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Chen X, Delić D, Cao Y, Zhang Z, Wu H, Hasan AA, Gaballa MMS, Yin L, Krämer BK, Klein T, Shi X, He B, Shen L, Hocher B. Renal and cardiac effects of the PDE9 inhibitor BAY 73-6691 in 5/6 nephrectomized rats. Pflugers Arch 2024; 476:755-767. [PMID: 38305876 DOI: 10.1007/s00424-024-02915-2] [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: 12/04/2023] [Revised: 01/15/2024] [Accepted: 01/23/2024] [Indexed: 02/03/2024]
Abstract
It has been suggested that the novel selective phosphodiesterase 9 (PDE9) inhibitor may improve cardiac and renal function by blocking 3',5'-cyclic guanosine monophosphate (cGMP) degradation. 5/6 nephrectomized (5/6Nx) rats were used to investigate the effects of the PDE9 inhibitor (BAY 73-6691) on the heart and kidney. Two doses of BAY 73-6691 (1 mg/kg/day and 5 mg/kg/day) were given for 95 days. The 5/6Nx rats developed albuminuria, a decrease in serum creatinine clearance (Ccr), and elevated serum troponin T levels. Echocardiographic data showed that 5/6 nephrectomy resulted in increased fractional shortening (FS), stroke volume (SV), and left ventricular ejection fraction (EF). However, 95 days of PDE9 inhibitor treatment did not improve any cardiac and renal functional parameter. Histopathologically, 5/6 nephrectomy resulted in severe kidney and heart damage, such as renal interstitial fibrosis, glomerulosclerosis, and enlarged cardiomyocytes. Telmisartan attenuated renal interstitial fibrosis and glomerulosclerosis as well as improved cardiomyocyte size. However, except for cardiomyocyte size and renal perivascular fibrosis, BAY 73-6691 had no effect on other cardiac and renal histologic parameters. Pathway enrichment analysis using RNA sequencing data of kidney and heart tissue identified chronic kidney disease pathways, such as phosphatidylinositol 3-kinase (PI3K)-protein kinase B (Akt) signaling pathway, complement and coagulation cascades, and nuclear factor kappa B (NF-κB) signaling pathway. PDE9i did not affect any of these disease-related pathways. Two dosages of the PDE9 inhibitor BAY 73-6691 known to be effective in other rat models have only limited cardio-renal protective effects in 5/6 nephrectomized rats.
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Affiliation(s)
- Xin Chen
- Fifth Department of Medicine (Nephrology/Endocrinology/Rheumatology/Pneumology), University Medical Centre Mannheim, University of Heidelberg, Heidelberg, Germany
- Department of Nephrology, Charité - Universitätsmedizin Berlin, Campus Mitte, Berlin, Germany
- The First Clinical Medical College of Jinan University, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Denis Delić
- Fifth Department of Medicine (Nephrology/Endocrinology/Rheumatology/Pneumology), University Medical Centre Mannheim, University of Heidelberg, Heidelberg, Germany
- Translational Medicine & Clinical Pharmacology, Boehringer Ingelheim Pharma GmbH & Co. KG, Birkendorferstr.65, 88397, Biberach, Germany
| | - Yaochen Cao
- Fifth Department of Medicine (Nephrology/Endocrinology/Rheumatology/Pneumology), University Medical Centre Mannheim, University of Heidelberg, Heidelberg, Germany
- Department of Nephrology, Charité - Universitätsmedizin Berlin, Campus Mitte, Berlin, Germany
| | - Zeyu Zhang
- The First Clinical Medical College of Jinan University, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Hongwei Wu
- The First Clinical Medical College of Jinan University, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Ahmed A Hasan
- Fifth Department of Medicine (Nephrology/Endocrinology/Rheumatology/Pneumology), University Medical Centre Mannheim, University of Heidelberg, Heidelberg, Germany
| | | | - Lianghong Yin
- The First Clinical Medical College of Jinan University, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Bernhard K Krämer
- Fifth Department of Medicine (Nephrology/Endocrinology/Rheumatology/Pneumology), University Medical Centre Mannheim, University of Heidelberg, Heidelberg, Germany
- European Center for Angioscience, Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Thomas Klein
- Department of Cardiometabolic Diseases Research, Boehringer Ingelheim Pharma GmbH & Co. KG, Birkendorfer Str. 65, 88397, Biberach, Germany
| | - Xin Shi
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China
| | - Ben He
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China
| | - Linghong Shen
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China
| | - Berthold Hocher
- Fifth Department of Medicine (Nephrology/Endocrinology/Rheumatology/Pneumology), University Medical Centre Mannheim, University of Heidelberg, Heidelberg, Germany.
