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Herbal Sources of Magnesium as a Promising Multifaceted Intervention for the Management of COVID-19. Nat Prod Commun 2022. [DOI: 10.1177/1934578x221116235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The coronavirus-disease 2019 (COVID-19) was announced as a global pandemic by the World Health Organization (WHO), and it affected all human groups. Severe COVID-19 is characterized by cytokine storms, which can lead to multiorgan failure and death, although fever and cough are the most typical symptoms of mild COVID-19. Plant-based diets provide a 73% lower risk of moderate-to-severe COVID-19. Additionally, the association between low levels of some micronutrients and the adverse clinical consequences of COVID-19 has been demonstrated. So, nutritional therapy can become part of patient care for the survival of this life-threatening disease (COVID-19) also short-term recovery. Magnesium as an essential micronutrient due to its anti-inflammatory and beneficial effects can effectively prevent COVID-19 pandemic by playing a role in the treatment of comorbidities such as diabetes and cardiovascular disorders as major risk factors for mortality. Sufficient magnesium to stay healthy is provided by a proper daily diet, and there is usually no need to take magnesium supplements. Considering that almost half of the dietary magnesium comes from fruits, vegetables, nuts, and grains, it seems necessary to pay attention to the consumption of edible plants containing sufficient magnesium as part of the diet to prevent severe COVID-19. In this study, we have described the beneficial effects of sufficient magnesium levels to control COVID-19 and the importance of plant-based magnesium-rich diets. Additionally, we have listed some edible magnesium-rich plants.
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Vida C, Carracedo J, de Sequera P, Bodega G, Pérez R, Alique M, Ramírez R. A high magnesium concentration in citrate dialysate prevents oxidative stress and damage in human monocytes in vitro. Clin Kidney J 2021; 14:1403-1411. [PMID: 33959268 PMCID: PMC8087128 DOI: 10.1093/ckj/sfaa131] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND The use of dialysis fluids (DFs) during haemodialysis has been associated with increased oxidative stress and reduced serum magnesium (Mg) levels, contributing to chronic inflammation. Since the role of Mg in modulating immune function and reducing oxidative stress has been demonstrated, the aim of this study was to characterize in vitro whether increasing the Mg concentration in DFs could protect immune cells from oxidative stress and damage. METHODS The effect of citrate [citrate dialysis fluid (CDF), 1 mM] or acetate [acetate dialysis fluid (ADF), 3 mM] dialysates with low (0.5 mM; routinely used) or high (1 mM, 1.25 mM and 2 mM) Mg concentrations was assessed in THP-1 human monocytes. The levels of reactive oxygen species (ROS), malondialdehyde (MDA) and oxidized/reduced (GSSG/GSH) glutathione were quantified under basal and inflammatory conditions (stimulation with lipopolysaccharide, LPS). RESULTS The increase of Mg in CDF resulted in a significant reduction of ROS production under basal and inflammatory conditions (extremely marked in 2 mM Mg; P < 0.001). These effects were not observed in ADF. Interestingly, in a dose-dependent manner, high Mg doses in CDF reduced oxidative stress in monocytes under both basal and inflammatory conditions. In fact, 2 mM Mg significantly decreased the levels of GSH, GSSG and MDA and the GSSG/GSH ratio in relation to 0.5 mM Mg. CONCLUSIONS CDF produces lower oxidative stress than ADF. The increase of Mg content in DFs, especially in CDF, could have a positive and protective effect in reducing oxidative stress and damage in immune cells, especially under inflammatory conditions.
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Affiliation(s)
- Carmen Vida
- Dpto de Biología de Sistemas, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain
| | - Julia Carracedo
- Dpto Genética, Fisiología y Microbiología (Sección Fisiología), Universidad Complutense de Madrid, Madrid, Spain
- Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), Madrid, Spain
| | - Patricia de Sequera
- Sección de Nefrología, Hospital Universitario Infanta Leonor, Madrid, Spain
- Dpto de Medicina, Universidad Complutense de Madrid, Madrid, Spain
| | - Guillermo Bodega
- Dpto de Biomedicina y Biotecnología, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain
| | - Rafael Pérez
- Sección de Nefrología, Hospital Universitario Infanta Leonor, Madrid, Spain
| | - Matilde Alique
- Dpto de Biología de Sistemas, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain
- Instituto Ramón y Cajal de Investigación Sanitaria, (IRYCIS), Madrid, Spain
| | - Rafael Ramírez
- Dpto de Biología de Sistemas, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain
- Instituto Ramón y Cajal de Investigación Sanitaria, (IRYCIS), Madrid, Spain
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Aptamer-navigated copolymeric drug carrier system for in vitro delivery of MgO nanoparticles as insulin resistance reversal drug candidate in Type 2 diabetes. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101764] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Shi Z, Abou-Samra AB. Association of low serum magnesium with diabetes and hypertension: Findings from Qatar Biobank study. Diabetes Res Clin Pract 2019; 158:107903. [PMID: 31678625 DOI: 10.1016/j.diabres.2019.107903] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 09/28/2019] [Accepted: 10/25/2019] [Indexed: 12/17/2022]
Abstract
AIM We aimed to examine the association between serum magnesium and diabetes and hypertension among Qatari adults. METHODS In the cross-sectional study, we used data from 9693 Qatari participants aged 20 years and above attending the Qatar Biobank (QBB) Study. Blood samples were analyzed in a central lab. Habitual food consumption was assessed by a food frequency questionnaire. Reduced rank regression was used to construct magnesium related dietary pattern (MRDP) using serum magnesium as a response variable. Diabetes was defined by blood glucose, HbA1c or known diabetes. Prediabetes was defined as HbA1c between 5.7% and 6.4%. Subclinical magnesium deficiency was defined as serum magnesium <0.85 mmol/L. RESULTS The prevalence of diabetes, prediabetes and subclinical magnesium deficiency was 18.9%, 11.5% and 59.5%, respectively. Across the quartiles of serum magnesium from high to low, the prevalence ratios (PR 95%CI) for diabetes were 1.00, 1.35, 1.88, and 2.70 (95%CI 2.38-3.05), respectively (p for trend <0.001). The presence of hypertension significantly increased the probability of diabetes along a wide range of low serum magnesium. A low intake of MRDP was also positively associated with diabetes and high HbA1c. CONCLUSION Subclinical magnesium deficiency is common in Qatar and associates with diabetes, prediabetes and hypertension in Qatari adults.
