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Socha MW, Chmielewski J, Pietrus M, Wartęga M. Endogenous Digitalis-like Factors as a Key Molecule in the Pathophysiology of Pregnancy-Induced Hypertension and a Potential Therapeutic Target in Preeclampsia. Int J Mol Sci 2023; 24:12743. [PMID: 37628922 PMCID: PMC10454430 DOI: 10.3390/ijms241612743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 08/10/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
Preeclampsia (PE), the most severe presentation of hypertensive disorders of pregnancy, is the major cause of morbidity and mortality linked to pregnancy, affecting both mother and fetus. Despite advances in prophylaxis and managing PE, delivery of the fetus remains the only causative treatment available. Focus on complex pathophysiology brought the potential for new treatment options, and more conservative options allowing reduction of feto-maternal complications and sequelae are being investigated. Endogenous digitalis-like factors, which have been linked to the pathogenesis of preeclampsia since the mid-1980s, have been shown to play a role in the pathogenesis of various cardiovascular diseases, including congestive heart failure and chronic renal disease. Elevated levels of EDLF have been described in pregnancy complicated by hypertensive disorders and are currently being investigated as a therapeutic target in the context of a possible breakthrough in managing preeclampsia. This review summarizes mechanisms implicating EDLFs in the pathogenesis of preeclampsia and evidence for their potential role in treating this doubly life-threatening disease.
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Affiliation(s)
- Maciej W. Socha
- Department of Perinatology, Gynecology and Gynecologic Oncology, Faculty of Health Sciences, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Łukasiewicza 1, 85-821 Bydgoszcz, Poland
- Department of Obstetrics and Gynecology, St. Adalbert’s Hospital in Gdańsk, Copernicus Healthcare Entity, Jana Pawła II 50, 80-462 Gdańsk, Poland
| | - Jakub Chmielewski
- Department of Obstetrics and Gynecology, St. Adalbert’s Hospital in Gdańsk, Copernicus Healthcare Entity, Jana Pawła II 50, 80-462 Gdańsk, Poland
| | - Miłosz Pietrus
- Department of Gynecology and Obstetrics, Jagiellonian University Medical College, 31-501 Kraków, Poland
| | - Mateusz Wartęga
- Department of Pathophysiology, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie- Skłodowskiej 9, 85-094 Bydgoszcz, Poland
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Carullo N, Fabiano G, D'Agostino M, Zicarelli MT, Musolino M, Presta P, Michael A, Andreucci M, Bolignano D, Coppolino G. New Insights on the Role of Marinobufagenin from Bench to Bedside in Cardiovascular and Kidney Diseases. Int J Mol Sci 2023; 24:11186. [PMID: 37446363 DOI: 10.3390/ijms241311186] [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: 03/15/2023] [Revised: 07/03/2023] [Accepted: 07/04/2023] [Indexed: 07/15/2023] Open
Abstract
Marinobufagenin (MBG) is a member of the bufadienolide family of compounds, which are natural cardiac glycosides found in a variety of animal species, including man, which have different physiological and biochemical functions but have a common action on the inhibition of the adenosine triphosphatase sodium-potassium pump (Na+/K+-ATPase). MBG acts as an endogenous cardiotonic steroid, and in the last decade, its role as a pathogenic factor in various human diseases has emerged. In this paper, we have collated major evidence regarding the biological characteristics and functions of MBG and its implications in human pathology. This review focused on MBG involvement in chronic kidney disease, including end-stage renal disease, cardiovascular diseases, sex and gender medicine, and its actions on the nervous and immune systems. The role of MBG in pathogenesis and the development of a wide range of pathological conditions indicate that this endogenous peptide could be used in the future as a diagnostic biomarker and/or therapeutic target, opening important avenues of scientific research.
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Affiliation(s)
- Nazareno Carullo
- Renal Unit, "Magna Graecia" University of Catanzaro, 88100 Catanzaro, Italy
| | - Giuseppe Fabiano
- Renal Unit, "Magna Graecia" University of Catanzaro, 88100 Catanzaro, Italy
| | - Mario D'Agostino
- Renal Unit, "Magna Graecia" University of Catanzaro, 88100 Catanzaro, Italy
| | | | - Michela Musolino
- Renal Unit, "Magna Graecia" University of Catanzaro, 88100 Catanzaro, Italy
| | - Pierangela Presta
- Renal Unit, "Magna Graecia" University of Catanzaro, 88100 Catanzaro, Italy
| | - Ashour Michael
- Renal Unit, "Magna Graecia" University of Catanzaro, 88100 Catanzaro, Italy
| | - Michele Andreucci
- Renal Unit, "Magna Graecia" University of Catanzaro, 88100 Catanzaro, Italy
| | - Davide Bolignano
- Renal Unit, "Magna Graecia" University of Catanzaro, 88100 Catanzaro, Italy
| | - Giuseppe Coppolino
- Renal Unit, "Magna Graecia" University of Catanzaro, 88100 Catanzaro, Italy
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Bolignano D, Greco M, Presta P, Caglioti A, Carullo N, Zicarelli M, Foti DP, Dragone F, Andreucci M, Coppolino G. Marinobufagenin, Left Ventricular Hypertrophy and Residual Renal Function in Kidney Transplant Recipients. J Clin Med 2023; 12:jcm12093072. [PMID: 37176512 PMCID: PMC10179363 DOI: 10.3390/jcm12093072] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/10/2023] [Accepted: 04/20/2023] [Indexed: 05/15/2023] Open
Abstract
BACKGROUND Left ventricular hypertrophy (LVH), which is a pervasive complication of end-stage kidney disease (ESKD), persists in some uremic individuals even after kidney transplantation (Ktx), contributing to worsening CV outcomes. Marinobufagenin (MBG), an endogenous steroid cardiotonic hormone endowed with natriuretic and vasoconstrictive properties, is an acknowledged trigger of uremic cardiomyopathy. However, its clinical significance in the setting of Ktx remains undefined. METHODS In a cohort of chronic Ktx recipients (n = 40), we assessed circulating MBG together with a thorough clinical and echocardiographic examination. Forty matched haemodialysis (HD) patients and thirty healthy subjects served as controls for MBG measurements. Patients were then prospectively followed up to 12 months and the occurrence of an established cardio-renal endpoint (death, CV events, renal events, graft rejection) was recorded. RESULTS Median MBG plasma levels were lower in Ktx as compared with HD patients (p = 0.02), but higher as compared with healthy controls (p = 0.0005). Urinary sodium (β = 0.423; p = 0.01) and eGFR (β = -0.324; p = 0.02) were the sole independent predictors of MBG in this cohort, while a strong correlation with left ventricular mass index (LVMi), found in univariate analyses (R = 0.543; p = 0.0007), gained significance only in multivariate models not including eGFR. Logistic regression analyses indicated MBG as a significant predictor of the combined endpoint (OR 2.38 [1.10-5.12] per each 1 nmoL/L increase; p = 0.01), as well as eGFR, LVMi, serum phosphate and proteinuria. CONCLUSIONS Ktx recipients display altered MBG levels which are influenced by sodium balance, renal impairment and the severity of LVH. Thus, MBG might represent an important missing link between reduced graft function and pathological cardiac remodelling and may hold important prognostic value for improving cardio-renal risk assessment.
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Affiliation(s)
- Davide Bolignano
- Nephrology and Dialysis Unit, University "Magna-Graecia" of Catanzaro, 88100 Catanzaro, Italy
- Department of Medical and Surgical Sciences, University "Magna-Graecia" of Catanzaro, 88100 Catanzaro, Italy
| | - Marta Greco
- Clinical Pathology Lab, University "Magna-Graecia" of Catanzaro, 88100 Catanzaro, Italy
- Department of Health Sciences, University "Magna-Graecia" of Catanzaro, 88100 Catanzaro, Italy
| | - Pierangela Presta
- Nephrology and Dialysis Unit, University "Magna-Graecia" of Catanzaro, 88100 Catanzaro, Italy
| | - Alfredo Caglioti
- Nephrology and Dialysis Unit, University "Magna-Graecia" of Catanzaro, 88100 Catanzaro, Italy
| | - Nazareno Carullo
- Nephrology and Dialysis Unit, University "Magna-Graecia" of Catanzaro, 88100 Catanzaro, Italy
| | - Mariateresa Zicarelli
- Nephrology and Dialysis Unit, University "Magna-Graecia" of Catanzaro, 88100 Catanzaro, Italy
| | - Daniela Patrizia Foti
- Clinical Pathology Lab, University "Magna-Graecia" of Catanzaro, 88100 Catanzaro, Italy
- Department of Clinical and Experimental Medicine, University "Magna-Graecia" of Catanzaro, 88100 Catanzaro, Italy
| | - Francesco Dragone
- Clinical Pathology Lab, University "Magna-Graecia" of Catanzaro, 88100 Catanzaro, Italy
| | - Michele Andreucci
- Nephrology and Dialysis Unit, University "Magna-Graecia" of Catanzaro, 88100 Catanzaro, Italy
- Department of Health Sciences, University "Magna-Graecia" of Catanzaro, 88100 Catanzaro, Italy
| | - Giuseppe Coppolino
- Nephrology and Dialysis Unit, University "Magna-Graecia" of Catanzaro, 88100 Catanzaro, Italy
- Department of Health Sciences, University "Magna-Graecia" of Catanzaro, 88100 Catanzaro, Italy
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Obradovic M, Sudar-Milovanovic E, Gluvic Z, Banjac K, Rizzo M, Isenovic ER. The Na +/K +-ATPase: A potential therapeutic target in cardiometabolic diseases. Front Endocrinol (Lausanne) 2023; 14:1150171. [PMID: 36926029 PMCID: PMC10011626 DOI: 10.3389/fendo.2023.1150171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 02/14/2023] [Indexed: 03/08/2023] Open
Abstract
Cardiometabolic diseases (CMD) are a direct consequence of modern living and contribute to the development of multisystem diseases such as cardiovascular diseases and diabetes mellitus (DM). CMD has reached epidemic proportions worldwide. A sodium pump (Na+/K+-ATPase) is found in most eukaryotic cells' membrane and controls many essential cellular functions directly or indirectly. This ion transporter and its isoforms are important in the pathogenesis of some pathological processes, including CMD. The structure and function of Na+/K+-ATPase, its expression and distribution in tissues, and its interactions with known ligands such as cardiotonic steroids and other suspected endogenous regulators are discussed in this review. In addition, we reviewed recent literature data related to the involvement of Na+/K+-ATPase activity dysfunction in CMD, focusing on the Na+/K+-ATPase as a potential therapeutic target in CMD.
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Affiliation(s)
- Milan Obradovic
- Department of Radiobiology and Molecular Genetics, “VINČA“ Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Emina Sudar-Milovanovic
- Department of Radiobiology and Molecular Genetics, “VINČA“ Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Zoran Gluvic
- University Clinical-Hospital Centre Zemun-Belgrade, Clinic of Internal medicine, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Katarina Banjac
- Department of Radiobiology and Molecular Genetics, “VINČA“ Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Manfredi Rizzo
- School of Medicine, Promise Department, University of Palermo, Palermo, Italy
- *Correspondence: Manfredi Rizzo,
| | - Esma R. Isenovic
- Department of Radiobiology and Molecular Genetics, “VINČA“ Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade, Belgrade, Serbia
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Lamichhane S, Mohammed CJ, Haller ST, Kennedy DJ, Isailovic D. Quantification of Cardiotonic Steroids Potentially Regulated by Paraoxonase 3 in a Rat Model of Chronic Kidney Disease Using UHPLC-Orbitrap-MS. Int J Mol Sci 2022; 23:ijms232113565. [PMID: 36362352 PMCID: PMC9654389 DOI: 10.3390/ijms232113565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/28/2022] [Accepted: 11/02/2022] [Indexed: 11/09/2022] Open
Abstract
Endogenous cardiotonic steroids (CTSs), such as telocinobufagin (TCB) and marinobufagin (MBG) contain a lactone moiety critical to their binding and signaling through the Na+/K+-ATPase. Their concentrations elevate in response to sodium intake and under volume-expanded conditions. Paraoxonase 3 (PON3) is an enzyme that can hydrolyze lactone substrates. Here, we examine the role of PON3 in regulating CTS levels in a rat model of chronic kidney diseases (CKD). TCB and MBG were extracted from rat urine samples, and the analyses were carried out using ultra-high pressure liquid chromatography−Orbitrap-mass spectrometry (UHPLC-Orbitrap-MS). Ten-week-old Dahl salt-sensitive wild type (SS-WT) and Dahl salt-sensitive PON3 knockout (SS-PON3 KO) rats were maintained on a high-salt diet (8% NaCl) for 8 weeks to initiate salt-sensitive hypertensive renal disease characteristic of this model. CTS extraction recovery from urine >80% was achieved. For animals maintained on a normal chow diet, the baseline amount of TCB excreted in 24 h urine of SS-PON3 KO rats (6.08 ± 1.47 ng/24 h; or 15.09 ± 3.25 pmol) was significantly higher than for SS-WT rats (1.48 ± 0.69 ng/24 h; or 3.67 ± 1.54 pmol, p < 0.05). Similarly, for the same animals, the amount of excreted MBG was higher in the urine of SS-PON3 KO rats (4.74 ± 1.30 ng/24 h versus 1.03 ± 0.25 ng/24 h in SS-WT; or 11.83 ± 2.91 pmol versus 2.57 ± 0.56 pmol in SS-WT, p < 0.05). For animals on a high-salt diet, the SS-PON3 KO rats had significantly increased levels of TCB (714.52 ± 79.46 ng/24 h; or 1774.85 ± 175.55 pmol) compared to SS-WT control (343.84 ± 157.54 ng/24 h; or 854.09 ± 350.02 pmol, p < 0.05), and comparatively higher levels of MBG were measured for SS-PON3 KO (225.55 ± 82.61 ng/24 h; or 563.19 ± 184.5 pmol) versus SS-WT (157.56 ± 85.53 ng/24 h; or 393.43 ± 191.01 pmol, p > 0.05) rats. These findings suggest that the presence and absence of PON3 dramatically affect the level of endogenous CTSs, indicating its potential role in CTS regulation.
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Affiliation(s)
- Sabitri Lamichhane
- Department of Chemistry and Biochemistry, University of Toledo, Toledo, OH 43606, USA
| | - Chrysan J. Mohammed
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, USA
| | - Steven T. Haller
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, USA
| | - David J. Kennedy
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, USA
- Correspondence: (D.J.K.); (D.I.); Tel.: +1+419-383-6822 (D.J.K.); +1+419-530-5523 (D.I.)
| | - Dragan Isailovic
- Department of Chemistry and Biochemistry, University of Toledo, Toledo, OH 43606, USA
- Correspondence: (D.J.K.); (D.I.); Tel.: +1+419-383-6822 (D.J.K.); +1+419-530-5523 (D.I.)
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Stevens TW, Khalaf FK, Soehnlen S, Hegde P, Storm K, Meenakshisundaram C, Dworkin LD, Malhotra D, Haller ST, Kennedy DJ, Dube P. Dirty Jobs: Macrophages at the Heart of Cardiovascular Disease. Biomedicines 2022; 10:biomedicines10071579. [PMID: 35884884 PMCID: PMC9312498 DOI: 10.3390/biomedicines10071579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 06/25/2022] [Accepted: 06/28/2022] [Indexed: 12/24/2022] Open
Abstract
Cardiovascular disease (CVD) is one of the greatest public health concerns and is the leading cause of morbidity and mortality in the United States and worldwide. CVD is a broad yet complex term referring to numerous heart and vascular conditions, all with varying pathologies. Macrophages are one of the key factors in the development of these conditions. Macrophages play diverse roles in the maintenance of cardiovascular homeostasis, and an imbalance of these mechanisms contributes to the development of CVD. In the current review, we provide an in-depth analysis of the diversity of macrophages, their roles in maintaining tissue homeostasis within the heart and vasculature, and the mechanisms through which imbalances in homeostasis may lead to CVD. Through this review, we aim to highlight the potential importance of macrophages in the identification of preventative, diagnostic, and therapeutic strategies for patients with CVD.
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Affiliation(s)
- Travis W. Stevens
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43606, USA; (T.W.S.); (F.K.K.); (S.S.); (P.H.); (K.S.); (C.M.); (L.D.D.); (D.M.); (S.T.H.)
| | - Fatimah K. Khalaf
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43606, USA; (T.W.S.); (F.K.K.); (S.S.); (P.H.); (K.S.); (C.M.); (L.D.D.); (D.M.); (S.T.H.)
