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Chen G, Wang Y, Li Y, Zhang L, Dong M. A novel hippocampus metabolite signature in diabetes mellitus rat model of diabetic encephalopathy. Metab Brain Dis 2020; 35:895-904. [PMID: 32367268 DOI: 10.1007/s11011-020-00541-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 01/30/2020] [Indexed: 12/30/2022]
Abstract
Diabetic encephalopathy (DE) is one of the chronic complications of diabetes. Even then, the molecular mechanism underlying DE remains unexplored. In this study, we have made an attempt to investigate the metabolic changes associated with the streptozocin (STZ)-induced cognitive dysfunction in the hippocampus of the rat model, a classical rodent model for DE, with the help of Gas Chromatography-Mass Spectrometry-based method. The STZ injections led to the rise of mean blood glucose levels in the diabetes mellitus (DM) group of rats as compared to the control (CON) group of rats throughout the experiment. However, we did not find any significant difference between the blood glucose levels of the DM & the CON groups of rats before the STZ injection. The results indicated a behavioral and morphological cognitive dysfunction in the DM groups of rats. The metabolomic investigation of these DE rats demonstrated a lower level of N-acetylaspartate and dihydroxyacetone phosphate accompanied by a higher level of homocysteine and glutamate as against the CON group of rats. The outcome of this study may unravel the underlying pathophysiological mechanism of DE. Also, the metabolomic data from this study may provide a platform for the development of DE biomarkers.
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Affiliation(s)
- Guanghui Chen
- Department of Pharmacy, Renmin Hospital of Wuhan University, Wuhan, 430071, China
| | - Yizhong Wang
- Xiangyang No.1 People' Hospital, Hubei University of Medicine, Xiangyang, 441000, China
| | - Yang Li
- Department of Pharmacy, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430071, China
| | - Lujun Zhang
- Department of Neurology, Renmin Hospital of Wuhan University, 430071, No.99, Zhang zhi dong Road, Wuchang District, Wuhan, Hubei Province, China
| | - Meixue Dong
- Department of Neurology, Renmin Hospital of Wuhan University, 430071, No.99, Zhang zhi dong Road, Wuchang District, Wuhan, Hubei Province, China.
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2
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Azizi S, Shamshirian A, Alizadeh-Navaei R, Jafarpour H, Asemi Z, Tamtaji OR, Vaziri MS, Homayounfar R, Rezaei Shahmirzadi A, Alipoor R. A Genetic Association Study of MTHFR C677T Polymorphism with Risk of Metabolic Syndrome: A Systematic Review and Meta-Analysis. Galen Med J 2019; 8:e1472. [PMID: 34466514 PMCID: PMC8343661 DOI: 10.31661/gmj.v8i0.1472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 01/23/2019] [Accepted: 02/08/2019] [Indexed: 02/05/2023] Open
Abstract
Methylenetetrahydrofolate reductase (MTHFR) is an enzyme that plays a crucial role as a methyl-group donor in demethylation of homocysteine. The aim of this systematic review and meta-analysis was to study the relationship between MTHFR gene polymorphism and metabolic syndrome (MS). We used search engines and databases such as Science Direct, Google Scholar, Embase, Cochrane Library, and PubMed to identify eligible studies up to 2018. The articles were studied based on keywords including MTHFR, mutation, variant, and polymorphism in combination with MS. Data was analyzed using Comprehensive Meta-Analysis version 2.2.064 software. After extracting the data from seven articles, the total number of subjects was 1280 in the patient group and 1374 in the control group. The odds ratio was estimated to be 1.078 for the allele model of T vs. C (95% confidence interval [CI]: 1.626-0.715), 1.157 for the allele model of CC vs. CT (95% CI: 0.829-1.615), 1.020 for the allele model of CT + TT vs. CC (95% CI: 1.611-0.646) and 0.799 for the allele model of TT vs. CC + CT (95% CI: 1.185- 0.539). As well, the results showed no statistically significant correlation between polymorphism genotypes of the MTHFR gene and MS (P<0.05). In general, this study showed that the presence of C677T polymorphism in the MTHFR gene has no effect on the incidence of MS.
