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Kindernay L, Ferenczyová K, Farkašová V, Duľová U, Strapec J, Barteková M. Beneficial Effects of Polyphenol-Rich Food Oils in Cardiovascular Health and Disease. Rev Cardiovasc Med 2023; 24:190. [PMID: 39077008 PMCID: PMC11266476 DOI: 10.31083/j.rcm2407190] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 03/09/2023] [Accepted: 03/13/2023] [Indexed: 07/31/2024] Open
Abstract
A variety of vegetable and fruit derived food oils are considered beneficial for human health due to their content of functional components including their positive effects in cardiovascular system. In addition to the favorable ratio of unsaturated versus saturated fatty acids, some of these oils include also other health beneficial compounds such as vitamins, minerals, pigments, enzymes and phenolic compounds. Particularly polyphenols have been documented to exert numerous positive effects in cardiovascular system including their anti-hypertensive, anti-atherogenic as well as cardio- and vasculo- protective effects in subjects suffering from various cardiovascular and cardiometabolic diseases, likely via their antioxidant, anti-inflammatory, anti-coagulant, anti-proliferative and anti-diabetic properties. However, it has not been proven so far whether the positive cardiovascular effects of polyphenol-rich food oils are, and to what measure, attributed to their phenolic content. Thus, the current review aims to summarize the main cardiovascular effects of major polyphenol-rich food oils including olive, flaxseed, soybean, sesame and coconut oils, and to uncover the role of their phenolic compounds in these effects.
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Affiliation(s)
- Lucia Kindernay
- Institute for Heart Research, Centre of Experimental Medicine, Slovak
Academy of Sciences, 84104 Bratislava, Slovakia
| | - Kristína Ferenczyová
- Institute for Heart Research, Centre of Experimental Medicine, Slovak
Academy of Sciences, 84104 Bratislava, Slovakia
| | - Veronika Farkašová
- Institute for Heart Research, Centre of Experimental Medicine, Slovak
Academy of Sciences, 84104 Bratislava, Slovakia
| | - Ulrika Duľová
- Institute for Heart Research, Centre of Experimental Medicine, Slovak
Academy of Sciences, 84104 Bratislava, Slovakia
| | - Jakub Strapec
- Institute for Heart Research, Centre of Experimental Medicine, Slovak
Academy of Sciences, 84104 Bratislava, Slovakia
| | - Monika Barteková
- Institute for Heart Research, Centre of Experimental Medicine, Slovak
Academy of Sciences, 84104 Bratislava, Slovakia
- Institute of Physiology, Faculty of Medicine, Comenius University in
Bratislava, 81372 Bratislava, Slovakia
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Mueed A, Deng Z, Korma SA, Shibli S, Jahangir M. Anticancer potential of flaxseed lignans, their metabolites and synthetic counterparts in relation with molecular targets: current challenges and future perspectives. Food Funct 2023; 14:2286-2303. [PMID: 36820797 DOI: 10.1039/d2fo02208g] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Lignans are known dietary polyphenols found in cereals, plants and seeds. Flaxseed is one of the major sources of lignans mainly existing in the form of secoisolariciresinol diglucoside (SDG) which can be metabolised by the gut microbes into secoisolariciresinol (SECO) and mammalian lignan (enterodiol and enterolactone) that are easily absorbed through the intestines. Numerous studies reveal that flaxseed lignans (FLs) can be promising chemotherapeutics/chemopreventive agents. Their anticancer activity can occur through the induction of apoptosis, inhibition of cell proliferation, and the hindering of metastasis and angiogenesis. The anti-carcinogenesis of flaxseed lignans is achieved through multiple molecular mechanisms involving biochemical entities such as cellular kinases, cell cycle mediators, transcription factors, inflammatory cytokines, reactive oxygen species, and drug transporters. This review summarizes the bioavailability of FLs, their anticancer mechanisms in relevance to molecular targets, safety, and the scope of future research. Overall, FLs can be utilized in functional foods, dietary supplements, and pharmaceuticals for the management and prevention of cancers.
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Affiliation(s)
- Abdul Mueed
- State key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China.
| | - Zeyuan Deng
- State key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China.
| | - Sameh A Korma
- Department of Food Science, Faculty of Agriculture, Zagazig University, 44519 Zagazig, Egypt
| | - Sahar Shibli
- Food Science Research Institute, National Agriculture Research Center, Islamabad, Pakistan
| | - Muhammad Jahangir
- Department of Food Science & Technology, The University of Haripur, Khyber-Pakhtunkhwa, Pakistan
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3
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The Effect and Mechanism of Syringa pinnatifolia Hemsl. Ligans on Cerebral Ischemia-Reperfusion Injury and Oxidative Stress in Mice. Neurochem Res 2023; 48:1822-1834. [PMID: 36723726 DOI: 10.1007/s11064-022-03855-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 12/16/2022] [Accepted: 12/27/2022] [Indexed: 02/02/2023]
Abstract
Lignans are the main components of Syringa pinnatifolia Hemsl. (SP). Previous studies have shown that SP lignans (SPL) can considerably improve CCl4-induced acute liver injury in mice by the anti-oxidative stress (OS) mechanism. In this study, we investigated the antioxidant effects of SPL on cerebral ischemia/reperfusion injury (CIRI) and its underlying molecular mechanism. We developed a middle cerebral artery occlusion/reperfusion (MCAO/R) model in mice to achieve CIRI and orally administered SPL daily for 1-3 days. We evaluated neurological function deficits and performed hematoxylin and eosin staining. We further calculated the infarct volume. Malondialdehyde (MDA), superoxide dismutase (SOD), and glutathione peroxidase (GPx) in the brain were detected using corresponding kits. The transcription and protein levels of nuclear factor erythroid 2-related factor 2 (Nrf2), heme oxygenase 1 (HO-1), and NAD(P)H quinone dehydrogenase 1 (NQO1) in brain tissues were analyzed by real-time reverse transcription polymerase chain reaction and western blotting, respectively. The results showed that SPL could remarkably ameliorate neurological functions and pathological damage in brain tissues, reducing the cerebral infarct volume. It also increased the SOD and GPx activities decreased the MDA levels as well as inhibited the expression of (NOX)2 and NOX4. We also found that the mRNA and protein levels of Nrf2, HO-1, and NQO1 in the CIRI mice increased transiently and peaked at 24 h of reperfusion, and then began to decline. SPL could reverse decreasing Nrf2 and HO-1 levels after 24 h. In conclusion, SPL can alleviate CIRI and OS by activating the Nrf2/HO-1 pathway.
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Tse TJ, Guo Y, Shim YY, Purdy SK, Kim JH, Cho JY, Alcorn J, Reaney MJT. Availability of bioactive flax lignan from foods and supplements. Crit Rev Food Sci Nutr 2022; 63:9843-9858. [PMID: 35532015 DOI: 10.1080/10408398.2022.2072807] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Hyperlipidemia, high levels of blood lipids including cholesterol and triglycerides, is a major risk factor for cardiovascular disease. Traditional treatments of hyperlipidemia often include lifestyle changes and pharmacotherapy. Recently, flaxseed has been approved as a nutrient that lowers blood lipids. Several metabolites of flaxseed lignan secoisolariciresinol diglucoside (SDG), have been identified that reduce blood lipids. SDG is present in flaxseed hull as an ester-linked copolymer with 3-hydroxy-3-methylglutaric acid (HMGA). However, purification processes involved in hydrolysis of the copolymer and enriching SDG are often expensive. The natural copolymer of SDG with HMGA (SDG polymer) is a source of bioactive compounds useful in prophylaxis of hypercholesterolemia. After consumption of the lignan copolymer, SDG and HMGA are released in the stomach and small intestines. SDG is metabolized to secoisolariciresinol, enterolactone and enterodiol, the bioactive forms of mammalian lignans. These metabolites are then distributed throughout the body where they accumulate in the liver, kidney, skin, other tissues, and organs. Successively, these metabolites reduce blood lipids including cholesterol, triglycerides, low density lipoprotein cholesterol, and lipid peroxidation products. In this review, the metabolism and efficacies of flaxseed-derived enriched SDG and SDG polymer will be discussed.
