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Yang J, Xu J, Xu S, Fan Z, Zhu C, Wan J, Yang J, Xing X. Oxidative stress in acute pulmonary embolism: emerging roles and therapeutic implications. Thromb J 2024; 22:9. [PMID: 38216919 PMCID: PMC10785361 DOI: 10.1186/s12959-023-00577-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 12/25/2023] [Indexed: 01/14/2024] Open
Abstract
Oxidative stress is an imbalance between the body's reactive oxygen species and antioxidant defense mechanisms. Oxidative stress is involved in the development of several cardiovascular diseases, such as pulmonary hypertension, atherosclerosis, and diabetes mellitus. A growing number of studies have suggested the potential role of oxidative stress in the pathogenesis of pulmonary embolism. Biomarkers of oxidative stress in pulmonary embolism have also been explored, such as matrix metalloproteinases, asymmetric dimethylarginine, and neutrophil/lymphocyte ratio. Here, we comprehensively summarize some oxidative stress mechanisms and biomarkers in the development of acute pulmonary embolism and summarize related treatments based on antioxidant stress to explore effective treatment strategies for acute pulmonary embolism.
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Affiliation(s)
- Jingchao Yang
- Department of Pulmonary and Critical Care Medicine, First Affiliated Hospital of Kunming Medical University, 650032, Kunming, China
| | - Jinzhu Xu
- Department of Pulmonary and Critical Care Medicine, Yuxi Municipal Hospital of T.C. M, 653100, Yuxi, China
| | - Shuanglan Xu
- Department of Pulmonary and Critical Care Medicine, Affiliated Hospital of Yunnan University, 650021, Kunming, China
| | - Zeqin Fan
- Department of Pulmonary and Critical Care Medicine, Affiliated Hospital of Yunnan University, 650021, Kunming, China
| | - Chenshao Zhu
- Department of Pulmonary and Critical Care Medicine, First Affiliated Hospital of Kunming Medical University, 650032, Kunming, China
| | - Jianyuan Wan
- Department of Pulmonary and Critical Care Medicine, First Affiliated Hospital of Kunming Medical University, 650032, Kunming, China
| | - Jiao Yang
- Department of Pulmonary and Critical Care Medicine, First Affiliated Hospital of Kunming Medical University, 650032, Kunming, China.
| | - Xiqian Xing
- Department of Pulmonary and Critical Care Medicine, Affiliated Hospital of Yunnan University, 650021, Kunming, China.
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Schrauben SJ, Sapa H, Xie D, Zhang X, Anderson AH, Shlipak MG, Hsu CY, Shafi T, Mehta R, Bhat Z, Brown J, Charleston J, Chen J, He J, Ix JH, Rao P, Townsend R, Kimmel PL, Vasan RS, Feldman HI, Seegmiller JC, Brunengraber H, Hostetter TH, Schelling JR. Association of urine and plasma ADMA with atherosclerotic risk in DKD cardiovascular disease risk in diabetic kidney disease: findings from the Chronic Renal Insufficiency Cohort (CRIC) study. Nephrol Dial Transplant 2023; 38:2809-2815. [PMID: 37230949 PMCID: PMC10689177 DOI: 10.1093/ndt/gfad103] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Indexed: 05/27/2023] Open
Abstract
BACKGROUND Chronic kidney disease (CKD) is associated with atherosclerotic cardiovascular disease (ASCVD) risk, especially among those with diabetes. Altered metabolism of solutes that accumulate in CKD [asymmetric dimethylarginine (ADMA), symmetric dimethylarginine (SDMA) and trimethylamine N-oxide (TMAO)] may reflect pathways linking CKD with ASCVD. METHODS This case-cohort study included Chronic Renal Insufficiency Cohort participants with baseline diabetes, estimated glomerular filtration rate <60 mL/min/1.73 m2, and without prior history for each outcome. The primary outcome was incident ASCVD (time to first myocardial infarction, stroke or peripheral artery disease event) and secondary outcome was incident heart failure. The subcohort comprised randomly selected participants meeting entry criteria. Plasma and urine ADMA, SDMA and TMAO concentrations were determined by liquid chromatography-tandem mass spectrometry. Associations of uremic solute plasma concentrations and urinary fractional excretions with outcomes were evaluated by weighted multivariable Cox regression models, adjusted for confounding covariables. RESULTS Higher plasma ADMA concentrations (per standard deviation) were associated with ASCVD risk [hazard ratio (HR) 1.30, 95% confidence interval (CI) 1.01-1.68]. Lower fractional excretion of ADMA (per standard deviation) was associated with ASCVD risk (HR 1.42, 95% CI 1.07-1.89). The lowest quartile of ADMA fractional excretion was associated with greater ASCVD risk (HR 2.25, 95% CI 1.08-4.69) compared with the highest quartile. Plasma SDMA and TMAO concentration and fractional excretion were not associated with ASCVD. Neither plasma nor fractional excretion of ADMA, SDMA and TMAO were associated with incident heart failure. CONCLUSION These data suggest that decreased kidney excretion of ADMA leads to increased plasma concentrations and ASCVD risk.
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Affiliation(s)
- Sarah J Schrauben
- Department of Medicine, Perelman School of Medicine, Center for Clinical Epidemiology and Biostatistics at the Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
- Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | | | - Dawei Xie
- Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Xiaoming Zhang
- Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Amanda Hyre Anderson
- Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
- Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, USA
| | - Michael G Shlipak
- Kidney Health Research Collaborative, San Francisco Veterans Affairs Healthcare System, San Francisco, CA, USA
| | - Chi-yuan Hsu
- Department of Medicine, Division of Nephrology, University of California, San Francisco, San Francisco, CA, USA
| | - Tariq Shafi
- Department of Medicine, Division of Nephrology, Houston Methodist Hospital, Houston, TX, USA
| | - Rupal Mehta
- Department of Medicine, Division of Nephrology and Hypertension, Northwestern University, Chicago, IL, USA
| | - Zeenat Bhat
- Department of Medicine, Wayne State University, Detroit, MI, USA
| | - Julie Brown
- Department of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Jeanne Charleston
- Department of Internal Medicine, Section of Nephrology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Jing Chen
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Jiang He
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Joachim H Ix
- Department of Medicine, Division of Nephrology-Hypertension, UC San Diego School of Medicine, San Diego, CA, USA
| | - Pandurango Rao
- Department of Medicine, Division of Nephrology, University of Michigan, Ann Arbor, MI, USA
| | - Ray Townsend
- Department of Medicine, Perelman School of Medicine, Center for Clinical Epidemiology and Biostatistics at the Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Paul L Kimmel
- Division of Kidney, Urologic & Hematologic Diseases, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD, USA
| | - Ramachandran S Vasan
- The University of Texas School of Public Health San Antonio, San Antonio, TX, USA
| | - Harold I Feldman
- Department of Medicine, Perelman School of Medicine, Center for Clinical Epidemiology and Biostatistics at the Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
- Patient-Centered Outcomes Research Institute, Washington, DC, USA
| | - Jesse C Seegmiller
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, USA
| | - Henri Brunengraber
- Departments of Nutrition and Biochemistry, Case Western University School of Medicine, Cleveland, OH, USA
| | - Thomas H Hostetter
- Department of Medicine, Division of Nephrology, University of North Carolina, Chapel Hill, NC, USA
| | - Jeffrey R Schelling
- Departments of Physiology & Biophysics and Medicine, Case Western Reserve University School of Medicine, Cleveland, OH, USA
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Wenninger N, Chaiyo S, Kollau A, Kalcher K, Ortner A. Paper-based electrochemical immunosensor for the determination of symmetric dimethylarginine. Biosens Bioelectron 2023; 237:115481. [PMID: 37379792 DOI: 10.1016/j.bios.2023.115481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 06/30/2023]
Abstract
In this work, we present the development of an immunosensor for the direct, selective, and sensitive determination of symmetric dimethylarginine (SDMA) in urine, in view of the emerging role of this molecule as a biomarker for renal disease. SDMA is almost completely excreted by the kidneys, hence in renal dysfunction, the excretion is decreased, resulting in accumulation in plasma. Reference values for plasma or serum have already been established in small animal practice. Values < 15 μg/dL are considered normal, 15-19 μg/dL are values of concern, and at values > 20 μg/dL kidney disease is likely. The proposed electrochemical paper-based sensing platform uses anti-SDMA antibodies for targeted detection of SDMA. Quantification is related to a decrease in the signal of a redox indicator due to the formation of an immunocomplex that interferes with electron transfer. Square wave voltammetry measurements showed a linear correlation of the peak decline for 50 nM - 1 μM SDMA with a detection limit of 15 nM. The influence of common physiological interferences caused no significant peak reduction, indicating excellent selectivity. The proposed immunosensor was successfully applied for the quantification of SDMA in human urine of healthy individuals. Surveillance of SDMA concentration in urine could prove to be very valuable in the diagnosis or monitoring of renal disease.
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Affiliation(s)
- Nadine Wenninger
- Institute of Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, University of Graz, Schubertstraße 1, Graz, 8010, Austria
| | - Sudkate Chaiyo
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Alexander Kollau
- Institute of Pharmaceutical Sciences, Department of Pharmacology and Toxicology, University of Graz, Humboldtstraße 46/I, Graz, 8010, Austria
| | - Kurt Kalcher
- Institute of Chemistry, Department of Analytical Chemistry, University of Graz, Universitätsplatz 1, Graz, 8010, Austria
| | - Astrid Ortner
- Institute of Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, University of Graz, Schubertstraße 1, Graz, 8010, Austria.
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Tain YL, Hsu CN. The NOS/NO System in Renal Programming and Reprogramming. Antioxidants (Basel) 2023; 12:1629. [PMID: 37627624 PMCID: PMC10451971 DOI: 10.3390/antiox12081629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/08/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023] Open
Abstract
Nitric oxide (NO) is a gaseous signaling molecule with renoprotective properties. NO can be produced in NO synthase (NOS)-dependent or -independent manners. NO deficiency plays a decisive role in chronic kidney disease (CKD). Kidney development can be affected in response to adverse intrauterine conditions that induce renal programming, thereby raising the risk of developing CKD in adulthood. Conversely, detrimental programming processes could be postponed or halted prior to the onset of CKD by early treatments, namely reprogramming. The current review provides an overview of the NOS/NO research performed in the context of renal programming and reprogramming. NO deficiency has been increasingly found to interact with the different mechanisms behind renal programming, such as oxidative stress, aberrant function of the renin-angiotensin system, disturbed nutrient-sensing mechanisms, dysregulated hydrogen sulfide signaling, and gut microbiota dysbiosis. The supplementation of NOS substrates, the inhibition of asymmetric dimethylarginine (ADMA), the administration of NO donors, and the enhancement of NOS during gestation and lactation have shown beneficial effects against renal programming in preclinical studies. Although human data on maternal NO deficiency and offspring kidney disease are scarce, experimental data indicate that targeting NO could be a promising reprogramming strategy in the setting of renal programming.
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Affiliation(s)
- You-Lin Tain
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan;
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Chien-Ning Hsu
- Department of Pharmacy, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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Ragavan VN, Nair PC, Jarzebska N, Angom RS, Ruta L, Bianconi E, Grottelli S, Tararova ND, Ryazanskiy D, Lentz SR, Tommasi S, Martens-Lobenhoffer J, Suzuki-Yamamoto T, Kimoto M, Rubets E, Chau S, Chen Y, Hu X, Bernhardt N, Spieth PM, Weiss N, Bornstein SR, Mukhopadhyay D, Bode-Böger SM, Maas R, Wang Y, Macchiarulo A, Mangoni AA, Cellini B, Rodionov RN. A multicentric consortium study demonstrates that dimethylarginine dimethylaminohydrolase 2 is not a dimethylarginine dimethylaminohydrolase. Nat Commun 2023; 14:3392. [PMID: 37296100 PMCID: PMC10256801 DOI: 10.1038/s41467-023-38467-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 04/27/2023] [Indexed: 06/12/2023] Open
Abstract
Dimethylarginine dimethylaminohydrolase 1 (DDAH1) protects against cardiovascular disease by metabolising the risk factor asymmetric dimethylarginine (ADMA). However, the question whether the second DDAH isoform, DDAH2, directly metabolises ADMA has remained unanswered. Consequently, it is still unclear if DDAH2 may be a potential target for ADMA-lowering therapies or if drug development efforts should focus on DDAH2's known physiological functions in mitochondrial fission, angiogenesis, vascular remodelling, insulin secretion, and immune responses. Here, an international consortium of research groups set out to address this question using in silico, in vitro, cell culture, and murine models. The findings uniformly demonstrate that DDAH2 is incapable of metabolising ADMA, thus resolving a 20-year controversy and providing a starting point for the investigation of alternative, ADMA-independent functions of DDAH2.
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Affiliation(s)
- Vinitha N Ragavan
- Department of Internal Medicine III, Technische Universität Dresden, Dresden, Germany
- Department of Clinical Pharmacology, College of Medicine and Public Health, Flinders University and Flinders Medical Centre, Bedford Park, Adelaide, SA, Australia
| | - Pramod C Nair
- Department of Clinical Pharmacology, College of Medicine and Public Health, Flinders University and Flinders Medical Centre, Bedford Park, Adelaide, SA, Australia
- Flinders Health and Medical Research Institute (FHMRI), College of Medicine and Public Health, Flinders University, Adelaide, SA, Australia
- Cancer Program, South Australian Health and Medical Research Institute (SAHMRI), University of Adelaide, Adelaide, SA, Australia
- Discipline of Medicine, Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Natalia Jarzebska
- Department of Internal Medicine III, Technische Universität Dresden, Dresden, Germany
| | - Ramcharan Singh Angom
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine and Science, Jacksonville, FL, USA
| | - Luana Ruta
- Department of Pharmaceutical Sciences, University of Perugia, via del Liceo 1, Perugia, Italy
| | - Elisa Bianconi
- Department of Pharmaceutical Sciences, University of Perugia, via del Liceo 1, Perugia, Italy
| | - Silvia Grottelli
- Department of Medicine and Surgery, University of Perugia, P.le L. Sevari 1, Perugia, Italy
| | | | | | - Steven R Lentz
- Department of Internal Medicine, The University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Sara Tommasi
- Department of Clinical Pharmacology, College of Medicine and Public Health, Flinders University and Flinders Medical Centre, Bedford Park, Adelaide, SA, Australia
| | | | - Toshiko Suzuki-Yamamoto
- Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, Okayama, Japan
| | - Masumi Kimoto
- Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, Okayama, Japan
| | - Elena Rubets
- Department of Internal Medicine III, Technische Universität Dresden, Dresden, Germany
| | - Sarah Chau
- Department of Cardiovascular Medicine, Mayo Clinic College of Medicine and Science, Rochester, NY, USA
| | - Yingjie Chen
- Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, MS, USA
| | - Xinli Hu
- Institute of Molecular Medicine, Beijing University, Beijing, China
| | - Nadine Bernhardt
- Department of Psychiatry and Psychotherapy, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Peter M Spieth
- Department of Anesthesiology and Critical Care Medicine, University Hospital Dresden, Technische Universität Dresden, Dresden, Germany
| | - Norbert Weiss
- Department of Internal Medicine III, Technische Universität Dresden, Dresden, Germany
| | - Stefan R Bornstein
- Department of Internal Medicine III, Technische Universität Dresden, Dresden, Germany
- School of Cardiovascular and Metabolic Medicine and Sciences, Faculty of Life Sciences & Medicine, King's College London, London, UK
| | - Debabrata Mukhopadhyay
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine and Science, Jacksonville, FL, USA
| | - Stefanie M Bode-Böger
- Institute of Clinical Pharmacology, Otto von Guericke University, Magdeburg, Germany
| | - Renke Maas
- Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- FAU New - Research Center for New Bioactive Compounds, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Ying Wang
- Department of Cardiovascular Medicine, Mayo Clinic College of Medicine and Science, Rochester, NY, USA
| | - Antonio Macchiarulo
- Department of Pharmaceutical Sciences, University of Perugia, via del Liceo 1, Perugia, Italy
| | - Arduino A Mangoni
- Department of Clinical Pharmacology, College of Medicine and Public Health, Flinders University and Flinders Medical Centre, Bedford Park, Adelaide, SA, Australia
| | - Barbara Cellini
- Department of Medicine and Surgery, University of Perugia, P.le L. Sevari 1, Perugia, Italy
| | - Roman N Rodionov
- Department of Internal Medicine III, Technische Universität Dresden, Dresden, Germany.