- Department of Clinical Pharmacy, University of Alkafeel, Najaf 54001, Iraq
| | - Sophia Soehnlen
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43606, USA; (T.W.S.); (F.K.K.); (S.S.); (P.H.); (K.S.); (C.M.); (L.D.D.); (D.M.); (S.T.H.)
| | - Prajwal Hegde
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43606, USA; (T.W.S.); (F.K.K.); (S.S.); (P.H.); (K.S.); (C.M.); (L.D.D.); (D.M.); (S.T.H.)
| | - Kyle Storm
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43606, USA; (T.W.S.); (F.K.K.); (S.S.); (P.H.); (K.S.); (C.M.); (L.D.D.); (D.M.); (S.T.H.)
| | - Chandramohan Meenakshisundaram
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43606, USA; (T.W.S.); (F.K.K.); (S.S.); (P.H.); (K.S.); (C.M.); (L.D.D.); (D.M.); (S.T.H.)
| | - Lance D. Dworkin
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43606, USA; (T.W.S.); (F.K.K.); (S.S.); (P.H.); (K.S.); (C.M.); (L.D.D.); (D.M.); (S.T.H.)
| | - Deepak Malhotra
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43606, USA; (T.W.S.); (F.K.K.); (S.S.); (P.H.); (K.S.); (C.M.); (L.D.D.); (D.M.); (S.T.H.)
| | - Steven T. Haller
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43606, USA; (T.W.S.); (F.K.K.); (S.S.); (P.H.); (K.S.); (C.M.); (L.D.D.); (D.M.); (S.T.H.)
| | - David J. Kennedy
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43606, USA; (T.W.S.); (F.K.K.); (S.S.); (P.H.); (K.S.); (C.M.); (L.D.D.); (D.M.); (S.T.H.)
- Correspondence: (D.J.K.); (P.D.)
| | - Prabhatchandra Dube
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43606, USA; (T.W.S.); (F.K.K.); (S.S.); (P.H.); (K.S.); (C.M.); (L.D.D.); (D.M.); (S.T.H.)
- Correspondence: (D.J.K.); (P.D.)
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Patel N, Yaqoob MM, Aksentijevic D. Cardiac metabolic remodelling in chronic kidney disease. Nat Rev Nephrol 2022; 18:524-537. [DOI: 10.1038/s41581-022-00576-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/14/2022] [Indexed: 11/09/2022]
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8
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Khalaf FK, Mohammed CJ, Dube P, Connolly JA, Lad A, Ashraf UM, Breidenbach JD, Su RC, Kleinhenz AL, Malhotra D, Gohara AF, Haller ST, Kennedy DJ. Paraoxonase-1 Regulation of Renal Inflammation and Fibrosis in Chronic Kidney Disease. Antioxidants (Basel) 2022; 11:antiox11050900. [PMID: 35624764 PMCID: PMC9137734 DOI: 10.3390/antiox11050900] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 04/27/2022] [Accepted: 04/27/2022] [Indexed: 12/04/2022] Open
Abstract
Papraoxonase-1 (PON1) is a hydrolytic lactonase enzyme that is synthesized in the liver and circulates attached to high-density lipoproteins (HDL). Clinical studies have demonstrated an association between diminished PON-1 and the progression of chronic kidney disease (CKD). However, whether decreased PON-1 is mechanistically linked to renal injury is unknown. We tested the hypothesis that the absence of PON-1 is mechanistically linked to the progression of renal inflammation and injury in CKD. Experiments were performed on control Dahl salt-sensitive rats (SSMcwi, hereafter designated SS rats) and Pon1 knock-out rats (designated SS-Pon1em1Mcwi, hereafter designated SS-PON-1 KO rats) generated by injecting a CRISPR targeting the sequence into SSMcwi rat embryos. The resulting mutation is a 7 bp frameshift insertion in exon 4 of the PON-1 gene. First, to examine the renal protective role of PON-1 in settings of CKD, ten-week-old, age-matched male rats were maintained on a high-salt diet (8% NaCl) for up to 5 weeks to initiate the salt-sensitive hypertensive renal disease characteristic of this model. We found that SS-PON-1 KO rats demonstrated several hallmarks of increased renal injury vs. SS rats including increased renal fibrosis, sclerosis, and tubular injury. SS-PON-1 KO also demonstrated increased recruitment of immune cells in the renal interstitium, as well as increased expression of inflammatory genes compared to SS rats (all p < 0.05). SS-PON-1 KO rats also showed a significant (p < 0.05) decline in renal function and increased renal oxidative stress compared to SS rats, despite no differences in blood pressure between the two groups. These findings suggest a new role for PON-1 in regulating renal inflammation and fibrosis in the setting of chronic renal disease independent of blood pressure.
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Affiliation(s)
- Fatimah K. Khalaf
- Department of Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43606, USA; (F.K.K.); (C.J.M.); (P.D.); (J.A.C.); (A.L.); (U.M.A.); (J.D.B.); (R.C.S.); (A.L.K.); (D.M.); (A.F.G.); (S.T.H.)
- Department of Clinical Pharmacy, University of Alkafeel, Najaf 54001, Iraq
| | - Chrysan J. Mohammed
- Department of Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43606, USA; (F.K.K.); (C.J.M.); (P.D.); (J.A.C.); (A.L.); (U.M.A.); (J.D.B.); (R.C.S.); (A.L.K.); (D.M.); (A.F.G.); (S.T.H.)
| | - Prabhatchandra Dube
- Department of Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43606, USA; (F.K.K.); (C.J.M.); (P.D.); (J.A.C.); (A.L.); (U.M.A.); (J.D.B.); (R.C.S.); (A.L.K.); (D.M.); (A.F.G.); (S.T.H.)
| | - Jacob A. Connolly
- Department of Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43606, USA; (F.K.K.); (C.J.M.); (P.D.); (J.A.C.); (A.L.); (U.M.A.); (J.D.B.); (R.C.S.); (A.L.K.); (D.M.); (A.F.G.); (S.T.H.)
| | - Apurva Lad
- Department of Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43606, USA; (F.K.K.); (C.J.M.); (P.D.); (J.A.C.); (A.L.); (U.M.A.); (J.D.B.); (R.C.S.); (A.L.K.); (D.M.); (A.F.G.); (S.T.H.)
| | - Usman M. Ashraf
- Department of Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43606, USA; (F.K.K.); (C.J.M.); (P.D.); (J.A.C.); (A.L.); (U.M.A.); (J.D.B.); (R.C.S.); (A.L.K.); (D.M.); (A.F.G.); (S.T.H.)
| | - Joshua D. Breidenbach
- Department of Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43606, USA; (F.K.K.); (C.J.M.); (P.D.); (J.A.C.); (A.L.); (U.M.A.); (J.D.B.); (R.C.S.); (A.L.K.); (D.M.); (A.F.G.); (S.T.H.)
| | - Robin C. Su
- Department of Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43606, USA; (F.K.K.); (C.J.M.); (P.D.); (J.A.C.); (A.L.); (U.M.A.); (J.D.B.); (R.C.S.); (A.L.K.); (D.M.); (A.F.G.); (S.T.H.)
| | - Andrew L. Kleinhenz
- Department of Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43606, USA; (F.K.K.); (C.J.M.); (P.D.); (J.A.C.); (A.L.); (U.M.A.); (J.D.B.); (R.C.S.); (A.L.K.); (D.M.); (A.F.G.); (S.T.H.)
| | - Deepak Malhotra
- Department of Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43606, USA; (F.K.K.); (C.J.M.); (P.D.); (J.A.C.); (A.L.); (U.M.A.); (J.D.B.); (R.C.S.); (A.L.K.); (D.M.); (A.F.G.); (S.T.H.)
| | - Amira F. Gohara
- Department of Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43606, USA; (F.K.K.); (C.J.M.); (P.D.); (J.A.C.); (A.L.); (U.M.A.); (J.D.B.); (R.C.S.); (A.L.K.); (D.M.); (A.F.G.); (S.T.H.)
| | - Steven T. Haller
- Department of Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43606, USA; (F.K.K.); (C.J.M.); (P.D.); (J.A.C.); (A.L.); (U.M.A.); (J.D.B.); (R.C.S.); (A.L.K.); (D.M.); (A.F.G.); (S.T.H.)
| | - David J. Kennedy
- Department of Medicine, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43606, USA; (F.K.K.); (C.J.M.); (P.D.); (J.A.C.); (A.L.); (U.M.A.); (J.D.B.); (R.C.S.); (A.L.K.); (D.M.); (A.F.G.); (S.T.H.)
- Correspondence: ; Tel.: +1-419-383-6822
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9
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Bolignano D, De Rosa S, Greco M, Presta P, Patella G, Crugliano G, Sabatino J, Strangio A, Romano LR, Comi A, Cianfrone P, Andreucci M, Dragone F, Indolfi C, Foti DP, Coppolino G. Marinobufagenin, left ventricular geometry and cardiac dysfunction in end-stage kidney disease patients. Int Urol Nephrol 2022; 54:2581-2589. [PMID: 35274285 DOI: 10.1007/s11255-022-03161-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 02/23/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE Left ventricular hypertrophy (LVH) is remarkably prevalent among end-stage kidney disease (ESKD) on chronic dialysis and has a strong prognostic value for adverse outcomes. In experimental models, the endogenous cardiotonic steroid Marinobufagenin (MBG) promotes cardiac hypertrophy and accelerates uremic cardiomyopathy. In this study, we investigated the possible relationships between MBG, LV geometry and cardiac dysfunction in a clinical setting of ESKD. METHODS Plasmatic MBG was measured in 46 prevalent ESKD patients (n = 30 HD, n = 16 PD) together with a thorough laboratory, clinical, bioimpedance and echocardiography assessment. Different patterns of LV geometry were defined by left ventricular mass index (LVMi) and ventricular morphology. Diastolic dysfunction was diagnosed by the ASE/EACVI criteria. RESULTS MBG levels were significantly higher in ESKD patients than in healthy controls (p = 0.001) and more elevated in PD than in HD (p = 0.02). At multivariate analyses, E/e' (β = 0.38; p = 0.009) and LVMi (β = 0.42; p = 0.02) remained the sole independent predictors of MBG. A statistically significant trend in MBG levels (p = 0.01) was noticed across different patterns of LV geometry, with the highest values found in eccentric LVH. MBG levels were higher in the presence of diastolic dysfunction (p = 0.01) and this substance displayed a remarkable diagnostic capacity in distinguish patients with normal LV geometry, LV hypertrophy and, particularly, eccentric LVH (AUC 0.888; p < 0.0001) and diastolic dysfunction (AUC 0.79; p = 0.001). CONCLUSIONS Deranged plasma MBG levels in ESKD patients on chronic dialysis reflect alterations in LV structure and function. MBG may, thus, candidate as a novel biomarker for improving cardiac assessment in this high-risk population.
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Affiliation(s)
- Davide Bolignano
- Nephrology and Dialysis Unit, Magna Graecia University of Catanzaro, Catanzaro, Italy. .,Department of Medical and Surgical Sciences-Renal Unit, Magna Graecia University of Catanzaro, Campus Salvatore Venuta, Viale Europa, 88100, Catanzaro, Italy.
| | - Salvatore De Rosa
- Department of Medical and Surgical Sciences-Renal Unit, Magna Graecia University of Catanzaro, Campus Salvatore Venuta, Viale Europa, 88100, Catanzaro, Italy.,Cardiovascular Research Center, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | - Marta Greco
- Clinical Pathology Lab, Magna Graecia University of Catanzaro, Catanzaro, Italy.,Department of Health Sciences, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | - Pierangela Presta
- Nephrology and Dialysis Unit, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | - Gemma Patella
- Nephrology and Dialysis Unit, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | - Giuseppina Crugliano
- Nephrology and Dialysis Unit, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | - Jolanda Sabatino
- Department of Medical and Surgical Sciences-Renal Unit, Magna Graecia University of Catanzaro, Campus Salvatore Venuta, Viale Europa, 88100, Catanzaro, Italy.,Cardiovascular Research Center, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | - Antonio Strangio
- Department of Medical and Surgical Sciences-Renal Unit, Magna Graecia University of Catanzaro, Campus Salvatore Venuta, Viale Europa, 88100, Catanzaro, Italy
| | - Letizia Rosa Romano
- Department of Medical and Surgical Sciences-Renal Unit, Magna Graecia University of Catanzaro, Campus Salvatore Venuta, Viale Europa, 88100, Catanzaro, Italy
| | - Alessandro Comi
- Nephrology and Dialysis Unit, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | - Paola Cianfrone
- Nephrology and Dialysis Unit, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | - Michele Andreucci
- Nephrology and Dialysis Unit, Magna Graecia University of Catanzaro, Catanzaro, Italy.,Department of Health Sciences, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | - Francesco Dragone
- Clinical Pathology Lab, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | - Ciro Indolfi
- Department of Medical and Surgical Sciences-Renal Unit, Magna Graecia University of Catanzaro, Campus Salvatore Venuta, Viale Europa, 88100, Catanzaro, Italy.,Cardiovascular Research Center, Magna Graecia University of Catanzaro, Catanzaro, Italy.,Mediterranea Cardiocentro, Naples, Italy
| | - Daniela Patrizia Foti
- Clinical Pathology Lab, Magna Graecia University of Catanzaro, Catanzaro, Italy.,Department of Experimental and Clinical Medicine, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | - Giuseppe Coppolino
- Nephrology and Dialysis Unit, Magna Graecia University of Catanzaro, Catanzaro, Italy.,Department of Health Sciences, Magna Graecia University of Catanzaro, Catanzaro, Italy
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10
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El-Salam MA, Abdelrahman T, Youssef M, Osama F, Youssef N. Evaluation of Asymmetric Dimethylarginine Serum Level and Left Ventricular Function by 2D Speckle Tracking Echocardiography in Children on Regular Hemodialysis. SAUDI JOURNAL OF KIDNEY DISEASES AND TRANSPLANTATION 2022; 33:259-271. [PMID: 37417178 DOI: 10.4103/1319-2442.379024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/08/2023] Open
Abstract
Cardiovascular disease is the leading cause of morbidity and mortality in children with chronic kidney disease. Asymmetric dimethylarginine (ADMA) is thought to be related to chronic kidney disease patients' adverse cardiovascular effects. Our study is to assess ADMA concentrations in children on hemodialysis (HD) as a marker of cardiovascular risk and detect the relation to the left ventricular (LV) function by traditional and speckled tracking echo. Forty children with end-stage renal disease on regular HD were enrolled in the study and selected from the nephrology HD unit of Al-Zahraa Hospital, Al-Azhar University. Another group of 40 healthy children matches age and sex with the patient's group as a control. ADMA serum level, traditional echo, and tissue Doppler imaging spackled tracking were performed to assess: LV functions for both groups in the same line with the routine laboratory investigations. Moreover, bioimpedance was assessed after the HD session. Children on regular HD have a significantly higher (ADMA) serum level compared to their controls; the median is (72.5 ng/mL) and (25 ng/mL), respectively (P = 0.001) and a significant increase in high-sensitivity C-reactive protein and the median is (3.6 ng/mL) and (2.5 ng/mL), respectively (P = 0.001). Moreover, conventional echo detects 27 (67.5%) patients out of 40 had an impaired LV function; meanwhile, 33 (82.5%) had a global LV strain (LV GLS) detected by 2D (Speckle echo), a negative correlation between LV ejection fraction with serum (urea, cholesterol, and triglyceride) and a positive correlation between ADMA and LV systolic diameter. LV GLS (Speckle echo) is negatively correlated with LV end-diastolic diameter, LV end-systolic diameter and positively correlated with LV inter ventricular septum in diastole and reduced average systolic velocity (ml). The sensitivity and specificity of (ADMA), high-sensitivity C-reactive protein (hs-CRP), traditional, and Speckle echo for early left ventricular (LV) dysfunction were 92.50, 92, and 67.50, 97 and 67.50, 90.00, and 80.00, 92, respectively. An ADMA emerges as a sensitive and specific marker for early LV dysfunction in children on hemodialysis (HD); drugs targeting ADMA isessential in the future direction after clinical approval, to avoid early LV changes, furthermore (Speckle echo) is superior to the traditional echo for early detection of LV changes in chronic kidney disease (CKD) children.
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Affiliation(s)
- Manal Abd El-Salam
- Department of Pediatrics, Faculty of Medicine (For Girls), Al-Azhar University, Cairo, Egypt
| | - Tagreed Abdelrahman
- Department of Cardiology, Faculty of Medicine (For Girls), Al-Azhar University, Cairo, Egypt
| | - Maha Youssef
- Department of Pediatrics, Faculty of Medicine (For Girls), Al-Azhar University, Cairo, Egypt
| | - Fatma Osama
- Department of Pediatrics, Faculty of Medicine (For Girls), Al-Azhar University, Cairo, Egypt
| | - Nadia Youssef
- Department of Clinical Pathology, National Heart Institute, Cairo, Egypt
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11
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With a grain of salt: Sodium elevation and metabolic remodelling in heart failure. J Mol Cell Cardiol 2021; 161:106-115. [PMID: 34371034 PMCID: PMC7611640 DOI: 10.1016/j.yjmcc.2021.08.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 07/09/2021] [Accepted: 08/03/2021] [Indexed: 12/14/2022]
Abstract
Elevated intracellular Na (Nai) and metabolic impairment are interrelated pathophysiological features of the failing heart (HF). There have been a number of studies showing that myocardial sodium elevation subtly affects mitochondrial function. During contraction, mitochondrial calcium (Camito) stimulates a variety of TCA cycle enzymes, thereby providing reducing equivalents to maintain ATP supply. Nai elevation has been shown to impact Camito; however, whether metabolic remodelling in HF is caused by increased Nai has only been recently demonstrated. This novel insight may help to elucidate the contribution of metabolic remodelling in the pathophysiology of HF, the lack of efficacy of current HF therapies and a rationale for the development of future metabolism-targeting treatments. Here we review the relationship between Na pump inhibition, elevated Nai, and altered metabolic profile in the context of HF and their link to metabolic (in)flexibility and mitochondrial reprogramming.
