1
|
Dikalova A, Ao M, Tkachuk L, Dikalov S. Deacetylation mimetic mutation of mitochondrial SOD2 attenuates ANG II-induced hypertension by protecting against oxidative stress and inflammation. Am J Physiol Heart Circ Physiol 2024; 327:H433-H443. [PMID: 38904850 PMCID: PMC11442025 DOI: 10.1152/ajpheart.00162.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 06/11/2024] [Accepted: 06/11/2024] [Indexed: 06/22/2024]
Abstract
Almost one-half of adults have hypertension, and blood pressure is poorly controlled in a third of patients despite the use of multiple drugs, likely because of mechanisms that are not affected by current treatments. Hypertension is linked to oxidative stress; however, common antioxidants are ineffective. Hypertension is associated with inactivation of key intrinsic mitochondrial antioxidant, superoxide dismutase 2 (SOD2), due to hyperacetylation, but the role of specific SOD2 lysine residues has not been defined. Hypertension is associated with SOD2 acetylation at lysine 68, and we suggested that deacetylation mimetic mutation of K68 to arginine in SOD2 inhibits vascular oxidative stress and attenuates hypertension. To test this hypothesis, we have developed a new deacetylation mimetic SOD2-K68R mice. We performed in vivo studies in SOD2-K68R mice using angiotensin II (ANG II) model of vascular dysfunction and hypertension. ANG II infusion in wild-type mice induced vascular inflammation and oxidative stress and increased blood pressure to 160 mmHg. SOD2-K68R mutation completely prevented increase in mitochondrial superoxide, abrogated vascular oxidative stress, preserved endothelial nitric oxide production, protected vasorelaxation, and attenuated ANG II-induced hypertension. ANG II and cytokines contribute to vascular oxidative stress and hypertension. Treatment of wild-type aortas with ANG II and cytokines in organoid culture increased mitochondrial superoxide twofold, which was completely prevented in aortas isolated from SOD2-K68R mice. These data support the important role of SOD2-K68 acetylation in vascular oxidative stress and pathogenesis of hypertension. We conclude that strategies to reduce SOD2 acetylation may have therapeutic potential in the treatment of vascular dysfunction and hypertension.NEW & NOTEWORTHY Essential hypertension is associated with hyperacetylation of key mitochondrial antioxidant SOD2; however, the pathophysiological role of SOD2 acetylation has not been defined. Our animal study of angiotensin II hypertension model shows that deacetylation mimetic SOD2-K68R mutation prevents pathogenic increase in vascular mitochondrial superoxide, abrogates vascular oxidative stress, preserves endothelial nitric oxide, protects endothelial-dependent vasorelaxation, and attenuates hypertension. These data support the important role of SOD2-K68 acetylation in vascular oxidative stress and the pathogenesis of hypertension.
Collapse
Affiliation(s)
- Anna Dikalova
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, United States
| | - Mingfang Ao
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, United States
| | - Liliya Tkachuk
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, United States
| | - Sergey Dikalov
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, United States
| |
Collapse
|
2
|
Central systolic blood pressure relates inversely to nitric oxide synthesis in young black adults: the African-PREDICT study. J Hum Hypertens 2021; 35:985-993. [PMID: 33273698 DOI: 10.1038/s41371-020-00453-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 10/27/2020] [Accepted: 11/16/2020] [Indexed: 02/03/2023]
Abstract
Lower nitric oxide (NO) bioavailabilty associates with hypertension in patients and elderly populations. With hypertension known to develop earlier in black populations, we compared both plasma and urinary NO-related markers and their associations with central systolic blood pressure (cSBP) and arterial stiffness in healthy young black and white adults. We included healthy black and white men and women (n = 1110; 20-30 years) and measured cSBP and pulse wave velocity (PWV), along with both plasma and urinary arginine, homoarginine, asymmetric dimethylarginine (ADMA), symmetric dimethylarginine (SDMA), as well as urinary ornithine/citrulline, nitrite and nitrate. In addition, the urinary nitrate-to-nitrite ratio (UNOxR) was calculated. The black men and women had higher cSBP and higher plasma arginine and ADMA, but lower urinary nitrate and UNOxR (all p ≤ 0.003) than their white counterparts. In single and forward stepwise multiple regression analyses, we found an inverse association of cSBP (adj. R2 = 0.124; β = -0.134; p = 0.006) and plasma homoarginine in black men. Central SBP associated inversely with UNOxR in black women only (adj. R2 = 0.171; β = -0.130; p = 0.029). In the white women, cSBP associated positively with urinary ADMA (adj. R2 = 0.372; β = 0.162; p = 0.015). PWV associated inversely with plasma ADMA (adj. R2 = 0.253; β = -0.163; p = 0.024) in the white women only. The lower NO synthesis and the higher cSBP in our black cohort support the notion of a potential increased risk for future large artery stiffness and hypertension development in later life.
