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Jud P, Meinitzer A, Strohmaier H, Arefnia B, Wimmer G, Obermayer-Pietsch B, Foris V, Kovacs G, Odler B, Moazedi-Fürst F, Brodmann M, Hafner F. Association of amino acids and parameters of bone metabolism with endothelial dysfunction and vasculopathic changes in limited systemic sclerosis. Front Med (Lausanne) 2023; 10:1193121. [PMID: 37425312 PMCID: PMC10327605 DOI: 10.3389/fmed.2023.1193121] [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: 03/24/2023] [Accepted: 06/07/2023] [Indexed: 07/11/2023] Open
Abstract
Objectives Pathways contributing to endothelial dysfunction in patients with limited cutaneous systemic sclerosis (lcSSc) are largely unknown. The aim of this study was to investigate potential associations of amino acids and parameters of bone metabolism with endothelial dysfunction and vasculopathy-related changes in patients with lcSSc and early-stage vasculopathy. Methods Amino acids, calciotropic parameters, including 25-hydroxyvitamin D and parathyroid hormone (PTH), and bone turnover parameters, including osteocalcin and N-terminal peptide of procollagen-3 (P3NP), were measured in 38 lcSSc patients and 38 controls. Endothelial dysfunction was assessed by biochemical parameters, pulse-wave analysis, flow-mediated and nitroglycerine-mediated dilation. Additionally, vasculopathy-related and SSc-specific clinical changes including capillaroscopic, skin, renal, pulmonary, gastrointestinal and periodontal parameters were recorded. Results No significant differences in amino acids, calciotropic and bone turnover parameters were observed between lcSSc patients and controls. In patients with lcSSc, several significant correlations were found between selected amino acids, parameters of endothelial dysfunction, vasculopathy-related and SSc-specific clinical changes (all with p < 0.05). In addition, significant correlations were observed between PTH and 25-hydroxyvitamin D with homoarginine, and between osteocalcin, PTH and P3NP with modified Rodnan skin score and selected periodontal parameters (all with p < 0.05). Vitamin D deficiency defined as 25-hydroxyvitamin D < 20 ng/ml was associated with the presence of puffy finger (p = 0.046) and early pattern (p = 0.040). Conclusion Selected amino acids may affect endothelial function and may be associated to vasculopathy-related and clinical changes in lcSSc patients, while the association with parameters of bone metabolism seems to be minor.
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Affiliation(s)
- Philipp Jud
- Division of Angiology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Andreas Meinitzer
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - Heimo Strohmaier
- Center of Medical Research (ZMF), Medical University of Graz, Graz, Austria
| | - Behrouz Arefnia
- Division of Restorative Dentistry, Endodontics, Periodontology and Prosthodontics, Department of Dental Medicine and Oral Health, Medical University of Graz, Graz, Austria
| | - Gernot Wimmer
- Division of Restorative Dentistry, Endodontics, Periodontology and Prosthodontics, Department of Dental Medicine and Oral Health, Medical University of Graz, Graz, Austria
| | - Barbara Obermayer-Pietsch
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Endocrinology Lab Platform, Medical University of Graz, Graz, Austria
| | - Vasile Foris
- Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria
| | - Gabor Kovacs
- Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria
| | - Balazs Odler
- Division of Nephrology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Florentine Moazedi-Fürst
- Division of Rheumatology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Marianne Brodmann
- Division of Angiology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Franz Hafner
- Division of Angiology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
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Bladowski M, Szahidewicz-Krupska E, Wiśniewski J, Fortuna P, Chojdak-Łukasiewicz J, Budrewicz S, Fleszar M, Doroszko A. Changes in the Plasma and Platelet Nitric Oxide Biotransformation Metabolites during Ischemic Stroke-A Dynamic Human LC/MS Metabolomic Study. Antioxidants (Basel) 2022; 11:antiox11050955. [PMID: 35624819 PMCID: PMC9137966 DOI: 10.3390/antiox11050955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 05/04/2022] [Accepted: 05/10/2022] [Indexed: 12/10/2022] Open
Abstract
Despite improvement in the management of modifiable cardiovascular risk factors, ischemic stroke remains the leading cause of morbidity and mortality in the adult population. The aim of this study was to analyze the time-dependent dynamic differences in expression of the nitric oxide (NO) metabolic pathway in the platelet and plasma compartment between subjects with and without ischemic stroke. Additionally, the interplay between these parameters and platelet aggregation was investigated. A total of 418 patients in acute phase of non-cardioembolic stroke were investigated. Following the inclusion and exclusion criteria, finally 40 subjects with stroke and 39 demographically matched healthy participants were enrolled. Neurological physical examination, followed by assessment of the platelet and plasma levels of the nitric oxide synthase (NOS) inhibitors, including asymmetric dimethylarginine (ADMA) and symmetric dimethylarginine (SDMA), as well as NOS substrate-L-Arginine were performed dynamically three times within the first 24-h, then on the 3rd and 7th day after the stroke onset, which was compared with the healthy control. The platelet L-Arginine concentration was significantly higher on the 1st and 3rd day of stroke, while the plasma levels were significantly lower on exact days in comparison to the control. The competitive NOS-inhibitors in platelets were stably elevated in stroke subjects, whereas no significant differences in plasma compartment were noted. The arachidonic-acid-induced platelet aggregation was negatively associated with the platelet NOS substrate bioavailability, as assessed by the L−Arginine ADMA-ratio on the 3rd and 7th day. Subjects with non-cardioembolic ischemic stroke are characterized by elevated platelet levels of NOS inhibitors. Management of stroke results in increasing the platelet L-Arginine concentration and subsequent NO bioavailability in the platelet compartment.