- College of Medicine and Public Health, Flinders University and Flinders Medical Center, Adelaide, SA, Australia.
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Yoshikawa T, Obayashi K, Miyata K, Jimura H, Saeki K, Ogata N. Circadian blood pressure variability and asymmetric dimethylarginine in patients with glaucoma: cross-sectional study of The LIGHT cohort. J Hypertens 2023; 41:1018-1023. [PMID: 37016909 DOI: 10.1097/hjh.0000000000003429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2023]
Abstract
OBJECTIVE Glaucoma is reportedly associated with asymmetric dimethylarginine (ADMA) and circadian blood pressure (BP) variability, including night-time SBP. We determined whether ADMA level is associated with night-time SBP in patients with glaucoma. METHODS In this cross-sectional study, we measured the serum ADMA level and ambulatory BP of 163 patients with glaucoma and 705 participants without glaucoma. Based on the tertiles of serum ADMA level, the patients were divided into three groups: low, intermediate, and high-ADMA. Night-time SBP was determined based on ambulatory BP measured every 30 min for 48 h. The nondipper BP pattern was defined as having a night-time mean SBP decline of less than 10% relative to the mean daytime SBP. RESULTS In the glaucoma group, the night-time SBP in the high-ADMA group was significantly higher than in the low-ADMA group (123.0 and 114.4 mmHg, respectively; P = 0.003). Multivariable analysis adjusted for the potential confounders showed the night-time SBP, and the odds ratio for nondipper in the high-ADMA group were also significantly higher than in the low-ADMA group ( P = 0.030 and P = 0.021, respectively). Significant associations between continuous serum ADMA levels with night-time SBP and nondipper were also found ( P = 0.002 and 0.006, respectively). In the control group, however, no significant associations were found between serum ADMA levels and night-time SBP and nondipper. A significant interaction effect of the serum ADMA levels and glaucoma on nondipper was found ( P = 0.004). CONCLUSION Serum ADMA level was significantly associated with the disturbance of circadian BP variability in patients with glaucoma.
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Affiliation(s)
- Tadanobu Yoshikawa
- Department of Ophthalmology, Nara Medical University School of Medicine, Nara
- Yoshikawa Eye Clinic, Osaka
| | - Kenji Obayashi
- Department of Epidemiology, Nara Medical University School of Medicine, Nara, Japan
| | - Kimie Miyata
- Department of Ophthalmology, Nara Medical University School of Medicine, Nara
| | - Hironobu Jimura
- Department of Ophthalmology, Nara Medical University School of Medicine, Nara
| | - Keigo Saeki
- Department of Epidemiology, Nara Medical University School of Medicine, Nara, Japan
| | - Nahoko Ogata
- Department of Ophthalmology, Nara Medical University School of Medicine, Nara
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Drohomirecka A, Waś J, Wiligórska N, Rywik TM, Komuda K, Sokołowska D, Lutyńska A, Zieliński T. L-arginine and Its Derivatives Correlate with Exercise Capacity in Patients with Advanced Heart Failure. Biomolecules 2023; 13:biom13030423. [PMID: 36979359 PMCID: PMC10046255 DOI: 10.3390/biom13030423] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 01/18/2023] [Accepted: 02/22/2023] [Indexed: 03/03/2023] Open
Abstract
Methylated arginine metabolites interrupt nitric oxide synthesis, which can result in endothelium dysfunction and inadequate vasodilation. Since little is known about the dynamics of arginine derivatives in patients with heart failure (HF) during physical exercise, we aimed to determine this as well as its impact on the patient outcomes. Fifty-one patients with HF (left ventricle ejection fraction-LVEF ≤ 35%, mean 21.7 ± 5.4%) underwent the cardiopulmonary exercise test (CPET). Plasma concentrations of L-arginine, citrulline, ornithine, asymmetric dimethylarginine (ADMA), and symmetric dimethylarginine (SDMA) were measured before and directly after CPET. All patients were followed for a mean of 23.5 ± 12.6 months. The combined endpoint was: any death, urgent heart transplantation, or urgent LVAD implantation. L-arginine concentrations increased significantly after CPET (p = 0.02), when ADMA (p = 0.01) and SDMA (p = 0.0005) decreased. The parameters of better exercise capacity were positively correlated with post-CPET concentration of L-arginine and inversely with post-CPET changes in ADMA, SDMA, and baseline and post-CPET SDMA concentrations. Baseline and post-CPET SDMA concentrations increased the risk of endpoint occurrence (HR 1.02, 95% CI 1.009–1.03, p = 0.04 and HR 1.02, 95% CI 1.01–1.03, p = 0.02, respectively). In conclusion, in patients with HF, extensive exercise is accompanied by changes in arginine derivatives that can reflect endothelium function. These observations may contribute to the explanation of the pathophysiology of exercise intolerance in HF.
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Affiliation(s)
- Anna Drohomirecka
- Department of Heart Failure and Transplantation, National Institute of Cardiology, Alpejska 42, 04-628 Warsaw, Poland
| | - Joanna Waś
- Department of Medical Biology, National Institute of Cardiology, 04-628 Warsaw, Poland
| | - Natalia Wiligórska
- Department of Heart Failure and Transplantation, National Institute of Cardiology, Alpejska 42, 04-628 Warsaw, Poland
| | - Tomasz M. Rywik
- Department of Heart Failure and Transplantation, National Institute of Cardiology, Alpejska 42, 04-628 Warsaw, Poland
- Correspondence:
| | - Krzysztof Komuda
- Department of Heart Failure and Transplantation, National Institute of Cardiology, Alpejska 42, 04-628 Warsaw, Poland
| | - Dorota Sokołowska
- Department of Medical Biology, National Institute of Cardiology, 04-628 Warsaw, Poland
| | - Anna Lutyńska
- Department of Medical Biology, National Institute of Cardiology, 04-628 Warsaw, Poland
| | - Tomasz Zieliński
- Department of Heart Failure and Transplantation, National Institute of Cardiology, Alpejska 42, 04-628 Warsaw, Poland
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Tian Q, Mitchell BA, Moaddel R, Zoccali C, Bandinelli S, Ferrucci L. Metabolomic markers mediate erythrocyte anisocytosis in older adults: Results from three independent aging cohorts. J Intern Med 2023; 293:589-599. [PMID: 36739565 DOI: 10.1111/joim.13612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Anisocytosis reflects unequal-sized red blood cells and is quantified using red blood cell distribution width (RDW). RDW increases with age and has been consistently associated with adverse health outcomes, such as cardiovascular disease and mortality. Why RDW increases with age is not understood. We aimed to identify plasma metabolomic markers mediating anisocytosis with aging. METHODS We performed mediation analyses of plasma metabolomics on the association between age and RDW using resampling techniques after covariate adjustment. We analyzed data from adults aged 70 or older from the main discovery cohort of the Baltimore Longitudinal Study of Aging (BLSA, n = 477, 46% women) and validation cohorts of the Health, Aging and Body Composition Study (Health ABC, n = 620, 52% women) and Invecchiare in Chianti, Aging in the Chianti Area (InCHIANTI) study (n = 735, 57% women). Plasma metabolomics was assayed using the Biocrates MxP Quant 500 kit in BLSA and Health ABC and liquid chromatography with tandem mass spectrometry in InCHIANTI. RESULTS In all three cohorts, symmetric dimethylarginine (SDMA) significantly mediated the association between age and RDW. Asymmetric dimethylarginine (ADMA) and 1-methylhistidine were also significant mediators in the discovery cohort and one validation cohort. In the discovery cohort, we also found choline, homoarginine, and several long-chain triglycerides significantly mediated the association between age and RDW. CONCLUSIONS AND RELEVANCE This metabolomics study of three independent aging cohorts identified a specific set of metabolites mediating anisocytosis with aging. Whether SDMA, ADMA, and 1-methylhistidine are released by the damaged erythrocytes with high RDW or they affect the physiology of erythrocytes causing high RDW should be further investigated.
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Affiliation(s)
- Qu Tian
- Longitudinal Studies Section, Translational Gerontology Branch, National Institute on Aging, Baltimore, Maryland, USA
| | - Brendan A Mitchell
- Longitudinal Studies Section, Translational Gerontology Branch, National Institute on Aging, Baltimore, Maryland, USA
| | - Ruin Moaddel
- Laboratory of Clinical Investigation, National Institute on Aging, Baltimore, Maryland, USA
| | - Carmine Zoccali
- Institute of Biology and Molecular Genetics (BIOGEM), Ariano Irpino, Italy.,Associazione Ipertensione Nefrologia e Trapianto Renale (IPNET), Reggio Calabria, Italy
| | | | - Luigi Ferrucci
- Longitudinal Studies Section, Translational Gerontology Branch, National Institute on Aging, Baltimore, Maryland, USA
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Mochol J, Gawryś J, Szahidewicz-Krupska E, Wiśniewski J, Fortuna P, Rola P, Martynowicz H, Doroszko A. Effect of Obstructive Sleep Apnea and CPAP Treatment on the Bioavailability of Erythrocyte and Plasma Nitric Oxide. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:14719. [PMID: 36429438 PMCID: PMC9690918 DOI: 10.3390/ijerph192214719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/05/2022] [Accepted: 11/07/2022] [Indexed: 06/16/2023]
Abstract
INTRODUCTION Endothelial dysfunction resulting from decreased nitric oxide (NO) bioavailability is an important mechanism that increases cardiovascular risk in subjects with obstructive sleep apnea (OSA). NO is produced by nitric oxide synthase (NOS) in a reaction that converts L-arginine to L-citrulline. Asymmetric-dimethylarginine (ADMA) is created by L-arginine and is a naturally occurring competitive inhibitor of nitric oxide synthase (NOS). The aim of our study was to verify if erythrocytes could play a role in the storage and accumulation of ADMA in OSA patients. The crosstalk between erythrocyte-ADMA, SDMA, L-arginine, and L-citrulline levels and endothelial function was investigated in OSA subjects both at baseline and prospectively following 1-year CPAP (continuous positive airway pressure) treatment. MATERIAL AND METHODS A total of 46 subjects with OSA were enrolled in this study and divided into two groups: those with moderate-to-severe OSA and those with mild or no OSA. A physical examination was followed by blood collection for the assessment of biochemical cardiovascular risk factors and the nitric oxide bioavailability parameters both in plasma and erythrocytes. Vasodilative endothelial function was assessed using Laser Doppler Flowmetry (LDF). RESULTS No significant changes regarding the NO pathway metabolites were noted apart from the plasma L-citrulline concentration, which was decreased in patients with OSA (26.9 ± 7.4 vs. 33.1 ± 9.4 μM, p < 0.05). The erythrocyte ADMA concentration was lower than in plasma irrespective of the presence of OSA (0.33 ± 0.12 vs. 0.45 ± 0.08 μM in OSA, p < 0.05 and 0.33 ± 0.1 vs. 0.45 ± 0.07 μM in the control, p < 0.05). No significant changes regarding the LDF were found. CPAP treatment did not change the levels of NO metabolites in the erythrocytes. CONCLUSIONS The erythrocyte pool of the NO metabolic pathway intermediates does not depend on OSA and its treatment, whereas the erythrocytes could constitute a high-volume buffer in their storage Hence, the results from this prospective study are a step forward in understanding the role of the erythrocyte compartment and the intra-erythrocyte pathways regulating NO bioavailability and paracrine endothelial function in the hypoxia-reoxygenation setting, such as obstructive sleep apnea.
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Affiliation(s)
- Jakub Mochol
- Clinical Department of Internal and Occupational Diseases, Hypertension and Clinical Oncology, Faculty of Medicine, Wroclaw Medical University, 50-367 Wroclaw, Poland
| | - Jakub Gawryś
- Clinical Department of Internal and Occupational Diseases, Hypertension and Clinical Oncology, Faculty of Medicine, Wroclaw Medical University, 50-367 Wroclaw, Poland
| | - Ewa Szahidewicz-Krupska
- Clinical Department of Internal and Occupational Diseases, Hypertension and Clinical Oncology, Faculty of Medicine, Wroclaw Medical University, 50-367 Wroclaw, Poland
| | - Jerzy Wiśniewski
- Department of Biochemistry and Immunochemistry, Faculty of Medicine, Wroclaw Medical University, 50-367 Wroclaw, Poland
- Department of Biochemistry, Molecular Biology and Biotechnology, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
| | - Paulina Fortuna
- Department of Biochemistry and Immunochemistry, Faculty of Medicine, Wroclaw Medical University, 50-367 Wroclaw, Poland
| | - Piotr Rola
- Clinical Department of Internal and Occupational Diseases, Hypertension and Clinical Oncology, Faculty of Medicine, Wroclaw Medical University, 50-367 Wroclaw, Poland
- Department of Cardiology, Provincial Specialized Hospital, 59-220 Legnica, Poland
| | - Helena Martynowicz
- Clinical Department of Internal and Occupational Diseases, Hypertension and Clinical Oncology, Faculty of Medicine, Wroclaw Medical University, 50-367 Wroclaw, Poland
| | - Adrian Doroszko
- Clinical Department of Internal and Occupational Diseases, Hypertension and Clinical Oncology, Faculty of Medicine, Wroclaw Medical University, 50-367 Wroclaw, Poland
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10
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Jezierska M, Stefanowicz J. Asymmetric and Symmetric Dimethylarginines as Renal Function Parameters in Paediatric Kidney Diseases: A Literature Review from 2003 to 2022. CHILDREN (BASEL, SWITZERLAND) 2022; 9:1668. [PMID: 36360396 PMCID: PMC9688657 DOI: 10.3390/children9111668] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 10/26/2022] [Accepted: 10/27/2022] [Indexed: 08/27/2023]
Abstract
Asymmetric dimethylarginine (ADMA) and symmetric dimethylarginine (SDMA), inhibitors of nitric oxide synthase, play important roles in many processes in the body. Most data in the literature concern their importance in adult chronic kidney disease (CKD). According to them, SDMA well reflects the glomerular filtration rate (GFR), and higher ADMA concentrations are associated with hypertension and higher mortality. In addition, both substances are recognised cardiovascular risk factors in CKD. The purpose of this review was to summarise the studies on dimethylarginines in renal diseases in children, about which we have much fewer data. The review focuses specifically on dimethylarginine's relation to routinely used renal function parameters. Finally, we analysed 21 of the 55 articles published between 2003 and 2022 on dimethylarginines in kidney diseases in children (from birth to 18 years of age), obtained by searching PubMed/MEDLINE (search terms: "dimethylarginine" and "kidney").