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12
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Łabno-Kirszniok K, Kujawa-Szewieczek A, Wiecek A, Piecha G. The Effects of Short-Term Changes in Sodium Intake on Plasma Marinobufagenin Levels in Patients with Primary Salt-Sensitive and Salt-Insensitive Hypertension. Nutrients 2021; 13:nu13051502. [PMID: 33946894 PMCID: PMC8147121 DOI: 10.3390/nu13051502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 04/22/2021] [Accepted: 04/26/2021] [Indexed: 11/25/2022] Open
Abstract
Increased marinobufagenin (MBG) synthesis has been suggested in response to high dietary salt intake. The aim of this study was to determine the effects of short-term changes in sodium intake on plasma MBG levels in patients with primary salt-sensitive and salt-insensitive hypertension. In total, 51 patients with primary hypertension were evaluated during acute sodium restriction and sodium loading. Plasma or serum concentrations of MBG, natriuretic pro-peptides, aldosterone, sodium, potassium, as well as hematocrit (Hct) value, plasma renin activity (PRA) and urinary sodium and potassium excretion were measured. Ambulatory blood pressure monitoring (ABPM) and echocardiography were performed at baseline. In salt-sensitive patients with primary hypertension plasma MBG correlated positively with diastolic blood pressure (ABPM) and serum NT-proANP concentration at baseline and with serum NT-proANP concentration after dietary sodium restriction. In this subgroup plasma MBG concentration decreased during sodium restriction, and a parallel increase of PRA was observed. Acute salt loading further decreased plasma MBG concentration in salt-sensitive subjects in contrast to salt insensitive patients. No correlation was found between plasma MBG concentration and left ventricular mass index. In conclusion, in salt-sensitive hypertensive patients plasma MBG concentration correlates with 24-h diastolic blood pressure and dietary sodium restriction reduces plasma MBG levels. Decreased MBG secretion in response to acute salt loading may play an important role in the pathogenesis of salt sensitivity.
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Affiliation(s)
| | | | | | - Grzegorz Piecha
- Correspondence: ; Tel.: +48-322-591-429; Fax: +48-322-553-726
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13
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Abstract
The health burden of heart failure with preserved ejection fraction is increasingly recognized. Despite improvements in diagnostic algorithms and established knowledge on the clinical trajectory, effective treatment options for heart failure with preserved ejection fraction remain limited, mainly because of the high mechanistic heterogeneity. Diagnostic scores, big data, and phenomapping categorization are proposed as key steps needed for progress. In the meantime, advancements in imaging techniques combined to high-fidelity pressure signaling analysis have uncovered right ventricular dysfunction as a mediator of heart failure with preserved ejection fraction progression and as major independent determinant of poor outcome. This review summarizes the current understanding of the pathophysiology of right ventricular dysfunction in heart failure with preserved ejection fraction covering the different right heart phenotypes and offering perspectives on new treatments targeting the right ventricle in its function and geometry.
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Affiliation(s)
- Marco Guazzi
- Department of Biological Sciences, University of Milano, Italy (M.G.).,Cardiology Division, San Paolo Hospital, Italy (M.G.)
| | - Robert Naeije
- Erasme Hospital, Free University of Brussels, Belgium (R.N.)
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14
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Marck PV, Pessoa MT, Xu Y, Kutz LC, Collins DM, Yan Y, King C, Wang X, Duan Q, Cai L, Xie JX, Lingrel JB, Xie Z, Tian J, Pierre SV. Cardiac Oxidative Signaling and Physiological Hypertrophy in the Na/K-ATPase α1 s/sα2 s/s Mouse Model of High Affinity for Cardiotonic Steroids. Int J Mol Sci 2021; 22:ijms22073462. [PMID: 33801629 PMCID: PMC8036649 DOI: 10.3390/ijms22073462] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/18/2021] [Accepted: 03/23/2021] [Indexed: 11/25/2022] Open
Abstract
The Na/K-ATPase is the specific receptor for cardiotonic steroids (CTS) such as ouabain and digoxin. At pharmacological concentrations used in the treatment of cardiac conditions, CTS inhibit the ion-pumping function of Na/K-ATPase. At much lower concentrations, in the range of those reported for endogenous CTS in the blood, they stimulate hypertrophic growth of cultured cardiac myocytes through initiation of a Na/K-ATPase-mediated and reactive oxygen species (ROS)-dependent signaling. To examine a possible effect of endogenous concentrations of CTS on cardiac structure and function in vivo, we compared mice expressing the naturally resistant Na/K-ATPase α1 and age-matched mice genetically engineered to express a mutated Na/K-ATPase α1 with high affinity for CTS. In this model, total cardiac Na/K-ATPase activity, α1, α2, and β1 protein content remained unchanged, and the cardiac Na/K-ATPase dose–response curve to ouabain shifted to the left as expected. In males aged 3–6 months, increased α1 sensitivity to CTS resulted in a significant increase in cardiac carbonylated protein content, suggesting that ROS production was elevated. A moderate but significant increase of about 15% of the heart-weight-to-tibia-length ratio accompanied by an increase in the myocyte cross-sectional area was detected. Echocardiographic analyses did not reveal any change in cardiac function, and there was no fibrosis or re-expression of the fetal gene program. RNA sequencing analysis indicated that pathways related to energy metabolism were upregulated, while those related to extracellular matrix organization were downregulated. Consistent with a functional role of the latter, an angiotensin-II challenge that triggered fibrosis in the α1r/rα2s/s mouse failed to do so in the α1s/sα2s/s. Taken together, these results are indicative of a link between circulating CTS, Na/K-ATPase α1, ROS, and physiological cardiac hypertrophy in mice under baseline laboratory conditions.
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Affiliation(s)
- Pauline V. Marck
- Marshall Institute for Interdisciplinary Research, Huntington, WV 25703, USA; (P.V.M.); (M.T.P.); (Y.X.); (L.C.K.); (D.M.C.); (C.K.); (X.W.); (L.C.); (Z.X.); (J.T.)
| | - Marco T. Pessoa
- Marshall Institute for Interdisciplinary Research, Huntington, WV 25703, USA; (P.V.M.); (M.T.P.); (Y.X.); (L.C.K.); (D.M.C.); (C.K.); (X.W.); (L.C.); (Z.X.); (J.T.)
| | - Yunhui Xu
- Marshall Institute for Interdisciplinary Research, Huntington, WV 25703, USA; (P.V.M.); (M.T.P.); (Y.X.); (L.C.K.); (D.M.C.); (C.K.); (X.W.); (L.C.); (Z.X.); (J.T.)
| | - Laura C. Kutz
- Marshall Institute for Interdisciplinary Research, Huntington, WV 25703, USA; (P.V.M.); (M.T.P.); (Y.X.); (L.C.K.); (D.M.C.); (C.K.); (X.W.); (L.C.); (Z.X.); (J.T.)
| | - Dominic M. Collins
- Marshall Institute for Interdisciplinary Research, Huntington, WV 25703, USA; (P.V.M.); (M.T.P.); (Y.X.); (L.C.K.); (D.M.C.); (C.K.); (X.W.); (L.C.); (Z.X.); (J.T.)
| | - Yanling Yan
- Department of Biomedical Sciences, Marshall University Joan C. Edwards School of Medicine, Huntington, WV 25755, USA;
| | - Cierra King
- Marshall Institute for Interdisciplinary Research, Huntington, WV 25703, USA; (P.V.M.); (M.T.P.); (Y.X.); (L.C.K.); (D.M.C.); (C.K.); (X.W.); (L.C.); (Z.X.); (J.T.)
| | - Xiaoliang Wang
- Marshall Institute for Interdisciplinary Research, Huntington, WV 25703, USA; (P.V.M.); (M.T.P.); (Y.X.); (L.C.K.); (D.M.C.); (C.K.); (X.W.); (L.C.); (Z.X.); (J.T.)
| | - Qiming Duan
- Gladstone Institute of Cardiovascular Disease, San Francisco, CA 94158, USA;
| | - Liquan Cai
- Marshall Institute for Interdisciplinary Research, Huntington, WV 25703, USA; (P.V.M.); (M.T.P.); (Y.X.); (L.C.K.); (D.M.C.); (C.K.); (X.W.); (L.C.); (Z.X.); (J.T.)
| | - Jeffrey X. Xie
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA;
| | - Jerry B. Lingrel
- Department of Molecular Genetics, Biochemistry and Microbiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA;
| | - Zijian Xie
- Marshall Institute for Interdisciplinary Research, Huntington, WV 25703, USA; (P.V.M.); (M.T.P.); (Y.X.); (L.C.K.); (D.M.C.); (C.K.); (X.W.); (L.C.); (Z.X.); (J.T.)
| | - Jiang Tian
- Marshall Institute for Interdisciplinary Research, Huntington, WV 25703, USA; (P.V.M.); (M.T.P.); (Y.X.); (L.C.K.); (D.M.C.); (C.K.); (X.W.); (L.C.); (Z.X.); (J.T.)
| | - Sandrine V. Pierre
- Marshall Institute for Interdisciplinary Research, Huntington, WV 25703, USA; (P.V.M.); (M.T.P.); (Y.X.); (L.C.K.); (D.M.C.); (C.K.); (X.W.); (L.C.); (Z.X.); (J.T.)
- Correspondence: ; Tel.: +1-(304)-696-3505
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15
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Silva CID, Gonçalves-de-Albuquerque CF, Moraes BPTD, Garcia DG, Burth P. Na/K-ATPase: Their role in cell adhesion and migration in cancer. Biochimie 2021; 185:1-8. [PMID: 33713729 DOI: 10.1016/j.biochi.2021.03.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 03/03/2021] [Accepted: 03/04/2021] [Indexed: 12/18/2022]
Abstract
Na/K-ATPase (NKA) is a p-type transmembrane enzyme formed by three different subunits (α, β, and γ gamma). Primarily responsible for transporting sodium and potassium through the cell membrane, it also plays a critical role in intracellular signaling. The activation of diverse intracellular pathways may trigger cell death, survival, or even cell proliferation. Changes in the NKA functions or expression in isoforms subunits impact pathological conditions, such as cancer. The NKA function affects cell adhesion, motility, and migration, which are different in the physiological and pathological states. All enzyme subunits take part in the cell adhesion process, with the β subunit being the most studied. Thus, herein we aim to highlight NKA' central role in cell adhesion, motility, and migration in cancer cells.
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Affiliation(s)
- Camila Ignácio da Silva
- Laboratório de Enzimologia e Sinalização Celular, Departamento de Biologia Celular e Molecular, Instituto de Biologia, Universidade Federal Fluminense, Niterói, Brazil; Pós-Graduação em Ciências e Biotecnologia Universidade Federal Fluminense, Niterói, Brazil
| | - Cassiano Felippe Gonçalves-de-Albuquerque
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil; Laboratorio de Imunofarmacologia, Departamento de Bioquímica, Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
| | - Bianca Portugal Tavares de Moraes
- Laboratorio de Imunofarmacologia, Departamento de Bioquímica, Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Diogo Gomes Garcia
- Laboratório de Neurociências Translacional, Programa de Pós-Graduação em Neurologia, Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Patrícia Burth
- Laboratório de Enzimologia e Sinalização Celular, Departamento de Biologia Celular e Molecular, Instituto de Biologia, Universidade Federal Fluminense, Niterói, Brazil; Pós-Graduação em Ciências e Biotecnologia Universidade Federal Fluminense, Niterói, Brazil.
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16
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Karpov AA, Anikin NA, Mihailova AM, Smirnov SS, Vaulina DD, Shilenko LA, Ivkin DY, Bagrov AY, Moiseeva OM, Galagudza MM. Model of Chronic Thromboembolic Pulmonary Hypertension in Rats Caused by Repeated Intravenous Administration of Partially Biodegradable Sodium Alginate Microspheres. Int J Mol Sci 2021; 22:ijms22031149. [PMID: 33498971 PMCID: PMC7865986 DOI: 10.3390/ijms22031149] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/18/2021] [Accepted: 01/19/2021] [Indexed: 12/23/2022] Open
Abstract
Chronic thromboembolic pulmonary hypertension (CTEPH) is a rare and life-threatening complication of pulmonary embolism. As existing animal models of CTEPH do not fully recapitulate complex disease pathophysiology, we report a new rat model for CTEPH evoked by repetitive embolization of the distal pulmonary artery branches with partially biodegradable alginate microspheres (MSs). MSs (180 ± 28 μm) were intravenously administered eight times at 4-day intervals; control animals received saline. The validity of the model was confirmed using transthoracic echocardiography, exercise testing, catheterization of the right ventricle, and histological examination of the lung and heart. The animals in the CTEPH group demonstrated a stable increase in right ventricular systolic pressure (RVSP) and decreased exercise tolerance. Histopathological examination revealed advanced medial hypertrophy in the small pulmonary arteries associated with fibrosis. The diameter of the main pulmonary artery was significantly larger in the CTEPH group than in the control group. Marinobufagenin and endothelin-1 serum levels were significantly elevated in rats with CTEPH. In conclusion, repetitive administration of alginate MSs in rats resulted in CTEPH development characterized by specific lung vasculature remodeling, reduced exercise tolerance, and a persistent rise in RVSP. The developed model can be used for pre-clinical testing of promising drug candidates.
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Affiliation(s)
- Andrei A. Karpov
- Almazov National Medical Research Centre, 197341 St. Petersburg, Russia; (N.A.A.); (A.M.M.); (S.S.S.); (D.D.V.); (L.A.S.); (O.M.M.)
- Correspondence: (A.A.K.); (M.M.G.); Tel.: +7-951-678-7006 (A.A.K.)
| | - Nikita A. Anikin
- Almazov National Medical Research Centre, 197341 St. Petersburg, Russia; (N.A.A.); (A.M.M.); (S.S.S.); (D.D.V.); (L.A.S.); (O.M.M.)
| | - Aleksandra M. Mihailova
- Almazov National Medical Research Centre, 197341 St. Petersburg, Russia; (N.A.A.); (A.M.M.); (S.S.S.); (D.D.V.); (L.A.S.); (O.M.M.)
| | - Sergey S. Smirnov
- Almazov National Medical Research Centre, 197341 St. Petersburg, Russia; (N.A.A.); (A.M.M.); (S.S.S.); (D.D.V.); (L.A.S.); (O.M.M.)
- First Pavlov State Medical University of Saint Petersburg, 197022 St. Petersburg, Russia
| | - Dariya D. Vaulina
- Almazov National Medical Research Centre, 197341 St. Petersburg, Russia; (N.A.A.); (A.M.M.); (S.S.S.); (D.D.V.); (L.A.S.); (O.M.M.)
- N.P. Bechtereva Institute of Human Brain, Russian Academy of Science, 197376 St. Petersburg, Russia
| | - Leonid A. Shilenko
- Almazov National Medical Research Centre, 197341 St. Petersburg, Russia; (N.A.A.); (A.M.M.); (S.S.S.); (D.D.V.); (L.A.S.); (O.M.M.)
- First Pavlov State Medical University of Saint Petersburg, 197022 St. Petersburg, Russia
| | - Dmitry Yu. Ivkin
- Saint Petersburg State Chemical Pharmaceutical University, 197376 St. Petersburg, Russia;
| | - Alexei Y. Bagrov
- Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, 194223 St. Petersburg, Russia;
| | - Olga M. Moiseeva
- Almazov National Medical Research Centre, 197341 St. Petersburg, Russia; (N.A.A.); (A.M.M.); (S.S.S.); (D.D.V.); (L.A.S.); (O.M.M.)
| | - Michael M. Galagudza
- Almazov National Medical Research Centre, 197341 St. Petersburg, Russia; (N.A.A.); (A.M.M.); (S.S.S.); (D.D.V.); (L.A.S.); (O.M.M.)
- Correspondence: (A.A.K.); (M.M.G.); Tel.: +7-951-678-7006 (A.A.K.)