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Affiliation(s)
- Timothy J Tse
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Yajia Guo
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Youn Young Shim
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
- Prairie Tide Diversified Inc., Saskatoon, Saskatchewan, Canada
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, Korea
| | - Sarah K Purdy
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Ji Hye Kim
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, Korea
| | - Jae Youl Cho
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, Korea
| | - Jane Alcorn
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Martin J T Reaney
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
- Prairie Tide Diversified Inc., Saskatoon, Saskatchewan, Canada
- Guangdong Saskatchewan Oilseed Joint Laboratory, Department of Food Science and Engineering, Jinan University, Guangdong, China
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Guo Y, Yang X, Tse TJ, Purdy SK, Mustafa R, Shen J, Alcorn J, Reaney MJT. Hypocholesterolemic Efficacy of Secoisolariciresinol Diglucoside and Its Polymer in Rat. JOURNAL OF NATURAL PRODUCTS 2021; 84:2845-2850. [PMID: 34699206 DOI: 10.1021/acs.jnatprod.1c00549] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Hypercholesterolemia is a risk factor for cardiovascular disease. Conventional treatment methods include lifestyle changes and pharmaceutical interventions, but recently Health Canada approved a health claim for whole ground flaxseed as an alternative treatment for hypercholesterolemia. The literature suggests flaxseed lignans are responsible for the cholesterol-reducing effects of flaxseed. In this study, 96.1% secoisolariciresinol diglucoside (SDG) and a 50% SDG enriched polymer (SDG polymer) were investigated as treatments for hypercholesterolemia in rats. Wistar female rats were fed a 1% high-cholesterol diet for a one-week acclimatization prior to a 23-day intervention with enriched SDG or SDG polymer. A reduction in body weight normalized liver weight was observed in rats treated with enriched SDG when compared to the controls. Both enriched SDG (96.1%) and SDG polymer reduced serum triacylglycerol (19% and 15%, respectively) and increased high-density lipoprotein cholesterol (15% and 24%, respectively). Histopathologic analyses revealed lipid-lowering effects of either enriched SDG or SDG polymer along with lower steatosis scores and nonalcoholic fatty liver disease activity. Furthermore, the lack of statistical significance between SDG and SDG polymer treatment groups suggests that SDG polymer may be a potential alternative to enriched SDG for hypercholesterolemia with similar efficacy but lower cost.
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Affiliation(s)
- Yajia Guo
- Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada
- College of Pharmacy and Nutrition, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK S7N 5E5, Canada
| | - Xiaolei Yang
- College of Pharmacy and Nutrition, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK S7N 5E5, Canada
| | - Timothy J Tse
- Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada
| | - Sarah K Purdy
- Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada
| | - Rana Mustafa
- Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada
| | - Jianheng Shen
- Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada
| | - Jane Alcorn
- College of Pharmacy and Nutrition, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK S7N 5E5, Canada
| | - Martin J T Reaney
- Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada
- Prairie Tide Diversified Inc., 102 Melville Street, Saskatoon, SK S7J 0R1, Canada
- Guangdong Saskatchewan Oilseed Joint Laboratory, Department of Food Science and Engineering, Jinan University, 601 Huangpu Avenue West, Guangzhou, Guangdong 510632, China
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Prasad K. Current Status of Primary, Secondary, and Tertiary Prevention of Coronary Artery Disease. Int J Angiol 2021; 30:177-186. [PMID: 34776817 PMCID: PMC8580611 DOI: 10.1055/s-0041-1731273] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
Fifty percent of all death from cardiovascular diseases is due to coronary artery disease (CAD). This is avoidable if early identification is made. Preventive health care has a major role in the fight against CAD. Atherosclerosis and atherosclerotic plaque rupture are involved in the development of CAD. Modifiable risk factors for CAD are dyslipidemia, diabetes, hypertension, cigarette smoking, obesity, chronic renal disease, chronic infection, high C-reactive protein, and hyperhomocysteinemia. CAD can be prevented by modification of risk factors. This paper defines the primary, secondary, and tertiary prevention of CAD. It discusses the mechanism of risk factor-induced atherosclerosis. This paper describes the CAD risk score and its use in the selection of individuals for primary prevention of CAD. Guidelines for primary, secondary, and tertiary prevention of CAD have been described. Modification of risk factors and use of guidelines for prevention of CAD would prevent, regress, and slow down the progression of CAD, improve the quality of life of patient, and reduce the health care cost.
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Affiliation(s)
- Kailash Prasad
- Department of Physiology (APP), College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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Polyphenols in foods: Classification, methods of identification, and nutritional aspects in human health. ADVANCES IN FOOD AND NUTRITION RESEARCH 2021; 98:1-33. [PMID: 34507639 DOI: 10.1016/bs.afnr.2021.02.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Polyphenols widely exists in various foods, including main crops, fruits, beverages and some wines. Famous representatives of polyphenols, such as resveratrol in red wine, (-)-epigallocatechin gallate in green tea, chlorogenic acid in coffee, anthocyanins in colored fruits, procyanidins in grape seed have become hot research topics in food science and nutrition. There have been thousands of papers on the biochemistry, chemistry, nutritional values and population-based investigations of dietary polyphenols. In this chapter, we reviewed the published articles and database of dietary polyphenols to draw a profile for the classification, structural identification, and biological activities mainly based on enzymes, cell bioassay and animal models, as well as the population-based investigation results. The typical compound and its health benefits for each category of polyphenols was also introduced. The identification of dietary polyphenols could be solved by combined spectroscopy methods, of which the liquid chromatography tandem mass spectrometry is highlighted to greatly increase the efficiency on structural identification. Although the population-based investigation showed some controversial results for health benefits, the multi-functions of dietary polyphenols on preventing metabolic syndromes, various cancers and neurodegenerative disease have attracted much attention.
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Protective Role of Polyphenols in Heart Failure: Molecular Targets and Cellular Mechanisms Underlying Their Therapeutic Potential. Int J Mol Sci 2021; 22:ijms22041668. [PMID: 33562294 PMCID: PMC7914665 DOI: 10.3390/ijms22041668] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 02/01/2021] [Accepted: 02/04/2021] [Indexed: 12/11/2022] Open
Abstract
Heart failure (HF) is a leading cause of death in the United States, with a 5-year mortality rate of 50% despite modern pharmacological therapies. Plant-based diets are comprised of a diverse polyphenol profile, which lends to their association with reduced cardiovascular disease risk. Whether a polyphenol-rich diet can slow the progression of or reverse HF in humans is not known. To date, in vitro and in vivo studies have reported on the protective role of polyphenols in HF. In this review, we will discuss the major mechanisms by which polyphenols mitigate HF in vitro and in vivo, including (1) reduced cardiac inflammation and oxidative stress, (2) reduced mitochondrial dysfunction, (3) improved Ca2+ homeostasis, (4) increased survival signaling, and (5) increased sirtuin 1 activity.
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Chhillar H, Chopra P, Ashfaq MA. Lignans from linseed ( Linum usitatissimum L.) and its allied species: Retrospect, introspect and prospect. Crit Rev Food Sci Nutr 2020; 61:2719-2741. [PMID: 32619358 DOI: 10.1080/10408398.2020.1784840] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Lignans are complex diphenolic compounds representing phytoestrogens and occur widely across the plant kingdom. Formed by the coupling of two coniferyl alcohol residues, lignans constitute major plant "specialized metabolites" with exceptional biological attributes that aid in plant defence and provide health benefits in humans by reducing the risk of ailments such as cancer, diabetes etc. Linseed (Linum usitatissimum L.) is one of the richest sources of lignans followed by cereals and legumes. Among the various types of lignans, secoisolariciresinol diglucoside (SDG) is considered as the essential and nutrient rich lignan in linseed. Lignans exhibit established antimitotic, antiviral and anti-tumor properties that contribute to their medicinal value. The present review seeks to provide a holistic view of research in the past and present times revolving around lignans from linseed and its allied species. This review attempts to elucidate sources, structures and functional properties of lignans, along with detailed biosynthetic mechanisms operating in plants. It summarizes various methods for the determination of lignan content in plants. Biotechnological interventions (in planta and in vitro) aimed at enriching lignan content and adoption of integrative approaches that might further enhance lignan content and medicinal and nutraceutical value of Linum spp. have also been discussed.
