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Soyut H. An in vitro Study: Inhibitory Effect of Carfilzomib on Human Serum Paraoxonase-1 (hPON1). INT J PHARMACOL 2022. [DOI: 10.3923/ijp.2022.522.526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Braschi A. Potential Protective Role of Blood Pressure-Lowering Drugs on the Balance between Hemostasis and Fibrinolysis in Hypertensive Patients at Rest and During Exercise. Am J Cardiovasc Drugs 2019; 19:133-171. [PMID: 30714087 DOI: 10.1007/s40256-018-00316-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In patients with hypertension, the triad represented by endothelial dysfunction, platelet hyperactivity, and altered fibrinolytic function disturbs the equilibrium between hemostasis and fibrinolysis and translates into a hypercoagulable state, which underlies the risk of thrombotic complications. This article reviews the scientific evidence regarding some biological effects of antihypertensive drugs, which can protect patients from the adverse consequences of hypertensive disease, improving endothelial function, enhancing antioxidant activity, and restoring equilibrium between hemostatic and fibrinolytic factors. These protective effects appear not to be mediated through blood pressure reduction and are not shared by all molecules of the same pharmacological class.
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Affiliation(s)
- Annabella Braschi
- Ambulatory of Cardiovascular Diseases, Via col. Romey n.10, 91100, Trapani, Italy.
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van 't Erve TJ. Strategies to decrease oxidative stress biomarker levels in human medical conditions: A meta-analysis on 8-iso-prostaglandin F 2α. Redox Biol 2018; 17:284-296. [PMID: 29775960 PMCID: PMC6007822 DOI: 10.1016/j.redox.2018.05.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 05/07/2018] [Accepted: 05/08/2018] [Indexed: 02/07/2023] Open
Abstract
The widespread detection of elevated oxidative stress levels in many medical conditions has led to numerous efforts to design interventions to reduce its effects. Efforts have been wide-ranging, from dietary changes to administration of antioxidants, supplements, e.g., omega-3-fatty acids, and many medications. However, there is still no systemic assessment of the efficacy of treatments for oxidative stress reduction across a variety of medical conditions. The goal of this meta-analysis is, by combining multiple studies, to quantitate the change in the levels of the popular oxidative stress biomarker 8-iso-prostaglandin F2α (8-iso-PGF2α) after a variety of treatment strategies in human populations. Nearly 350 unique publications with 180 distinct strategies were included in the analysis. For each strategy, the difference between pre- or placebo and post-treatment levels calculated using Hedges' g value of effect. In general, administration of antibiotics, antihyperlipidemic agents, or changes in lifestyle (g = - 0.63, - 0.54, and 0.56) had the largest effect. Administration of supplements, antioxidants, or changes in diet (g = - 0.09, - 0.28, - 0.12) had small quantitative effects. To fully interpret the effectiveness of these treatments, comparisons to the increase in g value for each medical condition is required. For example, antioxidants in populations with coronary artery disease (CAD) reduce the 8-iso-PGF2α levels by g = - 0.34 ± 0.1, which is quantitatively considered a small effect. However, CAD populations, in comparison to healthy populations, have an increase in 8-iso-PGF2α levels by g = 0.38 ± 0.04; therefore, the overall reduction of 8-iso-PGF2α levels is ≈ 90% by this treatment in this specific medical condition. In conclusion, 8-iso-PGF2α levels can be reduced not only by antioxidants but by many other strategies. Not all strategies are equally effective at reducing 8-iso-PGF2α levels. In addition, the effectiveness of any strategy can be assessed only in relation to the medical condition investigated.
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Affiliation(s)
- Thomas J van 't Erve
- Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, 27709 NC, USA; Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, 27709 NC, USA.