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17
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Wang F, Yuan Q, Chen F, Pang J, Pan C, Xu F, Chen Y. Fundamental Mechanisms of the Cell Death Caused by Nitrosative Stress. Front Cell Dev Biol 2021; 9:742483. [PMID: 34616744 PMCID: PMC8488117 DOI: 10.3389/fcell.2021.742483] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 08/19/2021] [Indexed: 01/08/2023] Open
Abstract
Nitrosative stress, as an important oxygen metabolism disorder, has been shown to be closely associated with cardiovascular diseases, such as myocardial ischemia/reperfusion injury, aortic aneurysm, heart failure, hypertension, and atherosclerosis. Nitrosative stress refers to the joint biochemical reactions of nitric oxide (NO) and superoxide (O2 -) when an oxygen metabolism disorder occurs in the body. The peroxynitrite anion (ONOO-) produced during this process can nitrate several biomolecules, such as proteins, lipids, and DNA, to generate 3-nitrotyrosine (3-NT), which further induces cell death. Among these, protein tyrosine nitration and polyunsaturated fatty acid nitration are the most studied types to date. Accordingly, an in-depth study of the relationship between nitrosative stress and cell death has important practical significance for revealing the pathogenesis and strategies for prevention and treatment of various diseases, particularly cardiovascular diseases. Here, we review the latest research progress on the mechanisms of nitrosative stress-mediated cell death, primarily involving several regulated cell death processes, including apoptosis, autophagy, ferroptosis, pyroptosis, NETosis, and parthanatos, highlighting nitrosative stress as a unique mechanism in cardiovascular diseases.
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Affiliation(s)
- Fulin Wang
- Department of Emergency Medicine, Qilu Hospital, Shandong University, Jinan, China
- Chest Pain Center, Qilu Hospital, Shandong University, Jinan, China
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Qilu Hospital, Shandong University, Jinan, China
- Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Qilu Hospital, Shandong University, Jinan, China
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese Ministry of Health and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital, Shandong University, Jinan, China
| | - Qiuhuan Yuan
- Department of Emergency Medicine, Qilu Hospital, Shandong University, Jinan, China
- Chest Pain Center, Qilu Hospital, Shandong University, Jinan, China
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Qilu Hospital, Shandong University, Jinan, China
- Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Qilu Hospital, Shandong University, Jinan, China
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese Ministry of Health and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital, Shandong University, Jinan, China
| | - Fengying Chen
- Emergency Department, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
- Fengying Chen,
| | - Jiaojiao Pang
- Department of Emergency Medicine, Qilu Hospital, Shandong University, Jinan, China
- Chest Pain Center, Qilu Hospital, Shandong University, Jinan, China
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Qilu Hospital, Shandong University, Jinan, China
- Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Qilu Hospital, Shandong University, Jinan, China
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese Ministry of Health and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital, Shandong University, Jinan, China
| | - Chang Pan
- Department of Emergency Medicine, Qilu Hospital, Shandong University, Jinan, China
- Chest Pain Center, Qilu Hospital, Shandong University, Jinan, China
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Qilu Hospital, Shandong University, Jinan, China
- Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Qilu Hospital, Shandong University, Jinan, China
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese Ministry of Health and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital, Shandong University, Jinan, China
| | - Feng Xu
- Department of Emergency Medicine, Qilu Hospital, Shandong University, Jinan, China
- Chest Pain Center, Qilu Hospital, Shandong University, Jinan, China
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Qilu Hospital, Shandong University, Jinan, China
- Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Qilu Hospital, Shandong University, Jinan, China
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese Ministry of Health and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital, Shandong University, Jinan, China
- *Correspondence: Feng Xu,
| | - Yuguo Chen
- Department of Emergency Medicine, Qilu Hospital, Shandong University, Jinan, China
- Chest Pain Center, Qilu Hospital, Shandong University, Jinan, China
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Qilu Hospital, Shandong University, Jinan, China
- Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Qilu Hospital, Shandong University, Jinan, China
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese Ministry of Health and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital, Shandong University, Jinan, China
- Yuguo Chen,
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Zhang J, Li X, Yu H, Larre I, Dube PR, Kennedy DJ, Tang WHW, Westfall K, Pierre SV, Xie Z, Chen Y. Regulation of Na/K-ATPase expression by cholesterol: isoform specificity and the molecular mechanism. Am J Physiol Cell Physiol 2020; 319:C1107-C1119. [PMID: 32997514 DOI: 10.1152/ajpcell.00083.2020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We have reported that the reduction in plasma membrane cholesterol could decrease cellular Na/K-ATPase α1-expression through a Src-dependent pathway. However, it is unclear whether cholesterol could regulate other Na/K-ATPase α-isoforms and the molecular mechanisms of this regulation are not fully understood. Here we used cells expressing different Na/K-ATPase α isoforms and found that membrane cholesterol reduction by U18666A decreased expression of the α1-isoform but not the α2- or α3-isoform. Imaging analyses showed the cellular redistribution of α1 and α3 but not α2. Moreover, U18666A led to redistribution of α1 to late endosomes/lysosomes, while the proteasome inhibitor blocked α1-reduction by U18666A. These results suggest that the regulation of the Na/K-ATPase α-subunit by cholesterol is isoform specific and α1 is unique in this regulation through the endocytosis-proteasome pathway. Mechanistically, loss-of-Src binding mutation of A425P in α1 lost its capacity for regulation by cholesterol. Meanwhile, gain-of-Src binding mutations in α2 partially restored the regulation. Furthermore, through studies in caveolin-1 knockdown cells, as well as subcellular distribution studies in cell lines with different α-isoforms, we found that Na/K-ATPase, Src, and caveolin-1 worked together for the cholesterol regulation. Taken together, these new findings reveal that the putative Src-binding domain and the intact Na/K-ATPase/Src/caveolin-1 complex are indispensable for the isoform-specific regulation of Na/K-ATPase by cholesterol.
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Affiliation(s)
- Jue Zhang
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, West Virginia.,Blood Research Institute, Versiti, Milwaukee, Wisconsin
| | - Xin Li
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hui Yu
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Isabel Larre
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, West Virginia
| | - Prabhatchandra R Dube
- Department of Medicine, The University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - David J Kennedy
- Department of Medicine, The University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - W H Wilson Tang
- Department of Cardiovascular and Metabolic Sciences, Cleveland Clinic Lerner Research Institute, Cleveland, Ohio
| | - Kristen Westfall
- Department of Cardiovascular and Metabolic Sciences, Cleveland Clinic Lerner Research Institute, Cleveland, Ohio
| | - Sandrine V Pierre
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, West Virginia
| | - Zijian Xie
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, West Virginia
| | - Yiliang Chen
- Blood Research Institute, Versiti, Milwaukee, Wisconsin.,Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
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19
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Strauss-Kruger M, Kruger R, Smith W, Gafane-Matemane LF, Mokwatsi G, Wei W, Fedorova OV, Schutte AE. The Cardiotonic Steroid Marinobufagenin Is a Predictor of Increased Left Ventricular Mass in Obesity: The African-PREDICT Study. Nutrients 2020; 12:E3185. [PMID: 33081045 PMCID: PMC7603247 DOI: 10.3390/nu12103185] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/14/2020] [Accepted: 10/15/2020] [Indexed: 12/19/2022] Open
Abstract
The endogenous Na+/K+-ATPase inhibitor, marinobufagenin (MBG), strongly associates with salt intake and a greater left ventricular mass index (LVMi) in humans and was shown to promote cardiac fibrosis and hypertrophy in animals. The adverse effects of MBG on cardiac remodeling may be exacerbated with obesity, due to an increased sensitivity of Na+/K+-ATPase to MBG. This study determined whether MBG is related to the change in LVMi over time in adults with a body mass index (BMI) ≥30 kg/m2 (obese) and <30 kg/m2 (non-obese). The study followed 275 healthy participants (aged 20-30 years) from the African-Prospective study on the Early Detection and Identification of Cardiovascular disease and Hypertension (African-PREDICT) study over 4.5 years. At baseline, we measured 24 h urine MBG excretion. MBG levels were positively associated with salt intake. LVMi was determined by two-dimensional echocardiography at baseline and after >4.5 years. With multivariate adjusted analyses in obese adults (N = 56), we found a positive association of follow-up LVMi (Adjusted (Adj.) R2 = 0.35; Std. β = 0.311; p = 0.007) and percentage change in LVMi (Adj. R2 = 0.40; Std. β = 0.336; p = 0.003) with baseline MBG excretion. No association of LVMi (Adj. R2 = 0.37; p = 0.85) or percentage change in LVMi (Adj. R2 = 0.19; p = 0.68) with MBG excretion was evident in normal weight adults (N = 123). These findings suggest that obese adults may be more sensitive to the adverse cardiac effects of MBG and provide new insight into the potential role of dietary salt, by way of MBG, in the pathogenesis of cardiac remodeling in obese individuals.
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Affiliation(s)
- Michél Strauss-Kruger
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom 2520, South Africa; (M.S.-K.); (R.K.); (W.S.); (L.F.G.-M.); (G.M.)
| | - Ruan Kruger
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom 2520, South Africa; (M.S.-K.); (R.K.); (W.S.); (L.F.G.-M.); (G.M.)
- MRC Research Unit for Hypertension and Cardiovascular Disease, North-West University, Potchefstroom 2520, South Africa
| | - Wayne Smith
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom 2520, South Africa; (M.S.-K.); (R.K.); (W.S.); (L.F.G.-M.); (G.M.)
- MRC Research Unit for Hypertension and Cardiovascular Disease, North-West University, Potchefstroom 2520, South Africa
| | - Lebo F. Gafane-Matemane
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom 2520, South Africa; (M.S.-K.); (R.K.); (W.S.); (L.F.G.-M.); (G.M.)
- MRC Research Unit for Hypertension and Cardiovascular Disease, North-West University, Potchefstroom 2520, South Africa
| | - Gontse Mokwatsi
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom 2520, South Africa; (M.S.-K.); (R.K.); (W.S.); (L.F.G.-M.); (G.M.)
- MRC Research Unit for Hypertension and Cardiovascular Disease, North-West University, Potchefstroom 2520, South Africa
| | - Wen Wei
- National Institute on Aging, NIH, Baltimore, MD 212242, USA; (W.W.); (O.V.F.)
| | - Olga V. Fedorova
- National Institute on Aging, NIH, Baltimore, MD 212242, USA; (W.W.); (O.V.F.)
| | - Aletta E. Schutte
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom 2520, South Africa; (M.S.-K.); (R.K.); (W.S.); (L.F.G.-M.); (G.M.)
- MRC Research Unit for Hypertension and Cardiovascular Disease, North-West University, Potchefstroom 2520, South Africa
- School of Population Health, University of New South Wales, The George Institute for Global Health, Sydney 2052, Australia
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20
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Pillai SS, Lakhani HV, Zehra M, Wang J, Dilip A, Puri N, O’Hanlon K, Sodhi K. Predicting Nonalcoholic Fatty Liver Disease through a Panel of Plasma Biomarkers and MicroRNAs in Female West Virginia Population. Int J Mol Sci 2020; 21:ijms21186698. [PMID: 32933141 PMCID: PMC7554851 DOI: 10.3390/ijms21186698] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/04/2020] [Accepted: 09/11/2020] [Indexed: 02/07/2023] Open
Abstract
(1) Background: Nonalcoholic fatty liver disease (NAFLD) is primarily characterized by the presence of fatty liver, hepatic inflammation and fibrogenesis eventually leading to nonalcoholic steatohepatitis (NASH) or cirrhosis. Obesity and diabetes are common risk factors associated with the development and progression of NAFLD, with one of the highest prevalence of these diseased conditions in the West Virginia population. Currently, the diagnosis of NAFLD is limited to radiologic studies and biopsies, which are not cost-effective and highly invasive. Hence, this study aimed to develop a panel and assess the progressive levels of circulatory biomarkers and miRNA expression in patients at risk for progression to NASH to allow early intervention strategies. (2) Methods: In total, 62 female patients were enrolled and blood samples were collected after 8–10 h of fasting. Computed tomography was performed on abdomen/pelvis following IV contrast administration. The patients were divided into the following groups: Healthy subjects with normal BMI and normal fasting blood glucose (Control, n = 20), Obese with high BMI and normal fasting blood glucose (Obese, n = 20) and Obese with high fasting blood glucose (Obese + DM, n = 22). Based on findings from CT, another subset was created from Obese + DM group with patients who showed signs of fatty liver infiltration (Obese + DM(FI), n = 10). ELISA was performed for measurement of plasma biomarkers and RT-PCR was performed for circulating miRNA expression. (3) Results: Our results show significantly increased levels of plasma IL-6, Leptin and FABP-1, while significantly decreased level of adiponectin in Obese, Obese + DM and Obese + DM(FI) group, as compared to healthy controls. The level of CK-18 was significantly increased in Obese + DM(FI) group as compared to control. Subsequently, the expression of miR-122, miR-34a, miR-375, miR-16 and miR-21 was significantly increased in Obese + DM and Obese + DM(FI) group as compared to healthy control. Our results also show distinct correlation of IL-6, FABP-1 and adiponectin levels with the expression of miRNAs in relation to the extent of NAFLD progression. (4) Conclusion: Our results support the clinical application of these biomarkers and miRNAs in monitoring the progression of NAFLD, suggesting a more advanced diagnostic potential of this panel than conventional methods. This panel may provide an appropriate method for early prognosis and management of NAFLD and subsequent adverse hepatic pathophysiology, potentially reducing the disease burden on the West Virginia population.
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Affiliation(s)
- Sneha S. Pillai
- Departments of Surgery and Biomedical Sciences, Marshall University Joan C. Edwards School of Medicine, Huntington, WV 25701, USA; (S.S.P.); (H.V.L.); (M.Z.); (J.W.); (A.D.)
| | - Hari Vishal Lakhani
- Departments of Surgery and Biomedical Sciences, Marshall University Joan C. Edwards School of Medicine, Huntington, WV 25701, USA; (S.S.P.); (H.V.L.); (M.Z.); (J.W.); (A.D.)
| | - Mishghan Zehra
- Departments of Surgery and Biomedical Sciences, Marshall University Joan C. Edwards School of Medicine, Huntington, WV 25701, USA; (S.S.P.); (H.V.L.); (M.Z.); (J.W.); (A.D.)
| | - Jiayan Wang
- Departments of Surgery and Biomedical Sciences, Marshall University Joan C. Edwards School of Medicine, Huntington, WV 25701, USA; (S.S.P.); (H.V.L.); (M.Z.); (J.W.); (A.D.)
| | - Anum Dilip
- Departments of Surgery and Biomedical Sciences, Marshall University Joan C. Edwards School of Medicine, Huntington, WV 25701, USA; (S.S.P.); (H.V.L.); (M.Z.); (J.W.); (A.D.)
| | - Nitin Puri
- Departments of Biomedical Sciences and Medical Education, Marshall University Joan C. Edwards School of Medicine, Huntington, WV 25701, USA;
| | - Kathleen O’Hanlon
- Departments of Family Medicine, Marshall University Joan C. Edwards School of Medicine, Huntington, WV 25701, USA;
| | - Komal Sodhi
- Departments of Surgery and Biomedical Sciences, Marshall University Joan C. Edwards School of Medicine, Huntington, WV 25701, USA; (S.S.P.); (H.V.L.); (M.Z.); (J.W.); (A.D.)
- Correspondence: ; Tel.: +1-(304)-691-1704; Fax: +1-(914)-347-4956
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21
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Soumoy L, Wells M, Najem A, Krayem M, Ghanem G, Hambye S, Saussez S, Blankert B, Journe F. Toad Venom Antiproliferative Activities on Metastatic Melanoma: Bio-Guided Fractionation and Screening of the Compounds of Two Different Venoms. BIOLOGY 2020; 9:biology9080218. [PMID: 32785105 PMCID: PMC7464305 DOI: 10.3390/biology9080218] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 07/29/2020] [Accepted: 08/07/2020] [Indexed: 12/22/2022]
Abstract
Melanoma is the most common cancer in young adults, with a constantly increasing incidence. Metastatic melanoma is a very aggressive cancer with a 5-year survival rate of about 22-25%. This is, in most cases, due to a lack of therapies which are effective on the long term. Hence, it is crucial to find new therapeutic agents to increase patient survival. Toad venoms are a rich source of potentially pharmaceutically active compounds and studies have highlighted their possible effect on cancer cells. We focused on the venoms of two different toad species: Bufo bufo and Rhinella marina. We screened the venom crude extracts, the fractions from crude extracts and isolated biomolecules by studying their antiproliferative properties on melanoma cells aiming to determine the compound or the combination of compounds with the highest antiproliferative effect. Our results indicated strong antiproliferative capacities of toad venoms on melanoma cells. We found that these effects were mainly due to bufadienolides that are cardiotonic steroids potentially acting on the Na+/K+ ATPase pump which is overexpressed in melanoma. Finally, our results indicated that bufalin alone was the most interesting compound among the isolated bufadienolides because it had the highest antiproliferative activity on melanoma cells.