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Affiliation(s)
- Maciej Bladowski
- Department and Clinic of Internal Medicine, Hypertension and Clinical Oncology, Faculty of Medicine, Wroclaw Medical University, Borowska 213 Str., 50-556 Wroclaw, Poland; (M.B.); (E.S.-K.)
| | - Ewa Szahidewicz-Krupska
- Department and Clinic of Internal Medicine, Hypertension and Clinical Oncology, Faculty of Medicine, Wroclaw Medical University, Borowska 213 Str., 50-556 Wroclaw, Poland; (M.B.); (E.S.-K.)
| | - Jerzy Wiśniewski
- Department of Medical Biochemistry, Wroclaw Medical University, Chalubinskiego 10 Str., 50-368 Wroclaw, Poland; (J.W.); (P.F.); (M.F.)
- Department of Biochemistry, Molecular Biology and Biotechnology, Wroclaw University of Science and Technology, Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Paulina Fortuna
- Department of Medical Biochemistry, Wroclaw Medical University, Chalubinskiego 10 Str., 50-368 Wroclaw, Poland; (J.W.); (P.F.); (M.F.)
| | - Justyna Chojdak-Łukasiewicz
- Department and Clinic of Neurology, Wroclaw Medical University, Borowska 213 Str., 50-556 Wroclaw, Poland; (J.C.-Ł.); (S.B.)
| | - Slawomir Budrewicz
- Department and Clinic of Neurology, Wroclaw Medical University, Borowska 213 Str., 50-556 Wroclaw, Poland; (J.C.-Ł.); (S.B.)
| | - Mariusz Fleszar
- Department of Medical Biochemistry, Wroclaw Medical University, Chalubinskiego 10 Str., 50-368 Wroclaw, Poland; (J.W.); (P.F.); (M.F.)
| | - Adrian Doroszko
- Department and Clinic of Internal Medicine, Hypertension and Clinical Oncology, Faculty of Medicine, Wroclaw Medical University, Borowska 213 Str., 50-556 Wroclaw, Poland; (M.B.); (E.S.-K.)
- Correspondence: ; Tel.: +48-71-736-4000
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Cyperus esculentus L. and Tetracarpidium conophorum Müll. Arg. Supplemented Diet Improved Testosterone Levels, Modulated Ectonucleotidases and Adenosine Deaminase Activities in Platelets from L-NAME-Stressed Rats. Nutrients 2021; 13:nu13103529. [PMID: 34684530 PMCID: PMC8541559 DOI: 10.3390/nu13103529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/22/2021] [Accepted: 09/24/2021] [Indexed: 02/07/2023] Open
Abstract
In hypertensive individuals, platelet morphology and function have been discovered to be altered, and this has been linked to the development of vascular disease, including erectile dysfunction (ED). The impact of nutritional supplementation with Cyperus esculentus (tiger nut, TN) and Tetracarpidium conophorum (walnut, WN) on androgen levels, ectonucleotidases, and adenosine deaminase (ADA) activities in platelets from L-NAME (Nω-nitro-L-arginine methyl ester hydrochloride) challenged rats were investigated. We hypothesized that these nuts may show a protective effect on platelets aggregation and possibly enhance the sex hormones, thereby reverting vasoconstriction. Wistar rats (male; 250-300 g; n = 10) were grouped into seven groups as follows: basal diet control group (I); basal diet/L-NAME/Viagra (5 mg/kg/day) as positive control group (II); ED-induced group (basal diet/L-NAME) (III); diet supplemented processed TN (20%)/L-NAME (IV); diet supplemented raw TN (20%)/L-NAME (V); diet supplemented processed WN (20%)/L-NAME (VI); and diet supplemented raw WN (20%)/L-NAME (VII). The rats were given their regular diet for 2 weeks prior to actually receiving L-NAME (40 mg/kg/day) for ten days to induce hypertension. Platelet androgen levels, ectonucleotidases, and ADA were all measured. L-NAME considerably lowers testosterone levels (54.5 ± 2.2; p < 0.05). Supplementing the TN and WN diets revealed improved testosterone levels as compared to the control (306.7 ± 5.7), but luteinizing hormone levels remained unchanged. Compared to control groups, the L-NAME-treated group showed a rise in ATP (127.5%) hydrolysis and ADA (116.7%) activity, and also a decrease in ADP (76%) and AMP (45%) hydrolysis. Both TN and WN supplemented diets resulted in substantial (p < 0.05) reversal effects. Enhanced testosterone levels and modulation of the purinergic system in platelets by TN and WN could be one of the mechanisms by which they aid in vasoconstriction control.
