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Wang T, Liu L, Deng J, Jiang Y, Yan X, Liu W. Analysis of the mechanism of action of quercetin in the treatment of hyperlipidemia based on metabolomics and intestinal flora. Food Funct 2023; 14:2112-2127. [PMID: 36740912 DOI: 10.1039/d2fo03509j] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Hyperlipidemia (HLP) is one of the main factors leading to cardiovascular diseases. Quercetin (QUE) is a naturally occurring polyhydroxy flavonoid compound that has a wide range of pharmacological effects. However, the potential mechanism for treating HLP remains unclear. Thus, the study aimed to investigate the role of QUE in HLP development and its underlying mechanisms in HLP rats based on the analysis of gut microbiota and plasma metabolomics. Following the establishment of an HLP model in rats, QUE was orally administered. Plasma samples and fecal samples were collected from HLP rats for microbiome 16S rDNA sequencing and metabolic UPLC-Q-Exactive-MS analysis. The results suggested that QUE could regulate dyslipidemia and inhibit the levels of TC, TG, and LDL-c. Additionally, histopathological findings revealed that QUE could reduce lipid deposition, ameliorate hepatic injury and steatosis in HFD-induced rats, and have a protective effect on the liver. The analysis and identification of plasma metabolomics showed that the intervention effect of QUE on HLP rats was related to 60 differential metabolites and signal pathways such as lactosamine, 11b-hydroxyprogesterone, arachidonic acid, glycerophospholipid, sphingolipid, glycerolipid, and linoleic acid metabolism. Combined with fecal microbiological analysis, it was found that QUE could significantly change the composition of intestinal flora in HLP rats, increase beneficial bacteria, and reduce the composition of harmful bacteria, attenuating the Firmicutes/Bacteroidetes ratio. The results of correlation analysis showed that the relative abundance level of Firmicutes, Deironobacterium, Fusobacterium, Bacteroides, and Escherichia coli was closely related to the change of differential metabolites. In summary, combined with metabolomics and gut microbiota studies, it is found that QUE can reduce lipid levels and improve liver function. The potential mechanism may be the regulation of metabolism and intestinal flora that play a role in reducing lipid levels, to achieve the purpose of treatment of HLP.
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Affiliation(s)
- Tongtong Wang
- Department of Pharmacy, Hunan Provincial People's Hospital (The First Affiliate Hospital of Hunan Normal University), Changsha, Hunan, 410000, P. R. China.
| | - Ling Liu
- Department of Pharmacy, Hunan Provincial People's Hospital (The First Affiliate Hospital of Hunan Normal University), Changsha, Hunan, 410000, P. R. China.
| | - Jun Deng
- Department of Pharmacy, Hunan Provincial People's Hospital (The First Affiliate Hospital of Hunan Normal University), Changsha, Hunan, 410000, P. R. China.
| | - Yu Jiang
- Hunan Provincial Key Laboratory of Emergency and Critical Care Metabolomics, Changsha, Hunan, 410000, P. R. China
| | - Xiao Yan
- Department of Pharmacy, Hunan Provincial People's Hospital (The First Affiliate Hospital of Hunan Normal University), Changsha, Hunan, 410000, P. R. China.
| | - Wen Liu
- Department of Pharmacy, Hunan Provincial People's Hospital (The First Affiliate Hospital of Hunan Normal University), Changsha, Hunan, 410000, P. R. China.
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Miguita R, Matsumoto AK, Michelin AP, Morelli NR, Baltus THL, Delfino VDA, Barbosa DS. Effect of Dialyzer Reuse on the Activity of Paraoxonase 1 in Patients on Hemodialysis. Indian J Nephrol 2022; 32:606-610. [PMID: 36704581 PMCID: PMC9872931 DOI: 10.4103/ijn.ijn_77_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 07/08/2022] [Indexed: 11/23/2022] Open
Abstract
Background Cardiovascular disease is the major cause of mortality in patients undergoing chronic hemodialysis treatment. The oxidative modification of low-density lipoprotein is a crucial step in the pathogenesis of atherosclerosis. Paraoxonase 1 (PON1) is the protein responsible for most of the antioxidant activity of high-density lipoprotein, and its reduced levels are associated with more cardiovascular events in several populations. In hemodialysis patients, reduced PON1 activity has been shown to be associated with increased cardiovascular mortality. Studies have shown that after the hemodialysis session, the activity of PON1 increases. The influence of dialyzer reuse on the activity of PON1 is unknown. We aimed to evaluate the effect of the reuse of two types of dialyzers (polynephron and polyethersulfone) on the PON1 activity of hemodialysis patients. Subjects and Methods A total of 30 patients on hemodialysis were included. Pre- and post-dialysis blood samples were collected to analyze the activity of PON1 in thefirst use of the dialyzer and in the hemodialysis session of its sixth reuse. This process was carried out with polynephron (bisphenol-free) and polyethersulfone dialyzers. Results We found that post-dialysis PON1 activity was significantly higher than pre-dialysis activity in both thefirst use and sixth reuse (P < 0.001). Conclusion The practice of reusing the dialyzer did not interfere with the improvement of PON1 activity after the hemodialysis session.
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Affiliation(s)
- Reynaldo Miguita
- Department of Clinical Medicine, Post-Graduation Program in Health Sciences, Londrina State University (UEL), Paraná, Brazil
| | - Andressa K. Matsumoto
- Department of Clinical Medicine, Post-Graduation Program in Health Sciences, Londrina State University (UEL), Paraná, Brazil
| | - Ana P. Michelin
- Department of Pathology, Clinical and Toxicological Analysis, Londrina State University (UEL), Paraná, Brazil
| | - Nayara R. Morelli
- Department of Pathology, Clinical and Toxicological Analysis, Londrina State University (UEL), Paraná, Brazil
| | - Thiago H. L. Baltus
- Department of Pathology, Clinical and Toxicological Analysis, Londrina State University (UEL), Paraná, Brazil
| | - Vinicius D. A. Delfino
- Department of Clinical Medicine, Discipline of Nephrology, Londrina State University (UEL), Paraná,
| | - Décio S. Barbosa
- Department of Pathology, Clinical and Toxicological Analysis, Londrina State University (UEL), Paraná, Brazil
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Zuin M, Trentini A, Marsillach J, D'Amuri A, Bosi C, Roncon L, Passaro A, Zuliani G, Mackness M, Cervellati C. Paraoxonase-1 (PON-1) Arylesterase Activity Levels in Patients with Coronary Artery Disease: A Meta-Analysis. DISEASE MARKERS 2022; 2022:4264314. [PMID: 35308142 PMCID: PMC8930235 DOI: 10.1155/2022/4264314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 02/15/2022] [Indexed: 12/07/2022]
Abstract
Aim To review and compare the PON-1 arylesterase activity between coronary artery disease (CAD) and non-CAD patients. Methods Data were obtained by searching MEDLINE and Scopus for all investigations published between January 1, 2000 and March 1, 2021 comparing PON-1 arylesterase activity between CAD and controls. Results Twenty studies, based on 5417 patients, met the inclusion criteria and were included in the analysis. A random effect model revealed that PON-1 arylesterase activity was significantly lower in the CAD group compared to controls (SMD = -0.587, 95%CI = -0.776 to -0.339, p < 0.0001, I 2 = 92.3%). In CAD patients, the PON-1 arylesterase activity was significantly higher among CAD patients without diabetes mellitus (DM) compared to those with diabetes (SMD: 0.235, 95% CI: 0.014 to 0.456, p = 0.03, I 2 = 0%). Conclusions PON-1 activity is significantly lower in CAD patients, and those without DM presented a significantly higher PON-1 arylesterase activity.
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Affiliation(s)
- Marco Zuin
- Department of Translational Medicine and for Romagna, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy
| | - Alessandro Trentini
- Department of Environmental and Prevention Sciences, University of Ferrara, Via Luigi Borsari 46, 44121, Italy
| | - Judit Marsillach
- Medicine (Division of Medical Genetics), University of Washington, Health Sciences Building, Seattle, WA 98195-7720, USA
| | - Andrea D'Amuri
- Department of Translational Medicine and for Romagna, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy
- Medical Department, University Hospital of Ferrara Arcispedale Sant'Anna, Via Aldo Moro 8, 44124 Ferrara, Italy
| | - Cristina Bosi
- Department of Translational Medicine and for Romagna, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy
| | - Loris Roncon
- Department of Cardiology, Santa Maria della Misericordia Hospital, Viale Tre Martiri 140, 45100 Rovigo, Italy
| | - Angelina Passaro
- Department of Translational Medicine and for Romagna, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy
- Medical Department, University Hospital of Ferrara Arcispedale Sant'Anna, Via Aldo Moro 8, 44124 Ferrara, Italy
- Research and Innovation Section, University Hospital of Ferrara Arcispedale Sant'Anna, Via Aldo Moro 8, 44124 Ferrara, Italy
| | - Giovanni Zuliani
- Department of Translational Medicine and for Romagna, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy
- Medical Department, University Hospital of Ferrara Arcispedale Sant'Anna, Via Aldo Moro 8, 44124 Ferrara, Italy
| | - Mike Mackness
- Avenida Principe De' Espanya, Miami Platja 43892, Tarragona, Spain
| | - Carlo Cervellati
- Department of Translational Medicine and for Romagna, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy
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Stadler JT, Marsche G. Dietary Strategies to Improve Cardiovascular Health: Focus on Increasing High-Density Lipoprotein Functionality. Front Nutr 2021; 8:761170. [PMID: 34881279 PMCID: PMC8646038 DOI: 10.3389/fnut.2021.761170] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 10/28/2021] [Indexed: 12/12/2022] Open
Abstract
Cardiovascular disease is one of the leading causes of morbidity and mortality worldwide, with increasing incidence. A cornerstone of cardiovascular disease prevention is lifestyle modification through dietary changes to influence various risk factors such as obesity, hypertension and diabetes. The effects of diet on cardiovascular health are complex. Some dietary components and metabolites directly affect the composition and structure of high-density lipoproteins (HDL) and increase anti-inflammatory and vasoprotective properties. HDLs are composed of distinct subpopulations of particles of varying size and composition that have several dynamic and context-dependent functions. The identification of potential dietary components that improve HDL functionality is currently an important research goal. One of the best-studied diets for cardiovascular health is the Mediterranean diet, consisting of fish, olive oil, fruits, vegetables, whole grains, legumes/nuts, and moderate consumption of alcohol, most commonly red wine. The Mediterranean diet, especially when supplemented with extra virgin olive oil rich in phenolic compounds, has been shown to markedly improve metrics of HDL functionality and reduce the burden, or even prevent the development of cardiovascular disease. Particularly, the phenolic compounds of extra virgin olive oil seem to exert the significant positive effects on HDL function. Moreover, supplementation of anthocyanins as well as antioxidants such as lycopene or the omega-3 fatty acid eicosapentaenoic acid improve parameters of HDL function. In this review, we aim to highlight recent discoveries on beneficial dietary patterns as well as nutritional components and their effects on cardiovascular health, focusing on HDL function.
