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Mota Alvidrez RI, Annarapu GK, Srinivasan AJ, Liu Z, Yazdani HO, Simmons RL, Shiva S, Neal MD, Nolfi-Donegan D. High Dose of Metformin Decreases Susceptibility to Occlusive Arterial Thrombosis in Diabetic Mice. RESEARCH SQUARE 2023:rs.3.rs-3143156. [PMID: 37503167 PMCID: PMC10371086 DOI: 10.21203/rs.3.rs-3143156/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Introduction Metformin is the most prescribed medication in Diabetes Mellitus(DM). Metformin has shown to decrease mean platelet volume, with promising antiplatelet effects. High doses of Metformin have also been associated with hypercoagulation. We hypothesize that Metformin will protect DM mice from occlusive arterial thrombus formation by altering platelet activation and mitochondrial bioenergetics. Methods DM was developed by low dose of Streptozotocin, healthy (non-DM) mice are controls. Either vehicle or Metformin was administered twice daily via oral gavage for 7-days. Ferric chloride (FeCl3) arterial thrombosis and tail bleeding time were performed. Whole blood aggregometry, platelet activation/adhesion and mitochondrial bioenergetics were evaluated. Results Metformin decreased susceptibility of DM mice to arterial thrombosis. Platelet bioenergetics show DM mice have increased platelet mitochondrial respiration, but no differences were observed with Metformin treatment. In healthy mice, Metformin modulated ADP-dependent increase in platelet adhesion. In healthy mice, Metformin shortens bleeding time with faster thrombotic occlusion. Metformin also increased platelet mitochondrial maximal respiration and spare respiratory capacity uniquely in healthy mice. Conclusion Metformin regulates platelet bioenergetics and ADP-mediated platelet function in DM mice which attenuates susceptibility to arterial thrombosis. Future studies will evaluate clinically relevant doses of Metformin that regulates thrombotic function in diabetic platelets.
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Affiliation(s)
| | | | | | - Zeyu Liu
- University of Pittsburgh Medical Center
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2
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Glycaemic Control in Patients Undergoing Percutaneous Coronary Intervention: What Is the Role for the Novel Antidiabetic Agents? A Comprehensive Review of Basic Science and Clinical Data. Int J Mol Sci 2022; 23:ijms23137261. [PMID: 35806265 PMCID: PMC9266811 DOI: 10.3390/ijms23137261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/24/2022] [Accepted: 06/27/2022] [Indexed: 11/17/2022] Open
Abstract
Coronary artery disease (CAD) remains one of the most important causes of morbidity and mortality worldwide, and revascularization through percutaneous coronary interventions (PCI) significantly improves survival. In this setting, poor glycaemic control, regardless of diabetes, has been associated with increased incidence of peri-procedural and long-term complications and worse prognosis. Novel antidiabetic agents have represented a paradigm shift in managing patients with diabetes and cardiovascular diseases. However, limited data are reported so far in patients undergoing coronary stenting. This review intends to provide an overview of the biological mechanisms underlying hyperglycaemia-induced vascular damage and the contrasting actions of new antidiabetic drugs. We summarize existing evidence on the effects of these drugs in the setting of PCI, addressing pre-clinical and clinical studies and drug-drug interactions with antiplatelet agents, thus highlighting new opportunities for optimal long-term management of these patients.