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Affiliation(s)
- Michalina Jezierska
- Department of Paediatrics, Haematology and Oncology, Faculty of Medicine, Medical University of Gdansk, 7 Debinki Street, 80-211 Gdansk, Poland
- Department of Paediatrics, Haematology and Oncology University Clinical Centre, 7 Debinki Street, 80-952 Gdansk, Poland
| | - Joanna Stefanowicz
- Department of Paediatrics, Haematology and Oncology, Faculty of Medicine, Medical University of Gdansk, 7 Debinki Street, 80-211 Gdansk, Poland
- Department of Paediatrics, Haematology and Oncology University Clinical Centre, 7 Debinki Street, 80-952 Gdansk, Poland
- Faculty of Health Sciences, Medical University of Gdansk, 7 Debinki Street, 80-211 Gdansk, Poland
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11
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Erdogan A, Keskin E, Sambel M, Mertoglu C. Assessing the nitric oxide and asymmetric dimethylarginine levels in lifelong premature ejaculation: A prospective study. Rev Int Androl 2022; 20:225-230. [DOI: 10.1016/j.androl.2021.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 01/15/2021] [Accepted: 02/14/2021] [Indexed: 10/16/2022]
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12
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Coyne MJ, Drake C, McCrann DJ, Kincaid D. The association between symmetric dimethylarginine concentrations and various neoplasms in dogs and cats. Vet Comp Oncol 2022; 20:846-853. [PMID: 35718995 DOI: 10.1111/vco.12845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 06/15/2022] [Accepted: 06/15/2022] [Indexed: 11/29/2022]
Abstract
Following the introduction of the symmetric dimethylarginine (SDMA) immunoassay, cases were reported where the SDMA concentration was markedly increased above the reference interval (RI) with neither concurrent increases in serum creatinine (Cr) concentrations nor clinical signs of kidney disease. Many of these animals were also concurrently diagnosed with cancer, most commonly lymphoma. The purpose of the study was to evaluate the association of increased SDMA in dogs and cats with lymphoma and other cancers as compared with age- and breed-matched non-tumour controls. In this retrospective case-control study, serum chemistry results from 1804 tumour cases, and age- and breed-matched non-tumour control animals were used. Matched-pair odds ratios between animals diagnosed with neoplasms and non-tumour controls for dichotomized SDMA values were determined by tumour type. SDMA concentrations were significantly higher in dogs and cats with lymphoma (p < .0001) compared with non-tumour controls. The odds ratio for increased SDMA concentrations in dogs with lymphoma was 10.0 (95% CI, 5.98-16.72) and for cats with lymphoma was 3.04 (95% CI 1.95-4.73). A significant number of canine and feline lymphoma cases had an increased SDMA concentration not associated with an increased Cr concentration (p < .001). Canine and feline lymphoma patients have an increased odds of having a SDMA concentration above the RI at diagnosis. Further characterization and evaluation of dogs and cats with lymphoma is required to help understand the mechanism(s) and the clinical significance of these alterations.
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Affiliation(s)
- Michael J Coyne
- IDEXX Laboratories, Inc., One IDEXX Drive, Westbrook, Maine, USA
| | - Corie Drake
- IDEXX Laboratories, Inc., One IDEXX Drive, Westbrook, Maine, USA
| | - Donald J McCrann
- IDEXX Laboratories, Inc., One IDEXX Drive, Westbrook, Maine, USA
| | - David Kincaid
- IDEXX Laboratories, Inc., One IDEXX Drive, Westbrook, Maine, USA
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13
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Doneray E, Yazici KU, Yazici IP, Ustundag B. Altered Arginine/Nitric Oxide Pathway in Children Diagnosed Attention Deficit Hyperactivity Disorder, and the Effect of 10 Weeks Methylphenidate Treatment. CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE 2022; 20:350-363. [PMID: 35466106 PMCID: PMC9048004 DOI: 10.9758/cpn.2022.20.2.350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 06/26/2021] [Accepted: 07/02/2021] [Indexed: 11/23/2022]
Abstract
Objective In this study, we investigated the levels of arginine, nitric oxide (NO), asymmetric dimethylarginine (ADMA), and adrenomedullin that are presumed to play a role in attention deficit hyperactivity disorder (ADHD) etiology, and to compare the findings with healthy controls. Methods Thirty ADHD patients and thirty healthy control subjects aged 6−12 years were included in the study. Sociodemographic data form, Schedule for Affective Disorders and Schizophrenia for School Age Children-Present and Lifetime Version; Conners’ Parent/Teacher Rating Scale-Revised Long Form; Children’s Depression Inventory; and The State-Trait Anxiety Inventory for Children were applied to all cases. All participants included in the study were evaluated in terms of their serum arginine, NO, ADMA, and adrenomedullin levels. Subsequently, methylphenidate treatment was started in ADHD patients and blood parameters were tested again in the tenth week of treatment. Results At the start of the study, arginine and ADMA levels were significantly higher and NO and adrenomedullin levels were significantly lower in the ADHD group compared to the control group. Post-treatment arginine and ADMA levels were found to be significantly lower than in the pre-treatment period. There were no significant differences in NO and adrenomedullin levels before and after treatment. There was no correlation between scale scores and blood parameters. Conclusion These variations in the blood parameters of the ADHD group seem to be worth further investigation. Studies to be conducted with larger sample groups after longer-term treatment may provide new information about the alterations in neurobiological processes related to ADHD etiology and treatment.
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Affiliation(s)
- Ebru Doneray
- Department of Child and Adolescent Psychiatry, Sanliurfa Training and Research Hospital, Sanliurfa, Turkey
| | - Kemal Utku Yazici
- Department of Child and Adolescent Psychiatry, Firat University Faculty of Medicine, Elazig, Turkey
| | - Ipek Percinel Yazici
- Department of Child and Adolescent Psychiatry, Firat University Faculty of Medicine, Elazig, Turkey
| | - Bilal Ustundag
- Department of Biochemistry, Firat University Faculty of Medicine, Elazig, Turkey
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14
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Cheng Y, Chen Y, Wang G, Liu P, Xie G, Jing H, Chen H, Fan Y, Wang M, Zhou J. Protein Methylation in Diabetic Kidney Disease. Front Med (Lausanne) 2022; 9:736006. [PMID: 35647002 PMCID: PMC9133329 DOI: 10.3389/fmed.2022.736006] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Accepted: 03/07/2022] [Indexed: 11/13/2022] Open
Abstract
Chronic kidney disease (CKD) is defined by persistent urine aberrations, structural abnormalities, or impaired excretory renal function. Diabetes is the leading cause of CKD. Their common pathological manifestation is renal fibrosis. Approximately half of all patients with type 2 diabetes and one-third with type 1 diabetes will develop CKD. However, renal fibrosis mechanisms are still poorly understood, especially post-transcriptional and epigenetic regulation. And an unmet need remains for innovative treatment strategies for preventing, arresting, treating, and reversing diabetic kidney disease (DKD). People believe that protein methylation, including histone and non-histone, is an essential type of post-translational modification (PTM). However, prevalent reviews mainly focus on the causes such as DNA methylation. This review will take insights into the protein part. Furthermore, by emphasizing the close relationship between protein methylation and DKD, we will summarize the clinical research status and foresee the application prospect of protein methyltransferase (PMT) inhibitors in DKD treatment. In a nutshell, our review will contribute to a more profound understanding of DKD’s molecular mechanism and inspire people to dig into this field.
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Affiliation(s)
- Ye Cheng
- Department of Anesthesiology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Yanna Chen
- Department of Anesthesiology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Guodong Wang
- Department of Anesthesiology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Pei Liu
- Department of Anesthesiology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Guiling Xie
- Department of Anesthesiology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Huan Jing
- Department of Anesthesiology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Hongtao Chen
- Department of Anesthesiology, The Eighth People’s Hospital of Guangzhou, Guangzhou, China
| | - Youlin Fan
- Department of Anesthesiology, Guangzhou Panyu Central Hospital of Panyu District, Guangzhou, China
| | - Min Wang
- Department of Anesthesiology, The Gaoming People’s Hospital, Foshan, China
| | - Jun Zhou
- Department of Anesthesiology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
- *Correspondence: Jun Zhou,
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15
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Maladaptive Pulmonary Vascular Responses to Chronic Sustained and Chronic Intermittent Hypoxia in Rat. Antioxidants (Basel) 2021; 11:antiox11010054. [PMID: 35052557 PMCID: PMC8773044 DOI: 10.3390/antiox11010054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/21/2021] [Accepted: 12/23/2021] [Indexed: 12/13/2022] Open
Abstract
Chronic sustained hypoxia (CSH), as found in individuals living at a high altitude or in patients suffering respiratory disorders, initiates physiological adaptations such as carotid body stimulation to maintain oxygen levels, but has deleterious effects such as pulmonary hypertension (PH). Obstructive sleep apnea (OSA), a respiratory disorder of increasing prevalence, is characterized by a situation of chronic intermittent hypoxia (CIH). OSA is associated with the development of systemic hypertension and cardiovascular pathologies, due to carotid body and sympathetic overactivation. There is growing evidence that CIH can also compromise the pulmonary circulation, causing pulmonary hypertension in OSA patients and animal models. The aim of this work was to compare hemodynamics, vascular contractility, and L-arginine-NO metabolism in two models of PH in rats, associated with CSH and CIH exposure. We demonstrate that whereas CSH and CIH cause several common effects such as an increased hematocrit, weight loss, and an increase in pulmonary artery pressure (PAP), compared to CIH, CSH seems to have more of an effect on the pulmonary circulation, whereas the effects of CIH are apparently more targeted on the systemic circulation. The results suggest that the endothelial dysfunction evident in pulmonary arteries with both hypoxia protocols are not due to an increase in methylated arginines in these arteries, although an increase in plasma SDMA could contribute to the apparent loss of basal NO-dependent vasodilation and, therefore, the increase in PAP that results from CIH.
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16
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Cannon Homaei S, Barone H, Kleppe R, Betari N, Reif A, Haavik J. ADHD symptoms in neurometabolic diseases: Underlying mechanisms and clinical implications. Neurosci Biobehav Rev 2021; 132:838-856. [PMID: 34774900 DOI: 10.1016/j.neubiorev.2021.11.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 11/09/2021] [Accepted: 11/09/2021] [Indexed: 12/16/2022]
Abstract
Neurometabolic diseases (NMDs) are typically caused by genetic abnormalities affecting enzyme functions, which in turn interfere with normal development and activity of the nervous system. Although the individual disorders are rare, NMDs are collectively relatively common and often lead to lifelong difficulties and high societal costs. Neuropsychiatric manifestations, including ADHD symptoms, are prominent in many NMDs, also when the primary biochemical defect originates in cells and tissues outside the nervous system. ADHD symptoms have been described in phenylketonuria, tyrosinemias, alkaptonuria, succinic semialdehyde dehydrogenase deficiency, X-linked ichthyosis, maple syrup urine disease, and several mitochondrial disorders, but are probably present in many other NMDs and may pose diagnostic and therapeutic challenges. Here we review current literature linking NMDs with ADHD symptoms. We cite emerging evidence that many NMDs converge on common neurochemical mechanisms that interfere with monoamine neurotransmitter synthesis, transport, metabolism, or receptor functions, mechanisms that are also considered central in ADHD pathophysiology and treatment. Finally, we discuss the therapeutic implications of these findings and propose a path forward to increase our understanding of these relationships.
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Affiliation(s)
- Selina Cannon Homaei
- Division of Psychiatry, Haukeland University Hospital, Norway; Department of Biomedicine, University of Bergen, Norway.
| | - Helene Barone
- Regional Resource Center for Autism, ADHD, Tourette Syndrome and Narcolepsy, Western Norway, Division of Psychiatry, Haukeland University Hospital, Norway.
| | - Rune Kleppe
- Division of Psychiatry, Haukeland University Hospital, Norway; Norwegian Centre for Maritime and Diving Medicine, Department of Occupational Medicine, Haukeland University Hospital, Norway.
| | - Nibal Betari
- Department of Biomedicine, University of Bergen, Norway.
| | - Andreas Reif
- Department of Psychiatry, Psychosomatic Medicine and Psychotherapy, University Hospital Frankfurt, Frankfurt am Main, Germany.
| | - Jan Haavik
- Division of Psychiatry, Haukeland University Hospital, Norway; Department of Biomedicine, University of Bergen, Norway.
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17
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Faramarzi E, Aftabi Y, Ansarin K, Somi MH, Gilani N, Seyedrezazadeh E. Polymorphism (-499C/G) in DDAH2 promoter may act as a protective factor for metabolic syndrome: A case-control study in Azar-Cohort population. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2021; 65:443-449. [PMID: 34283907 PMCID: PMC10522192 DOI: 10.20945/2359-3997000000391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 03/14/2021] [Indexed: 11/23/2022]
Abstract
OBJECTIVE Globally developing metabolic syndrome (MetS) prevalence as a major health problem can be related to multiple factors of genetic and environmental. Dimethylaminohydrolase 2 (DDAH2) is the main enzyme implicated in the cardiovascular system, which regulates the nitric oxide pathway. This study investigated the association of DDAH2 polymorphism -499C/G (rs805305) with the risk of MetS among the Azar-Cohort population. METHODS The occurrence of SNP rs805305 in the DDAH2 gene was tested using the PCR-RFLP method in 332 MetS cases and 294 healthy controls. Afterward, the association of the allele and genotypes with the risk of MetS and its components were examined. RESULTS The G allele and GC genotype were significantly associated with a reduced risk of MetS (P ≤ 0.001). Also, the dominant genetic model (GG+GC) significantly decreased the risk of MetS (P = 0.001), however, in sex subtypes MetS risk was significantly reduced in males before and in females after adjustment for age (P ≤ 0.02). CONCLUSION The -499C/G polymorphism of DDAH2 may play a protective role and reduce MetS risk among the Azar-Cohort population.
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Affiliation(s)
- Elnaz Faramarzi
- Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Younes Aftabi
- Tuberculosis and Lung Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Khalil Ansarin
- Tuberculosis and Lung Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Hossein Somi
- Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Neda Gilani
- Department of Statistics and Epidemiology, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ensiyeh Seyedrezazadeh
- Tuberculosis and Lung Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran,
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18
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Taniguchi A, Tsuge M, Miyahara N, Tsukahara H. Reactive Oxygen Species and Antioxidative Defense in Chronic Obstructive Pulmonary Disease. Antioxidants (Basel) 2021; 10:antiox10101537. [PMID: 34679673 PMCID: PMC8533053 DOI: 10.3390/antiox10101537] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/23/2021] [Accepted: 09/24/2021] [Indexed: 02/06/2023] Open
Abstract
The respiratory system is continuously exposed to endogenous and exogenous oxidants. Chronic obstructive pulmonary disease (COPD) is characterized by chronic inflammation of the airways, leading to the destruction of lung parenchyma (emphysema) and declining pulmonary function. It is increasingly obvious that reactive oxygen species (ROS) and reactive nitrogen species (RNS) contribute to the progression and amplification of the inflammatory responses related to this disease. First, we described the association between cigarette smoking, the most representative exogenous oxidant, and COPD and then presented the multiple pathophysiological aspects of ROS and antioxidative defense systems in the development and progression of COPD. Second, the relationship between nitric oxide system (endothelial) dysfunction and oxidative stress has been discussed. Third, we have provided data on the use of these biomarkers in the pathogenetic mechanisms involved in COPD and its progression and presented an overview of oxidative stress biomarkers having clinical applications in respiratory medicine, including those in exhaled breath, as per recent observations. Finally, we explained the findings of recent clinical and experimental studies evaluating the efficacy of antioxidative interventions for COPD. Future breakthroughs in antioxidative therapy may provide a promising therapeutic strategy for the prevention and treatment of COPD.
