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Honetschlägerová Z, Husková Z, Kikerlová S, Sadowski J, Kompanowska-Jezierska E, Táborský M, Vaňourková Z, Kujal P, Červenka L. Renal sympathetic denervation improves pressure-natriuresis relationship in cardiorenal syndrome: insight from studies with Ren-2 transgenic hypertensive rats with volume overload induced using aorto-caval fistula. Hypertens Res 2024; 47:998-1016. [PMID: 38302775 PMCID: PMC10994851 DOI: 10.1038/s41440-024-01583-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 12/20/2023] [Accepted: 12/24/2023] [Indexed: 02/03/2024]
Abstract
The aim was to evaluate the effects of renal denervation (RDN) on autoregulation of renal hemodynamics and the pressure-natriuresis relationship in Ren-2 transgenic rats (TGR) with aorto-caval fistula (ACF)-induced heart failure (HF). RDN was performed one week after creation of ACF or sham-operation. Animals were prepared for evaluation of autoregulatory capacity of renal blood flow (RBF) and glomerular filtration rate (GFR), and of the pressure-natriuresis characteristics after stepwise changes in renal arterial pressure (RAP) induced by aortic clamping. Their basal values of blood pressure and renal function were significantly lower than with innervated sham-operated TGR (p < 0.05 in all cases): mean arterial pressure (MAP) (115 ± 2 vs. 160 ± 3 mmHg), RBF (6.91 ± 0.33 vs. 10.87 ± 0.38 ml.min-1.g-1), urine flow (UF) (11.3 ± 1.79 vs. 43.17 ± 3.24 µl.min-1.g-1) and absolute sodium excretion (UNaV) (1.08 ± 0.27 vs, 6.38 ± 0.76 µmol.min-1.g-1). After denervation ACF TGR showed improved autoregulation of RBF: at lowest RAP level (80 mmHg) the value was higher than in innervated ACF TGR (6.92 ± 0.26 vs. 4.54 ± 0.22 ml.min-1.g-1, p < 0.05). Also, the pressure-natriuresis relationship was markedly improved after RDN: at the RAP of 80 mmHg UF equaled 4.31 ± 0.99 vs. 0.26 ± 0.09 µl.min-1.g-1 recorded in innervated ACF TGR, UNaV was 0.31 ± 0.05 vs. 0.04 ± 0.01 µmol min-1.g-1 (p < 0.05 in all cases). In conclusion, in our model of hypertensive rat with ACF-induced HF, RDN improved autoregulatory capacity of RBF and the pressure-natriuresis relationship when measured at the stage of HF decompensation.
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Affiliation(s)
- Zuzana Honetschlägerová
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Zuzana Husková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Soňa Kikerlová
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - Elzbieta Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - Miloš Táborský
- Department of Internal Medicine I, Cardiology, University Hospital Olomouc and Palacký University, Olomouc, Czech Republic
| | - Zdenka Vaňourková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Petr Kujal
- Department of Pathology, 3rd Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Luděk Červenka
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
- Department of Internal Medicine I, Cardiology, University Hospital Olomouc and Palacký University, Olomouc, Czech Republic.
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Kolesár DM, Kujal P, Mrázová I, Pokorný M, Škaroupková P, Sadowski J, Červenka L, Netuka I. Sex-Linked Differences in Cardiac Atrophy After Mechanical Unloading Induced by Heterotopic Heart Transplantation. Physiol Res 2024; 73:9-25. [PMID: 38466001 PMCID: PMC11019613 DOI: 10.33549/physiolres.935217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 10/23/2023] [Indexed: 04/26/2024] Open
Abstract
No information is available about sex-related differences in unloading-induced cardiac atrophy. We aimed to compare the course of unloading-induced cardiac atrophy in intact (without gonadectomy) male and female rats, and in animals after gonadectomy, to obtain insight into the influence of sex hormones on this process. Heterotopic heart transplantation (HT((x)) was used as a model for heart unloading. Cardiac atrophy was assessed as the weight ratio of heterotopically transplanted heart weight (HW) to the native HW on days 7 and 14 after HTx in intact male and female rats. In separate experimental groups, gonadectomy was performed in male and female recipient animals 28 days before HT(x) and the course of cardiac atrophy was again evaluated on days 7 and 14 after HT(x). In intact male rats, HT(x) resulted in significantly greater decreases in whole HW when compared to intact female rats. The dynamics of the left ventricle (LV) and right ventricle (RV) atrophy after HT(x) was quite similar to that of whole hearts. Gonadectomy did not have any significant effect on the decreases in whole HW, LV, and RV weights, with similar results in male and female rats. Our results show that the development of unloading-induced cardiac atrophy is substantially reduced in female rats when compared to male rats. Since gonadectomy did not alter the course of cardiac atrophy after HTx, similarly in both male and female rats, we conclude that sex-linked differences in the development of unloading-induced cardiac atrophy are not caused by the activity of sex hormones.
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Affiliation(s)
- D M Kolesár
- Department of Cardiovascular Surgery, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
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Badzynska B, Baranowska I, Sadowski J. Tonic action of endothelin type B and dopamine D3 receptors in spontaneously hypertensive and deoxycorticosterone acetate-salt hypertensive rats: effects of intrarenally applied selective antagonists. J Physiol Pharmacol 2024; 75. [PMID: 38583435 DOI: 10.26402/jpp.2024.1.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 02/29/2024] [Indexed: 04/09/2024]
Abstract
Endothelins and renal dopamine contribute to control of renal function and arterial pressure in health and various forms of experimental hypertension, the action is mediated by tonic activity of specific receptors. We determined the action mediated by endothelin type B and by dopamine D3 receptors (ETB-R, D3-R) in anaesthetized spontaneously hypertensive (SHR) and in deoxycorticosterone acetate (DOCA)-salt hypertensive rats. In rats of both hypertension models infused during 60 min into the interstitium of in situ kidney were either ETB-R antagonist, BQ788 (0.67 mg kg-1 BW h-1) or D3-R antagonist, GR103691 (0.2 mg kg-1 BW h-1). Arterial pressure (MAP), renal artery blood flow (RBF, transonic probe) and renal medullary blood flow (MBF, laser-Doppler) were measured along with sodium, water and total solute excretion (UNaV, V, UosmV). Experiments with ETB-R blockade confirmed their tonic vasodilator action in the whole kidney (RBF) and medulla (MBF) in both hypertension models. In SHR only, the first evidence was provided that ETB-R specifically increases transtubular backflux of non-electrolyte solutes. In DOCA-salt rats ETB-R blockade caused an early decrease in water and salt transport whereas an increase was often reported from many previous studies. The most striking effect of D3-R blockade in SHR was a selective increase in MBF, which strongly suggested tonic vasoconstrictor action of these receptors in the renal medulla; this speaks against prevailing opinion that D3 receptors are virtually inactive in SHR. In our model variant of DOCA-salt rats of D3-R blockade clearly caused a rapid major increase in MAP in parallel with depression of renal haemodynamics.
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Affiliation(s)
- B Badzynska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - I Baranowska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland.
| | - J Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
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Dad S, Dziawa P, Zajkowska-Pietrzak W, Kret S, Kozłowski M, Wójcik M, Sadowski J. Axially lattice-matched wurtzite/rock-salt GaAs/Pb 1-xSn xTe nanowires. Sci Rep 2024; 14:589. [PMID: 38182872 PMCID: PMC10770406 DOI: 10.1038/s41598-024-51200-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 01/02/2024] [Indexed: 01/07/2024] Open
Abstract
We investigate the full and half-shells of Pb1-xSnxTe topological crystalline insulator deposited by molecular beam epitaxy on the sidewalls of wurtzite GaAs nanowires (NWs). Due to the distinct orientation of the IV-VI shell with respect to the III-V core the lattice mismatch between both materials along the nanowire axis is less than 4%. The Pb1-xSnxTe solid solution is chosen due to the topological crystalline insulator properties above some critical concentrations of Sn (x ≥ 0.36). The IV-VI shells are grown with different compositions spanning from binary SnTe, through Pb1-xSnxTe with decreasing x value down to binary PbTe (x = 0). The samples are analysed by scanning transmission electron microscopy, which reveals the presence of (110) or (100) oriented binary PbTe and (100) Pb1-xSnxTe on the sidewalls of wurtzite GaAs NWs.
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Affiliation(s)
- Sania Dad
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02-668, Warsaw, Poland.
| | - Piotr Dziawa
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02-668, Warsaw, Poland
| | | | - Sławomir Kret
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02-668, Warsaw, Poland
| | - Mirosław Kozłowski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02-668, Warsaw, Poland
| | - Maciej Wójcik
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02-668, Warsaw, Poland
| | - Janusz Sadowski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02-668, Warsaw, Poland.
- Faculty of Physics, University of Warsaw, Pasteura 5, 02093, Warsaw, Poland.
- Ensemble3 Centre of Excellence, Wolczynska Str. 133, 01-919, Warsaw, Poland.
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Yastrubchak O, Tataryn N, Gluba L, Mamykin S, Sadowski J, Andrearczyk T, Domagala JZ, Kondratenko O, Romanyuk V, Fedchenko O, Lytvynenko Y, Tkach O, Vasilyev D, Babenkov S, Medjanik K, Gas K, Sawicki M, Wosinski T, Schönhense G, Elmers HJ. Influence of Bi doping on the electronic structure of (Ga,Mn)As epitaxial layers. Sci Rep 2023; 13:17278. [PMID: 37828106 PMCID: PMC10570295 DOI: 10.1038/s41598-023-43702-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 09/27/2023] [Indexed: 10/14/2023] Open
Abstract
The influence of the addition of Bi to the dilute ferromagnetic semiconductor (Ga,Mn)As on its electronic structure as well as on its magnetic and structural properties has been studied. Epitaxial (Ga,Mn)(Bi,As) layers of high structural perfection have been grown using low-temperature molecular-beam epitaxy. Post-growth annealing of the samples improves their structural and magnetic properties and increases the hole concentration in the layers. Hard X-ray angle-resolved photoemission spectroscopy reveals a strongly dispersing band in the Mn-doped layers, which crosses the Fermi energy and is caused by the high concentration of Mn-induced itinerant holes located in the valence band. An increased density of states near the Fermi level is attributed to additional localized Mn states. In addition to a decrease in the chemical potential with increasing Mn doping, we find significant changes in the valence band caused by the incorporation of a small atomic fraction of Bi atoms. The spin-orbit split-off band is shifted to higher binding energies, which is inconsistent with the impurity band model of the band structure in (Ga,Mn)As. Spectroscopic ellipsometry and modulation photoreflectance spectroscopy results confirm the valence band modifications in the investigated layers.
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Affiliation(s)
- Oksana Yastrubchak
- V. E. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, Kyiv, 03028, Ukraine.
| | - Nataliia Tataryn
- V. E. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, Kyiv, 03028, Ukraine
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02668, Warsaw, Poland
| | - Lukasz Gluba
- Institute of Physics, Maria Curie-Sklodowska University in Lublin, Pl. M. Curie-Skłodowskiej 1, 20031, Lublin, Poland
| | - Sergii Mamykin
- V. E. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, Kyiv, 03028, Ukraine
| | - Janusz Sadowski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02668, Warsaw, Poland
| | - Tomasz Andrearczyk
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02668, Warsaw, Poland
| | - Jaroslaw Z Domagala
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02668, Warsaw, Poland
| | - Olga Kondratenko
- V. E. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, Kyiv, 03028, Ukraine
| | - Volodymyr Romanyuk
- V. E. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, Kyiv, 03028, Ukraine
| | - Olena Fedchenko
- Johannes Gutenberg-Universität, Institut für Physik, 55128, Mainz, Germany
| | - Yaryna Lytvynenko
- Johannes Gutenberg-Universität, Institut für Physik, 55128, Mainz, Germany
- Institute of Magnetism of the National Academy of Sciences of Ukraine and Ministry of Education and Science of Ukraine, Kyiv, 03142, Ukraine
| | - Olena Tkach
- Johannes Gutenberg-Universität, Institut für Physik, 55128, Mainz, Germany
| | - Dmitry Vasilyev
- Johannes Gutenberg-Universität, Institut für Physik, 55128, Mainz, Germany
| | - Sergey Babenkov
- Johannes Gutenberg-Universität, Institut für Physik, 55128, Mainz, Germany
| | - Katerina Medjanik
- Johannes Gutenberg-Universität, Institut für Physik, 55128, Mainz, Germany
| | - Katarzyna Gas
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02668, Warsaw, Poland
| | - Maciej Sawicki
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02668, Warsaw, Poland
| | - Tadeusz Wosinski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02668, Warsaw, Poland
| | - Gerd Schönhense
- Johannes Gutenberg-Universität, Institut für Physik, 55128, Mainz, Germany
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Honetschlägerová Z, Sadowski J, Kompanowska-Jezierska E, Maxová H, Táborský M, Kujal P, Červenka L. Impaired renal autoregulation and pressure-natriuresis: any role in the development of heart failure in normotensive and angiotensin II-dependent hypertensive rats? Hypertens Res 2023; 46:2340-2355. [PMID: 37592042 PMCID: PMC10550820 DOI: 10.1038/s41440-023-01401-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 06/30/2023] [Accepted: 07/28/2023] [Indexed: 08/19/2023]
Abstract
The aim of the present study was to assess the autoregulatory capacity of renal blood flow (RBF) and of the pressure-natriuresis characteristics in the early phase of heart failure (HF) in rats, normotensive and with angiotensin II (ANG II)-dependent hypertension. Ren-2 transgenic rats (TGR) were employed as a model of ANG II-dependent hypertension. HF was induced by creating the aorto-caval fistula (ACF). One week after ACF creation or sham-operation, the animals were prepared for studies evaluating in vivo RBF autoregulatory capacity and the pressure-natriuresis characteristics after stepwise changes in renal arterial pressure (RAP) induced by aortic clamping. In ACF TGR the basal mean arterial pressure, RBF, urine flow (UF), and absolute sodium excretion (UNaV) were all significantly lower tha n in sham-operated TGR. In the latter, reductions in renal arterial pressure (RAP) significantly decreased RBF whereas in ACF TGR they did not change. Stepwise reductions in RAP resulted in marked decreases in UF and UNaV in sham-operated as well as in ACF TGR, however, these decreases were significantly greater in the former. Our data show that compared with sham-operated TGR, ACF TGR displayed well-maintained RBF autoregulatory capacity and improved slope of the pressure-natriuresis relationship. Thus, even though in the very early HF stage renal dysfunction was demonstrable, in the HF model of ANG II-dependent hypertensive rat such dysfunction and the subsequent HF decompensation cannot be simply ascribed to impaired renal autoregulation and pressure-natriuresis relationship.