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3
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Johny E, Jala A, Nath B, Alam MJ, Kuladhipati I, Das R, Borkar RM, Adela R. Vitamin D Supplementation Modulates Platelet-Mediated Inflammation in Subjects With Type 2 Diabetes: A Randomized, Double-Blind, Placebo-Controlled Trial. Front Immunol 2022; 13:869591. [PMID: 35720377 PMCID: PMC9205628 DOI: 10.3389/fimmu.2022.869591] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 04/27/2022] [Indexed: 11/13/2022] Open
Abstract
Background Recently, our group identified increased platelet-mediated inflammation in type 2 diabetes (T2DM) patients, and it is a well-established risk factor for diabetes complications, particularly for the development of cardiovascular diseases (CVD). Furthermore, vitamin D is reported to play an important role in the modulation of platelet hyperactivity and immune function, although the effect of vitamin D on platelet-mediated inflammation is not well studied. Hence, we aimed to investigate the effect of vitamin D supplementation on platelet-mediated inflammation in T2DM patients. Methods After screening a total of 201 subjects, our randomized, double-blind, placebo-controlled trial included 59 vitamin-D-deficient T2DM subjects, and the participants were randomly assigned to placebo (n = 29) or vitamin D3 (n = 30) for 6 months. Serum vitamin D metabolite levels, immunome profiling, platelet activation, and platelet-immune cell aggregate formation were measured at baseline and at the end of the study. Similarly, the serum levels of inflammatory cytokines/chemokines were assessed by a multiplex assay. Results Six months of vitamin D supplementation increases the serum vitamin D3 and total 25(OH)D levels from the baseline (p < 0.05). Vitamin D supplementation does not improve glycemic control, and no significant difference was observed in immune cells. However, platelet activation and platelet immune cell aggregates were altered after the vitamin D intervention (p < 0.05). Moreover, vitamin D reduces the serum levels of IL-18, TNF-α, IFN-γ, CXCL-10, CXCL-12, CCL-2, CCL-5, CCL-11, and PF-4 levels compared to the baseline levels (p < 0.05). Our ex vivo experiment confirms that a sufficient circulating level of vitamin D reduces platelet activation and platelet intracellular reactive oxygen species. Conclusion Our study results provide evidence that vitamin D supportive therapy may help to reduce or prevent the disease progression and cardiovascular risk in T2DM patients by suppressing oxidative stress and platelet-mediated inflammation. Clinical Trial Registration Clinical Trial Registry of India: CTRI/2019/01/016921.
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Affiliation(s)
- Ebin Johny
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research, Guwahati, India
| | - Aishwarya Jala
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research, Guwahati, India
| | - Bishamber Nath
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research, Guwahati, India
| | - Md Jahangir Alam
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research, Guwahati, India
| | | | | | - Roshan M Borkar
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research, Guwahati, India
| | - Ramu Adela
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research, Guwahati, India
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4
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Nusca A, Tuccinardi D, Pieralice S, Giannone S, Carpenito M, Monte L, Watanabe M, Cavallari I, Maddaloni E, Ussia GP, Manfrini S, Grigioni F. Platelet Effects of Anti-diabetic Therapies: New Perspectives in the Management of Patients with Diabetes and Cardiovascular Disease. Front Pharmacol 2021; 12:670155. [PMID: 34054542 PMCID: PMC8149960 DOI: 10.3389/fphar.2021.670155] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 04/16/2021] [Indexed: 12/14/2022] Open
Abstract
In type 2 diabetes, anti-thrombotic management is challenging, and current anti-platelet agents have demonstrated reduced efficacy. Old and new anti-diabetic drugs exhibited—besides lowering blood glucose levels—direct and indirect effects on platelet function and on thrombotic milieu, eventually conditioning cardiovascular outcomes. The present review summarizes existing evidence on the effects of glucose-lowering agents on platelet properties, addressing pre-clinical and clinical research, as well as drug–drug interactions with anti-platelet agents. We aimed at expanding clinicians’ understanding by highlighting new opportunities for an optimal management of patients with diabetes and cardiovascular disease. We suggest how an improvement of the thrombotic risk in this large population of patients may be achieved by a careful and tailored combination of anti-diabetic and anti-platelet therapies.