Collapse
|
3
|
Jichitu A, Bungau S, Stanescu AMA, Vesa CM, Toma MM, Bustea C, Iurciuc S, Rus M, Bacalbasa N, Diaconu CC. Non-Alcoholic Fatty Liver Disease and Cardiovascular Comorbidities: Pathophysiological Links, Diagnosis, and Therapeutic Management. Diagnostics (Basel) 2021; 11:689. [PMID: 33921359 PMCID: PMC8069361 DOI: 10.3390/diagnostics11040689] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/09/2021] [Accepted: 04/11/2021] [Indexed: 02/06/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) has a growing prevalence in recent years. Its association with cardiovascular disease has been intensively studied, and certain correlations have been identified. The connection between these two entities has lately aroused interest regarding therapeutic management. In order to find the best therapeutic options, a detailed understanding of the pathophysiology that links (NAFLD) to cardiovascular comorbidities is needed. This review focuses on the pathogenic mechanisms that are behind these two diseases and on the therapeutic management available at this time.
Collapse
Affiliation(s)
- Alexandra Jichitu
- Clinical Emergency Hospital of Bucharest, 105402 Bucharest, Romania; (A.J.); (C.C.D.)
| | - Simona Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, 410028 Oradea, Romania;
| | - Ana Maria Alexandra Stanescu
- Department 5, Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania;
| | - Cosmin Mihai Vesa
- Department of Preclinical Disciplines, Faculty of Medicine and Pharmacy, University of Oradea, 410073 Oradea, Romania; (C.M.V.); (C.B.)
| | - Mirela Marioara Toma
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, 410028 Oradea, Romania;
| | - Cristiana Bustea
- Department of Preclinical Disciplines, Faculty of Medicine and Pharmacy, University of Oradea, 410073 Oradea, Romania; (C.M.V.); (C.B.)
| | - Stela Iurciuc
- Department of Cardiology, Faculty of Medicine, “Victor Babeş” University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Marius Rus
- Department of Medical Disciplines, Faculty of Medicine and Pharmacy, University of Oradea, 410073 Oradea, Romania;
| | - Nicolae Bacalbasa
- Department 13, Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania;
- Department of Surgery, “Ion Cantacuzino” Clinical Hospital, 030167 Bucharest, Romania
| | - Camelia Cristina Diaconu
- Clinical Emergency Hospital of Bucharest, 105402 Bucharest, Romania; (A.J.); (C.C.D.)
- Department 5, Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania;
| |
Collapse
|
4
|
Abstract
Hypertension, a multifactorial disorder resulting from the interplay between genetic predisposition and environmental risk factors, affects ≈30% of adults. Emerging evidence has shown that nonalcoholic fatty liver disease (NAFLD), as an underestimated metabolic abnormality, is strongly associated with an increased risk of incident prehypertension and hypertension. However, the role of NAFLD in the development of hypertension is still obscure and is highly overlooked by the general public. Herein, we highlight the epidemiological evidence and putative mechanisms focusing on the emerging roles of NAFLD in hypertension, with the purpose of reinforcing the notion that NAFLD may serve as an independent risk factor and an important driving force in the development and progression of hypertension. Finally, we also briefly summarize the current potential treatments for NAFLD that might also be beneficial approaches against hypertension.
Collapse
Affiliation(s)
- Yan-Ci Zhao
- From the Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China (Y.-C.Z., G.-J.Z., Z.C., Z.-G.S., J.C., H.L.)
- Institute of Model Animal of Wuhan University, P.R. China (Y.-C.Z.,G.-J.Z., Z.C., Z.-G.S., J.C., H.L.)
| | - Guo-Jun Zhao
- From the Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China (Y.-C.Z., G.-J.Z., Z.C., Z.-G.S., J.C., H.L.)
- Institute of Model Animal of Wuhan University, P.R. China (Y.-C.Z.,G.-J.Z., Z.C., Z.-G.S., J.C., H.L.)
| | - Ze Chen
- From the Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China (Y.-C.Z., G.-J.Z., Z.C., Z.-G.S., J.C., H.L.)
- Institute of Model Animal of Wuhan University, P.R. China (Y.-C.Z.,G.-J.Z., Z.C., Z.-G.S., J.C., H.L.)
| | - Zhi-Gang She
- From the Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China (Y.-C.Z., G.-J.Z., Z.C., Z.-G.S., J.C., H.L.)
- Institute of Model Animal of Wuhan University, P.R. China (Y.-C.Z.,G.-J.Z., Z.C., Z.-G.S., J.C., H.L.)
- Basic Medical School (Z.-G.S., H.L.), Wuhan University, P.R. China
- Medical Research Institute, School of Medicine (Z.-G.S.), Wuhan University, P.R. China
| | - Jingjing Cai
- From the Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China (Y.-C.Z., G.-J.Z., Z.C., Z.-G.S., J.C., H.L.)
- Department of Cardiology, The Third Xiangya Hospital, Central South University, Changsha, P.R. China (J.C.)
- Institute of Model Animal of Wuhan University, P.R. China (Y.-C.Z.,G.-J.Z., Z.C., Z.-G.S., J.C., H.L.)
| | - Hongliang Li
- From the Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, P.R. China (Y.-C.Z., G.-J.Z., Z.C., Z.-G.S., J.C., H.L.)
- Institute of Model Animal of Wuhan University, P.R. China (Y.-C.Z.,G.-J.Z., Z.C., Z.-G.S., J.C., H.L.)