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Derosa G, Mugellini A, Pesce RM, D'Angelo A, Maffioli P. Barnidipine compared to lercanidipine in addition to losartan on endothelial damage and oxidative stress parameters in patients with hypertension and type 2 diabetes mellitus. BMC Cardiovasc Disord 2016; 16:66. [PMID: 27068332 PMCID: PMC4828780 DOI: 10.1186/s12872-016-0237-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 03/25/2016] [Indexed: 11/30/2022] Open
Abstract
Background Essential hypertension has been extensively reported to cause endothelial dysfunction. The aim of this study was to evaluate the effects of barnidipine or lercanidipine, in addition to losartan, on some parameters indicative of endothelial damage and oxidative stress in hypertensive, type 2 diabetic patients. Methods One hundred and fifty one patients were randomised to barnidipine, 20 mg/day, or lercanidipine, 20 mg/day, both in addition to losartan, 100 mg/day, for 6 months. We assessed BP every month, in addition, patients underwent ambulatory blood pressure monitoring (ABPM). We also assessed: fasting plasma glucose (FPG), glycated hemoglobin (HbA1c), some markers such as high-sensitivity C-reactive protein (Hs-CRP), tumor necrosis factor-α (TNF-α), metalloproteinase-2 (MMP-2) and -9 (MMP-9), soluble vascular adhesion protein-1 (sVCAM-1), soluble intercellular adhesion protein-1 (sICAM-1), isoprostanes and paraoxonase-1 (PON-1). Results Both barnidipine and lercanidipine resulted in a significant reduction in blood pressure, even if the reduction obtained with barnidipine + losartan was greater than that obtained with lercanidipine + losartan. Data recorded with ABPM also showed a similar trend. Barnidipine + losartan reduced the levels of Hs-CRP, TNF-α, sVCAM-1, sICAM-1, and isoprostanes both compared to baseline and to lercanidipine + losartan. Conclusions Barnidipine + losartan gave an improvement of some parameters indicative of endothelial damage and oxidative stress in diabetic and hypertensive patients. Trial registration NCT02064218, ClinicalTrials.gov
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Affiliation(s)
- Giuseppe Derosa
- Department of Internal Medicine and Therapeutics, University of Pavia, Fondazione IRCCS Policlinico San Matteo, Pavia, P.le C. Golgi, 2, 27100, Pavia, Italy. .,Center for the Study of Endocrine-Metabolic Pathophysiology and Clinical Research, University of Pavia, Pavia, Italy. .,Molecular Medicine Laboratory, University of Pavia, Pavia, Italy.
| | - Amedeo Mugellini
- Department of Internal Medicine and Therapeutics, University of Pavia, Fondazione IRCCS Policlinico San Matteo, Pavia, P.le C. Golgi, 2, 27100, Pavia, Italy
| | - Rosa Maria Pesce
- Department of Internal Medicine and Therapeutics, University of Pavia, Fondazione IRCCS Policlinico San Matteo, Pavia, P.le C. Golgi, 2, 27100, Pavia, Italy
| | - Angela D'Angelo
- Department of Internal Medicine and Therapeutics, University of Pavia, Fondazione IRCCS Policlinico San Matteo, Pavia, P.le C. Golgi, 2, 27100, Pavia, Italy.,Molecular Medicine Laboratory, University of Pavia, Pavia, Italy
| | - Pamela Maffioli
- Department of Internal Medicine and Therapeutics, University of Pavia, Fondazione IRCCS Policlinico San Matteo, Pavia, P.le C. Golgi, 2, 27100, Pavia, Italy.,PhD School in Experimental Medicine, University of Pavia, Pavia, Italy
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Derosa G, Mugellini A, Pesce RM, D'Angelo A, Maffioli P. Olmesartan Combined With Amlodipine on Oxidative Stress Parameters in Type 2 Diabetics, Compared With Single Therapies: A Randomized, Controlled, Clinical Trial. Medicine (Baltimore) 2016; 95:e3084. [PMID: 27043671 PMCID: PMC4998532 DOI: 10.1097/md.0000000000003084] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 02/22/2016] [Accepted: 02/22/2016] [Indexed: 12/03/2022] Open
Abstract
To evaluate the effects of a fixed combination of olmesartan/amlodipine compared with olmesartan or amlodipine alone on some parameters of endothelial damage in diabetic, hypertensive patients.We enrolled 221 patients; 74 were randomized to olmesartan 20 mg, 72 to amlodipine 10 mg, and 75 to olmesartan/amlodipine fixed combination 20/5 mg for 12 months. We assessed blood pressure monthly; in addition, we also assessed at baseline, and after 6 and 12 months, the following parameters: lipoprotein (a), myeloperoxidase (MPO), isoprostanes, and paraoxonase-1 (PON-1). Blood pressure values obtained with fixed olmesartan/amlodipine combination were significantly lower than those reached with single monotherapies. There was a reduction of lipoprotein (a), and isoprostanes levels with olmesartan/amlodipine fixed combination, both compared with baseline, and with single monotherapies. On the other hand, there was an increase of PON-1 with fixed olmesartan/amlodipine combination, both compared with baseline, and with single drugs. All treatments reduced MPO compared with baseline; however, in group-to-group comparison, MPO reduction was greater with olmesartan/amlodipine fixed combination. Fixed combination of olmesartan/amlodipine was more effective than single monotherapies in reducing oxidative stress, especially in increasing PON-1, and reducing isoprostanes levels in diabetic and hypertensive patients.