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Affiliation(s)
- Annunziata Nusca
- Unit of Cardiac Sciences, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Dario Tuccinardi
- Unit of Endocrinology and Diabetes, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Silvia Pieralice
- Unit of Endocrinology and Diabetes, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Sara Giannone
- Unit of Cardiac Sciences, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Myriam Carpenito
- Unit of Cardiac Sciences, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Lavinia Monte
- Unit of Endocrinology and Diabetes, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Mikiko Watanabe
- Department of Experimental Medicine, Section of Medical Pathophysiology, Food Science and Endocrinology, Sapienza University of Rome, Rome, Italy
| | - Ilaria Cavallari
- Unit of Cardiac Sciences, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Ernesto Maddaloni
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Gian Paolo Ussia
- Unit of Cardiac Sciences, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Silvia Manfrini
- Unit of Endocrinology and Diabetes, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Francesco Grigioni
- Unit of Cardiac Sciences, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
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Markowicz-Piasecka M, Sadkowska A, Huttunen KM, Podsiedlik M, Mikiciuk-Olasik E, Sikora J. An investigation into the pleiotropic activity of metformin. A glimpse of haemostasis. Eur J Pharmacol 2020; 872:172984. [PMID: 32017937 DOI: 10.1016/j.ejphar.2020.172984] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 01/08/2020] [Accepted: 01/31/2020] [Indexed: 02/07/2023]
Abstract
The most characteristic features of type 2 diabetes mellitus (T2DM) are hyperglycaemia and insulin resistance, however, patients with T2DM are at higher risk of cardiovascular disease (CVD) and atherosclerosis. Diabetes, frequently related to metabolic and vascular impairments, is also associated with thrombosis, increased blood coagulation and an imbalance between coagulation and fibrinolysis. Metformin is the most often used oral glucose-lowering agent; its beneficial properties include lowering insulin resistance, weight reduction and cardioprotection. Available data suggest that the advantageous properties of metformin stem from its favourable effects on endothelium, and anti-oxidative and anti-inflammatory properties. This paper reviews the favourable impact of metformin on endothelial function, with particular emphasis on the release of endogenous molecules modulating the state of the vascular endothelium and coagulation. It also summarizes the present knowledge on the influence of metformin on platelet activity and plasma haemostasis, including clot formation, stabilization and fibrinolysis. Its findings confirm that metformin should constitute first line therapy of T2DM subjects; however, more comprehensive methodical studies are required to discover the full potential of this drug.
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Affiliation(s)
- Magdalena Markowicz-Piasecka
- Laboratory of Bioanalysis, Department of Pharmaceutical Chemistry, Drug Analysis and Radiopharmacy, Medical University of Lodz, ul. Muszyńskiego 1, 90-151, Lodz, Poland.
| | - Adrianna Sadkowska
- Students Research Group, Laboratory of Bioanalysis, Department of Pharmaceutical Chemistry, Drug Analysis and Radiopharmacy, Medical University of Lodz, ul. Muszyńskiego 1, 90-151, Lodz, Poland.
| | - Kristiina M Huttunen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Yliopistonranta 1C, POB 1627, 70211, Kuopio, Finland.
| | - Maria Podsiedlik
- Department of Pharmaceutical Chemistry, Drug Analysis and Radiopharmacy, Medical University of Lodz, ul. Muszyńskiego 1, 90-151, Lodz, Poland.
| | - Elżbieta Mikiciuk-Olasik
- Department of Pharmaceutical Chemistry, Drug Analysis and Radiopharmacy, Medical University of Lodz, ul. Muszyńskiego 1, 90-151, Lodz, Poland.
| | - Joanna Sikora
- Laboratory of Bioanalysis, Department of Pharmaceutical Chemistry, Drug Analysis and Radiopharmacy, Medical University of Lodz, ul. Muszyńskiego 1, 90-151, Lodz, Poland.
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6
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Zhou WX, Zhao HW, Chen HH, Zhang ZY, Chen DY. Characterization of drug–drug salt forms of metformin and aspirin with improved physicochemical properties. CrystEngComm 2019. [DOI: 10.1039/c9ce00377k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A salt between two old drugs was synthesized and two phases were discovered with improved physicochemical properties.