- Basic Medical School (Z.-G.S., H.L.), Wuhan University, P.R. China
| |
Collapse
|
5
|
Jansen K, Hanusch B, Pross S, Hanff E, Drabert K, Bollenbach A, Dugave I, Carmann C, Siefen RG, Emons B, Juckel G, Legenbauer T, Tsikas D, Lücke T. Enhanced Nitric Oxide (NO) and Decreased ADMA Synthesis in Pediatric ADHD and Selective Potentiation of NO Synthesis by Methylphenidate. J Clin Med 2020; 9:jcm9010175. [PMID: 31936392 PMCID: PMC7019361 DOI: 10.3390/jcm9010175] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 12/27/2019] [Accepted: 01/04/2020] [Indexed: 12/12/2022] Open
Abstract
Attention deficit hyperactivity disorder (ADHD) is a common pediatric psychiatric disorder, frequently treated with methylphenidate (MPH). Recently, MPH’s cardiovascular safety has been questioned by observational studies describing an increased cardiovascular risk in adults and blood pressure alterations in children. We considered members of the L-arginine (Arg)/nitric oxide (NO) pathway as possible early cardiovascular risk factors in pediatric ADHD children. They include the NO metabolites, nitrite and nitrate, the NO precursor Arg, and asymmetric dimethylarginine (ADMA), an endogenous NO synthase (NOS) inhibitor and a cardiovascular risk factor in adults. We conducted a prospective clinical trial with 42 ADHD children (aged 6–16 years) with (n = 19) and without (n = 23) MPH treatment. Age-matched children without ADHD (n = 43) served as controls. All plasma and urine metabolites were determined by gas chromatography-mass spectrometry. We observed higher plasma nitrite and lower plasma ADMA concentrations in the ADHD children. MPH-treated ADHD children had higher plasma nitrite concentrations than MPH-untreated ADHD children. As NOS activity is basally inhibited by ADMA, MPH treatment seems to have decreased the inhibitory potency of ADMA. Percentiles of systolic blood pressure were higher in MPH-treated ADHD children. The underlying mechanisms and their implications in the MPH therapy of pediatric ADHD with MPH remain to be elucidated in larger cohorts.
Collapse
Affiliation(s)
- Kathrin Jansen
- University Children’s Hospital, Ruhr University Bochum, 44791 Bochum, Germany
- Correspondence: ; Tel.: +49-234-5092615
| | - Beatrice Hanusch
- University Children’s Hospital, Ruhr University Bochum, 44791 Bochum, Germany
| | - Saskia Pross
- University Children’s Hospital, Ruhr University Bochum, 44791 Bochum, Germany
- Children’s Hospital, St., Clemens-Hospital Geldern, 47608 Geldern, Germany
| | - Erik Hanff
- Institute of Toxicology, Core Unit Proteomics, Hannover Medical School, 30625 Hannover, Germany
| | - Kathrin Drabert
- Institute of Toxicology, Core Unit Proteomics, Hannover Medical School, 30625 Hannover, Germany
| | - Alexander Bollenbach
- Institute of Toxicology, Core Unit Proteomics, Hannover Medical School, 30625 Hannover, Germany
| | - Irina Dugave
- University Children’s Hospital, Ruhr University Bochum, 44791 Bochum, Germany
- Department of Psychiatry, Alexius/Josef Hospital, 41464 Neuss, Germany
| | - Christina Carmann
- University Children’s Hospital, Ruhr University Bochum, 44791 Bochum, Germany
| | - Rainer Georg Siefen
- University Children’s Hospital, Ruhr University Bochum, 44791 Bochum, Germany
| | - Barbara Emons
- Department of Psychiatry, LWL Institute of Mental Health, LWL University Hospital, Ruhr-University Bochum, 44791 Bochum, Germany
- Department of Psychiatry, LWL University Hospital, Ruhr-University Bochum, 44791 Bochum, Germany
| | - Georg Juckel
- Department of Psychiatry, LWL Institute of Mental Health, LWL University Hospital, Ruhr-University Bochum, 44791 Bochum, Germany
- Department of Psychiatry, LWL University Hospital, Ruhr-University Bochum, 44791 Bochum, Germany
| | - Tanja Legenbauer
- LWL University Hospital Hamm for Child and Adolescent Psychiatry, Psychotherapy and Psychosomatic, Ruhr University Bochum, 59071 Hamm, Germany
| | - Dimitrios Tsikas
- Institute of Toxicology, Core Unit Proteomics, Hannover Medical School, 30625 Hannover, Germany
| | - Thomas Lücke
- University Children’s Hospital, Ruhr University Bochum, 44791 Bochum, Germany
| |
Collapse
|
6
|
Leal J, Teixeira-Santos L, Pinho D, Afonso J, Carvalho J, de Lourdes Bastos M, Albino-Teixeira A, Fraga S, Sousa T. l-proline supplementation improves nitric oxide bioavailability and counteracts the blood pressure rise induced by angiotensin II in rats. Nitric Oxide 2018; 82:1-11. [PMID: 30423454 DOI: 10.1016/j.niox.2018.10.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 07/25/2018] [Accepted: 10/31/2018] [Indexed: 12/24/2022]
Abstract
We evaluated whether l-proline (Pro) supplementation improves redox status and nitric oxide (NO) bioavailability and prevents or delays angiotensin II (AngII)-induced hypertension. Male Sprague-Dawley rats were distributed to four experimental groups: Pro + AngII (Pro-Ang), Pro + Saline (Pro-Sal), Vehicle + AngII (Veh-Ang) and Veh + Saline (Veh-Sal). Pro solution (2 g.kg-1·day-1) or water (vehicle) were orally administered, from day 0 to day 21. AngII (200 ng.kg-1.min-1) or saline were infused (s.c.) from day 7 to day 21. Systolic blood pressure (SBP) was measured by the tail-cuff method. From day 20-21, animals were kept on metabolic cages for 24h-urine collection. On day 21, urine and blood were collected for further quantification of redox status biomarkers, NO-related markers (urinary nitrates and nitrites, U-NOx; plasma asymmetric dimethylarginine, P-ADMA), metabolic and renal parameters. Pro prevented the AngII-induced SBP rise [mean (95% CI), Day 19: Pro-AngII, 137 (131; 143) vs. Veh-AngII, 157 (151; 163) mm Hg, P < 0.001]. Pro-AngII rats also had increased values of U-NOx, systemic and urinary total antioxidant status (TAS), urinary H2O2 and plasma urea, as well as reduced P-ADMA and unaltered urinary isoprostanes. Plasma Pro was inversely correlated with P-ADMA (r = -0.52, p = 0.0009) and positively correlated with urinary TAS (r = 0.55, p = 0.0005) which, in turn, was inversely correlated with P-ADMA (r = -0.56, p = 0.0004). Furthermore, urinary H2O2 values decreased across P-ADMA tertiles (p for linear trend = 0.023). These results suggest that Pro reduces P-ADMA levels and improves redox status, thereby increasing NO bioavailability and counteracting the AngII-induced SBP rise. H2O2 and TAS modulation by Pro may contribute to the reduced P-ADMA concentration.