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Affiliation(s)
- Laura Soumoy
- Laboratory of Human Anatomy and Experimental Oncology, Faculty of Medicine and Pharmacy, University of Mons, 7000 Mons, Belgium; (L.S.); (S.S.)
| | - Mathilde Wells
- Laboratory of Pharmaceutical Analysis, Faculty of Medicine and Pharmacy, University of Mons, 7000 Mons, Belgium; (M.W.); (S.H.); (B.B.)
| | - Ahmad Najem
- Laboratory of Oncology and Experimental Surgery, Institut Jules Bordet (ULB), 1000 Brussels, Belgium; (A.N.); (M.K.); (G.G.)
| | - Mohammad Krayem
- Laboratory of Oncology and Experimental Surgery, Institut Jules Bordet (ULB), 1000 Brussels, Belgium; (A.N.); (M.K.); (G.G.)
| | - Ghanem Ghanem
- Laboratory of Oncology and Experimental Surgery, Institut Jules Bordet (ULB), 1000 Brussels, Belgium; (A.N.); (M.K.); (G.G.)
| | - Stéphanie Hambye
- Laboratory of Pharmaceutical Analysis, Faculty of Medicine and Pharmacy, University of Mons, 7000 Mons, Belgium; (M.W.); (S.H.); (B.B.)
| | - Sven Saussez
- Laboratory of Human Anatomy and Experimental Oncology, Faculty of Medicine and Pharmacy, University of Mons, 7000 Mons, Belgium; (L.S.); (S.S.)
- Department of Oto-Rhino-Laryngology, Université Libre de Bruxelles (ULB), CHU Saint-Pierre, 1000 Brussels, Belgium
| | - Bertrand Blankert
- Laboratory of Pharmaceutical Analysis, Faculty of Medicine and Pharmacy, University of Mons, 7000 Mons, Belgium; (M.W.); (S.H.); (B.B.)
| | - Fabrice Journe
- Laboratory of Human Anatomy and Experimental Oncology, Faculty of Medicine and Pharmacy, University of Mons, 7000 Mons, Belgium; (L.S.); (S.S.)
- Laboratory of Oncology and Experimental Surgery, Institut Jules Bordet (ULB), 1000 Brussels, Belgium; (A.N.); (M.K.); (G.G.)
- Correspondence:
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22
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Elucidating Potential Profibrotic Mechanisms of Emerging Biomarkers for Early Prognosis of Hepatic Fibrosis. Int J Mol Sci 2020; 21:ijms21134737. [PMID: 32635162 PMCID: PMC7369895 DOI: 10.3390/ijms21134737] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 06/29/2020] [Accepted: 07/01/2020] [Indexed: 02/06/2023] Open
Abstract
Hepatic fibrosis has been associated with a series of pathophysiological processes causing excessive accumulation of extracellular matrix proteins. Several cellular processes and molecular mechanisms have been implicated in the diseased liver that augments fibrogenesis, fibrogenic cytokines and associated liver complications. Liver biopsy remains an essential diagnostic tool for histological evaluation of hepatic fibrosis to establish a prognosis. In addition to being invasive, this methodology presents with several limitations including poor cost-effectiveness, prolonged hospitalizations, and risks of peritoneal bleeding, while the clinical use of this method does not reveal underlying pathogenic mechanisms. Several alternate noninvasive diagnostic strategies have been developed, to determine the extent of hepatic fibrosis, including the use of direct and indirect biomarkers. Immediate diagnosis of hepatic fibrosis by noninvasive means would be more palatable than a biopsy and could assist clinicians in taking early interventions timely, avoiding fatal complications, and improving prognosis. Therefore, we sought to review some common biomarkers of liver fibrosis along with some emerging candidates, including the oxidative stress-mediated biomarkers, epigenetic and genetic markers, exosomes, and miRNAs that needs further evaluation and would have better sensitivity and specificity. We also aim to elucidate the potential role of cardiotonic steroids (CTS) and evaluate the pro-inflammatory and profibrotic effects of CTS in exacerbating hepatic fibrosis. By understanding the underlying pathogenic processes, the efficacy of these biomarkers could allow for early diagnosis and treatment of hepatic fibrosis in chronic liver diseases, once validated.
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23
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Kolpakova AF, Sharipov RN, Volkova OA, Kolpakov FA. Role of air pollution by particulate matter in the pathogenesis of cardiovascular diseases. Prevention measures. КАРДИОВАСКУЛЯРНАЯ ТЕРАПИЯ И ПРОФИЛАКТИКА 2020. [DOI: 10.15829/1728-8800-2020-2421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
The review highlights contemporary concepts about the role of atmospheric air pollution by particulate matter (PM) in pathogenesis of cardiovascular diseases (CVD). We used publications from the PubMed and Russian Science Citation Index databases. The influence of PM on the development and progression of CVD is considered depending on size, origin, chemical composition, concentration in air. PM with an aerodynamic diameter of ≤2,5 μm (PM2,5) are recognized as the most dangerous. Epidemiological studies have established a dose-dependent effect PM. Oxidative stress, damage of genome of cell and epigenetic changes associated with PM effect are the important component of CVD pathogenesis. Systematization of scientific data through a formalized description helps to understand the pathogenesis of CVD and facilitates its practical use for assessing the risk of occurrence, early diagnosing, prognostication, increasing the effectiveness of treatment, and developing preventive measures.
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Affiliation(s)
- A. F. Kolpakova
- Institute of Computational Technologies, Siberian Branch of the Russian Academy of Sciences
| | | | - O. A. Volkova
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences
| | - F. A. Kolpakov
- Institute of Computational Technologies, Siberian Branch of the Russian Academy of Sciences;
LLC BIOSOFT.RU
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24
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Skeletal Muscle Na,K-ATPase as a Target for Circulating Ouabain. Int J Mol Sci 2020; 21:ijms21082875. [PMID: 32326025 PMCID: PMC7215781 DOI: 10.3390/ijms21082875] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 04/16/2020] [Accepted: 04/18/2020] [Indexed: 02/07/2023] Open
Abstract
While the role of circulating ouabain-like compounds in the cardiovascular and central nervous systems, kidney and other tissues in health and disease is well documented, little is known about its effects in skeletal muscle. In this study, rats were intraperitoneally injected with ouabain (0.1-10 µg/kg for 4 days) alone or with subsequent injections of lipopolysaccharide (1 mg/kg). Some rats were also subjected to disuse for 6 h by hindlimb suspension. In the diaphragm muscle, chronic ouabain (1 µg/kg) hyperpolarized resting potential of extrajunctional membrane due to specific increase in electrogenic transport activity of the 2 Na,K-ATPase isozyme and without changes in 1 and 2 Na,K-ATPase protein content. Ouabain (10-20 nM), acutely applied to isolated intact diaphragm muscle from not injected rats, hyperpolarized the membrane to a similar extent. Chronic ouabain administration prevented lipopolysaccharide-induced (diaphragm muscle) or disuse-induced (soleus muscle) depolarization of the extrajunctional membrane. No stimulation of the 1 Na,K-ATPase activity in human red blood cells, purified lamb kidney and Torpedo membrane preparations by low ouabain concentrations was observed. Our results suggest that skeletal muscle electrogenesis is subjected to regulation by circulating ouabain via the 2 Na,K-ATPase isozyme that could be important for adaptation of this tissue to functional impairment.
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25
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Zhang S, Breidenbach JD, Khalaf FK, Dube PR, Mohammed CJ, Lad A, Stepkowski S, Hinds TD, Kumarasamy S, Kleinhenz A, Tian J, Malhotra D, Kennedy DJ, Cooper CJ, Haller ST. Renal Fibrosis Is Significantly Attenuated Following Targeted Disruption of Cd40 in Experimental Renal Ischemia. J Am Heart Assoc 2020; 9:e014072. [PMID: 32200719 PMCID: PMC7428653 DOI: 10.1161/jaha.119.014072] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Renal artery stenosis is a common cause of renal ischemia, contributing to the development of chronic kidney disease. To investigate the role of local CD40 expression in renal artery stenosis, Goldblatt 2‐kidney 1‐clip surgery was performed on hypertensive Dahl salt‐sensitive rats (S rats) and genetically modified S rats in which CD40 function is abolished (Cd40mutant). Methods and Results Four weeks following the 2‐kidney 1‐clip procedure, Cd40mutant rats demonstrated significantly reduced blood pressure and renal fibrosis in the ischemic kidneys compared with S rat controls. Similarly, disruption of Cd40 resulted in reduced 24‐hour urinary protein excretion in Cd40mutant rats versus S rat controls (46.2±1.9 versus 118.4±5.3 mg/24 h; P<0.01), as well as protection from oxidative stress, as indicated by increased paraoxonase activity in Cd40mutant rats versus S rat controls (P<0.01). Ischemic kidneys from Cd40mutant rats demonstrated a significant decrease in gene expression of the profibrotic mediator, plasminogen activator inhibitor‐1 (P<0.05), and the proinflammatory mediators, C‐C motif chemokine ligand 19 (P<0.01), C‐X‐C Motif Chemokine Ligand 9 (P<0.01), and interleukin‐6 receptor (P<0.001), compared with S rat ischemic kidneys, as assessed by quantitative PCR assay. Reciprocal renal transplantation documented that CD40 exclusively expressed in the kidney contributes to ischemia‐induced renal fibrosis. Furthermore, human CD40‐knockout proximal tubule epithelial cells suggested that suppression of CD40 signaling significantly inhibited expression of proinflammatory and ‐fibrotic genes. Conclusions Taken together, our data suggest that activation of CD40 induces a significant proinflammatory and ‐fibrotic response and represents an attractive therapeutic target for treatment of ischemic renal disease.
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Affiliation(s)
- Shungang Zhang
- Department of MedicineUniversity of Toledo College of Medicine and Life SciencesToledoOH
| | - Joshua D. Breidenbach
- Department of Medical Microbiology and ImmunologyUniversity of Toledo College of Medicine and Life SciencesToledoOH
| | - Fatimah K. Khalaf
- Department of MedicineUniversity of Toledo College of Medicine and Life SciencesToledoOH
| | - Prabhatchandra R. Dube
- Department of MedicineUniversity of Toledo College of Medicine and Life SciencesToledoOH
| | - Chrysan J. Mohammed
- Department of MedicineUniversity of Toledo College of Medicine and Life SciencesToledoOH
| | - Apurva Lad
- Department of Medical Microbiology and ImmunologyUniversity of Toledo College of Medicine and Life SciencesToledoOH
| | - Stanislaw Stepkowski
- Department of Medical Microbiology and ImmunologyUniversity of Toledo College of Medicine and Life SciencesToledoOH
| | - Terry D. Hinds
- Department of Physiology and PharmacologyUniversity of Toledo College of Medicine and Life SciencesToledoOH
| | - Sivarajan Kumarasamy
- Department of Physiology and PharmacologyUniversity of Toledo College of Medicine and Life SciencesToledoOH
| | - Andrew Kleinhenz
- Department of MedicineUniversity of Toledo College of Medicine and Life SciencesToledoOH
| | - Jiang Tian
- Department of MedicineUniversity of Toledo College of Medicine and Life SciencesToledoOH
| | - Deepak Malhotra
- Department of MedicineUniversity of Toledo College of Medicine and Life SciencesToledoOH
| | - David J. Kennedy
- Department of MedicineUniversity of Toledo College of Medicine and Life SciencesToledoOH
| | - Christopher J. Cooper
- Department of MedicineUniversity of Toledo College of Medicine and Life SciencesToledoOH
| | - Steven T. Haller
- Department of MedicineUniversity of Toledo College of Medicine and Life SciencesToledoOH
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Walther CP, Nambi V, Hanania NA, Navaneethan SD. Diagnosis and Management of Pulmonary Hypertension in Patients With CKD. Am J Kidney Dis 2020; 75:935-945. [PMID: 32199709 DOI: 10.1053/j.ajkd.2019.12.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 12/07/2019] [Indexed: 12/12/2022]
Abstract
Pulmonary hypertension (PH) is a highly prevalent and important condition in adults with chronic kidney disease (CKD). In this review, we summarize the definition of PH, discuss its pathophysiology and classifications, and describe diagnostic and management strategies in patients with CKD, including those with kidney failure treated by kidney replacement therapy. In the general population, PH is classified into 5 groups based on clinical presentation, pathology, hemodynamics, and management strategies. In this classification system, PH in CKD is placed in a diverse group with unclear or multifactorial mechanisms, although underlying cardiovascular disease may account for most cases. CKD may itself directly incite pulmonary circulatory dysfunction and remodeling through uremic toxins, inflammation, endothelial dysfunction, and altered vasoregulation. Despite several studies describing the higher prevalence of PH in CKD and kidney failure, along with an association with poor outcomes, high-quality evidence is not available for its diagnostic and management strategies in those with CKD. In CKD not requiring kidney replacement therapy, volume management along with treatment of underlying risk factors for PH are critical. In those receiving hemodialysis, options are limited and transition to peritoneal dialysis may be considered if recurrent hypotension precludes optimal volume control.
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Affiliation(s)
- Carl P Walther
- Selzman Institute for Kidney Health, Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, TX.
| | - Vijay Nambi
- Micheal E DeBakey Veterans Affairs Medical Center, Department of Medicine, Baylor College of Medicine, Houston, TX; Sections of Atherosclerosis and Vascular Medicine, Department of Medicine, Baylor College of Medicine, Houston, TX
| | - Nicola A Hanania
- Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Baylor College of Medicine, Houston, TX
| | - Sankar D Navaneethan
- Selzman Institute for Kidney Health, Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, TX; Section of Nephrology, Michael E. DeBakey Veterans Affairs Medical Center, Houston, TX.
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27
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Liu J, Nie Y, Chaudhry M, Bai F, Chuang J, Sodhi K, Shapiro JI. The Redox-Sensitive Na/K-ATPase Signaling in Uremic Cardiomyopathy. Int J Mol Sci 2020; 21:ijms21041256. [PMID: 32069992 PMCID: PMC7072896 DOI: 10.3390/ijms21041256] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/10/2020] [Accepted: 02/10/2020] [Indexed: 02/07/2023] Open
Abstract
In recent years, Na/K-ATPase signaling has been implicated in different physiological and pathophysiological conditions, including cardiac hypertrophy and uremic cardiomyopathy. Cardiotonic steroids (CTS), specific ligands of Na/K-ATPase, regulate its enzymatic activity (at higher concentrations) and signaling function (at lower concentrations without significantly affecting its enzymatic activity) and increase reactive oxygen species (ROS) generation. On the other hand, an increase in ROS alone also regulates the Na/K-ATPase enzymatic activity and signaling function. We termed this phenomenon the Na/K-ATPase-mediated oxidant-amplification loop, in which oxidative stress regulates both the Na/K-ATPase activity and signaling. Most recently, we also demonstrated that this amplification loop is involved in the development of uremic cardiomyopathy. This review aims to evaluate the redox-sensitive Na/K-ATPase-mediated oxidant amplification loop and uremic cardiomyopathy.
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Affiliation(s)
- Jiang Liu
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA; (Y.N.); (M.C.); (F.B.)
- Correspondence:
| | - Ying Nie
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA; (Y.N.); (M.C.); (F.B.)
| | - Muhammad Chaudhry
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA; (Y.N.); (M.C.); (F.B.)
| | - Fang Bai
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA; (Y.N.); (M.C.); (F.B.)
| | - Justin Chuang
- Department of Medicine, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA; (J.C.); (K.S.); (J.I.S.)
| | - Komal Sodhi
- Department of Medicine, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA; (J.C.); (K.S.); (J.I.S.)
| | - Joseph I. Shapiro
- Department of Medicine, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25755, USA; (J.C.); (K.S.); (J.I.S.)
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Khalaf FK, Tassavvor I, Mohamed A, Chen Y, Malhotra D, Xie Z, Tian J, Haller ST, Westfall K, Tang WHW, Kennedy DJ. Epithelial and Endothelial Adhesion of Immune Cells Is Enhanced by Cardiotonic Steroid Signaling Through Na +/K +-ATPase-α-1. J Am Heart Assoc 2020; 9:e013933. [PMID: 32013704 PMCID: PMC7033897 DOI: 10.1161/jaha.119.013933] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Background Recent studies have highlighted a critical role for a group of natriuretic hormones, cardiotonic steroid (CTS), in mediating renal inflammation and fibrosis associated with volume expanded settings, such as chronic kidney disease. Immune cell adhesion is a critical step in the inflammatory response; however, little is currently understood about the potential regulatory role of CTS signaling in this setting. Herein, we tested the hypothesis that CTS signaling through Na+/K+‐ATPase α‐1 (NKA α‐1) enhances immune cell recruitment and adhesion to renal epithelium that ultimately advance renal inflammation. Methods and Results We demonstrate that knockdown of the α‐1 isoform of Na/K‐ATPase causes a reduction in CTS‐induced macrophage infiltration in renal tissue as well reduces the accumulation of immune cells in the peritoneal cavity in vivo. Next, using functional adhesion assay, we demonstrate that CTS‐induced increases in the adhesion of macrophages to renal epithelial cells were significantly diminished after reduction of NKA α‐1 in either macrophages or renal epithelial cells as well after inhibition of NKA α‐1‐Src signaling cascade with a specific peptide inhibitor, pNaKtide in vitro. Finally, CTS‐induced expression of adhesion markers in both endothelial and immune cells was significantly inhibited in an NKA α‐1‐Src signaling dependent manner in vitro. Conclusions These findings suggest that CTS potentiates immune cell migration and adhesion to renal epithelium through an NKA α‐1–dependent mechanism; our new findings suggest that pharmacological inhibition of this feed‐forward loop may be useful in the treatment of renal inflammation associated with renal disease.