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Affiliation(s)
- Wen-Xiu Zhou
- Research Center for Pharmaceutical Quality Control and Solid-State Chemistry
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai
- China
| | - Hong-Wei Zhao
- Research Center for Pharmaceutical Quality Control and Solid-State Chemistry
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai
- China
| | - Huan-Huan Chen
- Research Center for Pharmaceutical Quality Control and Solid-State Chemistry
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai
- China
| | - Zai-Yong Zhang
- Research Center for Pharmaceutical Quality Control and Solid-State Chemistry
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai
- China
| | - Dong-Ying Chen
- Research Center for Pharmaceutical Quality Control and Solid-State Chemistry
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai
- China
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Verdoia M, Pergolini P, Rolla R, Ceccon C, Caputo M, Aimaretti G, Suryapranata H, De Luca G. Use of Metformin and Platelet Reactivity in Diabetic Patients Treated with Dual Antiplatelet Therapy. Exp Clin Endocrinol Diabetes 2018; 129:43-49. [PMID: 30497083 DOI: 10.1055/a-0787-1382] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND Enhanced platelet reactivity represents one of the major determinants of cardiovascular risk among diabetic patients. The aim of the present study was to evaluate the impact of metformin use on platelet reactivity in diabetic patients receiving dual antiplatelet therapy (DAPT). METHODS We included diabetic patients treated with DAPT after an acute coronary syndrome or percutaneous coronary intervention. Platelet reactivity was assessed at 30-90 days by Multiple-electrode aggregometry. In an additional cohort of diabetic patients naïve to antiplatelet therapy, we assessed platelet reactivity by light transmission aggregometry, surface expression of P-selectin and plasma concentration of Thromboxane B2 (TxB2). RESULTS We included 219 diabetic patients, 117 (53.4%) treated with metformin. Metformin was associated with younger age (p=0.03), male gender (p=0.02), lower rate of hypertension (p=0.04), active smoker (p=0.002), previous MI (p<0.001) renal failure (p<0.001), fibrinogen (p<0.001) and C-reactive protein (p=0.04), larger use of diuretics (p=0.04) calcium antagonists (p=0.05), better glycemic control (p<0.001) and higher haemoglobin (p=0.003). The prevalence of HAPR did not significantly differ according to hypoglycemic treatment (p=0.73; adjusted OR[95%CI]=5.63[0.42-76], p=0.19). Moreover, no impact of metformin was observed for HRPR (p=0.77; adjusted OR[95%CI]=1.15[0.55-2.4], p=0.71). Among an additional cohort of 42 diabetic patients naïve to antiplatelet therapy, we confirmed no impact of metformin or insulin on aggregation. CONCLUSIONS Our study found no apparent association in diabetic patients treated with DAPT, between the use of metformin and platelet reactivity or the rate of HPR.