Collapse
Affiliation(s)
- Joana Leal
- Departamento de Biomedicina - Unidade de Farmacologia e Terapêutica, Faculdade de Medicina, Universidade do Porto, Rua Dr. Plácido da Costa, S/N, Piso 3, 4200-450, Porto, Portugal; REQUIMTE, Laboratório de Toxicologia, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira nº 228, 4050-313, Porto, Portugal
| | - Luísa Teixeira-Santos
- Departamento de Biomedicina - Unidade de Farmacologia e Terapêutica, Faculdade de Medicina, Universidade do Porto, Rua Dr. Plácido da Costa, S/N, Piso 3, 4200-450, Porto, Portugal; MedInUP - Centro de Investigação Farmacológica e de Inovação Medicamentosa, Universidade do Porto, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal
| | - Dora Pinho
- Departamento de Biomedicina - Unidade de Farmacologia e Terapêutica, Faculdade de Medicina, Universidade do Porto, Rua Dr. Plácido da Costa, S/N, Piso 3, 4200-450, Porto, Portugal; MedInUP - Centro de Investigação Farmacológica e de Inovação Medicamentosa, Universidade do Porto, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal
| | - Joana Afonso
- Departamento de Biomedicina - Unidade de Farmacologia e Terapêutica, Faculdade de Medicina, Universidade do Porto, Rua Dr. Plácido da Costa, S/N, Piso 3, 4200-450, Porto, Portugal; MedInUP - Centro de Investigação Farmacológica e de Inovação Medicamentosa, Universidade do Porto, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal
| | - Jorge Carvalho
- Departamento de Biomedicina - Unidade de Farmacologia e Terapêutica, Faculdade de Medicina, Universidade do Porto, Rua Dr. Plácido da Costa, S/N, Piso 3, 4200-450, Porto, Portugal
| | - Maria de Lourdes Bastos
- REQUIMTE, Laboratório de Toxicologia, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira nº 228, 4050-313, Porto, Portugal
| | - António Albino-Teixeira
- Departamento de Biomedicina - Unidade de Farmacologia e Terapêutica, Faculdade de Medicina, Universidade do Porto, Rua Dr. Plácido da Costa, S/N, Piso 3, 4200-450, Porto, Portugal; MedInUP - Centro de Investigação Farmacológica e de Inovação Medicamentosa, Universidade do Porto, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal
| | - Sónia Fraga
- Departamento de Biomedicina - Unidade de Farmacologia e Terapêutica, Faculdade de Medicina, Universidade do Porto, Rua Dr. Plácido da Costa, S/N, Piso 3, 4200-450, Porto, Portugal; REQUIMTE, Laboratório de Toxicologia, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira nº 228, 4050-313, Porto, Portugal; Departamento de Saúde Ambiental, Instituto Nacional de Saúde Dr. Ricardo Jorge, Rua Alexandre Herculano nº321, 4000-055, Porto, Portugal.
| | - Teresa Sousa
- Departamento de Biomedicina - Unidade de Farmacologia e Terapêutica, Faculdade de Medicina, Universidade do Porto, Rua Dr. Plácido da Costa, S/N, Piso 3, 4200-450, Porto, Portugal; MedInUP - Centro de Investigação Farmacológica e de Inovação Medicamentosa, Universidade do Porto, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal.