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Affiliation(s)
- Fatimah K Khalaf
- University of Toledo College of Medicine and Life Sciences Toledo OH
| | - Iman Tassavvor
- University of Toledo College of Medicine and Life Sciences Toledo OH
| | - Amal Mohamed
- University of Toledo College of Medicine and Life Sciences Toledo OH
| | - Yiliang Chen
- Blood Research Institute Blood Center of Wisconsin Milwaukee WI
| | - Deepak Malhotra
- University of Toledo College of Medicine and Life Sciences Toledo OH
| | - Zijian Xie
- Marshall Institute for Interdisciplinary Research Marshall University Huntington WV
| | - Jiang Tian
- University of Toledo College of Medicine and Life Sciences Toledo OH
| | - Steven T Haller
- University of Toledo College of Medicine and Life Sciences Toledo OH
| | - Kristen Westfall
- Department of Cardiovascular and Metabolic Sciences Lerner Research Institute Cleveland Clinic Cleveland OH
| | - W H Wilson Tang
- Department of Cardiovascular and Metabolic Sciences Lerner Research Institute Cleveland Clinic Cleveland OH.,Center for Cardiovascular Diagnostics and Prevention Lerner Research Institute Cleveland Clinic Cleveland OH.,Department of Cardiovascular Medicine, Heart and Vascular Institute Cleveland Clinic Cleveland OH
| | - David J Kennedy
- University of Toledo College of Medicine and Life Sciences Toledo OH
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Pavlovic D. Endogenous cardiotonic steroids and cardiovascular disease, where to next? Cell Calcium 2019; 86:102156. [PMID: 31896530 PMCID: PMC7031694 DOI: 10.1016/j.ceca.2019.102156] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 12/24/2019] [Accepted: 12/24/2019] [Indexed: 11/18/2022]
Abstract
Ever since British Physician William Withering first described the use of foxglove extract for treatment of patients with congestive heart failure in 1785, cardiotonic steroids have been used clinically to treat heart failure and more recently atrial fibrillation. Due to their ability to bind and inhibit the ubiquitous transport enzyme sodium potassium pump, thus regulating intracellular Na+ concentration in every living cell, they are also an essential tool for research into the sodium potassium pump structure and function. Exogenous CTS have been clearly demonstrated to affect cardiovascular system through modulation of vagal tone, cardiac contraction (via ionic changes) and altered natriuresis. Reports of a number of endogenous CTS, since the 1980s, have intensified research into their physiologic and pathophysiologic roles and opened up novel therapeutic targets. Substantive evidence pointing to the role of endogenous ouabain and marinobufagenin, the two most prominent CTS, in development of cardiovascular disease has accumulated. Nevertheless, their presence, structure, biosynthesis pathways and even mechanism of action remain unclear or controversial. In this review the current state-of-the-art, the controversies and the remaining questions surrounding the role of endogenous cardiotonic steroids in health and disease are discussed.
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Affiliation(s)
- Davor Pavlovic
- Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, B15 2TT, UK.
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30
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Leenen FHH, Wang HW, Hamlyn JM. Sodium pumps, ouabain and aldosterone in the brain: A neuromodulatory pathway underlying salt-sensitive hypertension and heart failure. Cell Calcium 2019; 86:102151. [PMID: 31954234 DOI: 10.1016/j.ceca.2019.102151] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 12/15/2019] [Indexed: 02/08/2023]
Abstract
Accumulating evidence obtained over the last three decades has revealed a neuroendocrine system in the brain that mediates long term increases in blood pressure. The system involves distinct ion transport pathways including the alpha-2 isoform of the Na,K pump and epithelial sodium channels, as well as critical hormone elements such as angiotensin II, aldosterone, mineralocorticoid receptors and endogenous ouabain. Activation of this system either by circulating or central sodium ions and/or angiotensin II leads to a cascading sequence of events that begins in the hypothalamus and involves the participation of several brain nuclei including the subfornical organ, supraoptic and paraventricular nuclei and the rostral ventral medulla. Key events include heightened aldosterone synthesis and mineralocorticoid receptor activation, upregulation of epithelial sodium channels, augmented synthesis and secretion of endogenous ouabain from hypothalamic magnocellular neurons, and sustained increases in sympathetic outflow. The latter step depends upon increased production of angiotensin II and the primary amplification of angiotensin II type I receptor signaling from the paraventricular nucleus to the rostral ventral lateral medulla. The transmission of sympathetic traffic is secondarily amplified in the periphery by increased short- and long-term potentiation in sympathetic ganglia and by sustained actions of endogenous ouabain in the vascular wall that augment expression of sodium calcium exchange, increase cytosolic Ca2+ and heighten myogenic tone and contractility. Upregulation of this multi-amplifier system participates in forms of hypertension where salt, angiotensin and/or aldosterone are elevated and contributes to adverse outcomes in heart failure.
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Affiliation(s)
- Frans H H Leenen
- Brain and Heart Research Group, University of Ottawa Heart Institute, Ottawa, ON, Canada
| | - Hong-Wei Wang
- Brain and Heart Research Group, University of Ottawa Heart Institute, Ottawa, ON, Canada
| | - John M Hamlyn
- Department of Physiology, University of Maryland, Baltimore, MD, USA.
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31
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Abstract
The term uraemic cardiomyopathy refers to the cardiac abnormalities that are seen in patients with chronic kidney disease (CKD). Historically, this term was used to describe a severe cardiomyopathy that was associated with end-stage renal disease and characterized by severe functional abnormalities that could be reversed following renal transplantation. In a modern context, uraemic cardiomyopathy describes the clinical phenotype of cardiac disease that accompanies CKD and is perhaps best characterized as diastolic dysfunction seen in conjunction with left ventricular hypertrophy and fibrosis. A multitude of factors may contribute to the pathogenesis of uraemic cardiomyopathy, and current treatments only modestly improve outcomes. In this Review, we focus on evolving concepts regarding the roles of fibroblast growth factor 23 (FGF23), inflammation and systemic oxidant stress and their interactions with more established mechanisms such as pressure and volume overload resulting from hypertension and anaemia, respectively, activation of the renin-angiotensin and sympathetic nervous systems, activation of the transforming growth factor-β (TGFβ) pathway, abnormal mineral metabolism and increased levels of endogenous cardiotonic steroids.
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Affiliation(s)
- Xiaoliang Wang
- Joan C. Edwards School of Medicine, Marshall University, Huntington, WV, USA
| | - Joseph I Shapiro
- Joan C. Edwards School of Medicine, Marshall University, Huntington, WV, USA.
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32
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Zhang Y, Wei W, Shilova V, Petrashevskaya NN, Zernetkina VI, Grigorova YN, Marshall CA, Fenner RC, Lehrmann E, Wood WH, Becker KG, Lakatta EG, Bagrov AY, Fedorova OV. Monoclonal Antibody to Marinobufagenin Downregulates TGFβ Profibrotic Signaling in Left Ventricle and Kidney and Reduces Tissue Remodeling in Salt-Sensitive Hypertension. J Am Heart Assoc 2019; 8:e012138. [PMID: 31576777 PMCID: PMC6818028 DOI: 10.1161/jaha.119.012138] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Background Elevated levels of an endogenous Na/K-ATPase inhibitor marinobufagenin accompany salt-sensitive hypertension and are implicated in cardiac fibrosis. Immunoneutralization of marinobufagenin reduces blood pressure in Dahl salt-sensitive (Dahl-S) rats. The effect of the anti-marinobufagenin monoclonal antibody on blood pressure, left ventricular (LV) and renal remodeling, and gene expression were investigated in hypertensive Dahl-S rats. Methods and Results Dahl-S rats were fed high NaCl (8%, HS; n=14) or low NaCl (0.1%, LS; n=14) diets for 8 weeks. Animals were administered control antibody (LS control antibody, LSC; HS control antibody, HSC; n=7 per group) or anti-marinobufagenin antibody once on week 7 of diet intervention (n=7 per group). Levels of marinobufagenin, LV, and kidney mRNAs and proteins implicated in profibrotic signaling were assessed. Systolic blood pressure was elevated (211±8 versus 133±3 mm Hg, P<0.01), marinobufagenin increased 2-fold in plasma (P<0.05) and 5-fold in urine (P<0.01), LV and kidney weights increased, and levels of LV collagen-1 rose 3.5-fold in HSC versus LSC. Anti-marinobufagenin antibody treatment decreased systolic blood pressure by 24 mm Hg (P<0.01) and reduced organ weights and level of LV collagen-1 (P<0.01) in hypertensive Dahl salt-sensitive rats with anti-marinobufagenin antibody versus HSC. The expression of genes related to transforming growth factor-β-dependent signaling was upregulated in the left ventricles and kidneys in HSC versus LSC groups and became downregulated following administration of anti-marinobufagenin antibody to hypertensive Dahl-S rats. Marinobufagenin also activated transforming growth factor-β signaling in cultured ventricular myocytes from Dahl-S rats. Conclusions Immunoneutralization of heightened marinobufagenin levels in hypertensive Dahl-S rats resulted in a downregulation of genes implicated in transforming growth factor-β pathway, which indicates that marinobufagenin is an activator of profibrotic transforming growth factor-β-dependent signaling in salt-sensitive hypertension.
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Affiliation(s)
- Yongqing Zhang
- Laboratory of Genetics and Genomics National Institute on Aging NIH Baltimore MD
| | - Wen Wei
- Laboratory of Cardiovascular Science National Institute on Aging NIH Baltimore MD
| | - Victoria Shilova
- Laboratory of Cardiovascular Science National Institute on Aging NIH Baltimore MD
| | | | | | - Yulia N Grigorova
- Laboratory of Cardiovascular Science National Institute on Aging NIH Baltimore MD
| | - Courtney A Marshall
- Laboratory of Cardiovascular Science National Institute on Aging NIH Baltimore MD
| | - Rachel C Fenner
- Laboratory of Cardiovascular Science National Institute on Aging NIH Baltimore MD
| | - Elin Lehrmann
- Laboratory of Genetics and Genomics National Institute on Aging NIH Baltimore MD
| | - William H Wood
- Laboratory of Genetics and Genomics National Institute on Aging NIH Baltimore MD
| | - Kevin G Becker
- Laboratory of Genetics and Genomics National Institute on Aging NIH Baltimore MD
| | - Edward G Lakatta
- Laboratory of Cardiovascular Science National Institute on Aging NIH Baltimore MD
| | - Alexei Y Bagrov
- Laboratory of Cardiovascular Science National Institute on Aging NIH Baltimore MD
| | - Olga V Fedorova
- Laboratory of Cardiovascular Science National Institute on Aging NIH Baltimore MD
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Khalaf FK, Dube P, Kleinhenz AL, Malhotra D, Gohara A, Drummond CA, Tian J, Haller ST, Xie Z, Kennedy DJ. Proinflammatory Effects of Cardiotonic Steroids Mediated by NKA α-1 (Na+/K+-ATPase α-1)/Src Complex in Renal Epithelial Cells and Immune Cells. Hypertension 2019; 74:73-82. [PMID: 31132948 DOI: 10.1161/hypertensionaha.118.12605] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Cardiotonic steroids (CTSs) are NKA α-1 (Na+/K+-ATPase α-1) ligands that are increased in volume expanded states and associated with cardiac and renal diseases. Although initiation and resolution of inflammation is an important component of cellular injury and repair in renal disease, it is unknown whether CTS activation of NKA α-1 signaling in this setting regulates this inflammatory response. On this background, we hypothesized that CTS signaling through the NKA α-1-Src kinase complex promotes a proinflammatory response in renal epithelial and immune cells. First, we observed that the CTS telocinobufagin activated multiple proinflammatory cytokines/chemokines in renal epithelial cells, and these effects were attenuated after either NKA α-1 knockdown or with a specific inhibitor of the NKA α-1-Src kinase complex (pNaKtide). Similar findings were observed in immune cells, where we demonstrated that while telocinobufagin induced both oxidative burst and enhanced Nuclear factor kappa-light-chain-enhancer of activated B cells activation in macrophages ( P<0.05), the effects were abolished in NKA α-1+/- macrophages or by pretreatment with pNaKtide or the Src inhibitor PP2 ( P<0.01). In a series of in vivo studies, we found that 5/6th partial nephrectomy induced significantly less oxidative stress in the remnant kidney of NKA α-1+/- versus wild-type mice. Similarly, 5/6th partial nephrectomy yielded decreased levels of the urinary oxidative stress marker 8-Oxo-2'-deoxyguanosine in NKA α-1+/- versus wild-type mice. Finally, we found that in vivo inhibition of the NKA α-1-Src kinase complex with pNaKtide significantly inhibited renal proinflammatory gene expression after 5/6th partial nephrectomy. These findings suggest that the NKA α-1-Src kinase complex plays a central role in regulating the renal inflammatory response induced by elevated CTS both in vitro and in vivo.
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Affiliation(s)
- Fatimah K Khalaf
- From the Department of Medicine (F.K.K., P.D., A.L.K., D.M., C.A.D., J.T., S.T.H., D.J.K.) University of Toledo College of Medicine and Life Sciences, OH
| | - Prabhatchandra Dube
- From the Department of Medicine (F.K.K., P.D., A.L.K., D.M., C.A.D., J.T., S.T.H., D.J.K.) University of Toledo College of Medicine and Life Sciences, OH
| | - Andrew L Kleinhenz
- From the Department of Medicine (F.K.K., P.D., A.L.K., D.M., C.A.D., J.T., S.T.H., D.J.K.) University of Toledo College of Medicine and Life Sciences, OH
| | - Deepak Malhotra
- From the Department of Medicine (F.K.K., P.D., A.L.K., D.M., C.A.D., J.T., S.T.H., D.J.K.) University of Toledo College of Medicine and Life Sciences, OH
| | - Amira Gohara
- Department of Pathology (A.G.) University of Toledo College of Medicine and Life Sciences, OH
| | - Christopher A Drummond
- From the Department of Medicine (F.K.K., P.D., A.L.K., D.M., C.A.D., J.T., S.T.H., D.J.K.) University of Toledo College of Medicine and Life Sciences, OH
| | - Jiang Tian
- From the Department of Medicine (F.K.K., P.D., A.L.K., D.M., C.A.D., J.T., S.T.H., D.J.K.) University of Toledo College of Medicine and Life Sciences, OH
| | - Steven T Haller
- From the Department of Medicine (F.K.K., P.D., A.L.K., D.M., C.A.D., J.T., S.T.H., D.J.K.) University of Toledo College of Medicine and Life Sciences, OH
| | - Zijian Xie
- Marshall Institute for Interdisciplinary Research, Marshall University, Huntington, WV (Z.X.)
| | - David J Kennedy
- From the Department of Medicine (F.K.K., P.D., A.L.K., D.M., C.A.D., J.T., S.T.H., D.J.K.) University of Toledo College of Medicine and Life Sciences, OH
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Strauss M, Smith W, Fedorova OV, Schutte AE. The Na +K +-ATPase Inhibitor Marinobufagenin and Early Cardiovascular Risk in Humans: a Review of Recent Evidence. Curr Hypertens Rep 2019; 21:38. [PMID: 30980225 PMCID: PMC6590998 DOI: 10.1007/s11906-019-0942-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW This review synthesizes recent findings in humans pertaining to the relationships between marinobufagenin (MBG), a steroidal Na+/K+-ATPase inhibitor and salt-sensitivity biomarker, and early cardiovascular risk markers. RECENT FINDINGS Twenty-four-hour urinary MBG strongly associates with habitual salt intake in young healthy adults (aged 20-30 years). Furthermore, in young healthy adults free of detected cardiovascular disease, MBG associates with increased large artery stiffness and left ventricular mass independent of blood pressure. These findings in human studies corroborate mechanistic data from rat studies whereby stimulation of MBG by a high salt intake or MBG infusion increased vascular fibrosis and cardiac hypertrophy. Twenty-four-hour urinary MBG may be a potential biomarker of early cardiovascular risk. Adverse associations between MBG-which increases with salt consumption-and early cardiovascular risk markers support the global efforts to reduce population-wide salt intake in an effort to prevent and control the burden of non-communicable diseases.
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Affiliation(s)
- Michél Strauss
- Hypertension in Africa Research Team (HART), North-West University, Private Bag X1290, Potchefstroom, 2520, South Africa
| | - Wayne Smith
- Hypertension in Africa Research Team (HART), North-West University, Private Bag X1290, Potchefstroom, 2520, South Africa
- MRC Research Unit: Hypertension and Cardiovascular Disease, North-West University, Potchefstroom, South Africa
| | - Olga V Fedorova
- Laboratory of Cardiovascular Science, National Institute on Aging, NIH, Baltimore, MD, USA
| | - Aletta E Schutte
- Hypertension in Africa Research Team (HART), North-West University, Private Bag X1290, Potchefstroom, 2520, South Africa.