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Koay YC, Chen YC, Wali JA, Luk AWS, Li M, Doma H, Reimark R, Zaldivia MTK, Habtom HT, Franks AE, Fusco-Allison G, Yang J, Holmes A, Simpson SJ, Peter K, O’Sullivan JF. Plasma levels of trimethylamine-N-oxide can be increased with 'healthy' and 'unhealthy' diets and do not correlate with the extent of atherosclerosis but with plaque instability. Cardiovasc Res 2021; 117:435-449. [PMID: 32267921 PMCID: PMC8599768 DOI: 10.1093/cvr/cvaa094] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 02/12/2020] [Accepted: 04/02/2020] [Indexed: 12/14/2022] Open
Abstract
AIMS The microbiome-derived metabolite trimethylamine-N-oxide (TMAO) has attracted major interest and controversy both as a diagnostic biomarker and therapeutic target in atherothrombosis. METHODS AND RESULTS Plasma TMAO increased in mice on 'unhealthy' high-choline diets and notably also on 'healthy' high-fibre diets. Interestingly, TMAO was found to be generated by direct oxidation in the gut in addition to oxidation by hepatic flavin-monooxygenases. Unexpectedly, two well-accepted mouse models of atherosclerosis, ApoE-/- and Ldlr-/- mice, which reflect the development of stable atherosclerosis, showed no association of TMAO with the extent of atherosclerosis. This finding was validated in the Framingham Heart Study showing no correlation between plasma TMAO and coronary artery calcium score or carotid intima-media thickness (IMT), as measures of atherosclerosis in human subjects. However, in the tandem-stenosis mouse model, which reflects plaque instability as typically seen in patients, TMAO levels correlated with several characteristics of plaque instability, such as markers of inflammation, platelet activation, and intraplaque haemorrhage. CONCLUSIONS Dietary-induced changes in the microbiome, of both 'healthy' and 'unhealthy' diets, can cause an increase in the plasma level of TMAO. The gut itself is a site of significant oxidative production of TMAO. Most importantly, our findings reconcile contradictory data on TMAO. There was no direct association of plasma TMAO and the extent of atherosclerosis, both in mice and humans. However, using a mouse model of plaque instability we demonstrated an association of TMAO plasma levels with atherosclerotic plaque instability. The latter confirms TMAO as being a marker of cardiovascular risk.
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Affiliation(s)
- Yen Chin Koay
- Heart Research Institute, The University of Sydney, Sydney, NSW, Australia
- Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- Central Clinical School, Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
| | - Yung-Chih Chen
- Baker Heart & Diabetes Institute, Melbourne, VIC, Australia
| | - Jibran A Wali
- Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW, Australia
| | - Alison W S Luk
- Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW, Australia
| | - Mengbo Li
- Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- School of Mathematics and Statistics, The University of Sydney, Sydney, NSW, Australia
| | - Hemavarni Doma
- Baker Heart & Diabetes Institute, Melbourne, VIC, Australia
| | - Rosa Reimark
- Baker Heart & Diabetes Institute, Melbourne, VIC, Australia
| | | | - Habteab T Habtom
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne, VIC, Australia
- Centre for Future Landscapes, La Trobe University, Melbourne, VIC, Australia
| | - Ashley E Franks
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne, VIC, Australia
- Centre for Future Landscapes, La Trobe University, Melbourne, VIC, Australia
| | - Gabrielle Fusco-Allison
- Heart Research Institute, The University of Sydney, Sydney, NSW, Australia
- Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- Central Clinical School, Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
| | - Jean Yang
- Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- School of Mathematics and Statistics, The University of Sydney, Sydney, NSW, Australia
| | - Andrew Holmes
- Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW, Australia
| | - Stephen J Simpson
- Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW, Australia
| | | | - John F O’Sullivan
- Heart Research Institute, The University of Sydney, Sydney, NSW, Australia
- Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
- Central Clinical School, Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
- Department of Cardiology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
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5
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Grosse GM, Schwedhelm E, Worthmann H, Choe CU. Arginine Derivatives in Cerebrovascular Diseases: Mechanisms and Clinical Implications. Int J Mol Sci 2020; 21:ijms21051798. [PMID: 32150996 PMCID: PMC7084464 DOI: 10.3390/ijms21051798] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 02/27/2020] [Accepted: 03/01/2020] [Indexed: 02/07/2023] Open
Abstract
The amino acid L-arginine serves as substrate for the nitric oxide synthase which is crucial in vascular function and disease. Derivatives of arginine, such as asymmetric (ADMA) and symmetric dimethylarginine (SDMA), are regarded as markers of endothelial dysfunction and have been implicated in vascular disorders. While there is a variety of studies consolidating ADMA as biomarker of cerebrovascular risk, morbidity and mortality, SDMA is currently emerging as an interesting metabolite with distinct characteristics in ischemic stroke. In contrast to dimethylarginines, homoarginine is inversely associated with adverse events and mortality in cerebrovascular diseases and might constitute a modifiable protective risk factor. This review aims to provide an overview of the current evidence for the pathophysiological role of arginine derivatives in cerebrovascular ischemic diseases. We discuss the complex mechanisms of arginine metabolism in health and disease and its potential clinical implications in diverse aspects of ischemic stroke.