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Affiliation(s)
- Julia T. Stadler
- Division of Pharmacology, Otto Loewi Research Center, Medical University of Graz, Graz, Austria
| | - Gunther Marsche
- Division of Pharmacology, Otto Loewi Research Center, Medical University of Graz, Graz, Austria
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Sharma AR, Patagi S, Uk AR, Shetty R, Umakanth S, Satyamoorthy K, Rai PS. MirSNPs in clopidogrel metabolism genes predict cardiovascular disease risk: a case-control study and meta-analysis. Pharmacogenomics 2020; 22:99-113. [PMID: 33356544 DOI: 10.2217/pgs-2020-0110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: The present study was conducted to decipher the inter-relationship of SNPs and miRNAs involved in pharmacogenomics of clopidogrel on predisposition to cardiovascular diseases (CVDs). Materials & methods: A case-control study was conducted on 410 cases and 386 controls to analyze the association of 13 mirSNPs on CVDs risk. Genotyping was performed by tetra-primer amplification refractory mutation system PCR and validated using Sanger DNA sequencing. miRNA expression analysis was performed using TaqMan assays. A meta-analysis was performed for PON1 rs662 with coronary artery disease. Results & conclusion: PON1 rs662, PON1 rs3917577, CYP3A5 rs15524, COL4A1 rs874204 and PTGIR rs1126510 polymorphisms showed association with CVDs. The miRNA hsa-miR-224-5p showed differential expression in the PON1 rs3917577 GG genotype. The meta-analysis showed the population-specific impact of PON1 rs662 on South Asian and Middle East populations.
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Affiliation(s)
- Anu Radha Sharma
- Department of Biotechnology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Sourav Patagi
- Department of Biotechnology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Abdul Razak Uk
- Department of Cardiology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Ranjan Shetty
- Department of Cardiology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Shashikiran Umakanth
- Department of Medicine, Dr. T.M.A. Pai Rotary Hospital, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Kapaettu Satyamoorthy
- Department of Cell & Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Padmalatha S Rai
- Department of Biotechnology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
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Association of Paraoxonase1 enzyme and its genetic single nucleotide polymorphisms with cardio-metabolic and neurodegenerative diseases. GENE REPORTS 2020. [DOI: 10.1016/j.genrep.2020.100775] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Ponce-Ruiz N, Murillo-González FE, Rojas-García AE, Barrón-Vivanco BS, Bernal-Hernández YY, González-Arias CA, Ortega-Cervantes L, Ponce-Gallegos J, López-Guarnido O, Medina-Díaz IM. PON1 status and homocysteine levels as potential biomarkers for cardiovascular disease. Exp Gerontol 2020; 140:111062. [PMID: 32827712 DOI: 10.1016/j.exger.2020.111062] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 07/24/2020] [Accepted: 08/16/2020] [Indexed: 11/17/2022]
Abstract
BACKGROUND Cardiovascular disease (CVD) is the leading cause of death. The mainly risks factors for CVD are diabetes, hypertension and high levels of homocysteine (Hcys), among others. Paraoxonase 1 (PON1) has been proposed as an antiatherogenic target for its ability to hydrolyzing oxi-Low-Density-Lipoproteins (LDL) and Hcys-thiolactone. Thus, the aim of the present study was to evaluate the association of Hcys levels, and the activities and concentration of PON1, as well as vitamin B from the diet with a risk for CVD. METHODS A case-control study was carry out in patients with cardiovascular diseases (CVD), Arterial hypertension, but not CVD (AH), and in healthy controls (control group) from the Mexican Institute of Social Security. Lipid profile, intake of vitamin B, Hcys, serum amyloid A (SAA), PON1 concentration, and PON1 activities (Arylesterase activity (ARE), Lactonase activity (LAC), and CMPA activity (CMPA)) were evaluated. RESULTS The CVD group had the highest concentration of Hcys and SAA than in the AH and control groups (p < 0.01). ARE, LAC, and CMPA activities and PON1 concentration were lowest in the CVD group. A positive-independent association between Hcys levels and CVD was found (OR = 2.09; 95% CI: 1.69-2.56) and this increase when it was adjusted by age, BMI, ApoA1, vitamin B intake, SAA, and PON1 (OR = 14.41; 95% CI: 1.75-118.71). LAC and CMPA, as well as PON1 concentration, were inversely associated with CVD. CONCLUSION LAC activity, PON1 concentration, and Hcys levels might be good biomarkers for CVD and their association could be modified by the intake of vitamin B.
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Affiliation(s)
- N Ponce-Ruiz
- Universidad Autónoma de Nayarit, Laboratorio de Contaminación y Toxicología, Secretaría de Investigación y Posgrado, Nayarit, Mexico; Posgrado en Ciencias Biológico Agropecuarias, Universidad Autónoma de Nayarit, Tepic, Nayarit, Mexico
| | - F E Murillo-González
- Universidad Autónoma de Nayarit, Laboratorio de Contaminación y Toxicología, Secretaría de Investigación y Posgrado, Nayarit, Mexico; Posgrado en Ciencias Biológico Agropecuarias, Universidad Autónoma de Nayarit, Tepic, Nayarit, Mexico
| | - A E Rojas-García
- Universidad Autónoma de Nayarit, Laboratorio de Contaminación y Toxicología, Secretaría de Investigación y Posgrado, Nayarit, Mexico
| | - B S Barrón-Vivanco
- Universidad Autónoma de Nayarit, Laboratorio de Contaminación y Toxicología, Secretaría de Investigación y Posgrado, Nayarit, Mexico
| | - Y Y Bernal-Hernández
- Universidad Autónoma de Nayarit, Laboratorio de Contaminación y Toxicología, Secretaría de Investigación y Posgrado, Nayarit, Mexico
| | - C A González-Arias
- Universidad Autónoma de Nayarit, Laboratorio de Contaminación y Toxicología, Secretaría de Investigación y Posgrado, Nayarit, Mexico.
| | - L Ortega-Cervantes
- Universidad Autónoma de Nayarit, Laboratorio de Contaminación y Toxicología, Secretaría de Investigación y Posgrado, Nayarit, Mexico
| | | | - O López-Guarnido
- Dept. Legal Medicine and Toxicology, University of Granada School of Medicine, Spain.
| | - I M Medina-Díaz
- Universidad Autónoma de Nayarit, Laboratorio de Contaminación y Toxicología, Secretaría de Investigación y Posgrado, Nayarit, Mexico.
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Tabatabaie M, Abdollahi S, Salehi-Abargouei A, Clark CCT, Karimi-Nazari E, Fallahzadeh H, Rahmanian M, Mozaffari-Khosravi H. The effect of resveratrol supplementation on serum levels of asymmetric de-methyl-arginine and paraoxonase 1 activity in patients with type 2 diabetes: A randomized, double-blind controlled trial. Phytother Res 2020; 34:2023-2031. [PMID: 32144833 DOI: 10.1002/ptr.6655] [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] [Received: 12/02/2019] [Revised: 01/15/2020] [Accepted: 02/16/2020] [Indexed: 12/16/2022]
Abstract
The present study sought to investigate the effect of micronized resveratrol supplementation on serum levels of asymmetric de-methyl-arginine (ADMA) and paraoxonase-1 (PON1) activity in patients with type 2 diabetes (T2D). In this double-blinded randomized trial, 76 patients with T2D were recruited. Participants were randomly assigned to consume 1,000 mg resveratrol or placebo capsules (methylcellulose) per day, for 8 weeks. Serum levels of ADMA and PON1 enzyme activity were measured at the beginning and end of the intervention using the enzyme-linked immunosorbent assay method. In total, 71 participants completed the study. Our results showed that resveratrol significantly decreased serum levels of ADMA (-0.16 ± 0.11, p < .001) and improved PON1 enzyme activity (15.39 ± 13.99, p < .001) compared with placebo, after adjusting for confounding factors (age, sex, and baseline body mass index). Our findings suggest that 8-week resveratrol supplementation may produce beneficial effects on serum levels of ADMA and PON1 enzyme activity in patients with T2DM. However, further research is needed to confirm the veracity of these results.