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Affiliation(s)
- Giuseppe Derosa
- From the Department of Internal Medicine and Therapeutics, University of Pavia, and Fondazione IRCCS Policlinico San Matteo (GD, AM, RMP, ADA, PM); Center for the Study of Endocrine-Metabolic Pathophysiology and Clinical Research (GD); Laboratory of Molecular Medicine (GD, ADA); and PhD School in Experimental Medicine (PM), University of Pavia, Pavia, Italy
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Türkeş C, Söyüt H, Beydemir Ş. Human serum paraoxonase-1 (hPON1):in vitroinhibition effects of moxifloxacin hydrochloride, levofloxacin hemihidrate, cefepime hydrochloride, cefotaxime sodium and ceftizoxime sodium. J Enzyme Inhib Med Chem 2014; 30:622-8. [DOI: 10.3109/14756366.2014.959511] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Söyüt H, Kaya ED, Beydemir S. Impact of antibacterial drugs on human serum paraoxonase-1 (hPON1) activity: an in vitro study. Asian Pac J Trop Biomed 2014; 4:603-9. [PMID: 25183328 DOI: 10.12980/apjtb.4.2014apjtb-2014-0059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 07/17/2014] [Indexed: 10/24/2022] Open
Abstract
OBJECTIVE To investigate the in vitro effects of the antibacterial drugs, meropenem trihydrate, piperacillin sodium, and cefoperazone sodium, on the activity of human serum paraoxonase (hPON1). METHODS hPON1 was purified from human serum using simple chromatographic methods, including DEAE-Sephadex anion exchange and Sephadex G-200 gel filtration chromatography. RESULTS The three antibacterial drugs decreased in vitro hPON1 activity. Inhibition mechanisms meropenem trihydrate was noncompetitive while piperacillin sodium and cefoperazone sodium were competitive. CONCLUSIONS Our results showed that antibacterial drugs significantly inhibit hPON1 activity, both in vitro, with rank order meropenem trihydrate piperacillin sodium cefoperazone sodium in vitro.
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Affiliation(s)
- Hakan Söyüt
- Department of Primary Education, Faculty of Education, Bayburt University, 69000 Bayburt, Turkey
| | - Elif Duygu Kaya
- Department of Food Engineering, Faculty of Engineering, Iğdır University, 76000 Iğdır, Turkey
| | - Sükrü Beydemir
- Department of Chemistry, Faculty of Science, Atatürk University, 25240 Erzurum, Turkey
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Kei A, Tellis C, Liberopoulos E, Tselepis A, Elisaf M. Effect of Switch to the Highest Dose of Rosuvastatin Versus Add-on-Statin Fenofibrate Versus Add-on-Statin Nicotinic Acid/Laropiprant on Oxidative Stress Markers in Patients with Mixed Dyslipidemia. Cardiovasc Ther 2014; 32:139-46. [DOI: 10.1111/1755-5922.12072] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Affiliation(s)
- Anastazia Kei
- Department of Internal Medicine; University of Ioannina Medical School; Ioannina Greece
| | - Constantinos Tellis
- Department of Biochemistry - Clinical Chemistry; University of Ioannina Chemistry School; Ioannina Greece
| | | | - Alexandros Tselepis
- Department of Biochemistry - Clinical Chemistry; University of Ioannina Chemistry School; Ioannina Greece
| | - Moses Elisaf
- Department of Internal Medicine; University of Ioannina Medical School; Ioannina Greece
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Effects of barnidipine on blood pressure and left ventricular diastolic function in patients with hypertension and metabolic syndrome: A 12-week, open-label noncomparison study. Curr Ther Res Clin Exp 2014; 69:207-20. [PMID: 24692799 DOI: 10.1016/j.curtheres.2008.06.