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Affiliation(s)
- Zuzana Honetschlägerová
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - Elzbieta Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - Hana Maxová
- Department of Pathophysiology, 2nd Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Miloš Táborský
- Department of Internal Medicine I, Cardiology, University Hospital Olomouc and Palacký University, Olomouc, Czech Republic
| | - Petr Kujal
- Department of Pathology, 3rd Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Luděk Červenka
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
- Department of Internal Medicine I, Cardiology, University Hospital Olomouc and Palacký University, Olomouc, Czech Republic
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Ellison M, Mangiola M, Marrari M, Bentlejewski C, Sadowski J, Zern D, Kramer CSM, Heidt S, Niemann M, Xu Q, Dipchand AI, Mahle WT, Rossano JW, Canter CE, Singh TP, Zuckerman WA, Hsu DT, Feingold B, Webber SA, Zeevi A. Immunologic risk stratification of pediatric heart transplant patients by combining HLA-EMMA and PIRCHE-II. Front Immunol 2023; 14:1110292. [PMID: 36999035 PMCID: PMC10043167 DOI: 10.3389/fimmu.2023.1110292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 02/28/2023] [Indexed: 03/16/2023] Open
Abstract
Human leukocyte antigen (HLA) molecular mismatch is a powerful biomarker of rejection. Few studies have explored its use in assessing rejection risk in heart transplant recipients. We tested the hypothesis that a combination of HLA Epitope Mismatch Algorithm (HLA-EMMA) and Predicted Indirectly Recognizable HLA Epitopes (PIRCHE-II) algorithms can improve risk stratification of pediatric heart transplant recipients. Class I and II HLA genotyping were performed by next-generation sequencing on 274 recipient/donor pairs enrolled in the Clinical Trials in Organ Transplantation in Children (CTOTC). Using high-resolution genotypes, we performed HLA molecular mismatch analysis with HLA-EMMA and PIRCHE-II, and correlated these findings with clinical outcomes. Patients without pre-formed donor specific antibody (DSA) (n=100) were used for correlations with post-transplant DSA and antibody mediated rejection (ABMR). Risk cut-offs were determined for DSA and ABMR using both algorithms. HLA-EMMA cut-offs alone predict the risk of DSA and ABMR; however, if used in combination with PIRCHE-II, the population could be further stratified into low-, intermediate-, and high-risk groups. The combination of HLA-EMMA and PIRCHE-II enables more granular immunological risk stratification. Intermediate-risk cases, like low-risk cases, are at a lower risk of DSA and ABMR. This new way of risk evaluation may facilitate individualized immunosuppression and surveillance.
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Affiliation(s)
- M. Ellison
- University of Pittsburgh Medical Center, Histocompatibility Laboratory, Pittsburgh, PA, United States
- *Correspondence: M. Ellison,
| | - M. Mangiola
- Transplant Institute, NYU Langone Health, New York University, New York, NY, United States
| | - M. Marrari
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - C. Bentlejewski
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - J. Sadowski
- University of Pittsburgh Medical Center, Histocompatibility Laboratory, Pittsburgh, PA, United States
| | - D. Zern
- University of Pittsburgh Medical Center, Histocompatibility Laboratory, Pittsburgh, PA, United States
| | | | - S. Heidt
- Department of Immunology, Leiden University Medical Center (LUMC), Leiden, Netherlands
| | - M. Niemann
- Research and Development, PIRCHE AG, Berlin, Germany
| | - Q. Xu
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - A. I. Dipchand
- Labatt Heart Centre, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - W. T. Mahle
- Children’s Healthcare of Atlanta, Emory University, Atlanta, GA, United States
| | - J. W. Rossano
- Division of Cardiology, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
| | - C. E. Canter
- Division of Cardiology, Department of Pediatrics, School of Medicine, University of Washington, Seattle, WA, United States
| | - T. P. Singh
- Department of Cardiology, Boston Children’s Hospital, Harvard Medical School, Boston, MA, United States
| | - W. A. Zuckerman
- Columbia University, Irving Medical Center, New York, NY, United States
| | - D. T. Hsu
- Division of Pediatric Cardiology, Children’s Hospital at Montefiore, Albert Einstein College of Medicine, Bronx, New York, NY, United States
| | - B. Feingold
- Department of Pediatrics, Children’s Hospital of Pittsburgh, Pittsburgh, PA, United States
| | - S. A. Webber
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, United States
| | - A. Zeevi
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
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Kala P, Vaňourková Z, Škaroupková P, Kompanowska-Jezierska E, Sadowski J, Walkowska A, Veselka J, Táborský M, Maxová H, Vaněčková I, Červenka L. Endothelin type A receptor blockade increases renoprotection in congestive heart failure combined with chronic kidney disease: Studies in 5/6 nephrectomized rats with aorto-caval fistula. Biomed Pharmacother 2023; 158:114157. [PMID: 36580726 DOI: 10.1016/j.biopha.2022.114157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 12/11/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Association of congestive heart failure (CHF) and chronic kidney disease (CKD) worsens the patient's prognosis and results in poor survival rate. The aim of this study was to examine if addition of endothelin type A (ETA) receptor antagonist to the angiotensin-converting enzyme inhibitor (ACEi) will bring additional beneficial effects in experimental rats. METHODS CKD was induced by 5/6 renal mass reduction (5/6 NX) and CHF was elicited by volume overload achieved by creation of aorto-caval fistula (ACF). The follow-up was 24 weeks after the first intervention (5/6 NX). The treatment regimens were initiated 6 weeks after 5/6 NX and 2 weeks after ACF creation. RESULTS The final survival in untreated group was 15%. The treatment with ETA receptor antagonist alone or ACEi alone and the combined treatment improved the survival rate to 64%, 71% and 75%, respectively, however, the difference between the combination and either single treatment regimen was not significant. The combined treatment exerted best renoprotection, causing additional reduction in albuminuria and reducing renal glomerular and tubulointerstitial injury as compared with ACE inhibition alone. CONCLUSIONS Our results show that treatment with ETA receptor antagonist attenuates the CKD- and CHF-related mortality, and addition of ETA receptor antagonist to the standard blockade of RAS by ACEi exhibits additional renoprotective actions.
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Affiliation(s)
- Petr Kala
- Department of Cardiology, University Hospital Motol and 2nd Faculty of Medicine, Charles University, Prague, Czech Republic; Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
| | - Zdenka Vaňourková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Petra Škaroupková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Elżbieta Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Science, Warsaw, Poland
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Science, Warsaw, Poland
| | - Agnieszka Walkowska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Science, Warsaw, Poland
| | - Josef Veselka
- Department of Cardiology, University Hospital Motol and 2nd Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Miloš Táborský
- Department of Internal Medicine I, Cardiology, University Hospital Olomouc and Palacký University, Olomouc, Czech Republic
| | - Hana Maxová
- Department of Pathophysiology, 2nd Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Ivana Vaněčková
- Institute of Physiology, Czech Academy of Sciences, Czech Republic
| | - Luděk Červenka
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic; Department of Internal Medicine I, Cardiology, University Hospital Olomouc and Palacký University, Olomouc, Czech Republic
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Andrearczyk T, Levchenko K, Sadowski J, Gas K, Avdonin A, Wróbel J, Figielski T, Sawicki M, Wosinski T. Impact of Bismuth Incorporation into (Ga,Mn)As Dilute Ferromagnetic Semiconductor on Its Magnetic Properties and Magnetoresistance. Materials (Basel) 2023; 16:788. [PMID: 36676524 PMCID: PMC9863846 DOI: 10.3390/ma16020788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/09/2023] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
The impact of bismuth incorporation into the epitaxial layer of a (Ga,Mn)As dilute ferromagnetic semiconductor on its magnetic and electromagnetic properties is studied in very thin layers of quaternary (Ga,Mn)(Bi,As) compound grown on a GaAs substrate under a compressive misfit strain. An addition of a small atomic fraction of 1% Bi atoms, substituting As atoms in the layer, predominantly enhances the spin-orbit coupling strength in its valence band. The presence of bismuth results in a small decrease in the ferromagnetic Curie temperature and a distinct increase in the coercive fields. On the other hand, the Bi incorporation into the layer strongly enhances the magnitude of negative magnetoresistance without affecting the hole concentration in the layer. The negative magnetoresistance is interpreted in terms of the suppression of weak localization in a magnetic field. Application of the weak-localization theory for two-dimensional ferromagnets by Dugaev et al. to the experimental magnetoresistance results indicates that the decrease in spin-orbit scattering length accounts for the enhanced magnetoresistance in (Ga,Mn)(Bi,As).
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Affiliation(s)
- Tomasz Andrearczyk
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Khrystyna Levchenko
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
- Faculty of Physics, University of Vienna, 1090 Vienna, Austria
| | - Janusz Sadowski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
- Department of Physics and Electrical Engineering, Linnaeus University, SE-391 82 Kalmar, Sweden
| | - Katarzyna Gas
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Andrei Avdonin
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Jerzy Wróbel
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Tadeusz Figielski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Maciej Sawicki
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
| | - Tadeusz Wosinski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
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10
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Kala P, Gawrys O, Miklovič M, Vaňourková Z, Škaroupková P, Jíchová Š, Sadowski J, Kompanowska-Jezierska E, Walkowska A, Veselka J, Táborský M, Maxová H, Vaněčková I, Červenka L. Endothelin type A receptor blockade attenuates aorto-caval fistula-induced heart failure in rats with angiotensin II-dependent hypertension. J Hypertens 2023; 41:99-114. [PMID: 36204993 PMCID: PMC9794157 DOI: 10.1097/hjh.0000000000003307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 08/06/2022] [Accepted: 09/07/2022] [Indexed: 02/01/2023]
Abstract
OBJECTIVE Evaluation of the effect of endothelin type A (ET A ) receptor blockade on the course of volume-overload heart failure in rats with angiotensin II-dependent hypertension. METHODS Ren-2 renin transgenic rats (TGR) were used as a model of hypertension. Heart failure was induced by creating an aorto-caval fistula (ACF). Selective ET A receptor blockade was achieved by atrasentan. For comparison, other rat groups received trandolapril, an angiotensin-converting enzyme inhibitor (ACEi). Animals first underwent ACF creation and 2 weeks later the treatment with atrasentan or trandolapril, alone or combined, was applied; the follow-up period was 20 weeks. RESULTS Eighteen days after creating ACF, untreated TGR began to die, and none was alive by day 79. Both atrasentan and trandolapril treatment improved the survival rate, ultimately to 56% (18 of 31 animals) and 69% (22 of 32 animals), respectively. Combined ACEi and ET A receptor blockade improved the final survival rate to 52% (17 of 33 animals). The effects of the three treatment regimens on the survival rate did not significantly differ. All three treatment regimens suppressed the development of cardiac hypertrophy and lung congestion, decreased left ventricle (LV) end-diastolic volume and LV end-diastolic pressure, and improved LV systolic contractility in ACF TGR as compared with their untreated counterparts. CONCLUSION The treatment with ET A receptor antagonist delays the onset of decompensation of volume-overload heart failure and improves the survival rate in hypertensive TGR with ACF-induced heart failure. However, the addition of ET A receptor blockade did not enhance the beneficial effects beyond those obtained with standard treatment with ACEi alone.
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Affiliation(s)
- Petr Kala
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine
- Department of Cardiology, University Hospital Motol and 2nd Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Olga Gawrys
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Science, Warsaw, Poland
| | - Matúš Miklovič
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine
| | - Zdenka Vaňourková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine
| | - Petra Škaroupková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine
| | - Šárka Jíchová
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Science, Warsaw, Poland
| | - Elzbieta Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Science, Warsaw, Poland
| | - Agnieszka Walkowska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Science, Warsaw, Poland
| | - Josef Veselka
- Department of Cardiology, University Hospital Motol and 2nd Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Miloš Táborský
- Department of Internal Medicine I, Cardiology, University Hospital Olomouc and Palacký University, Olomouc
| | - Hana Maxová
- Department of Pathophysiology, 2nd Faculty of Medicine, Charles University
| | - Ivana Vaněčková
- Institute of Physiology of the Czech Academy of Sciences, Prague, Czech Republic
| | - Luděk Červenka
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine
- Department of Internal Medicine I, Cardiology, University Hospital Olomouc and Palacký University, Olomouc
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11
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Sadowski J, Targonski R, Cyganski P, Nowek P, Starek-Stelmaszczyk M, Zajac K, Juranek J, Wojtkiewicz J, Rynkiewicz A. Remodeling of Retinal Arterioles and Carotid Arteries in Heart Failure Development—A Preliminary Study. J Clin Med 2022; 11:jcm11133721. [PMID: 35807006 PMCID: PMC9267807 DOI: 10.3390/jcm11133721] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 06/15/2022] [Accepted: 06/23/2022] [Indexed: 02/01/2023] Open
Abstract
Current data indicate that heart failure (HF) is associated with inflammation and microvascular dysfunction and remodeling. These mechanisms could be involved in HF development and progression, especially in HF with preserved ejection fraction (HFpEF). We aimed to compare structural changes in retinal arterioles and carotid arteries between HF patients and patients without heart failure. This preliminary, retrospective, case-control study included 28 participants (14 patients with HFpEF and 14 age- and sex-matched healthy controls). Carotid intima-media thickness to lumen ratio (cIMTLR) was assessed using B-mode ultrasonography. Retinal arterioles wall- to-lumen ratio (rWLR) was assessed by adaptive optics camera rtx1. The HF patients had higher IMTLR (Dmedian [HFpEF–control group] 0.07, p = 0.01) and eWLR (Dmedian 0.03, p = 0.001) in comparison to patients without HF. In the whole study group, rWLR correlated significantly with IMTLR (r = 0.739, p = 0.001). Prevalence of arterial hypertension was similar in both groups, however, patients with HF had a significantly lower office, central and 24-hour ambulatory blood pressure (systolic Dmedian −21 to −18 mmHg; diastolic Dmedian −23 to −10 mmHg). Our data suggests gradual and simultaneous progression of vascular remodeling in both retinal arterioles and carotid arteries in HFpEF patients. This process could be a marker of HF development. Significantly lower blood pressure values in HF group may indicate that vascular remodeling could be independent of BP control. Nevertheless, further and larger prospective studies allowing to reduce the impact of confounding and address temporality are warranted.
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Affiliation(s)
- Janusz Sadowski
- Department of Cardiology and Internal Medicine, School of Medicine, University of Warmia and Mazury, 10-045 Olsztyn, Poland; (R.T.); (P.C.); (P.N.); (M.S.-S.); (K.Z.)
- Correspondence: (J.S.); (J.W.); (A.R.); Tel.: +48-89-532-62-86 (A.R.)
| | - Ryszard Targonski
- Department of Cardiology and Internal Medicine, School of Medicine, University of Warmia and Mazury, 10-045 Olsztyn, Poland; (R.T.); (P.C.); (P.N.); (M.S.-S.); (K.Z.)
| | - Piotr Cyganski
- Department of Cardiology and Internal Medicine, School of Medicine, University of Warmia and Mazury, 10-045 Olsztyn, Poland; (R.T.); (P.C.); (P.N.); (M.S.-S.); (K.Z.)
| | - Paulina Nowek
- Department of Cardiology and Internal Medicine, School of Medicine, University of Warmia and Mazury, 10-045 Olsztyn, Poland; (R.T.); (P.C.); (P.N.); (M.S.-S.); (K.Z.)
| | - Magdalena Starek-Stelmaszczyk
- Department of Cardiology and Internal Medicine, School of Medicine, University of Warmia and Mazury, 10-045 Olsztyn, Poland; (R.T.); (P.C.); (P.N.); (M.S.-S.); (K.Z.)
| | - Katarzyna Zajac
- Department of Cardiology and Internal Medicine, School of Medicine, University of Warmia and Mazury, 10-045 Olsztyn, Poland; (R.T.); (P.C.); (P.N.); (M.S.-S.); (K.Z.)
| | - Judyta Juranek
- Department of Human Physiology and Pathophysiology, School of Medicine, University of Warmia and Masuria, 10-900 Olsztyn, Poland;
| | - Joanna Wojtkiewicz
- Department of Human Physiology and Pathophysiology, School of Medicine, University of Warmia and Masuria, 10-900 Olsztyn, Poland;
- Correspondence: (J.S.); (J.W.); (A.R.); Tel.: +48-89-532-62-86 (A.R.)
| | - Andrzej Rynkiewicz
- Department of Cardiology and Internal Medicine, School of Medicine, University of Warmia and Mazury, 10-045 Olsztyn, Poland; (R.T.); (P.C.); (P.N.); (M.S.-S.); (K.Z.)
- Correspondence: (J.S.); (J.W.); (A.R.); Tel.: +48-89-532-62-86 (A.R.)