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Affiliation(s)
- Mahtab Tabatabaie
- Department of Nutrition, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,Nutrition and Food Security Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Shima Abdollahi
- Department of Nutrition and Public Health, School of Public Health, North Khorasan University, Bojnurd, Iran
| | - Amin Salehi-Abargouei
- Department of Nutrition, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,Nutrition and Food Security Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Cain C T Clark
- Centre for Sport, Exercise, and Life Sciences, Coventry University, Coventry, UK
| | - Elham Karimi-Nazari
- Nutrition and Food Security Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Hossein Fallahzadeh
- Department of Biostatistics and Epidemiology, Research Center of Prevention and Epidemiology of Non-Communicable Disease, School of Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Masoud Rahmanian
- Yazd Diabetic Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Hassan Mozaffari-Khosravi
- Department of Nutrition, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,Yazd Diabetic Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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Yuan M, Wang B, Tan S. Mecobalamin and early functional outcomes of ischemic stroke patients with H-type hypertension. ACTA ACUST UNITED AC 2018; 64:428-432. [PMID: 30304141 DOI: 10.1590/1806-9282.64.05.428] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 08/05/2017] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To analyze the effect of mecobalamin on the early-functional outcomes of patients with ischemic stroke and H-type hypertension. METHODS From October of 2014 to October of 2016, 224 cases of ischemic stroke and H-type hypertension were selected. The patients were randomly divided into treatment control groups, with 112 patients in each group. The control group was treated with the conventional therapy. The observation group was treated with 500 µg of mecobalamin three times a day in addition to the conventional therapy. We compared serum homocysteine (Hcy), hs-CRP levels, carotid plaques, and NIHSS scores between the two groups on the 2nd day and at 4 weeks, 8 weeks, 3 months, and 6 months. RESULTS After 4 weeks, 8 weeks, 3 months and 6 months, the difference of serum Hcy level between the two groups was statistically significant (t = 4.049, 3.896, 6.052, 6.159, respectively. All P <0.05). After the treatment, at 4 weeks, 8 weeks, 3 months and 6 months, the levels of hs-CRP in the treatment group were significantly lower than those in the control group (t = 37.249, 28.376, 26.454, 20.522, respectively. All P <0.01). After 3 months and 6 months, the carotid artery plaques were significantly reduced in the treatment group compared to those in the control group (t = 2.309 and 2.434. All P <0.05). After 3 months and 6 months, the NIHSS score was significantly higher in the treatment group compared to those in the control group (t = 2.455 and 2.193. All P <0.05). CONCLUSION Mecobalamin can reduce the level of plasma homocysteine, then lead to reductions of levels of plasma inflammatory factors and volume of carotid artery plaques, resulting in more significant functional recovery.
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Affiliation(s)
- Meixia Yuan
- Department of gerontology, shanghai sixth people's hospital affiliated to Shanghai Jiao Tong University, Shanghai China
| | - Beiyun Wang
- Department of gerontology, shanghai sixth people's hospital affiliated to Shanghai Jiao Tong University, Shanghai China
| | - Shijin Tan
- Department of gerontology, shanghai sixth people's hospital affiliated to Shanghai Jiao Tong University, Shanghai China
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Paraoxonase 1 Gene L55M Polymorphism and Paraoxonase 1 Activity in Obstructive Sleep Apnea Patients. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1150:17-24. [PMID: 30244352 DOI: 10.1007/5584_2018_267] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The antioxidant enzyme paraoxonase-1 (PON1) may limit oxidative stress in the development of cardiovascular diseases (CVD) and obstructive sleep apnea (OSA). The aim of the study was to determine PON1 gene L55M polymorphism in OSA-positive and OSA-negative subjects, along with paraoxonase activity of the enzyme (PON1-act). Caucasians aged 25-75, with BMI 19.0-53.0 kg/m2 and no acute or severe chronic disorder underwent polysomnography, and OSA-negative (n = 44) and OSA-positive (n = 57) groups were established. The following parameters were assessed: arterial blood pressure and serum glucose, lipids, C-reactive protein, and homocysteine. Genomic DNA was extracted and amplified, and automatic sequencing was used to confirm the LL, LM, MM genotypes. PON1-act was measured spectrophotometrically using paraoxon as a substrate. We found that frequency of polymorphisms differed significantly between the OSA-negative and OSA-positive patients (p < 0.05). Increased PON1-act was observed in the LL-genotype versus the LM + MM-genotype in the study population (p < 0.05). PON1-act was higher in the OSA-negative compared with OSA-positive patients (p < 0.001); in general and in the subgroups presenting the LL or LM genotype. In addition, there was an inverse relationship between PON1-act and LDL-cholesterol in the entire study population. The OSA-positive group presented an inverse relationship between PON1-act and fasting glucose. We conclude that patients could benefit from the LL genotype related with higher activity of PON1. OSA pathology might decrease the enzyme activity, despite the presence of L allele.
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Masud R, Baqai HZ. The communal relation ofMTHFR,MTR,ACEgene polymorphisms and hyperhomocysteinemia as conceivable risk of coronary artery disease. Appl Physiol Nutr Metab 2017; 42:1009-1014. [DOI: 10.1139/apnm-2017-0030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Homocysteine and its modulating genes have strongly emerged as novel biomarkers for coronary artery disease (CAD). In the present study, we investigated whether polymorphisms in homocysteine pathway genes and the plasma levels of homocysteine, folate, and vitamin B12, independently or in combination, are associated with CAD risk. A total of 504 participants were recruited (cases, n = 254; controls, n = 250, respectively). Tetra primer allele refractory mutation system polymerase chain reaction (PCR) was used for resolving the genotypes of 5′10′ methylenetetrahydrofolate reductase ‘MTHFR’ polymorphisms (rs1801133, rs1801131), 5′ methyl tetrahydrofolate homocysteine methyltransferase ‘MTR’ polymorphism (rs1805087), paroxanse1 ‘PON1’ polymorphism (rs662), and cystathionine beta synthase ‘CBS’ polymorphism (rs5742905). Conventional PCR amplification was carried out for resolving angiotensin converting enzyme ‘ACE’ insertion/deletion (I/D) polymorphism (rs4646994). ANOVA analysis, adjusted for the covariates, revealed that rs1801133, rs1805087 polymorphisms and homocysteine levels were associated with CAD. Logistic regression analysis (adjusted) revealed similar findings. Logistic regression analysis after applying factorial design to the studied single nucleotide polymorphisms (SNPs) revealed that homocysteine levels and heterozygous and mutant alleles at rs1801133, rs1805087, along with mutant alleles at rs1801131, rs4646994, conferred higher risk for CAD. Our results provide insight into the multifactorial nature of coronary artery disease. We highlight that SNPs in folate pathway genes and homocysteine have role in disease causation and can be used in disease prediction strategies.
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Affiliation(s)
- Rizwan Masud
- Division of Physiology, Department of Biomedical Sciences, College of Medicine, King Faisal University, Al Ahsa, 31982, Saudi Arabia
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Hernández-Díaz Y, Tovilla-Zárate CA, Juárez-Rojop IE, González-Castro TB, Rodríguez-Pérez C, López-Narváez ML, Rodríguez-Pérez JM, Cámara-Álvarez JF. Effects of paraoxonase 1 gene polymorphisms on heart diseases: Systematic review and meta-analysis of 64 case-control studies. Medicine (Baltimore) 2016; 95:e5298. [PMID: 27858903 PMCID: PMC5591151 DOI: 10.1097/md.0000000000005298] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Associations between paraoxonase 1 (PON1) gene polymorphisms and heart diseases (HD) risk remain inconsistent. In order to obtain address this issue we performed a meta-analysis to assess the association between the L55M and Q192R polymorphisms of PON1 gene and heart diseases risk. METHODS Relevant studies were enrolled by searching databases systematically. Odds ratios (ORs) with 95% confidence intervals (CIs) were used to calculate the strength of association. Subgroup analyses were conducted for diagnostic and ethnicity. The heterogeneity among each of the studies was calculated by using Cochran Qtest and the inconsistency index (I), and Begg's funnel plot and Egger's tests were performed to evaluate publication bias. RESULT Sixty four studies involving a total of 19,715 cases and 33,397 controls were included in this meta-analysis. We found that the L55M polymorphism showed a significant association with heart diseases in Europeans (OR 1.44, 95%CI 1.33-1.56) and Asians (OR 1.18, 95%CI 1.03-1.35). This meta-analysis also showed a protective association of Q192R polymorphism with HD in Asian (OR 0.49, 95%CI 0.37-0.66) and African populations (OR 0.67, 95%CI 0.53-0.84). The 192R allele significantly decreased the risk of myocardial infarction (OR 0.75, 95%CI 0.57-0.99) and coronary artery disease (OR 0.91, 95%CI 0.84-0.98); however, individuals with 192Q allele had a markedly increased risk of coronary artery disease development (OR 1.38, 95%CI 1.22-1.56). CONCLUSION This study demonstrated that the genetic risk for heart diseases is associated with the PON1 gene polymorphisms. L55M polymorphism is a risk factor and Q192R polymorphism is protective in certain populations. It is worth noting that the 192Q allele may be a risk factor to develop coronary artery disease.
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Affiliation(s)
- Yazmín Hernández-Díaz
- Juarez Autonomous University of Tabasco, Multidisciplinary Academic Division of Jalpa de Mendez Jalpa de Mendez
| | | | | | - Thelma Beatriz González-Castro
- Juarez Autonomous University of Tabasco, Multidisciplinary Academic Division of Jalpa de Mendez Jalpa de Mendez
- Correspondence: Thelma Beatriz González Castro, Academic Division Multidisciplinary Jalpa de Méndez, Road Nacajuca-Jalpa de Mendez, Rancheria Rivera Alta, P.C. 86205, Jalpa de Mendez, Tabasco, Mexico (e-mail: )
| | - Candelario Rodríguez-Pérez
- Juarez Autonomous University of Tabasco, Multidisciplinary Academic Division of Jalpa de Mendez Jalpa de Mendez
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Paraoxonase-1 and Simvastatin Treatment in Patients with Stable Coronary Artery Disease. Int J Vasc Med 2016; 2016:6312478. [PMID: 27213056 PMCID: PMC4860225 DOI: 10.1155/2016/6312478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 01/14/2016] [Accepted: 03/20/2016] [Indexed: 11/18/2022] Open
Abstract
Background. Paraoxonase-1 (PON1) is the crucial antioxidant marker of high-density lipoproteins. The present study is aimed at assessing the effect of simvastatin treatment on PON1 activity and its relationship to Q192R and M55L polymorphisms in subjects with stable coronary artery disease (CAD). Methods. The patient group was composed of 53 individuals with stable CAD, and the control group included 53 sex-matched police officers without CAD. CAD patients were treated with simvastatin 40mg/day for 12 months. Respectively, flow mediated dilatation (FMD), serum hs-CRP and TNF-α levels, urinary 8-iso-PGF2α concentrations, and PON1 activity were evaluated in definitive intervals. Results. There was no effect of simvastatin treatment on urinary 8-iso-PGF2α. Simvastatin treatment significantly increased FMD value, decreased CRP and TNF-α concentration. After adjusting for PON1 genotypes, significantly higher PON1 activity was noted in the 192R allele carriers, in both groups. Regardless of genotype, PON1 activity remained stable after simvastatin treatment. Conclusions. The present study confirms a positive effect of simvastatin therapy on endothelial function and inflammatory markers in secondary prevention. Simvastatin treatment shows no effects on PON1 activity and 8-isoprostanes level. The effect of simvastatin therapy on PON1 activity is not modulated by Q192R and M55L polymorphisms.