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Affiliation(s)
- Zumin Shi
- Human Nutrition Department, College of Health Sciences, QU Health, Qatar University, Doha, Qatar.
| | - Abdul Badi Abou-Samra
- Qatar Metabolic Institute, Endocrine Division, Department of Medicine, Hamad Medical Corporation and Weill Cornell Medicine - Qatar, Doha, Qatar
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Prevention of Cardiovascular Disease: Screening for Magnesium Deficiency. Cardiol Res Pract 2019; 2019:4874921. [PMID: 31192005 PMCID: PMC6525869 DOI: 10.1155/2019/4874921] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Accepted: 03/17/2019] [Indexed: 12/15/2022] Open
Abstract
Magnesium is an essential mineral naturally present in the human body, where it acts as cofactor in several enzymatic reactions. Magnesium is a key cardiovascular regulator, which maintains electrical, metabolic, and vascular homeostasis. Moreover, magnesium participates in inflammation and oxidative processes. In fact, magnesium deficiency is involved in the pathophysiology of arterial hypertension, diabetes mellitus, dyslipidemia, metabolic syndrome, endothelial dysfunction, coronary artery disease, cardiac arrhythmias, and sudden cardiac death. In consideration of the great public-health impact of cardiovascular disease, the recognition of the negative effects of magnesium deficiency suggests the possible role of hypomagnesaemia as cardiovascular risk factor and the use of serum magnesium level for the screening and prevention of cardiovascular risk factors and cardiovascular diseases. Moreover, it might help with the identification of new therapeutical strategies for the management of cardiovascular disease through magnesium supplementation.
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Cao Y, Zhen S, Atlantis E, Shi Z. Dietary magnesium-to-iron intake ratios and risk of impaired fasting glucose in Chinese adults: The prospective Jiangsu Nutrition Study (JIN). JOURNAL OF NUTRITION & INTERMEDIARY METABOLISM 2018. [DOI: 10.1016/j.jnim.2018.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022] Open
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Kurstjens S, van Diepen JA, Overmars-Bos C, Alkema W, Bindels RJM, Ashcroft FM, Tack CJJ, Hoenderop JGJ, de Baaij JHF. Magnesium deficiency prevents high-fat-diet-induced obesity in mice. Diabetologia 2018; 61:2030-2042. [PMID: 29987474 PMCID: PMC6096631 DOI: 10.1007/s00125-018-4680-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 06/01/2018] [Indexed: 12/24/2022]
Abstract
AIMS/HYPOTHESIS Hypomagnesaemia (blood Mg2+ <0.7 mmol/l) is a common phenomenon in individuals with type 2 diabetes. However, it remains unknown how a low blood Mg2+ concentration affects lipid and energy metabolism. Therefore, the importance of Mg2+ in obesity and type 2 diabetes has been largely neglected to date. This study aims to determine the effects of hypomagnesaemia on energy homeostasis and lipid metabolism. METHODS Mice (n = 12/group) were fed either a low-fat diet (LFD) or a high-fat diet (HFD) (10% or 60% of total energy) in combination with a normal- or low-Mg2+ content (0.21% or 0.03% wt/wt) for 17 weeks. Metabolic cages were used to investigate food intake, energy expenditure and respiration. Blood and tissues were taken to study metabolic parameters and mRNA expression profiles, respectively. RESULTS We show that low dietary Mg2+ intake ameliorates HFD-induced obesity in mice (47.00 ± 1.53 g vs 38.62 ± 1.51 g in mice given a normal Mg2+-HFD and low Mg2+-HFD, respectively, p < 0.05). Consequently, fasting serum glucose levels decreased and insulin sensitivity improved in low Mg2+-HFD-fed mice. Moreover, HFD-induced liver steatosis was absent in the low Mg2+ group. In hypomagnesaemic HFD-fed mice, mRNA expression of key lipolysis genes was increased in epididymal white adipose tissue (eWAT), corresponding to reduced lipid storage and high blood lipid levels. Low Mg2+-HFD-fed mice had increased brown adipose tissue (BAT) Ucp1 mRNA expression and a higher body temperature. No difference was observed in energy expenditure between the two HFD groups. CONCLUSIONS/INTERPRETATION Mg2+-deficiency abrogates HFD-induced obesity in mice through enhanced eWAT lipolysis and BAT activity.
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Affiliation(s)
- Steef Kurstjens
- Department of Physiology (286), Radboud Institute for Molecular Life Sciences, Radboud university medical center, P. O. Box 9101, 6500 HB, Nijmegen, the Netherlands
| | - Janna A van Diepen
- Department of Internal Medicine, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, 6500 HB, the Netherlands
| | - Caro Overmars-Bos
- Department of Physiology (286), Radboud Institute for Molecular Life Sciences, Radboud university medical center, P. O. Box 9101, 6500 HB, Nijmegen, the Netherlands
| | - Wynand Alkema
- Centre for Molecular and Biomolecular Informatics, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, 6500 HB, the Netherlands
| | - René J M Bindels
- Department of Physiology (286), Radboud Institute for Molecular Life Sciences, Radboud university medical center, P. O. Box 9101, 6500 HB, Nijmegen, the Netherlands
| | - Frances M Ashcroft
- Department of Physiology, Anatomy & Genetics, University of Oxford, Oxford, UK
| | - Cees J J Tack
- Department of Internal Medicine, Radboud Institute for Molecular Life Sciences, Radboud university medical center, Nijmegen, 6500 HB, the Netherlands
| | - Joost G J Hoenderop
- Department of Physiology (286), Radboud Institute for Molecular Life Sciences, Radboud university medical center, P. O. Box 9101, 6500 HB, Nijmegen, the Netherlands
| | - Jeroen H F de Baaij
- Department of Physiology (286), Radboud Institute for Molecular Life Sciences, Radboud university medical center, P. O. Box 9101, 6500 HB, Nijmegen, the Netherlands.
- Department of Physiology, Anatomy & Genetics, University of Oxford, Oxford, UK.
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Evaluation of lipid peroxidation and the level of some elements in rat erythrocytes during separate and combined vanadium and magnesium administration. Chem Biol Interact 2018; 293:1-10. [PMID: 30028963 DOI: 10.1016/j.cbi.2018.07.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 07/02/2018] [Accepted: 07/16/2018] [Indexed: 12/18/2022]
Abstract
The impact of vanadium (V) and magnesium (Mg) as sodium metavanadate (SMV, 0.125 mg V/ml) and magnesium sulfate (MS, 0.06 mg Mg/ml) on lipid peroxidation (LPO) and selected elements in the rat erythrocytes (RBCs) was investigated. Relationships between some indices determined in RBC were also studied. SMV alone (Group II) elevated the malondialdehyde level (MDARBC) (by 95% and 60%), compared with the control (Group I) and MS-supplemented rats (Group III), respectively, reduced the concentration of CuRBC (by 23.5%), in comparison with Group I, but did not change the levels of NaRBC, KRBC, and CaRBC, whereas MS alone (Group III) only reduced the CuRBC concentration (by 22%), compared with Group I. The SMV + MS combination (Group IV) reduced and elevated the CuRBC (by 24%) and CaRBC (by 111%) concentrations, respectively, in comparison with Groups I and III, and these changes were induced by the V-Mg antagonistic and synergistic interaction, respectively. The combined SMV + MS effect also enhanced the MDARBC level, compared with Groups I (by 79%) and III (by 47%) and slightly limited its concentration, compared with Group II, which, in turn, resulted from the distinct trend toward the V-Mg antagonistic interaction. We can conclude that V (as SMV) is able to stimulate LPO in rat RBCs and that V-Mg interactive effects are involved in changes in CuRBC, CaRBC, and MDARBC. Further studies are needed to elucidate the exact mechanisms of the V-Mg antagonistic/synergistic interactions and to provide insight into the biochemical mechanisms of changes in rats suffering from anemia [1], characterized by a disrupted antioxidant barrier in RBCs [2] and an intensified free radical process in these cells.