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Affiliation(s)
- Akihiko Taniguchi
- Department of Hematology, Oncology, Allergy and Respiratory Medicine, Okayama University Academic Field of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama 700-8558, Japan;
| | - Mitsuru Tsuge
- Department of Pediatrics, Okayama University Academic Field of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama 700-8558, Japan;
| | - Nobuaki Miyahara
- Department of Medical Technology, Okayama University Academic Field of Health Sciences, Okayama 700-8558, Japan;
| | - Hirokazu Tsukahara
- Department of Pediatrics, Okayama University Academic Field of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama 700-8558, Japan;
- Correspondence:
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19
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Asymmetric Dimethylarginine (ADMA) in Pediatric Renal Diseases: From Pathophysiological Phenomenon to Clinical Biomarker and Beyond. CHILDREN-BASEL 2021; 8:children8100837. [PMID: 34682102 PMCID: PMC8535118 DOI: 10.3390/children8100837] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/20/2021] [Accepted: 09/21/2021] [Indexed: 12/11/2022]
Abstract
Asymmetric dimethylarginine (ADMA), an endogenous nitric oxide (NO) synthase inhibitor, inhibits NO synthesis and contributes to the pathogenesis of many human diseases. In adults, ADMA has been identified as a biomarker for chronic kidney disease (CKD) progression and cardiovascular risk. However, little attention is given to translating the adult experience into the pediatric clinical setting. In the current review, we summarize circulating and urinary ADMA reported thus far in clinical studies relating to kidney disease in children and adolescents, as well as systematize the knowledge on pathophysiological role of ADMA in the kidneys. The aim of this review is also to show the various analytical methods for measuring ADMA and the issues tht need to be addressed before transforming to clinical practice in pediatric medicine. The last task is to suggest that ADMA may not only be suitable as a diagnostic or prognostic biomarker, but also a promising therapeutic strategy to treat pediatric kidney disease in the future.
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20
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Mokhaneli MC, Botha-Le Roux S, Fourie CMT, Böger R, Schwedhelm E, Mels CMC. L-homoarginine is associated with decreased cardiovascular- and all-cause mortality. Eur J Clin Invest 2021; 51:e13472. [PMID: 33320332 DOI: 10.1111/eci.13472] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 12/10/2020] [Accepted: 12/10/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND Increasing evidence suggests that L-homoarginine, an endogenous analogue of the amino acid L-arginine, may have beneficial effects on vascular homeostasis. We examined whether L-homoarginine is associated with 10-year risk of all-cause and cardiovascular mortality in a black South African population. METHODS We included 669 black South African participants (mean age 59.5 years), 143 of whom died during the 10-year follow-up period. Mortality data were acquired via verbal autopsy. Plasma L-homoarginine (and other related markers) were analysed with liquid chromatography-tandem mass spectrometry. RESULTS Survivors had higher L-homoarginine levels compared with nonsurvivors (1.25 µM vs. 0.89 µM; P < .001). Multivariable Cox regression analyses revealed that higher plasma L-homoarginine predicted a reduction in 10-year cardiovascular (hazard ratio [HR] per SD increment, 0.61; 95% CI 0.50 to 0.75) and all-cause (hazard ratio [HR] per SD increment, 0.59; 95% CI 0.41 to 0.84) mortality risk. CONCLUSION Higher L-homoarginine levels are associated with reduced risk of 10-year cardiovascular and all-cause mortality. Regulation of L-homoarginine levels as a therapeutic target in the management of cardiovascular disease should be investigated.
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Affiliation(s)
- Maserame Cleopatra Mokhaneli
- Faculty of Health Sciences, Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa
| | - Shani Botha-Le Roux
- Faculty of Health Sciences, Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa.,MRC Research Unit for Hypertension and Cardiovascular Disease, North-West University, Potchefstroom, South Africa
| | - Carla Maria Theresia Fourie
- Faculty of Health Sciences, Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa.,MRC Research Unit for Hypertension and Cardiovascular Disease, North-West University, Potchefstroom, South Africa
| | - Rainer Böger
- Department of Clinical Pharmacology and Toxicology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Deutsches Zentrum fuer Herz-Kreislauf-Forschung E.V. (DZHK), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany
| | - Edzard Schwedhelm
- Department of Clinical Pharmacology and Toxicology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Deutsches Zentrum fuer Herz-Kreislauf-Forschung E.V. (DZHK), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany
| | - Catharina Martha Cornelia Mels
- Faculty of Health Sciences, Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa.,MRC Research Unit for Hypertension and Cardiovascular Disease, North-West University, Potchefstroom, South Africa
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21
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Yoshikawa T, Obayashi K, Miyata K, Saeki K, Ogata N. Association Between the Asymmetric Dimethylarginine Levels and Glaucoma Severity: A Cross-Sectional Analysis of the LIGHT Study. Invest Ophthalmol Vis Sci 2021; 62:7. [PMID: 33821880 PMCID: PMC8039475 DOI: 10.1167/iovs.62.4.7] [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] [Indexed: 11/24/2022] Open
Abstract
Purpose Asymmetric dimethylarginine (ADMA), a potent endogenous inhibitor of nitric oxide synthase, may be involved in the pathophysiology of glaucoma by dysfunctioning nitric oxide and oxidative stress. The purpose of this study was to determine whether the serum ADMA level is associated with the severity of glaucoma. Methods One hundred twenty-five patients with glaucoma (mean age 69.4 years) were analyzed in this cross-sectional study. The severity of glaucoma was determined by the visual field mean deviation in the worse eye; severe, a mean deviation ≤ -12 dB; and mild, a mean deviation > -12 dB. The serum ADMA levels were classified into three groups according to tertiles; low (T1), intermediate (T2), and high group (T3). Results The mean serum ADMA levels in the severe glaucoma group was significantly higher than that in the mild glaucoma group (0.41 vs. 0.39 µmol/L; P = 0.031). A significantly higher prevalence of patients with severe glaucoma was found in the T3 group than that in the T1 group (T1, 44.7% and T3, 68.2%; P = 0.018). In the multivariable logistic regression analysis adjusted for the potential confounders, e.g., age, sex, obesity, smoking, hypertension, diabetes, and renal function, the odds ratio for severe glaucoma in the T3 group was significantly higher than that in the T1 group (odds ratio 3.02; 95% confidence interval 1.04 to 8.79; P = 0.043). Conclusions A significant association between higher serum ADMA levels and severe glaucoma was found, and this association remained significant after adjusting for the potential confounders.
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Affiliation(s)
- Tadanobu Yoshikawa
- Department of Ophthalmology, Nara Medical University School of Medicine, Nara, Japan
| | - Kenji Obayashi
- Department of Epidemiology, Nara Medical University School of Medicine, Nara, Japan
| | - Kimie Miyata
- Department of Ophthalmology, Nara Medical University School of Medicine, Nara, Japan
| | - Keigo Saeki
- Department of Epidemiology, Nara Medical University School of Medicine, Nara, Japan
| | - Nahoko Ogata
- Department of Ophthalmology, Nara Medical University School of Medicine, Nara, Japan
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Bahadoran Z, Mirmiran P, Kashfi K, Ghasemi A. Endogenous flux of nitric oxide: Citrulline is preferred to Arginine. Acta Physiol (Oxf) 2021; 231:e13572. [PMID: 33089645 DOI: 10.1111/apha.13572] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 09/09/2020] [Accepted: 10/17/2020] [Indexed: 02/06/2023]
Abstract
Both arginine (Arg) and its precursor citrulline (Cit) have received much interest in the past two decades because of their potential effects on whole-body nitric oxide (NO) production and augmentation of NO-dependent signalling pathways. However, the usefulness of Arg supplementation for NO production is questionable because of its high splanchnic first pass metabolism (FPM), which limits its systemic availability. Both hepatic- and extrahepatic arginases critically limit the availability of Arg for the NO synthase enzymes (NOSs) and therefore, a limited amount of oral Arg can reach the systemic circulation for NO synthesis. Arg also has some undesired effects including induction of arginase activity, an increase of urea levels, a decrease of cellular uptake of Cit and decrease of recycling of Arg from Cit. In contrast, Cit has more availability as an NO precursor because of its high intestinal absorption, low FPM and high renal reabsorption. At the cellular level, co-localization of Cit transport systems and the enzymes involved in the Cit-Arg-NO pathway facilitates channelling of Cit into NO. Furthermore, cells preferably use Cit rather than either intra- or extracellular Arg to improve NO output, especially in high-demand situations. In conclusion, available evidence strongly supports the concept that Cit leads to higher NO production and suggests that Cit may have a better therapeutic effect than Arg for NO-disrupted conditions.
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Affiliation(s)
- Zahra Bahadoran
- Nutrition and Endocrine Research Center Research Institute for Endocrine SciencesShahid Beheshti University of Medical Sciences Tehran Iran
| | - Parvin Mirmiran
- Department of Clinical Nutrition and Human Dietetics Faculty of Nutrition Sciences and Food Technology National Nutrition and Food Technology Research InstituteShahid Beheshti University of Medical Sciences Tehran Iran
| | - Khosrow Kashfi
- Department of Molecular, Cellular and Biomedical Sciences Sophie Davis School of Biomedical Education City University of New York School of Medicine New York NY USA
| | - Asghar Ghasemi
- Endocrine Physiology Research Center Research Institute for Endocrine SciencesShahid Beheshti University of Medical Sciences Tehran Iran
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Ertelt A, Stumpff F, Merle R, Kuban S, Bollinger L, Liertz S, Gehlen H. Asymmetric dimethylarginine-A potential cardiac biomarker in horses. J Vet Cardiol 2020; 33:43-51. [PMID: 33360109 DOI: 10.1016/j.jvc.2020.11.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 11/06/2020] [Accepted: 11/17/2020] [Indexed: 12/22/2022]
Abstract
INTRODUCTION/OBJECTIVES Asymmetric dimethylarginine (ADMA) is a cardiac biomarker in humans, symmetric dimethylarginine (SDMA) a renal biomarker in humans, cats, and dogs. The purpose of this prospective study was to investigate if measuring serum ADMA and SDMA concentrations via ELISA allows detection of cardiac disease in horses in a routine laboratory setting. In this context, reference values in horses were established. ANIMALS, MATERIALS, AND METHODS Seventy-eight horses with no known medical history were compared to 23 horses with confirmed structural cardiac disease with/or without arrhythmias. Horses underwent physical examination, electrocardiography, echocardiography and venous blood sampling and were staged based on the severity of cardiac disease from 0 to II. Asymmetric dimethylarginine and SDMA were measured via ELISA and crosschecked using liquid chromatograph triple quadrupole mass spectrometry. Reference intervals with 90th percent confidence intervals were evaluated and standard software was used to test for significant differences in ADMA, SDMA, and the l-arginine/ADMA ratio between groups. RESULTS The reference ranges were 1.7-3.8 μmol/L and 0.3-0.8 μmol/L for ADMA and SDMA, respectively. Serum ADMA was higher in horses with heart disease compared to healthy horses (p < 0.01) and highest in horses with stage II heart disease (p = 0.02). The l-Arginine/ADMA ratio was significantly higher in healthy animals than those with cardiac disease (p = 0.001). CONCLUSIONS Reference values for serum ADMA and SDMA using ELISA methods are presented in horses. This study confirms the association between heart disease and increased serum ADMA concentration as well as a decreased l-Arginine/ADMA ratio in horses.
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Affiliation(s)
- A Ertelt
- Equine Clinic, Internal Medicine, Freie Universitaet Berlin, Oertzenweg 19b, 14193, Berlin, Germany.
| | - F Stumpff
- Institute of Veterinary Physiology, Freie Universitaet Berlin, Oertzenweg 19b, 14163, Berlin, Germany
| | - R Merle
- Institute for Veterinary Epidemiology and Biostatistics, Freie Universitaet Berlin, Koenigsweg 67, 14163, Berlin, Germany
| | - S Kuban
- Equine Clinic, Internal Medicine, Freie Universitaet Berlin, Oertzenweg 19b, 14193, Berlin, Germany
| | - L Bollinger
- Equine Clinic, Internal Medicine, Freie Universitaet Berlin, Oertzenweg 19b, 14193, Berlin, Germany
| | - S Liertz
- Equine Clinic, Internal Medicine, Freie Universitaet Berlin, Oertzenweg 19b, 14193, Berlin, Germany
| | - H Gehlen
- Equine Clinic, Internal Medicine, Freie Universitaet Berlin, Oertzenweg 19b, 14193, Berlin, Germany
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Garbincius JF, Merz LE, Cuttitta AJ, Bayne KV, Schrade S, Armstead EA, Converso-Baran KL, Whitesall SE, D'Alecy LG, Michele DE. Enhanced dimethylarginine degradation improves coronary flow reserve and exercise tolerance in Duchenne muscular dystrophy carrier mice. Am J Physiol Heart Circ Physiol 2020; 319:H582-H603. [PMID: 32762558 DOI: 10.1152/ajpheart.00333.2019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Duchenne muscular dystrophy (DMD) is an X-linked disease caused by null mutations in dystrophin and characterized by muscle degeneration. Cardiomyopathy is common and often prevalent at similar frequency in female DMD carriers irrespective of whether they manifest skeletal muscle disease. Impaired muscle nitric oxide (NO) production in DMD disrupts muscle blood flow regulation and exaggerates postexercise fatigue. We show that circulating levels of endogenous methylated arginines including asymmetric dimethylarginine (ADMA), which act as NO synthase inhibitors, are elevated by acute necrotic muscle damage and in chronically necrotic dystrophin-deficient mice. We therefore hypothesized that excessive ADMA impairs muscle NO production and diminishes exercise tolerance in DMD. We used transgenic expression of dimethylarginine dimethylaminohydrolase 1 (DDAH), which degrades methylated arginines, to investigate their contribution to exercise-induced fatigue in DMD. Although infusion of exogenous ADMA was sufficient to impair exercise performance in wild-type mice, transgenic DDAH expression did not rescue exercise-induced fatigue in dystrophin-deficient male mdx mice. Surprisingly, DDAH transgene expression did attenuate exercise-induced fatigue in dystrophin-heterozygous female mdx carrier mice. Improved exercise tolerance was associated with reduced heart weight and improved cardiac β-adrenergic responsiveness in DDAH-transgenic mdx carriers. We conclude that DDAH overexpression increases exercise tolerance in female DMD carriers, possibly by limiting cardiac pathology and preserving the heart's responses to changes in physiological demand. Methylated arginine metabolism may be a new target to improve exercise tolerance and cardiac function in DMD carriers or act as an adjuvant to promote NO signaling alongside therapies that partially restore dystrophin expression in patients with DMD.NEW & NOTEWORTHY Duchenne muscular dystrophy (DMD) carriers are at risk for cardiomyopathy. The nitric oxide synthase inhibitor asymmetric dimethylarginine (ADMA) is released from damaged muscle in DMD and impairs exercise performance. Transgenic expression of dimethylarginine dimethylaminohydrolase to degrade ADMA prevents cardiac hypertrophy, improves cardiac function, and improves exercise tolerance in DMD carrier mice. These findings highlight the relevance of ADMA to muscular dystrophy and have important implications for therapies targeting nitric oxide in patients with DMD and DMD carriers.