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Arora S, Patra SK, Saini R. HDL—A molecule with a multi-faceted role in coronary artery disease. Clin Chim Acta 2016; 452:66-81. [DOI: 10.1016/j.cca.2015.10.021] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Revised: 10/13/2015] [Accepted: 10/22/2015] [Indexed: 01/18/2023]
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Mabrouk H, Mechria H, Mechri A, Azizi I, Neffati F, Douki W, Gaha L, Najjar MF. Paraoxonase 1 activity and lipid profile in schizophrenic patients. Asian J Psychiatr 2014; 9:36-40. [PMID: 24813034 DOI: 10.1016/j.ajp.2013.12.019] [Citation(s) in RCA: 14] [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: 07/03/2012] [Revised: 12/27/2013] [Accepted: 12/29/2013] [Indexed: 11/19/2022]
Abstract
OBJECTIVE This study aimed to investigate the variations of paraoxonase 1 (PON1) activity and lipid profile in patients with schizophrenia and the association of this activity with the sociodemographic, clinical and therapeutical characteristics of this population. PATIENTS AND METHODS Our cross-sectional study included 140 schizophrenic patients and 119 control subjects aged respectively 37.3±10.4 and 41.4±10 years. PON1 activity was determined using Konelab 30™ equipment (Thermo Electron Corporation). Plasma total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (c-HDL) and low-density lipoprotein cholesterol (c-LDL) concentrations were determined using Cobas 6000™ (Roche Diagnostics), apolipoproteins (ApoA1, ApoB) and lipoprotein (a) (Lp(a)) were determined using Integra 400 plus (Roche Diagnostics). RESULTS Compared to controls, patients had no significant decrease of PON1 activity and significantly lower ApoA1, c-HDL levels, and significantly higher levels of TG, ApoB, Lp(a) and TC/c-HDL and ApoB/ApoA1 ratios. Furthermore, PON1 activity was correlated with TG/c-HDL ratio. The lowest PON1 activity was noted in obese patients, in paranoid sub-type and in patients treated with combination of typical and atypical antipsychotics without significant difference. Moreover, it was associated with gender and cigarette smoking but not with alcohol consumption status. CONCLUSION Schizophrenic patients had a decrease in PON1 activity and perturbations in their lipid profiles that contribute to increase the risk of cardiovascular diseases. In addition, our results revealed that there was no association between the decrease of PON1 activity and any demographic or clinical characteristics. Therefore, such patients require specific care, particularly with regard to their lipid profile.
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Affiliation(s)
- Hajer Mabrouk
- Biochemistry-Toxicology Laboratory, University Hospital of Monastir, Tunisia; Research Laboratory "Vulnerability to Psychotic Disorders LR 05 ES 10", Psychiatry Department, University Hospital of Monastir, Tunisia.
| | - Haithem Mechria
- Psychiatry Department, University Hospital of Monastir, Tunisia
| | - Anouar Mechri
- Research Laboratory "Vulnerability to Psychotic Disorders LR 05 ES 10", Psychiatry Department, University Hospital of Monastir, Tunisia; Psychiatry Department, University Hospital of Monastir, Tunisia
| | - Islam Azizi
- Biochemistry-Toxicology Laboratory, University Hospital of Monastir, Tunisia
| | - Fadoua Neffati
- Biochemistry-Toxicology Laboratory, University Hospital of Monastir, Tunisia
| | - Wahiba Douki
- Biochemistry-Toxicology Laboratory, University Hospital of Monastir, Tunisia; Research Laboratory "Vulnerability to Psychotic Disorders LR 05 ES 10", Psychiatry Department, University Hospital of Monastir, Tunisia
| | - Lotfi Gaha
- Research Laboratory "Vulnerability to Psychotic Disorders LR 05 ES 10", Psychiatry Department, University Hospital of Monastir, Tunisia; Psychiatry Department, University Hospital of Monastir, Tunisia
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Mild Hyperhomocysteinemia Increases Brain Acetylcholinesterase and Proinflammatory Cytokine Levels in Different Tissues. Mol Neurobiol 2014; 50:589-96. [DOI: 10.1007/s12035-014-8660-6] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 02/11/2014] [Indexed: 01/05/2023]
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Atamer Y, Atamer A, Can AS, Hekimoğlu A, Ilhan N, Yenice N, Koçyiğit Y. Effects of rosiglitazone on serum paraoxonase activity and metabolic parameters in patients with type 2 diabetes mellitus. Braz J Med Biol Res 2013; 46:528-32. [PMID: 23802228 PMCID: PMC3854442 DOI: 10.1590/1414-431x20132818] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2012] [Accepted: 04/15/2013] [Indexed: 08/30/2023] Open
Abstract
Human serum paraoxonase contributes to the anti-atherogenic effect of
high-density lipoprotein cholesterol (HDL-C) and has been shown to protect both
low-density lipoprotein cholesterol (LDL-C) and HDL-C against lipid
peroxidation. We investigated the effects of rosiglitazone on paraoxonase
activity and metabolic parameters in patients with type 2 diabetes mellitus [50
patients (30 males, 20 females); mean±SD age: 58.7±9.2 years, body mass index:
28.2±4.1'kg/m2], in whom glucose control could not be achieved
despite treatment with metformin, sulphonylurea, and/or insulin. The patients
were given 4'mg/day rosiglitazone for 3 months in addition to their usual
treatment. Serum paraoxonase activity, malondialdehyde, homocysteine, and lipid
profile were measured at the time of initiation and at the end of therapy with
rosiglitazone. After rosiglitazone therapy, serum levels of HDL-C,
apolipoprotein A-1, and paraoxonase activity increased significantly (P<0.05)
and malondialdehyde, homocysteine, lipoprotein(a), and glucose levels decreased
significantly (P<0.05), but no significant changes in levels of total
cholesterol and apolipoprotein B were observed. Triglyceride levels also
increased significantly (P<0.05). Rosiglitazone treatment led to an
improvement in glycemic control and to an increase in paraoxonase activity and
HDL-C levels. Although rosiglitazone showed favorable effects on
oxidant/antioxidant balance and lipid profile, further studies are needed to
determine the effect of rosiglitazone on cardiovascular risk factors and
cardiovascular morbidity and mortality.
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Affiliation(s)
- Y Atamer
- Department of Medical Biochemistry, Faculty of Medicine, Dicle University, Diyarbakır, Turkey.
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18
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Kota SK, Meher LK, Kota SK, Jammula S, Krishna SVS, Modi KD. Implications of serum paraoxonase activity in obesity, diabetes mellitus, and dyslipidemia. Indian J Endocrinol Metab 2013; 17:402-412. [PMID: 23869295 PMCID: PMC3712369 DOI: 10.4103/2230-8210.111618] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Human serum paraoxonase 1 (PON1) is an enzyme with esterase activity, and is physically bound to high-density lipoproteins (HDL). It plays a key role in the action of HDL toward protection of lipoprotein and biological membrane against oxidative damage. It may have a protective role against atherosclerosis by virtue of its action on hydrolyzing lipid peroxides and preventing accumulation of phospholipids in oxidized low-density lipoprotein (LDL). PON1 is hypothesized to be an indicator of the risk of atherosclerosis and coronary artery disease development. Numerous studies have implicated PON1 activity in relation to various endocrine disorders. The current article reviews the clinical perspectives of PON1 activity with regards to obesity, diabetes mellitus with its complications, and dyslipidemia.
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Affiliation(s)
- Sunil K. Kota
- Department of Endocrinology, Medwin Hospital, Hyderabad, Andhra Pradesh, India
| | - Lalit K. Meher
- Department of Medicine, MKCG Medical College, Berhampur, Orissa, India
| | - Siva K. Kota
- Department of Anesthesia, Central Security Hospital, Riyadh, Saudi Arabia
| | - Sruti Jammula
- Department of Pharmaceutics, Roland Institute of Pharmaceutical Sciences, Berhampur, Orissa, India
| | - S. V. S. Krishna
- Department of Endocrinology, Medwin Hospital, Hyderabad, Andhra Pradesh, India
| | - Kirtikumar D. Modi
- Department of Endocrinology, Medwin Hospital, Hyderabad, Andhra Pradesh, India
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Cozzi L, Campolo J, Parolini M, De Maria R, Patrosso MC, Marocchi A, Parodi O, Penco S. Paraoxonase 1 L55M, Q192R and paraoxonase 2 S311C alleles in atherothrombosis. Mol Cell Biochem 2012; 374:233-8. [DOI: 10.1007/s11010-012-1525-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Accepted: 11/23/2012] [Indexed: 12/13/2022]
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Litvinov D, Mahini H, Garelnabi M. Antioxidant and anti-inflammatory role of paraoxonase 1: implication in arteriosclerosis diseases. NORTH AMERICAN JOURNAL OF MEDICAL SCIENCES 2012. [PMID: 23181222 PMCID: PMC3503369 DOI: 10.4103/1947-2714.103310] [Citation(s) in RCA: 147] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Paraoxonase 1 (PON1) is a hydrolytic enzyme with wide range of substrates, and capability to protect against lipid oxidation. Despite of the large number of compounds that can be hydrolyzed by paraoxonase, the biologically relevant substrates are still not clearly determined. There is a massive in vitro and in vivo data to demonstrate the beneficial effects of PON1 in several atherosclerosis-related processes. The enzyme is primarily expressed in liver; however, it is also localized in other tissues. PON1 attracted significant interest as a protein that is responsible for the most of antioxidant properties of high-density lipoprotein (HDL). Several bioactive molecules such as dietary polyphenols, aspirin and its hydrolysis product salicylate, are known to stimulate PON1 transcription activation in mouse liver and HepG2 cell line. Studies on the activity, function, and genetic makeup have revealed a protective role of PON1. Some striking data were obtained in PON1 gene knockout and PON1 transgenic mouse models and in human studies. The goal of this review is to assess the current understanding of PON1 expression, enzymatic and antioxidant activity, and its atheroprotective effects. Results from in vivo and in vitro basic studies; and from human studies on the association of PON1 with coronary artery disease (CAD) and ischemic stroke will be discussed.