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Affiliation(s)
- Monica Verdoia
- Division of Cardiology, Azienda Ospedaliera-Universitaria "Maggiore della Carità", Eastern Piedmont University, Novara, Italy
| | - Patrizia Pergolini
- Clinical Chemistry, Azienda Ospedaliera-Universitaria "Maggiore della Carità", Eastern Piedmont University, Novara, Italy
| | - Roberta Rolla
- Clinical Chemistry, Azienda Ospedaliera-Universitaria "Maggiore della Carità", Eastern Piedmont University, Novara, Italy
| | - Claudia Ceccon
- Division of Cardiology, Azienda Ospedaliera-Universitaria "Maggiore della Carità", Eastern Piedmont University, Novara, Italy
| | - Marina Caputo
- Department of Diabetology, Eastern Piedmont University, Novara, Italy
| | | | | | - Giuseppe De Luca
- Division of Cardiology, Azienda Ospedaliera-Universitaria "Maggiore della Carità", Eastern Piedmont University, Novara, Italy
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8
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Chen HY, Chou P. Associations Between PFA-Measured Aspirin Resistance, Platelet Count, Renal Function, and Angiotensin Receptor Blockers. Clin Appl Thromb Hemost 2018; 24:63S-68S. [PMID: 29996660 PMCID: PMC6714849 DOI: 10.1177/1076029618786588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Aspirin resistance is used to describe patients who are undergoing aspirin therapy but fail for the inhibition of thromboxane biosynthesis in platelets. Although the true mechanism is unclear, drug–drug interaction remains a possible factor. The study aimed to determine whether there was association between aspirin resistance and the concomitant cardiovascular medication. Using the Platelet Function Analyzer-100 system, aspirin resistance was evaluated in aspirin-treated patients from the outpatient department. The associations between aspirin resistance and their concomitant common cardiovascular medication were analyzed. Aspirin resistance was prevalent in 147 (17.7%) of 831 patients. Concomitant angiotensin receptor blocker (ARB) treatment and low platelet count were associated with aspirin response (P = .04, .02, respectively). Multivariate logistic regression analysis results showed an association between aspirin response and ARB therapy (adjusted odds ratio [OR] 1.48; 95% confidence interval, CI: 1.08-2.18). And the association was blunted when platelet count was considered (adjusted OR 1.43, 95% CI: 0.92-2.23). In ARB-treated patients, increased creatinine and decreased hematocrit laboratory data increased the risk of aspirin resistance (P = .02, .04, respectively), and the effect of platelet count on aspirin resistance was diminished by ARB therapy. Concomitant ARB treatment in aspirin-treated patients decreased the risk of aspirin resistance, and the effect was dependent on low platelet count. In ARB-treated patients, increased creatinine and decreased hematocrit data increased the risk of aspirin resistance. In addition, the effect of platelet count on aspirin resistance was diminished by ARB treatment.
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Affiliation(s)
- Hung Yi Chen
- Division of Cardiology, Department of Medicine, Taipei City Hospital, Heping Fuyou Branch, Taipei, Taiwan.,Institute of Public Health and Community Medicine Research Center, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Pesus Chou
- Institute of Public Health and Community Medicine Research Center, National Yang-Ming University School of Medicine, Taipei, Taiwan
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Effects of single and combined metformin and L-citrulline supplementation on L-arginine-related pathways in Becker muscular dystrophy patients: possible biochemical and clinical implications. Amino Acids 2018; 50:1391-1406. [PMID: 30003335 DOI: 10.1007/s00726-018-2614-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 07/03/2018] [Indexed: 12/21/2022]
Abstract
The L-arginine/nitric oxide synthase (NOS) pathway is considered to be altered in muscular dystrophy such as Becker muscular dystrophy (BMD). We investigated two pharmacological options aimed to increase nitric oxide (NO) synthesis in 20 male BMD patients (age range 21-44 years): (1) supplementation with L-citrulline (3 × 5 g/d), the precursor of L-arginine which is the substrate of neuronal NO synthase (nNOS); and (2) treatment with the antidiabetic drug metformin (3 × 500 mg/d) which activates nNOS in human skeletal muscle. We also investigated the combined use of L-citrulline (3 × 5 g/d) and metformin (3 × 500 mg/d). Before and after treatment, we measured in serum and urine samples the concentration of amino acids and metabolites of L-arginine-related pathways and the oxidative stress biomarker malondialdehyde (MDA). Compared to healthy subjects, BMD patients have altered NOS, arginine:glycine amidinotransferase (AGAT) and guanidinoacetate methyltransferase (GAMT) pathways. Metformin treatment resulted in concentration decrease of arginine and MDA in serum, and of homoarginine (hArg) and guanidinoacetate (GAA) in serum and urine. L-Citrulline supplementation resulted in considerable increase of the concentrations of amino acids and creatinine in the serum, and in their urinary excretion rates. Combined use of metformin and L-citrulline attenuated the effects obtained from their single administrations. Metformin, L-citrulline or their combination did not alter serum nitrite and nitrate concentrations and their urinary excretion rates. In conclusion, metformin or L-citrulline supplementation to BMD patients results in remarkable antidromic changes of the AGAT and GAMT pathways. In combination, metformin and L-citrulline at the doses used in the present study seem to abolish the biochemical effects of the single drugs in slight favor of L-citrulline.