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Ścibior A, Gołębiowska D, Adamczyk A, Kurus J, Staniszewska M, Sadok I. Evaluation of lipid peroxidation and antioxidant defense mechanisms in the bone of rats in conditions of separate and combined administration of vanadium (V) and magnesium (Mg). Chem Biol Interact 2018; 284:112-125. [PMID: 29453945 DOI: 10.1016/j.cbi.2018.02.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 01/13/2018] [Accepted: 02/13/2018] [Indexed: 12/17/2022]
Abstract
The impact of vanadium (V) and magnesium (Mg) applied as sodium metavanadate (SMV, 0.125 mg V/ml) and magnesium sulfate (MS, 0.06 mg Mg/ml) on oxidative stress markers in bone of male Wistar rats was investigated. Some of them were also measured in the liver, e.g. l-ascorbic acid (hepatic L-AA). Additionally, relationships between selected indices determined in bone were examined. SMV alone (Group II) did not significantly alter the level of TBARS and the activity of SOD, compared with the control (Group I), but it slightly reduced the GR activity (by 13%) and the L-AA level (by 15.5%). It also markedly lowered the activity of CAT and GPx (by 34% and 29%), and to some degree elevated the activity of GST (by 16%) and the hepatic L-AA level (by 119%). MS alone (Group III) decreased the TBARS level (by 49%), slightly lowered the L-AA concentration (by 14%), and reduced the SOD, GPx, and GR activities (by 31%, 40%, and 28%), but did not change the activity of CAT, compared with the control. Additionally, it elevated the GST activity (by 56%) and the hepatic L-AA level (by 40%). In turn, the SMV + MS combination (Group IV) reduced the TBARS level (by 38%) and the SOD, CAT, GPx, and GR activities (by 61%, 58%, 72%, and 40%) but elevated the GST activity (by 66%), compared with the control. The activity of SOD and GPx in the rats in Group IV was also reduced, compared with Group II (by 61% and 61%) and Group III (by 44% and 54%). In turn, the activities of CAT and GR were decreased, compared with Group III (by 55%) and Group II (by 31%), and the L-AA level was lowered, in comparison with Groups II and III (by 53% and 54%). Further, the concentration of V in the bone of rats in Groups II and IV increased, whereas the concentration of Mg decreased, compared with Groups I and III, in which the V and Mg levels dropped and were not altered, respectively, compared with Group I. The total content of Fe in the bone of rats in Groups II and IV increased, compared with Group III, in which the total Fe content did not change, compared with Group I. In turn, the total bone Cu content significantly decreased in the rats in Groups III and IV, compared with Groups I and II, whereas the total Zn content and the Ca concentration did not change markedly. The results provided evidence that the concentration of V used as SMV did not enhance LPO in bone, whereas Mg, at the selected level, markedly reduced LPO in this tissue. On the other hand, both elements administered separately and in combination disrupted the antioxidant defense mechanisms and homeostasis of some metals in bone tissue, which consequently may have contributed to disturbances in the balance in the activities of osteoblastic and osteoclastic cells, and thereby negatively affected bone health.
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Affiliation(s)
- Agnieszka Ścibior
- Laboratory of Oxidative Stress, Centre for Interdisciplinary Research, The John Paul II Catholic University of Lublin, Konstantynów Ave. 1J, 20-708, Lublin, Poland.
| | - Dorota Gołębiowska
- Laboratory of Oxidative Stress, Centre for Interdisciplinary Research, The John Paul II Catholic University of Lublin, Konstantynów Ave. 1J, 20-708, Lublin, Poland
| | - Agnieszka Adamczyk
- Department of Zoology and Invertebrate Ecology, Laboratory of Physiology and Animal Biochemistry, The John Paul II Catholic University of Lublin, Kraśnicka Ave. 102, 20-718, Lublin, Poland
| | - Joanna Kurus
- Laboratory of Oxidative Stress, Centre for Interdisciplinary Research, The John Paul II Catholic University of Lublin, Konstantynów Ave. 1J, 20-708, Lublin, Poland
| | - Magdalena Staniszewska
- Laboratory of Separation and Spectroscopic Methods Applications, Centre for Interdisciplinary Research, The John Paul II Catholic University of Lublin, Konstantynów Ave. 1J, 20-708, Lublin, Poland
| | - Ilona Sadok
- Laboratory of Separation and Spectroscopic Methods Applications, Centre for Interdisciplinary Research, The John Paul II Catholic University of Lublin, Konstantynów Ave. 1J, 20-708, Lublin, Poland
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Rosique-Esteban N, Guasch-Ferré M, Hernández-Alonso P, Salas-Salvadó J. Dietary Magnesium and Cardiovascular Disease: A Review with Emphasis in Epidemiological Studies. Nutrients 2018; 10:nu10020168. [PMID: 29389872 PMCID: PMC5852744 DOI: 10.3390/nu10020168] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 01/24/2018] [Accepted: 01/24/2018] [Indexed: 12/15/2022] Open
Abstract
Magnesium (Mg) is an essential dietary element for humans involved in key biological processes. A growing body of evidence from epidemiological studies, randomized controlled trials (RCTs) and meta-analyses have indicated inverse associations between Mg intake and cardiovascular diseases (CVD). The present review aims to summarize recent scientific evidence on the topic, with a focus on data from epidemiological studies assessing the associations between Mg intake and major cardiovascular (CV) risk factors and CVD. We also aimed to review current literature on circulating Mg and CVD, as well as potential biological processes underlying these observations. We concluded that high Mg intake is associated with lower risk of major CV risk factors (mainly metabolic syndrome, diabetes and hypertension), stroke and total CVD. Higher levels of circulating Mg are associated with lower risk of CVD, mainly ischemic heart disease and coronary heart disease. Further, RCTs and prospective studies would help to clarify whether Mg intake and Mg circulating levels may also protect against other CVDs and CVD death.
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Affiliation(s)
- Nuria Rosique-Esteban
- Human Nutrition Unit, Department of Biochemistry and Biotechnology, Faculty of Medicine and Health Sciences, University Hospital of Sant Joan de Reus, Pere Virgili Institute for Health Research, Rovira i Virgili University, St/Sant Llorenç 21, 43201 Reus, Spain.