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Affiliation(s)
- Dmitry Litvinov
- Burnett School of Biomedical Sciences, University of Central Florida, Orlando, FL, USA
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21
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Effect of catechin/epicatechin dietary intake on endothelial dysfunction biomarkers and proinflammatory cytokines in aorta of hyperhomocysteinemic mice. Eur J Nutr 2012; 52:1243-50. [DOI: 10.1007/s00394-012-0435-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Accepted: 08/01/2012] [Indexed: 01/18/2023]
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Macharia M, Hassan MS, Blackhurst D, Erasmus RT, Matsha TE. The growing importance of PON1 in cardiovascular health. J Cardiovasc Med (Hagerstown) 2012; 13:443-53. [DOI: 10.2459/jcm.0b013e328354e3ac] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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She ZG, Chen HZ, Yan Y, Li H, Liu DP. The human paraoxonase gene cluster as a target in the treatment of atherosclerosis. Antioxid Redox Signal 2012; 16:597-632. [PMID: 21867409 PMCID: PMC3270057 DOI: 10.1089/ars.2010.3774] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The paraoxonase (PON) gene cluster contains three adjacent gene members, PON1, PON2, and PON3. Originating from the same fungus lactonase precursor, all of the three PON genes share high sequence identity and a similar β propeller protein structure. PON1 and PON3 are primarily expressed in the liver and secreted into the serum upon expression, whereas PON2 is ubiquitously expressed and remains inside the cell. Each PON member has high catalytic activity toward corresponding artificial organophosphate, and all exhibit activities to lactones. Therefore, all three members of the family are regarded as lactonases. Under physiological conditions, they act to degrade metabolites of polyunsaturated fatty acids and homocysteine (Hcy) thiolactone, among other compounds. By detoxifying both oxidized low-density lipoprotein and Hcy thiolactone, PONs protect against atherosclerosis and coronary artery diseases, as has been illustrated by many types of in vitro and in vivo experimental evidence. Clinical observations focusing on gene polymorphisms also indicate that PON1, PON2, and PON3 are protective against coronary artery disease. Many other conditions, such as diabetes, metabolic syndrome, and aging, have been shown to relate to PONs. The abundance and/or activity of PONs can be regulated by lipoproteins and their metabolites, biological macromolecules, pharmacological treatments, dietary factors, and lifestyle. In conclusion, both previous results and ongoing studies provide evidence, making the PON cluster a prospective target for the treatment of atherosclerosis.
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Affiliation(s)
- Zhi-Gang She
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China
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Wang M, Lang X, Cui S, Zou L, Cao J, Wang S, Wu X. Quantitative assessment of the influence of paraoxonase 1 activity and coronary heart disease risk. DNA Cell Biol 2012; 31:975-82. [PMID: 22320866 DOI: 10.1089/dna.2011.1478] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Human paraoxonase 1 (PON1) is a calcium-dependent high-density lipoprotein associated ester hydrolase that has attracted considerable attention as a candidate factor for coronary heart disease (CHD) based on its function as a key factor in lipoprotein catabolism pathways. This meta-analysis aimed to clarify the inconsistency of published studies and to establish a comprehensive picture of the relationship between PON1 activity and CHD susceptibility. A systematic search was performed from PubMed, Web of Science, EMBASE, and CNKI databases. Ratio of means (RoM) between case and control and 95% confidence intervals (CIs) were calculated using a random-effects model. The source of heterogeneity was explored by subgroup analysis and meta-regression. We identified 47 eligible studies including a total of 9853 CHD cases and 11,408 controls. The pooled analysis showed that CHD patients had a 19% lower PON1 activity than did the controls (RoM=0.81; 95% CI: 0.74-0.89, p<10(-5)). In the subgroup analyses by CHD end points, a similar effect size was observed with coronary stenosis and myocardial infarction subgroups, with corresponding RoM of 0.81 (95% CI: 0.73-0.89, p<10(-4)) and 0.83 (95% CI: 0.74-0.93, p=0.001), respectively. Decreased PON1 activity associated with CHD risk was observed in almost all subgroup analysis according to ethnicity, sample size, study design, mean age of cases, source, and type of control. Decreased PON1 activity may act as a risk factor for the development of CHD. Progressive decrease in serum PON1 activity may exist for an individual with severe disease. However, larger studies using a prospective approach are needed to confirm our results.
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Affiliation(s)
- Mingsong Wang
- Department of Cardiothoracic Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, PR China
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25
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Sztanek F, Seres I, Harangi M, Lőcsey L, Padra J, Paragh GJR, Asztalos L, Paragh G. Decreased paraoxonase 1 (PON1) lactonase activity in hemodialyzed and renal transplanted patients. A novel cardiovascular biomarker in end-stage renal disease. Nephrol Dial Transplant 2012; 27:2866-72. [PMID: 22247228 DOI: 10.1093/ndt/gfr753] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Human paraoxonase-1 (PON1) has also been described as a lactonase. Decreased PON1 lactonase activity was found to be a predictor of cardiovascular disease. Homocysteine thiolactonase activity may prevent proteins from homocysteinylation and is thought to be a protective factor against the progression of atherosclerosis. Previous studies have demonstrated decreased PON1 paraoxonase activity in hemodialyzed (HD) and renal transplant (TRX) patients; however, lactonase activity has not been investigated. We aimed to determine the paraoxonase and lactonase activities and to clarify the relationship between lactonase activity and a set of cardiovascular risk factors, such as homocysteine, cystatin C and asymmetric dimethylarginine (ADMA) levels, in HD and TRX patients and in healthy controls. METHODS One hundred and eight HD and 78 TRX patients and 63 healthy controls were involved in the study. Paraoxonase and lactonase activities (paraoxon and gamma-thiobutyrolactone as substrates) were measured spectrophotometrically. ADMA level was determined with sandwich enzyme-linked immunosorbent assay. RESULTS Both HD and TRX patients had significantly lower lactonase activities compared to the control group (P<0.05). Significantly lower paraoxonase activities were found in HD patients compared to the TRX group (P<0.05). Significant negative correlation was found between lactonase activity and ADMA level in the whole study population (P<0.001), while paraoxonase and lactonase activities showed significant positive correlation (P<0.001). Multiple regression analysis identified paraoxonase activity and homocysteine level as independent predictors of lactonase activity. CONCLUSION Lactonase activity is a potential new predictor of cardiovascular risk in renal failure. Measurement of lactonase activity is recommended in future studies on HD and TRX patients.
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Affiliation(s)
- Ferenc Sztanek
- First Department of Medicine, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary
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Zhao Y, Ma Y, Fang Y, Liu L, Wu S, Fu D, Wang X. Association between PON1 activity and coronary heart disease risk: a meta-analysis based on 43 studies. Mol Genet Metab 2012; 105:141-8. [PMID: 22030099 DOI: 10.1016/j.ymgme.2011.09.018] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Accepted: 09/13/2011] [Indexed: 12/13/2022]
Abstract
Paraoxonase 1 (PON1) is reported to have antioxidant and cardioprotective properties. The relationship between PON1 activity and coronary heart disease (CHD) risk in humans has been reported among various ethnic populations in the past decade. However, these studies have yielded contradictory results. To investigate this inconsistency, we conducted a meta-analysis of 43 studies involving a total of 20,629 subjects to evaluate the effect of PON1 activity on susceptibility for CHD. We also systematically explored potential sources of heterogeneity using subgroup analysis and meta-regression. Significant decreases paraoxonase activity of PON1 were observed in CHD patients compared with non-CHD controls with SMD of -0.78 (95% CI: -0.98, -0.57; P<0.001). Similar results were also found for arylesterase activity of PON1 with SMD of -0.50 (95% CI: -0.64, -0.36; P<0.001). In the subgroup analysis by ethnicity, CHD phenotype, sample size, source of controls, mean age and BMI of cases, significantly increased risks were also found. In addition, our analyses detected a possibility of publication bias with an overestimate of the true association by smaller studies. This meta-analysis demonstrated that decreasing in PON1 activity is a risk factor associated with increased CHD susceptibility. However, additional very large-scale studies are warranted to provide conclusive evidence on the effects of PON1 activity on risk of CHD.
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Affiliation(s)
- Yuan Zhao
- The Department of Gastroenterology of Zhongshan Hospital, Fudan University, Shanghai, 200032, PR China
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Kain V, Kumar S, Puranik AS, Sitasawad SL. Azelnidipine protects myocardium in hyperglycemia-induced cardiac damage. Cardiovasc Diabetol 2010; 9:82. [PMID: 21118576 PMCID: PMC3004822 DOI: 10.1186/1475-2840-9-82] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2010] [Accepted: 12/01/2010] [Indexed: 01/25/2023] Open
Abstract
Background Azelnidipine (AZL), a long-acting dihydropyridine-based calcium antagonist, has been recently approved and used for treating ischemic heart disease and cardiac remodeling after myocardial infarction, however, its effect on hyperglycemia-induced cardiac damage has not been studied. Methods This study examined the effect of AZL on circulating markers of cardiac damage, altered lipid and cytokines profile and markers of oxidative stress including homocysteine in diabetic rats. Results STZ induced diabetes caused a significant increase in blood glucose levels. It also resulted in an increase in the levels of homocysteine and cardiac damage markers, like Troponin-1, CK-MB, CK-NAC, uric acid, LDH and alkaline phosphatase. Moreover, there was an increase in the levels of proinflammatory cytokines like TNF-α, IFN-γ, and TGF-β and decrease in the levels of IL-4 and IL-10. Additionally, there was increase in the levels of cholesterol, triglycerides, LDL, VLDL and a decrease in HDL in these animals. There was an altered antioxidant enzyme profile which resulted in a notable increase in the levels of oxidative stress markers like lipid peroxides, nitric oxide and carbonylated proteins. Compared with the untreated diabetic rats, AZL treatment significantly reduced the levels of troponin-1 (P < 0.05), CK-MB (P < 0.05), CK-NAC (P < 0.05), uric acid (P < 0.05), LDH (P < 0.05) and alkaline phosphatase (P < 0.05). It also reduced the levels of the TNF-α (P < 0.05), IFN-γ (P < 0.05), and TGF-β (P < 0.05) and increased the levels of IL-4 (P < 0.05). A significant decrease in the serum cholesterol (P < 0.05), triglycerides (P < 0.05), LDL (P < 0.05), VLDL (P < 0.05) and a significant rise in levels of HDL (P < 0.05) was also observed. Treatment with AZL corrected the distorted antioxidant enzyme profile resulting in a significant decrease in the levels of lipid peroxides, nitric oxide and carbonylated proteins. Conclusion Our results indicate that AZL treatment can reduce the risk of hyperglycemia induced metabolic disorders and its role can be further extended to explore its therapeutic potential in diabetic patients with cardiac complications.