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Affiliation(s)
- Himanshu Chhillar
- Department of Botany, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, India
| | - Priyanka Chopra
- Department of Botany, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, India
| | - Mohd Ashraf Ashfaq
- Department of Botany, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, India
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Prasad K, Khan AS, Shoker M. Flaxseed and Its Components in Treatment of Hyperlipidemia and Cardiovascular Disease. Int J Angiol 2020; 29:216-222. [PMID: 33268971 DOI: 10.1055/s-0040-1709129] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
This paper describes the effects of flaxseed and its components (flax oil, secoisolariciresinoldiglucoside[SDG], flax lignan complex [FLC], and flax fibers] on serum lipids (total cholesterol [TC], low-density lipoprotein-cholesterol [LDL-C], high-density lipoprotein cholesterol [HDL-C], and triglycerides [TG]) in animals and humans. Ordinary flaxseed reduces TG, TC, LDL-C, and TC/HDL-C levels in a dose-dependent manner in animals. In humans, it reduces serum lipids in hypercholesterolemicpatients but has no effects in normocholesterolemicpatients. Flax oil has variable effects on serum lipids in normo- and hypercholesterolemic animals. Flax oil treatment, with a dosage containing greater than 25 g/day of α-linolenic acid, reduces serum lipids in humans. Although FLC reduces serum lipids and raises serum HDL-C in animals, its effects on serum lipids in humans are small and variable. Flax fibers exert small effects on serum lipids in humans. Crop Development Centre (CDC)-flaxseed, which contains low concentrations of α-linolenic acid, has significant lipid lowering effects in animals. Pure SDG has potent hypolipidemic effects and raises HDL-C. In conclusion, flaxseed and pure SDG have significant lipid-lowering effects in animals and humans, while other components of flaxseed have small and variable effects.
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Affiliation(s)
- Kailash Prasad
- Department of Physiology (APP), College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Amal S Khan
- Community, Health and Epidemiology, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Muhammad Shoker
- Department of Physiology (APP), College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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Lestari B, Walidah Z, Utomo RY, Murwanti R, Meiyanto E. Supplementation with extract of pumpkin seeds exerts estrogenic effects upon the uterine, serum lipids, mammary glands, and bone density in ovariectomized rats. Phytother Res 2019; 33:891-900. [PMID: 30663149 DOI: 10.1002/ptr.6280] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 12/03/2018] [Accepted: 12/13/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Beni Lestari
- Cancer Chemoprevention Research Center Faculty of Pharmacy, Universitas Gadjah Mada, Jalan Sekip Utara, Yogyakarta, 55281, Indonesia
| | - Ziana Walidah
- Cancer Chemoprevention Research Center Faculty of Pharmacy, Universitas Gadjah Mada, Jalan Sekip Utara, Yogyakarta, 55281, Indonesia
| | - Rohmad Yudi Utomo
- Cancer Chemoprevention Research Center Faculty of Pharmacy, Universitas Gadjah Mada, Jalan Sekip Utara, Yogyakarta, 55281, Indonesia
| | - Retno Murwanti
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Gadjah Mada Jalan Sekip Utara, Yogyakarta, 55281, Indonesia
| | - Edy Meiyanto
- Cancer Chemoprevention Research Center Faculty of Pharmacy, Universitas Gadjah Mada, Jalan Sekip Utara, Yogyakarta, 55281, Indonesia.,Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universitas Gadjah Mada Jalan Sekip Utara, Yogyakarta, 55281, Indonesia
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Kezimana P, Dmitriev AA, Kudryavtseva AV, Romanova EV, Melnikova NV. Secoisolariciresinol Diglucoside of Flaxseed and Its Metabolites: Biosynthesis and Potential for Nutraceuticals. Front Genet 2018; 9:641. [PMID: 30619466 PMCID: PMC6299007 DOI: 10.3389/fgene.2018.00641] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 11/27/2018] [Indexed: 12/28/2022] Open
Abstract
Secoisolariciresinol diglucoside (SDG), found mainly in flaxseed, is one of the essential lignans. SDG, as well as the beneficial fatty acid composition and high fiber content, has made flaxseed an important source of functional food or nutraceutical ingredients. Various studies have shown that SDG offers several health benefits, including protective effects against cardiovascular diseases, diabetes, cancer, and mental stress. These health benefits have been attributed to the antioxidant properties of SDG. Additionally, SDG metabolites, namely mammalian lignans, enterodiol and enterolactone, have shown promising effects against cancer. Therefore, understanding the biosynthetic pathway of SDG and its molecular mechanisms is a key to enable the production of new flaxseed cultivars rich in nutraceutical content. The present review highlights studies on the different health benefits of SDG, as well as lignan biosynthesis in flaxseed and genes involved in the biosynthetic pathway. Since SDG, the predominant lignan in flaxseed, is a glycosylated lignan, we also focus on studies investigating the genes involved in secoisolariciresinol glycosylation. These genes can be used to produce new cultivars with a novel level of glycosylation or lignan composition to maximize the yields of lignans with a therapeutic or protective potential.
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Affiliation(s)
- Parfait Kezimana
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
- Department of Agrobiotechnology, Peoples’ Friendship University of Russia (RUDN University), Moscow, Russia
| | - Alexey A. Dmitriev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Anna V. Kudryavtseva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Elena V. Romanova
- Department of Agrobiotechnology, Peoples’ Friendship University of Russia (RUDN University), Moscow, Russia
| | - Nataliya V. Melnikova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
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Huang G, Huang X, Liu M, Hua Y, Deng B, Jin W, Yan W, Tan Z, Wu Y, Liu B, Zhou Y. Secoisolariciresinol diglucoside prevents the oxidative stress-induced apoptosis of myocardial cells through activation of the JAK2/STAT3 signaling pathway. Int J Mol Med 2018; 41:3570-3576. [PMID: 29568942 DOI: 10.3892/ijmm.2018.3560] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 01/10/2018] [Indexed: 11/05/2022] Open
Abstract
Myocardial cell apoptosis mediated by oxidative stress has previously been identified as a key process in ischemic heart disease. Secoisolariciresinol diglucoside (SDG), a polyphenolic plant lignan primarily found in flaxseed, has been demonstrated to effectively protect myocardial cells from apoptosis. In the present study, the role of the Janus kinase 2 (JAK2)/signal transducer and activator of transcription 3 (STAT3) was investigated in mediating the protective effect of SDG. Findings of the present study revealed that treatment with H2O2 reduced cell viability and induced apoptosis in H9C2 rat cardiomyocytes. However, SDG was able to reduce the effect of H2O2 in a dose‑dependent manner. H2O2 reduced the expression level of phosphorylated STAT3 and inhibited the levels of B‑cell lymphoma‑extra‑large and induced myeloid leukemia cell differentiation protein, which are the STAT3 target genes. Conversely, SDG rescued phosphorylation of STAT3 and increased the levels of STAT3 target genes. Treatment with SDG alone led to a dose‑dependent increased phosphorylation of JAK2 and STAT3, without activating Src. Furthermore, the anti‑apoptotic effects of SDG were partially abolished by a JAK2/STAT3 inhibitor. In addition, molecular docking revealed that SDG may bind to the protein kinase domain of JAK2, at a binding energy of ‑8.258 kcal/mol. Molecular dynamics simulations revealed that JAK2‑SDG binding was stable. In conclusion, activation of the JAK2/STAT3 signaling pathway contributed to the anti‑apoptotic activity of SDG, which may be a potential JAK2 activator.