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Affiliation(s)
- Gerrit M. Grosse
- Department of Neurology, Hannover Medical School, 30625 Hannover, Germany;
- Correspondence:
| | - Edzard Schwedhelm
- Institute of Clinical Pharmacology and Toxicology, University Medical Center Hamburg-Eppendorf, 20249 Hamburg, Germany;
- DZHK (Deutsches Zentrum für Herz-Kreislauf-Forschung e.V.), partner site Hamburg/Kiel/Lübeck, 20249 Hamburg, Germany
| | - Hans Worthmann
- Department of Neurology, Hannover Medical School, 30625 Hannover, Germany;
| | - Chi-un Choe
- Department of Neurology, University Medical Center Hamburg-Eppendorf, 20249 Hamburg, Germany;
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Gawrys J, Gajecki D, Szahidewicz-Krupska E, Doroszko A. Intraplatelet L-Arginine-Nitric Oxide Metabolic Pathway: From Discovery to Clinical Implications in Prevention and Treatment of Cardiovascular Disorders. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:1015908. [PMID: 32215167 PMCID: PMC7073508 DOI: 10.1155/2020/1015908] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 02/12/2020] [Indexed: 12/31/2022]
Abstract
Despite the development of new drugs and other therapeutic strategies, cardiovascular disease (CVD) remains still the major cause of morbidity and mortality in the world population. A lot of research, performed mostly in the last three decades, revealed an important correlation between "classical" demographic and biochemical risk factors for CVD, (i.e., hypercholesterolemia, hyperhomocysteinemia, smoking, renal failure, aging, diabetes, and hypertension) with endothelial dysfunction associated directly with the nitric oxide deficiency. The discovery of nitric oxide and its recognition as an endothelial-derived relaxing factor was a breakthrough in understanding the pathophysiology and development of cardiovascular system disorders. The nitric oxide synthesis pathway and its regulation and association with cardiovascular risk factors were a common subject for research during the last decades. As nitric oxide synthase, especially its endothelial isoform, which plays a crucial role in the regulation of NO bioavailability, inhibiting its function results in the increase in the cardiovascular risk pattern. Among agents altering the production of nitric oxide, asymmetric dimethylarginine-the competitive inhibitor of NOS-appears to be the most important. In this review paper, we summarize the role of L-arginine-nitric oxide pathway in cardiovascular disorders with the focus on intraplatelet metabolism.
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Affiliation(s)
- Jakub Gawrys
- Department of Internal Medicine, Hypertension and Clinical Oncology, Wroclaw Medical University, Poland
| | - Damian Gajecki
- Department of Internal Medicine, Hypertension and Clinical Oncology, Wroclaw Medical University, Poland
| | - Ewa Szahidewicz-Krupska
- Department of Internal Medicine, Hypertension and Clinical Oncology, Wroclaw Medical University, Poland
| | - Adrian Doroszko
- Department of Internal Medicine, Hypertension and Clinical Oncology, Wroclaw Medical University, Poland
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Nakao T, Yasumoto A, Tokuoka S, Kita Y, Kawahara T, Daimon M, Yatomi Y. The impact of night-shift work on platelet function in healthy medical staff. J Occup Health 2018; 60:324-332. [PMID: 29669967 PMCID: PMC6078842 DOI: 10.1539/joh.2018-0027-fs] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Objectives: Rotating shift work has been reported to increase the risk of cardiovascular diseases. Vascular endothelial dysfunction and platelet activation are among the leading causes of thrombus formation in patients with myocardial infarction or stroke. Endothelial function has been shown to be impaired immediately after night-shift work; however, it is not known whether platelets are also activated. The aim of this study was to investigate the acute impact of night-shift work on platelet function. Methods: This observational study included 11 healthy medical staff members (seven women, median age 32 years). We examined each subject's platelet aggregation rates and the serum concentrations of eicosanoid mediators after night-shift work and on day-shift work without preceding night-shift work (baseline). Results: Platelet aggregation did not differ from baseline levels after night-shift work. However, serum cyclooxygenase (COX)-metabolized eicosanoid mediators, particularly thromboxane (Tx) B2 (a stable metabolite of TxA2 and the most important marker of platelet activation), were significantly higher after the night-shift than at baseline (median 65.3 vs 180.4 ng/ml). Conclusions: Although platelet aggregation did not increase, there was an increase in serum COX-metabolized eicosanoid mediators such as TxB2 in healthy medical staff after night-shift work. This platelet hypersensitivity may be one of the mechanisms underlying the significant association between night-shift work and adverse cardiovascular outcomes.