- CIBERobn Physiopathology of Obesity and Nutrition, Institute of Health Carlos III (ISCIII), 28029 Madrid, Spain.
| | - Marta Guasch-Ferré
- Human Nutrition Unit, Department of Biochemistry and Biotechnology, Faculty of Medicine and Health Sciences, University Hospital of Sant Joan de Reus, Pere Virgili Institute for Health Research, Rovira i Virgili University, St/Sant Llorenç 21, 43201 Reus, Spain.
- CIBERobn Physiopathology of Obesity and Nutrition, Institute of Health Carlos III (ISCIII), 28029 Madrid, Spain.
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA.
| | - Pablo Hernández-Alonso
- Human Nutrition Unit, Department of Biochemistry and Biotechnology, Faculty of Medicine and Health Sciences, University Hospital of Sant Joan de Reus, Pere Virgili Institute for Health Research, Rovira i Virgili University, St/Sant Llorenç 21, 43201 Reus, Spain.
- CIBERobn Physiopathology of Obesity and Nutrition, Institute of Health Carlos III (ISCIII), 28029 Madrid, Spain.
| | - Jordi Salas-Salvadó
- Human Nutrition Unit, Department of Biochemistry and Biotechnology, Faculty of Medicine and Health Sciences, University Hospital of Sant Joan de Reus, Pere Virgili Institute for Health Research, Rovira i Virgili University, St/Sant Llorenç 21, 43201 Reus, Spain.
- CIBERobn Physiopathology of Obesity and Nutrition, Institute of Health Carlos III (ISCIII), 28029 Madrid, Spain.
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Lee KS, Chun SY, Kwon YS, Kim S, Nam KS. Deep sea water improves hypercholesterolemia and hepatic lipid accumulation through the regulation of hepatic lipid metabolic gene expression. Mol Med Rep 2017; 15:2814-2822. [PMID: 28447751 DOI: 10.3892/mmr.2017.6317] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 01/06/2017] [Indexed: 11/06/2022] Open
Abstract
A high‑fat diet or high‑cholesterol diet (HCD) is a major cause of metabolic diseases, including obesity and diabetes; vascular diseases, including hypertension, stroke and arteriosclerosis; and liver diseases, including hepatic steatosis and cirrhosis. The present study aimed to evaluate the effects of deep sea water (DSW) on rats fed a HCD. DSW decreased HCD‑induced increases in total cholesterol and low‑density lipoprotein (LDL) cholesterol in the blood, and recovered high‑density lipoprotein cholesterol. In addition, DSW decreased levels of liver injury markers, which were increased in response to HCD, including glutamate‑oxaloacetate transaminase, glutamate‑pyruvate transferase and alkaline phosphatase. Lower lipid droplet levels were observed in the livers of rats fed a HCD and treated with DSW at a hardness of 1,500, as compared with those in the HCD only group. Semi‑quantitative reverse transcription‑polymerase chain reaction (RT‑PCR) revealed that mRNA expression levels of fatty acid synthase and sterol regulatory element binding protein‑1c (SREBP‑1c) in rats fed a HCD with DSW were lower compared with the HCD only group. Furthermore, quantitative RT‑PCR revealed that DSW enhanced LDL receptor (LDLR) mRNA expression in a hardness‑dependent manner. Combined, the results of the present study indicated that DSW may reduce HCD‑induced increases in blood and liver lipid levels, indicating that DSW may protect against hypercholesterolemia and non‑alcoholic hepatic steatosis. In addition, the present study demonstrated that DSW‑induced downregulation of lipids in the blood and hepatic lipid accumulation was mediated by enhancement of LDLR expression and suppression of fatty acid synthase and SREBP‑1c.
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Affiliation(s)
- Kyu-Shik Lee
- Department of Pharmacology and Intractable Disease Research Center, School of Medicine, Dongguk University, Gyeongju, Gyeongsangbuk‑do 38066, Republic of Korea
| | - So-Young Chun
- Department of Pharmacology and Intractable Disease Research Center, School of Medicine, Dongguk University, Gyeongju, Gyeongsangbuk‑do 38066, Republic of Korea
| | - Yun-Suk Kwon
- Department of Pharmacology and Intractable Disease Research Center, School of Medicine, Dongguk University, Gyeongju, Gyeongsangbuk‑do 38066, Republic of Korea
| | - Soyoung Kim
- Department of Pharmacology and Intractable Disease Research Center, School of Medicine, Dongguk University, Gyeongju, Gyeongsangbuk‑do 38066, Republic of Korea
| | - Kyung-Soo Nam
- Department of Pharmacology and Intractable Disease Research Center, School of Medicine, Dongguk University, Gyeongju, Gyeongsangbuk‑do 38066, Republic of Korea
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Lee KS, Kwon YS, Kim S, Moon DS, Kim HJ, Nam KS. Regulatory mechanism of mineral-balanced deep sea water on hypocholesterolemic effects in HepG2 hepatic cells. Biomed Pharmacother 2017; 86:405-413. [DOI: 10.1016/j.biopha.2016.12.046] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 12/01/2016] [Accepted: 12/08/2016] [Indexed: 10/20/2022] Open
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Pereira CD, Severo M, Rafael L, Martins MJ, Neves D. Effects of natural mineral-rich water consumption on the expression of sirtuin 1 and angiogenic factors in the erectile tissue of rats with fructose-induced metabolic syndrome. Asian J Androl 2015; 16:631-8. [PMID: 24625878 PMCID: PMC4104095 DOI: 10.4103/1008-682x.122869] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Consuming a high-fructose diet induces metabolic syndrome (MS)-like features, including endothelial dysfunction. Erectile dysfunction is an early manifestation of endothelial dysfunction and systemic vascular disease. Because mineral deficiency intensifies the deleterious effects of fructose consumption and mineral ingestion is protective against MS, we aimed to characterize the effects of 8 weeks of natural mineral-rich water consumption on the structural organization and expression of vascular growth factors and receptors on the corpus cavernosum (CC) in 10% fructose-fed Sprague-Dawley rats (FRUCT). Differences were not observed in the organization of the CC either on the expression of vascular endothelial growth factor (VEGF) or the components of the angiopoietins/Tie2 system. However, opposing expression patterns were observed for VEGF receptors (an increase and a decrease for VEGFR1 and VEGFR2, respectively) in FRUCT animals, with these patterns being strengthened by mineral-rich water ingestion. Mineral-rich water ingestion (FRUCTMIN) increased the proportion of smooth muscle cells compared with FRUCT rats and induced an upregulatory tendency of sirtuin 1 expression compared with the control and FRUCT groups. Western blot results were consistent with the dual immunofluorescence evaluation. Plasma oxidized low-density lipoprotein and plasma testosterone levels were similar among the experimental groups, although a tendency for an increase in the former was observed in the FRUCTMIN group. The mineral-rich water-treated rats presented changes similar to those observed in rats treated with MS-protective polyphenol-rich beverages or subjected to energy restriction, which led us to hypothesize that the effects of mineral-rich water consumption may be more vast than those directly observed in this study.
