietary intake of foods that contain ALA or dietary supplementation of foods high in ALA, for example flaxseed. ALA has been reported to have cardiovascular-protective, anti-cancer, neuro-protective, anti-osteoporotic, anti-inflammatory, and antioxidative effects. ALA is the precursor of longer chain omega-3 fatty acids, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), but its beneficial effects on risk factors for cardiovascular diseases are still inconclusive. The recommended intake of ALA for cardiovascular health is reported to be 1.1-2.2g/day. Although there are limited toxicological data for ALA, no serious adverse effects have been reported. The evidence on an increased prostate cancer risk in association with dietary ALA is not conclusive. Based on the limited data currently available, it may be concluded that ALA may be beneficial as a nutraceutical/pharmaceutical candidate and is safe for use as a food ingredient.
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Affiliation(s)
- Kyu-Bong Kim
- College of Pharmacy, Dankook University, 119 Dandae-ro, Cheonan, Chungnam 330-714, Republic of Korea
| | - Yoon A Nam
- Division of Toxicology, College of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Republic of Korea
| | - Hyung Sik Kim
- Division of Toxicology, College of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Republic of Korea
| | - A Wallace Hayes
- Harvard School of Public Health, 665 Huntington Ave, Boston, MA 02115, USA
| | - Byung-Mu Lee
- Division of Toxicology, College of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Republic of Korea.
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23
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Andersen CJ, Fernandez ML. Dietary approaches to improving atheroprotective HDL functions. Food Funct 2014; 4:1304-13. [PMID: 23921436 DOI: 10.1039/c3fo60207a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
High-density lipoproteins (HDL) are known to protect against cardiovascular disease (CVD). In addition to facilitating reverse cholesterol transport to remove excess lipids from the body - including atherosclerotic plaques - HDL exhibits antioxidant, anti-inflammatory, vasodilatory, and antithrombotic activities. Together, these properties contribute to the overall atheroprotective nature of HDL. However, similar to many other physiological pathways, these HDL parameters are known to become dysregulated in conditions of metabolic disease. Further, research suggests these alternative HDL properties may be regulated independently of blood HDL-cholesterol (HDL-C) levels, and must therefore be considered when designing HDL-targeted therapies. To date, a number of dietary strategies have been investigated to assess the effect of dietary components on functional properties of HDL beyond HDL-C. This review will highlight the bioactive nutrients, functional foods, and dietary programs known to modulate HDL function as a means of reducing CVD.
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Affiliation(s)
- Catherine J Andersen
- Department of Nutritional Sciences, University of Connecticut, 3624 Horsebarn Road Ext., Unit 4017, Storrs, CT 06269-4017, USA
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24
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Kris-Etherton PM. Walnuts decrease risk of cardiovascular disease: a summary of efficacy and biologic mechanisms. J Nutr 2014; 144:547S-554S. [PMID: 24500935 DOI: 10.3945/jn.113.182907] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Given the pressing need to reduce cardiovascular disease (CVD) morbidity and mortality, there has been a focus on optimizing dietary patterns to reduce the many contributing risk factors. Over the past 2 decades, many studies have been conducted that have evaluated the effects of walnut consumption on CVD risk factors. Walnuts have been shown to decrease low density lipoprotein cholesterol (by ∼9-16%) and blood pressure (diastolic blood pressure by ∼2-3 mm Hg), 2 major risk factors for CVD. In addition, walnuts improve endothelial function, decrease both oxidative stress and some markers of inflammation, and increase cholesterol efflux. The effect of walnuts on multiple CVD targets over relatively short periods of time supports recommendations for their inclusion in a heart-healthy diet.
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Affiliation(s)
- Penny M Kris-Etherton
- Department of Nutritional Sciences, Pennsylvania State University, University Park, PA
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Afonso MDS, Castilho G, Lavrador MSF, Passarelli M, Nakandakare ER, Lottenberg SA, Lottenberg AM. The impact of dietary fatty acids on macrophage cholesterol homeostasis. J Nutr Biochem 2014; 25:95-103. [DOI: 10.1016/j.jnutbio.2013.10.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Revised: 09/11/2013] [Accepted: 10/03/2013] [Indexed: 11/16/2022]
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Vanden Heuvel JP. Comment on "associations between PFOA, PFOS and changes in the expression of genes involved in cholesterol metabolism in humans" by Fletcher et al., Environment International 57-58 (2013) 2-10. ENVIRONMENT INTERNATIONAL 2013; 61:150-153. [PMID: 24084472 DOI: 10.1016/j.envint.2013.09.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Accepted: 09/04/2013] [Indexed: 06/02/2023]
Affiliation(s)
- John P Vanden Heuvel
- Department of Veterinary and Biomedical Sciences, Penn State University, 325 Life Sciences Building University Park, PA 16802, United States; INDIGO Biosciences, Inc., State College PA 16801, United States.