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Affiliation(s)
- Tomoko Nakao
- Department of Clinical Laboratory, The University of Tokyo Hospital
| | - Atsushi Yasumoto
- Department of Clinical Laboratory, The University of Tokyo Hospital
| | - Suzumi Tokuoka
- Department of Lipidomics, Graduate School of Medicine, The University of Tokyo
| | - Yoshihiro Kita
- Department of Lipidomics, Graduate School of Medicine, The University of Tokyo
| | - Takuya Kawahara
- Biostatistics Division, Clinical Research Support Center, The University of Tokyo Hospital
| | - Masao Daimon
- Department of Clinical Laboratory, The University of Tokyo Hospital
| | - Yutaka Yatomi
- Department of Clinical Laboratory, The University of Tokyo Hospital
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DiNicolantonio JJ, O'Keefe JH, McCarty MF. Targeting aspirin resistance with nutraceuticals: a possible strategy for reducing cardiovascular morbidity and mortality. Open Heart 2017; 4:e000642. [PMID: 28912955 PMCID: PMC5589004 DOI: 10.1136/openhrt-2017-000642] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/15/2017] [Indexed: 12/28/2022] Open
Affiliation(s)
| | - James H O'Keefe
- Preventive Cardiology, Saint Luke's Mid America Heart Institute, Kansas, USA
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Asymmetric dimethylarginine predicts left atrial appendage thrombus in patients with non-valvular atrial fibrillation. Thromb Res 2015; 136:1156-9. [DOI: 10.1016/j.thromres.2015.10.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 10/08/2015] [Accepted: 10/09/2015] [Indexed: 11/21/2022]
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10
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L-arginine-nitric oxide pathway and oxidative stress in plasma and platelets of patients with pre-eclampsia. Hypertens Res 2013; 36:783-8. [PMID: 23575380 DOI: 10.1038/hr.2013.34] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Revised: 01/03/2013] [Accepted: 01/31/2013] [Indexed: 11/08/2022]
Abstract
Pre-eclampsia (PE), a syndrome of pregnancy-induced hypertension, continues to be a leading cause of maternal and fetal morbidity and mortality. The aim of this study was to investigate whether changes in oxidative status are correlated with alterations in the L-arginine-nitric oxide pathway and platelet aggregation in PE. Plasma and platelets from women with PE (n=24) or normotensive pregnancy (NP, n=27) recruited in the third trimester of gestation were used to measure oxidative damage assessed by protein carbonyl content, antioxidant activities of superoxide dismutase (SOD), catalase (CAT) and nitrite levels. Transport of L-[(3)H]-arginine, as well as the activities of the nitric oxide (NO) synthase (eNOS and inducible NO synthase (iNOS)) and platelet aggregation, were also evaluated. Plasma nitrite levels and the activities of SOD and CAT were reduced in PE (5.2±2.7, 3.4±0.8, 0.3±0.4, respectively, P<0.05) compared with NP (8.7±2.3, 6.7±3.1, 1.0±0.5, respectively), whereas protein carbonyl content and L-arginine levels were not significantly different between PE and NP groups. In platelets, L-arginine transport was reduced in PE (19.2±10.5, P<0.05) compared with NP (62.0±31.1), whereas the NOS activity, eNOS and iNOS expression, nitrite levels and platelet aggregation were unaffected. Protein carbonyl content was increased, and CAT activity was reduced in platelets from PE (0.03±0.02, 0.55±0.30, respectively, P<0.05), compared with NP (0.005±0.005, 1.01±0.36, respectively). The data suggest that a systemic impairment of antioxidant defense mechanisms is associated with decreased plasma nitrite levels, which may contribute to hypertension in PE. Oxidative stress may contribute to the reduced influx of L-arginine in platelets. Compensatory mechanisms may contribute to the maintenance of NO production and its modulatory role on platelet function.
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Low plasma levels of L-arginine, impaired intraplatelet nitric oxide and platelet hyperaggregability: implications for cardiovascular disease in depressive patients. J Affect Disord 2012; 140:187-92. [PMID: 22424639 DOI: 10.1016/j.jad.2012.02.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Accepted: 02/05/2012] [Indexed: 11/22/2022]
Abstract
BACKGROUND Major depression (MD) is an independent cardiovascular risk factor, but the exact mechanisms are not clear. In this study we have investigated the intraplatelet L-arginine-nitric oxide (NO) pathway and platelet function in depressive patients. METHODS Nineteen unmedicated patients with MD (34±4years) and 19 control subjects (CS, 34±3years) were included. L-[(3)H]-arginine influx, NO synthase (NOS) activity and intracellular cGMP levels were evaluated in platelets, as well as the expression of eNOS, iNOS, arginase and soluble guanylate cyclase (sGC), platelet aggregation and the systemic amino acid profile in MD patients and CS. RESULTS L-arginine influx (pmol/10(9)cells/min) in platelets was reduced from 46.2±9.5 to 20.02±2.12 in depression. NOS activity (pmol/10(8) cells) was diminished in MD patients (0.09±0.01) compared to CS (0.17±0.01). Intracellular cGMP levels were also impaired in MD patients associated with hyperaggregability. Moreover, the concentration of plasma L-arginine was reduced by 20% in MD patients. The expression of eNOS, iNOS, arginase II and sGC in platelet lysates was not affected by MD. LIMITATIONS Small number of patients in the study. CONCLUSIONS This study has demonstrated an impairment of L-arginine-NO signaling in platelets from MD patients, suggesting a role in platelet activation and cardiovascular events.