| |
Collapse
|
7
|
Gkaliagkousi E, Gavriilaki E, Triantafyllou A, Nikolaidou B, Anyfanti P, Koletsos N, Vamvakis A, Dipla K, Lazaridis A, Douma S. Asymmetric dimethylarginine levels are associated with augmentation index across naïve untreated patients with different hypertension phenotypes. J Clin Hypertens (Greenwich) 2018; 20:680-685. [DOI: 10.1111/jch.13237] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 01/08/2018] [Accepted: 01/12/2018] [Indexed: 01/11/2023]
Affiliation(s)
- Eugenia Gkaliagkousi
- 3rd Department of Internal Medicine; Papageorgiou Hospital; Aristotle University of Thessaloniki; Thessaloniki Greece
| | - Eleni Gavriilaki
- 3rd Department of Internal Medicine; Papageorgiou Hospital; Aristotle University of Thessaloniki; Thessaloniki Greece
| | - Areti Triantafyllou
- 3rd Department of Internal Medicine; Papageorgiou Hospital; Aristotle University of Thessaloniki; Thessaloniki Greece
| | - Barbara Nikolaidou
- 3rd Department of Internal Medicine; Papageorgiou Hospital; Aristotle University of Thessaloniki; Thessaloniki Greece
| | - Panagiota Anyfanti
- 3rd Department of Internal Medicine; Papageorgiou Hospital; Aristotle University of Thessaloniki; Thessaloniki Greece
| | - Nikolaos Koletsos
- 3rd Department of Internal Medicine; Papageorgiou Hospital; Aristotle University of Thessaloniki; Thessaloniki Greece
| | - Anastasios Vamvakis
- 3rd Department of Internal Medicine; Papageorgiou Hospital; Aristotle University of Thessaloniki; Thessaloniki Greece
| | - Konstantina Dipla
- Laboratory of Exercise Physiology and Biochemistry; Department of Physical Education and Sports Science; Aristotle University of Thessaloniki; Serres Greece
| | - Antonios Lazaridis
- 3rd Department of Internal Medicine; Papageorgiou Hospital; Aristotle University of Thessaloniki; Thessaloniki Greece
| | - Stella Douma
- 3rd Department of Internal Medicine; Papageorgiou Hospital; Aristotle University of Thessaloniki; Thessaloniki Greece
| |
Collapse
|
8
|
Rodrigues S, Cepeda FX, Toschi-Dias E, Dutra-Marques ACB, Carvalho JC, Costa-Hong V, Alves MJNN, Rondon MUPB, Bortolotto LA, Trombetta IC. The role of increased glucose on neurovascular dysfunction in patients with the metabolic syndrome. J Clin Hypertens (Greenwich) 2017; 19:840-847. [PMID: 28868764 DOI: 10.1111/jch.13060] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 05/13/2017] [Accepted: 05/21/2017] [Indexed: 12/11/2022]
Abstract
Metabolic syndrome (MetS) causes autonomic alteration and vascular dysfunction. The authors investigated whether impaired fasting glucose (IFG) is the main cause of vascular dysfunction via elevated sympathetic tone in nondiabetic patients with MetS. Pulse wave velocity, muscle sympathetic nerve activity (MSNA), and forearm vascular resistance was measured in patients with MetS divided according to fasting glucose levels: (1) MetS+IFG (blood glucose ≥100 mg/dL) and (2) MetS-IFG (<100 mg/dL) compared with healthy controls. Patients with MetS+IFG had higher pulse wave velocity than patients with MetS-IFG and controls (median 8.0 [interquartile range, 7.2-8.6], 7.3 [interquartile range, 6.9-7.9], and 6.9 [interquartile range, 6.6-7.2] m/s, P=.001). Patients with MetS+IFG had higher MSNA than patients with MetS-IFG and controls, and patients with MetS-IFG had higher MSNA than controls (31±1, 26±1, and 19±1 bursts per minute; P<.001). Patients with MetS+IFG were similar to patients with MetS-IFG but had higher forearm vascular resistance than controls (P=.008). IFG was the only predictor variable of MSNA. MSNA was associated with pulse wave velocity (R=.39, P=.002) and forearm vascular resistance (R=.30, P=.034). In patients with MetS, increased plasma glucose levels leads to an adrenergic burden that can explain vascular dysfunction.