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, Hunan, China.
- IMD Institut Für Medizinische Diagnostik Berlin-Potsdam GbR, Berlin, Germany.
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Calcitriol Prevents Cardiovascular Repercussions in Puromycin Aminonucleoside-Induced Nephrotic Syndrome. BIOMED RESEARCH INTERNATIONAL 2018; 2018:3609645. [PMID: 29607318 PMCID: PMC5828333 DOI: 10.1155/2018/3609645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 12/12/2017] [Indexed: 11/18/2022]
Abstract
Puromycin aminonucleoside-induced nephrotic syndrome (PAN-NS) is characterized by cardiac remodeling and increased local inflammatory activity. Patients with NS and animal models of NS have vitamin D3 deficiency. The aim of the present study was to evaluate the influence of calcitriol on cardiac remodeling and local inflammatory state in PAN-NS rat model. Male Sprague-Dawley rats were injected with PAN or vehicle on day 0. PAN and control rats were divided into two subgroups for the administration of calcitriol (PAN-D and Ct-D groups) or the vehicle (PAN-V and Ct-V groups) during 21 days. On day 21, the renal function, metabolic balance, calcitriol and FGF-23 plasma levels, prohypertrophy and proinflammatory markers (ET-1, TGF-β1, TNF-α, and IL-1β), and calcium signaling molecules (PLB and SERCA-2a) were evaluated. Twenty-one days after injection, PAN-V group presented cardiac hypertrophy and a modulation of proinflammatory markers local expression. Calcitriol treatment of PAN rats prevented cardiac hypertrophy and was associated with marked reduction in the cardiac expression levels of proinflammatory markers. Our results suggest that vitamin D3 deficiency in PAN-NS may contribute to cardiac remodeling and to the increase in local inflammatory activity. Calcitriol treatment prevents both cardiac repercussions and local inflammatory processes in PAN-NS.
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Rukavina Mikusic NL, Kouyoumdzian NM, Del Mauro JS, Cao G, Trida V, Gironacci MM, Puyó AM, Toblli JE, Fernández BE, Choi MR. Effects of chronic fructose overload on renal dopaminergic system: alteration of urinary L-dopa/dopamine index correlates to hypertension and precedes kidney structural damage. J Nutr Biochem 2017; 51:47-55. [PMID: 29091814 DOI: 10.1016/j.jnutbio.2017.09.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Revised: 08/25/2017] [Accepted: 09/05/2017] [Indexed: 01/11/2023]
Abstract
Insulin resistance induced by a high-fructose diet has been associated to hypertension and renal damage. The aim of this work was to assess alterations in the urinary L-dopa/dopamine ratio over three time periods in rats with insulin resistance induced by fructose overload and its correlation with blood pressure levels and the presence of microalbuminuria and reduced nephrin expression as markers of renal structural damage. Male Sprague-Dawley rats were randomly divided into six groups: control (C) (C4, C8 and C12) with tap water to drink and fructose-overloaded (FO) rats (FO4, FO8 and FO12) with a fructose solution (10% w/v) to drink for 4, 8 and 12 weeks. A significant increase of the urinary L-dopa/dopamine ratio was found in FO rats since week 4, which positively correlated to the development of hypertension and preceded in time the onset of microalbuminuria and reduced nephrin expression observed on week 12 of treatment. The alteration of this ratio was associated to an impairment of the renal dopaminergic system, evidenced by a reduction in renal dopamine transporters and dopamine D1 receptor expression, leading to an overexpression and overactivation of the enzyme Na+, K+-ATPase with sodium retention. In conclusion, urinary L-dopa/dopamine ratio alteration in rats with fructose overload positively correlated to the development of hypertension and preceded in time the onset of renal structural damage. This is the first study to propose the use of the urinary L-dopa/dopamine index as marker of renal dysfunction that temporarily precedes kidney structural damage induced by fructose overload.