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Affiliation(s)
- Guiqiong Huang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Xiaofang Huang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Min Liu
- School of Public Health, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Yue Hua
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Bo Deng
- Department of Cardiology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510260, P.R. China
| | - Wen Jin
- Guangdong Second Provincial General Hospital, Guangzhou, Guangdong 510317, P.R. China
| | - Wen Yan
- Guangdong Second Provincial General Hospital, Guangzhou, Guangdong 510317, P.R. China
| | - Zhangbin Tan
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Yifen Wu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Bin Liu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Yingchun Zhou
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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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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Secoisolariciresinol diglucoside is a blood-brain barrier protective and anti-inflammatory agent: implications for neuroinflammation. J Neuroinflammation 2018; 15:25. [PMID: 29373982 PMCID: PMC5787274 DOI: 10.1186/s12974-018-1065-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 01/15/2018] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Secoisolariciresinol diglucoside (SDG), the main lignan in flaxseed, is known for its beneficial effects in inflammation, oxidative stress, heart disease, tumor progression, atherosclerosis, and diabetes. SDG might be an attractive natural compound that protects against neuroinflammation. Yet, there are no comprehensive studies to date investigating the effects of SDG on brain endothelium using relevant in vivo and in vitro models. METHODS We evaluated the effects of orally administered SDG on neuroinflammatory responses using in vivo imaging of the brain microvasculature during systemic inflammation and aseptic encephalitis. In parallel, the anti-inflammatory actions of SDG on brain endothelium and monocytes were evaluated in vitro blood-brain barrier (BBB) model. Multiple group comparisons were performed by one-way analysis of variance with Dunnet's post hoc tests. RESULTS We found that SDG diminished leukocyte adhesion to and migration across the BBB in vivo in the setting of aseptic encephalitis (intracerebral TNFα injection) and prevented enhanced BBB permeability during systemic inflammatory response (LPS injection). In vitro SDG pretreatment of primary human brain microvascular endothelial cells (BMVEC) or human monocytes diminished adhesion and migration of monocytes across brain endothelial monolayers in conditions mimicking CNS inflammatory responses. Consistent with our in vivo observations, SDG decreased expression of the adhesion molecule, VCAM1, induced by TNFα, or IL-1β in BMVEC. SDG diminished expression of the active form of VLA-4 integrin (promoting leukocyte adhesion and migration) and prevented the cytoskeleton changes in primary human monocytes activated by relevant inflammatory stimuli. CONCLUSION This study indicates that SDG directly inhibits BBB interactions with inflammatory cells and reduces the inflammatory state of leukocytes. Though more work is needed to determine the mechanism by which SDG mediates these effects, the ability of SDG to exert a multi-functional response reducing oxidative stress, inflammation, and BBB permeability makes it an exciting potential therapeutic for neuroinflammatory diseases. SDG can serve as an anti-inflammatory and barrier-protective agent in neuroinflammation.
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Pilar B, Güllich A, Oliveira P, Ströher D, Piccoli J, Manfredini V. Protective Role of Flaxseed Oil and Flaxseed Lignan Secoisolariciresinol Diglucoside Against Oxidative Stress in Rats with Metabolic Syndrome. J Food Sci 2017; 82:3029-3036. [DOI: 10.1111/1750-3841.13964] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 09/26/2017] [Accepted: 10/02/2017] [Indexed: 01/30/2023]
Affiliation(s)
- Bruna Pilar
- Postgraduate Program in Biochemistry; Federal Univ. of Pampa; Uruguaiana, Rio Grande do Sul Brazil
| | - Angélica Güllich
- Postgraduate Program in Biochemistry; Federal Univ. of Pampa; Uruguaiana, Rio Grande do Sul Brazil
| | - Patrícia Oliveira
- Postgraduate Program in Biochemistry; Federal Univ. of Pampa; Uruguaiana, Rio Grande do Sul Brazil
| | - Deise Ströher
- Postgraduate Program in Biochemistry; Federal Univ. of Pampa; Uruguaiana, Rio Grande do Sul Brazil
| | - Jacqueline Piccoli
- Postgraduate Program in Pharmaceutical Sciences; Federal Univ. of Pampa; Uruguaiana, Rio Grande do Sul Brazil
| | - Vanusa Manfredini
- Postgraduate Program in Biochemistry; Federal Univ. of Pampa; Uruguaiana, Rio Grande do Sul Brazil
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Maslov MY, Plotnikova TM, Anishchenko AM, Aliev OI, Nifantiev NE, Plotnikov MB. Hemorheological effects of secoisolariciresinol in ovariectomized rats. Biorheology 2017; 53:23-31. [PMID: 26756280 DOI: 10.3233/bir-15066] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Postmenopausal women often develop hemorheological disorders which may affect the systemic blood circulation and present a cardiovascular risk factor. OBJECTIVE We evaluated effects of secoisolariciresinol (SECO), a phytoestrogen, on hemorheological parameters and lipid peroxidation in a model of the age-related and/or surgical menopause induced by ovariectomy in rats. METHODS Arterial blood was sampled from sham-operated female rats, ovariectomized rats (OVX), and OVX treated with SECO (OVXSECO) (20 mg/kg/day intragastrically for two weeks). Plasma estrogen concentration and the following hemorheological parameters were measured: RBC aggregation (half-time of aggregation, T1/2; amplitude of aggregation, AMP; aggregation index, AI), RBC deformability (elongation index, EI), whole blood viscosity at the shear rate of 3-300 s-1, plasma viscosity, hematocrit, plasma fibrinogen. Lipid peroxidation was evaluated by measuring conjugated dienes (CD) and thiobarbituric acid reactive substances (TBARS) in plasma. RESULTS Ovariectomy in rats caused a 60% decrease in plasma estrogen level and triggered the development of macro- and microhemorheological abnormalities. Blood viscosity increased by 12-31%, RBC elongation index reduced by 16-28%, and T1/2 and AI increased by 35% and 29% respectively. The increase in blood viscosity correlated predominantly with reduced RBC deformability. Plasma CD and TBARS were elevated by 47% and 104% respectively. SECO therapy for OVX rats reduced blood viscosity by 9-18% and T1/2 by 32%, and increased EI by 4-17%. SECO therapy disrupted the correlation between blood viscosity and RBC deformability. Lipid peroxidation was significantly inhibited, as shown by the reduction in CD and TBARS plasma concentrations by 89% and 70% respectively. SECO did not affect plasma viscosity, estrogen or fibrinogen levels. CONCLUSIONS SECO treatment for OVX rats improves blood macro- and microrheological parameters, possibly through antioxidant protection of RBC.
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Affiliation(s)
- Mikhail Y Maslov
- Steward St. Elizabeth's Medical Center/Department of Anesthesiology, Critical Care and Pain Medicine, Tufts University School of Medicine, Boston, MA, USA. E-mail:
| | | | - Anna M Anishchenko
- E.D. Goldberg Institute of Pharmacology and Regenerative Medicine, Russian Academy of Sciences, Tomsk, Russia
| | - Oleg I Aliev
- E.D. Goldberg Institute of Pharmacology and Regenerative Medicine, Russian Academy of Sciences, Tomsk, Russia
| | - Nikolay E Nifantiev
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Mark B Plotnikov
- E.D. Goldberg Institute of Pharmacology and Regenerative Medicine, Russian Academy of Sciences, Tomsk, Russia
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Puukila S, Fernandes RO, Türck P, Carraro CC, Bonetto JHP, de Lima-Seolin BG, da Rosa Araujo AS, Belló-Klein A, Boreham D, Khaper N. Secoisolariciresinol diglucoside attenuates cardiac hypertrophy and oxidative stress in monocrotaline-induced right heart dysfunction. Mol Cell Biochem 2017; 432:33-39. [PMID: 28321539 DOI: 10.1007/s11010-017-2995-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 03/04/2017] [Indexed: 10/19/2022]
Abstract
Pulmonary arterial hypertension (PAH) occurs when remodeling of pulmonary vessels leads to increased pulmonary vascular resistance resulting in increased pulmonary arterial pressure. Increased pulmonary arterial pressure results in right ventricle hypertrophy and eventually heart failure. Oxidative stress has been implicated in the pathogenesis of PAH and may play a role in the regulation of cellular signaling involved in cardiac response to pressure overload. Secoisolariciresinol diglucoside (SDG), a component from flaxseed, has been shown to reduce cardiac oxidative stress in various pathophysiological conditions. We investigated the potential protective effects of SDG in a monocrotaline-induced model of PAH. Five- to six-week-old male Wistar rats were given a single intraperitoneal injection of monocrotaline (60 mg/kg) and sacrificed 21 days later where heart, lung, and plasma were collected. SDG (25 mg/kg) was given via gavage as either a 21-day co-treatment or pre-treatment of 14 days before monocrotaline administration and continued for 21 days. Monocrotaline led to right ventricle hypertrophy, increased lipid peroxidation, and elevated plasma levels of alanine transaminase (ALT) and aspartate transaminase (AST). Co-treatment with SDG did not attenuate hypertrophy or ALT and AST levels but decreased reactive oxygen species (ROS) levels and catalase and superoxide dismutase activity compared to the monocrotaline-treated group. Pre-treatment with SDG decreased right ventricle hypertrophy, ROS levels, lipid peroxidation, catalase, superoxide dismutase, and glutathione peroxidase activity and plasma levels of ALT and AST when compared to the monocrotaline group. These findings indicate that pre-treatment with SDG provided better protection than co-treatment in this model of right heart dysfunction, suggesting an important role for SDG in PAH and right ventricular remodeling.