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12
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Sadowski J, Kaleta A, Kryvyi S, Janaszko D, Kurowska B, Bilska M, Wojciechowski T, Domagala JZ, Sanchez AM, Kret S. Bi incorporation and segregation in the MBE-grown GaAs-(Ga,Al)As-Ga(As,Bi) core-shell nanowires. Sci Rep 2022; 12:6007. [PMID: 35397635 PMCID: PMC8994761 DOI: 10.1038/s41598-022-09847-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Accepted: 03/29/2022] [Indexed: 11/09/2022] Open
Abstract
Incorporation of Bi into GaAs-(Ga,Al)As-Ga(As,Bi) core-shell nanowires grown by molecular beam epitaxy is studied with transmission electron microscopy. Nanowires are grown on GaAs(111)B substrates with Au-droplet assisted mode. Bi-doped shells are grown at low temperature (300 °C) with a close to stoichiometric Ga/As flux ratio. At low Bi fluxes, the Ga(As,Bi) shells are smooth, with Bi completely incorporated into the shells. Higher Bi fluxes (Bi/As flux ratio ~ 4%) led to partial segregation of Bi as droplets on the nanowires sidewalls, preferentially located at the nanowire segments with wurtzite structure. We demonstrate that such Bi droplets on the sidewalls act as catalysts for the growth of branches perpendicular to the GaAs trunks. Due to the tunability between zinc-blende and wurtzite polytypes by changing the nanowire growth conditions, this effect enables fabrication of branched nanowire architectures with branches generated from selected (wurtzite) nanowire segments.
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Affiliation(s)
- Janusz Sadowski
- Institute of Physics Polish Academy of Sciences, Aleja Lotnikow 32/46, 02668, Warsaw, Poland. .,Department of Physics and Electrical Engineering, Linnaeus University, 39182, Kalmar, Sweden.
| | - Anna Kaleta
- Institute of Physics Polish Academy of Sciences, Aleja Lotnikow 32/46, 02668, Warsaw, Poland
| | - Serhii Kryvyi
- Institute of Physics Polish Academy of Sciences, Aleja Lotnikow 32/46, 02668, Warsaw, Poland
| | - Dorota Janaszko
- Institute of Physics Polish Academy of Sciences, Aleja Lotnikow 32/46, 02668, Warsaw, Poland
| | - Bogusława Kurowska
- Institute of Physics Polish Academy of Sciences, Aleja Lotnikow 32/46, 02668, Warsaw, Poland
| | - Marta Bilska
- Institute of Physics Polish Academy of Sciences, Aleja Lotnikow 32/46, 02668, Warsaw, Poland
| | - Tomasz Wojciechowski
- Institute of Physics Polish Academy of Sciences, Aleja Lotnikow 32/46, 02668, Warsaw, Poland.,International Research Centre MagTop, Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02668, Warsaw, Poland
| | - Jarosław Z Domagala
- Institute of Physics Polish Academy of Sciences, Aleja Lotnikow 32/46, 02668, Warsaw, Poland
| | - Ana M Sanchez
- Department of Physics, University of Warwick, Coventry, CV4 7AL, UK
| | - Sławomir Kret
- Institute of Physics Polish Academy of Sciences, Aleja Lotnikow 32/46, 02668, Warsaw, Poland.
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13
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Mangiola M, Ellison M, Marrari M, Bentlejewski C, Sadowski J, Zern D, Niemann M, Feingold B, Webber S, Zeevi A, Dipchand AI, Lamour JM, Mahle WT, Rossano JW, Scheel JN, Singh TP, Zuckerman WA. Immunologic Risk Stratification of Pediatric Heart Transplant Patients by Combining Hlamatchmaker and PIRCHE-II. J Heart Lung Transplant 2022; 41:952-960. [DOI: 10.1016/j.healun.2022.03.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 03/23/2022] [Accepted: 03/24/2022] [Indexed: 10/18/2022] Open
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14
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Bądzyńska B, Vaneckova I, Sadowski J, Hojná S, Kompanowska-Jezierska E. Effects of systemic and renal intramedullary endothelin-1 receptor blockade on tissue NO and intrarenal hemodynamics in normotensive and hypertensive rats. Eur J Pharmacol 2021; 910:174445. [PMID: 34492284 DOI: 10.1016/j.ejphar.2021.174445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 07/28/2021] [Accepted: 08/24/2021] [Indexed: 10/20/2022]
Abstract
Endothelin 1 (ET-1) seems essential in salt-dependent hypertension, and activation of ETA receptors causes renal vasoconstriction. However, the response in the renal medulla and the role of tissue NO availability has never been adequately explored in vivo. We examined effects of ETA and ETB receptor blockade (atrasentan and BQ788) on blood pressure (MAP), medullary blood flow (MBF) and medullary tissue NO. Effects of systemic and intramedullary blocker application were compared in anesthetized normotensive ET-1-pretreated Sprague-Dawley rats (S-D), in salt-dependent hypertension (HS/UNX) and in spontaneously hypertensive rats (SHR). Total renal blood flow (RBF) was measured using a Transonic renal artery probe, MBF as laser-Doppler flux, and tissue NO signal using selective electrodes. In normotensive rats ET-1 significantly increased MAP, decreased RBF (-20%) and renal medullary NO. In HS/UNX rats atrasentan decreased MAP and increased medullary NO, earlier and more profoundly with intravenous infusion. In SHR atrasentan decreased MAP, more effectively with intravenous infusion; the increase in tissue NO (∼10%) was similar with both routes; however, only intramedullary atrasentan increased MBF. No consistent responses to BQ788 were seen. We confirmed dominant role of ETA receptors in regulation of blood pressure and renal hemodynamics in normotensive and hypertensive rats and provided novel evidence for the role of ETA in control of intrarenal NO bioavailability in salt-dependent and spontaneous hypertension. Under conditions of activation of the endothelin system ETB stimulation preserved medullary perfusion.
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Affiliation(s)
- Bożena Bądzyńska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, A. Pawińskiego 5, 02-106, Warsaw, Poland.
| | - Ivana Vaneckova
- Laboratory of Experimental Hypertension, Institute of Physiology, Czech Academy of Sciences, Czech Republic.
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, A. Pawińskiego 5, 02-106, Warsaw, Poland.
| | - Silvie Hojná
- Laboratory of Experimental Hypertension, Institute of Physiology, Czech Academy of Sciences, Czech Republic.
| | - Elżbieta Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, A. Pawińskiego 5, 02-106, Warsaw, Poland.
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15
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Jíchová Š, Gawryś O, Kompanowska-Jezierska E, Sadowski J, Melenovský V, Hošková L, Červenka L, Kala P, Veselka J, Čertíková Chábová V. Kidney Response to Chemotherapy-Induced Heart Failure: mRNA Analysis in Normotensive and Ren-2 Transgenic Hypertensive Rats. Int J Mol Sci 2021; 22:8475. [PMID: 34445179 PMCID: PMC8395170 DOI: 10.3390/ijms22168475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 08/02/2021] [Accepted: 08/03/2021] [Indexed: 11/21/2022] Open
Abstract
The aim of the present study was to perform kidney messenger ribonucleic acid (mRNA) analysis in normotensive, Hannover Sprague-Dawley (HanSD) rats and hypertensive, Ren-2 renin transgenic rats (TGR) after doxorubicin-induced heart failure (HF) with specific focus on genes that are implicated in the pathophysiology of HF-associated cardiorenal syndrome. We found that in both strains renin and angiotensin-converting enzyme mRNA expressions were upregulated indicating that the vasoconstrictor axis of the renin-angiotensin system was activated. We found that pre-proendothelin-1, endothelin-converting enzyme type 1 and endothelin type A receptor mRNA expressions were upregulated in HanSD rats, but not in TGR, suggesting the activation of endothelin system in HanSD rats, but not in TGR. We found that mRNA expression of cytochrome P-450 subfamily 2C23 was downregulated in TGR and not in HanSD rats, suggesting the deficiency in the intrarenal cytochrome P450-dependent pathway of arachidonic acid metabolism in TGR. These results should be the basis for future studies evaluating the pathophysiology of cardiorenal syndrome secondary to chemotherapy-induced HF in order to potentially develop new therapeutic approaches.
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Affiliation(s)
- Šárka Jíchová
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic; (Š.J.); (L.Č.); (P.K.)
| | - Olga Gawryś
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, PL02-106 Warsaw, Poland; (O.G.); (E.K.-J.); (J.S.)
| | - Elżbieta Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, PL02-106 Warsaw, Poland; (O.G.); (E.K.-J.); (J.S.)
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, PL02-106 Warsaw, Poland; (O.G.); (E.K.-J.); (J.S.)
| | - Vojtěch Melenovský
- Department of Cardiology, Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic; (V.M.); (L.H.)
| | - Lenka Hošková
- Department of Cardiology, Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic; (V.M.); (L.H.)
| | - Luděk Červenka
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic; (Š.J.); (L.Č.); (P.K.)
- Department of Pathophysiology, 2nd Faculty of Medicine, Charles University, 15006 Prague, Czech Republic
| | - Petr Kala
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic; (Š.J.); (L.Č.); (P.K.)
- Department of Pathophysiology, 2nd Faculty of Medicine, Charles University, 15006 Prague, Czech Republic
- Department of Cardiology, University Hospital Motol and 2nd Faculty of Medicine, Charles University, 15006 Prague, Czech Republic;
| | - Josef Veselka
- Department of Cardiology, University Hospital Motol and 2nd Faculty of Medicine, Charles University, 15006 Prague, Czech Republic;
| | - Věra Čertíková Chábová
- Department of Nephrology, 1st Faculty of Medicine, Charles University, 12108 Prague, Czech Republic
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Roszkowska-Chojecka MM, Baranowska I, Gawrys O, Sadowski J, Walkowska A, Kalisz M, Litwiniuk A, Kompanowska-Jezierska E. Role of chymase in blood pressure control, plasma and tissue angiotensin II, renal Haemodynamics, and excretion in spontaneously hypertensive rats. Clin Exp Hypertens 2021; 43:392-401. [PMID: 33687310 DOI: 10.1080/10641963.2021.1890762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 01/05/2021] [Accepted: 02/05/2021] [Indexed: 01/22/2023]
Abstract
Background: Chymase generates angiotensin II (ANG II) independently of angiotensin-converting enzyme in tissues and it contributes to vascular remodeling and development of hypertension, however the exact mechanism of its action is unclear. Methods: Hence, the effects of chymase inhibition were examined in anesthetized spontaneously hypertensive rats (SHR) in two stages of the disease development, ie. pre-hypertensive (SHR7) and with established hypertension (SHR16). Chymostatin, a commercial chymase inhibitor, was infused intravenously alone or in subsequent groups co-infused with captopril. Results: Mean blood pressure (MBP), total renal blood flow (RBF) and ANG II content (plasma and tissues) were measured. In SHR16 chymase blockade significantly decreased MBP (-6%) and plasma (-38%), kidney (-71%) and heart (-52%) ANG II levels. In SHR7 chymostatin did not influence MBP or RBF, but significantly decreased heart ANG II level. Conclusion: Jointly, functional studies and ANG II determinations support the evidence that in SHR chymase can raise plasma ANG II and contribute to blood pressure elevation. We propose that addition of chymase blockade to ACE inhibition could be a promising approach in the treatment of hypertensive patients resistant to therapy with ACE-inhibitors alone.
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Affiliation(s)
- Malwina M Roszkowska-Chojecka
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - Iwona Baranowska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - Olga Gawrys
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - Agnieszka Walkowska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - Malgorzata Kalisz
- Department of Clinical Neuroendocrinology, Centre of Postgraduate Medical Education, Warsaw, Poland
| | - Anna Litwiniuk
- Department of Clinical Neuroendocrinology, Centre of Postgraduate Medical Education, Warsaw, Poland
| | - Elzbieta Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
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17
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Bądzyńska B, Sadowski J. Reinvestigation of the tonic natriuretic action of intrarenal dopamine: comparison of two variants of salt-dependent hypertension and spontaneously hypertensive rats. Clin Exp Pharmacol Physiol 2021; 48:1280-1287. [PMID: 34056731 DOI: 10.1111/1440-1681.13529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 05/20/2021] [Accepted: 05/26/2021] [Indexed: 01/11/2023]
Abstract
The intrarenal dopamine system has been thoroughly investigated at all levels, especially its role in salt-dependent and other forms of hypertension. However, the evidence regarding dopamine's tonic influence on renal tubular transport of sodium remains equivocal. We reinvestigated its tonic influence on sodium excretion and systemic and renal haemodynamics. Early effects of dopamine D1 receptor blockade using 90-min Schering 23390 (SCH) infusion were examined in anaesthetized rats on 7 days' high salt diet (HS), early uninephrectomized rats on 14 days' HS diet, drinking 1% saline (HS/UNX), and in spontaneously hypertensive rats (SHR). In the HS group (baseline BP ~133 mm Hg) renal intracortical SCH promptly decreased sodium, water and total solute excretion (UNa V, V, Uosm V), with significant difference from the solvent-infused group. BP and renal artery blood flow (RBF, Transonic probe) did not change. In HS/UNX model (baseline BP ~150 mm Hg), characterized by hypertrophy of the remaining kidney, the excretion parameters only tended to decrease whereas SCH induced an ~20% fall in RBF. In SHR (BP ~180 mm Hg), UNa V and V tended to increase in solvent-infused rats; this increasing tendency was abolished by SCH infusion. During experiments the renal vascular resistance increased significantly in SCH- and solvent-infused SHR. Despite some contradictory findings regarding the genuine tonic control of renal excretion by intrarenal dopamine, our results clearly support such role in rats on HS diet and in SHR, the model resembling human essential hypertension. The observations strengthen the experimental basis and the rationale for targeting the intrarenal dopamine system in attempts to combat arterial hypertension.
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Affiliation(s)
- Bożena Bądzyńska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
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Husková Z, Kikerlová S, Sadowski J, Alánová P, Sedláková L, Papoušek F, Neckář J. Increased Endogenous Activity of the Renin-Angiotensin System Reduces Infarct Size in the Rats with Early Angiotensin II-dependent Hypertension which Survive the Acute Ischemia/Reperfusion Injury. Front Pharmacol 2021; 12:679060. [PMID: 34122103 PMCID: PMC8193500 DOI: 10.3389/fphar.2021.679060] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 05/11/2021] [Indexed: 01/13/2023] Open
Abstract
We investigated the role of the interaction between hypertension and the renin-angiotensin system in the pathophysiology of myocardial ischemia/reperfusion injury. We hypothesized that in the early phase of angiotensin II (ANG II)-dependent hypertension with developed left ventricular hypertrophy, cardioprotective mechanism(s) are fully activated. The experiments were performed in transgenic rats with inducible hypertension, noninduced rats served as controls. The early phase of ANG II-dependent hypertension was induced by five-days (5 days) dietary indole-3-carbinol administration. Cardiac hypertrophy, ANG II and ANG 1-7 levels, protein expression of their receptors and enzymes were determined. Separate groups were subjected to acute myocardial ischemia/reperfusion injury, and infarct size and ventricular arrhythmias were assessed. Induced rats developed marked cardiac hypertrophy accompanied by elevated ANG levels. Ischemia/reperfusion mortality was significantly higher in induced than noninduced rats (52.1 and 25%, respectively). The blockade of AT1 receptors with losartan significantly increased survival rate in both groups. Myocardial infarct size was significantly reduced after 5 days induction (by 11%), without changes after losartan treatment. In conclusion, we confirmed improved cardiac tolerance to ischemia/reperfusion injury in hypertensive cardiohypertrophied rats and found that activation of AT1 receptors by locally produced ANG II in the heart was not the mechanism underlying infarct size reduction.