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Affiliation(s)
- Cidália D Pereira
- Department of Biochemistry, Faculty of Medicine, University of Porto, Portugal
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Ju SY, Choi WS, Ock SM, Kim CM, Kim DH. Dietary magnesium intake and metabolic syndrome in the adult population: dose-response meta-analysis and meta-regression. Nutrients 2014; 6:6005-19. [PMID: 25533010 PMCID: PMC4277012 DOI: 10.3390/nu6126005] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 12/02/2014] [Accepted: 12/08/2014] [Indexed: 12/11/2022] Open
Abstract
ncreasing evidence has suggested an association between dietary magnesium intake and metabolic syndrome. However, previous research examining dietary magnesium intake and metabolic syndrome has produced mixed results. Our objective was to determine the relationship between dietary magnesium intake and metabolic syndrome in the adult population using a dose-response meta-analysis. We searched the PubMed, Embase and the Cochrane Library databases from August, 1965, to May, 2014. Observational studies reporting risk ratios with 95% confidence intervals (CIs) for metabolic syndrome in ≥ 3 categories of dietary magnesium intake levels were selected. The data extraction was performed independently by two authors, and the quality of the studies was evaluated using the Risk of Bias Assessment Tool for Nonrandomized Studies (RoBANS). Based on eight cross-sectional studies and two prospective cohort studies, the pooled relative risks of metabolic syndrome per 150 mg/day increment in magnesium intake was 0.88 (95% CI, 0.84-0.93; I(2) = 36.3%). The meta-regression model showed a generally linear, inverse relationship between magnesium intake (mg/day) and metabolic syndrome. This dose-response meta-analysis indicates that dietary magnesium intake is significantly and inversely associated with the risk of metabolic syndrome. However, randomized clinical trials will be necessary to address the issue of causality and to determine whether magnesium supplementation is effective for the prevention of metabolic syndrome.
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Affiliation(s)
- Sang-Yhun Ju
- Department of Family Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 10, 63-ro, Yeongdeungpo-gu, Seoul 150-713, Korea.
| | - Whan-Seok Choi
- Department of Family Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 22 Banpo-daero, Seocho-gu, Seoul 137-701, Korea.
| | - Sun-Myeong Ock
- Department of Family Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 10, 63-ro, Yeongdeungpo-gu, Seoul 150-713, Korea.
| | - Chul-Min Kim
- Department of Family Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 22 Banpo-daero, Seocho-gu, Seoul 137-701, Korea.
| | - Do-Hoon Kim
- Department of Family Medicine, Korea University Ansan Hospital, 516, Gojan 1-Dong, Danwon-Gu, Ansan-Si Gyeonggi-Do 425-707, Korea.
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Yamori Y, Sagara M, Mizushima S, Liu L, Ikeda K, Nara Y. An inverse association between magnesium in 24-h urine and cardiovascular risk factors in middle-aged subjects in 50 CARDIAC Study populations. Hypertens Res 2014; 38:219-25. [PMID: 25354778 DOI: 10.1038/hr.2014.158] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 08/28/2014] [Accepted: 09/03/2014] [Indexed: 12/15/2022]
Abstract
Serum, plasma and dietary magnesium (Mg) have been reported to be inversely associated with cardiovascular disease risk factors. We examined the associations between the 24-h urinary Mg/creatinine (Cre) ratio and cardiovascular disease risk factors, such as body mass index (BMI), blood pressure (BP), serum total cholesterol (TC) and prevalence of obesity, hypertension and hypercholesterolemia. A cross-sectional analysis was conducted among 4211 participants (49.7% women) aged 48-56 years in 50 population samples from 22 countries in the World Health Organization-coordinated Cardiovascular Diseases and Alimentary Comparison (CARDIAC) Study (1985-1994). In linear regression analyses, Mg/Cre ratio was inversely associated with BMI, systolic BP (SBP), diastolic BP (DBP) and TC (P for linear trend <0.001 for each). These associations were not markedly altered by adjustment for traditional risk factors, urinary markers or cohort effects. Multivariate-adjusted mean values for the subjects in the highest Mg/Cre ratio quintile were 6.3, 3.4, 5.3 and 4.6% lower than those for the subjects in the lowest quintile for BMI, SBP, DBP and TC (P < 0.001, respectively). The prevalence of obesity, hypertension and hypercholesterolemia was 2.10 (95% confidence interval: 1.50, 2.95), 1.55 (1.25, 1.92) and 2.06 (1.63, 2.62) times higher (P < 0.001, respectively) among the subjects in the lowest Mg/Cre ratio quintile than in the subjects in the highest quintile. These associations were not appreciably altered by adjustment for potential confounding variables. In conclusion, higher 24-h urinary Mg/Cre ratio was associated with lower cardiovascular disease risk factors, including BMI, BP, TC, obesity, hypertension and hypercholesterolemia.
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Affiliation(s)
- Yukio Yamori
- 1] Institute for World Health Development, Mukogawa Women's University, Nishinomiya, Japan [2] Laboratory of Preventive Nutritional Medicine, Research Institute for Production Development, Kyoto, Japan [3] International (Former WHO-Collaborating) Center for Research on Primary Prevention of Cardiovascular Diseases, Kyoto, Japan
| | - Miki Sagara
- 1] Laboratory of Preventive Nutritional Medicine, Research Institute for Production Development, Kyoto, Japan [2] International (Former WHO-Collaborating) Center for Research on Primary Prevention of Cardiovascular Diseases, Kyoto, Japan
| | - Shunsaku Mizushima
- 1] International (Former WHO-Collaborating) Center for Research on Primary Prevention of Cardiovascular Diseases, Kyoto, Japan [2] Department of Epidemiology and Public Health, Yokohama City University Graduate School of Medicine, Kanagawa, Japan
| | - Longjian Liu
- 1] International (Former WHO-Collaborating) Center for Research on Primary Prevention of Cardiovascular Diseases, Kyoto, Japan [2] Department of Epidemiology and Biostatistics, Drexel University School of Public Health, Philadelphia, PA, USA
| | - Katsumi Ikeda
- 1] International (Former WHO-Collaborating) Center for Research on Primary Prevention of Cardiovascular Diseases, Kyoto, Japan [2] School of Pharmacy and Pharmaceutical Sciences, Mukogawa Women's University, Nishinomiya, Japan
| | - Yasuo Nara
- International (Former WHO-Collaborating) Center for Research on Primary Prevention of Cardiovascular Diseases, Kyoto, Japan
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Sheu MJ, Chou PY, Lin WH, Pan CH, Chien YC, Chung YL, Liu FC, Wu CH. Deep sea water modulates blood pressure and exhibits hypolipidemic effects via the AMPK-ACC pathway: an in vivo study. Mar Drugs 2013; 11:2183-202. [PMID: 23774889 PMCID: PMC3721228 DOI: 10.3390/md11062183] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 05/14/2013] [Accepted: 05/22/2013] [Indexed: 01/13/2023] Open
Abstract
Deep sea water (DSW), originally pumped from the Pacific Rim off the coast of Hualien County (Taiwan), and its mineral constituents, were concentrated by a low-temperature vacuum evaporation system to produce a hardness of approximately 400,000 mg/L of seawater mineral concentrate. The primary composition of this seawater mineral concentrate was ionic magnesium (Mg2+), which was approximately 96,000 mg/L. Referring to the human recommended daily allowance (RDA) of magnesium, we diluted the mineral concentrate to three different dosages: 0.1 × DSW (equivalent to 3.75 mg Mg2+/kg DSW); 1 × DSW (equivalent to 37.5 mg Mg2+/kg DSW); and 2 × DSW (equivalent to 75 mg Mg2+/kg DSW). Additionally, a magnesium chloride treatment was conducted for comparison with the DSW supplement. The study indicated that 0.1 × DSW, 1 × DSW and 2 × DSW decreased the systolic and diastolic pressures in spontaneous hypertensive rats in an eight-week experiment. DSW has been shown to reduce serum lipids and prevent atherogenesis in a hypercholesterolemic rabbit model. Our results demonstrated that 1 × DSW and 2 × DSW significantly suppressed the serum cholesterol levels, reduced the lipid accumulation in liver tissues, and limited aortic fatty streaks. These findings indicated that the antiatherogenic effects of DSW are associated with 5′-adenosine monophosphate-activated protein kinase (AMPK) stimulation and the consequent inhibition of phosphorylation of acetyl-CoA carboxylase (ACC) in atherosclerotic rabbits. We hypothesize that DSW could potentially be used as drinking water because it modulates blood pressure, reduces lipids, and prevents atherogenesis.