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de Meirelles LR, Resende ADC, Matsuura C, Salgado A, Pereira NR, Cascarelli PG, Mendes-Ribeiro AC, Brunini TMC. Platelet activation, oxidative stress and overexpression of inducible nitric oxide synthase in moderate heart failure. Clin Exp Pharmacol Physiol 2012; 38:705-10. [PMID: 21806669 DOI: 10.1111/j.1440-1681.2011.05580.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
1. Chronic heart failure (CHF) is a common disabling disorder associated with thromboembolic events, the genesis of which is not yet fully understood. Nitric oxide (NO), derived from the vascular endothelium and platelets, has an important role in the physiological regulation of blood flow. It is generated from the amino acid L-arginine via NO synthase (NOS). 2. The main objective of the present study was to investigate NO production and its relationship with platelet aggregation, oxidative stress, inflammation and related amino acids in patients with moderate CHF. The expression and activity of NOS isoforms were analysed by western blotting and conversion of L-[(3)H]-arginine to L-[(3)H]-citrulline, respectively, in CHF patients (n = 12) and healthy controls (n = 15). Collagen- and ADP-induced platelet aggregation, oxidative stress (thiobarbituric acid-reactive substances (TBARS) formation and superoxide dismutase (SOD) activity) and plasma levels of amino acids and inflammatory markers (fibrinogen and C-reactive protein (CRP)) were also determined. 3. Both collagen- and ADP-induced platelet aggregation were increased in CHF patients compared with controls. Platelets from CHF patients did not show any changes in NOS activity in the presence of overexpression of inducible NOS. Systemic and intraplatelet TBARS production was elevated, whereas SOD activity was decreased in CHF patients. l-arginine plasma concentrations were lower in CHF patients than in controls. Systemic levels of CRP and fibrinogen were increased in CHF patients. 4. The results show that, in patients with moderate CHF, there is platelet activation and reduced intraplatelet NO bioavailability due to oxidative stress, which suggests a role for platelets in the prothrombotic state.
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Affiliation(s)
- Luisa R de Meirelles
- Departament of Pharmacology and Psychobiology, State University of Rio de Janeiro, Rio de Janeiro, Brazil
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13
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Matsuura C, Moraes TL, Barbosa JB, Moss MB, Siqueira MAS, Mann GE, Neto ML, Brunini TMC, Mendes-Ribeiro AC. Nitric oxide activity in platelets of dengue haemorrhagic fever patients: the apparent paradoxical role of ADMA and l-NMMA. Trans R Soc Trop Med Hyg 2012; 106:174-9. [PMID: 22284722 DOI: 10.1016/j.trstmh.2011.10.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Revised: 10/07/2011] [Accepted: 10/07/2011] [Indexed: 11/29/2022] Open
Abstract
Dengue haemorrhagic fever (DHF) is a prevalent acute disease that occurs in patients infected by an arbovirus in tropical and subtropical regions. We have previously shown increased intraplatelet nitric oxide (NO) production in patients with dengue fever associated with reduced platelet aggregation. In this study, l-arginine transport as well as expression and activity of nitric oxide synthase (NOS) isoforms in the presence or absence of l-arginine analogues were examined in 23 DHF patients. l-arginine transport and NOS activity in platelets were increased in patients with DHF compared with controls. However, platelet endothelial NOS (eNOS) and inducible (iNOS) protein levels did not differ between healthy controls and DHF patients. Endogenous or exogenous analogues did not inhibit platelet NOS activity from DHF patients. In contrast, endogenous l-arginine analogues [N(G)-monomethyl-l-arginine (l-NMMA) and asymmetric dimethylarginine (ADMA)] inhibited NOS activity in platelets from healthy subjects. These results show the first evidence that the intraplatelet l-arginine-NO pathway is activated in DHF patients. The lack of inhibition of NO formation in vitro by all l-arginine analogues tested in DHF platelets may suggest another mechanism by which NOS activity can be regulated.
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Affiliation(s)
- Cristiane Matsuura
- Departamento de Farmacologia e Psicobiologia, Instituto de Biologia, Universidade do Estado do Rio de Janeiro, Av. 28 de Setembro 87, Rio de Janeiro 22551-030, Brazil
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14
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Zhang Q, Chen N, Qiu W, Xu X, Wang D, Tsao PS, Jin H. Asymmetric dimethylarginine impairs fibrinolytic activity in human umbilical vein endothelial cells via p38 MAPK and NF-κB pathways. Thromb Res 2011; 128:42-6. [PMID: 21429569 DOI: 10.1016/j.thromres.2011.02.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2010] [Revised: 02/18/2011] [Accepted: 02/20/2011] [Indexed: 02/05/2023]
Abstract
INTRODUCTION Asymmetric dimethylarginine (ADMA) is a potent endogenous inhibitor of nitric oxide (NO) synthase. An increased synthesis and/or a reduced catabolism of ADMA might contribute to the onset and progression of thrombosis. The present study was designed to evaluate the effect of ADMA on fibrinolytic factors in endothelial cells, and to investigate the cellular mechanisms. MATERIALS AND METHODS Human umbilical vein endothelial cells (HUVECs) were treated with different concentrations of ADMA for various periods; Then HUVECs were preincubated with NO precursor (L-arginine), MAPK inhibitors, or NF-κB inhibitor (PDTC) before ADMA treatment to repeat the experiment. Protein levels of tissue plasminogen activator (tPA) and plasminogen activator inhibitor-1 (PAI-1), and NF-κB activity were measured by ELISA; mRNA levels of tPA and PAI-1 were assayed by qRT-PCR; The activation of MAPK was characterized by western blot analysis. RESULTS (1) ADMA decreased tPA antigen levels in time- and concentration-dependent manners, with the maximum effect of 30 μmol/L ADMA for 48h (control 109.01 ± 4.15 ng/ml vs ADMA 86.76 ± 5.95 ng/ml, p<0.01); (2) 30 μmol/L ADMA elevated antigen levels of PAI-1 in a time-dependent manner, with the maximum effect of 30 μmol/L ADMA for 48 h (control 2721.12 ± 278.02 ng/ml vs. ADMA 3435.78 ± 22.33ng/ml, p<0.05); (3) ADMA reduced tPA mRNA levels and increased PAI-1 mRNA levels; (4) L-arginine, SB203580 (p38 MAPK inhibitor) and PDTC attenuated the effects of ADMA on tPA and PAI-1 significantly. (5) ADMA induced a rapid phosphorylation of p38 MAPK, and stimulated NF-κB activity greatly. CONCLUSIONS ADMA may accelerate thrombosis development by impairing fibrinolytic activity in vascular via inhibiting nitric oxide production and then activating its downstream p38 MAPK and NF-κB pathways.