Collapse
Affiliation(s)
- Sara Rodrigues
- Heart Institute (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Felipe X Cepeda
- Heart Institute (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Edgar Toschi-Dias
- Heart Institute (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Akothirene C B Dutra-Marques
- Heart Institute (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Jefferson C Carvalho
- Heart Institute (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Valéria Costa-Hong
- Heart Institute (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Maria Janieire N N Alves
- Heart Institute (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | | | - Luiz A Bortolotto
- Heart Institute (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | | |
Collapse
|
9
|
Dzikowska-Diduch O, Domienik-Karłowicz J, Górska E, Demkow U, Pruszczyk P, Kostrubiec M. E-selectin and sICAM-1, biomarkers of endothelial function, predict recurrence of venous thromboembolism. Thromb Res 2017; 157:173-180. [PMID: 28780342 DOI: 10.1016/j.thromres.2017.07.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Revised: 06/28/2017] [Accepted: 07/25/2017] [Indexed: 10/19/2022]
Abstract
BACKGROUND Risk factors for atherosclerosis and venous thromboembolism (VTE) overlap and are mostly associated with endothelial dysfunction (ED). We hypothesized that ED is present in patients after the first episode of acute pulmonary embolism (APE) and predicts the risk of VTE recurrence. DESIGN AND METHODS Patients, at least 6months after the first episode of symptomatic, confirmed APE were included in this case-control study. The exclusion criteria were risk factors for cardiovascular diseases and other conditions associated with endothelial dysfunction. Eighty two patients (aged 38±11years; 44 M; 38 F) were enrolled in the study, 39 after provoked APE, 43 after unprovoked APE, and 30 controls (C) (aged 38±12years; 15 M, 15 F). In order to evaluate the endothelial function in patients with a history of APE flow-mediated dilation (FMD) of the brachial artery and biomarkers of endothelial dysfunction (sVCAM-1, sICAM-1, ADMA, E-selectin) were measured. Subsequently all patients were followed up in an outpatient clinic for VTE recurrence. RESULTS FMD was more often impaired in APE patients than in controls (5.3% (0.8-20.3) vs. 13.8% (4.1-24.3); p<0.0001). Biomarker levels differed between APE and C groups: sVCAM-1 (631ng/ml (105-2382) vs. 495ng/ml (348-934); p=0.04) and sICAM-1 (679ng/ml (279-1006) vs. 600ng/ml (394-766); p=0.002). There were 19 recurrences of VTE during the at least 12-month follow-up (15 with history of unprovoked-APE and 4 after provoked-APE). E-selectin ≥39ng/ml and sICAM-1≤655ng/ml indicated the group without recurrence of VTE. In a group of 43 unprovoked APE patients both E-selectin<39ng/ml and sICAM-1>655ng/ml were found in 17 subjects. Eleven of them (65%) were diagnosed with recurrent VTE. CONCLUSIONS Endothelial function is significantly impaired in patients after an episode of APE as indicated by FMD assessment and biomarker levels. Low concentrations of E-selectin and high levels of sICAM-1 are associated with a high risk of recurrent thromboembolism.
Collapse
Affiliation(s)
- Olga Dzikowska-Diduch
- The Medical University of Warsaw, Department of Internal Medicine & Cardiology, Poland.
| | | | - Elżbieta Górska
- The Medical University of Warsaw, Department of Laboratory Medicine and Clinical Immunology of Developmental Age, Poland
| | - Urszula Demkow
- The Medical University of Warsaw, Department of Laboratory Medicine and Clinical Immunology of Developmental Age, Poland
| | - Piotr Pruszczyk
- The Medical University of Warsaw, Department of Internal Medicine & Cardiology, Poland
| | - Maciej Kostrubiec
- The Medical University of Warsaw, Department of Internal Medicine & Cardiology, Poland
| |
Collapse
|
10
|
Zheng N, Wang K, He J, Qiu Y, Xie G, Su M, Jia W, Li H. Effects of ADMA on gene expression and metabolism in serum-starved LoVo cells. Sci Rep 2016; 6:25892. [PMID: 27180883 PMCID: PMC4867623 DOI: 10.1038/srep25892] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 04/25/2016] [Indexed: 11/29/2022] Open
Abstract
Serum starvation is a typical way for inducing tumor cell apoptosis and stress. Asymmetric dimethylarginine (ADMA) is an endogenous metabolite. Our previous study reveals the plasma ADMA level is elevated in colon cancer patients, which can attenuate serum starvation-induced apoptosis in LoVo cells. In current study, we evaluated the effects of ADMA on gene expression and metabolism in serum-starved LoVo cells with gene microarray and metabolomic approaches. Our results indicated that 96 h serum starvation induced comprehensive alterations at transcriptional level, and most of them were restored by ADMA. The main signaling pathways induced by serum starvation included cancers-related pathways, pathways in cell death, apoptosis, and cell cycle etc. Meanwhile, the metabolomic data showed serum-starved cells were clearly separated with control cells, but not with ADMA-treated cells in PCA model. The identified differential metabolites indicated serum starvation significantly suppressed TCA cycle, altered glucose and fatty acids metabolism, as well as nucleic acids metabolism. However, very few differential metabolites were identified between ADMA and serum-starved cells. In summary, our current results indicated serum starvation profoundly altered the gene expression and metabolism of LoVo cells, whereas ADMA could restore most of the changes at transcriptional level, but not at metabolic level.
Collapse
Affiliation(s)
- Ningning Zheng
- Center for Chinese Medical Therapy and Systems Biology, Shanghai University of Traditional Chinese MedicineShanghai 201203, China
| | - Ke Wang
- Laboratory of Integrative Medicine Surgery, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Jiaojiao He
- Center for Chinese Medical Therapy and Systems Biology, Shanghai University of Traditional Chinese MedicineShanghai 201203, China
| | - Yunping Qiu
- Stable Isotope and Metabolomics Core Facility, Diabetes Center Albert Einstein College of Medicine, 1300 Morris Part Ave, Bronx, New York 10461, USA
| | - Guoxiang Xie
- Cancer Epidemiology Program, University of Hawaii Cancer Center, Honolulu, Hawaii 96813, USA
| | - Mingming Su
- Cancer Epidemiology Program, University of Hawaii Cancer Center, Honolulu, Hawaii 96813, USA
| | - Wei Jia
- Center for Chinese Medical Therapy and Systems Biology, Shanghai University of Traditional Chinese MedicineShanghai 201203, China.,Cancer Epidemiology Program, University of Hawaii Cancer Center, Honolulu, Hawaii 96813, USA.,Center for Translational Medicine, and Shanghai Key Laboratory of Diabetes Mellitus, Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Houkai Li
- Center for Chinese Medical Therapy and Systems Biology, Shanghai University of Traditional Chinese MedicineShanghai 201203, China
| |
Collapse
|
11
|
Samson R, Lee A, Lawless S, Hsu R, Sander G. Novel Pathophysiological Mechanisms in Hypertension. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 956:21-35. [PMID: 27981434 DOI: 10.1007/5584_2016_96] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Hypertension is the most common disease affecting humans and imparts a significant cardiovascular and renal risk to patients. Extensive research over the past few decades has enhanced our understanding of the underlying mechanisms in hypertension. However, in most instances, the cause of hypertension in a given patient continues to remain elusive. Nevertheless, achieving aggressive blood pressure goals significantly reduces cardiovascular morbidity and mortality, as demonstrated in the recently concluded SPRINT trial. Since a large proportion of patients still fail to achieve blood pressure goals, knowledge of novel pathophysiologic mechanisms and mechanism based treatment strategies is crucial. The following chapter will review the novel pathophysiological mechanisms in hypertension, with a focus on role of immunity, inflammation and vascular endothelial homeostasis. The therapeutic implications of these mechanisms will be discussed where applicable.