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Affiliation(s)
- Zuzana Husková
- Center of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Soňa Kikerlová
- Center of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Science, Warsaw, Poland
| | - Petra Alánová
- Laboratory of Developmental Cardiology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
| | - Lenka Sedláková
- Laboratory of Developmental Cardiology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
| | - František Papoušek
- Laboratory of Developmental Cardiology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
| | - Jan Neckář
- Center of Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia.,Laboratory of Developmental Cardiology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
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19
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Sobczak M, Panicz R, Eljasik P, Sadowski J, Tórz A, Żochowska-Kujawska J, Barbosa V, Dias J, Marques A. Nutritional value and sensory properties of common carp (Cyprinus carpio L.) fillets enriched with sustainable and natural feed ingredients. Food Chem Toxicol 2021; 152:112197. [PMID: 33864840 DOI: 10.1016/j.fct.2021.112197] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/24/2021] [Accepted: 04/05/2021] [Indexed: 01/21/2023]
Abstract
Declines across global fishery stocks forced aquaculture feed manufacturers to search for new and sustainable components. Therefore, the aim of study was assessing nutritional value and sensory properties of meat of common carp (Cyprinus carpio L.) fed for 116 days with two blends. The control feed contained 5% of fishmeal and vegetable oils (rapeseed and soybean) as sole fat sources. While in the experimental diet half of the fishmeal was replaced with a blend of microalgae (Spirulina sp., Chlorella sp.), macroalgae (Laminaria digitata) and vegetable oil was replaced with salmon oil. Proximate composition, energy value, fatty acid profile of meat, nutritional characteristics of fat and protein as well as culinary properties of fillets were assessed. Fillets of carp fed experimental diet had a higher level of protein, lower level of fat and energy value. Intramuscular fat of fish fed with the experimental diet had a better parameters of quality. Protein in the meat of fish from both groups was characterized by a high quality comparing to the protein standard. Our study showed that meat of carp fed with experimental feed enriched with sustainable and natural feed ingredients can be a sensorily attractive source of nutritious ingredients in the human diet.
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Affiliation(s)
- M Sobczak
- Department of Meat Science, Faculty of Food Science and Fisheries, West Pomeranian University of Technology, Szczecin, Poland.
| | - R Panicz
- Department of Meat Science, Faculty of Food Science and Fisheries, West Pomeranian University of Technology, Szczecin, Poland
| | - P Eljasik
- Department of Meat Science, Faculty of Food Science and Fisheries, West Pomeranian University of Technology, Szczecin, Poland
| | - J Sadowski
- Department of Aquatic Bioengineering and Aquaculture, Faculty of Food Science and Fisheries, West Pomeranian University of Technology, Szczecin, Poland
| | - A Tórz
- Department of Aquatic Bioengineering and Aquaculture, Faculty of Food Science and Fisheries, West Pomeranian University of Technology, Szczecin, Poland
| | - J Żochowska-Kujawska
- Department of Meat Science, Faculty of Food Science and Fisheries, West Pomeranian University of Technology, Szczecin, Poland
| | - V Barbosa
- Division of Aquaculture, Seafood Upgrading and Bioprospection, Portuguese Institute for the Sea and Atmosphere (IPMA), Lisboa, Portugal
| | - J Dias
- Sparos Lda, Olhão, Portugal
| | - A Marques
- Division of Aquaculture, Seafood Upgrading and Bioprospection, Portuguese Institute for the Sea and Atmosphere (IPMA), Lisboa, Portugal
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20
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Honetschlagerová Z, Škaroupková P, Kikerlová S, Husková Z, Maxová H, Melenovský V, Kompanowska-Jezierska E, Sadowski J, Gawrys O, Kujal P, Červenka L, Čertíková Chábová V. Effects of renal sympathetic denervation on the course of congestive heart failure combined with chronic kidney disease: Insight from studies with fawn-hooded hypertensive rats with volume overload induced using aorto-caval fistula. Clin Exp Hypertens 2021; 43:522-535. [PMID: 33783285 DOI: 10.1080/10641963.2021.1907398] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Background: The coincidence of congestive heart failure (CHF) and chronic kidney disease (CKD) results in poor survival rate. The aim of the study was to examine if renal denervation (RDN) would improve the survival rate in CHF induced by creation of aorto-caval fistula (ACF).Methods: Fawn-hooded hypertensive rats (FHH), a genetic model of spontaneous hypertension associated with CKD development, were used. Fawn-hooded low-pressure rats (FHL), without CKD, served as controls. RDN was performed 4 weeks after creation of ACF and the follow-up period was 10 weeks.Results: We found that intact (non-denervated) ACF FHH exhibited survival rate of 58.8% (20 out of 34 rats), significantly lower than in intact ACF FHL (81.3%, 26/32 rats). In intact ACF FHL albuminuria remained stable throughout the study, whereas in ACF FHH it increased significantly, up to a level 40-fold higher than the basal values. ACF FHL did not show increases in renal glomerular and tubulointerstitial injury as compared with FHL, while ACF FHH exhibited marked increases in kidney injury as compared with FHH. RDN did not improve the survival rate in either ACF FHL or ACF FHH and did not alter the course of albuminuria in ACF FHL. RDN attenuated the albuminuria, but did not reduce the kidney injury in ACF FHH.Conclusions: Our present results support the notion that even modest CKD increases CHF-related mortality. RDN did not attenuate CHF-dependent mortality in ACF FHH, it delayed the progressive rise in albuminuria, but it did not reduce the degree of kidney injury.
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Affiliation(s)
- Zuzana Honetschlagerová
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Petra Škaroupková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Soňa Kikerlová
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Zuzana Husková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Hana Maxová
- Department of Pathophysiology, Medicine, Charles University, Prague, Czech Republic
| | - Vojtěch Melenovský
- Department of Cardiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Elzbieta Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Science, Warsaw, Poland
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Science, Warsaw, Poland
| | - Olga Gawrys
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.,Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Science, Warsaw, Poland
| | - Petr Kujal
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.,Department of Pathology, Medicine, Charles University, Prague, Czech Republic
| | - Luděk Červenka
- Department of Pathophysiology, Medicine, Charles University, Prague, Czech Republic
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21
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Walkowska A, Červenka L, Imig JD, Falck JR, Sadowski J, Kompanowska-Jezierska E. Early Renal Vasodilator and Hypotensive Action of Epoxyeicosatrienoic Acid Analog (EET-A) and 20-HETE Receptor Blocker (AAA) in Spontaneously Hypertensive Rats. Front Physiol 2021; 12:622882. [PMID: 33584348 PMCID: PMC7876274 DOI: 10.3389/fphys.2021.622882] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 01/06/2021] [Indexed: 12/15/2022] Open
Abstract
Cytochrome P450 (CYP-450) metabolites of arachidonic acid: epoxyeicosatrienoic acids (EETs) and 20-hydroxyeicosatetraenoic acid (20-HETE) have established role in regulation of blood pressure (BP) and kidney function. EETs deficiency and increased renal formation of 20-HETE contribute to hypertension in spontaneously hypertensive rats (SHR). We explored the effects of 14,15-EET analog (EET-A) and of 20-HETE receptor blocker (AAA) on BP and kidney function in this model. In anesthetized SHR the responses were determined of mean arterial blood pressure (MABP), total renal (RBF), and cortical (CBF) and inner-medullary blood flows, glomerular filtration rate and renal excretion, to EET-A, 5 mg/kg, infused i.v. for 1 h to rats untreated or after blockade of endogenous EETs degradation with an inhibitor (c-AUCB) of soluble epoxide hydrolase. Also examined were the responses to AAA (10 mg/kg/h), given alone or together with EET-A. EET-A significantly increased RBF and CBF (+30% and 26%, respectively), seen already within first 30 min of infusion. The greatest increases in RBF and CBF (by about 40%) were seen after AAA, similar when given alone or combined with EET-A. MABP decreased after EET-A or AAA but not significantly after the combination thereof. In all groups, RBF, and CBF increases preceded the decrease in MABP. We found that in SHR both EET-A and AAA induced renal vasodilation but, unexpectedly, no additive effect was seen. We suggest that both agents have a definite therapeutic potential and deserve further experimental and clinical testing aimed at introduction of novel antihypertensive therapy.
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Affiliation(s)
- Agnieszka Walkowska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - Luděk Červenka
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia.,Department of Pathophysiology, 2nd Faculty of Medicine, Charles University, Prague, Czechia
| | - John D Imig
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - John R Falck
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - Elżbieta Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Warsaw, Poland
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22
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Honetschlagerová Z, Gawrys O, Jíchová Š, Škaroupková P, Kikerlová S, Vaňourková Z, Husková Z, Melenovský V, Kompanowska-Jezierska E, Sadowski J, Kolář F, Novotný J, Hejnová L, Kujal P, Červenka L. Renal Sympathetic Denervation Attenuates Congestive Heart Failure in Angiotensin II-Dependent Hypertension: Studies with Ren-2 Transgenic Hypertensive Rats with Aortocaval Fistula. Kidney Blood Press Res 2021; 46:95-113. [PMID: 33530085 DOI: 10.1159/000513071] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 11/14/2020] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE We examined if renal denervation (RDN) attenuates the progression of aortocaval fistula (ACF)-induced heart failure or improves renal hemodynamics in Ren-2 transgenic rats (TGR), a model of angiotensin II (ANG II)-dependent hypertension. METHODS Bilateral RDN was performed 1 week after creation of ACF. The animals studied were ACF TGR and sham-operated controls, and both groups were subjected to RDN or sham denervation. In separate groups, renal artery blood flow (RBF) responses were determined to intrarenal ANG II (2 and 8 ng), norepinephrine (NE) (20 and 40 ng) and acetylcholine (Ach) (10 and 40 ng) 3 weeks after ACF creation. RESULTS In nondenervated ACF TGR, the final survival rate was 10 versus 50% in RDN rats. RBF was significantly lower in ACF TGR than in sham-operated TGR (6.2 ± 0.3 vs. 9.7 ± 0.5 mL min-1 g-1, p < 0.05), the levels unaffected by RDN. Both doses of ANG II decreased RBF more in ACF TGR than in sham-operated TGR (-19 ± 3 vs. -9 ± 2% and -47 ± 3 vs. -22 ± 2%, p < 0.05 in both cases). RDN did not alter RBF responses to the lower dose, but increased it to the higher dose of ANG II in sham-operated as well as in ACF TGR. NE comparably decreased RBF in ACF TGR and sham-operated TGR, and RDN increased RBF responsiveness. Intrarenal Ach increased RBF significantly more in ACF TGR than in sham-operated TGR (29 ± 3 vs. 17 ± 3%, p < 0.05), the changes unaffected by RDN. ACF creation induced marked bilateral cardiac hypertrophy and lung congestion, both attenuated by RDN. In sham-operated but not in ACF TGR, RDN significantly decreased mean arterial pressure. CONCLUSION The results show that RDN significantly improved survival rate in ACF TGR; however, this beneficial effect was not associated with improvement of reduced RBF or with attenuation of exaggerated renal vascular responsiveness to ANG II.
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Affiliation(s)
- Zuzana Honetschlagerová
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia,
| | - Olga Gawrys
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia.,Department of Cardiology, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Šárka Jíchová
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Petra Škaroupková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Soňa Kikerlová
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Zdeňka Vaňourková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Zuzana Husková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Vojtěch Melenovský
- Department of Cardiology, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Elzbieta Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Science, Warsaw, Poland
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Science, Warsaw, Poland
| | - František Kolář
- Department of Developmental Cardiology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
| | - Jiří Novotný
- Department of Physiology, Faculty of Science, Charles University in Prague, Prague, Czechia
| | - Lucie Hejnová
- Department of Physiology, Faculty of Science, Charles University in Prague, Prague, Czechia
| | - Petr Kujal
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia.,Department of Pathology, 3rd Faculty of Medicine, Charles University, Prague, Czechia
| | - Luděk Červenka
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
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23
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Kala P, Bartušková H, Piťha J, Vaňourková Z, Kikerlová S, Jíchová Š, Melenovský V, Hošková L, Veselka J, Kompanowska-Jezierska E, Sadowski J, Gawrys O, Maxová H, Červenka L. Deleterious Effects of Hyperactivity of the Renin-Angiotensin System and Hypertension on the Course of Chemotherapy-Induced Heart Failure after Doxorubicin Administration: A Study in Ren-2 Transgenic Rat. Int J Mol Sci 2020; 21:E9337. [PMID: 33302374 PMCID: PMC7762559 DOI: 10.3390/ijms21249337] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 12/03/2020] [Accepted: 12/04/2020] [Indexed: 12/11/2022] Open
Abstract
Doxorubicin's (DOX) cardiotoxicity contributes to the development of chemotherapy-induced heart failure (HF) and new treatment strategies are in high demand. The aim of the present study was to characterize a DOX-induced model of HF in Ren-2 transgenic rats (TGR), those characterized by hypertension and hyperactivity of the renin-angiotensin-aldosterone system, and to compare the results with normotensive transgene-negative, Hannover Sprague-Dawley (HanSD) rats. DOX was administered for two weeks in a cumulative dose of 15 mg/kg. In HanSD rats DOX administration resulted in the development of an early phase of HF with the dominant symptom of bilateral cardiac atrophy demonstrable two weeks after the last DOX injection. In TGR, DOX caused substantial impairment of systolic function already at the end of the treatment, with further progression observed throughout the experiment. Additionally, two weeks after the termination of DOX treatment, TGR exhibited signs of HF characteristic for the transition stage between the compensated and decompensated phases of HF. In conclusion, we suggest that DOX-induced HF in TGR is a suitable model to study the pathophysiological aspects of chemotherapy-induced HF and to evaluate novel therapeutic strategies to combat this form of HF, which are urgently needed.
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Affiliation(s)
- Petr Kala
- Department of Cardiology, University Hospital Motol and 2nd Faculty of Medicine, Charles University, 150 06 Prague, Czech Republic;
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, 140 21 Prague, Czech Republic; (H.B.); (J.P.); (Z.V.); (S.K.); (Š.J.); (O.G.); (L.Č.)
| | - Hana Bartušková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, 140 21 Prague, Czech Republic; (H.B.); (J.P.); (Z.V.); (S.K.); (Š.J.); (O.G.); (L.Č.)
| | - Jan Piťha
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, 140 21 Prague, Czech Republic; (H.B.); (J.P.); (Z.V.); (S.K.); (Š.J.); (O.G.); (L.Č.)
| | - Zdenka Vaňourková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, 140 21 Prague, Czech Republic; (H.B.); (J.P.); (Z.V.); (S.K.); (Š.J.); (O.G.); (L.Č.)
| | - Soňa Kikerlová
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, 140 21 Prague, Czech Republic; (H.B.); (J.P.); (Z.V.); (S.K.); (Š.J.); (O.G.); (L.Č.)
| | - Šárka Jíchová
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, 140 21 Prague, Czech Republic; (H.B.); (J.P.); (Z.V.); (S.K.); (Š.J.); (O.G.); (L.Č.)
| | - Vojtěch Melenovský
- Department of Cardiology, Institute for Clinical and Experimental Medicine, 140 21 Prague, Czech Republic; (V.M.); (L.H.)
| | - Lenka Hošková
- Department of Cardiology, Institute for Clinical and Experimental Medicine, 140 21 Prague, Czech Republic; (V.M.); (L.H.)
| | - Josef Veselka
- Department of Cardiology, University Hospital Motol and 2nd Faculty of Medicine, Charles University, 150 06 Prague, Czech Republic;
| | - Elzbieta Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 01-224 Warsaw, Poland; (E.K.-J.); (J.S.)
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 01-224 Warsaw, Poland; (E.K.-J.); (J.S.)
| | - Olga Gawrys
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, 140 21 Prague, Czech Republic; (H.B.); (J.P.); (Z.V.); (S.K.); (Š.J.); (O.G.); (L.Č.)