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Affiliation(s)
- Stephanie Puukila
- Department of Biology, Lakehead University, 955 Oliver Road, Thunder Bay, ON, P7B 5E1, Canada
| | - Rafael Oliveira Fernandes
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, Porto Alegre, RS, 90050-170, Brazil.,Department of Pediatrics, Sainte-Justine University Hospital Research Center, University of Montreal, 3175 Côte Sainte-Catherine, Montreal, QC, H3T 1C5, Canada
| | - Patrick Türck
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, Porto Alegre, RS, 90050-170, Brazil
| | - Cristina Campos Carraro
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, Porto Alegre, RS, 90050-170, Brazil
| | - Jéssica Hellen Poletto Bonetto
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, Porto Alegre, RS, 90050-170, Brazil
| | - Bruna Gazzi de Lima-Seolin
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, Porto Alegre, RS, 90050-170, Brazil
| | - Alex Sander da Rosa Araujo
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, Porto Alegre, RS, 90050-170, Brazil
| | - Adriane Belló-Klein
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, Porto Alegre, RS, 90050-170, Brazil
| | - Douglas Boreham
- Northern Ontario School of Medicine, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON, P3E 2C6, Canada
| | - Neelam Khaper
- Medical Sciences Division, Northern Ontario School of Medicine, Lakehead University, 955 Oliver Road, Thunder Bay, ON, P7B 5E1, Canada.
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Vicente GC, Correia-Santos AM, Suzuki A, Velarde LGC, Chagas MA, Boaventura GT. Maternal exposure to diets containing flaxseed flour or flaxseed oil during pregnancy and lactation protects the aortic remodeling in adult male offspring of diabetic rat dams. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2015; 95:2973-2980. [PMID: 25483242 DOI: 10.1002/jsfa.7041] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 12/01/2014] [Accepted: 12/03/2014] [Indexed: 06/04/2023]
Abstract
BACKGROUND Diabetes during pregnancy is associated with cardiovascular complications in the fetus and extends into adulthood. Therapeutic applications of flaxseed have been studied in cardiovascular disorders, because its oilseed is the best plant source of omega-3 fatty acid, which is currently considered by researchers to be an essential protective against cardiovascular disease. The aim of this study was to evaluate the influence of flaxseed flour and oil on cardiovascular biochemical parameters and the histoarchitecture of the aorta in adult rats which were offspring of diabetic mothers. RESULTS At 100 days of age in offspring it was observed that maternal consumption of a high-fat diet containing flaxseed oil (FOG) and flaxseed flour (FFG) did not affect the serum concentration of monocyte chemoattractant protein-1, vascular endothelial growth factor, cholesterol, triglycerides, high-density-, low-density- or very-low-density-lipoprotein cholesterol. However, the thickness of the intima media layer of the aorta was significantly smaller in FOG and FFG groups; the lumen area was similar among the groups; and a higher percentage of elastic fiber was found in FOG and FFG groups. CONCLUSION These data suggest that the use of both flaxseed flour and its oil reduces the remodeling of the aorta; however; it has not been possible to modify the cardiovascular biochemical parameters.
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Affiliation(s)
- Gabriela Câmara Vicente
- Laboratory of Experimental Nutrition (LabNE), College of Nutrition, Federal Fluminense University (UFF), Niterói, RJ, Brazil
| | - André Manoel Correia-Santos
- Laboratory of Experimental Nutrition (LabNE), College of Nutrition, Federal Fluminense University (UFF), Niterói, RJ, Brazil
| | - Akemi Suzuki
- Laboratory of Experimental Nutrition (LabNE), College of Nutrition, Federal Fluminense University (UFF), Niterói, RJ, Brazil
| | | | - Maurício Alves Chagas
- Laboratory of Cellular and Extracellular Biomorphology, Federal Fluminense University (UFF), Niterói, RJ, Brazil
| | - Gilson Teles Boaventura
- Laboratory of Experimental Nutrition (LabNE), College of Nutrition, Federal Fluminense University (UFF), Niterói, RJ, Brazil
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Omega-3-fatty acid adds to the protective effect of flax lignan concentrate in pressure overload-induced myocardial hypertrophy in rats via modulation of oxidative stress and apoptosis. Int Immunopharmacol 2015; 28:751-63. [DOI: 10.1016/j.intimp.2015.08.005] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 07/27/2015] [Accepted: 08/03/2015] [Indexed: 12/28/2022]
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Pan LL, Wang XL, Wang XL, Zhu YZ. Sodium hydrosulfide prevents myocardial dysfunction through modulation of extracellular matrix accumulation and vascular density. Int J Mol Sci 2014; 15:23212-26. [PMID: 25514418 PMCID: PMC4284761 DOI: 10.3390/ijms151223212] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 11/16/2014] [Accepted: 11/26/2014] [Indexed: 01/02/2023] Open
Abstract
The aim was to examine the role of exogenous hydrogen sulfide (H2S) on cardiac remodeling in post-myocardial infarction (MI) rats. MI was induced in rats by ligation of coronary artery. After treatment with sodium hydrosulfide (NaHS, an exogenous H2S donor, 56 μM/kg·day) for 42 days, the effects of NaHS on left ventricular morphometric features, echocardiographic parameters, heme oxygenase-1 (HO-1), matrix metalloproteinases-9 (MMP-9), type I and type III collagen, vascular endothelial growth factor (VEGF), CD34, and α-smooth muscle actin (α-SMA) in the border zone of infarct area were analyzed to elucidate the protective mechanisms of exogenous H2S on cardiac function and fibrosis. Forty-two days post MI, NaHS-treatment resulted in a decrease in myocardial fibrotic area in association with decreased levels of type I, type III collagen and MMP-9 and improved cardiac function. Meanwhile, NaHS administration significantly increased cystathionine γ-lyase (CSE), HO-1, α-SMA, and VEGF expression. This effect was accompanied by an increase in vascular density in the border zone of infarcted myocardium. Our results provided the strong evidences that exogenous H2S prevented cardiac remodeling, at least in part, through inhibition of extracellular matrix accumulation and increase in vascular density.
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Affiliation(s)
- Li-Long Pan
- Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China.
| | - Xian-Li Wang
- Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China.
| | - Xi-Ling Wang
- Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China.
| | - Yi-Zhun Zhu
- Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China.