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Affiliation(s)
- Soheil Azizi
- Department of Laboratory Sciences, Faculty of Paramedicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Amir Shamshirian
- Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran
| | - Reza Alizadeh-Navaei
- Gastrointestinal Cancer Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Hamed Jafarpour
- Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran
| | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Omid Reza Tamtaji
- Physiology Research Center, Kashan University of Medical Sciences, Kashan, Iran
| | - Mohammad Sadegh Vaziri
- Student Research Committee, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Reza Homayounfar
- Non-Communicable Disease Research Center, Fasa University of Medical Sciences, Fasa, Iran
| | | | - Reza Alipoor
- Student Research Committee, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
- Non-Communicable Disease Research Center, Fasa University of Medical Sciences, Fasa, Iran
- Correspondence to: Reza Alipoor, Student Research Committee, Fasa University of Medical Sciences, Fasa, Iran Telephone Number: +989174462124 Email Address:
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Giustarini D, Tazzari V, Bassanini I, Rossi R, Sparatore A. The new H 2S-releasing compound ACS94 exerts protective effects through the modulation of thiol homoeostasis. J Enzyme Inhib Med Chem 2018; 33:1392-1404. [PMID: 30173573 PMCID: PMC6127811 DOI: 10.1080/14756366.2018.1509211] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The synthesis of a new dithiolethione-cysteine ethyl ester hybrid, ACS94, its metabolites, and its effect on GSH levels in rat tissues and on the concentration of circulating H2S is described. ACS94 rapidly enters the cells, where it is metabolised to cysteine and the dithiolethione moiety ACS48. Experiments performed through the oral administration of ACS94 to healthy rats showed that it is capable of increasing the GSH levels in most of the analysed organs and the concentration of circulating H2S. Although the increase in GSH concentration was similar to that obtained by ACS48 and N-acetylcysteine ethyl ester, the H2S increase was long-lasting and more evident with respect to the parent molecules. Moreover, a decrease of homocysteine in several rat organs and in plasma was noted. This effect may represent a potential therapeutic use of ACS94, as hyperhomocysteinaemia is considered a risk factor for cardiovascular diseases. Lastly, ACS94 was more efficient than N-acetylcysteine in protecting the liver and kidneys against acute acetaminophen toxicity.
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Affiliation(s)
| | - Valerio Tazzari
- b Department of Pharmaceutical Sciences , Università degli Studi di Milano , Milan , Italy
| | - Ivan Bassanini
- b Department of Pharmaceutical Sciences , Università degli Studi di Milano , Milan , Italy
| | - Ranieri Rossi
- a Department of Life Sciences , University of Siena , Siena , Italy
| | - Anna Sparatore
- b Department of Pharmaceutical Sciences , Università degli Studi di Milano , Milan , Italy
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Yan MKW, Khalil H. Vitamin supplements in type 2 diabetes mellitus management: A review. Diabetes Metab Syndr 2017; 11 Suppl 2:S589-S595. [PMID: 28420574 DOI: 10.1016/j.dsx.2017.04.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 04/10/2017] [Indexed: 02/07/2023]
Abstract
Type 2 diabetes mellitus (T2DM) is a major public health challenge that affects countries across the world. The use of pharmacological therapy is often limited in some patients due to a loss of effect over time or development of adverse effects such as weight gain or hypoglycaemia. This has prompted searches into the role of non-pharmacological therapies in T2DM. The availability and use of vitamin supplements in developed countries have increased significantly and there is evidence that certain vitamins may have roles in the management of T2DM. This review examines the literature assessing the use of vitamins A, C, E, D, K and the B group vitamins (B1, B3, B7, B6, B9, B12) in the management of T2DM. No clear evidence supporting the beneficial role of any specific vitamin in the treatment of T2DM was found. Thus, it is recommended that until further studies are conducted to clarify the role of such vitamins in T2DM management, they should not be routinely recommended in clinical practice.
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Affiliation(s)
| | - Hanan Khalil
- School of Rural Health, Monash University, Victoria, Australia.