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10
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van der Plas A, Pouly S, de La Bourdonnaye G, Ng WT, Baker G, Lüdicke F. Influence of smoking and smoking cessation on levels of urinary 11-dehydro thromboxane B 2. Toxicol Rep 2018; 5:561-567. [PMID: 29854626 PMCID: PMC5977536 DOI: 10.1016/j.toxrep.2018.04.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 03/27/2018] [Accepted: 04/13/2018] [Indexed: 01/06/2023] Open
Abstract
Background Thromboxane is a key clinical risk endpoint of smoking-induced inflammation which has been associated in the pathogenesis of cardiovascular disease. The goal of this review is to quantify the effect of smoking and smoking cessation on one of its urinary metabolites, 11-dehydrothromboxaneB2. Methods PubMed and SCOPUS were searched to identify publications which report urinary 11-dehydrothromboxaneB2 levels in smokers and non-smokers, as well as articles reporting the effect of smoking cessation on urinary 11-dehydrothromboxaneB2 excretion. Results We found ten studies assessing urinary 11-dehydrothroboxaneB2 levels in smokers and non-smokers. Four papers reported the amount of urinary 11-dehydrothromboxaneB2 excreted in 24 h while six reported the amount excreted adjusted for creatinine. The meta-analyses comparing the excretion of urinary 11-dehydrothromboxane in current smokers to non-smokers report increased levels in current smokers (mean difference = 0.31 μg/24-h [95%CI: 0.27-0.34] and 166.45 pg/mg creatinine [95%CI: 120.51-212.40]). There were not enough publications to perform meta-analyses on the effects of smoking cessation on urinary 11-dehydrothromboxaneB2 excretion. Conclusions Urinary 11-dehydrothromboxaneB2 levels are increased in cigarette smokers, however, more data are needed to elucidate the effects of smoking cessation on urinary 11-dehydrothromboxaneB2 excretion.
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Affiliation(s)
- Angela van der Plas
- Product Assessment and Scientific Substantiation, Philip Morris International Research & Development, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchatel, Switzerland
| | - Sandrine Pouly
- Product Assessment and Scientific Substantiation, Philip Morris International Research & Development, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchatel, Switzerland
| | - Guillaume de La Bourdonnaye
- Product Assessment and Scientific Substantiation, Philip Morris International Research & Development, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchatel, Switzerland
| | - Wee Teck Ng
- Product Assessment and Scientific Substantiation, Philip Morris International Research & Development, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchatel, Switzerland
| | - Gizelle Baker
- Product Assessment and Scientific Substantiation, Philip Morris International Research & Development, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchatel, Switzerland
| | - Frank Lüdicke
- Product Assessment and Scientific Substantiation, Philip Morris International Research & Development, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchatel, Switzerland
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11
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Siewiera K, Kassassir H, Talar M, Wieteska L, Watala C. Higher mitochondrial potential and elevated mitochondrial respiration are associated with excessive activation of blood platelets in diabetic rats. Life Sci 2016; 148:293-304. [PMID: 26872978 DOI: 10.1016/j.lfs.2016.02.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 01/23/2016] [Accepted: 02/08/2016] [Indexed: 10/22/2022]
Abstract