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Affiliation(s)
- Ming-Jyh Sheu
- School of Pharmacy, China Medical University, 91 Hsueh-Shih Road, Taichung 404, Taiwan; E-Mails: (W.-H.L.); (C.-H.P.); (Y.-C.C.); (Y.-L.C.)
- Authors to whom correspondence should be addressed; E-Mails: (M.-J.S.); (C.-H.W.); Tel.: +886-4-220-533-66 (ext. 5158) (M.-J.S.); +886-4-220-533-66 (ext. 5101) (C.-H.W.); Fax: +886-4-220-737-09
| | - Pei-Yu Chou
- Department of Nutrition, China Medical University, 91 Hsueh-Shih Road, Taichung 404, Taiwan; E-Mail:
| | - Wen-Hsin Lin
- School of Pharmacy, China Medical University, 91 Hsueh-Shih Road, Taichung 404, Taiwan; E-Mails: (W.-H.L.); (C.-H.P.); (Y.-C.C.); (Y.-L.C.)
| | - Chun-Hsu Pan
- School of Pharmacy, China Medical University, 91 Hsueh-Shih Road, Taichung 404, Taiwan; E-Mails: (W.-H.L.); (C.-H.P.); (Y.-C.C.); (Y.-L.C.)
| | - Yi-Chung Chien
- School of Pharmacy, China Medical University, 91 Hsueh-Shih Road, Taichung 404, Taiwan; E-Mails: (W.-H.L.); (C.-H.P.); (Y.-C.C.); (Y.-L.C.)
| | - Yun-Lung Chung
- School of Pharmacy, China Medical University, 91 Hsueh-Shih Road, Taichung 404, Taiwan; E-Mails: (W.-H.L.); (C.-H.P.); (Y.-C.C.); (Y.-L.C.)
| | - Fon-Chang Liu
- School of Pharmacy, China Medical University, 91 Hsueh-Shih Road, Taichung 404, Taiwan; E-Mails: (W.-H.L.); (C.-H.P.); (Y.-C.C.); (Y.-L.C.)
- Department of Pharmacy, Da-Chien General Hospital, Miaoli 36052, Taiwan; E-Mail:
| | - Chieh-Hsi Wu
- School of Pharmacy, China Medical University, 91 Hsueh-Shih Road, Taichung 404, Taiwan; E-Mails: (W.-H.L.); (C.-H.P.); (Y.-C.C.); (Y.-L.C.)
- Authors to whom correspondence should be addressed; E-Mails: (M.-J.S.); (C.-H.W.); Tel.: +886-4-220-533-66 (ext. 5158) (M.-J.S.); +886-4-220-533-66 (ext. 5101) (C.-H.W.); Fax: +886-4-220-737-09
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Marcus Y, Shefer G, Sasson K, Kohen F, Limor R, Pappo O, Nevo N, Biton I, Bach M, Berkutzki T, Fridkin M, Benayahu D, Shechter Y, Stern N. Angiotensin 1-7 as means to prevent the metabolic syndrome: lessons from the fructose-fed rat model. Diabetes 2013; 62:1121-30. [PMID: 23250359 PMCID: PMC3609575 DOI: 10.2337/db12-0792] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
We studied the effects of chronic angiotensin 1-7 (Ang 1-7) treatment in an experimental model of the metabolic syndrome, i.e., rats given high-fructose/low-magnesium diet (HFrD). Rats were fed on HFrD for 24 weeks with and without Ang 1-7 (576 µg/kg/day, s.c., Alzet pumps). After 6 months, Ang 1-7-treated animals had lower body weight (-9.5%), total fat mass (detected by magnetic resonance imaging), and serum triglycerides (-51%), improved glucose tolerance, and better insulin sensitivity. Similar metabolic effects were also evident, albeit in the absence of weight loss, in rats first exposed to HFrD for 5 months and then subjected to short-term (4 weeks) treatment with Ang 1-7. Six months of Ang 1-7 treatment were associated with lower plasma renin activity (-40%) and serum aldosterone (-48%), less hepatosteatatitis, and a reduction in epididymal adipocyte volume. The marked attenuation of macrophage infiltration in white adipose tissue (WAT) was associated with reduced levels of the pP65 protein in the epididymal fat tissue, suggesting less activation of the nuclear factor-κB (NFκB) pathway in Ang 1-7-treated rats. WAT from Ang 1-7-treated rats showed reduced NADPH-stimulated superoxide production. In single muscle fibers (myofibers) harvested and grown ex vivo for 10 days, myofibers from HFrD rats gave rise to 20% less myogenic cells than the Ang 1-7-treated rats. Fully developed adipocytes were present in most HFrD myofiber cultures but entirely absent in cultures from Ang 1-7-treated rats. In summary, Ang 1-7 had an ameliorating effect on insulin resistance, hypertriglyceridemia, fatty liver, obesity, adipositis, and myogenic and adipogenic differentiation in muscle tissue in the HFrD rats.