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/28/2008] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Barnidipine is one of a new generation of dihydropyridine calcium-channel blockers. Despite evidence of favorable effects on blood pressure (BP) and insulin sensitivity, this drug has rarely been tested in hypertensive patients with metabolic syndrome (MS). OBJECTIVE The aim of this study was to evaluate the effects of barnidipine on BP and left ventricular (LV) diastolic function in patients with hypertension and MS. METHODS Consecutive subjects aged 18 to 75 years with systolic BP (SBP) of 140 to 179 mm Hg and/or diastolic BP (DBP) of 90 to 109 mm Hg and MS (based on Adult Treatment Panel III criteria) were assessed for inclusion in the study. Lifestyle changes according to current guidelines were recommended and barnidipine monotherapy 10 mg daily was initiated. All patients entered a 2-week run-in period. After a 6-week treatment period, the daily dosage was doubled for the remainder of the study in patients whose BP remained uncontrolled (≥140/≥90 mm Hg). We assessed the glycolipidic profile and LV structure and function using standard Doppler and tissue Doppler imaging (TDI) echocardiography before and after 12 weeks of treatment. Ambulatory BP records and electrocardiographic and echocardiographic tracings were coded and shipped to a central laboratory for blinded analysis. Possible adverse events (AEs) were recorded at predetermined intervals throughout the follow-up period and at unplanned intervals whenever an AE became known to the investigators. RESULTS Thirty-four consecutive patients were assessed for inclusion. Thirty consecutive patients (20 men, 10 women; mean {SD| age, 55.9 {10.3| years; 5 current smokers) were included in the study. At study entry, mean office SBP was 146 mm Hg, DBP was 87 mm Hg, and heart rate was 72 beats/min. At the study end, mean office SBP/DBP was <140/90 mm Hg in 20 patients (66.7%). From baseline to study end, 24-hour ambulatory BP decreased significantly by 12 and 8 mm Hg for SBP and DBP, respectively (both, P = 0.001). The smoothness index was 0.92 for SBP and 0.82 for DBP. Fasting plasma glucose concentration decreased significantly from 110 to 104 mg/dL (P = 0.001). Total cholesterol, high-density lipoprotein cholesterol, and low-density lipoprotein cholesterol concentrations did not change significantly. From baseline to study end, there were no significant changes in LV structure or systolic function (LV mass, 50.7 vs 50.6 g/ht(2.7); LV diastolic/systolic diameters, 47.50/29.80 vs 48.40/30.76 mm; wall motion score index, 1.0 vs 1.0; ejection fraction, 61% vs 60%), while the peak E/A velocity ratio on TDI increased from 1.078 to 1.245 (P = 0.009). No AEs (including AEs reflected by chemistry values) either unrelated or related to treatment were noted during the 12-week duration of the study. CONCLUSIONS In these hypertensive patients with MS, a 12-week treatment period with barnidipine in addition to lifestyle modifications was associated with significant reductions in 24-hour BP and BP variability, reduction in plasma glucose concentration, and improvement in LV diastolic relaxation. No significant changes in lipid concentrations, LV structure, or systolic function were found.
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Silva IT, Mello APQ, Damasceno NRT. Antioxidant and inflammatory aspects of lipoprotein-associated phospholipase A₂ (Lp-PLA₂): a review. Lipids Health Dis 2011; 10:170. [PMID: 21955667 PMCID: PMC3204246 DOI: 10.1186/1476-511x-10-170] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Accepted: 09/28/2011] [Indexed: 12/11/2022] Open
Abstract
The association of cardiovascular events with Lp-PLA2 has been studied continuously today. The enzyme has been strongly associated with several cardiovascular risk markers and events. Its discovery was directly related to the hydrolysis of the platelet-activating factor and oxidized phospholipids, which are considered protective functions. However, the hydrolysis of bioactive lipids generates lysophospholipids, compounds that have a pro-inflammatory function. Therefore, the evaluation of the distribution of Lp-PLA2 in the lipid fractions emphasized the dual role of the enzyme in the inflammatory process, since the HDL-Lp-PLA2 enzyme contributes to the reduction of atherosclerosis, while LDL-Lp-PLA2 stimulates this process. Recently, it has been verified that diet components and drugs can influence the enzyme activity and concentration. Thus, the effects of these treatments on Lp-PLA2 may represent a new kind of prevention of cardiovascular disease. Therefore, the association of the enzyme with the traditional assessment of cardiovascular risk may help to predict more accurately these diseases.