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Affiliation(s)
- Joanne F Garbincius
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan
| | - Lauren E Merz
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan
| | - Ashley J Cuttitta
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan
| | - Kaitlynn V Bayne
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan
| | - Sara Schrade
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan
| | - Emily A Armstead
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan
| | | | - Steven E Whitesall
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan.,Physiology Phenotyping Core, University of Michigan, Ann Arbor, Michigan
| | - Louis G D'Alecy
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan.,Physiology Phenotyping Core, University of Michigan, Ann Arbor, Michigan
| | - Daniel E Michele
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan.,Physiology Phenotyping Core, University of Michigan, Ann Arbor, Michigan.,Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
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New Oxidative Stress Markers Useful in the Diagnosis of Acute Appendicitis in Children: Thiol/Disulfide Homeostasis and the Asymmetric Dimethylarginine Level. Pediatr Emerg Care 2020; 36:362-367. [PMID: 29135899 DOI: 10.1097/pec.0000000000001339] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
OBJECTIVES The aim of this study was to evaluate 2 new oxidative stress markers, thiol/disulfide homeostasis status and the asymmetric dimethylarginine (ADMA) level, in children with acute appendicitis (AA) and to evaluate their diagnostic utility. METHODS This case-control study included 45 patients with AA and 35 healthy children. Age, sex, white blood cell count, neutrophil-to-lymphocyte ratio, high-sensitivity C-reactive protein (hs-CRP) level, ultrasonographic findings, thiol/disulfide homeostasis parameters (native and total thiol levels, native thiol/total thiol ratios [antioxidant parameters], and disulfide, disulfide/native thiol, and disulfide/total thiol ratios [oxidant parameters]), and the ADMA level were compared between the 2 groups. RESULTS The native and total thiol levels, and the native thiol/total thiol ratio, were significantly lower, and the disulfide level and disulfide/native thiol and disulfide/total thiol ratios significantly higher, in the AA compared with the control group (all P < 0.001). The ADMA level was significantly higher in a perforated versus nonperforated subgroup of AA patients, but the thiol/disulfide homeostasis parameters did not differ significantly between the two subgroups. In addition, the hs-CRP level and appendiceal wall thickness were higher in the perforated subgroup. The thiol/disulfide antioxidant parameters and ADMA level correlated negatively with the white blood cell count, the neutrophil-to-lymphocyte ratio, and the hs-CRP level, in the AA group, but correlated positively with oxidant parameters. The sensitivity and specificity of the disulfide/native thiol and disulfide/total thiol ratios were high when used to diagnose AA, whereas the sensitivity of the ADMA level was high when used to diagnose perforated appendicitis. CONCLUSIONS Thiol/disulfide homeostasis and the ADMA level, together with certain other parameters, may be useful biomarkers of AA in children.
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Ansermet C, Centeno G, Lagarrigue S, Nikolaeva S, Yoshihara HA, Pradervand S, Barras J, Dattner N, Rotman S, Amati F, Firsov D. Renal tubular arginase-2 participates in the formation of the corticomedullary urea gradient and attenuates kidney damage in ischemia-reperfusion injury in mice. Acta Physiol (Oxf) 2020; 229:e13457. [PMID: 32072766 DOI: 10.1111/apha.13457] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 02/17/2020] [Accepted: 02/18/2020] [Indexed: 12/13/2022]
Abstract
AIM Arginase 2 (ARG2) is a mitochondrial enzyme that catalyses hydrolysis of l-arginine into urea and l-ornithine. In the kidney, ARG2 is localized to the S3 segment of the proximal tubule. It has been shown that expression and activity of this enzyme are upregulated in a variety of renal pathologies, including ischemia-reperfusion (IR) injury. However, the (patho)physiological role of ARG2 in the renal tubule remains largely unknown. METHODS We addressed this question in mice with conditional knockout of Arg2 in renal tubular cells (Arg2lox/lox /Pax8-rtTA/LC1 or, cKO mice). RESULTS We demonstrate that cKO mice exhibit impaired urea concentration and osmolality gradients along the corticomedullary axis. In a model of unilateral ischemia-reperfusion injury (UIRI) with an intact contralateral kidney, ischemia followed by 24 hours of reperfusion resulted in significantly more pronounced histological damage in ischemic kidneys from cKO mice compared to control and sham-operated mice. In parallel, UIRI-subjected cKO mice exhibited a broad range of renal functional abnormalities, including albuminuria and aminoaciduria. Fourteen days after UIRI, the cKO mice exhibited complex phenotype characterized by significantly lower body weight, increased plasma levels of early predictive markers of kidney disease progression (asymmetric dimethylarginine and symmetric dimethylarginine), impaired mitochondrial function in the ischemic kidney but no difference in kidney fibrosis as compared to control mice. CONCLUSION Collectively, these results establish the role of ARG2 in the formation of corticomedullary urea and osmolality gradients and suggest that this enzyme attenuates kidney damage in ischemia-reperfusion injury.
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Affiliation(s)
- Camille Ansermet
- Department of Pharmacology and Toxicology University of Lausanne Lausanne Switzerland
| | - Gabriel Centeno
- Department of Pharmacology and Toxicology University of Lausanne Lausanne Switzerland
| | - Sylviane Lagarrigue
- Department of Physiology & Institute of Sport Sciences University of Lausanne Lausanne Switzerland
| | - Svetlana Nikolaeva
- Department of Pharmacology and Toxicology University of Lausanne Lausanne Switzerland
- Institute of Evolutionary Physiology and Biochemistry St‐Petersburg Russia
| | - Hikari A. Yoshihara
- Institute of Physics Ecole Polytechnique Fédérale de Lausanne Lausanne Switzerland
| | - Sylvain Pradervand
- Genomic Technologies Facility University of Lausanne Lausanne Switzerland
| | - Jean‐Luc Barras
- Service of Clinical Pathology Lausanne University Hospital Institute of Pathology Lausanne Switzerland
| | - Nicolas Dattner
- Service of Clinical Pathology Lausanne University Hospital Institute of Pathology Lausanne Switzerland
| | - Samuel Rotman
- Service of Clinical Pathology Lausanne University Hospital Institute of Pathology Lausanne Switzerland
| | - Francesca Amati
- Department of Physiology & Institute of Sport Sciences University of Lausanne Lausanne Switzerland
| | - Dmitri Firsov
- Department of Pharmacology and Toxicology University of Lausanne Lausanne Switzerland
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27
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Sgarra L, Bortone AS, Potenza MA, Nacci C, De Salvia MA, Acquaviva T, De Cillis E, Ciccone MM, Grimaldi M, Montagnani M. Endothelial Dysfunction May Link Interatrial Septal Abnormalities and MTHFR-Inherited Defects to Cryptogenic Stroke Predisposition. Biomolecules 2020; 10:biom10060861. [PMID: 32512924 PMCID: PMC7355772 DOI: 10.3390/biom10060861] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 05/22/2020] [Accepted: 06/02/2020] [Indexed: 12/21/2022] Open
Abstract
We explored the significance of the L-Arginine/asymmetric dimethylarginine (L-Arg/ADMA) ratio as a biomarker of endothelial dysfunction in stroke patients. To this aim, we evaluated the correlation, in terms of severity, between the degree of endothelial dysfunction (by L-Arg/ADMA ratio), the methylene tetrahydrofolate reductase (MTHFR) genotype, and the interatrial septum (IAS) phenotype in subject with a history of stroke. Methods and Results: L-Arg, ADMA, and MTHFR genotypes were evaluated; the IAS phenotype was assessed by transesophageal echocardiography. Patients were grouped according to the severity of IAS defects and the residual enzymatic activity of MTHFR-mutated variants, and values of L-Arg/ADMA ratio were measured in each subgroup. Of 57 patients, 10 had a septum integrum (SI), 38 a patent foramen ovale (PFO), and 9 an ostium secundum (OS). The L-Arg/ADMA ratio differed across septum phenotypes (p ≤ 0.01), and was higher in SI than in PFO or OS patients (p ≤ 0.05, p ≤ 0.01, respectively). In the PFO subgroup a negative correlation was found between the L-Arg/ADMA ratio and PFO tunnel length/height ratio (p ≤ 0.05; r = − 0.37; R2 = 0.14). Interestingly, the L-Arg/ADMA ratio varied across MTHFR genotypes (p ≤ 0.0001) and was lower in subgroups carrying the most impaired enzyme with respect to patients carrying the conservative MTHFR (p ≤ 0.0001, p ≤ 0.05, respectively). Consistently, OS patients carried the most dysfunctional MTHFR genotypes, whereas SI patients the least ones. Conclusions: A low L-Arg/ADMA ratio correlates with impaired activity of MTHFR and with the jeopardized IAS phenotype along a severity spectrum encompassing OS, PFO with long/tight tunnel, PFO with short/large tunnel, and SI. This infers that genetic MTHFR defects may underlie endothelial dysfunction-related IAS abnormalities, and predispose to a cryptogenic stroke. Our findings emphasize the role of the L-Arg/ADMA ratio as a reliable marker of stroke susceptibility in carriers of IAS abnormalities, and suggest its potential use both as a diagnostic tool and as a decision aid for therapy.
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Affiliation(s)
- Luca Sgarra
- Department of Biomedical Sciences and Human Oncology—Section of Pharmacology, Medical School, University of Bari “Aldo Moro”, 70124 Bari, Italy; (L.S.); (M.A.P.); (C.N.); (M.A.D.S.)
| | - Alessandro Santo Bortone
- Department of Emergency and Organ Transplantation—Section of Cardiovascular Diseases, Medical School, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.S.B.); (T.A.); (E.D.C.); (M.M.C.)
| | - Maria Assunta Potenza
- Department of Biomedical Sciences and Human Oncology—Section of Pharmacology, Medical School, University of Bari “Aldo Moro”, 70124 Bari, Italy; (L.S.); (M.A.P.); (C.N.); (M.A.D.S.)
| | - Carmela Nacci
- Department of Biomedical Sciences and Human Oncology—Section of Pharmacology, Medical School, University of Bari “Aldo Moro”, 70124 Bari, Italy; (L.S.); (M.A.P.); (C.N.); (M.A.D.S.)
| | - Maria Antonietta De Salvia
- Department of Biomedical Sciences and Human Oncology—Section of Pharmacology, Medical School, University of Bari “Aldo Moro”, 70124 Bari, Italy; (L.S.); (M.A.P.); (C.N.); (M.A.D.S.)
| | - Tommaso Acquaviva
- Department of Emergency and Organ Transplantation—Section of Cardiovascular Diseases, Medical School, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.S.B.); (T.A.); (E.D.C.); (M.M.C.)
| | - Emanuela De Cillis
- Department of Emergency and Organ Transplantation—Section of Cardiovascular Diseases, Medical School, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.S.B.); (T.A.); (E.D.C.); (M.M.C.)
| | - Marco Matteo Ciccone
- Department of Emergency and Organ Transplantation—Section of Cardiovascular Diseases, Medical School, University of Bari “Aldo Moro”, 70124 Bari, Italy; (A.S.B.); (T.A.); (E.D.C.); (M.M.C.)
| | - Massimo Grimaldi
- General Hospital “F. Miulli” Acquaviva delle Fonti, 70021 Bari, Italy;
| | - Monica Montagnani
- Department of Biomedical Sciences and Human Oncology—Section of Pharmacology, Medical School, University of Bari “Aldo Moro”, 70124 Bari, Italy; (L.S.); (M.A.P.); (C.N.); (M.A.D.S.)
- Correspondence:
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Pre-Analytical and Clinical Validation of a Dried Blood Spot Assay for Asymmetric Dimethylarginine and L-Arginine. J Clin Med 2020; 9:jcm9041072. [PMID: 32283799 PMCID: PMC7230730 DOI: 10.3390/jcm9041072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/07/2020] [Accepted: 04/08/2020] [Indexed: 02/07/2023] Open
Abstract
Asymmetric dimethylarginine (ADMA) inhibits nitric oxide (NO) synthesis. It is a risk marker for cardiovascular events and mortality in patients with cardiometabolic diseases and in population-based studies. Plasma or serum analysis of ADMA may be hampered by pre-analytical sample handling. We validated a dried blood spot (DBS) assay for ADMA and L-arginine and show here that this assay has excellent variabilities and reproducibilities. Filter paper is impregnated with the arginase inhibitor nor-NOHA (Nω-hydroxy-nor-Arginine) to avoid L-arginine degradation. Clinical validation of this DBS assay confirms elevated ADMA concentration in hemodialysis patients as compared to healthy controls, higher ADMA concentrations in men versus women, and elevated L-arginine concentration in subjects supplemented with L-arginine. The DBS assay was used in a cohort study involving 100 primarily healthy subjects in the Andean region to assess the impact of chronic intermittent hypoxia on ADMA and L-arginine; ADMA DBS concentration at sea level was prospectively associated with pulmonary hypertension after six months of exposure to 3500 m. In a cohort of 753 individuals, L-arginine/ADMA ratio significantly decreased with increasing number of traditional cardiovascular risk factors. Analysis of ADMA and L-arginine in DBS is a reliable and reproducible method for quantitation of these markers in field studies.
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Fulton MD, Brown T, Zheng YG. The Biological Axis of Protein Arginine Methylation and Asymmetric Dimethylarginine. Int J Mol Sci 2019; 20:ijms20133322. [PMID: 31284549 PMCID: PMC6651691 DOI: 10.3390/ijms20133322] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 07/04/2019] [Accepted: 07/04/2019] [Indexed: 12/20/2022] Open
Abstract
Protein post-translational modifications (PTMs) in eukaryotic cells play important roles in the regulation of functionalities of the proteome and in the tempo-spatial control of cellular processes. Most PTMs enact their regulatory functions by affecting the biochemical properties of substrate proteins such as altering structural conformation, protein-protein interaction, and protein-nucleic acid interaction. Amid various PTMs, arginine methylation is widespread in all eukaryotic organisms, from yeasts to humans. Arginine methylation in many situations can drastically or subtly affect the interactions of substrate proteins with their partnering proteins or nucleic acids, thus impacting major cellular programs. Recently, arginine methylation has become an important regulator of the formation of membrane-less organelles inside cells, a phenomenon of liquid-liquid phase separation (LLPS), through altering π-cation interactions. Another unique feature of arginine methylation lies in its impact on cellular physiology through its downstream amino acid product, asymmetric dimethylarginine (ADMA). Accumulation of ADMA in cells and in the circulating bloodstream is connected with endothelial dysfunction and a variety of syndromes of cardiovascular diseases. Herein, we review the current knowledge and understanding of protein arginine methylation in regards to its canonical function in direct protein regulation, as well as the biological axis of protein arginine methylation and ADMA biology.
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Affiliation(s)
- Melody D Fulton
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, GA 30602, USA
| | - Tyler Brown
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, GA 30602, USA
| | - Y George Zheng
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, GA 30602, USA.
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Dymara-Konopka W, Laskowska M. The Role of Nitric Oxide, ADMA, and Homocysteine in The Etiopathogenesis of Preeclampsia-Review. Int J Mol Sci 2019; 20:ijms20112757. [PMID: 31195628 PMCID: PMC6600256 DOI: 10.3390/ijms20112757] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 05/27/2019] [Accepted: 05/28/2019] [Indexed: 12/18/2022] Open
Abstract
Preeclampsia is a serious, pregnancy-specific, multi-organ disease process of compound aetiology. It affects 3–6% of expecting mothers worldwide and it persists as a leading cause of maternal and foetal morbidity and mortality. In fact, hallmark features of preeclampsia (PE) result from vessel involvement and demonstrate maternal endothelium as a target tissue. Growing evidence suggests that chronic placental hypoperfusion triggers the production and release of certain agents that are responsible for endothelial activation and injury. In this review, we will present the latest findings on the role of nitric oxide, asymmetric dimethylarginine (ADMA), and homocysteine in the etiopathogenesis of preeclampsia and their possible clinical implications.
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Affiliation(s)
- Weronika Dymara-Konopka
- Department of Obstetrics and Perinatology, Medical University of Lublin, Poland, 20-950 Lublin, Jaczewskiego 8, Poland.
| | - Marzena Laskowska
- Department of Obstetrics and Perinatology, Medical University of Lublin, Poland, 20-950 Lublin, Jaczewskiego 8, Poland.