Collapse
Affiliation(s)
- Rohan Samson
- Tulane University Heart and Vascular Institute, Tulane School of Medicine, 1430 Tulane Avenue, SL-48, New Orleans, LA, 70112, USA.
| | - Andrew Lee
- Tulane University Heart and Vascular Institute, Tulane School of Medicine, 1430 Tulane Avenue, SL-48, New Orleans, LA, 70112, USA
| | - Sean Lawless
- Tulane University Heart and Vascular Institute, Tulane School of Medicine, 1430 Tulane Avenue, SL-48, New Orleans, LA, 70112, USA
| | - Robert Hsu
- Tulane University Heart and Vascular Institute, Tulane School of Medicine, 1430 Tulane Avenue, SL-48, New Orleans, LA, 70112, USA
| | - Gary Sander
- Tulane University Heart and Vascular Institute, Tulane School of Medicine, 1430 Tulane Avenue, SL-48, New Orleans, LA, 70112, USA
| |
Collapse
|
12
|
Plasma arginine/ADMA ratio as a sensitive risk marker for atherosclerosis: Shimane CoHRE study. Atherosclerosis 2014; 239:61-6. [PMID: 25576847 DOI: 10.1016/j.atherosclerosis.2014.12.030] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Revised: 11/26/2014] [Accepted: 12/17/2014] [Indexed: 02/07/2023]
Abstract
BACKGROUND Asymmetric dimethylarginine (ADMA), which acts an endogenous inhibitor of nitric oxide synthase (NOS), is involved in the pathogenesis of cardiovascular disease. Arginine (Arg) may regulate vascular endothelial function, since Arg is the substrate of NO competing with ADMA. In our previous study, low Arg/ADMA ratio is an independent risk for microangiopathy-related cerebral damage. PURPOSE Here, we performed a cross-sectional study to evaluate the association between the Arg/ADMA ratio and the maximal intima-media thickness (IMT) in the carotid artery. SUBJECTS AND METHODS Participants were 785 community-dwelling Japanese people without any severe disorders. Plasma concentration of Arg and ADMA in fasting blood sample was determined using HPLC. IMT was measured in the bilateral carotid artery by ultrasonography. RESULTS Among quartiles stratified by the Arg/ADMA ratio, ANOVA showed a significant difference in IMT and the IMT in Q1 (the lowest quartile) was significantly higher than that in Q4 (the highest quartile). In multiple linear regression analysis, age, the male gender, lower BMI, the presence of hypertension and lower Arg/ADMA ratio were independently correlated with IMT, while IMT was not correlated with Arg or ADMA alone. In addition, the Arg/ADMA ratio was associated with IMT independent of age, sex, BMI and the presence of hypertension with odds ratio 0.21 (95%CI: 0.05-0.88) in multiple logistic regression analysis for IMT 1.5 mm or more. CONCLUSION Imbalance of Arg and ADMA is independently involved in the progression of atherosclerosis, and the Arg/ADMA ratio may be a sensitive marker for atherosclerosis.
Collapse
|
13
|
Li H, Zhou Y, Zhao A, Qiu Y, Xie G, Jiang Q, Zheng X, Zhong W, Sun X, Zhou Z, Jia W. Asymmetric dimethylarginine attenuates serum starvation-induced apoptosis via suppression of the Fas (APO-1/CD95)/JNK (SAPK) pathway. Cell Death Dis 2013; 4:e830. [PMID: 24091673 PMCID: PMC3824655 DOI: 10.1038/cddis.2013.345] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 08/06/2013] [Accepted: 08/07/2013] [Indexed: 12/21/2022]
Abstract
Asymmetric dimethylarginine (ADMA) is synthesized by protein arginine methyltransferases during methylation of protein arginine residues and released into blood upon proteolysis. Higher concentrations of ADMA in blood have been observed in patients with metabolic diseases and certain cancers. However, the role of ADMA in colon cancer has not been well investigated. ADMA serum levels in human patients diagnosed with colon cancer were found to be higher than those present in healthy subjects. ADMA treatment of LoVo cells, a human colon adenocarcinoma cell line, attenuated serum starvation-induced apoptosis and suppressed the activation of the Fas (APO-1/CD95)/JNK (SAPK) (c-Jun N terminal protein kinase/stress-activated protein kinase)pathway. ADMA also suppressed the activation of JNK triggered by death receptor ligand anti-Fas mAb and exogenous C2-ceramide. Moreover, we demonstrated that ADMA pretreatment protected LoVo cells from doxorubicin hydrochloride-induced cell death and activation of the Fas/JNK pathway. In summary, our results suggest that the elevated ADMA in colon cancer patients may contribute to the blocking of apoptosis of cancer cells in response to stress and chemotherapy.