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Affiliation(s)
- Yonit Marcus
- Department of Biological Chemistry, Weizmann Institute of Science, Rehovot, Israel
- Institute of Endocrinology, Metabolism, and Hypertension, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Gabi Shefer
- Institute of Endocrinology, Metabolism, and Hypertension, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Keren Sasson
- Department of Biological Chemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Fortune Kohen
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Rona Limor
- Institute of Endocrinology, Metabolism, and Hypertension, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Orit Pappo
- Department of Pathology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Nava Nevo
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Inbal Biton
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Michal Bach
- Institute of Endocrinology, Metabolism, and Hypertension, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Tamara Berkutzki
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Matityahu Fridkin
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Dafna Benayahu
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yoram Shechter
- Department of Biological Chemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Naftali Stern
- Institute of Endocrinology, Metabolism, and Hypertension, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
- Corresponding author: Naftali Stern,
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Caffeic Acid Phenylethyl Amide Protects against the Metabolic Consequences in Diabetes Mellitus Induced by Diet and Streptozocin. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2012:984780. [PMID: 22778782 PMCID: PMC3388606 DOI: 10.1155/2012/984780] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 05/02/2012] [Accepted: 05/06/2012] [Indexed: 02/06/2023]
Abstract
Caffeic acid phenyl ester is distributed wildly in nature and has antidiabetic and cardiovascular protective effects. However, rapid decomposition by esterase leads to its low bioavailability in vivo. In this study, chronic metabolic and cardiovascular effects of oral caffeic acid phenylethyl amide, whose structure is similar to caffeic acid phenyl ester and resveratrol, were investigated in ICR mice. We found that caffeic acid phenylethyl amide protected against diet or streptozocin-induced metabolic changes increased coronary flow and decreased infarct size after global ischemia-reperfusion in Langendorff perfused heart. Further study indicated that at least two pathways might be involved in such beneficial effects: the induction of the antioxidant protein MnSOD and the decrease of the proinflammatory cytokine TNFα and NFκB in the liver. However, the detailed mechanisms of caffeic acid phenylethyl amide need further studies. In summary, this study demonstrated the protective potential of chronic treatment of caffeic acid phenylethyl amide against the metabolic consequences in diabetes mellitus.
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Olatunji L, Michael O, Adewumi F, Aiyegboyin I, Olatunji V. Combined estrogen–progestogen but not progestogen-only oral contraceptive alters glucose tolerance and plasma lipid profile in female rats. PATHOPHYSIOLOGY 2012; 19:29-34. [DOI: 10.1016/j.pathophys.2011.09.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Accepted: 08/30/2011] [Indexed: 10/17/2022] Open
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Scibior A, Zaporowska H. Effects of combined vanadate and magnesium treatment on erythrocyte antioxidant defence system in rats. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2010; 30:153-161. [PMID: 21787646 DOI: 10.1016/j.etap.2010.05.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Revised: 05/07/2010] [Accepted: 05/11/2010] [Indexed: 05/31/2023]
Abstract
The effect of vanadate and magnesium treatment on erythrocyte defence system was studied in outbred 2-month-old, albino male Wistar rats (14 rats/each group) which daily received: Group I (Control)-deionized water to drink; Group II-water solution of sodium metavanadate (NaVO(3); SMV) at a concentration of 0.125mgV/mL; Group III-water solution of magnesium sulfate (MgSO(4); MS) at a concentration of 0.06mgMg/mL, Group IV-water solution of SMV-MS at the same concentrations over a 12-week time. The fluid intake and the concentration of reduced glutathione (GSH) as well as the activity of Cu, Zn-superoxide dismutase (Cu, Zn-SOD), catalase (CAT) and glutathione reductase (GR) were significantly decreased in the rats receiving SMV alone (Group II) or in combination with MS (Group IV) compared with Groups I and III. The cellular glutathione peroxidase (cGSH-Px) activity was unchanged in all the treated groups. The activity of glutathione S-transferase (GST) fell in the animals in Group II, compared with the rats in Groups I, III and IV; whereas in the rats in Group III its activity was higher than in the control animals. These results showed that V (as SMV) consumed by the rats with drinking water at a dose of 12mgV/kg b.w./24h for 12 weeks may attenuate defence system in rats' erythrocytes (RBCs), which is probably a consequence of vanadium pro-oxidant potential. Therefore, reactive oxygen species (ROS) are suggested to be involved in the alterations in antioxidant defence system in these cells. Mg (as MS) at the dose ingested (6mgMg/kg b.w./24h) at co-exposure to SMV was not able to counteract its deleterious effect. The results also provide evidence that V-Mg interactions may be involved in the decrease of erythrocyte GR activity and Mg concentration in the plasma under concomitant treatment with both metals at the doses of 12.6mgV and 6mgMg/kg b.w./24h.
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Affiliation(s)
- Agnieszka Scibior
- Department of Cell Biology, Institute of Environmental Protection, John Paul II Catholic University of Lublin, Kraśnicka Ave 102, 20-718 Lublin, Poland
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New hypotheses for the health-protective mechanisms of whole-grain cereals: what is beyond fibre? Nutr Res Rev 2010; 23:65-134. [PMID: 20565994 DOI: 10.1017/s0954422410000041] [Citation(s) in RCA: 593] [Impact Index Per Article: 42.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Epidemiological studies have clearly shown that whole-grain cereals can protect against obesity, diabetes, CVD and cancers. The specific effects of food structure (increased satiety, reduced transit time and glycaemic response), fibre (improved faecal bulking and satiety, viscosity and SCFA production, and/or reduced glycaemic response) and Mg (better glycaemic homeostasis through increased insulin secretion), together with the antioxidant and anti-carcinogenic properties of numerous bioactive compounds, especially those in the bran and germ (minerals, trace elements, vitamins, carotenoids, polyphenols and alkylresorcinols), are today well-recognised mechanisms in this protection. Recent findings, the exhaustive listing of bioactive compounds found in whole-grain wheat, their content in whole-grain, bran and germ fractions and their estimated bioavailability, have led to new hypotheses. The involvement of polyphenols in cell signalling and gene regulation, and of sulfur compounds, lignin and phytic acid should be considered in antioxidant protection. Whole-grain wheat is also a rich source of methyl donors and lipotropes (methionine, betaine, choline, inositol and folates) that may be involved in cardiovascular and/or hepatic protection, lipid metabolism and DNA methylation. Potential protective effects of bound phenolic acids within the colon, of the B-complex vitamins on the nervous system and mental health, of oligosaccharides as prebiotics, of compounds associated with skeleton health, and of other compounds such as alpha-linolenic acid, policosanol, melatonin, phytosterols and para-aminobenzoic acid also deserve to be studied in more depth. Finally, benefits of nutrigenomics to study complex physiological effects of the 'whole-grain package', and the most promising ways for improving the nutritional quality of cereal products are discussed.