AIMS The high glucose concentration observed in diabetic patients is a recognized factor of mitochondrial damage in various cell types. Its impact on mitochondrial bioenergetics in blood platelets remains largely vague. The aim of the study was to determine how the metabolism of carbohydrates, which has been impaired by streptozotocin-induced diabetes may affect the functioning of platelet mitochondria. MATERIALS AND METHODS Diabetes was induced in Sprague Dawley rats by intraperitoneal injection of streptozotocin. Platelet mitochondrial respiratory capacity was monitored as oxygen consumption (high-resolution respirometry). Mitochondrial membrane potential was assessed using a fluorescent probe, JC-1. Activation of circulating platelets was monitored by flow cytometry measuring of the expressions of CD61 and CD62P on a blood platelet surface. To determine mitochondrial protein density in platelets, Western Blot technique was used. KEY FINDINGS The results indicate significantly elevated mitochondria mass, increased mitochondrial membrane potential (ΔΨm) and enhanced respiration in STZ-diabetic animals, although the respiration control ratios appear to remain unchanged. Higher ΔΨm and elevated mitochondrial respiration were closely related to the excessive activation of circulating platelets in diabetic animals. SIGNIFICANCE Long-term diabetes can result in increased mitochondrial mass and may lead to hyperpolarization of blood platelet mitochondrial membrane. These alterations may be a potential underlying cause of abnormal platelet functioning in diabetes mellitus and hence, a potential target for antiplatelet therapies in diabetes.
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Affiliation(s)
- Karolina Siewiera
- Department of Haemostasis and Haemostatic Disorders, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland.
| | - Hassan Kassassir
- Department of Haemostasis and Haemostatic Disorders, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland
| | - Marcin Talar
- Department of Haemostasis and Haemostatic Disorders, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland
| | - Lukasz Wieteska
- Department of Medical Biochemistry, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland
| | - Cezary Watala
- Department of Haemostasis and Haemostatic Disorders, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland
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12
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Papazafiropoulou A, Papanas N, Pappas S, Maltezos E, Mikhailidis DP. Effects of oral hypoglycemic agents on platelet function. J Diabetes Complications 2015; 29:846-51. [PMID: 26026848 DOI: 10.1016/j.jdiacomp.2015.04.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Revised: 04/09/2015] [Accepted: 04/10/2015] [Indexed: 12/15/2022]
Abstract
Platelet dysfunction plays a role in diabetic macrovascular complications. Several studies have assessed the effect of oral hypoglycemic agents (OHAs) on platelet function. Data from both in vivo and in vitro studies show a favorable effect for most of the traditional glucose-lowering therapies, while evidence is limited for the newer ones. Metformin, sulfonylureas, glitazones and acarbose exert a favorable effect on platelet function. Among incretin therapies, only sitagliptin has so far been demonstrated to have a beneficial effect on platelet aggregation. More in vivo and in vitro evidence is required to increase our knowledge on any potential beneficial effects of OHAs on platelet function. Any such effect may have implications for the reduction of cardiovascular risk in type 2 diabetes mellitus.
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Affiliation(s)
- Athanasia Papazafiropoulou
- Diabetes Centre, Third Department of Internal Medicine, General Hospital of Nikaia, Piraeus, Greece; Diabetes Centre, First Department of Internal Medicine, Tzaneio General Hospital of Piraeus, Piraeus, Greece.