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Affiliation(s)
- Qin Zhang
- The First Affiliated Hospital of Shantou University Medical College, Shantou, 515041, China
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15
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Assumpção CRL, Brunini TMC, Pereira NR, Godoy-Matos AF, Siqueira MAS, Mann GE, Mendes-Ribeiro AC. Insulin resistance in obesity and metabolic syndrome: is there a connection with platelet l-arginine transport? Blood Cells Mol Dis 2011; 45:338-42. [PMID: 21078563 DOI: 10.1016/j.bcmd.2010.10.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2010] [Revised: 09/30/2010] [Accepted: 10/01/2010] [Indexed: 01/08/2023]
Abstract
OBJECTIVE Nitric oxide (NO) is a short-lived gaseous messenger with multiple physiological functions including regulation of blood flow, platelet adhesion and aggregation inhibition. NO synthases (NOS) catalyze the conversion of cationic amino acid L-arginine in L-citrulline and NO. Despite an increasing prevalence of obesity and metabolic syndrome (MetS) in the last decades, the exact mechanisms involved in the pathogenesis and cardiovascular complications are not fully understood. We have examined the effects of obesity and MetS on the L-arginine-NO-cGMP pathway in platelets from a population of adolescents. MATERIALS A total of twenty six adolescent patients (13 with obesity and 13 with MetS) and healthy volunteers (n=14) participated in this study. Transport of L-arginine, NO synthase (NOS) activity and cGMP content in platelets were analyzed. Moreover, platelet function, plasma levels of L-arginine, metabolic and clinical markers were investigated in these patients and controls. RESULTS L-arginine transport (pmol/10(9) cells/min) in platelets via system y(+)L was diminished in obese subjects (20.8±4.7, n=10) and MetS patients (18.4±3.8, n=10) compared to controls (52.3±14.8, n=10). The y(+)L transport system correlated negatively to insulin levels and Homeostasis Model Assessment of Insulin Resistance (HOMA IR) index. No differences in NOS activity and cGMP content were found among the groups. Moreover, plasma levels of L-arginine were not affected by obesity or MetS. DISCUSSION Our study provides the first evidence that obesity and MetS lead to a dysfunction of L-arginine influx, which negatively correlates to insulin resistance. These findings could be a premature marker of future cardiovascular complications during adulthood.
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Affiliation(s)
- Carmen R L Assumpção
- Departamento de Farmacologia e Psicobiologia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
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16
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Moss MB, Siqueira MA, Mann GE, Brunini TMC, Mendes-Ribeiro AC. Platelet aggregation in arterial hypertension: Is there a nitric oxide-urea connection? Clin Exp Pharmacol Physiol 2010; 37:167-72. [DOI: 10.1111/j.1440-1681.2009.05247.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Rodrigues Pereira N, Bandeira Moss M, Assumpção CR, Cardoso CB, Mann GE, Brunini TMC, Mendes-Ribeiro AC. Oxidative stress, l-arginine-nitric oxide and arginase pathways in platelets from adolescents with anorexia nervosa. Blood Cells Mol Dis 2010; 44:164-8. [PMID: 20071203 DOI: 10.1016/j.bcmd.2009.12.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2009] [Revised: 11/25/2009] [Accepted: 11/25/2009] [Indexed: 10/20/2022]
Abstract
Anorexia nervosa (AN) is associated with high cardiovascular mortality. Nitric oxide (NO) inhibits platelet function and regulates the cardiovascular homeostasis. The aim of this study was to investigate the l-arginine-NO-GMPc and arginase pathways and oxidative stress in platelets from patients with AN. Intraplatelet l-arginine transport, NOS expression and activity, cGMP levels, platelet aggregation, arginase expression and oxidative stress were measured in adolescent patients with AN (n=11) and healthy controls (n=12). Plasma l-arginine levels were significantly reduced in AN. l-arginine transport, NOS activity and cGMP basal levels were reduced in platelets associated with unchanged platelet aggregability. The expression of NOS isoforms was not affected. TBARS production was diminished, while the activity of superoxide dismutase was elevated in AN patients. There was an overexpression of arginase II in AN. Alterations of l-arginine-NO-GMPc and arginase pathways in platelets can be early predictors of the incidence of cardiovascular disease into adult life in AN.