Collapse
Affiliation(s)
- H Li
- 1] Center for Translational Medicine, Shanghai Jiao Tong University, Affiliated Sixth People's Hospital, Shanghai 200233, China [2] Center for Translational Biomedical Research, University of North Carolina at Greensboro, North Carolina Research Campus, Kannapolis, NC 28081, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Bai Y, Sun L, Du L, Zhang T, Xin W, Lan X, Du G. Association of circulating levels of asymmetric dimethylarginine (ADMA) with carotid intima-media thickness: evidence from 6168 participants. Ageing Res Rev 2013; 12:699-707. [PMID: 22353385 DOI: 10.1016/j.arr.2012.02.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Revised: 01/23/2012] [Accepted: 02/06/2012] [Indexed: 02/07/2023]
Abstract
BACKGROUND Epidemiologic investigations have linked the circulating levels of asymmetric dimethylarginine (ADMA), an endogenous inhibitor of nitric oxide synthase (NOS), to carotid intima-media thickness (IMT). However, these studies result in various extent of relation between ADMA and IMT, the conclusions were inconsistent, and the precise relationship is therefore under debate. The objective of this systematic review and meta-analysis is to provide an overview of the relevant studies evaluating the association of levels of ADMA with carotid IMT and to gain more robust estimate of the relationship. METHODS Studies were identified through PubMed, Cochrane Library, Embase, reviews, and reference lists of relevant papers. Weighted means of the correlation coefficient (R) and partial correlation coefficient (PR) were calculated for relations by using random-effect models. RESULTS 22 studies with a total of 6168 subjects were included in our meta-analysis. In an overall pooled estimate of correlation coefficient (R), levels of ADMA were significantly related to carotid IMT (pooled R: 0.29; 95% confidence interval [CI]: 0.20-0.38, P<0.001). Pooled estimate of partial correlation coefficient (PR) also resulted in a significant association of ADMA with carotid IMT (pooled PR: 0.21; 95% CI: 0.14-0.29; P<0.001). Furthermore, subgroup analysis found that the relation between ADMA and IMT was stronger in patients with chronic kidney diseases (CKDs) than that in subject with normal renal function. CONCLUSIONS Circulating levels of ADMA were positively related to carotid IMT, especially in patients with CKDs. The findings need confirmation in longitudinal and interventional studies.
Collapse
|
15
|
Transsulfuration pathway thiols and methylated arginines: the Hunter Community Study. PLoS One 2013; 8:e54870. [PMID: 23365680 PMCID: PMC3554694 DOI: 10.1371/journal.pone.0054870] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Accepted: 12/17/2012] [Indexed: 02/05/2023] Open
Abstract
Background Serum homocysteine, when studied singly, has been reported to be positively associated both with the endogenous nitric oxide synthase inhibitor asymmetric dimethylarginine [ADMA, via inhibition of dimethylarginine dimethylaminohydrolase (DDAH) activity] and with symmetric dimethylarginine (SDMA). We investigated combined associations between transsulfuration pathway thiols, including homocysteine, and serum ADMA and SDMA concentrations at population level. Methods Data on clinical and demographic characteristics, medication exposure, C-reactive protein, serum ADMA and SDMA (LC-MS/MS), and thiols (homocysteine, cysteine, taurine, glutamylcysteine, total glutathione, and cysteinylglycine; capillary electrophoresis) were collected from a sample of the Hunter Community Study on human ageing [n = 498, median age (IQR) = 64 (60–70) years]. Results Regression analysis showed that: a) age (P = 0.001), gender (P = 0.03), lower estimated glomerular filtration rate (eGFR, P = 0.08), body mass index (P = 0.008), treatment with beta-blockers (P = 0.03), homocysteine (P = 0.02), and glutamylcysteine (P = 0.003) were independently associated with higher ADMA concentrations; and b) age (P = 0.001), absence of diabetes (P = 0.001), lower body mass index (P = 0.01), lower eGFR (P<0.001), cysteine (P = 0.007), and glutamylcysteine (P<0.001) were independently associated with higher SDMA concentrations. No significant associations were observed between methylated arginines and either glutathione or taurine concentrations. Conclusions After adjusting for clinical, demographic, biochemical, and pharmacological confounders the combined assessment of transsulfuration pathway thiols shows that glutamylcysteine has the strongest and positive independent associations with ADMA and SDMA. Whether this reflects a direct effect of glutamylcysteine on DDAH activity (for ADMA) and/or cationic amino acid transport requires further investigations.
Collapse
|
16
|
Role of asymmetric dimethylarginine in the progression of carotid atherosclerosis in renal transplant patients. Int Urol Nephrol 2012; 45:1463-9. [DOI: 10.1007/s11255-012-0345-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2012] [Accepted: 11/20/2012] [Indexed: 12/12/2022]
|