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Zavar Reza J, Nahangi H, Mansouri R, Dehghani A, Mojarrad M, Fathi M, Nikzamir A, Yekaninejad MS. The Effect of Unsaturated Fatty Acids on Molecular Markers of Cholesterol Homeostasis in THP-1 Macrophages. IRANIAN RED CRESCENT MEDICAL JOURNAL 2013; 15:554-9. [PMID: 24396573 PMCID: PMC3871741 DOI: 10.5812/ircmj.11780] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 05/20/2013] [Accepted: 05/25/2013] [Indexed: 01/22/2023]
Abstract
Background Macrophages derived foam cells are key factors in the maladaptive immune and inflammatory response. Objectives The study of the cholesterol homeostasis and the molecular factor involved in these cells is very important in understanding the process of atherosclerosis and the mechanisms that prevent its occurrence. Materials and Methods This experimental study investigated the effects of c9, t11-Conjugated Linoleic Acid (c9, t11-CLA). Alpha Linolenic Acid (LA), and Eicosapentaenoic Acid (EPA) on the PPARα and ACAT1 mRNA expression by Real time PCR and cholesterol homeostasis in THP-1 macrophages derived foam cells. Results Incubation of CLA, LA, EPA, and synthetic ligands did not prevent increasing the cellular total cholesterol (TC). Free cholesterol (FC) is increased by Sandoz58-035 (P = 0.024) and decreased by fatty acids and Wy14643 (Pirinixic acid) (P = 0.035). The pattern of distribution of %EC is similar to the EC pattern distribution. The ACAT1 mRNA expression was significantly increased by EPA (P = 0.009), but c9, t11- CLA, LA, Wy14643, and Sandoz58-035 had no significant effect on the mRNA level of ACAT1 expression compared to DMSO(Dimethyl sulfoxide). Discussions In comparison to the control of Wy14643, Sandoz58-035, c9 and t11-CLA, EPA increased the PPARα mRNA levels (P = 0.024, P = 0.041, P = 0.043, and P = 0.004, respectively), even though, LA had no significant effect on the PPARα mRNA expression (P = 0.489). Conclusions Variations in the chemical structure of fatty acids can affect their physiological function.
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Affiliation(s)
- Javad Zavar Reza
- Department of Biochemistry, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, IR Iran
| | - Hossein Nahangi
- Department of Anatomy, Faculty of Medicine, Shahid Sadoughi University of Medical, Yazd, IR Iran
| | - Reza Mansouri
- Department of Immunology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, IR Iran
| | - Ali Dehghani
- Department of Biostatistics and Epidemiology, Faculty of Health, Shahid Sadoughi University of Medical Sciences, Yazd, IR Iran
| | - Majid Mojarrad
- Department of Medical Genetics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, IR Iran
| | - Mohammad Fathi
- Department of Anesthesiology, Faculty of Medicine, Mofid Children’s Hospital, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran
- Corresponding author: Mohammad Fathi, Department of Anesthesiology, Faculty of Medicine, Mofid Children’s Hospital, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran. Tel: +98-2181453074, Fax: +98-2181453074, E-mail:
| | - Abdolrahim Nikzamir
- Endocrine Research Center, Valiasr Hospital, Tehran University of Medical Sciences, Tehran, IR Iran
| | - Mir Saeed Yekaninejad
- Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, IR Iran
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Berryman CE, Grieger JA, West SG, Chen CYO, Blumberg JB, Rothblat GH, Sankaranarayanan S, Kris-Etherton PM. Acute consumption of walnuts and walnut components differentially affect postprandial lipemia, endothelial function, oxidative stress, and cholesterol efflux in humans with mild hypercholesterolemia. J Nutr 2013; 143:788-94. [PMID: 23616506 PMCID: PMC3652880 DOI: 10.3945/jn.112.170993] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Walnut consumption improves cardiovascular disease risk; however, to our knowledge, the contribution of individual walnut components has not been assessed. This study evaluated the acute consumption of whole walnuts (85 g), separated nut skins (5.6 g), de-fatted nutmeat (34 g), and nut oil (51 g) on postprandial lipemia, endothelial function, and oxidative stress. Cholesterol efflux (ex vivo) was assessed in the whole walnut treatment only. A randomized, 4-period, crossover trial was conducted in healthy overweight and obese adults (n = 15) with moderate hypercholesterolemia. There was a treatment × time point interaction for triglycerides (P < 0.01) and increased postprandial concentrations were observed for the oil and whole walnut treatments (P < 0.01). Walnut skins decreased the reactive hyperemia index (RHI) compared with baseline (P = 0.02) such that a difference persisted between the skin and oil treatments (P = 0.01). The Framingham RHI was maintained with the oil treatment compared with the skins and whole nut (P < 0.05). There was a treatment effect for the ferric reducing antioxidant potential (FRAP) (P < 0.01), and mean FRAP was greater with the oil and skin treatments compared with the nutmeat (P < 0.01). Cholesterol efflux increased by 3.3% following whole walnut consumption in J774 cells cultured with postprandial serum compared with fasting baseline (P = 0.02). Walnut oil favorably affected endothelial function and whole walnuts increased cholesterol efflux. These 2 novel mechanisms may explain in part the cardiovascular benefits of walnuts.