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Gkatza NA, Castro C, Harvey RF, Heiß M, Popis MC, Blanco S, Bornelöv S, Sajini AA, Gleeson JG, Griffin JL, West JA, Kellner S, Willis AE, Dietmann S, Frye M. Cytosine-5 RNA methylation links protein synthesis to cell metabolism. PLoS Biol 2019; 17:e3000297. [PMID: 31199786 PMCID: PMC6594628 DOI: 10.1371/journal.pbio.3000297] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 06/26/2019] [Accepted: 05/14/2019] [Indexed: 02/02/2023] Open
Abstract
Posttranscriptional modifications in transfer RNA (tRNA) are often critical for normal development because they adapt protein synthesis rates to a dynamically changing microenvironment. However, the precise cellular mechanisms linking the extrinsic stimulus to the intrinsic RNA modification pathways remain largely unclear. Here, we identified the cytosine-5 RNA methyltransferase NSUN2 as a sensor for external stress stimuli. Exposure to oxidative stress efficiently repressed NSUN2, causing a reduction of methylation at specific tRNA sites. Using metabolic profiling, we showed that loss of tRNA methylation captured cells in a distinct catabolic state. Mechanistically, loss of NSUN2 altered the biogenesis of tRNA-derived noncoding fragments (tRFs) in response to stress, leading to impaired regulation of protein synthesis. The intracellular accumulation of a specific subset of tRFs correlated with the dynamic repression of global protein synthesis. Finally, NSUN2-driven RNA methylation was functionally required to adapt cell cycle progression to the early stress response. In summary, we revealed that changes in tRNA methylation profiles were sufficient to specify cellular metabolic states and efficiently adapt protein synthesis rates to cell stress.
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Affiliation(s)
| | - Cecilia Castro
- Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom
| | - Robert F. Harvey
- Medical Research Council Toxicology Unit, University of Cambridge, Cambridge, United Kingdom
| | - Matthias Heiß
- Department of Chemistry, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Martyna C. Popis
- Department of Genetics, University of Cambridge, Cambridge, United Kingdom
| | - Sandra Blanco
- Cancer Cell Signaling and Metabolism Lab, Proteomics Unit CIC bioGUNE, Derio, Spain
- Molecular Mechanisms Program, Centro de Investigación del Cáncer and Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas (CSIC)-University of Salamanca, Salamanca, Spain
| | - Susanne Bornelöv
- Wellcome–Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom
| | - Abdulrahim A. Sajini
- Department of Biomedical Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Joseph G. Gleeson
- Department of Neurosciences, San Diego School of Medicine, University of California, La Jolla, California, United States of America
| | - Julian L. Griffin
- Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom
| | - James A. West
- Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom
| | - Stefanie Kellner
- Department of Chemistry, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Anne E. Willis
- Medical Research Council Toxicology Unit, University of Cambridge, Cambridge, United Kingdom
| | - Sabine Dietmann
- Wellcome–Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom
| | - Michaela Frye
- Department of Genetics, University of Cambridge, Cambridge, United Kingdom
- German Cancer Center (Deutsches Krebsforschungszntrum), Heidelberg, Germany
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Endothelial factors in the pathogenesis and treatment of chronic kidney disease Part I: General mechanisms: a joint consensus statement from the European Society of Hypertension Working Group on Endothelin and Endothelial Factors and The Japanese Society of Hypertension. J Hypertens 2019; 36:451-461. [PMID: 29120962 DOI: 10.1097/hjh.0000000000001599] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
: Kidney damage is a common consequence of arterial hypertension, but is also a cause of atherogenesis. Dysfunction and/or harm of the endothelium in glomeruli and tubular interstitium damage the function of these structures and translates into dynamic changes of filtration fraction, with progressive reduction in glomerular filtration rate, expansion of extracellular fluid volume, abnormal ion balance, and hypoxia, ultimately leading to chronic kidney disease. Considering the key role played by endothelial dysfunction in chronic kidney disease, the Working Group on Endothelin and Endothelial Factors of the European Society of Hypertension and the Japanese Society of Hypertension have critically reviewed available knowledge on the mechanisms underlying endothelial cell injury. This resulted into two articles: in the first, we herein examine the mechanisms by which endothelial factors induce vascular remodeling and the role of different players, including endothelin-1, the renin-angiotensin-aldosterone system and their interactions, and of oxidative stress; in the second, we discuss the role of endothelial dysfunction in the major disease conditions that affect the kidney.
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Zhao WC, Li G, Huang CY, Jiang JL. Asymmetric dimethylarginine: An crucial regulator in tissue fibrosis. Eur J Pharmacol 2019; 854:54-61. [PMID: 30951718 DOI: 10.1016/j.ejphar.2019.03.055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 03/21/2019] [Accepted: 03/28/2019] [Indexed: 02/06/2023]
Abstract
Fibrosis is a reparative process with very few therapeutic options to prevent its progression to organ dysfunction. Chronic fibrotic diseases contribute to an estimated 45% of all death in the industrialized world. Asymmetric dimethylarginine (ADMA), an endothelial nitric oxide synthase inhibitor, plays a crucial role in the pathogenesis of various cardiovascular diseases associated with endothelial dysfunction. Recent reports have focused on ADMA in the pathogenesis of tissue fibrosis. This review discusses the current knowledge about ADMA biology, its association with risk factors of established fibrotic diseases and the potential pathophysiological mechanisms implicating ADMA in the process of tissue fibrosis.
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Affiliation(s)
- Wei-Chen Zhao
- Department of Pharmacology, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410078, China
| | - Ge Li
- Department of Pharmacology, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410078, China; Faculty of Medical Public Courses, Xinhua College of Sun Yat-sen University, Guangzhou, Guangdong, 510520, China
| | - Chu-Yi Huang
- Department of Pharmacology, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410078, China
| | - Jun-Lin Jiang
- Department of Pharmacology, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, 410078, China; Provincial Key Laboratory of Cardiovascular Research, Central South University, Changsha, 410078, China.
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Echeverria C, Eltit F, Santibanez JF, Gatica S, Cabello-Verrugio C, Simon F. Endothelial dysfunction in pregnancy metabolic disorders. Biochim Biophys Acta Mol Basis Dis 2019; 1866:165414. [PMID: 30794867 DOI: 10.1016/j.bbadis.2019.02.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Revised: 02/03/2019] [Accepted: 02/05/2019] [Indexed: 12/19/2022]
Abstract
In recent years, the vascular endothelium has gained attention as a key player in the initiation and development of pregnancy disorders. Endothelium acts as an endocrine organ that preserves the homeostatic balance by responding to changes in metabolic status. However, in metabolic disorders, endothelial cells adopt a dysfunctional function, losing their normal responsiveness. During pregnancy, several metabolic changes occur, in which endothelial function decisively participates. Similarly, when pregnancy metabolic disorders occur, endothelial dysfunction plays a key role in pathogenesis. This review outlines the main findings regarding endothelial dysfunction in three main metabolic pathological conditions observed during pregnancy: gestational diabetes, hypertensive disorders, and obesity and hyperlipidemia. Organ, histological and cellular characteristics were thoroughly described. Also, we focused in discussing the underlying molecular mechanisms involved in the cellular signaling pathways that mediate responses in these pathological conditions.
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Affiliation(s)
- Cesar Echeverria
- Facultad de Medicina, Universidad de Atacama, Copayapu 485, 1531772 Copiapo, Chile
| | - Felipe Eltit
- Department of Materials Engineering, University of British Columbia, Vancouver, Canada; School of Biomedical Engineering, University of British Columbia, Vancouver, Canada
| | - Juan F Santibanez
- Department of Molecular Oncology, Institute for Medical Research, University of Belgrade, Belgrade, Serbia; Centro Integrativo de Biología y Química Aplicada (CIBQA), Universidad Bernardo O'Higgins, Santiago, Chile
| | - Sebastian Gatica
- Departamento de Ciencias Biologicas, Facultad de Ciencias de la Vida, Universidad Andres Bello, 8370146 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, 8331150 Santiago, Chile
| | - Claudio Cabello-Verrugio
- Departamento de Ciencias Biologicas, Facultad de Ciencias de la Vida, Universidad Andres Bello, 8370146 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, 8331150 Santiago, Chile; Center for the Development of Nanoscience and Nanotechnology (CEDENNA), Universidad de Santiago de Chile, Santiago, Chile
| | - Felipe Simon
- Departamento de Ciencias Biologicas, Facultad de Ciencias de la Vida, Universidad Andres Bello, 8370146 Santiago, Chile; Millennium Institute on Immunology and Immunotherapy, 8331150 Santiago, Chile.
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Firat PG, Demirel EE, Demirel S, Dikci S, Turkoz Y, Ozyalın F. Increased Aqueous Humor Symmetric Dimethylarginine Level in Patients with Primary Open Angle Glaucoma. Curr Eye Res 2019; 44:619-622. [PMID: 30707048 DOI: 10.1080/02713683.2019.1578378] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Purpose: To evaluate the asymmetric dimethylarginine (ADMA), symmetric dimethylarginine (SDMA) and L-arginine (L-Arg) levels both in plasma and aqueous humor of primary open angle glaucoma (POAG) patients and matched controls. Patients and Methods: 25 primary open angle glaucoma patients and 42 control cases with senile cataract were included in the study. Plasma and aqueous humor ADMA, SDMA and L-Arg levels of the participants were measured by using liquid chromatography-tandem mass spectrometry. Results: A significant increase in aqueous humor SDMA level was detected in POAG patients compared with controls (p = 0.0115). No significant difference was detected in plasma and aqueous humor ADMA, L-Arg levels. Conclusion: The aqueous humor levels of SDMA are found to be associated with POAG. The result of this current study supports the role of nitric oxide pathway in glaucoma.
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Affiliation(s)
- Penpe Gül Firat
- a Department of Ophthalmology , Inonu University School of Medicine , Malatya , Turkey
| | | | - Soner Demirel
- a Department of Ophthalmology , Inonu University School of Medicine , Malatya , Turkey
| | - Seyhan Dikci
- a Department of Ophthalmology , Inonu University School of Medicine , Malatya , Turkey
| | - Yusuf Turkoz
- c Department of Biochemistry , Inonu University School of Medicine , Malatya , Turkey
| | - Fatma Ozyalın
- c Department of Biochemistry , Inonu University School of Medicine , Malatya , Turkey
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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: 17] [Impact Index Per Article: 2.8] [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.
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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.
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Czarnecka A, Aleksandrowicz M, Jasiński K, Jaźwiec R, Kalita K, Hilgier W, Zielińska M. Cerebrovascular reactivity and cerebral perfusion of rats with acute liver failure: role of L-glutamine and asymmetric dimethylarginine in L-arginine-induced response. J Neurochem 2018; 147:692-704. [PMID: 30151828 DOI: 10.1111/jnc.14578] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 07/27/2018] [Accepted: 08/16/2018] [Indexed: 01/19/2023]
Abstract
Cerebral blood flow (CBF) is impaired in acute liver failure (ALF), however, the complexity of the underlying mechanisms has often led to inconclusive interpretations. Regulation of CBF depends at least partially on variations in the local brain L-arginine concentration and/or its metabolic rate. In ALF, other factors, like an increased concentration of asymmetric dimethylarginine (ADMA), an endogenous nitric oxide synthase inhibitor and elevated level of L-glutamine, may contribute to CBF alteration. This study demonstrated strong differences in the reactivity of the middle cerebral arteries and their response to extravascular L-arginine application between vessels isolated from rats with thioacetamide (TAA)-induced ALF and control animals. Our results also showed the decrease in the cerebral perfusion in TAA rats measured by arterial spin labeling perfusion magnetic resonance. Subsequently, we aimed to investigate the importance of balance between the concentration of ADMA and L-arginine in the CBF regulation. In vivo, intraperitoneal L-arginine administration in TAA rats corrected: (i) decrease in cerebral perfusion, (ii) decrease in brain extracellular L-arginine/ADMA ratio and (iii) increase in brain L-glutamine concentration. Our study implicates that impaired vascular tone of cerebral arteries is most likely associated with exposure to high ADMA and L-glutamine levels resulting in limited availability of L-arginine and might be responsible for reduced cerebral perfusion observed in ALF.
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Affiliation(s)
- Anna Czarnecka
- Department of Neurotoxicology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - Marta Aleksandrowicz
- Department of Neurosurgery, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - Krzysztof Jasiński
- Department of Magnetic Resonance Imaging, Institute of Nuclear Physics, Polish Academy of Sciences, Kraków, Poland
| | - Radosław Jaźwiec
- Mass Spectrometry Laboratory, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Katarzyna Kalita
- Department of Magnetic Resonance Imaging, Institute of Nuclear Physics, Polish Academy of Sciences, Kraków, Poland
| | - Wojciech Hilgier
- Department of Neurotoxicology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - Magdalena Zielińska
- Department of Neurotoxicology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
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Dovinová I, Hrabárová E, Jansen E, Kvandová M, Majzúnová M, Berenyiová A, Barančík M. ADMA, homocysteine and redox status improvement affected by 7-nitroindazole in spontaneously hypertensive rats. Biomed Pharmacother 2018; 106:1478-1483. [PMID: 30119222 DOI: 10.1016/j.biopha.2018.07.096] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 07/18/2018] [Accepted: 07/18/2018] [Indexed: 12/31/2022] Open
Abstract
Inhibition of nitric oxide (NO) production can influence blood pressure regulation and increase hypertension. Asymmetric dimethylarginine, ADMA, an analogue of L-arginine, can inhibit NO synthesis, impair endothelial function, and is a risk marker of cardiovascular diseases. Homocysteine (Hcy) level affects oxidative stress production of reactive oxygen species (ROS) in hypertension and also influences changes in signaling and cell damage. The present study was focused on experimental effects of exogenous NOS inhibitors and their effect on ADMA, an endogenous NOS inhibitor, homocysteine and ROS production measured as reactive oxidative metabolites (ROM). We compared effects of the two potential exogenous NO-inhibitors: NG-nitro L-arginine methyl ester (L-NAME) and 7-nitroindazole (7-NI). Levels of ADMA, Hcy, ROM and total thiols (TTL) were not changed in the L-NAME group. With 7-NI administration, we observed unchanged NOS activity in the left ventricle and a pronounced decrease of ADMA and Hcy levels, accompanied by ROM over-production in plasma. TTL/ROM ratio was more favorable than in the L-NAME group. We observed that 7-NI, an exogenous NOinhibitor, can decrease and improve the levels of ADMA, Hcy, and ROM, and increase TTL/ROM ratio in the plasma of spontaneously hypertensive rats.
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Affiliation(s)
- Ima Dovinová
- Center of Experimental Medicine - Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, Sienkiewiczova 1, 81371 Bratislava, Slovak Republic; Faculty of Health Sciences and Social Work, Trnava University, Univerzitné námestie 1, 918 43 Trnava, Slovak Republic.
| | - Eva Hrabárová
- Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 84538 Bratislava, Slovak Republic
| | - Eugene Jansen
- Center for Health Protection, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | - Miroslava Kvandová
- Center of Experimental Medicine - Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, Sienkiewiczova 1, 81371 Bratislava, Slovak Republic
| | - Miroslava Majzúnová
- Center of Experimental Medicine - Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, Sienkiewiczova 1, 81371 Bratislava, Slovak Republic
| | - Andrea Berenyiová
- Center of Experimental Medicine - Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, Sienkiewiczova 1, 81371 Bratislava, Slovak Republic
| | - Miroslav Barančík
- Center of Experimental Medicine - Institute for Heart Research, Slovak Academy of Sciences, Dúbravská cesta 9, 84104 Bratislava, Slovak Republic.