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Kertész A, Bombicz M, Priksz D, Balla J, Balla G, Gesztelyi R, Varga B, Haines DD, Tosaki A, Juhasz B. Adverse impact of diet-induced hypercholesterolemia on cardiovascular tissue homeostasis in a rabbit model: time-dependent changes in cardiac parameters. Int J Mol Sci 2013; 14:19086-108. [PMID: 24048247 PMCID: PMC3794822 DOI: 10.3390/ijms140919086] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 07/31/2013] [Accepted: 08/02/2013] [Indexed: 11/16/2022] Open
Abstract
The present study evaluates a hypothesis that diet-related hypercholesterolemia increases oxidative stress-related burden to cardiovascular tissue, resulting in progressively increased mortality, along with deterioration of electrophysiological and enzymatic function in rabbit myocardium. New Zealand white rabbits were divided into four groups, defined as follows: GROUP I, cholesterol-free rabbit chow for 12 weeks; GROUP II, cholesterol-free chow, 40 weeks; GROUP III, chow supplemented with 2% cholesterol, 12 weeks; GROUP IV, chow supplemented with 2% cholesterol, 40 weeks. At the 12 and 40 weeks time points, animals in each of the aforementioned cohorts were subjected to echocardiographic measurements, followed by sacrifice. Significant deterioration in major outcome variables measured in the present study were observed only in animals maintained for 40 weeks on 2% cholesterol-supplemented chow, with much lesser adverse effects noted in animals fed high cholesterol diets for only 12 weeks. It was observed that rabbits receiving high cholesterol diets for 40 weeks exhibited significantly increased mortality, worsened ejection fraction and general deterioration of cardiac functions, along with increased atherosclerotic plaque formation and infarct size. Additionally, myocardium of GROUP IV animals was observed to contain lower levels of heme oxygenase-1 (HO-1) and cytochrome c oxidase III (COX III) protein relative to the controls.
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Affiliation(s)
- Attila Kertész
- Department of Cardiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen 4032, Hungary; E-Mail:
| | - Mariann Bombicz
- Department of Pharmacology, Faculty of Pharmacy, University of Debrecen, Nagyerdei krt. 98, Debrecen 4032, Hungary; E-Mails: (M.B.); (D.P.); (R.G.); (B.V.); (D.D.H.); (A.T.)
| | - Daniel Priksz
- Department of Pharmacology, Faculty of Pharmacy, University of Debrecen, Nagyerdei krt. 98, Debrecen 4032, Hungary; E-Mails: (M.B.); (D.P.); (R.G.); (B.V.); (D.D.H.); (A.T.)
| | - Jozsef Balla
- MTA-DE Vascular Biology, Thrombosis and Hemostasis Research Group, Hungarian Academy of Sciences, University of Debrecen, Nagyerdei krt. 98, Debrecen 4032, Hungary; E-Mails: (J.B.); (G.B.)
- Department of Nephrology, Medical and Health Science Center, University of Debrecen, Nagyerdei krt. 98, Debrecen 4032, Hungary
| | - Gyorgy Balla
- MTA-DE Vascular Biology, Thrombosis and Hemostasis Research Group, Hungarian Academy of Sciences, University of Debrecen, Nagyerdei krt. 98, Debrecen 4032, Hungary; E-Mails: (J.B.); (G.B.)
- Department of Pediatrics, University of Debrecen, Nagyerdei krt. 98, Debrecen 4032, Hungary
| | - Rudolf Gesztelyi
- Department of Pharmacology, Faculty of Pharmacy, University of Debrecen, Nagyerdei krt. 98, Debrecen 4032, Hungary; E-Mails: (M.B.); (D.P.); (R.G.); (B.V.); (D.D.H.); (A.T.)
| | - Balazs Varga
- Department of Pharmacology, Faculty of Pharmacy, University of Debrecen, Nagyerdei krt. 98, Debrecen 4032, Hungary; E-Mails: (M.B.); (D.P.); (R.G.); (B.V.); (D.D.H.); (A.T.)
| | - David D. Haines
- Department of Pharmacology, Faculty of Pharmacy, University of Debrecen, Nagyerdei krt. 98, Debrecen 4032, Hungary; E-Mails: (M.B.); (D.P.); (R.G.); (B.V.); (D.D.H.); (A.T.)
| | - Arpad Tosaki
- Department of Pharmacology, Faculty of Pharmacy, University of Debrecen, Nagyerdei krt. 98, Debrecen 4032, Hungary; E-Mails: (M.B.); (D.P.); (R.G.); (B.V.); (D.D.H.); (A.T.)
| | - Bela Juhasz
- Department of Pharmacology, Faculty of Pharmacy, University of Debrecen, Nagyerdei krt. 98, Debrecen 4032, Hungary; E-Mails: (M.B.); (D.P.); (R.G.); (B.V.); (D.D.H.); (A.T.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel./Fax: +36-52-255-586
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Ghule AE, Jadhav SS, Bodhankar SL. Antiarrhythmic effect of flax lignan concentrate alone and concomitantly with omega 3 fatty acid mediated through inhibition of cardiomyocyte apoptosis in digoxin induced ventricular arrhythmia and lethality in rats. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.biomag.2012.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Juhasz B, Varga B, Czompa A, Bak I, Lekli I, Gesztelyi R, Zsuga J, Kemeny-Beke A, Antal M, Szendrei L, Tosaki A. Postischemic cardiac recovery in heme oxygenase-1 transgenic ischemic/reperfused mouse myocardium. J Cell Mol Med 2012; 15:1973-82. [PMID: 20716121 PMCID: PMC3918052 DOI: 10.1111/j.1582-4934.2010.01153.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Heme oxygenase-1 (HO-1) transgenic mice (Tg) were created using a rat HO-1 genomic transgene. Transgene expression was detected by RT-PCR and Western blots in the left ventricle (LV), right ventricle (RV) and septum (S) in mouse hearts, and its function was demonstrated by the elevated HO enzyme activity. Tg and non-transgenic (NTg) mouse hearts were isolated and subjected to ischemia/reperfusion. Significant post-ischemic recovery in coronary flow (CF), aortic flow (AF), aortic pressure (AOP) and first derivative of AOP (AOPdp/dt) were detected in the HO-1 Tg group compared to the NTg values. In HO-1 Tg hearts treated with 50 μmol/kg of tin protoporphyrin IX (SnPPIX), an HO enzyme inhibitor, abolished the post-ischemic cardiac recovery. HO-1 related carbon monoxide (CO) production was detected in NTg, HO-1 Tg and HO-1 Tg + SnPPIX treated groups, and a substantial increase in CO production was observed in the HO-1 Tg hearts subjected to ischemia/reperfusion. Moreover, in ischemia/reperfusion-induced tissue Na+ and Ca2+ gains were reduced in HO-1 Tg group in comparison with the NTg and HO-1 Tg + SnPPIX treated groups; furthermore K+ loss was reduced in the HO-1 Tg group. The infarct size was markedly reduced from its NTg control value of 37 ± 4% to 20 ± 6% (P < 0.05) in the HO-1 Tg group, and was increased to 47 ± 5% (P < 0.05) in the HO-1 knockout (KO) hearts. Parallel to the infarct size reduction, the incidence of total and sustained ventricular fibrillation were also reduced from their NTg control values of 92% and 83% to 25% (P < 0.05) and 8% (P < 0.05) in the HO-1 Tg group, and were increased to 100% and 100% in HO-1 KO−/− hearts. Immunohistochemical staining of HO-1 was intensified in HO-1 Tg compared to the NTg myocardium. Thus, the HO-1 Tg mouse model suggests a valuable therapeutic approach in the treatment of ischemic myocardium.
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Affiliation(s)
- Bela Juhasz
- Department of Pharmacology, Health Science Center, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
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Abstract
The intrinsic defense mechanisms of the body are critical in protecting tissues from injury in response to pathological stress. Heme oxygenase-1 (HO-1), a stress response protein, is induced in response to various pathological stimuli to serve a cytoprotective function. By degrading the oxidant heme and generating the antioxidant bilirubin and anti-inflammatory molecule carbon monoxide, HO-1 may protect cell from injury due to oxidative and pathological stress. Oxidative stress in the heart caused by ischemia and reperfusion leads to cardiomyocyte death and subsequent myocardial infarction. Vascular diseases including atherosclerosis, graft failure, and restenosis are all associated with reactive oxygen species-induced injury and inflammation. Given that cardiovascular disease is the leading cause of death worldwide, there is considerable interest in developing new strategies for preventing and treating cardiovascular disease. Since HO-1 is induced in the heart and blood vessels in response to various stresses, a role of HO-1 has been implicated in cardiovascular homeostasis. Numerous studies using pharmacological method or genetic approach have since demonstrated the cardiovascular protective function of HO-1. Importantly, a number of studies have associated human HO-1 gene promoter polymorphisms with risk for vascular diseases. Taken together, HO-1 has a great therapeutic potential for cardiovascular disease.