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Affiliation(s)
| | | | - Sheila G. West
- Department of Nutritional Sciences, and,Department of Biobehavioral Health, The Pennsylvania State University, University Park, PA
| | - Chung-Yen O. Chen
- Jean Mayer USDA Human Nutrition Research Center on Aging, Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA; and
| | - Jeffrey B. Blumberg
- Jean Mayer USDA Human Nutrition Research Center on Aging, Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA; and
| | - George H. Rothblat
- Department of Pediatrics, The Children’s Hospital of Philadelphia, Philadelphia, PA
| | | | - Penny M. Kris-Etherton
- Department of Nutritional Sciences, and,To whom correspondence should be addressed. E-mail:
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Francis AA, Deniset JF, Austria JA, LaValleé RK, Maddaford GG, Hedley TE, Dibrov E, Pierce GN. Effects of dietary flaxseed on atherosclerotic plaque regression. Am J Physiol Heart Circ Physiol 2013; 304:H1743-51. [PMID: 23585134 DOI: 10.1152/ajpheart.00606.2012] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Dietary flaxseed can retard the progression of atherosclerotic plaques. However, it remains unclear whether these antiatherogenic effects extend to plaque regression. In the present study, the therapeutic potential of dietary flaxseed on atherosclerotic plaque regression and vascular contractile function was evaluated using a novel rabbit model. Rabbits were randomly assigned to receive either a regular diet for 12 wk (group I) or a 1% cholesterol-supplemented diet for 4 wk followed by a regular diet for 8 wk (group II). The remaining experimental animals were treated as in group II but were fed for an additional 14 wk with either a regular diet (group III) or a 10% flaxseed-supplemented diet (group IV). Animals in group II showed clear evidence of plaque growth stabilization. Their vessels also exhibited significantly lower norepinephrine-induced contraction and an impaired relaxation response to acetylcholine compared with animals in group I. Dietary flaxseed supplementation resulted in a significant ≈40% reduction in plaque formation (P = 0.033). Animals in both groups II and III displayed improved contraction and endothelium-dependent vessel relaxation. Dietary flaxseed is a valuable strategy to accelerate the regression of atherosclerotic plaques; however, flaxseed intervention did not demonstrate a clear beneficial effect on the vessel contractile response and endothelium-dependent vasorelaxation.
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Affiliation(s)
- Andrew A Francis
- Canadian Centre for Agri-food Research in Health and Medicine and the Institute of Cardiovascular Sciences, St. Boniface Hospital Research Centre, Department of Physiology, Faculties of Medicine and Pharmacy, University of Manitoba, Winnipeg, Manitoba, Canada
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Kim MJ, Lee KJ, Hwang JY, Lee HS, Chio SH, Lim S, Jang HC, Park YJ. Loss of small heterodimer partner protects against atherosclerosis in apolipoprotein E-deficient mice. Endocr J 2013; 60:1171-7. [PMID: 23912975 DOI: 10.1507/endocrj.ej13-0212] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Small heterodimer partner (SHP) is involved in bile, lipid, and glucose metabolism. The aim of this study was to investigate the effect of SHP on the development of atherosclerosis. Apolipoprotein E knockout (ApoE-/-) mice were crossed with SHP knockout (SHP-/-) mice to generate double knockout (ApoE-/-SHP-/-) mice. ApoE-/- and ApoE-/-SHP-/- male mice were fed a western diet for 20 weeks. Body weight in ApoE-/-SHP-/) mice was significantly lower than that in ApoE-/- mice (37±1 g vs. 42±1 g, p<0.01). Loss of SHP in ApoE-/- mice decreased the size of adipocytes in white adipose tissue and reduced lipid accumulation in the liver. Glucose intolerance was improved in ApoE-/-SHP-/- mice as compared with ApoE-/- mice (p<0.01). There was no statistical difference in non-high density lipoprotein cholesterol levels between ApoE-/-SHP-/- mice and ApoE-/- mice despite an increase of cholesterol 7α-hydroxylase expression in the liver. The proportion of atherosclerotic lesions in the aorta was significantly lower in ApoE-/-SHP-/- mice than in ApoE-/- mice (2.8±2.0% vs. 9.1±1.9%, p<0.01). In conclusion, loss of SHP function can prevent atherosclerosis, and resistance to diet-induced obesity is the primary factor contributing to this protective effect.