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Anti-diabetic effects of pumpkin and its components, trigonelline and nicotinic acid, on Goto-Kakizaki rats. Biosci Biotechnol Biochem 2009; 73:1033-41. [PMID: 19420712 DOI: 10.1271/bbb.80805] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The effects of a pumpkin paste concentrate and its components on oral glucose tolerance and serum lipid levels were determined in non-obese type 2 diabetic Goto-Kakizaki (GK) rats. In the oral glucose tolerance test, the pumpkin paste concentrate-fed group maintained a lower glucose level than the control group between 15 and 60 min. The compounds considered to be effective in improving glucose tolerance and contained in the methanol extract of the pumpkin in relatively abundant amounts were isolated and identified as trigonelline (TRG) and nicotinic acid (NA).Feeding a diet containing TRG and NA respectively improved and tended to improve glucose tolerance. The insulin level increased after 15 min in the TRG-fed GK rats and then gradually decreased over the next 120 min. In contrast, a gradual increase was seen in the insulin level over 120 min in the control GK rats not fed with TRG, suggesting that TRG could improve the insulin resistance. The serum and liver triglyceride (TG) levels in the TRG- and NA-fed GK rats were lower than those in the control GK rats. Lower activity of liver fatty acid synthase (FAS), and higher activity of liver carnitine palmitoyl transferase (CPT) and glucokinase (GLK) in the TRG- and NA-fed GK rats than in the control GK rats were observed. This suggests that the regulation of these enzyme activities by TRG and NA was closely related to the suppression of both TG accumulation and the progression of diabetes.
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Shi ZM, Hu XS, Yuan BJ, Gibson R, Dai Y, Garg M. Association between magnesium : iron intake ratio and diabetes in Chinese adults in Jiangsu Province. Diabet Med 2008; 25:1164-70. [PMID: 19046194 DOI: 10.1111/j.1464-5491.2008.02558.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND The intake of iron is positively related to the risk of diabetes, whilst magnesium intake is inversely related. However, it is unknown whether there is an interaction between dietary magnesium and iron expressed as a ratio and diabetes. METHODS This is a cross-sectional household survey carried out in 2002 in Jiangsu Province, China. A total of 2849 men and women aged >or = 20 years participated (participation rate 89.0%). Iron and magnesium intake was assessed by 3-day weighed food records. Fasting plasma glucose, serum ferritin and haemoglobin were measured. RESULTS The mean intake of iron and magnesium was 25 mg/day and 332 mg/day, respectively. The prevalence of diabetes was 3.0% in men and 2.6% in women. Magnesium intake was negatively associated with diabetes when adjusted for age and sex, but not in a fully adjusted model. A strong inverse association between magnesium : iron intake ratio and diabetes was observed. In the fully adjusted model, the odds ratios of diabetes across quartiles of magnesium : iron intake ratio were: 1.0, 0.63 [95% confidence interval 0.32-1.25], 0.36 (0.16-0.81) and 0.48 (0.20-1.14) (P for trend 0.038). There was an interaction between central obesity and magnesium : iron ratio. CONCLUSION Magnesium : iron intake ratio is an independent risk marker for diabetes in Chinese adults. As this is a cross-sectional study, we cannot establish any causal relationship.
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Affiliation(s)
- Z-M Shi
- Jiangsu Provincial Centre for Disease Control and Prevention, Nanjing, China.
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Joint association of magnesium and iron intake with anemia among Chinese adults. Nutrition 2008; 24:977-84. [DOI: 10.1016/j.nut.2008.05.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2008] [Revised: 04/28/2008] [Accepted: 05/09/2008] [Indexed: 01/14/2023]
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Gao Z, Leng S, Lu F, Xie M, Xu L, Wang K. Effect of berberine on expression of hepatocyte nuclear factor-4alpha in rats with fructose-induced insulin resistance. ACTA ACUST UNITED AC 2008; 28:261-5. [PMID: 18563319 DOI: 10.1007/s11596-008-0307-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2008] [Indexed: 12/22/2022]
Abstract
The effects of berberine on the expression of hepatocyte nuclear factor-4alpha (HNF-4alpha) in liver of rats with fructose-induced insulin resistance and the molecular mechanism of berberine preventing insulin resistance were investigated. The experimental animals were divided into two groups of 16 animals each. The control group received a control routine diet containing 60% carbohydrate, and the study group a high-fructose diet containing 60% fructose as the sole source of carbohydrate. At the end of 6 weeks these were each subdivided into two groups. One was administered with berberine [187.5 mg/(kg x d) in 5 g/L carboxymethyl cellulose] by intragastric intubation and the other group was treated with a vehicle (5 g/L carboxymethyl cellulose). The rats were fed on the same dietary regimen for the next 4 weeks. After the experimental period of 10 weeks, plasma glucose, insulin and triglyceride levels were measured. HOMA insulin resistance index (HOMA-IR) was assayed. Immunohistochemistry, semiquantitative RT-PCR and western blot were used to detect the expression of HNF-4alpha in liver. Compared with control diet, fructose feeding induced hyperinsulinemia, HOMA-IR and increased triglyceride (all P<0.01). Berberine prevented the rise in plasma insulin (P<0.01), HOMA-IR (P<0.01) and triglyceride (P<0.05) in the fructose-fed rats. No change in plasma glucose was seen among these groups. The mRNA and protein expression of HNF-4alpha was decreased in the fructose-fed rats, but berberine could promote its expression. It was concluded that berberine could prevent fructose-induced insulin resistance in rats possibly by promoting the expression HNF-4alpha in liver.
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Affiliation(s)
- Zhiqiang Gao
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
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Abstract
PURPOSE OF REVIEW This review summarizes the evidence for benefits of magnesium on metabolic abnormalities, inflammatory parameters, and cardiovascular risk factors and related-potential mechanisms. Controversy due to contrasting results in the literature is also discussed. RECENT FINDINGS Increased dietary magnesium intake confers protection against the incidence of diabetes, metabolic syndrome, hypertension, and cardiovascular disease. It ameliorates insulin resistance, serum lipid profiles, and lowers inflammation, endothelial dysfunction, oxidative stress, and platelet aggregability. Magnesium acts as a mild calcium antagonist on vascular smooth muscle tone, and on postreceptor insulin signaling; it is critically involved in energy metabolism, fatty acid synthesis, glucose utilization, ATPase functions, release of neurotransmitters, and endothelial cell function and secretion. Prospective studies, however, have found only a modest effect for dietary magnesium on incident pathologies. Furthermore, magnesium supplementation on glucose metabolism, blood lipid levels, and ischemic heart disease has given inconsistent results. SUMMARY There is strong biological plausibility for the direct impact of magnesium intake on metabolic and cardiovascular risk factors, but in-vivo magnesium deficiency might play only a modest role. Reverse causality, the strong association between magnesium and other beneficial nutrients, or the possibility that people who choose magnesium-rich foods are more health-conscious may be confounding factors.
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Affiliation(s)
- Simona Bo
- Department of Internal Medicine, University of Turin, Italy.
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