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Affiliation(s)
- Vasundhara Kain
- National Centre for Cell Science, NCCS Complex, Pune University Campus, Ganeshkhind Road, Pune 411007, Maharashtra, India
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Four genetic polymorphisms of paraoxonase gene and risk of coronary heart disease: a meta-analysis based on 88 case-control studies. Atherosclerosis 2010; 214:377-85. [PMID: 21146823 DOI: 10.1016/j.atherosclerosis.2010.11.028] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2010] [Revised: 11/12/2010] [Accepted: 11/12/2010] [Indexed: 01/10/2023]
Abstract
OBJECTIVE The human paraoxonase (PON) is calcium dependent HDL associated ester hydrolase which has attracted considerable attention as a candidate gene for coronary heart disease based on its enzyme function as a key factor in lipoprotein catabolism pathways. Many studies have examined the association between polymorphisms in the PON gene and risk of coronary heart disease (CHD), but the results have been inconsistent. METHODS We conducted a meta-analysis of 88 studies on 4 PON polymorphisms [Q192R, L55M, and T(-107)C in the PON1 and the S311C in the PON2] published before August 2010, including a total of 24,702 CHD cases and 38,232 controls. We also systematically explored potential sources of heterogeneity. RESULT In a combined analysis, the summary per-allele odds ratio for CHD of the 192R was 1.11 (95% CI: 1.05-1.17). However, when the analyses were restricted to 10 larger studies (n>500 cases), the summary per-allele odds ratio was 0.96 (95% CI: 0.90-1.02). Our analyses detected a possibility of publication bias with an overestimate of the true association by smaller studies. A meta-analysis of studies on the 55M, (-107)T, and 311C variant showed no significant overall association with CHD, yielding a per-allele odds ratio of 0.94 (95% CI: 0.88-1.00), 1.02 (95% CI: 0.91-1.15) and 1.02 (95% CI: 0.90-1.16) respectively. CONCLUSIONS This meta-analysis suggested an overall weak association between the R192 polymorphism and CHD risk.
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Bayrak A, Bayrak T, Demirpençe E, Kılınç K. Differential hydrolysis of homocysteine thiolactone by purified human serum (192)Q and (192)R PON1 isoenzymes. J Chromatogr B Analyt Technol Biomed Life Sci 2010; 879:49-55. [PMID: 21123122 DOI: 10.1016/j.jchromb.2010.11.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2010] [Revised: 10/27/2010] [Accepted: 11/04/2010] [Indexed: 10/18/2022]
Abstract
Human serum paraoxonase 1 (PON1) is a HDL-associated enzyme that catalyzes the hydrolysis of a variety of aromatic carboxylic acid esters and several organophosphates. Recently it has been suggested that a physiological substrate of serum PON1 is homocysteine thiolactone which is a putative risk factor in atherosclerosis. In this study, human (192)Q and (192)R PON1 isoenzymes were purified from the respective phenotype human serum, using a protocol consisting of ammonium sulfate precipitation and four chromatography steps: gel filtration, ion-exchange, non-specific affinity, and a second ion-exchange. Using paraoxon as substrate, overall purification fold was found as 742 for (192)R PON1 and 590 for (192)Q PON1. The final purified enzymes were shown as single protein bands close to 45kDa on SDS-PAGE and confirmed by Western blot. Substrate kinetics were studied with phenyl acetate, paraoxon and homocysteine thiolactone. Both PON1 isoenzymes showed mixed type inhibition with phenyl acetate. K(m) values of (192)Q and (192)R PON1 for homocysteine thiolactone were 23.5mM and 22.6mM respectively. For (192)R PON1, the V(max) was 2.5-fold and k(cat)/K(m) was 2.6-fold higher than those for (192)Q PON1 when homocysteine thiolactone is used as substrate. The present data suggest that defining (192)Q and (192)R PON1 isoforms could be a good predictor and prognostic marker in the cardiovascular risk assessment.
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Affiliation(s)
- Ahmet Bayrak
- Department of Biochemistry, Hacettepe University Faculty of Medicine, 06100, Ankara, Turkey.
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Türkeli H, Çaycı T, Akgül EÖ, Macit E, Yaman H, Aydın I, Demirin H, Alacam H, Özkan E, Çakır E, Deren Ö, Erbil MK, Kunak ZI, Burat K, Akman Ş. Paraoxonase-1 activity determination via paraoxon substrate yields no significant difference in mild hyperhomocysteinemia. Int J Cardiol 2010; 145:42-3. [DOI: 10.1016/j.ijcard.2009.03.138] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2009] [Accepted: 03/26/2009] [Indexed: 11/17/2022]
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Kallel A, Sediri Y, Sbaï MH, Mourali MS, Feki M, Elasmi M, Taieb SH, Sanhaji H, Souheil O, Mechmeche R, Jemaa R, Kaabachi N. The paraoxonase L55M and Q192R gene polymorphisms and myocardial infarction in a Tunisian population. Clin Biochem 2010; 43:1461-3. [PMID: 20833162 DOI: 10.1016/j.clinbiochem.2010.08.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2010] [Revised: 08/12/2010] [Accepted: 08/30/2010] [Indexed: 11/26/2022]
Abstract
OBJECTIVES In the present study, we examined a possible association between the PON1 Q192R and L55M polymorphisms and myocardial infarction (MI) in a sample of the Tunisian population. DESIGN AND METHODS Three hundred and ten patients with MI and 375 controls were recruited. Paraoxonase gene polymorphisms at codon 192 and 55 were analyzed by PCR-RFLP. RESULTS Genotype distributions and allele frequencies of L55M were similar among the control and MI groups. For the Q192R polymorphism patients with MI had significantly higher frequency of the RR genotype compared to controls [17.1% vs. 10.9%; OR (95% CI), 1.93 (1.24-3.02); p=0.004]. The MI patient group showed a significantly higher frequency of the R allele compared to the controls [38% vs. 30%; χ(2)=10.74, p=0.001]. The association between the PON1 Q192R polymorphism and MI remained significant after adjustment for other well-established cardiovascular risk factors. CONCLUSIONS The present study showed a significant and independent association between the PON1 Q192R polymorphism (presence of R allele) and MI in the Tunisian population.
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Affiliation(s)
- Amani Kallel
- Department of Biochemistry, Rabta University Hospital, Tunis, Tunisia
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Gokkusu C, Tulubas F, Unlucerci Y, Ozkok E, Umman B, Aydin M. Homocysteine and pro-inflammatory cytokine concentrations in acute heart disease. Cytokine 2010; 50:15-8. [PMID: 20129796 DOI: 10.1016/j.cyto.2009.12.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2009] [Revised: 12/05/2009] [Accepted: 12/12/2009] [Indexed: 10/19/2022]
Abstract
Inflammation is involved in development and progression of atherosclerosis. Interleukin-2 (IL-2) and interleukin-6 (IL-6) have been correlated with various cardiovascular diseases. Hyperhomocysteinemia is an important risk factor for atherosclerosis and thrombotic disease. Recent studies have demonstrated that homocysteine (Hcy) enhances productions of several pro-inflammatory cytokines. In the light of these findings, we decided to determine if any relationship exists between IL-2 and IL-6, the pro-inflammatory cytokines, and total homocysteine (tHcy) in acute coronary syndrome (ACS). A total of 102 patients with ACS and 90 healthy subjects were included in the study. The levels of tHcy, IL-2 and IL-6 were higher and folic acid was lower in patients as compared with those of controls. Furthermore, data of the area under ROC plot for IL-2 demonstrated that IL-2 had higher sensitivity. These data suggest that enhanced inflammation may be associated with tHcy-related cardiovascular disease.
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Affiliation(s)
- Cahide Gokkusu
- Department of Biochemistry, Istanbul University, Turkey.
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Ferretti G, Bacchetti T, Masciangelo S, Bicchiega V. Effect of homocysteinylation on high density lipoprotein physico-chemical properties. Chem Phys Lipids 2010; 163:228-35. [DOI: 10.1016/j.chemphyslip.2009.11.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2009] [Revised: 11/14/2009] [Accepted: 11/27/2009] [Indexed: 01/27/2023]
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Pochernyaev AK, Tyzhnenko TV, Gorshunska MY, Poltorak VV, Atramentova LA. Polymorphism of the paraoxonase (PON-1) gene in the Slavonic part of the Kharkiv population. CYTOL GENET+ 2009. [DOI: 10.3103/s0095452709050090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wehr H, Bednarska-Makaruk M, Graban A, Lipczyńska-Łojkowska W, Rodo M, Bochyńska A, Ryglewicz D. Paraoxonase activity and dementia. J Neurol Sci 2009; 283:107-8. [PMID: 19268306 DOI: 10.1016/j.jns.2009.02.317] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Paraoxonase activity, homocysteine level and lipids were determined in 120 patients with dementia (51 with Alzheimer disease, 28 with dementia of vascular origin, 41 with mixed dementia), 45 with mild cognitive impairment and in 61 age and sex matched controls without dementia. Paraoxonase activity was decreased in Alzheimer disease and in mixed dementia as compared with control group. In the same forms of dementia homocysteine levels were increased. In Alzheimer disease paraoxonase activity was negatively correlated with homocysteine levels. Minimental State Examination results showed positive correlation with paraoxonase activity. The results suggest an important role of oxidative stress in the development of the forms of dementia with prevailing neurodegeneration.
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Affiliation(s)
- Hanna Wehr
- Department of Genetics, Institute of Psychiatry and Neurology, Warsaw, Poland.