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Chandra D, Poole JA, Bailey KL, Staab E, Sweeter JM, DeVasure JM, Romberger DJ, Wyatt TA. Dimethylarginine dimethylaminohydrolase (DDAH) overexpression enhances wound repair in airway epithelial cells exposed to agricultural organic dust. Inhal Toxicol 2018; 30:133-139. [PMID: 29793367 DOI: 10.1080/08958378.2018.1474976] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
OBJECTIVE Workers exposed to dusts from concentrated animal feeding operations have a high prevalence of pulmonary diseases. These exposures lead to chronic inflammation and aberrant airway remodeling. Previous work shows that activating cAMP-dependent protein kinase (PKA) enhances airway epithelial wound repair while activating protein kinase C (PKC) inhibits wound repair. Hog barn dust extracts slow cell migration and wound repair via a PKC-dependent mechanism. Further, blocking nitric oxide (NO) production in bronchial epithelial cells prevents PKA activation. We hypothesized that blocking an endogenous NO inhibitor, asymmetric dimethylarginine, by overexpressing dimethylarginine dimethylaminohydrolase mitigates the effects of hog dust extract on airway epithelial would repair. MATERIALS/METHODS We cultured primary tracheal epithelial cells in monolayers from both wild-type (WT) and dimethylarginine dimethylaminohydrolase overexpressing C57Bl/6 (DDAH1 transgenic) mice and measured wound repair using the electric cell impedance sensing system. RESULTS Wound closure in epithelial cells from WT mice occurred within 24 h in vitro. In contrast, treatment of the WT cell monolayers with 5% hog dust extract prevented significant NO-stimulated wound closure. In cells from DDAH1 transgenic mice, control wounds were repaired up to 8 h earlier than seen in WT mice. A significant enhancement of wound repair was observed in DDAH cells compared to WT cells treated with hog dust extract for 24 h. Likewise, cells from DDAH1 transgenic mice demonstrated increased NO and PKA activity and decreased hog dust extract-stimulated PKC. DISCUSSION/CONCLUSION Preserving the NO signal through endogenous inhibition of asymmetric dimethylarginine enhances wound repair even in the presence of dust exposure.
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Affiliation(s)
- Deepak Chandra
- a Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine , University of Nebraska Medical Center , Omaha , NE Douglas
| | - Jill A Poole
- a Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine , University of Nebraska Medical Center , Omaha , NE Douglas
| | - Kristina L Bailey
- a Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine , University of Nebraska Medical Center , Omaha , NE Douglas.,b Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System , Omaha , NE Douglas
| | - Elizabeth Staab
- a Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine , University of Nebraska Medical Center , Omaha , NE Douglas
| | - Jenea M Sweeter
- a Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine , University of Nebraska Medical Center , Omaha , NE Douglas
| | - Jane M DeVasure
- a Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine , University of Nebraska Medical Center , Omaha , NE Douglas
| | - Debra J Romberger
- a Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine , University of Nebraska Medical Center , Omaha , NE Douglas.,b Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System , Omaha , NE Douglas
| | - Todd A Wyatt
- a Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine , University of Nebraska Medical Center , Omaha , NE Douglas.,b Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System , Omaha , NE Douglas.,c Department of Environmental, Agricultural and Occupational Health , University of Nebraska Medical Center , Omaha , NE Douglas
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Monti L, Morbidelli L, Rossi A. Impaired Cerebral Perfusion in Multiple Sclerosis: Relevance of Endothelial Factors. Biomark Insights 2018; 13:1177271918774800. [PMID: 29795976 PMCID: PMC5960845 DOI: 10.1177/1177271918774800] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Accepted: 04/07/2018] [Indexed: 12/21/2022] Open
Abstract
Magnetic resonance imaging techniques measuring in vivo brain perfusion and integrity of the blood-brain barrier have developed rapidly in the past decade, resulting in a wide range of available methods. This review first discusses their principles, possible pitfalls, and potential for quantification and outlines clinical application in neurological disorders. Then, we focus on the endothelial cells of the blood-brain barrier, pointing out their contribution in regulating vascular tone by production of vasoactive substances. Finally, the role of these substances in brain hypoperfusion in multiple sclerosis is discussed.
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Affiliation(s)
- Lucia Monti
- Unit of Neuroimaging and Neurointervention, Department of Neurological and Neurosensory Sciences, "Santa Maria alle Scotte" General Hospital, University Hospital of Siena, Siena, Italy
| | | | - Alessandro Rossi
- Unit of Neurology and Clinical Neurophysiology, Department of Neurological and Neurosensory Sciences, University Hospital of Siena, Siena, Italy
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Triches CB, Mayer S, Quinto BMR, Batista MC, Zanella MT. Association of endothelial dysfunction with cardiovascular risk factors and new-onset diabetes mellitus in patients with hypertension. J Clin Hypertens (Greenwich) 2018; 20:935-941. [PMID: 29604155 PMCID: PMC8031101 DOI: 10.1111/jch.13269] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 02/19/2018] [Accepted: 02/28/2018] [Indexed: 01/14/2023]
Abstract
Asymmetric dimethylarginine (ADMA), which is the main endogenous inhibitor of nitric oxide synthase, plays a critical role in the process of endothelial dysfunction. The authors evaluated the association between high plasma ADMA levels in patients with hypertension and the presence of cardiovascular risk factors and the development of type 2 diabetes mellitus (DM) and cardiovascular outcomes, including death. The authors evaluated 191 patients with hypertension who were stratified into two groups according to the median value of basal ADMA: those with high levels of plasma ADMA (>0.55 μmol/L) and low levels of plasma ADMA (≤0.55 μmol/L) who were prospectively evaluated over 5.8 years. High ADMA levels were seen in patients with higher weight, body mass index, waist circumference, triglycerides, uric acid, and high-sensitivity C-reactive protein, and lower levels of high-density lipoprotein cholesterol and in patients with type 2 DM. There was an association between high plasma ADMA levels and the occurrence of cardiovascular death. In a subgroup of patients with hypertension free from metabolic syndrome and DM at baseline, there was an association between high ADMA levels and the development of type 2 DM. This study confirms the association of high plasma ADMA levels and the presence of cardiovascular risk factors in patients with hypertension and suggests a positive predictive value of high plasma ADMA levels for cardiovascular death in patients with hypertension and also for the development of type 2 DM in a subgroup of patients with hypertension free from metabolic abnormalities.
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Affiliation(s)
| | - Saurus Mayer
- Nephrology DivisionUniversidade Federal de São PauloSão Paulo/SPBrazil
| | | | - Marcelo Costa Batista
- Nephrology DivisionUniversidade Federal de São PauloSão Paulo/SPBrazil
- Research and Education InstituteHospital Israelita Albert EinsteinSão Paulo/SPBrazil
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Bell T, Araujo M, Luo Z, Tomlinson J, Leiper J, Welch WJ, Wilcox CS. Regulation of fluid reabsorption in rat or mouse proximal renal tubules by asymmetric dimethylarginine and dimethylarginine dimethylaminohydrolase 1. Am J Physiol Renal Physiol 2018. [PMID: 29513072 DOI: 10.1152/ajprenal.00560.2017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Nitric oxide prevents hypertension yet enhances proximal tubule Na+ reabsorption. Nitric oxide synthase is inhibited by asymmetric dimethylarginine (ADMA) that is metabolized by dimethylarginine dimethylaminohydrolase (DDAH) whose type 1 isoform is expressed abundantly in the proximal tubule (PT). We hypothesize that ADMA metabolized by DDAH-1 inhibits fluid reabsorbtion (Jv) by the proximal tubule. S2 segments of the PT were microperfused between blocks in vivo to assess Jv in anesthetized rats. Compared with vehicle, microperfusion of ADMA or Nω-nitro-l-arginine methyl ester (l-NAME) in the proximal tubule reduced Jv dose dependently. At 10-4 mol/l both reduced Jv by ~40% (vehicle: 3.2 ± 0.7 vs. ADMA: 2.1 ± 0.5, P < 0.01 vs. l-NAME: 1.9 ± 0.4 nl·min-1·mm-1, P < 0.01; n = 10). Selective inhibition of DDAH-1 in rats with intravenous L-257 (60 mg/kg) given 2 h before and L-257 (10-5 mol/l) perfused in the proximal tubule for 5 min reduced Jv by 32 ± 4% (vehicle: 3.2 ± 0.5 vs. L-257: 2.2 ± 0.5 nl·min-1·mm-1; P < 0.01) and increased plasma ADMA by ≈50% (vehicle: 0.46 ± 0.03 vs. L-257: 0.67 ± 0.03 µmol/l, P < 0.0001) without changing plasma symmetric dimethylarginine. Compared with nontargeted control small-interference RNA, knock down of DDAH-1 in mice by 60% with targeted small-interference RNAs (siRNA) reduced Jv by 29 ± 5% (nontargeted siRNA: 2.8 ± 0.20 vs. DDAH-1 knockdown: 1.9 ± 0.31 nl·min-1·mm-1, P < 0.05). In conclusion, fluid reabsorption in the proximal tubule is reduced by tubular ADMA or by blocking its metabolism by DDAH-1. L-257 is a novel regulator of proximal tubule fluid reabsorption.
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Affiliation(s)
- Tracy Bell
- Department of Natural Sciences, University of Maryland Eastern Shore, Princess Anne, Maryland
| | - Magali Araujo
- Hypertension Research Center and Division of Nephrology and Hypertension, Georgetown University , Washington, District of Columbia
| | - Zaiming Luo
- Hypertension Research Center and Division of Nephrology and Hypertension, Georgetown University , Washington, District of Columbia
| | - James Tomlinson
- Medical Research Council Clinical Research Center, Royal Postgraduate Medical School and Hammersmith Hospital , London , United Kingdom
| | - James Leiper
- Institute of Cardiovascular and Medical Sciences, University of Glasgow , United Kingdom
| | - William J Welch
- Hypertension Research Center and Division of Nephrology and Hypertension, Georgetown University , Washington, District of Columbia
| | - Christopher S Wilcox
- Hypertension Research Center and Division of Nephrology and Hypertension, Georgetown University , Washington, District of Columbia
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Chen D, Zhang KQ, Li B, Sun DQ, Zhang H, Fu Q. Epigallocatechin-3-gallate ameliorates erectile function in aged rats via regulation of PRMT1/DDAH/ADMA/NOS metabolism pathway. Asian J Androl 2018; 19:291-297. [PMID: 27080477 PMCID: PMC5427783 DOI: 10.4103/1008-682x.178486] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Aging-related ED is predominantly attributed to neurovascular dysfunction mediated by NO suppression and increased oxidative stress in penis. The alterations of protein arginine methyltransferases 1 (PRMT1)/dimethylarginine dimethylaminohydrolase (DDAH)/asymmetrical dimethylarginine (ADMA)/NO synthase (NOS) pathway regulate NO production in the vascular endothelium. Epigallocatechin-3-gallate (EGCG) is one of the most abundant and antioxidative ingredients isolated from green tea. In the present study, 40 Sprague-Dawley rats were randomly distributed into four groups: one young rat group and three aged rat groups treated with daily gavage feedings of EGCG at doses of 0, 10 mg kg−1, and 100 mg kg−1 for 12 weeks, respectively. Erectile function was assessed by electrical stimulation of the cavernous nerves with intracavernous pressure (ICP) measurement. After euthanasia, penile tissue was investigated using Western blot and ELISA to assess the PRMT1/DDAH/ADMA/NOS metabolism pathway. Superoxide dismutase (SOD) and malondialdehyde (MDA) levels were detected by colorimetry. We also evaluated smooth muscle contents. The ratio of maximal ICP and mean systemic arterial pressure (MAP) was markedly higher in EGCG-treated aged rats than in untreated aged rats. We found that DDAH1 and DDAH2 were expressed in cavernosal tissue, and they were downregulated in corpora of aged rats. The administration of EGCG upregulated the expression and activity of DDAH. In contrast, EGCG treatment downregulated the expression of PRMT1 and ADMA content. Moreover, EGCG-treated rats showed an improvement in smooth muscle expression, the ratio of smooth muscle cell/collagen fibril, SOD activity, and MDA levels when compared with untreated aged rats.
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Affiliation(s)
- Dong Chen
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, Shandong, China
| | - Ke-Qin Zhang
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, Shandong, China
| | - Bo Li
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, Shandong, China
| | - Ding-Qi Sun
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, Shandong, China
| | - Hui Zhang
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, Shandong, China
| | - Qiang Fu
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, Shandong, China
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Triches CB, Quinto M, Mayer S, Batista M, Zanella MT. Relation of asymmetrical dimethylarginine levels with renal outcomes in hypertensive patients with and without type 2 diabetes mellitus. J Diabetes Complications 2018; 32:316-320. [PMID: 29398328 DOI: 10.1016/j.jdiacomp.2017.12.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 11/14/2017] [Accepted: 12/16/2017] [Indexed: 12/25/2022]
Abstract
AIM The aim of the study was to evaluate the association between high plasma ADMA levels, a biomarker of endothelial dysfunction, with the progression of albuminuria and chronic kidney disease (CKD) in hypertensive patients, with and without type 2 diabetes mellitus. METHODS We successfully contacted 213 of 644 patients who had been evaluated between 2004 and 2005 and for whom basal data were available. After the exclusion of 51 patients, 162 hypertensive patients who were free from albuminuria were stratified into the following 4 groups according to the presence of diabetes and plasma ADMA percentiles: general hypertensive patients with high levels of plasma ADMA (>P4 or ADMA > 0.61 μmol/L), general hypertensive patients with low levels of plasma ADMA (≤P4), diabetic hypertensive patients with high levels of plasma ADMA (>P4), and diabetic hypertensive patients with low levels of plasma ADMA (≤P4). RESULTS The patients were prospectively evaluated over 5.8 years. High ADMA levels were associated with the progression of albuminuria in hypertensive patients, with and without type 2 diabetes. Major increases in the ADMA value during follow-up were associated with the progression of CKD, and direct correlations between ADMA changes and GFR changes were observed in the whole group and in the subgroup of diabetic patients. CONCLUSIONS We suggest that high plasma ADMA levels might be a biomarker of renal disease progression and might even be an early predictor of albuminuria and its progression to the late stages of renal disease in hypertensive and diabetic hypertensive patients.
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Affiliation(s)
- Cristina B Triches
- Endocrinology Division, Universidade Federal de São Paulo, Rua Diogo de Faria 307, 04037-000, São Paulo/SP, Brazil.
| | - Marie Quinto
- Nephrology Division, Universidade Federal de São Paulo, Rua Botucatu 740, 04023-900, São Paulo/SP, Brazil.
| | - Saurus Mayer
- Nephrology Division, Universidade Federal de São Paulo, Rua Botucatu 740, 04023-900, São Paulo/SP, Brazil
| | - Marcelo Batista
- Nephrology Division, Universidade Federal de São Paulo, Rua Botucatu 740, 04023-900, São Paulo/SP, Brazil; Research and Education Institute, Hospital Israelita Albert Einstein, Avenida Albert Einstein 627/701, 05652-900, São Paulo/SP, Brazil
| | - Maria Teresa Zanella
- Endocrinology Division, Universidade Federal de São Paulo, Rua Diogo de Faria 307, 04037-000, São Paulo/SP, Brazil
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Owusu Darkwa E, Djagbletey R, Sottie D, Owoo C, Vanderpuye NM, Essuman R, Aryee G. Serum nitric oxide levels in healthy pregnant women: a case- control study in a tertiary facility in Ghana. Matern Health Neonatol Perinatol 2018; 4:3. [PMID: 29479454 PMCID: PMC5819155 DOI: 10.1186/s40748-017-0072-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 12/28/2017] [Indexed: 12/31/2022] Open
Abstract
Background Pregnancy is associated with significant changes in maternal cardiovascular system which regulates oxygen and nutrient supply to the growing foetus. Nitric oxide, a physiologic vascular smooth muscle relaxant regulates blood flow and therefore may play a role in the cardiovascular changes in pregnancy. The study aimed to determine the levels and changes in maternal serum nitric oxide levels during healthy pregnancy. Methods A case-control study was conducted among 32 healthy non-pregnant women as controls and 100 healthy pregnant women (consisting of 33 first trimester, 37 s trimester, and 30 third trimester) as cases. Subjects were consecutively recruited into the study after obtaining an informed consent and meeting the inclusion criteria. Griess Reagent method was used to determine serum nitric oxide levels. Results There were no statistically significant difference in the ages and parity of recruited cases and controls. Mean arterial blood pressures were significantly lower (p = 0.009) and serum nitric oxide levels were significantly higher (p < 0.001) in healthy pregnant women compared to healthy non-pregnant women. There was a non-significant progressive increase in serum nitric oxide levels during healthy normal pregnancy. Conclusions The finding of a significantly reduced blood pressures and a significant increase in serum nitric oxide levels in healthy pregnancy may suggest a role of nitric oxide in vascular adaptation in pregnancy.