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Giustarini D, Fanti P, Sparatore A, Matteucci E, Rossi R. Anethole dithiolethione lowers the homocysteine and raises the glutathione levels in solid tissues and plasma of rats: a novel non-vitamin homocysteine-lowering agent. Biochem Pharmacol 2014; 89:246-54. [PMID: 24637238 DOI: 10.1016/j.bcp.2014.03.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Revised: 03/05/2014] [Accepted: 03/06/2014] [Indexed: 01/19/2023]
Abstract
High homocysteine (Hcys) levels are suspected to contribute to the pathogenesis of cardiovascular disease and of other chronic conditions. Failure of B vitamins to reduce the incidence of cardiovascular events while lowering the Hcys levels, has prompted the search for alternative treatments. We tested the ability of anethole dithiolethione (ADT) to lower the Hcys levels in rats and we explored possible underlying mechanisms. Parenteral administration of 10mg/kg ADT to normal rats for 3 days lowered the Hcys levels between 51.4% and 31.5% in kidneys, liver, testis and plasma. Concomitantly, glutathione (GSH) increased between 112% and 28% in kidneys, brain, liver and plasma whereas protein thiolation index decreased 30%. In hyperhomocysteinemic rats, the plasma Hcys levels dropped 70% following a single ip injection of 10mg/kg ADT, while they decreased 55% following oral administration of 2mg/kg/day ADT for one week. Significant additive effects occurred when sub-therapeutic doses of ADT and folic acid were used in combination. To test the possible mechanism(s) of these actions, we perfused isolated rat livers and kidneys with albumin-bound Hcys, the prevalent form of plasma Hcys, and physiological thiols and disulfides at different ratios. In both organ preparations, the elimination rate of albumin-bound Hcys was progressively faster as the amount of reduced thiols was increased in the perfusate. These findings indicate that ADT shifts the redox ratio of GSH and other thiols with their oxidized forms toward the reduced forms, thus favoring the dissociation of albumin-bound Hcys and its transfer to renal and hepatic cells for further processing.
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Affiliation(s)
- Daniela Giustarini
- Department of Life Sciences, Laboratory of Pharmacology and Toxicology, University of Siena, Via A. Moro 4, I-53100 Siena, Italy
| | - Paolo Fanti
- Division of Nephrology, Department of Medicine, The University of Texas Health Science Center San Antonio, San Antonio, TX 78229, USA; Audie L. Murphy VA Hospital, San Antonio, TX 78229, USA
| | - Anna Sparatore
- Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli, 25, 20133 Milano, Italy
| | - Elena Matteucci
- Department of Clinical and Experimental Medicine, University of Pisa, Via Roma 67, 56126 Pisa, Italy
| | - Ranieri Rossi
- Department of Life Sciences, Laboratory of Pharmacology and Toxicology, University of Siena, Via A. Moro 4, I-53100 Siena, Italy.
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6
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Abstract
High levels of homocysteine (Hcy), known as hyperhomocysteinmia (HHcy), are correlated with an increase in extracellular matrix remodelling (ECM) via the matrix metalloproteinases (MMPs) and plasminogen/plasmin system. This results in an increase deposition of collagen that leads to endothelial-myocyte (EM) and myocyte-myocyte (MM) uncoupling; the physiological consequences are a plethora of cardiovascular pathologies. Homocysteine-induced increase in intracellular and mitochondrial Ca(2+) plays an important role in increasing reactive oxygen species (ROS) within mitochondria and instigating mitophagy within the cell. This occurs via several Hcy-mitigated processes: agonizing N-methyl-d-aspartate receptor-1 (NMDA-R1), decreasing expression of peroxisome proliferator activator receptor (PPAR) [thereby increasing oxidation], impairing Ca(2+) handling via Na(+)/Ca(2+) exchanger (NCX1) and Sarco endoplasmic reticulum Ca(2+) ATPase (SERCA-2a). The end result is an increase in ROS that directly or indirectly lead to MMP activation within mitochondria or the cytoplasm. Hcy induces a mitochondrial permeability transition that allows MMPs to be released from mitochondria thereby metabolizing matrix and impairing cardiac function. Further work remains to be elucidated concerning the specific mitochondrial mitophagic mechanisms under which matrix metabolism and remodelling occurs. Moreover, the therapeutic implications of NMDA and PPAR ligands are some promise to patient.