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Affiliation(s)
- Natalia L Rukavina Mikusic
- CONICET, Universidad de Buenos Aires, Instituto de Investigaciones Cardiológicas (ININCA), Marcelo T. de Alvear 2270, C1122AAJ City of Buenos Aires (CABA), Buenos Aires, Argentina; Universidad de Buenos Aires, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Junín 956, C1113AAD CABA, Buenos Aires, Argentina.
| | - Nicolás M Kouyoumdzian
- CONICET, Universidad de Buenos Aires, Instituto de Investigaciones Cardiológicas (ININCA), Marcelo T. de Alvear 2270, C1122AAJ City of Buenos Aires (CABA), Buenos Aires, Argentina; Universidad de Buenos Aires, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Junín 956, C1113AAD CABA, Buenos Aires, Argentina
| | - Julieta S Del Mauro
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Farmacología, Cátedra de Farmacología, Junín 956, C1113AAD CABA, Buenos Aires, Argentina
| | - Gabriel Cao
- CONICET, Universidad de Buenos Aires, Instituto de Investigaciones Cardiológicas (ININCA), Marcelo T. de Alvear 2270, C1122AAJ City of Buenos Aires (CABA), Buenos Aires, Argentina; Hospital Alemán, Laboratorio de Medicina Experimental, Av Pueyrredón 1640, C1118AAT CABA, Buenos Aires, Argentina
| | - Verónica Trida
- Universidad de Buenos Aires, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Junín 956, C1113AAD CABA, Buenos Aires, Argentina
| | - Mariela M Gironacci
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Química Biológica, Cátedra de Química Biológica, Junín 956, C1113AAD CABA, Buenos Aires, Argentina
| | - Ana M Puyó
- Universidad de Buenos Aires, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Junín 956, C1113AAD CABA, Buenos Aires, Argentina; Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Ciencias Biológicas, Cátedra de Anatomía e Histología, Junín 956, C1113AAD CABA, Buenos Aires, Argentina
| | - Jorge E Toblli
- CONICET, Universidad de Buenos Aires, Instituto de Investigaciones Cardiológicas (ININCA), Marcelo T. de Alvear 2270, C1122AAJ City of Buenos Aires (CABA), Buenos Aires, Argentina; Hospital Alemán, Laboratorio de Medicina Experimental, Av Pueyrredón 1640, C1118AAT CABA, Buenos Aires, Argentina
| | - Belisario E Fernández
- CONICET, Universidad de Buenos Aires, Instituto de Investigaciones Cardiológicas (ININCA), Marcelo T. de Alvear 2270, C1122AAJ City of Buenos Aires (CABA), Buenos Aires, Argentina; Universidad de Buenos Aires, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Junín 956, C1113AAD CABA, Buenos Aires, Argentina; Instituto Universitario de Ciencias de la Salud, Fundación H.A. Barceló, Av. Gral Las Heras 2191, C1127AAD CABA, Buenos Aires, Argentina
| | - Marcelo R Choi
- CONICET, Universidad de Buenos Aires, Instituto de Investigaciones Cardiológicas (ININCA), Marcelo T. de Alvear 2270, C1122AAJ City of Buenos Aires (CABA), Buenos Aires, Argentina; Universidad de Buenos Aires, Instituto de Fisiopatología y Bioquímica Clínica (INFIBIOC), Junín 956, C1113AAD CABA, Buenos Aires, Argentina; Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Ciencias Biológicas, Cátedra de Anatomía e Histología, Junín 956, C1113AAD CABA, Buenos Aires, Argentina
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Kouyoumdzian NM, Rukavina Mikusic NL, Kravetz MC, Lee BM, Carranza A, Del Mauro JS, Pandolfo M, Gironacci MM, Gorzalczany S, Toblli JE, Fernández BE, Choi MR. Atrial Natriuretic Peptide Stimulates Dopamine Tubular Transport by Organic Cation Transporters: A Novel Mechanism to Enhance Renal Sodium Excretion. PLoS One 2016; 11:e0157487. [PMID: 27392042 PMCID: PMC4938554 DOI: 10.1371/journal.pone.0157487] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 05/30/2016] [Indexed: 01/11/2023] Open
Abstract