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Lunkes DS, Lunkes GI, Ahmed M, Morsch AL, Zanin RF, Maldonado PA, Corrêa M, Schetinger MRC, Morsch VM. Effect of different vasodilators on NTPDase activity in healthy and hypertensive patients. Thromb Res 2009; 124:268-74. [DOI: 10.1016/j.thromres.2008.12.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2008] [Revised: 12/03/2008] [Accepted: 12/03/2008] [Indexed: 10/21/2022]
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19
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Li D, Peng J, Xin HY, Luo D, Zhang YS, Zhou Z, Jiang DJ, Deng HW, Li YJ. Calcitonin gene-related peptide-mediated antihypertensive and anti-platelet effects by rutaecarpine in spontaneously hypertensive rats. Peptides 2008; 29:1781-8. [PMID: 18625276 DOI: 10.1016/j.peptides.2008.06.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2008] [Revised: 06/13/2008] [Accepted: 06/16/2008] [Indexed: 10/21/2022]
Abstract
We have previously reported that Chinese traditional medicine rutaecarpine (Rut) produced a sustained hypotensive effect in phenol-induced and two-kidney, one-clip hypertensive rats. The aims of this study are to determine whether Rut could exert antihypertensive and anti-platelet effects in spontaneously hypertensive rats (SHR) and the underlying mechanisms. In vivo, SHR were given Rut and the blood pressure was monitored. Blood was collected for the measurements of calcitonin gene-related peptide (CGRP), tissue factor (TF) concentration and activity, and platelet aggregation, and the dorsal root ganglia were saved for examining CGRP expression. In vitro, the effects of Rut and CGRP on platelet aggregation were measured, and the effect of CGRP on platelet-derived TF release was also determined. Rut exerted a sustained hypotensive effect in SHR concomitantly with the increased synthesis and release of CGRP. The treatment of Rut also showed an inhibitory effect on platelet aggregation concomitantly with the decreased TF activity and TF antigen level in plasma. Study in vitro showed an inhibitory effect of Rut on platelet aggregation in the presence of thoracic aorta, which was abolished by capsazepine or CGRP(8-37), an antagonist of vanilloid receptor or CGRP receptor. Exogenous CGRP was able to inhibit both platelet aggregation and the release of platelet-derived TF, which were abolished by CGRP(8-37). The results suggest that Rut exerts both antihypertensive and anti-platelet effects through stimulating the synthesis and release of CGRP in SHR, and CGRP-mediated anti-platelet effect is related to inhibiting the release of platelet-derived TF.
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Affiliation(s)
- Dai Li
- Department of Pharmacology, School of Pharmaceutical Sciences, Central South University, Changsha 410078, China
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20
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Fürstenau CR, Trentin DDS, Gossenheimer AN, Ramos DB, Casali EA, Barreto-Chaves MLM, Sarkis JJF. Ectonucleotidase activities are altered in serum and platelets of L-NAME-treated rats. Blood Cells Mol Dis 2008; 41:223-9. [PMID: 18559295 DOI: 10.1016/j.bcmd.2008.04.009] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2007] [Revised: 02/15/2008] [Accepted: 04/30/2008] [Indexed: 12/31/2022]
Abstract
It is well known that hypertension is closely associated to the development of vascular diseases and that the inhibition of nitric oxide biosynthesis by administration of Nomega-Nitro-L-arginine methyl ester hydrochloride(L-NAME) leads to arterial hypertension. In the vascular system, extracellular purines mediate several effects;thus, ADP is the most important platelet agonist and recruiting ag ent, while adenosine, an end product of nucleotide metabolism, is a vasodilator and inhibitor of platelet activation and recruitment. Members of several families of enzymes, known as ectonucleotidases, including E-NTPDases (ecto-nucleoside triphosphate diphosphohydrolase), E-NPP (ecto-nucleotide pyrophosphatase/phosphodiesterase) and 5'-nucleotidase are able to hydrolyze extracellular nucleotides until their respective nucleosides. We investigated the ectonucleotidase activities of serum and platelets from rats made hypertensive by oral administration of L-NAME (30 mg/kg/day for 14 days or 30 mg/kg/day for 14 days plus 7 days of L-NAME washout, in the drinking water) in comparison to normotensive control rats. L-NAME promoted a significant rise in systolic blood pressure from 112 +/- 9.8 to 158 +/- 23 mmHg. The left ventricle weight index (LVWI) was increased in rats treated with L-NAME for 14 days when compared to control animals. In serum samples, ATP, ADP and AMP hydrolysis were reduced by about 27%, 36% and 27%, respectively. In platelets, the decrease in ATP, ADP and AMP hydrolysis was approximately 27%, 24% and 32%, respectively. All parameters recovered after 7 days of L-NAME washout. HPLC demonstrated a reduction in ADP, AMP and hypoxanthine levels by about 64%, 69% and 87%,respectively. In this study, we showed that ectonucleotidase activities are decreased in serum and platelets from L-NAME-treated rats, which should represent an additional risk for the development of hypertension. The modulation of ectonucleotidase activities may represent an approach to antihypertensive therapy via inhibition of spontaneous platelet activation and recruitment, as well as thrombus formation.
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Affiliation(s)
- Cristina Ribas Fürstenau
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
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