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, 01-224 Warsaw, Poland; (E.K.-J.); (J.S.)
| | - Hana Maxová
- Department of Pathophysiology, 2nd Faculty of Medicine, Charles University, 110 00 Prague, Czech Republic;
| | - Luděk Červenka
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, 140 21 Prague, Czech Republic; (H.B.); (J.P.); (Z.V.); (S.K.); (Š.J.); (O.G.); (L.Č.)
- Department of Pathophysiology, 2nd Faculty of Medicine, Charles University, 110 00 Prague, Czech Republic;
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Andrearczyk T, Levchenko K, Sadowski J, Domagala JZ, Kaleta A, Dłużewski P, Wróbel J, Figielski T, Wosinski T. Structural Quality and Magnetotransport Properties of Epitaxial Layers of the (Ga,Mn)(Bi,As) Dilute Magnetic Semiconductor. Materials (Basel) 2020; 13:ma13235507. [PMID: 33287117 PMCID: PMC7730930 DOI: 10.3390/ma13235507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/25/2020] [Accepted: 11/26/2020] [Indexed: 06/12/2023]
Abstract
Structural analysis of epitaxial layers of the (Ga,Mn)(Bi,As) quaternary dilute magnetic semiconductor (DMS), together with investigations of their magnetotransport properties, has been thoroughly performed. The obtained results are compared with those for the reference (Ga,Mn)As layers, grown under similar conditions, with the aim to reveal an impact of Bi incorporation on the properties of this DMS material. Incorporation of Bi into GaAs strongly enhances the spin-orbit coupling strength in this semiconductor, and the same has been expected for the (Ga,Mn)(Bi,As) alloy. In turn, importantly for specific spintronic applications, strong spin-orbit coupling in ferromagnetic systems opens a possibility of directly controlling the direction of magnetization by the electric current. Our investigations, performed with high-resolution X-ray diffractometry and transmission electron microscopy, demonstrate that the (Ga,Mn)(Bi,As) layers of high structural quality and smooth interfaces can be grown by means of the low-temperature molecular-beam epitaxy method, despite a large difference between the sizes of Bi and As atoms. Depending on the applied buffer layer, the DMS layers can be grown under either compressive or tensile misfit strain, which influences their magnetic properties. It is shown that even small 1% Bi content in the layers strongly affects their magnetoelectric properties, such as the coercive field and anisotropic magnetoresistance.
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Affiliation(s)
- Tomasz Andrearczyk
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland; (T.A.); (K.L.); (J.S.); (J.Z.D.); (A.K.); (P.D.); (J.W.); (T.F.)
| | - Khrystyna Levchenko
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland; (T.A.); (K.L.); (J.S.); (J.Z.D.); (A.K.); (P.D.); (J.W.); (T.F.)
- Faculty of Physics, University of Vienna, 1090 Vienna, Austria
| | - Janusz Sadowski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland; (T.A.); (K.L.); (J.S.); (J.Z.D.); (A.K.); (P.D.); (J.W.); (T.F.)
- Department of Physics and Electrical Engineering, Linnaeus University, SE-391 82 Kalmar, Sweden
| | - Jaroslaw Z. Domagala
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland; (T.A.); (K.L.); (J.S.); (J.Z.D.); (A.K.); (P.D.); (J.W.); (T.F.)
| | - Anna Kaleta
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland; (T.A.); (K.L.); (J.S.); (J.Z.D.); (A.K.); (P.D.); (J.W.); (T.F.)
| | - Piotr Dłużewski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland; (T.A.); (K.L.); (J.S.); (J.Z.D.); (A.K.); (P.D.); (J.W.); (T.F.)
| | - Jerzy Wróbel
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland; (T.A.); (K.L.); (J.S.); (J.Z.D.); (A.K.); (P.D.); (J.W.); (T.F.)
| | - Tadeusz Figielski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland; (T.A.); (K.L.); (J.S.); (J.Z.D.); (A.K.); (P.D.); (J.W.); (T.F.)
| | - Tadeusz Wosinski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland; (T.A.); (K.L.); (J.S.); (J.Z.D.); (A.K.); (P.D.); (J.W.); (T.F.)
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25
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Tomasik B, Papis-Ubych A, Kedzierawski P, Bibik R, Latusek T, Stando R, Kowalik A, Sadowski J, Graczyk L, Mazurek A, Śnietura M, Rutkowski T, Fijuth J, Widłak P, Fendler W. Serum Micrornas As Biomarkers Of HPV-Associated Oropharyngeal Cancer. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Tomasik B, Papis-Ubych A, Fijuth J, Kędzierawski P, Sadowski J, Stando R, Bibik R, Graczyk Ł, Latusek T, Rutkowski T, Widłak P, Fendler W. OC-0323: Serum microRNAs as xerostomia biomarkers in oropharyngeal cancer patients undergoing radiotherapy. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00347-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kuczeriszka M, Sitek JD, Walkowska A, Sadowski J, Dobrowolski L. Interplay of the adenosine system and NO in control of renal haemodynamics and excretion: Comparison of normoglycaemic and streptozotocin diabetic rats. Nitric Oxide 2020; 104-105:20-28. [PMID: 32828841 DOI: 10.1016/j.niox.2020.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 08/08/2020] [Accepted: 08/11/2020] [Indexed: 11/17/2022]
Abstract
The adenosine (Ado) system may participate in regulation of kidney function in diabetes mellitus (DM), therefore we explored its role and interrelation with NO in the control of renal circulation and excretion in normoglycemic (NG) and streptozotocin-diabetic (DM) rats. Effects of theophylline (Theo), a non-selective Ado receptor antagonist, were examined in anaesthetized NG or in streptozotocin induced diabetic (DM) rats, untreated or after blockade of NO synthesis with l-NAME. We measured arterial blood pressure (MABP), whole kidney blood flow and renal regional flows: cortical and outer- and inner-medullary (IMBF), determined as laser-Doppler fluxes. Renal excretion of water, total solutes and sodium and in situ renal tissue NO signal (selective electrodes) were also determined. Theo experiments disclosed minor baseline vasoconstrictor and vasodilator tone in the kidney of NG and DM rats, respectively. NO blockade increased baseline MABP and decreased renal haemodynamics, similarly in NG and DM rats, indicating comparable vasodilator influence of NO in the two groups. Unexpectedly, in all rats with intact NO synthesis, Ado receptor blockade increased kidney tissue NO. In NO-deficient NG and DM rats, Ado receptor blockade induced comparable renal vasodilatation, suggesting similar vasoconstrictor influence of the Ado system. However, DM rats showed an unexplained association of decreased MABP and IMBF and increased NO signal. Higher baseline renal excretion in DM rats indicated inhibition of renal tubular reabsorption due to the prevalence of natriuretic A2 over antinatriuretic A1 receptors. In conclusion, the experiments provided new insights in functional interrelation of adenosine and NO in normoglycaemia and streptozotocin-diabetes.
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Affiliation(s)
- Marta Kuczeriszka
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, A. Pawińskiego 5, 02-106, Warsaw, Poland.
| | - Joanna Dorota Sitek
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, A. Pawińskiego 5, 02-106, Warsaw, Poland.
| | - Agnieszka Walkowska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, A. Pawińskiego 5, 02-106, Warsaw, Poland.
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, A. Pawińskiego 5, 02-106, Warsaw, Poland.
| | - Leszek Dobrowolski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, A. Pawińskiego 5, 02-106, Warsaw, Poland.
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28
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Ogorzałek Z, Seredyński B, Kret S, Kwiatkowski A, Korona KP, Grzeszczyk M, Mierzejewski J, Wasik D, Pacuski W, Sadowski J, Gryglas-Borysiewicz M. Charge transport in MBE-grown 2H-MoTe 2 bilayers with enhanced stability provided by an AlO x capping layer. Nanoscale 2020; 12:16535-16542. [PMID: 32790820 DOI: 10.1039/d0nr03148h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Thin layers of transition metal dichalcogenides have been intensively studied over the last few years due to their novel physical phenomena and potential applications. One of the biggest problems in laboratory handling and moving on to application-ready devices lies in the high sensitivity of their physicochemical properties to ambient conditions. We demonstrate that novel, in situ capping with an ultra-thin, aluminum film efficiently protects thin MoTe2 layers stabilizing their electronic transport properties after exposure to ambient conditions. The experiments have been performed on bilayers of 2H-MoTe2 grown by molecular beam epitaxy on large area GaAs(111)B substrates. The crystal structure, surface morphology and thickness of the deposited MoTe2 layers have been precisely controlled in situ with a reflection high energy electron diffraction system. As evidenced by high resolution transmission electron microscopy, MoTe2 films exhibit perfect arrangement in the 2H phase and the epitaxial relation to the GaAs(111)B substrates. After the growth, the samples were in situ capped with a thin (3 nm) film of aluminum, which oxidizes after exposure to ambient conditions. This oxide serves as a protective layer to the underlying MoTe2. Resistivity measurements of the MoTe2 layers with and without the cap, exposed to low vacuum, nitrogen and air, revealed a huge difference in their stability. The significant rise of resistance is observed for the unprotected sample while the resistance of the protected one is constant. Wide range temperature resistivity studies showed that charge transport in MoTe2 is realized by hopping with an anomalous hopping exponent of x ≃ 0.66, reported also previously for ultra-thin, metallic layers.
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Affiliation(s)
- Zuzanna Ogorzałek
- Faculty of Physics, University of Warsaw, Pasteura 5, 02-093, Warsaw, Poland.
| | | | - Sławomir Kret
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02-668, Warsaw, Poland
| | - Adam Kwiatkowski
- Faculty of Physics, University of Warsaw, Pasteura 5, 02-093, Warsaw, Poland.
| | - Krzysztof P Korona
- Faculty of Physics, University of Warsaw, Pasteura 5, 02-093, Warsaw, Poland.
| | | | - Janusz Mierzejewski
- Faculty of Physics, University of Warsaw, Pasteura 5, 02-093, Warsaw, Poland.
| | - Dariusz Wasik
- Faculty of Physics, University of Warsaw, Pasteura 5, 02-093, Warsaw, Poland.
| | - Wojciech Pacuski
- Faculty of Physics, University of Warsaw, Pasteura 5, 02-093, Warsaw, Poland.
| | - Janusz Sadowski
- Faculty of Physics, University of Warsaw, Pasteura 5, 02-093, Warsaw, Poland. and Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02-668, Warsaw, Poland and Department of Physics and Electrical Engineering, Linnaeus University, SE-391 82, Kalmar, Sweden
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29
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Ciseł B, Pietrzak L, Michalski W, Wyrwicz L, Rutkowski A, Kosakowska E, Cencelewicz A, Spałek M, Polkowski W, Jankiewicz M, Styliński R, Bębenek M, Kapturkiewicz B, Maciejczyk A, Sadowski J, Zygulska J, Zegarski W, Jankowski M, Las-Jankowska M, Toczko Z, Żelazowska-Omiotek U, Kępka L, Socha J, Wasilewska-Tesluk E, Markiewicz W, Kładny J, Majewski A, Kapuściński W, Suwiński R, Bujko K. Long-course preoperative chemoradiation versus 5 × 5 Gy and consolidation chemotherapy for clinical T4 and fixed clinical T3 rectal cancer: long-term results of the randomized Polish II study. Ann Oncol 2020; 30:1298-1303. [PMID: 31192355 DOI: 10.1093/annonc/mdz186] [Citation(s) in RCA: 126] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND This trial evaluated whether preoperative short-course radiotherapy and consolidation chemotherapy (CCT) were superior to chemoradiation in rectal cancers with clinical (c)T4 or fixed cT3. Previously, we reported early results showing no differences in the radical surgery rate (primary end point). In the short-course/CCT group, we observed lower acute toxicity of preoperative treatment and better overall survival (OS). We updated results to determine whether the benefit in OS was sustained and to evaluate late complications. PATIENTS AND METHODS Patients with cT4 or fixed cT3 rectal cancer were randomized either to preoperative 5 × 5 Gy and three cycles of FOLFOX4 or to chemoradiation (50.4 Gy with bolus 5-Fu, leucovorin and oxaliplatin). RESULTS Patients (N = 515) were eligible for analysis, 261 in the short-course/CCT group and 254 in the chemoradiation group. The median follow-up was 7.0 years. The difference in OS was insignificant [hazard ratio (HR) 0.90; 95% confidence interval (CI) 0.70-1.15; P = 0.38). However, the difference in early OS favouring short-course/CCT previously reported was observed again, being 9% at 3 years (95% CI 0.5% to 17%). This difference disappeared later; at 8 years OS was 49% in both groups. There was no difference in disease-free survival (HR 0.95; 95% CI 0.75-1.19; P = 0.65) at 8 years 43% versus 41% in the short-course/CCT group versus the chemoradiation group, respectively. The corresponding values for cumulative incidences of local failure and distant metastases did not differ and were HR = 1.08, 95% CI 0.70-1.23, P = 0.60, 35% versus 32% and HR = 1.10, 95% CI 0.68-1.23, P = 0.54, 36% versus 34%, respectively. The rate of late complications was similar (P = 0.66), grade 3+ being 11% versus 9% in the short-course/CCT group versus the chemoradiation group, respectively. CONCLUSION The superiority of preoperative short-course/CCT over chemoradiation was not demonstrated. CLINICAL TRIAL NUMBER The trial is registered as ClinicalTrials.gov number NCT00833131.
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Affiliation(s)
- B Ciseł
- Department of Surgical Oncology, Medical University of Lublin, Lublin
| | | | | | | | - A Rutkowski
- Gastroenterological Oncology, M. Skłodowska-Curie Memorial Cancer Centre, Warsaw
| | - E Kosakowska
- Gastroenterological Oncology, M. Skłodowska-Curie Memorial Cancer Centre, Warsaw
| | - A Cencelewicz
- Gastroenterological Oncology, M. Skłodowska-Curie Memorial Cancer Centre, Warsaw
| | | | - W Polkowski
- Department of Surgical Oncology, Medical University of Lublin, Lublin
| | - M Jankiewicz
- Department of Surgical Oncology, Medical University of Lublin, Lublin; Department of Radiotherapy, St. John's Cancer Center, Lublin
| | - R Styliński
- 1st Department of General Surgery, Transplantology and Nutritional Therapy Medical University of Lublin
| | | | | | - A Maciejczyk
- Radiotherapy, Silesian Oncological Centre, Wrocław
| | - J Sadowski
- Department of Radiotherapy, Regional Oncological Centre, Kielce
| | - J Zygulska
- Department of Radiotherapy, Beskid Centre of Oncology, Bielsko-Biala
| | | | | | - M Las-Jankowska
- Clinical Oncology, Collegium Medicum Nicolaus Copernicus University and Oncology Centre, Bydgoszcz
| | - Z Toczko
- Department of Surgery, Regional Hospital, Elblag
| | | | - L Kępka
- Department of Radiotherapy, Military Institute of Medicine, Warsaw
| | - J Socha
- Department of Radiotherapy, Military Institute of Medicine, Warsaw; Department of Radiotherapy, Regional Oncology Center, Czestochowa
| | - E Wasilewska-Tesluk
- Radiotherapy Department, Public Health Care Facility of the Ministry of the Interior and Warmian-Masurian Oncology Centre, Olsztyn; Department of Oncology, University of Warmia and Mazury, Olsztyn
| | - W Markiewicz
- Department of Surgery, Regional Cancer Centre, Białystok
| | - J Kładny
- Department of General Surgery and Surgical Oncology First Clinical Hospital of Pomeranian Medical University, Szczecin
| | - A Majewski
- Department of Surgery, Regional Hospital, Wałbrzych
| | - W Kapuściński
- Department of Radiotherapy, Regional Cancer Centre, Copernicus Memorial Hospital of Łódź, Łódź
| | - R Suwiński
- Department of Radiotherapy, M. Skłodowska-Curie Memorial Cancer Centre, Gliwice, Poland
| | - K Bujko
- II Department of Radiotherapy.