The aim of this study was to demonstrate the effects of atrial natriuretic peptide (ANP) on organic cation transporters (OCTs) expression and activity, and its consequences on dopamine urinary levels, Na+, K+-ATPase activity and renal function. Male Sprague Dawley rats were infused with isotonic saline solution during 120 minutes and randomized in nine different groups: control, pargyline plus tolcapone (P+T), ANP, dopamine (DA), D-22, DA+D-22, ANP+D-22, ANP+DA and ANP+DA+D-22. Renal functional parameters were determined and urinary dopamine concentration was quantified by HPLC. Expression of OCTs and D1-receptor in membrane preparations from renal cortex tissues were determined by western blot and Na+, K+-ATPase activity was determined using in vitro enzyme assay. 3H-DA renal uptake was determined in vitro. Compared to P+T group, ANP and dopamine infusion increased diuresis, urinary sodium and dopamine excretion significantly. These effects were more pronounced in ANP+DA group and reversed by OCTs blockade by D-22, demonstrating that OCTs are implied in ANP stimulated-DA uptake and transport in renal tissues. The activity of Na+, K+-ATPase exhibited a similar fashion when it was measured in the same experimental groups. Although OCTs and D1-receptor protein expression were not modified by ANP, OCTs-dependent-dopamine tubular uptake was increased by ANP through activation of NPR-A receptor and protein kinase G as signaling pathway. This effect was reflected by an increase in urinary dopamine excretion, natriuresis, diuresis and decreased Na+, K+-ATPase activity. OCTs represent a novel target that links the activity of ANP and dopamine together in a common mechanism to enhance their natriuretic and diuretic effects.
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Affiliation(s)
- Nicolás M. Kouyoumdzian
- Cardiological Research Institute, National Scientific and Technical Research Council, Buenos Aires, Argentina
- Pathophysiology and Clinical Biochemistry Institute, Buenos Aires, Argentina
| | - Natalia L. Rukavina Mikusic
- Cardiological Research Institute, National Scientific and Technical Research Council, Buenos Aires, Argentina
- Pathophysiology and Clinical Biochemistry Institute, Buenos Aires, Argentina
| | - María C. Kravetz
- Department of Pharmacology, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
| | - Brenda M. Lee
- Department of General Surgery, Johns Hopkins Hospital, Baltimore, Maryland, United States of America
| | - Andrea Carranza
- Department of Pharmacology, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
| | - Julieta S. Del Mauro
- Department of Pharmacology, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
| | - Marcela Pandolfo
- Pathophysiology and Clinical Biochemistry Institute, Buenos Aires, Argentina
| | - Mariela M. Gironacci
- Department of Biological Chemistry, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
| | - Susana Gorzalczany
- Department of Pharmacology, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
| | - Jorge E. Toblli
- Cardiological Research Institute, National Scientific and Technical Research Council, Buenos Aires, Argentina
- Deutsch Hospital, Buenos Aires, Argentina
| | - Belisario E. Fernández
- Cardiological Research Institute, National Scientific and Technical Research Council, Buenos Aires, Argentina
- Pathophysiology and Clinical Biochemistry Institute, Buenos Aires, Argentina
| | - Marcelo R. Choi
- Cardiological Research Institute, National Scientific and Technical Research Council, Buenos Aires, Argentina
- Pathophysiology and Clinical Biochemistry Institute, Buenos Aires, Argentina
- Department of Anatomy and Histology, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
- Department of Pathophysiology, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
- * E-mail:
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Cano-Peñalver JL, Griera M, García-Jerez A, Hatem-Vaquero M, Ruiz-Torres MP, Rodríguez-Puyol D, Frutos SD, Rodríguez-Puyol M. Renal Integrin-Linked Kinase Depletion Induces Kidney cGMP-Axis Upregulation: Consequences on Basal and Acutely Damaged Renal Function. Mol Med 2015; 21:873-885. [PMID: 26562149 DOI: 10.2119/molmed.2015.00059] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 11/09/2015] [Indexed: 12/12/2022] Open
Abstract