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Affiliation(s)
- Ebenezer Owusu Darkwa
- 1Department of Anaesthesia, Korle-bu Teaching Hospital, University of Ghana School of Medicine and Dentistry, College of Health Sciences, P. O. Box 4236, Accra, Ghana
| | - Robert Djagbletey
- 1Department of Anaesthesia, Korle-bu Teaching Hospital, University of Ghana School of Medicine and Dentistry, College of Health Sciences, P. O. Box 4236, Accra, Ghana
| | - Daniel Sottie
- 2Department of Anaesthesia, Korle-Bu Teaching Hospital, Accra, Ghana
| | - Christian Owoo
- 1Department of Anaesthesia, Korle-bu Teaching Hospital, University of Ghana School of Medicine and Dentistry, College of Health Sciences, P. O. Box 4236, Accra, Ghana
| | | | - Raymond Essuman
- 1Department of Anaesthesia, Korle-bu Teaching Hospital, University of Ghana School of Medicine and Dentistry, College of Health Sciences, P. O. Box 4236, Accra, Ghana
| | - George Aryee
- 1Department of Anaesthesia, Korle-bu Teaching Hospital, University of Ghana School of Medicine and Dentistry, College of Health Sciences, P. O. Box 4236, Accra, Ghana
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Ferrigno A, Di Pasqua LG, Berardo C, Siciliano V, Rizzo V, Adorini L, Richelmi P, Vairetti M. The farnesoid X receptor agonist obeticholic acid upregulates biliary excretion of asymmetric dimethylarginine via MATE-1 during hepatic ischemia/reperfusion injury. PLoS One 2018; 13:e0191430. [PMID: 29346429 PMCID: PMC5773219 DOI: 10.1371/journal.pone.0191430] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 01/04/2018] [Indexed: 12/12/2022] Open
Abstract
Background We previously showed that increased asymmetric dimethylarginine (ADMA) biliary excretion occurs during hepatic ischemia/reperfusion (I/R), prompting us to study the effects of the farnesoid X receptor (FXR) agonist obeticholic acid (OCA) on bile, serum and tissue levels of ADMA after I/R. Material and methods Male Wistar rats were orally administered 10mg/kg/day of OCA or vehicle for 5 days and were subjected to 60 min partial hepatic ischemia or sham-operated. After a 60 min reperfusion, serum, tissue and bile ADMA levels, liver mRNA and protein expression of ADMA transporters (CAT-1, CAT-2A, CAT-2B, OCT-1, MATE-1), and enzymes involved in ADMA synthesis (protein-arginine-N-methyltransferase-1, PRMT-1) and metabolism (dimethylarginine-dimethylaminohydrolase-1, DDAH-1) were measured. Results OCA administration induced a further increase in biliary ADMA levels both in sham and I/R groups, with no significant changes in hepatic ADMA content. A reduction in CAT-1, CAT-2A or CAT-2B transcripts was found in OCA-treated sham-operated rats compared with vehicle. Conversely, OCA administration did not change CAT-1, CAT-2A or CAT-2B expression, already reduced by I/R. However, a marked decrease in OCT-1 and increase in MATE-1 expression was observed. A similar trend occurred with protein expression. Conclusion The reduced mRNA expression of hepatic CAT transporters suggests that the increase in serum ADMA levels is probably due to decreased liver uptake of ADMA from the systemic circulation. Conversely, the mechanism involved in further increasing biliary ADMA levels in sham and I/R groups treated with OCA appears to be MATE-1-dependent.
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Affiliation(s)
- Andrea Ferrigno
- Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy
| | | | - Clarissa Berardo
- Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy
| | - Veronica Siciliano
- Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy
| | - Vittoria Rizzo
- Department of Molecular Medicine, IRCCS San Matteo, University of Pavia, Pavia, Italy
| | - Luciano Adorini
- Intercept Pharmaceuticals, San Diego, California, United States of America
| | - Plinio Richelmi
- Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy
| | - Mariapia Vairetti
- Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy
- * E-mail:
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Asymmetric Dimethyl Arginine as a Biomarker of Atherosclerosis in Rheumatoid Arthritis. Mediators Inflamm 2018; 2018:3897295. [PMID: 29576746 PMCID: PMC5822828 DOI: 10.1155/2018/3897295] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 11/27/2017] [Indexed: 12/17/2022] Open
Abstract
Cardiovascular disease is the main cause of morbidity and mortality in rheumatoid arthritis (RA). Despite the advent on new drugs targeting the articular manifestations, the burden of cardiovascular disease is still an unmet need in the management of RA. The pathophysiology of accelerated atherosclerosis associated to RA is not yet fully understood, and reliable and specific markers of early cardiovascular involvement are still lacking. Asymmetric dimethylarginine is gaining attention for its implication in the pathogenesis of endothelial dysfunction and as biomarkers of subclinical atherosclerosis. Moreover, the metabolic pathway of methylarginines offers possible targets for therapeutic interventions to decrease the cardiovascular risk. The purpose of this review is to describe the main causes of increased methylarginine levels in RA, their implication in accelerated atherosclerosis, the possible role as biomarkers of cardiovascular risk, and finally the available data on current pharmacological treatment.
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L-arginine supplementation reduces mortality and improves disease outcome in mice infected with Trypanosoma cruzi. PLoS Negl Trop Dis 2018; 12:e0006179. [PMID: 29337988 PMCID: PMC5786330 DOI: 10.1371/journal.pntd.0006179] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 01/26/2018] [Accepted: 12/19/2017] [Indexed: 11/19/2022] Open
Abstract
Chagas disease caused by Trypanosoma cruzi is a neglected disease that affects about 7 million people in Latin America, recently emerging on other continents due to migration. As infection in mice is characterized by depletion of plasma L-arginine, the effect on infection outcome was tested in mice with or without L-arginine supplementation and treatment with 1400W, a specific inhibitor of inducible nitric oxide synthase (iNOS). We found that levels of L-arginine and citrulline were reduced in the heart and plasma of infected mice, whereas levels of asymmetric dimethylarginine, an endogenous iNOS inhibitor, were higher. Moreover, L-arginine supplementation decreased parasitemia and heart parasite burden, improving clinical score and survival. Nitric oxide production in heart tissue and plasma was increased by L-arginine supplementation, while pharmacological inhibition of iNOS yielded an increase in parasitemia and worse clinical score. Interestingly, electrocardiograms improved in mice supplemented with L-arginine, suggesting that it modulates infection and heart function and is thus a potential biomarker of pathology. More importantly, L-arginine may be useful for treating T. cruzi infection, either alone or in combination with other antiparasitic drugs. Trypanosoma cruzi is the causative agent of the neglected Chagas disease in humans. During infection in mice, depletion of plasma L-arginine is correlated with mortality. L-arginine is a semi-essential amino acid needed for cell proliferation, and is the substrate of arginase 1 (Arg-1) and inducible nitric oxide synthase (iNOS), which is involved in the immune response against infections. Observed L-arginine depletion is likely caused by increased Arg-1 activity, but the effect on immune response are still unknown. Our hypothesis is that L-arginine depletion may block nitric oxide (NO) production by iNOS, which is needed for parasite killing. To test this hypothesis, mice were supplemented with and without L-arginine, and the differential effect of treatment with an iNOS inhibitor was determined. L-arginine supplement was beneficial to the mice, lowering mortality and improving disease outcome and heart function. The beneficial effect was associated with increased levels of NO, thus low levels of L-arginine and NO are considered candidate markers of pathology. Finally, as L-arginine is a common dietary supplement, it may be useful for treatment of Chagas patients, either alone or in combination with antiparasitic drugs.
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Wang C, Luo Z, Carter G, Wellstein A, Jose PA, Tomlinson J, Leiper J, Welch WJ, Wilcox CS, Wang D. NRF2 prevents hypertension, increased ADMA, microvascular oxidative stress, and dysfunction in mice with two weeks of ANG II infusion. Am J Physiol Regul Integr Comp Physiol 2017; 314:R399-R406. [PMID: 29167164 DOI: 10.1152/ajpregu.00122.2017] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Nuclear factor erythyroid factor 2 (Nrf2) transcribes genes in cultured endothelial cells that reduce reactive oxygen species (ROS) and generate nitric oxide (NO) or metabolize asymmetric dimethylarginine (ADMA), which inhibits NO synthase (NOS). Therefore, we undertook a functional study to test the hypothesis that activation of Nrf2 by tert-butylhydroquinone (tBHQ) preserves microvascular endothelial function during oxidative stress. Wild-type CB57BL/6 (wt), Nrf2 wt (+/+), or knockout (-/-) mice received vehicle (Veh) or tBHQ (0.1%; activator of Nrf2) during 14-day infusions of ANG II (to induce oxidative stress) or sham. MAP was recorded by telemetry. Mesenteric resistance arterioles were studied on isometric myographs and vascular NO and ROS by fluorescence microscopy. ANG II increased the mean arterial pressure (112 ± 5 vs. 145 ± 5 mmHg; P < 0.01) and excretion of 8-isoprostane F2α (2.8 ± 0.3 vs. 3.8 ± 0.3 ng/mg creatinine; P < 0.05) at 12-14 days. However, 12 days of ANG II reduced endothelium-derived relaxation (27 ± 5 vs. 17 ± 3%; P < 0.01) and NO (0.38 ± 0.07 vs. 0.18 ± 0.03 units; P < 0.01) but increased microvascular remodeling, endothelium-derived contractions (7.5 ± 0.5 vs. 13.0 ± 1.7%; P < 0.01), superoxide (0.09 ± 0.03 vs. 0.29 ± 0.08 units; P < 0.05), and contractions to U-46,619 (87 ± 6 vs. 118 ± 3%; P < 0.05), and endothelin-1(89 ± 4 vs. 123 ± 12%; P < 0.05). tBHQ prevented all of these effects of ANG II at 12-14 days in Nrf2+/+ mice but not in Nrf2-/- mice. In conclusion, tBHQ activates Nrf2 to prevent microvascular endothelial dysfunction, remodeling, and contractility, and moderate ADMA and hypertension at 12-14 days of ANG II infusion, thereby preserving endothelial function and preventing hypertension.
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Affiliation(s)
- Cheng Wang
- Hypertension Center and Division of Nephrology and Hypertension, Georgetown University , Washington, D.C.,Division of Nephrology, Department of Medicine, 5th Hospital of Sun Yat-Sen University , Zhuhai, Guangdong , China
| | - Zaiming Luo
- Hypertension Center and Division of Nephrology and Hypertension, Georgetown University , Washington, D.C
| | - Gabriella Carter
- Hypertension Center and Division of Nephrology and Hypertension, Georgetown University , Washington, D.C
| | - Anton Wellstein
- Lombardi Cancer Center, Georgetown University , Washington, D.C
| | - Pedro A Jose
- Division of Nephrology, George Washington University School of Medicine and Health Sciences , Washington, D.C
| | - James Tomlinson
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College , London , United Kingdom
| | - James Leiper
- Institute of Cardiovascular and Medical Sciences , University of Glasgow , Glasgow United Kingdom
| | - William J Welch
- Hypertension Center and Division of Nephrology and Hypertension, Georgetown University , Washington, D.C
| | - Christopher S Wilcox
- Hypertension Center and Division of Nephrology and Hypertension, Georgetown University , Washington, D.C
| | - Dan Wang
- Hypertension Center and Division of Nephrology and Hypertension, Georgetown University , Washington, D.C
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Milewski K, Bogacińska-Karaś M, Fręśko I, Hilgier W, Jaźwiec R, Albrecht J, Zielińska M. Ammonia Reduces Intracellular Asymmetric Dimethylarginine in Cultured Astrocytes Stimulating Its y⁺LAT2 Carrier-Mediated Loss. Int J Mol Sci 2017; 18:ijms18112308. [PMID: 29099056 PMCID: PMC5713277 DOI: 10.3390/ijms18112308] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 10/19/2017] [Accepted: 10/27/2017] [Indexed: 01/24/2023] Open
Abstract
Previously we had shown that ammonia stimulates nitric oxide (NO) synthesis in astrocytes by increasing the uptake of the precursor amino acid, arginine via the heteromeric arginine/glutamine transporter y+LAT2. Ammonia also increases the concentration in the brain of the endogenous inhibitor of nitric oxide synthases (NOS), asymmetric dimethylarginine (ADMA), but distribution of ADMA surplus between the intraastrocytic and extracellular compartments of the brain has not been studied. Here we tested the hypothesis that ammonia modulates the distribution of ADMA and its analog symmetric dimethylarginine (SDMA) between the two compartments of the brain by competition with arginine for the y+LAT2 transporter. In extension of the hypothesis we analyzed the ADMA/Arg interaction in endothelial cells forming the blood-brain barrier. We measured by high-performance liquid chromatography (HPLC) and mass spectrometry (MS) technique the concentration of arginine, ADMA and SDMA in cultured cortical astrocytes and in a rat brain endothelial cell line (RBE-4) treated with ammonia and the effect of silencing the expression of a gene coding y+LAT2. We also tested the expression of ADMA metabolism enzymes: protein arginine methyltransferase (PRMT) and dimethylarginine dimethyl aminohydrolase (DDAH) and arginine uptake to astrocytes. Treatment for 48 h with 5 mM ammonia led to an almost 50% reduction of ADMA and SDMA concentration in both cell types, and the effect in astrocytes was substantially attenuated by silencing of the Slc7a6 gene. Moreover, the y+LAT2-dependent component of ammonia-evoked arginine uptake in astrocytes was reduced in the presence of ADMA in the medium. Our results suggest that increased ADMA efflux mediated by upregulated y+LAT2 may be a mechanism by which ammonia interferes with intra-astrocytic (and possibly intra-endothelial cell) ADMA content and subsequently, NO synthesis in both cell types.
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Affiliation(s)
- Krzysztof Milewski
- Department of Neurotoxicology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 02-106 Warsaw, Poland.
| | - Małgorzata Bogacińska-Karaś
- Department of Neurotoxicology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 02-106 Warsaw, Poland.
| | - Inez Fręśko
- Department of Neurotoxicology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 02-106 Warsaw, Poland.
| | - Wojciech Hilgier
- Department of Neurotoxicology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 02-106 Warsaw, Poland.
| | - Radosław Jaźwiec
- Mass Spectrometry Laboratory, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, 02-106 Warsaw, Poland.
| | - Jan Albrecht
- Department of Neurotoxicology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 02-106 Warsaw, Poland.
| | - Magdalena Zielińska
- Department of Neurotoxicology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 02-106 Warsaw, Poland.
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