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30
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Pacuski W, Grzeszczyk M, Nogajewski K, Bogucki A, Oreszczuk K, Kucharek J, Połczyńska KE, Seredyński B, Rodek A, Bożek R, Taniguchi T, Watanabe K, Kret S, Sadowski J, Kazimierczuk T, Potemski M, Kossacki P. Narrow Excitonic Lines and Large-Scale Homogeneity of Transition-Metal Dichalcogenide Monolayers Grown by Molecular Beam Epitaxy on Hexagonal Boron Nitride. Nano Lett 2020; 20:3058-3066. [PMID: 32105481 DOI: 10.1021/acs.nanolett.9b04998] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Monolayer transition-metal dichalcogenides (TMDs) manifest exceptional optical properties related to narrow excitonic resonances. However, these properties have been so far explored only for structures produced by techniques inducing considerable large-scale inhomogeneity. In contrast, techniques which are essentially free from this disadvantage, such as molecular beam epitaxy (MBE), have to date yielded only structures characterized by considerable spectral broadening, which hinders most of the interesting optical effects. Here, we report for the first time on the MBE-grown TMD exhibiting narrow and resolved spectral lines of neutral and charged exciton. Moreover, our material exhibits unprecedented high homogeneity of optical properties, with variation of the exciton energy as small as ±0.16 meV over a distance of tens of micrometers. Our recipe for MBE growth is presented for MoSe2 and includes the use of atomically flat hexagonal boron nitride substrate. This recipe opens a possibility of producing TMD heterostructures with optical quality, dimensions, and homogeneity required for optoelectronic applications.
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Affiliation(s)
- Wojciech Pacuski
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura St. 5, 02-093 Warsaw, Poland
| | - Magdalena Grzeszczyk
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura St. 5, 02-093 Warsaw, Poland
| | - Karol Nogajewski
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura St. 5, 02-093 Warsaw, Poland
| | - Aleksander Bogucki
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura St. 5, 02-093 Warsaw, Poland
| | - Kacper Oreszczuk
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura St. 5, 02-093 Warsaw, Poland
| | - Julia Kucharek
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura St. 5, 02-093 Warsaw, Poland
| | - Karolina E Połczyńska
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura St. 5, 02-093 Warsaw, Poland
| | - Bartłomiej Seredyński
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura St. 5, 02-093 Warsaw, Poland
| | - Aleksander Rodek
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura St. 5, 02-093 Warsaw, Poland
| | - Rafał Bożek
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura St. 5, 02-093 Warsaw, Poland
| | - Takashi Taniguchi
- National Institute for Materials Science, Tsukuba 305-0047, Ibaraki, Japan
| | - Kenji Watanabe
- National Institute for Materials Science, Tsukuba 305-0047, Ibaraki, Japan
| | - Slawomir Kret
- Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
| | - Janusz Sadowski
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura St. 5, 02-093 Warsaw, Poland
- Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
- Department of Physics and Electrical Engineering, Linnaeus University, SE-391 82 Kalmar, Sweden
| | - Tomasz Kazimierczuk
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura St. 5, 02-093 Warsaw, Poland
| | - Marek Potemski
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura St. 5, 02-093 Warsaw, Poland
- Laboratoire National des Champs Magnétiques Intenses, CNRS-UJF-UPS-INSA, 25 avenue des Martyrs, 38042 Grenoble, France
| | - Piotr Kossacki
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura St. 5, 02-093 Warsaw, Poland
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31
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Sadowski J, Bądzyńska B. Altered renal medullary blood flow: A key factor or a parallel event in control of sodium excretion and blood pressure? Clin Exp Pharmacol Physiol 2020; 47:1323-1332. [PMID: 32163610 DOI: 10.1111/1440-1681.13303] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/03/2020] [Accepted: 03/09/2020] [Indexed: 11/29/2022]
Abstract
In the context of the ongoing debate on the mechanism of blood pressure (BP) regulation and pathophysiology of arterial hypertension ("renocentric" vs "neural" concepts), attention is focused on the putative regulatory role of changes in renal medullary blood flow (MBF). Experimental evidence is analysed with regard to the question whether an elevation of BP and renal perfusion pressure (RPP) is likely to increase MBF due to its impaired autoregulation. It is concluded that such increases have been clearly documented only in rats with extracellular fluid volume expansion. A possible translation of this finding to BP regulation in health and hypertension in humans may only be a matter of speculation. Within the "renocentric" theory, the key event leading to restoration of initial BP level is pressure natriuresis. Its relation to elevation of renal interstitial hydrostatic pressure and to the phenomenon of "wash-out" of renal medullary solutes by increasing MBF is discussed. We also assessed the validity of data supporting the putative mechanism of short-term restoration of elevated BP owing to the release of a vasodilator lipid (medullipin) by the medulla. The structure of the proposed medullary lipid is still undefined, and there is no sound evidence on its mediatory role in lowering elevated BP level. In conclusion, MBF change can hardly be regarded as a crucial event in the regulation of BP: it can be involved in the control of sodium excretion and BP only in some circumstances, although its contributory role cannot be excluded.
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Affiliation(s)
- Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - Bożena Bądzyńska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
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Walkowska A, Sadowski J, Cervenka L, Falck JR, Kompanowska-Jezierska E. Acute hypotensive effect of EET‐A, a stable analog of epoxyeicosatrienic acid (EET), in spontaneously hypertensive rats: dependence on endogenous EETs activity. FASEB J 2020. [DOI: 10.1096/fasebj.2020.34.s1.08828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Janusz Sadowski
- Mossakowski Medical Research Centre Polish Academy of Sciences
| | - Ludek Cervenka
- Center for Experimental Medicine Institute for Clinical and Experimental Medicine
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Eljasik P, Panicz R, Sobczak M, Sadowski J, Barbosa V, Marques A, Dias J. Plasma biochemistry, gene expression and liver histomorphology in common carp (Cyprinus carpio) fed with different dietary fat sources. Food Chem Toxicol 2020; 140:111300. [PMID: 32224215 DOI: 10.1016/j.fct.2020.111300] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/05/2020] [Accepted: 03/20/2020] [Indexed: 02/06/2023]
Abstract
Demand for omega-3 long chain polyunsaturated fatty acids has become global challenge for aquaculture and different components have been used to increase nutritional value of fillets. The aim of this study was to evaluate influences of feeds on zootechnical parameters, biochemical plasma parameters, expression of lipid-dependent genes, hepatocyte histomorphologies, and fatty acid profiles in common carp fillets. We compared a control diet (CTRL), mimicking a commercial feed formulation for common carp, with three diets containing blends of vegetable oils and a DHA-rich alga (Schizochytrium sp.) included at 3.125% (CB1) or 1.563% (CB2), and 2.1% salmon oil (CB3). The study revealed no differences in final body weight of fish fed CB1-3 diets in comparison with significantly lower CTRL. Concentrations of all biochemical parameters in plasma increased gradually in fish fed CB1-3 diets when compared to CTRL diet, with exception of triacylglycerol levels. Expression of hepatic fas, elovl-5a and pparα genes increased significantly in fish fed CB1 and CB2. Additionally, eicosapentaenoic (EPA) and docosahexaenoic acid (DHA) accumulation in muscle tissue was directly proportional to the amounts supplied in the diets. Our study revealed that carp fillet profiles can be manipulated for DHA and EPA-contents using enriched diets, depending on the source of fat.
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Affiliation(s)
- P Eljasik
- Department of Meat Science, Faculty of Food Science and Fisheries, West Pomeranian University of Technology, 71-550, Szczecin, 4 Kazimierza Królewicza Street, Poland.
| | - R Panicz
- Department of Meat Science, Faculty of Food Science and Fisheries, West Pomeranian University of Technology, 71-550, Szczecin, 4 Kazimierza Królewicza Street, Poland
| | - M Sobczak
- Department of Meat Science, Faculty of Food Science and Fisheries, West Pomeranian University of Technology, 71-550, Szczecin, 4 Kazimierza Królewicza Street, Poland
| | - J Sadowski
- Department of Aquatic Bioengineering and Aquaculture, Faculty of Food Science and Fisheries, West Pomeranian University of Technology, 71-550, Szczecin, 4 Kazimierza Królewicza Street, Poland
| | - V Barbosa
- Divisão de Aquacultura, Valorização e Bioprospecção. Instituto Português do Mar e da Atmosfera, I.P. Lisboa. Portugal, Avenida Professor Doutor Alfredo Magalhães Ramalho 6, 1495-165, Algés, Portugal
| | - A Marques
- Divisão de Aquacultura, Valorização e Bioprospecção. Instituto Português do Mar e da Atmosfera, I.P. Lisboa. Portugal, Avenida Professor Doutor Alfredo Magalhães Ramalho 6, 1495-165, Algés, Portugal
| | - J Dias
- Sparos Lda, Área Empresarial de Marim, Lote C, 8700-221, Olhão, Portugal
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Bądzyńska B, Zakrocka I, Turski WA, Olszyński KH, Sadowski J, Kompanowska-Jezierska E. Kynurenic acid selectively reduces heart rate in spontaneously hypertensive rats. Naunyn Schmiedebergs Arch Pharmacol 2019; 393:673-679. [PMID: 31807837 DOI: 10.1007/s00210-019-01771-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 11/08/2019] [Indexed: 02/06/2023]
Abstract
We found previously that intravenous kynurenic acid (KYNA), a native broad spectrum glutamate antagonist, increases renal blood flow and induces natriuresis in anesthetized spontaneously hypertensive rats (SHR). Since such changes may affect systemic circulation and can potentially find therapeutic application, in this study we examined long term influence of orally administered KYNA on systemic and renal hemodynamics and renal excretion in conscious SHR. KYNA was administered in drinking water at a dose of 25 mg/kg/day for 3 weeks. Heart rate (HR), systolic (SBP), and mean arterial pressure (MAP) were measured through telemetry. The records were taken at the beginning of the study (control, day 0), and then on day 7, 14, and 21 of treatment. Diuresis (V), total solute excretion (UosmV), and sodium excretion (UNaV) were determined on days 0, 7, and 14. KYNA consistently decreased HR, from 319 ± 8 to 291 ± 5, 299 ± 9 and 284 ± 6 beats/min on day 7, 14, and 21, respectively, (- 9, - 6, and - 11%; p < 0.01-0.0001); HR was stable in the solvent group. SBP, MAP, V, and UNaV were not affected by KYNA, whereas UosmV increased modestly. Chronic oral administration of KYNA to conscious SHR decreased HR without affecting MAP. Since tachycardia is an independent risk factor for cardiovascular disorders, and most drugs used to decrease HR have strong inotropic negative or hypotensive effect, such selective action seems of therapeutic potential. Moreover, food supplementation with KYNA can be considered in the prevention of heart diseases.
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Affiliation(s)
- Bożena Bądzyńska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Pawińskiego 5, 02-106, Warsaw, Poland
| | - Izabela Zakrocka
- Department of Experimental and Clinical Pharmacology, Department of Nephrology, Medical University of Lublin, Jaczewskiego 8b, 20-090, Lublin, Poland
| | - Waldemar A Turski
- Department of Experimental and Clinical Pharmacology, Medical University of Lublin, Jaczewskiego 8b, 20-090, Lublin, Poland
| | - Krzysztof H Olszyński
- Behavior and Metabolism Research Laboratory, Mossakowski Medical Research Centre, Polish Academy of Sciences, Pawińskiego 5, 02-106, Warsaw, Poland
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Pawińskiego 5, 02-106, Warsaw, Poland
| | - Elżbieta Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Pawińskiego 5, 02-106, Warsaw, Poland.
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35
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Čertíková Chábová V, Kujal P, Vaňourková Z, Škaroupková P, Sadowski J, Kompanowska-Jezierska E, Tesař V, Hammock B, Imig J, Maxová H, Červenka L, Vaněčková I. Addition of Endothelin A-Receptor Blockade Spoils the Beneficial Effect of Combined Renin-Angiotensin and Soluble Epoxide Hydrolase Inhibition: Studies on the Course of Chronic Kidney Disease in 5/6 Nephrectomized Ren-2 Transgenic Hypertensive Rats. Kidney Blood Press Res 2019; 44:1493-1505. [PMID: 31770762 PMCID: PMC10107074 DOI: 10.1159/000504137] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 10/12/2019] [Indexed: 11/19/2022] Open
Abstract
Introduction: Previous studies in Ren-2 transgenic hypertensive rats (TGR) after 5/6 renal ablation (5/6 NX) have shown that besides pharmacological blockade of the renin-angiotensin system (RAS) also increasing kidney tissue epoxyeicosatrienoic acids (EET) levels by blocking soluble epoxide hydrolase (sEH), an enzyme responsible for degradation of EETs, and endothelin type A (ETA) receptor blockade retards chronic kidney disease (CKD) progression. This prompted us to evaluate if this progression will be alleviated by the addition of sEH inhibitor and ETA receptor antagonist to the standard complex blockade of RAS (angiotensin-converting enzyme inhibitor plus angiotensin II type 1 receptor blocker) in rats with established CKD. Methods: The treatment regimens were initiated 6 weeks after 5/6 NX in TGR, and the follow-up period was 60 weeks. Results: The addition of sEH inhibition to RAS blockade improved survival rate, further reduced albuminuria and renal glomerular and kidney tubulointerstitial injury, and attenuated the decline in creatinine clearance – all this as compared with 5/6 NX TGR treated with RAS blockade alone. Addition of ETA receptor antagonist to the combined RAS and sEH blockade not only offered no additional renoprotection but, surprisingly, also abolished the beneficial effects of adding sEH inhibitor to the RAS blockade. Conclusion: These data indicate that pharmacological strategies that combine the blockade of RAS and sEH could be a novel tool to combat the progression of CKD. Any attempts to further extend this therapeutic regimen should be made with extreme caution.
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Affiliation(s)
- Věra Čertíková Chábová
- Department of Nephrology, 1st Faculty of Medicine, Charles University, Prague, Czechia,
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia,
| | - Petr Kujal
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
- Department of Pathology, 3rd Faculty of Medicine, Charles University, Prague, Czechia
| | - Zdeňka Vaňourková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Petra Škaroupková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - Elzbieta Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - Vladimír Tesař
- Department of Nephrology, 1st Faculty of Medicine, Charles University, Prague, Czechia
| | - Bruce Hammock
- Department of Entomology and UCD Cancer Center, University of California, Davis, California, USA
| | - John Imig
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Hana Maxová
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
- Department of Pathophysiology, 2nd Faculty of Medicine, Charles University, Prague, Czechia
| | - Luděk Červenka
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
- Department of Pathophysiology, 2nd Faculty of Medicine, Charles University, Prague, Czechia
| | - Ivana Vaněčková
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czechia
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36
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Walkowska A, Vaneckova I, Sadowski J, Kompanowska-Jezierska E. Rapid blood pressure increase after renal denervation in anaesthetized rats: interaction of oxidative stress and neuronal nitric oxide synthase. J Physiol Pharmacol 2019; 70. [PMID: 31741458 DOI: 10.26402/jpp.2019.4.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 08/28/2019] [Indexed: 11/03/2022]
Abstract
We showed previously that in anaesthetized rats acute noninvasive renal denervation (DNX) induced an increase in arterial blood pressure (MABP), unlike the usual hypotensive effect. Here we aimed to establish the background of such unusual response, especially the role of oxidative stress as suggested by an earlier study. The contribution of oxidative stress was explored by studying the effects on DNX-induced MABP increase of pretreatment with 4-hydroxy-3-methoxyacetophenone (apocynin, APO), a powerful antioxidant and antihypertensive agent, and N(omega)-propyl-L-arginine (L-NPA), a blocker of neuronal nitric oxide synthase (nNOS). In anaesthetized Wistar rats maintained on standard (STD) or high-salt (HS) diet sequential right- and left-side DNX was performed. MABP responses were examined without pretreatment and after APO (20 mg/day on two preceding days) and L-NPA (1 mg/kg/h throughout experiment), given alone or combined. In untreated rats, bilateral DNX increased MABP by 6% on STD and 15% on HS diet (P < 0.01 or less); the difference between MABP responses was highly significant (P = 0.002). In STD rats APO or APO + L-NPA treatment failed to alter post-DNX MABP increases whereas L-NPA alone reversed the response and a significant 7% decrease occurred. In HS rats APO and L-NPA given alone reversed the MABP response and significant decreases of 14% (P = 0.001) and 8% (P = 0.01), were seen. Surprisingly, with L-NPA + APO pretreatment only abolishment (not reversal) of post-DNX pressure increase occurred. The results suggest that both systemic, intrarenal and brain oxidative stress, and excessive nNOS activity, mostly in the brain, determine the unexpected post-DNX pressure increase.