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Affiliation(s)
- Thomas P Vacek
- Department of Physiology and Biophysics, School of Medicine, University of Louisville, Louisville, KY 40202, USA
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Zhou SS, Zhou YM, Li D, Lun YZ. Dietary methyl-consuming compounds and metabolic syndrome. Hypertens Res 2011; 34:1239-45. [PMID: 21814217 DOI: 10.1038/hr.2011.133] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The metabolic syndrome, a major risk factor for type 2 diabetes and cardiovascular disease, is a cluster of metabolic abnormalities including obesity, insulin resistance, hypertension and dyslipidemia. Although systemic oxidative stress and aberrant methylation status are known to have important roles in the development of metabolic syndrome, how they occur remains unclear. The metabolism of methyl-consuming compounds generates reactive oxygen species and consumes labile methyl groups; therefore, a chronic increase in the levels of methyl-consuming compounds in the body can induce not only oxidative stress and subsequent tissue injury, but also methyl-group pool depletion and subsequent aberrant methylation status. In the past few decades, the intake amount of methyl-consuming compounds has substantially increased primarily due to pollution, food additives, niacin fortification and high meat consumption. Thus, increased methyl consumers might have a causal role in the development and prevalence of metabolic syndrome and its related diseases. Moreover, factors that decrease the elimination/metabolism of methyl-consuming compounds and other xenobiotics (for example, sweat gland inactivity and decreased liver function) or increase the generation of endogenous methyl-consuming compounds (for example, mental stress-induced increase in catecholamine release) may accelerate the progression of metabolic syndrome. Based on current nutrition knowledge and the available evidence from epidemiological, ecological, clinical and laboratory studies on metabolic syndrome and its related diseases, this review outlines the relationship between methyl supply-consumption imbalance and metabolic syndrome, and proposes a novel mechanism for the pathogenesis and prevalence of metabolic syndrome and its related diseases.
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Affiliation(s)
- Shi-Sheng Zhou
- Department of Physiology, Medical College, Dalian University, Dalian, China.
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Hayden MR, Tyagi SC. Homocysteine and reactive oxygen species in metabolic syndrome, type 2 diabetes mellitus, and atheroscleropathy: the pleiotropic effects of folate supplementation. Nutr J 2004; 3:4. [PMID: 15134582 PMCID: PMC420478 DOI: 10.1186/1475-2891-3-4] [Citation(s) in RCA: 118] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2004] [Accepted: 05/10/2004] [Indexed: 01/20/2023] Open
Abstract
Homocysteine has emerged as a novel independent marker of risk for the development of cardiovascular disease over the past three decades. Additionally, there is a graded mortality risk associated with an elevated fasting plasma total homocysteine (tHcy). Metabolic syndrome (MS) and type 2 diabetes mellitus (T2DM) are now considered to be a strong coronary heart disease (CHD) risk enhancer and a CHD risk equivalent respectively. Hyperhomocysteinemia (HHcy) in patients with MS and T2DM would be expected to share a similar prevalence to the general population of five to seven percent and of even greater importance is: Declining glomerular filtration and overt diabetic nephropathy is a major determinant of tHcy elevation in MS and T2DM. There are multiple metabolic toxicities resulting in an excess of reactive oxygen species associated with MS, T2DM, and the accelerated atherosclerosis (atheroscleropathy). HHcy is associated with an increased risk of cardiovascular disease, and its individual role and how it interacts with the other multiple toxicities are presented. The water-soluble B vitamins (especially folate and cobalamin-vitamin B12) have been shown to lower HHcy. The absence of the cystathionine beta synthase enzyme in human vascular cells contributes to the importance of a dual role of folic acid in lowering tHcy through remethylation, as well as, its action of being an electron and hydrogen donor to the essential cofactor tetrahydrobiopterin. This folate shuttle facilitates the important recoupling of the uncoupled endothelial nitric oxide synthase enzyme reaction and may restore the synthesis of the omnipotent endothelial nitric oxide to the vasculature.
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Affiliation(s)
- Melvin R Hayden
- Department of Family and Community Medicine University of Missouri Columbia, Missouri PO BOX 1140 Lk. Rd. 5-87 Camdenton, Missouri 65020 USA
| | - Suresh C Tyagi
- Department of Physiology and Biophysics 500 South Preston Street University of Louisville Louisville, Kentucky 40292 USA
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