Soluble guanylyl cyclase (sGC) is activated by nitric oxide (NO) and produces cGMP, which activates cGMP-dependent protein kinases (PKG) and is hydrolyzed by specific phosphodiesterases (PDE). The vasodilatory and cytoprotective capacity of cGMP-axis activation results in a therapeutic strategy for several pathologies. Integrin-linked kinase (ILK), a major scaffold protein between the extracellular matrix and intracellular signaling pathways, may modulate the expression and functionality of the cGMP-axis-related proteins. We introduce ILK as a novel modulator in renal homeostasis as well as a potential target for cisplatin (CIS)-induced acute kidney injury (AKI) improvement. We used an adult mice model of depletion of ILK (cKD-ILK), which showed basal increase of sGC and PKG expressions and activities in renal cortex when compared with wildtype (WT) littermates. Twenty-four h activation of sGC activation with NO enhanced the filtration rate in cKD-ILK. During AKI, cKD-ILK maintained the cGMP-axis upregulation with consequent filtration rates enhancement and ameliorated CIS-dependent tubular epithelial-to-mesenchymal transition and inflammation and markers. To emphasize the role of cGMP-axis upregulation due to ILK depletion, we modulated the cGMP axis under AKI in vivo and in renal cultured cells. A suboptimal dose of the PDE inhibitor ZAP enhanced the beneficial effects of the ILK depletion in AKI mice. On the other hand, CIS increased contractility-related events in cultured glomerular mesangial cells and necrosis rates in cultured tubular cells; ILK depletion protected the cells while sGC blockade with ODQ fully recovered the damage.
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Affiliation(s)
- José Luis Cano-Peñalver
- Department of Systems Biology, Physiology Unit, Universidad de Alcalà, Alcalà de Henares, Madrid, Spain.,Instituto Reina Sofia de Investigaciόn Renal and REDinREN from Instituto de Salud Carlos III, Madrid, Spain
| | - Mercedes Griera
- Department of Systems Biology, Physiology Unit, Universidad de Alcalà, Alcalà de Henares, Madrid, Spain.,Instituto Reina Sofia de Investigaciόn Renal and REDinREN from Instituto de Salud Carlos III, Madrid, Spain
| | - Andrea García-Jerez
- Department of Systems Biology, Physiology Unit, Universidad de Alcalà, Alcalà de Henares, Madrid, Spain.,Instituto Reina Sofia de Investigaciόn Renal and REDinREN from Instituto de Salud Carlos III, Madrid, Spain
| | - Marco Hatem-Vaquero
- Department of Systems Biology, Physiology Unit, Universidad de Alcalà, Alcalà de Henares, Madrid, Spain.,Instituto Reina Sofia de Investigaciόn Renal and REDinREN from Instituto de Salud Carlos III, Madrid, Spain
| | - María Piedad Ruiz-Torres
- Department of Systems Biology, Physiology Unit, Universidad de Alcalà, Alcalà de Henares, Madrid, Spain.,Instituto Reina Sofia de Investigaciόn Renal and REDinREN from Instituto de Salud Carlos III, Madrid, Spain
| | - Diego Rodríguez-Puyol
- Instituto Reina Sofia de Investigaciόn Renal and REDinREN from Instituto de Salud Carlos III, Madrid, Spain.,Biomedical Research Foundation and Nephrology Department, Hospital Príncipe de Asturias, Alcalà de Henares, Madrid, Spain
| | - Sergio de Frutos
- Department of Systems Biology, Physiology Unit, Universidad de Alcalà, Alcalà de Henares, Madrid, Spain.,Instituto Reina Sofia de Investigaciόn Renal and REDinREN from Instituto de Salud Carlos III, Madrid, Spain
| | - Manuel Rodríguez-Puyol
- Department of Systems Biology, Physiology Unit, Universidad de Alcalà, Alcalà de Henares, Madrid, Spain.,Instituto Reina Sofia de Investigaciόn Renal and REDinREN from Instituto de Salud Carlos III, Madrid, Spain
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Metabolic Serum Profiles for Patients Receiving Allogeneic Stem Cell Transplantation: The Pretransplant Profile Differs for Patients with and without Posttransplant Capillary Leak Syndrome. DISEASE MARKERS 2015; 2015:943430. [PMID: 26609191 PMCID: PMC4644835 DOI: 10.1155/2015/943430] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 10/01/2015] [Indexed: 12/25/2022]
Abstract