- MRC Research Unit: Hypertension and Cardiovascular Disease, North-West University, Potchefstroom, South Africa.
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35
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Lenaerts C, Wells M, Hambÿe S, Blankert B. Marinobufagenin extraction from Rhinella marina toad glands: Alternative approaches for a systematized strategy. J Sep Sci 2019; 42:1384-1392. [PMID: 30667156 DOI: 10.1002/jssc.201800879] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 01/11/2019] [Accepted: 01/17/2019] [Indexed: 01/06/2023]
Abstract
Marinobufagenin is a bufadienolide compound detected mainly in skin and parotoid gland secretions of Rhinella marina (L.) toad. Bufadienolides regulate the Na+ /K+ -ATPase pump by inhibiting the cardiotonic steroid dependent-site and act as cardiac inotropes with vasoconstrictive properties. Marinobufagenin and other bufadienolides, such as telocinobufagin and bufalin, are thought to be found endogenously in mammals in salt-sensitive hypertensive states such as essential hypertension, congestive heart-failure, and preeclampsia. The role of marinobufagenin as antimicrobial agent and its cytotoxic potential have also been recognized. The particular interest around marinobufagenin prompts us to consider the Rhinella marina toad venom as a possible source for molecules with pharmacological and/or diagnostic potential. In this article, two different approaches of extraction and purification of marinobufagenin from Rhinella marina (L.) venom are studied: (i) Preparative thin-layer chromatography combined to mass spectrometry and/or ultraviolet detection and (ii) solid-phase extraction coupled with fractionation on high-performance liquid chromatography. Different chromatographic conditions are tested for each approach. The solid-phase extraction combined with high-performance liquid chromatography fractionation approach was preferred as it offered a greater yield, was less time-consuming and allowed us to selectively isolate marinobufagenin. Both protocols aim to provide efficient and convenient methods for toad venom extraction, based on an easily automatable and systematized strategy.
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Affiliation(s)
- Charline Lenaerts
- Laboratory of Pharmaceutical Analysis, Faculty of medicine and pharmacy, Research Institute for Health Sciences and Technology, University of Mons, Mons, Belgium
| | - Mathilde Wells
- Laboratory of Pharmaceutical Analysis, Faculty of medicine and pharmacy, Research Institute for Health Sciences and Technology, University of Mons, Mons, Belgium
| | - Stéphanie Hambÿe
- Laboratory of Pharmaceutical Analysis, Faculty of medicine and pharmacy, Research Institute for Health Sciences and Technology, University of Mons, Mons, Belgium
| | - Bertrand Blankert
- Laboratory of Pharmaceutical Analysis, Faculty of medicine and pharmacy, Research Institute for Health Sciences and Technology, University of Mons, Mons, Belgium
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Abstract
Heart failure (HF) is the end result of many different cardiac and non-cardiac abnormalities leading to a complex clinical entity. In this view, the use of biomarkers in HF should be deeply reconsidered; indeed, the same biomarker may carry a different significance in patients with preserved or reduced EF. The aim of this review is to reconsider the role of biomarkers in HF, based on the different clinical characteristics of this syndrome. The role of cardiac and non-cardiac biomarkers will be reviewed with respect of the different clinical manifestations of this syndrome.
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Khalaf FK, Dube P, Mohamed A, Tian J, Malhotra D, Haller ST, Kennedy DJ. Cardiotonic Steroids and the Sodium Trade Balance: New Insights into Trade-Off Mechanisms Mediated by the Na⁺/K⁺-ATPase. Int J Mol Sci 2018; 19:E2576. [PMID: 30200235 PMCID: PMC6165267 DOI: 10.3390/ijms19092576] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 08/24/2018] [Accepted: 08/26/2018] [Indexed: 02/06/2023] Open
Abstract
In 1972 Neal Bricker presented the "trade-off" hypothesis in which he detailed the role of physiological adaptation processes in mediating some of the pathophysiology associated with declines in renal function. In the late 1990's Xie and Askari published seminal studies indicating that the Na⁺/K⁺-ATPase (NKA) was not only an ion pump, but also a signal transducer that interacts with several signaling partners. Since this discovery, numerous studies from multiple laboratories have shown that the NKA is a central player in mediating some of these long-term "trade-offs" of the physiological adaptation processes which Bricker originally proposed in the 1970's. In fact, NKA ligands such as cardiotonic steroids (CTS), have been shown to signal through NKA, and consequently been implicated in mediating both adaptive and maladaptive responses to volume overload such as fibrosis and oxidative stress. In this review we will emphasize the role the NKA plays in this "trade-off" with respect to CTS signaling and its implication in inflammation and fibrosis in target organs including the heart, kidney, and vasculature. As inflammation and fibrosis exhibit key roles in the pathogenesis of a number of clinical disorders such as chronic kidney disease, heart failure, atherosclerosis, obesity, preeclampsia, and aging, this review will also highlight the role of newly discovered NKA signaling partners in mediating some of these conditions.
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Affiliation(s)
- Fatimah K Khalaf
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Health Education Building RM 205, 3000 Arlington Ave, Toledo, OH 43614, USA.
| | - Prabhatchandra Dube
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Health Education Building RM 205, 3000 Arlington Ave, Toledo, OH 43614, USA.
| | - Amal Mohamed
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Health Education Building RM 205, 3000 Arlington Ave, Toledo, OH 43614, USA.
| | - Jiang Tian
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Health Education Building RM 205, 3000 Arlington Ave, Toledo, OH 43614, USA.
| | - Deepak Malhotra
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Health Education Building RM 205, 3000 Arlington Ave, Toledo, OH 43614, USA.
| | - Steven T Haller
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Health Education Building RM 205, 3000 Arlington Ave, Toledo, OH 43614, USA.
| | - David J Kennedy
- Department of Medicine, University of Toledo College of Medicine and Life Sciences, Health Education Building RM 205, 3000 Arlington Ave, Toledo, OH 43614, USA.
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Kennedy DJ, Khalaf FK, Sheehy B, Weber ME, Agatisa-Boyle B, Conic J, Hauser K, Medert CM, Westfall K, Bucur P, Fedorova OV, Bagrov AY, Tang WHW. Telocinobufagin, a Novel Cardiotonic Steroid, Promotes Renal Fibrosis via Na⁺/K⁺-ATPase Profibrotic Signaling Pathways. Int J Mol Sci 2018; 19:ijms19092566. [PMID: 30158457 PMCID: PMC6164831 DOI: 10.3390/ijms19092566] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 08/26/2018] [Accepted: 08/27/2018] [Indexed: 12/24/2022] Open
Abstract
Cardiotonic steroids (CTS) are Na+/K+-ATPase (NKA) ligands that are elevated in volume-expanded states and associated with cardiac and renal dysfunction in both clinical and experimental settings. We test the hypothesis that the CTS telocinobufagin (TCB) promotes renal dysfunction in a process involving signaling through the NKA α-1 in the following studies. First, we infuse TCB (4 weeks at 0.1 µg/g/day) or a vehicle into mice expressing wild-type (WT) NKA α-1, as well as mice with a genetic reduction (~40%) of NKA α-1 (NKA α-1+/−). Continuous TCB infusion results in increased proteinuria and cystatin C in WT mice which are significantly attenuated in NKA α-1+/− mice (all p < 0.05), despite similar increases in blood pressure. In a series of in vitro experiments, 24-h treatment of HK2 renal proximal tubular cells with TCB results in significant dose-dependent increases in both Collagens 1 and 3 mRNA (2-fold increases at 10 nM, 5-fold increases at 100 nM, p < 0.05). Similar effects are seen in primary human renal mesangial cells. TCB treatment (100 nM) of SYF fibroblasts reconstituted with cSrc results in a 1.5-fold increase in Collagens 1 and 3 mRNA (p < 0.05), as well as increases in both Transforming Growth factor beta (TGFb, 1.5 fold, p < 0.05) and Connective Tissue Growth Factor (CTGF, 2 fold, p < 0.05), while these effects are absent in SYF cells without Src kinase. In a patient study of subjects with chronic kidney disease, TCB is elevated compared to healthy volunteers. These studies suggest that the pro-fibrotic effects of TCB in the kidney are mediated though the NKA-Src kinase signaling pathway and may have relevance to volume-overloaded conditions, such as chronic kidney disease where TCB is elevated.
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Affiliation(s)
- David J Kennedy
- Department of Medicine, University of Toledo College of Medicine, Toledo, OH 43614, USA.
| | - Fatimah K Khalaf
- Department of Medicine, University of Toledo College of Medicine, Toledo, OH 43614, USA.
| | - Brendan Sheehy
- Department of Cellular and Molecular Medicine, Lerner Research Institute Cleveland Clinic, Cleveland, OH 44106, USA.
| | - Malory E Weber
- Department of Cellular and Molecular Medicine, Lerner Research Institute Cleveland Clinic, Cleveland, OH 44106, USA.
| | - Brendan Agatisa-Boyle
- Department of Cellular and Molecular Medicine, Lerner Research Institute Cleveland Clinic, Cleveland, OH 44106, USA.
| | - Julijana Conic
- Department of Cellular and Molecular Medicine, Lerner Research Institute Cleveland Clinic, Cleveland, OH 44106, USA.
| | - Kayla Hauser
- Department of Cellular and Molecular Medicine, Lerner Research Institute Cleveland Clinic, Cleveland, OH 44106, USA.
| | - Charles M Medert
- Department of Cellular and Molecular Medicine, Lerner Research Institute Cleveland Clinic, Cleveland, OH 44106, USA.
| | - Kristen Westfall
- Department of Cellular and Molecular Medicine, Lerner Research Institute Cleveland Clinic, Cleveland, OH 44106, USA.
| | - Philip Bucur
- Department of Cellular and Molecular Medicine, Lerner Research Institute Cleveland Clinic, Cleveland, OH 44106, USA.
| | - Olga V Fedorova
- Laboratory of Cardiovascular Science, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA.
| | - Alexei Y Bagrov
- Sechenov Institute of Evolutionary Physiology and Biochemistry, St. Petersburg 194223, Russia.
| | - W H Wilson Tang
- Department of Cellular and Molecular Medicine, Lerner Research Institute Cleveland Clinic, Cleveland, OH 44106, USA.
- Center for Cardiovascular Diagnostics and Prevention, Lerner Research Institute Cleveland Clinic, Cleveland, OH 44106, USA.
- Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH 44195, USA.
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Piecha G, Kujawa-Szewieczek A, Kuczera P, Skiba K, Sikora-Grabka E, Więcek A. Plasma marinobufagenin immunoreactivity in patients with chronic kidney disease: a case control study. Am J Physiol Renal Physiol 2018; 315:F637-F643. [PMID: 30043626 DOI: 10.1152/ajprenal.00046.2018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Experimental data have shown increased plasma levels of marinobufagenin in kidney failure. In this case-controlled retrospective analysis, we evaluated plasma marinobufagenin immunoreactivity in hemodialysis patients compared with subjects with normal kidney function. Sixty-eight adult hemodialysis patients with chronic kidney disease (34 females and 34 males) as well as 68 age-, gender-, and blood pressure-matched subjects without chronic kidney disease were enrolled. Patients on stable hemodialysis regimen for at least 3 mo before the study were included. Exclusion criteria were: age <18 yr, severe liver or heart insufficiency, and overhydration. Subjects without chronic kidney disease must have had an estimated glomerular filtration rate ≥60 ml·min-1·1.72 m-2 according to the Modification of Diet in Renal Disease formula. Plasma marinobufagenin immunoreactivity was significantly ( P < 0.001) higher in hemodialysis patients (1.66 ± 1.13 nmol/l) compared with subjects with normal kidney function (0.46 ± 0.23). In hemodialysis patients, plasma marinobufagenin immunoreactivity was higher in men compared with women. A significant positive correlation has been found between plasma marinobufagenin immunoreactivity and serum NT-proBNP, NT-proANP, or aldosterone concentrations in all analyzed subjects. In hemodialyzed patients with plasma marinobufagenin immunoreactivity above median value 5-yr, all-cause mortality was higher compared with those with plasma marinobufagenin concentration below median. We have shown that plasma marinobufagenin immunoreactivity is increased in patients with end-stage kidney failure treated with hemodialysis parallel to the increase in serum NT-proBNP, NT-proANP, and aldosterone concentrations. Higher marinobufagenin immunoreactivity has been associated with worse survival in hemodialyzed patients.
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Affiliation(s)
- Grzegorz Piecha
- Department of Nephrology, Transplantation and Internal Medicine, Medical University of Silesia , Katowice , Poland
| | - Agata Kujawa-Szewieczek
- Department of Nephrology, Transplantation and Internal Medicine, Medical University of Silesia , Katowice , Poland
| | - Piotr Kuczera
- Department of Nephrology, Transplantation and Internal Medicine, Medical University of Silesia , Katowice , Poland
| | - Katarzyna Skiba
- Department of Nephrology, Transplantation and Internal Medicine, Medical University of Silesia , Katowice , Poland
| | - Ewelina Sikora-Grabka
- Department of Nephrology, Transplantation and Internal Medicine, Medical University of Silesia , Katowice , Poland
| | - Andrzej Więcek
- Department of Nephrology, Transplantation and Internal Medicine, Medical University of Silesia , Katowice , Poland
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40
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Strauss M, Smith W, Kruger R, Wei W, Fedorova OV, Schutte AE. Marinobufagenin and left ventricular mass in young adults: The African-PREDICT study. Eur J Prev Cardiol 2018; 25:1587-1595. [PMID: 29993282 DOI: 10.1177/2047487318788140] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Background The endogenous steroidal inhibitor of sodium-potassium-dependent adenosine triphosphate and natriuretic hormone, marinobufagenin, plays a physiological role in ionic homeostasis. Animal models suggest that elevated marinobufagenin adversely associates with cardiac and renal, structural and functional alterations. It remains uncertain whether marinobufagenin relates to the early stages of target organ damage development, especially in young adults without cardiovascular disease. We therefore explored whether elevated 24-hour urinary marinobufagenin excretion was related to indices of subclinical target organ damage in young healthy adults. Design This cross-sectional study included 711 participants from the African-PREDICT study (black 51%, men 42%, 24.8 ± 3.02 years). Methods We assessed cardiac geometry and function by two-dimensional echocardiography and pulse wave Doppler imaging. 24-Hour urinary marinobufagenin and sodium excretion were measured, and the estimated glomerular filtration rate determined. Results Across marinobufagenin excretion quartiles, left ventricular mass ( P < 0.001), end diastolic volume ( P < 0.001), stroke volume ( P = 0.004) and sodium excretion ( P < 0.001) were higher within the fourth compared with the first quartile. Partial regression analyses indicated that left ventricular mass ( r = 0.08, P = 0.043), end diastolic volume ( r = 0.10, P = 0.010) and stroke volume ( r = 0.09, P = 0.022) were positively related to marinobufagenin excretion. In multivariate-adjusted regression analysis, left ventricular mass associated positively with marinobufagenin excretion only in the highest marinobufagenin excretion quartile (adjusted R2 = 0.20; β = 0.15; P = 0.043). This relationship between left ventricular mass and marinobufagenin excretion was evident in women (adjusted R2 = 0.06; β = 0.127; P = 0.015) but not in men (adjusted R2 = 0.06; β = 0.007; P = 0.92). Conclusions Left ventricular mass positively and independently associates with marinobufagenin excretion in young healthy adults with excessively high marinobufagenin excretion. Women may be more sensitive to the effects of marinobufagenin on early structural cardiac changes.