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Affiliation(s)
- A Walkowska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland.
| | - I Vaneckova
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - J Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - E Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
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Kaleta A, Kret S, Gas K, Kurowska B, Kryvyi SB, Rutkowski B, Szwacki NG, Sawicki M, Sadowski J. Enhanced Ferromagnetism in Cylindrically Confined MnAs Nanocrystals Embedded in Wurtzite GaAs Nanowire Shells. Nano Lett 2019; 19:7324-7333. [PMID: 31500416 DOI: 10.1021/acs.nanolett.9b02956] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nearly a 30% increase in the ferromagnetic phase transition temperature has been achieved in strained MnAs nanocrystals embedded in a wurtzite GaAs matrix. Wurtzite GaAs exerts tensile stress on hexagonal MnAs nanocrystals, preventing a hexagonal to orthorhombic structural phase transition, which in bulk MnAs is combined with the magnetic one. This effect results in a remarkable shift of the magneto-structural phase transition temperature from 313 K in the bulk MnAs to above 400 K in the tensely strained MnAs nanocrystals. This finding is corroborated by the state of the art transmission electron microscopy, sensitive magnetometry, and the first-principles calculations. The effect relies on defining a nanotube geometry of molecular beam epitaxy grown core-multishell wurtzite (Ga,In)As/(Ga,Al)As/(Ga,Mn)As/GaAs nanowires, where the MnAs nanocrystals are formed during the thermal-treatment-induced phase separation of wurtzite (Ga,Mn)As into the GaAs-MnAs granular system. Such a unique combination of two types of hexagonal lattices provides a possibility of attaining quasi-hydrostatic tensile strain in MnAs (impossible otherwise), leading to the substantial ferromagnetic phase transition temperature increase in this compound.
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Affiliation(s)
- Anna Kaleta
- Institute of Physics , Polish Academy of Sciences , Aleja Lotnikow 32/46 , PL-02-668 Warszawa , Poland
| | - Slawomir Kret
- Institute of Physics , Polish Academy of Sciences , Aleja Lotnikow 32/46 , PL-02-668 Warszawa , Poland
| | - Katarzyna Gas
- Institute of Physics , Polish Academy of Sciences , Aleja Lotnikow 32/46 , PL-02-668 Warszawa , Poland
| | - Boguslawa Kurowska
- Institute of Physics , Polish Academy of Sciences , Aleja Lotnikow 32/46 , PL-02-668 Warszawa , Poland
| | - Serhii B Kryvyi
- Institute of Physics , Polish Academy of Sciences , Aleja Lotnikow 32/46 , PL-02-668 Warszawa , Poland
| | - Bogdan Rutkowski
- Faculty of Metals Engineering and Industrial Computer Science , AGH University of Science and Technology , Aleja A. Mickiewicza 30 , 30-059 Kraków , Poland
| | - Nevill Gonzalez Szwacki
- Institute of Theoretical Physics, Faculty of Physics , University of Warsaw , Pasteura 5 , 02-093 Warszawa , Poland
| | - Maciej Sawicki
- Institute of Physics , Polish Academy of Sciences , Aleja Lotnikow 32/46 , PL-02-668 Warszawa , Poland
| | - Janusz Sadowski
- Institute of Physics , Polish Academy of Sciences , Aleja Lotnikow 32/46 , PL-02-668 Warszawa , Poland
- Department of Physics and Electrical Engineering , Linnaeus University , SE-391 82 Kalmar , Sweden
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38
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Kala P, Cervenka L, Taborsky M, Sadowski J, Skaroupkova P, Kompanowska- Jezierska E. P3513Sex-related differences in the outcome of congestive heart failure: study on rats treated with ACEi alone or combined with soluble epoxide hydrolase inhibitor. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
In search for new therapeutic measures of congestive heart failure (CHF) attention focused on the role of epoxyeicosatrienoic acids (EETs), cytochrome P450-dependent epoxygenase pathway metabolites of arachidonic acid, with antihypertensive and organ-protective actions. The EETs are rapidly broken-down by soluble epoxide hydrolase (sEH). Blocking sEH and increasing tissue EETs bioavailability had antihypertensive and cardio- and renoprotective effects. The studies of the biological mechanisms underlying the sex-related differences in the CHF and in the responses to new pharmacological measures are missing. The rat model in which CHF is induced by volume overload by creation of the aorto-caval fistula (ACF) is recommended for preclinical studies by American Heart Association. It has been noticed that the hypertensive rat transgenic for the mouse Ren-2 renin gene (TGR) presents a unique angiotensin II-dependent model of hypertension. We found that male ACF TGR displayed tissue deficiency of EETs, and increasing intrarenal EETs levels by pharmacological blockade of sEH attenuated the progression of CHF in male ACF TGR. However, we did not examine if this effect occurs also in female ACF TGR.
Purpose
The aim was to establish if sex-related differences, if present, are demonstrable with standard treatment with ACEi alone and with the combined treatment with ACEi and sEHi.
Methods
Male and female TGR rats were randomly assigned either to ACF procedure or to sham-operation. One week after the procedure rats were divided into the 8 experimental groups (sham-operated male TGR + placebo, ACF male TGR + placebo, ACF male TGR + ACEi, ACF male TGR + ACEi + sEHi, sham-operated female TGR + placebo, ACF female TGR + placebo, ACF female TGR + ACEi, ACF female TGR + ACEi + sEHi). C-AUCB was used as an sEHi and trandolapril as ACEi, both in drinking water in doses previously tested. The follow-up period was 50 weeks and the primary end-point was death from any cause.
Results
All sham-operated male and female TGR survived until the end of experiment. All untreated male ACF TGR animals died by week 20. In contrast, untreated female ACF survived in the rate of 32%. The treatment with ACEi improved survival rate similary in male as well as female ACF TGR (74% and 65%). The combined treatment with ACEi and sEHi worsened the survival in male ACF TGR as compared with ACF TGR + ACEi (38%). In contrast, the combined treatment with ACEi and sEHi in female ACF TGR significantly improved the course and the final survival rate (84%) as compared with female ACF TGR + ACEi alone.
Picture 1
Conclusions
The study suggests that in CHF individuals in whom hypertension and increased RAS activity run in parallel, the patients' sex is the co-determinant of CHF progression. In particular it can influence the effectiveness of the therapeutic measures applied to slow it down. Therefore, in pre- and clinical studies the sex-related differences should be seriously considered.
Acknowledgement/Funding
Ministry of Health of the Czech Republic grant no. 17- 28220A; Grant Agency of Charles University, project number 32218
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Affiliation(s)
- P Kala
- Motol University Hospital, Prague, Czechia
| | - L Cervenka
- Institute for Clinical and Experimental Medicine (IKEM), Prague, Czechia
| | - M Taborsky
- University Hospital Olomouc, Olomouc, Czechia
| | - J Sadowski
- Mossakowski Medical Research Centre, Warsaw, Poland
| | - P Skaroupkova
- Institute for Clinical and Experimental Medicine (IKEM), Prague, Czechia
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Krátký V, Kikerlová S, Husková Z, Sadowski J, Kolář F, Červenka L. Enhanced Renal Vascular Responsiveness to Angiotensin II and Norepinephrine: A Unique Feature of Female Rats with Congestive Heart Failure. Kidney Blood Press Res 2019; 44:1128-1141. [DOI: 10.1159/000502379] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 07/26/2019] [Indexed: 11/19/2022] Open
Abstract
Background/Aims: We found recently that the aortocaval fistula (ACF)-induced heart failure (HF) results in higher mortality in female than in male rats. Possibly, the development of renal dysfunction in the females, unlike in males, is associated with altered renal vascular responsiveness to angiotensin II (ANG II). Methods: Five or 20 weeks after ACF creation (compensated and decompensated HF, respectively), we assessed renal blood flow (RBF) responses to intrarenal administration of ANG II, norepinephrine (NE), and acetylcholine (Ach) in female ACF and sham-operated rats. Results: In ACF females, ANG II decreased RBF more than in healthy animals, unlike with earlier published data in male ACF rats that responded similarly. Also, NE decreased RBF more in female ACF rats, whereas Ach increased RBF to the same extent in female ACF and sham-operated rats. RBF responses to intravenous administration of NE and Ach were almost identical in female and male ACF rats. Conclusion: Female ACF rats studied at the onset of HF decompensation reveal, in contrast to male rats, enhanced renal vascular responsiveness to both NE and ANG II. When associated with the demonstrated increased intrarenal ANG II and NE concentrations, such hyperresponsiveness might promote the development of renal dysfunction and accelerate HF decompensation.
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40
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Pokorný M, Mrázová I, Kubátová H, Piťha J, Malý J, Pirk J, Maxová H, Melenovský V, Šochman J, Sadowski J, Červenka L, Čermák Z, Volenec K, Netuka I. Intraventricular placement of a spring expander does not attenuate cardiac atrophy of the healthy heart induced by unloading via heterotopic heart transplantation. Physiol Res 2019; 68:567-580. [PMID: 31177788 DOI: 10.33549/physiolres.933936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
An important complication of the prolonged left ventricle assist device support in patients with heart failure is unloading-induced cardiac atrophy which proved resistant to various treatments. Heterotopic heart transplantation (HTx) is the usual experimental model to study this process. We showed previously that implantation of the newly designed intraventricular spring expander can attenuate the atrophy when examined after HTx in the failing heart (derived from animals with established heart failure). The present study aimed to examine if enhanced isovolumic loading achieved by implantation of the expander would attenuate cardiac post-HTx atrophy also in the healthy heart. Cardiac atrophy was assessed as the ratio of the transplanted-to-native heart weight (HW) and its degree was determined on days 7, 14, 21 and 28 after HTx. The transplantation resulted in 32±3, 46±2, 48±3 and 46±3 % HW loss when measured at the four time points; implantation of the expander had no significant effect on these decreases. We conclude that enhanced isovolumic loading achieved by intraventricular implantation of the expander does not attenuate the development of cardiac atrophy after HTx in the healthy heart. This indicates that such an approach does not represent a useful therapeutic measure to attenuate the development of unloading-induced cardiac atrophy.
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Affiliation(s)
- M Pokorný
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
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41
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Kala P, Červenka L, Škaroupková P, Táborský M, Kompanowska-Jezierska E, Sadowski J. Sex-linked differences in the mortality in Ren-2 transgenic hypertensive rats with aorto-caval fistula: effects of treatment with angiotensin converting enzyme alone and combined with inhibitor of soluble epoxide hydrolase. Physiol Res 2019; 68:589-601. [DOI: 10.33549/physiolres.934094] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
We found recently that in Ren-2 transgenic hypertensive rats (TGR) addition of soluble epoxide hydrolase inhibitor (sEHi) to treatment with angiotensin-converting enzyme inhibitor (ACEi), surprisingly, increased the mortality due to heart failure (HF) induced by creation of the aorto-caval fistula (ACF). Since TGR exhibit sex-related differences in mortality, we examined here if such differentiation exists also in the response to the treatment with ACEi (trandolapril), alone or combined with sEHi [cis-4-[4-(3-adamantan-1-yl-ureido)cyclohexyloxy]benzoic acid, (c-AUCB)]. ACEi improved survival in males to 74 % (vs. 0 %) and in females to 65 % (vs. 32 %). ACEi and sEHi combined also improved the survival in male ACF TGR, however, it was significantly less (38 %) than after ACEi alone. In contrast, in females the combined treatment significantly improved the final survival rate (84 %). There were no significant sex-linked differences in survival rate in untreated or treated normotensive Hannover Sprague-Dawley rats. In conclusion, in HF patients with co-existing hypertension and RAS hyperactivity, the sex may co-determine the rate of HF progression, and can influence the effectiveness of the therapeutic measures applied. Therefore, in the relevant pre-clinical studies the sex-linked differences should be seriously considered. Our data indicate that TGR might be an optimal model for such studies.
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Affiliation(s)
| | - L. Červenka
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, 1958/9 Vídeňská, Prague, Czech Republic.
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42
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Vacková Š, Kikerlová S, Melenovsky V, Kolář F, Imig JD, Kompanowska-Jezierska E, Sadowski J, Červenka L. Altered Renal Vascular Responsiveness to Vasoactive Agents in Rats with Angiotensin II-Dependent Hypertension and Congestive Heart Failure. Kidney Blood Press Res 2019; 44:792-809. [PMID: 31430751 PMCID: PMC10107072 DOI: 10.1159/000501688] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 05/22/2019] [Indexed: 11/19/2022] Open
Abstract
Objective: We evaluated the hypothesis that the development of renal dysfunction and congestive heart failure (CHF) caused by volume overload in rats with angiotensin II (ANG II)-dependent hypertension is associated with altered renal vascular responsiveness to ANG II and to epoxyeicosatrienoic acids (EETs). Methods: Ren-2 transgenic rats (TGRs) were used as a model of ANG II-dependent hypertension. CHF was induced by volume overload achieved by the creation of the aorto-caval fistula (ACF). Renal blood flow (RBF) responses were determined to renal arterial administration of ANG II, native 11,12-EET, an analog of 14,15-EETs (EET-A), norepinephrine (NE), acetylcholine (Ach) and bradykinin (Bk) in healthy (i.e., sham-operated) TGR and ACF TGR (5 weeks after ACF creation). Results: Selective intrarenal administration of neither vasoactive drug altered mean arterial pressure in any group. Administration of ANG II caused greater decreases in RBF in ACF TGR than in sham-operated TGR, whereas after administration of NE the respective decreases were comparable in the 2 groups. Administration of Ach and Bk elicited significantly higher RBF increases in ACF TGR as compared with sham-operated TGR. In contrast, administration of 11,12-EET and EET-A caused significantly smaller RBF increases in ACF TGR than in sham-operated TGR. Conclusion: The findings show that 5 weeks after creation of ACF, the TGR exhibit exaggerated renal vasoconstrictor responses to ANG II and reduced renal vasodilatory responses to EETs, suggesting that both these alterations might play an important role in the development of renal dysfunction in this model of CHF.