| | - Nikolaos Papanas
- Outpatient Clinic of Obesity, Diabetes and Metabolism, Second Department of Internal Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Stavros Pappas
- Diabetes Centre, Third Department of Internal Medicine, General Hospital of Nikaia, Piraeus, Greece
| | - Efstratios Maltezos
- Outpatient Clinic of Obesity, Diabetes and Metabolism, Second Department of Internal Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Dimitri P Mikhailidis
- Department of Clinical Biochemistry (Vascular Disease Prevention Clinics), Royal Free Hospital campus, University College London Medical School, London, UK
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Tassone EJ, Perticone M, Sciacqua A, Mafrici SF, Settino C, Malara N, Mollace V, Sesti G, Perticone F. Low dose of acetylsalicylic acid and oxidative stress-mediated endothelial dysfunction in diabetes: a short-term evaluation. Acta Diabetol 2015; 52:249-56. [PMID: 25091345 PMCID: PMC4374120 DOI: 10.1007/s00592-014-0629-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 07/02/2014] [Indexed: 01/03/2023]
Abstract
Current guidelines suggest the use of low doses of acetylsalicylic acid (ASA) for patients with diabetes mellitus (DM) in primary prevention. However, the evidences demonstrating the beneficial effect of ASA in primary prevention are conflicting. In this pilot study, we evaluated in a group of diabetic patients, in primary prevention, the impact of ASA treatment on oxidative stress and vascular function. We enrolled 22 newly diagnosed diabetic patients, without any previous clinical evidence of cardiovascular disease, to receive, in primary prevention, ASA (100 mg/daily). We tested, in basal condition, after 4 weeks of ASA administration and after 4 weeks of pharmacological washout, the impact of ASA treatment on endothelial function, assessed by a semipletysmographic method, measuring the main oxidative stress parameters related to it. As expected, after 4 weeks of treatment, ASA induced a significant reduction of plasma thromboxane-A2, as a consequence of cyclooxygenase-1 inhibition. By contrast, ASA significantly increased the plasma and urine 8-iso-PGF2α, a well-known prothrombotic molecule, parallel to an increase of plasma NOX2 levels. The enhancement of this oxidative pathway is associated with a significant impairment of endothelial vasodilation, assessed by reactive hyperemia index (RHI). The pharmacological washout reverted all parameters to basal condition. Our findings suggest that ASA utilization for primary prevention in diabetic patients causes a significant increase of oxidative stress burden impairing the vascular function. Present data, if confirmed on a larger population, could permanently discourage the use of the ASA for the primary prevention in patients with DM.
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Affiliation(s)
- Eliezer Joseph Tassone
- Department of Medical and Surgical Sciences, University Magna Græcia of Catanzaro, Campus Universitario di Germaneto, V.le Europa, 88100 Catanzaro, Italy
| | - Maria Perticone
- Department of Clinical and Experimental Medicine, University Magna Græcia of Catanzaro, Campus Universitario di Germaneto, V.le Europa, 88100 Catanzaro, Italy
| | - Angela Sciacqua
- Department of Medical and Surgical Sciences, University Magna Græcia of Catanzaro, Campus Universitario di Germaneto, V.le Europa, 88100 Catanzaro, Italy
| | - Simona Fortunata Mafrici
- Department of Medical and Surgical Sciences, University Magna Græcia of Catanzaro, Campus Universitario di Germaneto, V.le Europa, 88100 Catanzaro, Italy
| | - Chiara Settino
- Department of Medical and Surgical Sciences, University Magna Græcia of Catanzaro, Campus Universitario di Germaneto, V.le Europa, 88100 Catanzaro, Italy
| | - Natalia Malara
- Department of Medical and Surgical Sciences, University Magna Græcia of Catanzaro, Campus Universitario di Germaneto, V.le Europa, 88100 Catanzaro, Italy
- Interregional Research Center for Food Safety and Health (IRC-FSH), Catanzaro, Italy
| | - Vincenzo Mollace
- IRCCS San Raffaele, Rome, Italy
- Department of Health Science, University Magna Græcia of Catanzaro, Campus Universitario di Germaneto, V.le Europa, 88100 Catanzaro, Italy
| | - Giorgio Sesti
- Department of Medical and Surgical Sciences, University Magna Græcia of Catanzaro, Campus Universitario di Germaneto, V.le Europa, 88100 Catanzaro, Italy
| | - Francesco Perticone
- Department of Medical and Surgical Sciences, University Magna Græcia of Catanzaro, Campus Universitario di Germaneto, V.le Europa, 88100 Catanzaro, Italy
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