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Affiliation(s)
- Michél Strauss
- 1 Hypertension in Africa Research Team (HART), North-West University, South Africa
| | - Wayne Smith
- 1 Hypertension in Africa Research Team (HART), North-West University, South Africa.,2 MRC Research Unit: Hypertension and Cardiovascular Disease, North-West University, South Africa
| | - Ruan Kruger
- 1 Hypertension in Africa Research Team (HART), North-West University, South Africa.,2 MRC Research Unit: Hypertension and Cardiovascular Disease, North-West University, South Africa
| | - Wen Wei
- 3 National Institute on Aging, National Institutes of Health, USA
| | - Olga V Fedorova
- 3 National Institute on Aging, National Institutes of Health, USA
| | - Aletta E Schutte
- 1 Hypertension in Africa Research Team (HART), North-West University, South Africa.,2 MRC Research Unit: Hypertension and Cardiovascular Disease, North-West University, South Africa
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Is there a causal link between intracellular Na elevation and metabolic remodelling in cardiac hypertrophy? Biochem Soc Trans 2018; 46:817-827. [PMID: 29970448 PMCID: PMC6103460 DOI: 10.1042/bst20170508] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/23/2018] [Accepted: 05/24/2018] [Indexed: 01/23/2023]
Abstract
Alterations in excitation–contraction coupling and elevated intracellular sodium (Nai) are hallmarks of pathological cardiac remodelling that underline contractile dysfunction. In addition, changes in cardiac metabolism are observed in cardiac hypertrophy and heart failure (HF) that lead to a mismatch in ATP supply and demand, contributing to poor prognosis. A link between Nai and altered metabolism has been proposed but is not well understood. Many mitochondrial enzymes are stimulated by mitochondrial calcium (Camito) during contraction, thereby sustaining production of reducing equivalents to maintain ATP supply. This stimulation is thought to be perturbed when cytosolic Nai is high due to increased Camito efflux, potentially compromising ATPmito production and leading to metabolic dysregulation. Increased Nai has been previously shown to affect Camito; however, whether Nai elevation plays a causative role in energetic mismatching in the hypertrophied and failing heart remains unknown. In this review, we discuss the relationship between elevated Nai, NaK ATPase dysregulation and the metabolic phenotype in the contexts of pathological hypertrophy and HF and their link to metabolic flexibility, capacity (reserve) and efficiency that are governed by intracellular ion homeostasis. The development of non-invasive analytical techniques using nuclear magnetic resonance able to probe metabolism in situ in the functioning heart will enable a better understanding of the underlying mechanisms of Nai overload in cardiac pathophysiology. They will lead to novel insights that help to explain the metabolic contribution towards these diseases, the incomplete rescue observed with current therapies and a rationale for future energy-targeted therapies.
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Usende IL, Olopade JO, Emikpe BO, Oyagbemi AA, Adedapo AA. Oxidative stress changes observed in selected organs of African giant rats ( Cricetomys gambianus) exposed to sodium metavanadate. Int J Vet Sci Med 2018; 6:80-89. [PMID: 30255083 PMCID: PMC6147385 DOI: 10.1016/j.ijvsm.2018.03.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 02/28/2018] [Accepted: 03/14/2018] [Indexed: 12/11/2022] Open
Abstract
Vanadium is a contaminant of crude oil that released into the atmosphere through burning of fossil fuels. The mechanism by which it exerts toxic influences had not been fully elucidated in African giant rat (AGR). This study investigates the mechanisms of sodium metavanadate (SMV) induced oxidative stress in AGR. A total of 24 adult male AGR weighing 600-850 g were used. Animals were randomly divided into six groups. Groups 1, 3 and 5 served as control while groups 2, 4 and 6 were treated with intraperitoneal 3 mg/kg body weight of SMV for 3, 7 and 14 days, respectively. Serum, brain, liver, testes, kidneys, spleen and lungs were harvested for biochemical assays. SMV induced significant increase in malondialdehyde, hydrogen peroxide, sulfhydryl (total thiol) and protein carbonyl levels but decreased non-protein thiol levels in tissues accessed. A significant decrease was observed in glutathione-S-transferase (GST), superoxide dismutase (SOD), reduced glutathione (GSH) and glutathione peroxidase (GPx) levels in SMV treated rats compared to controls. Serum myeloperoxidase, xanthine oxidase and Advanced Oxidative Protein Products (AOPP) were markedly increased while nitrous oxide levels were significantly decreased in all treated groups. SMV exposure to AGR induced oxidative stress through generation of reactive oxygen species (ROS) and depletion of the antioxidant defence system. These conditions could become severe with prolonged exposure.
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Affiliation(s)
- Ifukibot L. Usende
- Department of Veterinary Anatomy, University of Abuja, Nigeria
- Department of Veterinary Anatomy, University of Ibadan, Nigeria
| | | | | | - Ademola A. Oyagbemi
- Department of Veterinary Physiology and Biochemistry, University of Ibadan, Nigeria
| | - Adeolu A. Adedapo
- Department of Veterinary Pharmacology and Toxicology, University of Ibadan, Nigeria
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Abstract
More than half of all deaths among end stage renal disease (ESRD) patients are due to cardiovascular disease (CVD). Cardiovascular changes secondary to renal dysfunction, including fluid overload, uremic cardiomyopathy, secondary hyperparathyroidism, anemia, altered lipid metabolism, and accumulation of gut microbiota-derived uremic toxins like trimethylamine N-oxidase, contribute to the high risk for CVD in the ESRD population. In addition, conventional hemodialysis (HD) itself poses myocardial stress and injury on the already compromised cardiovascular system in uremic patients. This review will provide an overview of cardiovascular changes in chronic kidney disease and ESRD, a description of reported mechanisms for HD-induced myocardial injury, comparison of HD with other treatment modalities in the context of CVD, and possible management strategies.
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Affiliation(s)
- Shadi Ahmadmehrabi
- Cleveland Clinic Lerner College of Medicine at Case Western Reserve University, Cleveland, OH, USA
| | - W H Wilson Tang
- Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH, USA.,Center for Clinical Genomics, Cleveland Clinic, Cleveland, OH, USA.,Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
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Estapé ES, González-Sepúlveda L, Wei W, Rodríguez-Rivera I, Torres-Negrón I. Low to Normal Plasma Levels of Marinobufagenin 24 Hours or More after an Ischemic Stroke: A Pilot Study. ACTA ACUST UNITED AC 2018; 4. [PMID: 30957100 DOI: 10.23937/2572-4142.1510006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Background Numerous studies have demonstrated a strong relationship between circulating levels of marinobufagenin (MBG) and salt-sensitivity. Since salt-sensitive hypertensives have increased plasma levels of MBG and are known to be at a higher risk of having cardiovascular events, stroke and increased mortality, we evaluated the possibility of an association between MBG and ischemic stroke. In this pilot study, we determined plasma MBG levels in patients after surviving an ischemic stroke compared to similar age and gender groups of treated hypertensives and normotensive controls. Methods We measured plasma MBG levels in a total of 40 participants subdivided into three groups: After an ischemic stroke STR (n = 13), participants with a diagnosis of hypertension receiving blood pressure medication HT (n = 14) and normotensive control subjects CTL (n = 13). We used inferential statistics (parametric or non-parametric) and ordered logistic regression models (unadjusted and adjusted) and all statistical analyses were performed using Stata 14. Results We did not include a subject from the CTL group because of a diagnosis of glucose-6-phosphate dehydrogenase deficiency and an extreme plasma MBG value of 2,246 pmol/L. Participants' mean age was 60.4 ± 11.5 years; 56% were male. There was no significant difference between study groups (p > 0.05) for gender, age, and body mass index. HbA1c levels were significantly higher in the STR as compared to the CTL p < 0.05). In the STR group MBG levels were below the normal range (< 200 pmol/L) in three (23%), eight (61%) were in the normal range (200-400 pmol/L), while two (16%) had increased MBG values (> 400 pmol/L). Also, among the STR, the plasma MBG levels did not differ between those receiving and not receiving thrombolytic therapy (p > 0.05). From the 14 HT participants, six (43%) had MBG plasma levels within the normal range, and eight (57%) had high concentrations (> 400 pmol/L). Four (29%) of the treated hypertensives had extreme MBG levels (> 1,000 pmol/L) and normal values of blood pressure. Conclusion There was no significant elevation of plasma MBG in survivors 24 h or more after an ischemic stroke. The extreme values of plasma MBG in 29% of the treated hypertensives suggests the presence of salt-sensitivity and a possible side effect of a specific combination of medications. Both of these findings contribute new knowledge to the design of studies to define if there is an MBG molecular mechanism underlying the complex associations among salt-sensitivity, hypertension, and ischemic stroke.
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Affiliation(s)
- Estela S Estapé
- University of Puerto Rico, Medical Sciences Campus, Puerto Rico.,San Juan Bautista School of Medicine, Caguas, Puerto Rico
| | | | - Wen Wei
- National Institute of Aging, National Institutes of Health, Baltimore, MD, USA
| | | | - Ivette Torres-Negrón
- Universidad del Turabo, Ana G Méndez University System, Puerto Rico.,Universidad Metropolitana, Ana G Méndez University System, Puerto Rico
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Wang X, Liu J, Drummond CA, Shapiro JI. Sodium potassium adenosine triphosphatase (Na/K-ATPase) as a therapeutic target for uremic cardiomyopathy. Expert Opin Ther Targets 2017; 21:531-541. [PMID: 28338377 PMCID: PMC5590225 DOI: 10.1080/14728222.2017.1311864] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 03/23/2017] [Indexed: 12/30/2022]
Abstract
INTRODUCTION Clinically, patients with significant reductions in renal function present with cardiovascular dysfunction typically termed, uremic cardiomyopathy. It is a progressive series of cardiac pathophysiological changes, including left ventricular diastolic dysfunction and hypertrophy (LVH) which sometimes progress to left ventricular dilation (LVD) and systolic dysfunction in the setting of chronic kidney disease (CKD). Uremic cardiomyopathy is almost ubiquitous in patients afflicted with end stage renal disease (ESRD). Areas covered: This article reviews recent epidemiology, pathophysiology of uremic cardiomyopathy and provide a board overview of Na/K-ATPase research with detailed discussion on the mechanisms of Na/K-ATPase/Src/ROS amplification loop. We also present clinical and preclinical evidences as well as molecular mechanism of this amplification loop in the development of uremic cardiomyopathy. A potential therapeutic peptide that targets on this loop is discussed. Expert opinion: Current clinical treatment for uremic cardiomyopathy remains disappointing. Targeting the ROS amplification loop mediated by the Na/K-ATPase signaling function may provide a novel therapeutic target for uremic cardiomyopathy and related diseases. Additional studies of Na/K-ATPase and other strategies that regulate this loop will lead to new therapeutics.
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Affiliation(s)
- Xiaoliang Wang
- a Joan C Edwards School of Medicine at Marshall University , Huntington , WV , United States
- b University of Toledo College of Medicine and Life Sciences , Toledo , OH , United States
| | - Jiang Liu
- a Joan C Edwards School of Medicine at Marshall University , Huntington , WV , United States
| | - Christopher A Drummond
- b University of Toledo College of Medicine and Life Sciences , Toledo , OH , United States
| | - Joseph I Shapiro
- a Joan C Edwards School of Medicine at Marshall University , Huntington , WV , United States
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Oyagbemi AA, Omobowale TO, Asenuga ER, Adejumobi AO, Ajibade TO, Ige TM, Ogunpolu BS, Adedapo AA, Yakubu MA. Sodium fluoride induces hypertension and cardiac complications through generation of reactive oxygen species and activation of nuclear factor kappa beta. ENVIRONMENTAL TOXICOLOGY 2017; 32:1089-1101. [PMID: 27378751 DOI: 10.1002/tox.22306] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 06/06/2016] [Accepted: 06/11/2016] [Indexed: 06/06/2023]
Abstract
Human exposure to sodium fluoride through its daily usage is almost inevitable. Cardiovascular and renal dysfunction has been associated with fluoride toxicity. Therefore, this study investigated the mechanism of action of sodium fluoride (NaF) induced hypertension and cardiovascular complications Forty male albino rats of an average of 10 rats per group were used. Group A received clean tap water. Toxicity was induced in Group B to D by administering graded doses of NaF through drinking water ad libitum for 10 days at 150 ppm, 300 ppm, and 600 ppm concentration respectively. Following administration of NaF, there was significant increase in systolic pressure, diastolic pressure and mean arterial pressure. Markers of oxidative stress; malondialdehyde, hydrogen peroxide, advance oxidation protein products, and protein carbonyl were significantly increased in dose-dependent pattern in the cardiac and renal tissues of rats together with significant decrease in the GST activity in NaF-treated rats compared to the control. Also serum markers of inflammation, cardiac, and renal damage including myeloperoxidase, xanthine oxidase, blood urea nitrogen, creatinine, Lactate dehydrogenase (LDH), and Creatinine kinase myocardial band (CK-MB) significantly increased indicating induction of oxidative stress, renal, and cardiac damage after exposure. Histopathology of the kidney and heart revealed aberrations in the histological architecture in NaF-treated rats. Also, immunohistochemistry showed higher expression of nuclear factor kappa beta (NF-kB) in the cardiac and renal tissues of rats administered NaF. Combining all, these results indicate NaF-induced hypertension through generation of reactive oxygen species and activation of renal and cardiac NF-kB expressions. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 1089-1101, 2017.
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Affiliation(s)
- Ademola Adetokunbo Oyagbemi
- Department of Veterinary Physiology, Biochemistry and Pharmacology, Faculty of Veterinary Medicine, University of Ibadan, Nigeria
| | | | | | | | - Temitayo Olabisi Ajibade
- Department of Veterinary Physiology, Biochemistry and Pharmacology, Faculty of Veterinary Medicine, University of Ibadan, Nigeria
| | - Temitope Moses Ige
- Department of Veterinary Physiology, Biochemistry and Pharmacology, Faculty of Veterinary Medicine, University of Ibadan, Nigeria
| | - Blessing Seun Ogunpolu
- Department of Veterinary Physiology, Biochemistry and Pharmacology, Faculty of Veterinary Medicine, University of Ibadan, Nigeria
| | - Adeolu Alex Adedapo
- Department of Veterinary Physiology, Biochemistry and Pharmacology, Faculty of Veterinary Medicine, University of Ibadan, Nigeria
| | - Momoh Audu Yakubu
- Department of Environmental and Interdisciplinary Sciences, College of Science, Technology and Engineering, Texas Southern University, 3100 Cleburne Avenue, Houston, TX, 77004, USA
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Liu L, Wu J, Kennedy DJ. Regulation of Cardiac Remodeling by Cardiac Na(+)/K(+)-ATPase Isoforms. Front Physiol 2016; 7:382. [PMID: 27667975 PMCID: PMC5016610 DOI: 10.3389/fphys.2016.00382] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 08/22/2016] [Indexed: 12/20/2022] Open
Abstract
Cardiac remodeling occurs after cardiac pressure/volume overload or myocardial injury during the development of heart failure and is a determinant of heart failure. Preventing or reversing remodeling is a goal of heart failure therapy. Human cardiomyocyte Na+/K+-ATPase has multiple α isoforms (1–3). The expression of the α subunit of the Na+/K+-ATPase is often altered in hypertrophic and failing hearts. The mechanisms are unclear. There are limited data from human cardiomyocytes. Abundant evidences from rodents show that Na+/K+-ATPase regulates cardiac contractility, cell signaling, hypertrophy and fibrosis. The α1 isoform of the Na+/K+-ATPase is the ubiquitous isoform and possesses both pumping and signaling functions. The α2 isoform of the Na+/K+-ATPase regulates intracellular Ca2+ signaling, contractility and pathological hypertrophy. The α3 isoform of the Na+/K+-ATPase may also be a target for cardiac hypertrophy. Restoration of cardiac Na+/K+-ATPase expression may be an effective approach for prevention of cardiac remodeling. In this article, we will overview: (1) the distribution and function of isoform specific Na+/K+-ATPase in the cardiomyocytes. (2) the role of cardiac Na+/K+-ATPase in the regulation of cell signaling, contractility, cardiac hypertrophy and fibrosis in vitro and in vivo. Selective targeting of cardiac Na+/K+-ATPase isoform may offer a new target for the prevention of cardiac remodeling.
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Affiliation(s)
- Lijun Liu
- Department of Medicine, College of Medicine and Life Sciences, University of Toledo Toledo, OH, USA
| | - Jian Wu
- Center for Craniofacial Molecular Biology, University of Southern California Los Angeles, CA, USA
| | - David J Kennedy
- Department of Medicine, College of Medicine and Life Sciences, University of Toledo Toledo, OH, USA
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Potential Harmful Effects of PM2.5 on Occurrence and Progression of Acute Coronary Syndrome: Epidemiology, Mechanisms, and Prevention Measures. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:ijerph13080748. [PMID: 27463723 PMCID: PMC4997434 DOI: 10.3390/ijerph13080748] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 07/13/2016] [Accepted: 07/20/2016] [Indexed: 12/18/2022]
Abstract
The harmful effects of particulate matter with an aerodynamic diameter of <2.5 µm (PM2.5) and its association with acute coronary syndrome (ACS) has gained increased attention in recent years. Significant associations between PM2.5 and ACS have been found in most studies, although sometimes only observed in specific subgroups. PM2.5-induced detrimental effects and ACS arise through multiple mechanisms, including endothelial injury, an enhanced inflammatory response, oxidative stress, autonomic dysfunction, and mitochondria damage as well as genotoxic effects. These effects can lead to a series of physiopathological changes including coronary artery atherosclerosis, hypertension, an imbalance between energy supply and demand to heart tissue, and a systemic hypercoagulable state. Effective strategies to prevent the harmful effects of PM2.5 include reducing pollution sources of PM2.5 and population exposure to PM2.5, and governments and organizations publicizing the harmful effects of PM2.5 and establishing air quality standards for PM2.5. PM2.5 exposure is a significant risk factor for ACS, and effective strategies with which to prevent both susceptible and healthy populations from an increased risk for ACS have important clinical significance in the prevention and treatment of ACS.
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