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Affiliation(s)
- Šárka Vacková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Soňa Kikerlová
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Vojtěch Melenovsky
- Department of Cardiology, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - František Kolář
- Department of Developmental Cardiology, Institute of Physiology of the Czech Academy of Sciences, Prague, Czechia
| | - John D Imig
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Elzbieta Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Science, Warsaw, Poland
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Science, Warsaw, Poland
| | - Luděk Červenka
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia,
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43
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Kuczeriszka M, Walkowska A, Olszynski KH, Rafalowska J, Sadowski J, Kompanowska-Jezierska E. Arginine and tetrahydrobiopterin supplementation in rats with salt-induced blood pressure increase: minor hypotensive effect but improvement of renal haemodynamics. J Physiol Pharmacol 2019; 70. [PMID: 31356183 DOI: 10.26402/jpp.2019.2.05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 04/29/2019] [Indexed: 11/03/2022]
Abstract
High salt (HS) intake can lead to hypertension, probably the result of the predominance of vasoconstrictor reactive oxygen species over vasodilator nitric oxide (NO). We aimed to examine if the supposed NO deficiency and the resultant blood pressure increase could be corrected by supplementation of L-arginine, the substrate, and tetrahydrobiopterin (BH4), a co-factor of NO synthases. Wistar rats without known genetic background of salt sensitivity were exposed to HS diet (4%Na) for 10 or 26 days, without or with supplementation with oral L-arginine, 1.4 mg/kg b.w. daily, alone or together with intraperitoneal BH4, 10 mg/kg daily. Systolic blood pressure (SBP, tail-cuff method) was measured repeatedly and found to increase ~40 mmHg after 26 days; L-arginine and BH4 did not significantly attenuate this increase. At the end of chronic studies, in anaesthetized rats the diet- and treatment-induced changes in renal haemodynamics were assessed. HS diet selectively decreased (-30%, P < 0.03) the inner medullary blood flow (IMBF, laser-Doppler flux) without changing total or cortical renal perfusion. Arginine supplementation tended to raise all renal circulatory parameters, and distinctly increased IMBF, to 61% above the HS diet level (P < 0.05). In conclusion, unlike in confirmed genetically determined salt-dependent hypertension, L-arginine and BH4 supplementation failed to attenuate the SBP increase observed after exposure to HS diet. On the other hand, arginine increased total and regional renal perfusion, especially IMBF. This suggests that the delivery of arginine increased intrarenal NO synthesis, an action of renoprotective potential which presumably countered the harmful influence of the local tissue oxidative stress.
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Affiliation(s)
- M Kuczeriszka
- Department of Renal and Body Fluid Physiology, M. Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland. ;
| | - A Walkowska
- Department of Renal and Body Fluid Physiology, M. Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - K H Olszynski
- Department of Renal and Body Fluid Physiology, M. Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - J Rafalowska
- Department of Experimental and Clinical Neuropathology, M. Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - J Sadowski
- Department of Renal and Body Fluid Physiology, M. Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - E Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, M. Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
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44
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Levchenko K, Prokscha T, Sadowski J, Radelytskyi I, Jakiela R, Trzyna M, Andrearczyk T, Figielski T, Wosinski T. Evidence for the homogeneous ferromagnetic phase in (Ga,Mn)(Bi,As) epitaxial layers from muon spin relaxation spectroscopy. Sci Rep 2019; 9:3394. [PMID: 30833684 PMCID: PMC6399229 DOI: 10.1038/s41598-019-40309-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 02/11/2019] [Indexed: 11/28/2022] Open
Abstract
Ferromagnetic semiconductor thin layers of the quaternary (Ga,Mn)(Bi,As) and reference, ternary (Ga,Mn)As compounds, epitaxially grown under either compressive or tensile strain, have been characterized from a perspective of structural and magnetization homogeneity. The quality and composition of the layers have been confirmed by secondary-ion mass spectrometry (SIMS). A thorough evaluation of the magnetic properties as a function of temperature and applied magnetic field has been performed by means of SQUID magnetometry and low-energy muon spin relaxation (µSR) spectroscopy, which enables studying local (on the nanometer scale) magnetic properties of the layers. The results testify that the ferromagnetic order builds up almost homogeneously below the Curie temperature in the full volume fraction of both the (Ga,Mn)As and (Ga,Mn)(Bi,As) layers. Incorporation of a small amount of heavy Bi atoms into (Ga,Mn)As, which distinctly enhances the strength of spin-orbit coupling in the quaternary (Ga,Mn)(Bi,As) layers, does not deteriorate noticeably their magnetic properties.
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Affiliation(s)
- K Levchenko
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668, Warsaw, Poland.
| | - T Prokscha
- Paul Scherrer Institute, Laboratory for Muon Spin Spectroscopy, CH-5232, Villigen, Switzerland
| | - J Sadowski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668, Warsaw, Poland.,MAX-IV Laboratory, Lund University, P.O. Box 118, SE-221 00, Lund, Sweden.,Department of Physics and Electrical Engineering, Linnaeus University, SE-391 82, Kalmar, Sweden
| | - I Radelytskyi
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668, Warsaw, Poland
| | - R Jakiela
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668, Warsaw, Poland
| | - M Trzyna
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668, Warsaw, Poland.,Faculty of Mathematics and Natural Sciences, University of Rzeszów, PL-35310, Rzeszów, Poland
| | - T Andrearczyk
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668, Warsaw, Poland
| | - T Figielski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668, Warsaw, Poland
| | - T Wosinski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668, Warsaw, Poland
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Vacková Š, Kopkan L, Kikerlová S, Husková Z, Sadowski J, Kompanowska-Jezierska E, Hammock BD, Imig JD, Táborský M, Melenovský V, Červenka L. Pharmacological Blockade of Soluble Epoxide Hydrolase Attenuates the Progression of Congestive Heart Failure Combined With Chronic Kidney Disease: Insights From Studies With Fawn-Hooded Hypertensive Rats. Front Pharmacol 2019; 10:18. [PMID: 30728778 PMCID: PMC6351500 DOI: 10.3389/fphar.2019.00018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 01/08/2019] [Indexed: 12/29/2022] Open
Abstract
An association between congestive heart failure (CHF) and chronic kidney disease (CKD) results in extremely poor patient survival rates. Previous studies have shown that increasing kidney epoxyeicosatrienoic acids (EETs) by blocking soluble epoxide hydrolase (sEH), an enzyme responsible for EETs degradation, improves the survival rate in CHF induced by aorto-caval fistula (ACF) and attenuates CKD progression. This prompted us to examine if sEH inhibitor treatment would improve the outcome if both experimental conditions are combined. Fawn-hooded hypertensive (FHH) rats, a genetic model showing early CKD development was employed, and CHF was induced by ACF. Treatment with an sEH inhibitor was initiated 4 weeks after ACF creation, in FHH and in fawn-hooded low-pressure (FHL) rats, a control strain without renal damage. The follow-up period was 20 weeks. We found that ACF FHH rats exhibited substantially lower survival rates (all the animals died by week 14) as compared with the 64% survival rate observed in ACF FHL rats. The former group showed pronounced albuminuria (almost 30-fold higher than in FHL) and reduced intrarenal EET concentrations. The sEH inhibitor treatment improved survival rate and distinctly reduced increases in albuminuria in ACF FHH and in ACF FHL rats, however, all the beneficial actions were more pronounced in the hypertensive strain. These data indicate that pharmacological blockade of sEH could be a novel therapeutic approach for the treatment of CHF, particularly under conditions when it is associated with CKD.
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Affiliation(s)
- Šárka Vacková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia.,Department of Physiology, Faculty of Science, Charles University, Prague, Czechia
| | - Libor Kopkan
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Soňa Kikerlová
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Zuzana Husková
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - Elzbieta Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | - Bruce D Hammock
- Department of Entomology, UCD Cancer Center, University of California, Davis, Davis, CA, United States
| | - John D Imig
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Miloš Táborský
- Department of Internal Medicine I, Cardiology, University Hospital Olomouc, Palacký University, Olomouc, Czechia
| | - Vojtěch Melenovský
- Department of Cardiology, Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - Luděk Červenka
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czechia.,Department of Pathophysiology, Second Faculty of Medicine, Charles University, Prague, Czechia
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Kratky V, Kopkan L, Kikerlova S, Huskova Z, Taborsky M, Sadowski J, Kolar F, Cervenka L. The Role of Renal Vascular Reactivity in the Development of Renal Dysfunction in Compensated and Decompensated Congestive Heart Failure. Kidney Blood Press Res 2018; 43:1730-1741. [DOI: 10.1159/000495391] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 11/14/2018] [Indexed: 11/19/2022] Open
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Sadowski J, Dziawa P, Kaleta A, Kurowska B, Reszka A, Story T, Kret S. Defect-free SnTe topological crystalline insulator nanowires grown by molecular beam epitaxy on graphene. Nanoscale 2018; 10:20772-20778. [PMID: 30402641 DOI: 10.1039/c8nr06096g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
SnTe topological crystalline insulator nanowires have been grown by molecular beam epitaxy on graphene/SiC substrates. The nanowires have a cubic rock-salt structure, they grow along the [001] crystallographic direction and have four sidewalls consisting of {100} crystal planes known to host metallic surface states with a Dirac dispersion. Thorough high resolution transmission electron microscopy investigations show that the nanowires grow on graphene in the van der Waals epitaxy mode induced when the catalyzing Au nanoparticles mix with Sn delivered from a SnTe flux, providing a liquid Au-Sn alloy. The nanowires are totally free from structural defects, but their {001} sidewalls are prone to oxidation, which points out the necessity of depositing a protective capping layer in view of exploiting the magneto-electric transport phenomena involving charge carriers occupying topologically protected states.
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Affiliation(s)
- Janusz Sadowski
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warszawa, Poland.
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Bądzyńska B, Baranowska I, Gawryś O, Sadowski J. Evidence against a crucial role of renal medullary perfusion in blood pressure control of hypertensive rats. J Physiol 2018; 597:211-223. [PMID: 30334256 DOI: 10.1113/jp276342] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 10/17/2018] [Indexed: 11/08/2022] Open
Abstract
KEY POINTS The development of new effective methods of treating arterial hypertension is hindered by uncertainty regarding its causes. According to one widespread concept hypertension is caused by abnormal blood circulation in the kidney, specifically by reduction of blood flow through the kidney medulla; however, this causal relationship has never been rigorously verified. We investigated whether in rats with three different forms of experimental hypertension prolonged selective elevation of renal medullary blood flow using local infusion of the vasodilator bradykinin would lower arterial pressure. We found that increasing medullary blood flow by almost 50% did not result in alleviation of hypertension, which argues against a causal role of such changes in the control of arterial pressure and suggests that attempts at improving renal medullary circulation are not likely to be a promising approach to combating hypertension. ABSTRACT The crucial role of renal medullary blood flow (MBF) in the control of arterial pressure (MAP) has been widely accepted but not rigorously verified. We examined the effects of experimental selective MBF elevation on MAP, medullary tissue hypertonicity and renal excretion in hypertensive rats. We used three hypertensive rat models: (1) rats with hypertension induced by chronic angiotensin II infusions (AngII model), (2) rats with hypertension induced by unilateral nephrectomy followed by high salt diet (HS/UNX), and (3) spontaneously hypertensive rats (SHR). In acute experiments, MBF (laser-Doppler measurement) was selectively increased with an intramedullary infusion of bradykinin (Bk) at 0.27 mg h-1 kg-1 BW over 4 h. MAP, renal artery blood flow (Transonic probe) and renal excretion parameters were measured simultaneously. In chronic studies with AngII and HS/UNX rats, Bk was infused over 2 weeks and MAP (telemetry probe) and renal excretion were repeatedly determined. In acute studies, with AngII, SHR and HS/UNX groups, Bk infusion caused a 47% increase in MBF (P < 0.01-0.001), whereas solvent infusion was without effect. During the experiments MAP decreased slightly and to the same extent with Bk and solvent infusion. Medullary tissue osmolality and [Na+ ] were lower in Bk- than in solvent-infused AngII rats and in SHR. Two weeks of intramedullary Bk infusion tested in AngII and HS/UNX rats did not alter MAP or renal excretion; though in the latter group a significant MBF increase and medullary hypertonicity decrease was observed. Since no decrease in MAP in hypertensive rats was seen with Bk-induced major renal medullary hyperperfusion or with a wash-out of medullary solutes, our data argue against a crucial role of MBF in the pathogenesis of arterial hypertension.
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Affiliation(s)
- Bożena Bądzyńska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre , Polish Academy of Sciences, 5 Pawińskiego St, 02-106, Warsaw, Poland
| | - Iwona Baranowska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre , Polish Academy of Sciences, 5 Pawińskiego St, 02-106, Warsaw, Poland
| | - Olga Gawryś
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre , Polish Academy of Sciences, 5 Pawińskiego St, 02-106, Warsaw, Poland
| | - Janusz Sadowski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Centre , Polish Academy of Sciences, 5 Pawińskiego St, 02-106, Warsaw, Poland
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49
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Targoński R, Sadowski J, Starek-Stelmaszczyk M, Targoński R, Rynkiewicz A. Prognostic significance of red cell distribution width and its relation to increased pulmonary pressure and inflammation in acute heart failure. Cardiol J 2018; 27:394-403. [PMID: 30234900 DOI: 10.5603/cj.a2018.0103] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 09/11/2018] [Accepted: 06/10/2018] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Red cell distribution width (RDW) in acute heart failure (AHF) is accepted as a prognostic indicator with unclear pathophysiological ties. The aim of this study was to evaluate the prognostic value of RDW in AHF patients in relation to clinical and echocardiographic data. METHODS 170 patients with AHF were retrospectively studied. All patients had laboratory testing and an echocardiogram performed within 24 h of admission to the Cardiology Department. RESULTS During the mean 193 ± 111 days of follow-up, 33 patients died. More advanced age, high RDW and low peak early diastolic velocity of the lateral mitral annulus (MVe') were independent predictors of all-cause mortality with hazard ratios of: 1.05 (95% CI 1.02-1.09), p < 0.005, 1.40 (95% CI 1.22-1.60), p < 0.001, and 0.77 (95% CI 0.63-0.93), p < 0.007, respectively. In a stepwise multiple linear regression model, RDW was correlated with hemoglobin concentration (standardized b = -0.233, p < 0.001), mean corpuscular volum (standardized b = -0.230, p < 0.001), mean corpuscular hemoglobin concentration (standardized b = -0.207, p < 0.007), the natural logarithm of C-reactive protein (CRP) (standardized b = 0.184, p < 0.004) and tricuspid regurgitation peak gradient (TRPG) values (standardized b = 0.179, p < 0.006), whereas MVe' was correlated with atrial fibrillation (standardized b = 0.269, p < 0.001). CONCLUSIONS The present data demonstrates a novel relation between higher levels of RDW and elevated TRPG and high sensitivity CRP values in patients with AHF. These findings suggest that RDW, the most important mortality predictor, is independently associated with elevated pulmonary pressure and systemic inflammation in patients with AHF. Moreover, in AHF patients, more advanced age and decreased MVe' are also independently associated with total mortality risk.
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Affiliation(s)
- Ryszard Targoński
- Department of Cardiology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 2, 10-900 Olsztyn, Poland.
| | - Janusz Sadowski
- Department of Cardiology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 2, 10-900 Olsztyn, Poland
| | | | | | - Andrzej Rynkiewicz
- Department of Cardiology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 2, 10-900 Olsztyn, Poland
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50
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Targonski R, Cyganski P, Sadowski J, Starek-Stelmaszczyk M, Targonski R, Nowek P, Rynkiewicz A. P2276Assessment of mitral and tricuspid annular velocity ratios improves pulmonary embolism diagnostics in acute decompensated heart failure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- R Targonski
- University of Varmia and Masuria, Olsztyn, Poland
| | - P Cyganski
- University of Varmia and Masuria, Olsztyn, Poland
| | - J Sadowski
- University of Varmia and Masuria, Olsztyn, Poland
| | | | - R Targonski
- Pomeranian Cardiology Centers, Gdansk, Poland
| | - P Nowek
- University of Varmia and Masuria, Olsztyn, Poland
| | - A Rynkiewicz
- University of Varmia and Masuria, Olsztyn, Poland
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