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Affiliation(s)
- Min Joo Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul 110-744, Republic of Korea
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Gillies PJ, Bhatia SK, Belcher LA, Hannon DB, Thompson JT, Vanden Heuvel JP. Regulation of inflammatory and lipid metabolism genes by eicosapentaenoic acid-rich oil. J Lipid Res 2012; 53:1679-89. [PMID: 22556214 DOI: 10.1194/jlr.m022657] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Omega-3-PUFAs, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA), are associated with prevention of various aspects of metabolic syndrome. In the present studies, the effects of oil rich in EPA on gene expression and activation of nuclear receptors was examined and compared with other ω3-PUFAs. The EPA-rich oil (EO) altered the expression of FA metabolism genes in THP-1 cells, including stearoyl CoA desaturase (SCD) and FA desaturase-1 and -2 (FASDS1 and -2). Other ω3-PUFAs resulted in a similar gene expression response for a subset of genes involved in lipid metabolism and inflammation. In reporter assays, EO activated human peroxisome proliferator-activated receptor α (PPARα) and PPARβ/γ with minimal effects on PPARγ, liver X receptor, retinoid X receptor, farnesoid X receptor, and retinoid acid receptor γ (RARγ); these effects were similar to that observed for purified EPA. When serum from a 6 week clinical intervention with dietary supplements containing olive oil (control), DHA, or two levels of EPA were applied to THP-1 cells, the expression of SCD and FADS2 decreased in the cells treated with serum from the ω3-PUFA-supplemented individuals. Taken together, these studies indicate regulation of gene expression by EO that is consistent with treating aspects of dyslipidemia and inflammation.
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Affiliation(s)
- Peter J Gillies
- Central Research and Development, DuPont Experimental Station, E328/140B, Wilmington, DE 19880, USA
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Zhang J, Grieger JA, Kris-Etherton PM, Thompson JT, Gillies PJ, Fleming JA, Vanden Heuvel JP. Walnut oil increases cholesterol efflux through inhibition of stearoyl CoA desaturase 1 in THP-1 macrophage-derived foam cells. Nutr Metab (Lond) 2011; 8:61. [PMID: 21871057 PMCID: PMC3180353 DOI: 10.1186/1743-7075-8-61] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Accepted: 08/26/2011] [Indexed: 12/04/2022] Open
Abstract
Background Walnuts significantly decrease total and low-density lipoprotein cholesterol in normo- and hypercholesterolemic individuals. No study to date has evaluated the effects of walnuts on cholesterol efflux, the initial step in reverse cholesterol transport, in macrophage-derived foam cells (MDFC). The present study was conducted to investigate the mechanisms by which walnut oil affects cholesterol efflux. Methods The extract of English walnuts (walnut oil) was dissolved in DMSO and applied to cultured THP-1 MDFC cells (0.5 mg/mL). THP-1 MDFC also were treated with human sera (10%, v:v) taken from subjects in a walnut feeding study. Cholesterol efflux was examined by liquid scintillation counting. Changes in gene expression were quantified by real time PCR. Results Walnut oil treatment significantly increased cholesterol efflux through decreasing the expression of the lipogenic enzyme stearoyl CoA desaturase 1 (SCD1) in MDFC. Alpha-linolenic acid (ALA), the major n-3 polyunsaturated fatty acids found in walnuts, recaptured SCD1 reduction in MDFC, a mechanism mediated through activation of nuclear receptor farnesoid-X-receptor (FXR). Postprandial serum treatment also increased cholesterol efflux in MDFC. When categorized by baseline C-reactive protein (CRP; cut point of 2 mg/L), subjects in the lower CRP sub-group benefited more from dietary intervention, including a more increase in cholesterol efflux, a greater reduction in SCD1, and a blunted postprandial lipemia. Conclusion In conclusion, walnut oil contains bioactive molecules that significantly improve cholesterol efflux in MDFC. However, the beneficial effects of walnut intake may be reduced by the presence of a pro-inflammatory state. Trial Registration ClinicalTrials.gov: NCT00938340
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Affiliation(s)
- Jun Zhang
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, 16802, USA.
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