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Affiliation(s)
- Isis T Silva
- Departamento de Nutrição, Faculdade de Saúde Pública, Universidade de São Paulo, São Paulo, SP, Brazil
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de Ciuceis C, Pilu A, Rizzoni D, Porteri E, Muiesan ML, Salvetti M, Paini A, Belotti E, Zani F, Boari GEM, Rosei CA, Rosei EA. Effect of antihypertensive treatment on circulating endothelial progenitor cells in patients with mild essential hypertension. Blood Press 2011; 20:77-83. [PMID: 21114380 DOI: 10.3109/08037051.2010.535973] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
It has been reported that the number of circulating endothelial progenitor cells (EPCs) reflects the endogenous vascular repair ability, with the EPCs pool declining in the presence of cardiovascular risk factors. However, their relationship with hypertension and the effects of anti-hypertensive treatment remain unclear. We randomized 29 patients with mild essential hypertension to receive barnidipine up to 20 mg or hydrochlorothiazide (HCT) up to 25 mg. Circulating EPCs were isolated from peripheral blood at baseline and after 3 and 6 months of treatment. Mononuclear cells were cultured with endothelial basal medium supplemented with EGM SingleQuots. EPCs were identified by positive double staining for both FITC-labeled Ulex europaeus agglutinin I and Dil-labeled acethylated low-density lipoprotein. After 3 and 6 months of treatment, systolic and diastolic blood pressure (BP) were significantly reduced. No difference was observed between drugs. An increase in the number of EPCs was observed after 3 and 6 months of anti-hypertensive treatment (p < 0.05). Barnidipine significantly increased EPCs after 3 and 6 months of treatment, whereas no effect was observed with HCT. No statistically significant correlation was observed between EPCs and clinical BP values. Our data suggest that antihypertensive treatment may increase the number of EPCs. However, we observed a different effect of barnidipine and HCT on EPCs, suggesting that, beyond its BP lowering effect, barnidipine may elicit additional beneficial properties, related to a healthier vasculature.
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Affiliation(s)
- Carolina de Ciuceis
- Clinica Medica, Department of Medical and Surgical Sciences, University of Brescia, Italy
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Kostapanos MS, Spyrou AT, Tellis CC, Gazi IF, Tselepis AD, Elisaf M, Liberopoulos EN. Ezetimibe Treatment Lowers Indicators of Oxidative Stress in Hypercholesterolemic Subjects with High Oxidative Stress. Lipids 2011; 46:341-8. [PMID: 21359598 DOI: 10.1007/s11745-011-3539-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2010] [Accepted: 02/04/2011] [Indexed: 11/30/2022]
Affiliation(s)
- Michael S Kostapanos
- Department of Internal Medicine, Medical School, University of Ioannina, Ioannina, Greece
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Tziomalos K, Athyros VG, Karagiannis A, Mikhailidis DP. Dyslipidemia induced by drugs used for the prevention and treatment of vascular diseases. Open Cardiovasc Med J 2011; 5:85-9. [PMID: 21769302 PMCID: PMC3137137 DOI: 10.2174/1874192401105010085] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2010] [Revised: 01/04/2011] [Accepted: 01/06/2011] [Indexed: 12/20/2022] Open
Abstract
Dyslipidemia is a major vascular risk factor. Interestingly, several agents used for the prevention and treatment of vascular diseases have an adverse effect on the lipid profile. In addition, agents belonging to the same class (e.g. beta blockers) can have significantly different actions on lipid levels. We summarize the effects of drugs used for the prevention and treatment of vascular diseases on the lipid profile. These effects should be considered when selecting a specific agent, particularly in high-risk patients.