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Kerkeni M, Letaief A, Achour A, Miled A, Trivin F, Maaroufi K. Hyperhomocysteinemia, paraoxonase concentration and cardiovascular complications in Tunisian patients with nondiabetic renal disease. Clin Biochem 2009; 42:777-82. [PMID: 19233152 DOI: 10.1016/j.clinbiochem.2009.02.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2008] [Revised: 02/09/2009] [Accepted: 02/09/2009] [Indexed: 11/24/2022]
Abstract
OBJECTIVES Hyperhomocysteinemia is associated with an increased risk of cardiovascular diseases. We determine homocysteine levels (Hcy), paraoxonase (PON1) concentration and their relationship on cardiovascular complications in patients with chronic renal disease (CRD). DESIGN AND METHODS The study population included 100 CRD patients and 120 healthy controls. Renal function was assessed using the eGFR by the MDRD study equation. Patients were considered to have CRD when the eGFR was <60 mL/min/1.73 m(2). Hcy concentrations were determined by direct chemiluminescence assay. PON1 concentration was measured spectrophotometrically using phenylacetate as a substrate. RESULTS We found an increased Hcy levels and a decreased eGFR and PON1 concentration in CRD patients compared to the control group (P<0.001, P<0.001, P<0.01 respectively). Patients with cardiovascular complications showed an increased Hcy levels and a lower PON1 concentration than patients without cardiovascular complications (P<0.001, P<0.01 respectively). CONCLUSION We showed that hyperhomocysteinemia and low PON1 concentration are associated with CRD and markedly associated in patients with cardiovascular complications. Additional effects contribute to the severity of renal disease and increase the incidence of cardiovascular disease.
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Affiliation(s)
- Mohsen Kerkeni
- Research Unit 03/UR/08-14, Faculty of Pharmacy, 5000-Monastir, Tunisia.
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Aydin M, Gokkusu C, Ozkok E, Tulubas F, Unlucerci Y, Pamukcu B, Ozbek Z, Umman B. Association of genetic variants in Methylenetetrahydrofolate Reductase and Paraoxonase-1 genes with homocysteine, folate and vitamin B12 in coronary artery disease. Mol Cell Biochem 2009; 325:199-208. [DOI: 10.1007/s11010-009-0038-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2008] [Accepted: 01/28/2009] [Indexed: 01/17/2023]
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Ginsberg G, Neafsey P, Hattis D, Guyton KZ, Johns DO, Sonawane B. Genetic polymorphism in paraoxonase 1 (PON1): Population distribution of PON1 activity. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2009; 12:473-507. [PMID: 20183530 DOI: 10.1080/10937400903158409] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Paraoxonase-1 (PON1) is a serum esterase that hydrolyzes the activated oxon form of several organophosphates. The central role of PON1 in detoxification of organophosphate (OP) pesticides was demonstrated in knockout mouse studies, suggesting that human variability in PON1 needs to be considered in health risk assessments involving exposure to these pesticides. The current analysis focused on two genetic loci in which polymorphisms demonstrated to affect PON1 activity. Detailed kinetic studies and population studies found that the *192Q (wild type) allele is more active toward some substrates (such as sarin, soman, and diazoxon) and less active toward others (such as paraoxon or chlorpyrifos) relative to the variant *192R allele. Another allele that affects activity is *55M; PON1 enzyme quantity, rather than specific activity or substrate preference, is altered. The *192R variant occurs commonly with a frequency of 25-64% across the populations analyzed. The *55M allele is less common, occurring in 5-40% of individuals depending upon the ethnic group studied. These activity and allele frequency data were incorporated into Monte Carlo simulations in which the frequency of both variant alleles was simultaneously modeled in Caucasian, African American, and Japanese populations. The resulting Monte Carlo activity distributions were bimodal for the substrate paraoxon with approximately fourfold differences between low- and high-activity modal medians. Differences in activity between total population median and 1st percentile were five- to sixfold. When sarin metabolic variability was simulated, the population distributions were unimodal. However, there was an even greater degree of interindividual variability (median to 1st percentile difference >20-fold). These results show that the combined effects of two PON1 allelic variants yielded a population distribution that is associated with a considerable degree of interindividual variability in enzyme activity. This indicates that assessments involving PON1 substrates need to evaluate polymorphism-related variability in enzyme activity to display the distribution of internal doses and adverse responses. This may best be achieved via physiologically based pharmacokinetic (PBPK) models that input PON1 activity distributions, such as those generated in this analysis, to simulate the range of oxon internal doses possible across the population.
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Affiliation(s)
- Gary Ginsberg
- Connecticut Department of Public Health, Hartford, 06134, USA.
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Paraoxonase 1 gene promoter polymorphisms are associated with the extent of stenosis in coronary arteries. Thromb Res 2009; 123:503-10. [DOI: 10.1016/j.thromres.2008.03.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2008] [Revised: 02/18/2008] [Accepted: 03/06/2008] [Indexed: 11/24/2022]
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Holven KB, Aukrust P, Retterstøl K, Otterdal K, Bjerkeli V, Ose L, Nenseter MS, Halvorsen B. The antiatherogenic function of HDL is impaired in hyperhomocysteinemic subjects. J Nutr 2008; 138:2070-5. [PMID: 18936200 DOI: 10.3945/jn.108.090704] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
High plasma homocysteine concentrations have been associated with increased risk of cardiovascular disease, whereas plasma HDL concentration is inversely correlated to such disorders. We hypothesized that hyperhomocysteinemic subjects may have dysfunctional HDL. We therefore investigated the ability of serum from hyperhomocysteinemic male and female subjects (n = 10) and control subjects (n = 10) to induce cholesterol efflux and to inhibit release of inflammatory mediators from human umbilical vein endothelial cell. We found that serum from hyperhomocysteinemic subjects had impaired ability to induce cholesterol efflux from lipid-loaded macrophages compared with healthy controls. HDL from those with markedly raised homocysteine concentrations had a reduced antiinflammatory effect in tumor necrosis factor-alpha-activated endothelial cells with an attenuated suppressive effect on interleukin-6 growth-related oncogene-alpha release. Also, the activity of paraoxonase in serum, a multifunctional enzyme with antioxidative effects in relation to the function of HDL, was significantly reduced in hyperhomocysteinemic subjects, in particular those with markedly raised homocysteine concentration. Our findings suggest that hyperhomocysteinemic individuals have dysfunctional HDL particles with attenuated antiatherogenic activity and may represent a novel explanation for the increased risk of cardiovascular events in these individuals.
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Affiliation(s)
- Kirsten B Holven
- Institute for Basic Medical Sciences, Department of Nutrition, University of Oslo, Blindern, 0316 Oslo, Norway.
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Fu R, Sun YM, Su Y, Wu Y, Luan Y. EFFECT OF STATIN THERAPY ON PLASMA HIGH-DENSITY LIPOPROTEINCHOLESTEROL LEVELS IS MODIFIED BY PARAOXONASE 1 IN CHINESE PATIENTS WITH CORONARY HEART DISEASE. Clin Exp Pharmacol Physiol 2008; 35:982-3. [DOI: 10.1111/j.1440-1681.2008.04941.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kerkeni M, Added F, Ben Farhat M, Miled A, Trivin F, Maaroufi K. Hyperhomocysteinaemia and parameters of antioxidative defence in Tunisian patients with coronary heart disease. Ann Clin Biochem 2008; 45:193-8. [PMID: 18325185 DOI: 10.1258/acb.2007.007066] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND An imbalance between oxidative damage and antioxidative protection in association with the pathophysiology of atherosclerosis has been suggested. The aim of this study was to test the parameters of antioxidative defence and to assess their association with hyperhomocysteinaemia and the severity of coronary heart disease (CHD) in Tunisian patients. METHODS The study population included 100 patients with CHD and 120 healthy controls. The severity of CHD was expressed as the number of affected vessels. Superoxide dismutase (SOD) activity, glutathione peroxidase (GPx) activity and total antioxidant status (TAS) concentrations were measured using commercially available methods. Plasma total homocysteine (tHcy) concentration was determined by direct chemiluminescence assay. Serum zinc (Zn) was measured by a colorimetric method. RESULTS Compared with healthy control subjects, patients with CHD had significantly lower activities of SOD (P < 0.01), GPx (P < 0.001), and serum Zn concentrations (P < 0.001) and significantly higher tHcy concentration (P < 0.001). However TAS concentrations were not significantly different between the groups. SOD and GPx activities were negatively correlated with tHcy concentration (P < 0.05, P < 0.001, respectively). Patients with hyperhomocysteinaemia showed a lower GPx and SOD activities than patients with normohomocysteinaemia. Antioxidant enzyme activities tended to be decreased in CHD patients presenting with 0- to 3-vessel stenosis. CONCLUSIONS This study indicates that low activity of GPx, SOD and Zn concentration are associated with CHD patients. We hypothesize that hyperhomocysteinaemia and low antioxidant enzyme activities may increase the extent of CHD.
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Affiliation(s)
- Mohsen Kerkeni
- Research Unit 03/UR/08-14, Faculty of Pharmacy, 5000 Monastir, Tunisia.
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43
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Zammiti W, Mtiraoui N, Mahjoub T. Lack of consistent association between endothelial nitric oxide synthase gene polymorphisms, homocysteine levels and recurrent pregnancy loss in tunisian women. Am J Reprod Immunol 2008; 59:139-45. [PMID: 18211539 DOI: 10.1111/j.1600-0897.2007.00551.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
PROBLEM Polymorphisms of the endothelial nitric oxide synthase (eNOS) gene have been associated with reduced vascular NO production or increased level of homocysteine, and evaluated as risk factors for recurrent pregnancy loss (RPL). Therefore, in this case-control study, we aimed to determine the effects of some eNOS functional polymorphisms: the 27-bp intron 4 repeat, the 894G/T of exon 7, and the promoter substitution -786T/C, in women with RPL. METHOD OF STUDY We genotyped 350 patients with RPL and 200 healthy women by polymerase chain reaction (PCR) and restriction fragment length polymorphism-PCR (RFLP-PCR). The homocysteine total plasma concentrations (tHcy) were determined by enzyme-linked immunosorbent assay (ELISA). RESULTS None of the eNOS polymorphisms-related alleles, genotypes, and haplotypes were associated with RPL. The tHcy were similar between patients and controls; no significant association between tHcy levels and eNOS genotypes could be evidenced. CONCLUSION The present study identified a lack of association between eNOS gene polymorphisms, the risk of RPL and tHcy levels.