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Affiliation(s)
- Meng-Ling Wu
- Institute of Cellular and System Medicine, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli, Taiwan
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Cardioprotective activity of flax lignan concentrate extracted from seeds of Linum usitatissimum in isoprenalin induced myocardial necrosis in rats. Interdiscip Toxicol 2011; 4:90-7. [PMID: 21753905 PMCID: PMC3131680 DOI: 10.2478/v10102-011-0016-8] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2011] [Revised: 05/04/2011] [Accepted: 05/10/2011] [Indexed: 11/29/2022] Open
Abstract
The objective of the study was to evaluate the cardioprotective activity of flax lignan concentrate (FLC) in isoprenalin (ISO) induced cardiotoxicity in rats. Male Wistar rats (200–230 g) were divided into three groups. Group I: control, Group II: isoprenalin, Group III: FLC (500 mg/kg, p.o.) orally for 8 days and in group II and III isoprenalin 5.25 mg/kg, s.c. on day 9 and 8.5 mg/kg on day 10. On day 10 estimation of marker enzymes in serum and haemodynamic parameters were recorded. Animals were sacrificed, histology of heart was performed. Isoprenalin showed cardiotoxicity, manifested by increased levels of marker enzymes and increased heart rate. FLC treatment reversed these biochemical changes significantly compared with ISO group. The cardiotoxic effect of isoprenalin was less in FLC pretreated animals, which was confirmed in histopathological alterations. Haemodynamic, biochemical alteration and histopathological results suggest a cardioprotective protective effect of FLC in isoprenalin induced cardiotoxicity.
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Ou ZJ, Chang FJ, Luo D, Liao XL, Wang ZP, Zhang X, Xu YQ, Ou JS. Endothelium-derived microparticles inhibit angiogenesis in the heart and enhance the inhibitory effects of hypercholesterolemia on angiogenesis. Am J Physiol Endocrinol Metab 2011; 300:E661-8. [PMID: 21245463 DOI: 10.1152/ajpendo.00611.2010] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Therapeutic angiogenesis remains unsuccessful in coronary artery disease. It is known that plasma endothelium-derived microparticles (EMPs) are increased in coronary artery disease and that hypercholesterolemia can inhibit angiogenesis. We evaluated the relationship between EMPs and hypercholesterolemia in the impairment of angiogenesis. EMPs isolated from human umbilical vein endothelial cells were injected into low-density lipoprotein receptor-null (LDLr(-/-)) mice fed a Western diet for 2 wk and C57BL6 mice for 6 h or were directly added to the tissue culture media. Hearts isolated from mice were sectioned and cultured, and endothelial tube formation was measured. The expression and phosphorylation of endothelial NO synthase (eNOS) and the generation of NO in the hearts were determined. Angiogenesis was inhibited by pathophysiological concentrations of EMPs but not physiological concentrations of EMPs in hearts from C57BL6 mice. However, angiogenesis was inhibited by EMPs at both physiological and pathophysiological concentrations of EMPs in hearts from hypercholesterolemic LDLr(-/-) mice. Pathophysiological concentrations of EMPs decreased eNOS phosphorylation at Ser(1177) and NO generation without altering eNOS expression in hearts from C57BL6 mice. Both physiological and pathophysiological concentrations of EMPs decreased not only eNOS phosphorylation at Ser(1177) and NO generation, but eNOS expression in hypercholesterolemic hearts from LDLr(-/-) mice. These data demonstrated that pathophysiological concentrations of EMPs could inhibit angiogenesis in hearts by decreasing eNOS activity. EMPs and hypercholesterolemia mutually enhanced their inhibitory effect of angiogenesis by inducing eNOS dysfunction. Our findings suggest a novel mechanism by which hypercholesterolemia impairs angiogenesis.
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Affiliation(s)
- Zhi-Jun Ou
- Division of Hypertension and Vascular Diseases, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Peterson J, Dwyer J, Adlercreutz H, Scalbert A, Jacques P, McCullough ML. Dietary lignans: physiology and potential for cardiovascular disease risk reduction. Nutr Rev 2010; 68:571-603. [PMID: 20883417 DOI: 10.1111/j.1753-4887.2010.00319.x] [Citation(s) in RCA: 220] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
The present review of the literature on lignan physiology and lignan intervention and epidemiological studies was conducted to determine if lignans decrease the risks of cardiovascular disease in Western populations. Five intervention studies using flaxseed lignan supplements indicated beneficial associations with C-reactive protein, and a meta-analysis that included these studies also suggested lignans have a lowering effect on plasma total and low-density lipoprotein cholesterol. Three intervention studies using sesamin supplements indicated possible lipid- and blood pressure-lowering associations. Eleven human observational epidemiological studies examined dietary intakes of lignans in relation to cardiovascular disease risk. Five showed decreased risk with either increasing dietary intakes of lignans or increased levels of serum enterolactone (an enterolignan used as a biomarker of lignan intake), five studies were of borderline significance, and one was null. The associations between lignans and decreased risk of cardiovascular disease are promising, but they are yet not well established, perhaps due to low lignan intakes in habitual Western diets. At the higher doses used in intervention studies, associations were more evident.
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Affiliation(s)
- Julia Peterson
- Jean Mayer United States Department of Agriculture Human Nutrition Research Center on Aging and Friedman School of Nutrition Science and Policy, Tufts University, Boston, Massachussets, USA
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Prolonged administration of secoisolariciresinol diglycoside increases lignan excretion and alters lignan tissue distribution in adult male and female rats. Br J Nutr 2010; 104:833-41. [PMID: 20388250 DOI: 10.1017/s0007114510001194] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Limited information is available on lignan metabolism and tissue distribution between sexes and the effects of prolonged lignan exposure on tissue concentrations. In the present study, excretion and tissue distribution of lignans were compared after 1 d and 7 d administration of flaxseed lignan secoisolariciresinol diglycoside (SDG) in male and female rats. Sprague-Dawley rats were daily gavaged per os with 3H-SDG (3.7 kBq/g body weight (bwt)) and unlabelled SDG (5.3 microg/g bwt). Urine, faeces, serum and tissues (liver, kidneys, bladder, spleen, lungs, brain, thymus, heart, muscle, adipose, mammary gland, ovaries, vagina, uterus, testis, seminal vesicles, coagulating glands and ventral prostate) were collected at 0, 12 and 24 h after a single lignan dose or after the last dose of 7 d exposure. The sample total lignan content was measured as radioactivity by liquid scintillation counting. In both sexes, majority of radioactivity was excreted in faeces (40-83%) and urine (1.2-5.2%). 3H-SDG administration increased radioactivity in all tissues at all time points, and the levels were further increased after prolonged SDG exposure. Liver contained majority of the tissue lignans (48-56%) in both sexes after both exposure regimens. After prolonged SDG exposure, the serum lignan concentrations had reached a plateau which was approximately 4-fold of that of acute exposure, whereas in both sexes, concentrations in skin and kidneys still increased, indicating tissue accumulation. After prolonged exposure, females had higher lignan concentrations in heart and thymus at all time points, demonstrating sex-related differences in lignan tissue distribution and the possibility for sex-specific treatment responses. These findings facilitate identification of target tissues for local lignan actions in vivo.