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Affiliation(s)
- Konstantinos Tziomalos
- Department of Clinical Biochemistry (Vascular Prevention Clinic) and Department of Surgery, Royal Free Campus, University College London Medical School, University College London (UCL), London, UK
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Muiesan ML, Salvetti M, Belotti E, Paini A, Rosei CA, Aggiusti C, Scotti A, de Ciuceis C, Rizzoni D, Rosei EA. Effects of barnidipine in comparison with hydrochlorothiazide on endothelial function, as assessed by flow mediated vasodilatation in hypertensive patients. Blood Press 2011; 20:244-51. [DOI: 10.3109/08037051.2011.561072] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Précourt LP, Amre D, Denis MC, Lavoie JC, Delvin E, Seidman E, Levy E. The three-gene paraoxonase family: physiologic roles, actions and regulation. Atherosclerosis 2010; 214:20-36. [PMID: 20934178 DOI: 10.1016/j.atherosclerosis.2010.08.076] [Citation(s) in RCA: 188] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Revised: 08/05/2010] [Accepted: 08/25/2010] [Indexed: 01/16/2023]
Abstract
The paraoxonase (PON) gene family is composed of three members (PON1, PON2, PON3) that share considerable structural homology and are located adjacently on chromosome 7 in humans. By far the most-studied member is PON1, a high-density lipoprotein-associated esterase/lactonase, also endowed with the capacity to hydrolyze organophosphates, but all the three proteins prevent oxidative stress and fight inflammation. They therefore seem central to a wide variety of human illnesses, including atherosclerosis, diabetes mellitus, mental disorders and inflammatory bowel disease. The major goal of this review is to highlight the regulation of each of the paraoxonase components by diverse nutritional molecules and pharmacological agents as well as a number of pathophysiological events, such as oxidative stress and inflammation. Considerable and detailed cell-based studies and animal model experiments have been provided to allow a thorough scrutiny of PON modulation, which will increase our understanding and ability to target these genes in order to efficiently increase their transcriptional activity and decrease the risks of developing different disorders.
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Affiliation(s)
- Louis-Philippe Précourt
- Research Centre, CHU-Sainte-Justine, Department of Nutrition, Université de Montréal, Montreal, Quebec, Canada
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Rizos EC, Spyrou A, Liberopoulos EN, Papavasiliou EC, Saougos V, Tselepis AD, Elisaf M. Effects of eprosartan on serum metabolic parameters in patients with essential hypertension. Open Cardiovasc Med J 2007; 1:22-6. [PMID: 18949087 PMCID: PMC2570567 DOI: 10.2174/1874192400701010022] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2007] [Revised: 10/01/2007] [Accepted: 10/02/2007] [Indexed: 11/22/2022] Open
Abstract
The effect of the anti-hypertensive drug eprosartan on metabolic parameters is currently not extensively documented. We evaluated the effect of eprosartan on parameters involved in atherogenesis, oxidative stress and clotting activity. This open-label unblinded intervention study included 40 adult patients with essential hypertension taking eprosartan. Eprosartan significantly reduced by 8% (p<0.001) the systolic and by 13% (p<.001) the diastolic blood pressure, and in-creased by 24% the time needed to produce oxidative by-products (p=0.001), a marker of oxidative stress. In contrast, ep-rosartan did not alter 8-isoprostane (8-epiPGF2a) levels, another marker of oxidative stress. Additionally, eprosartan re-duced by 14% aspartate aminotransferase and by 21% then alanine aminotransferase activity, while it had a neutral effect on the lipid profile and apolipoprotein levels and did not influence glucose homeostasis, creatinine and uric acid levels. Eprosartan did not affect the clotting/fibrinolytic status (estimated by plasminogen activator inhibitor 1, tissue plasmino-gen activator and a2 antiplasmin levels), or the enzymatic activity of the lipoprotein associated phospholipase A2 (Lp-PLA2) and paraoxonase 1 (PON1). In conclusion, eprosartan should be mainly considered as an anti-hypertensive agent with neutral effects on most of the metabolic parameters in hypertensive patients.
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Affiliation(s)
- Evangelos C Rizos
- Department of Internal Medicine, Medical School, University of Ioannina, 45110 Ioannina, Greece
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