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Affiliation(s)
- Walid Zammiti
- Research Unit of Biology and Genetics of Cancer, Haematological and Autoimmune Diseases, Faculty of Pharmacy of Monastir, Monastir University, Monastir, Tunisia.
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45
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Poulakou MV, Paraskevas KI, Vlachos IS, Karabina SAP, Wilson MR, Iliopoulos DC, Tsitsilonis SI, Mikhailidis DP, Perrea DN. Effect of Statins on Serum Apolipoprotein J and Paraoxonase-1 Levels in Patients With Ischemic Heart Disease Undergoing Coronary Angiography. Angiology 2008; 59:137-44. [DOI: 10.1177/0003319707311722] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
It has been proposed that apolipoprotein J (apo J) and paraoxonase-1 (PON1) correlate with the extent and severity of ischemic heart disease (IHD). This article compares apo J and PON1 serum concentrations, PON1 activity, and the apo J/PON1 ratio in 138 IHD patients (64 statins users and 74 statin nonusers) referred for angiography and possible percutaneous coronary intervention. The effect of statin treatment on apo J and PON1 concentrations, PON1 activity, and the degree of coronary artery stenosis were evaluated. In both groups, apo J levels were increased, whereas PON1 concentration and activity decreased. IHD patients on statins had significantly lower apo J concentration and higher PON1 concentration and activity. Patients on statins had less coronary artery stenosis. High apo J levels, low PON1 levels, low PON1 activity, and a high apo J/PON1 ratio were associated with IHD. Statin treatment reverses these changes, probably by multiple beneficial actions.
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Affiliation(s)
- Maria V. Poulakou
- Laboratory for Experimental Surgery and Surgical Research 'N. S. Christeas,' School of Medicine, National and Kapodistrian University of Athens, Greece
| | - Kosmas I. Paraskevas
- Department of Clinical Biochemistry (Vascular Disease Prevention Clinic), Royal Free Hospital and Royal Free University College Medical School, University College London, UK, Laboratory for Experimental Surgery and Surgical Research 'N. S. Christeas,' School of Medicine, National and Kapodistrian University of Athens, Greece
| | - Ioannis S. Vlachos
- Laboratory for Experimental Surgery and Surgical Research 'N. S. Christeas,' School of Medicine, National and Kapodistrian University of Athens, Greece
| | | | - Mark R. Wilson
- School of Biological Sciences, University of Wollongong, NSW, Australia
| | - Dimitrios C. Iliopoulos
- Laboratory for Experimental Surgery and Surgical Research 'N. S. Christeas,' School of Medicine, National and Kapodistrian University of Athens, Greece, Department of Cardiothoracic Surgery, “Athens Medical Center,” Athens, Greece
| | - Serafim I. Tsitsilonis
- Laboratory for Experimental Surgery and Surgical Research 'N. S. Christeas,' School of Medicine, National and Kapodistrian University of Athens, Greece
| | - Dimitri P. Mikhailidis
- Department of Clinical Biochemistry (Vascular Disease Prevention Clinic), Royal Free Hospital and Royal Free University College Medical School, University College London, UK
| | - Despina N. Perrea
- Laboratory for Experimental Surgery and Surgical Research 'N. S. Christeas,' School of Medicine, National and Kapodistrian University of Athens, Greece,
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Abstract
The oxidizing nature of the extracellular environment is vastly different from the highly reducing nature of the intracellular compartment. The redox potential of the cytosolic compartment of the intracellular environment limits disulfide bond formation, whereas the oxidizing extracellular environment contains proteins rich in disulfide bonds. If not for an extracellular antioxidant system to eliminate reactive oxygen and nitrogen species, lipid peroxidation and protein oxidation would become excessive, resulting in cellular damage. Many reviews have focused on the role of intracellular antioxidants in the elimination of oxidative stress, but this one will focus on the coordinated action of both intracellular and extracellular antioxidants in limiting cellular oxidant stress.
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Lippi G, Salvagno GL, Targher G, Montagnana M, Guidi GC. Plasma gamma-glutamyl transferase activity predicts homocysteine concentration in a large cohort of unselected outpatients. Intern Med 2008; 47:705-7. [PMID: 18421185 DOI: 10.2169/internalmedicine.47.0810] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVE To evaluate the association between gamma-glutamyl transferase (GGT) and homocysteine in plasma. METHODS Combined results of GGT, total homocysteine, vitamin B12, folate and creatinine levels were analyzed in outpatients referred for laboratory testing over the past 5 years. RESULTS Cumulative results for homocysteine, GGT, B12, creatinine, folate could be retrieved for 449 outpatients > 35 years old over the study period. The concentration of homocysteine significantly increased among tertiles of GGT activity. In multivariable linear regression analysis, GGT activity was independently associated with homocysteine concentration, independent of age, gender, folate, vitamin B12 and serum creatinine levels. DISCUSSION Plasma GGT activity might be a useful means to predict homocysteine concentration in the general population.
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Affiliation(s)
- Giuseppe Lippi
- Division of Clinical Chemistry, University of Verona Medical School, Verona, Italy
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Serum PON1 arylesterase activity in relation to hyperhomocysteinaemia and oxidative stress in young adult central retinal venous occlusion patients. Eye (Lond) 2007; 22:969-74. [PMID: 18084236 DOI: 10.1038/sj.eye.6703062] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
AIM To estimate the arylesterase activity of serum paraoxonase-1 (PON1-ARE), which is reported to have an antioxidant and antiatherogenic potential and to correlate with plasma homocysteine (Hcys) and plasma TBARS in young adult central retinal venous occlusion (CRVO) patients. METHODS A case-control prospective study carried out in 10 CRVO patients (mean age 27+/-5 years; 7 males, 3 females) and 20 healthy controls (mean age 29+/-5 years; 15 males, 5 females). RESULTS The CRVO patients showed a significantly lowered serum PON1-ARE activity (P=0.009) along with a significant increase in the levels of plasma Hcys (P=0.018) when compared to the control subjects. There was a negative correlation between serum PON1-ARE and plasma Hcys levels (P=0.058) as well as between PON1-ARE and plasma TBARS levels (P=0.001) in the CRVO patients. CONCLUSION This is the first report of lowered serum PON1-ARE level as a risk factor for CRVO (OR= 1.108, CI=0.914, 1.314; P=0.296), which is found to correlate with oxidative stress.
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Sarandol A, Kirli S, Akkaya C, Ocak N, Eroz E, Sarandol E. Coronary artery disease risk factors in patients with schizophrenia: effects of short term antipsychotic treatment. J Psychopharmacol 2007; 21:857-63. [PMID: 17715203 DOI: 10.1177/0269881107077609] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The aim of the present study was to investigate serum paraoxonase/arylesterase activities and oxidation/oxidizability of apolipoprotein B-containing lipoproteins and several coronary artery disease risk factors, including homocysteine, high sensitive C-reactive protein, tumour necrosis factor-alpha, leptin and adiponectin in patients with schizophrenia. Oxidation of lipoproteins plays an important role in atherogenesis, and the enzyme paraoxonase has been shown to prevent lipoprotein oxidation. Furthermore, low paraoxonase activity has been suggested to predict coronary artery disease. Forty patients who fully met the fourth Diagnostic and Statistical Manual of Mental Disorders criteria for schizophrenia and 35 healthy control subjects were included in the study. Serum paraoxonase/arylesterase activities were determined spectrophotometrically. Malondialdehyde levels of apolipoprotein B-containing lipoproteins were determined before and after incubation with copper-sulphate, which yielded basal- and Delta-malondialdehyde values, respectively. Homocysteine and highly sensitive C-reactive protein levels were determined using a fluorescence-polarization immunoassay and immunonephelometry, respectively. Leptin and adiponectin levels were measured with radioimmunoassay and tumour necrosis factor-alpha was determined by enzyme linked immunosorbent assay. Serum paraoxonase and arylesterase activities were significantly lower and Delta-malondialdehyde levels were significantly higher in the schizophrenia group compared with the control group. However, there were not any significant differences in other parameters of the study between the study groups. There was a significant increase in body mass index and serum triglyceride and very low density lipoprotein cholesterol levels in the schizophrenic group after 6 weeks of treatment. These parameters were significantly increased in patients treated with atypical antipsychotics but not in patients treated with typic or long acting antipsychotics. The results of the present study suggest that patients with schizophrenia might have increased risk for coronary artery disease related to reduced serum paraoxonase activity and increased oxidizability of apolipoprotein B-containing lipoproteins.
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Affiliation(s)
- Asli Sarandol
- Department of Psychiatry, Uludag University Medical Faculty, Bursa, Turkey.
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Kim NS, Kang K, Cha MH, Kang BJ, Moon J, Kang BK, Yu BC, Kim YS, Choi SM, Bang OS. Decreased paraoxonase-1 activity is a risk factor for ischemic stroke in Koreans. Biochem Biophys Res Commun 2007; 364:157-62. [PMID: 17936248 DOI: 10.1016/j.bbrc.2007.09.119] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2007] [Accepted: 09/27/2007] [Indexed: 10/22/2022]
Abstract
Paraoxonase-1 (PON1) is an enzyme associated with HDL in blood and it is considered as an anti-oxidant factor due to its capability to prevent lipid oxidation. In vivo mouse studies also have shown that PON1 is one of the genetic risk factors contributing to atherosclerosis. In this study, we evaluated the serum PON1 activities of sex-age matched Korean healthy control and ischemic stroke patients, and investigated the association of PON1 activity with other metabolic parameters. Statistical analyses revealed that PON1 activity and HDL_cholesterol (HDL_C) in stroke patients were significantly decreased when compared with those of healthy control. Additionally, PON1 activity was negatively correlated with age, whereas it was positively correlated with HDL_C in a stroke group. Overall, the results of this study indicated that decreased serum PON1 activity should be considered as a risk factor for ischemic stroke in Koreans.
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Affiliation(s)
- No Soo Kim
- Department of Medical Research, Korea Institute of Oriental Medicine, Daejeon 305-811, Republic of Korea
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