Allogeneic stem cell transplantation is commonly used in the treatment of younger patients with severe hematological diseases, and endothelial cells seem to be important for the development of several posttransplant complications. Capillary leak syndrome is a common early posttransplant complication where endothelial cell dysfunction probably contributes to the pathogenesis. In the present study we investigated whether the pretreatment serum metabolic profile reflects a risk of posttransplant capillary leak syndrome. We investigated the pretransplant serum levels of 766 metabolites for 80 consecutive allotransplant recipients. Patients with later capillary leak syndrome showed increased pretherapy levels of metabolites associated with endothelial dysfunction (homocitrulline, adenosine) altered renal regulation of fluid and/or electrolyte balance (betaine, methoxytyramine, and taurine) and altered vascular function (cytidine, adenosine, and methoxytyramine). Additional bioinformatical analyses showed that capillary leak syndrome was also associated with altered purine/pyrimidine metabolism (i.e., metabolites involved in vascular regulation and endothelial functions), aminoglycosylation (possibly important for endothelial cell functions), and eicosanoid metabolism (also involved in vascular regulation). Our observations are consistent with the hypothesis that the pretransplant metabolic status can be a marker for posttransplant abnormal fluid and/or electrolyte balance.
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Choi MR, Kouyoumdzian NM, Rukavina Mikusic NL, Kravetz MC, Rosón MI, Rodríguez Fermepin M, Fernández BE. Renal dopaminergic system: Pathophysiological implications and clinical perspectives. World J Nephrol 2015; 4:196-212. [PMID: 25949933 PMCID: PMC4419129 DOI: 10.5527/wjn.v4.i2.196] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 08/29/2014] [Accepted: 02/09/2015] [Indexed: 02/06/2023] Open
Abstract
Fluid homeostasis, blood pressure and redox balance in the kidney are regulated by an intricate interaction between local and systemic anti-natriuretic and natriuretic systems. Intrarenal dopamine plays a central role on this interactive network. By activating specific receptors, dopamine promotes sodium excretion and stimulates anti-oxidant and anti-inflammatory pathways. Different pathological scenarios where renal sodium excretion is dysregulated, as in nephrotic syndrome, hypertension and renal inflammation, can be associated with impaired action of renal dopamine including alteration in biosynthesis, dopamine receptor expression and signal transduction. Given its properties on the regulation of renal blood flow and sodium excretion, exogenous dopamine has been postulated as a potential therapeutic strategy to prevent renal failure in critically ill patients. The aim of this review is to update and discuss on the most recent findings about renal dopaminergic system and its role in several diseases involving the kidneys and the potential use of dopamine as a nephroprotective agent.
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Atrial natriuretic peptide and renal dopaminergic system: a positive friendly relationship? BIOMED RESEARCH INTERNATIONAL 2014; 2014:710781. [PMID: 25013796 PMCID: PMC4075025 DOI: 10.1155/2014/710781] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 05/12/2014] [Accepted: 05/12/2014] [Indexed: 01/11/2023]
Abstract
Sodium metabolism by the kidney is accomplished by an intricate interaction between signals from extrarenal and intrarenal sources and between antinatriuretic and natriuretic factors. Renal dopamine plays a central role in this interactive network. The natriuretic hormones, such as the atrial natriuretic peptide, mediate some of their effects by affecting the renal dopaminergic system. Renal dopaminergic tonus can be modulated at different steps of dopamine metabolism (synthesis, uptake, release, catabolism, and receptor sensitization) which can be regulated by the atrial natriuretic peptide. At tubular level, dopamine and atrial natriuretic peptide act together in a concerted manner to promote sodium excretion, especially through the overinhibition of Na+, K+-ATPase activity. In this way, different pathological scenarios where renal sodium excretion is dysregulated, as in nephrotic syndrome or hypertension, are associated with impaired action of renal dopamine and/or atrial natriuretic peptide, or as a result of impaired interaction between these two natriuretic systems. The aim of this review is to update and comment on the most recent evidences demonstrating how the renal dopaminergic system interacts with atrial natriuretic peptide to control renal physiology and blood pressure through different regulatory pathways.
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