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Zhao N, Liu YY, Wang F, Hu BH, Sun K, Chang X, Pan CS, Fan JY, Wei XH, Li X, Wang CS, Guo ZX, Han JY. Cardiotonic pills, a compound Chinese medicine, protects ischemia-reperfusion-induced microcirculatory disturbance and myocardial damage in rats. Am J Physiol Heart Circ Physiol 2010; 298:H1166-76. [DOI: 10.1152/ajpheart.01186.2009] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Cardiotonic pills (CP) is a compound Chinese medicine widely used in China, as well as other countries, for the treatment of cardiovascular disease. However, limited data are available regarding the mechanism of action of CP on myocardial function during ischemia-reperfusion (I/R) injury. In this study, we examined the effect of CP on I/R-induced coronary microcirculatory disturbance and myocardial damage. Male Sprague-Dawley rats were subjected to left coronary anterior descending branch occlusion for 30 min followed by reperfusion with or without pretreatment with CP (0.1, 0.4, or 0.8 g/kg). Coronary blood flow, vascular diameter, velocity of red blood cells, and albumin leakage were evaluated in vivo after reperfusion. Neutrophil expression of CD18, malondialdehyde, inhibitor-κBα, myocardial infarction, endothelial expression of intercellular adhesion molecule 1, apoptosis-related proteins, and histological and ultrastructural evidence of myocardial damage were assessed after reperfusion. Pretreatment with CP (0.8 g/kg) significantly attenuated the I/R-induced myocardial microcirculatory disturbance, including decreased coronary blood flow and red blood cell velocity in arterioles, increased expression of CD18 on neutrophils and intercellular adhesion molecule 1 on endothelial cells, and albumin leakage from venules. In addition, the drug significantly ameliorated the I/R-induced myocardial damage and apoptosis indicated by increased malondialdehyde, infarct size, myocardial ultrastructural changes, terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling-positive myocardial cells, inhibitor-κBα degradation, and expression of Bcl-2, Bax, and caspase-3 in myocardial tissues. The results provide evidence for the potential role of CP in preventing microcirculatory disturbance and myocardial damage following I/R injury.
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Affiliation(s)
- Na Zhao
- Tasly Microcirculation Research Center, Health Science Center, and
| | - Yu-Ying Liu
- Tasly Microcirculation Research Center, Health Science Center, and
| | - Fang Wang
- Tasly Microcirculation Research Center, Health Science Center, and
| | - Bai-He Hu
- Tasly Microcirculation Research Center, Health Science Center, and
| | - Kai Sun
- Tasly Microcirculation Research Center, Health Science Center, and
| | - Xin Chang
- Tasly Microcirculation Research Center, Health Science Center, and
| | - Chun-Shui Pan
- Tasly Microcirculation Research Center, Health Science Center, and
| | - Jing-Yu Fan
- Tasly Microcirculation Research Center, Health Science Center, and
| | - Xiao-Hong Wei
- Tasly Microcirculation Research Center, Health Science Center, and
| | - Xiang Li
- Tasly Microcirculation Research Center, Health Science Center, and
| | - Chuan-She Wang
- Tasly Microcirculation Research Center, Health Science Center, and
| | - Zhi-Xin Guo
- Tasly Microcirculation Research Center, Health Science Center, and
| | - Jing-Yan Han
- Tasly Microcirculation Research Center, Health Science Center, and
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing, China
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Health effects with consumption of the flax lignan secoisolariciresinol diglucoside. Br J Nutr 2009; 103:929-38. [PMID: 20003621 DOI: 10.1017/s0007114509992753] [Citation(s) in RCA: 155] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Flaxseed is the richest source of the lignan secoisolariciresinol diglucoside (SDG). After ingestion, SDG is converted to secoisolariciresinol, which is further metabolised to the mammalian lignans enterodiol and enterolactone. A growing body of evidence suggests that SDG metabolites may provide health benefits due to their weak oestrogenic or anti-oestrogenic effects, antioxidant activity, ability to induce phase 2 proteins and/or inhibit the activity of certain enzymes, or by mechanisms yet unidentified. Human and animal studies identify the benefits of SDG consumption. SDG metabolites may protect against CVD and the metabolic syndrome by reducing lipid and glucose concentrations, lowering blood pressure, and decreasing oxidative stress and inflammation. Flax lignans may also reduce cancer risk by preventing pre-cancerous cellular changes and by reducing angiogenesis and metastasis. Thus, dietary SDG has the potential to decrease the incidence of several chronic diseases that result in significant morbidity and mortality in industrialised countries. The available literature, though, makes it difficult to clearly identify SDG health effects because of the wide variability in study methods. However, the current evidence suggests that a dose of at least 500 mg SDG/d for approximately 8 weeks is needed to observe positive effects on cardiovascular risk factors in human patients. Flaxseed and its lignan extracts appear to be safe for most adult populations, though animal studies suggest that pregnant women should limit their exposure. The present review discusses the potential health benefits of SDG in humans, with supporting evidence from animal studies, and offers suggestions for future research.
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Penumathsa SV, Koneru S, Samuel SM, Maulik G, Bagchi D, Yet SF, Menon VP, Maulik N. Strategic targets to induce neovascularization by resveratrol in hypercholesterolemic rat myocardium: role of caveolin-1, endothelial nitric oxide synthase, hemeoxygenase-1, and vascular endothelial growth factor. Free Radic Biol Med 2008; 45:1027-34. [PMID: 18694817 PMCID: PMC2587496 DOI: 10.1016/j.freeradbiomed.2008.07.012] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2008] [Revised: 06/21/2008] [Accepted: 07/10/2008] [Indexed: 11/17/2022]
Abstract
Endothelial dysfunction and impaired angiogenesis constitute a hallmark of hypercholesterolemia. This study was designed to examine the effects of resveratrol, an antioxidant with lipid-lowering properties similar to those of statins, on neovascularization along with caveolar interaction with proangiogenic molecules in hypercholesterolemic rats. Animals were divided into: rats maintained on a normal diet (control group); rats maintained on a 5% high-cholesterol diet for 8 weeks (HC group); and rats maintained on a 5% high-cholesterol diet for 8 weeks and administered resveratrol (20 mg/kg) orally for 2 weeks (HCR group). Myocardial infarction was induced by ligating the left anterior descending artery. Herein we examined a novel method for stimulating myocardial angiogenesis by pharmacological preconditioning with resveratrol at both the capillary and arteriolar levels and the potential role of hemeoxygenase-1, endothelial nitric oxide synthase and caveolin-1 in mediating such a response. We also investigated the functional relevance of such treatment by assessing whether the induced neovascularization can help preserve left ventricle-contractile functional reserve in the setting of a chronic hypercholesterolemic condition. Four weeks after sham surgery and left anterior descending artery occlusion, rats underwent echocardiographic evaluation, which revealed improvement in ejection fraction and fractional shortening in the HCR group compared with the HC group. Left ventricular tissue sections displayed increased capillary and arteriolar density in the HCR group compared with the HC group. Western blot analysis revealed downregulation of vascular endothelial growth factor and hemeoxygenase-1 and increased association of caveolin-1 eNOS in the HC group, decreasing the availability of eNOS to the system; which was reversed with resveratrol treatment in the HCR group. This study was further validated in cardiac-specific hemeoxygenase-1-overexpressed mice assuming molecular cross-talk between the targets. Hence, our data identified potential regulators that primarily attenuate endothelial dysfunction by resveratrol therapy in hypercholesterolemic myocardium.
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Affiliation(s)
- Suresh Varma Penumathsa
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut Health Center, Farmington, CT, USA
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar, TN, India
| | - Srikanth Koneru
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut Health Center, Farmington, CT, USA
| | - Samson Mathews Samuel
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut Health Center, Farmington, CT, USA
| | - Gautam Maulik
- Department of Thoracic Surgery, Harvard Medical School, Boston, MA, USA
| | | | - Shaw-Fang Yet
- National Health Research Institutes, Zhunan Town, Miaoli County, Taiwan
- Department of Medicine, Brigham and Women’s Hospital, Boston, USA
| | - Venogopal P. Menon
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar, TN, India
| | - Nilanjana Maulik
- Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut Health Center, Farmington, CT, USA
- Address correspondence to: Nilanjana Maulik, Ph.D., FACN, FICA, Molecular Cardiology and Angiogenesis Laboratory, Department of Surgery, University of Connecticut Health Center, 263 Farmington Avenue, Farmington, CT 06030-1110, USA, Phone No: (860) 679-2857; Fax No: (860) 679-2825,
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