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Krasoń MZ, Paradowska A, Boncel S, Lejawa M, Fronczek M, Śliwka J, Nożyński J, Bogus P, Hrapkowicz T, Czamara K, Kaczor A, Radomski MW. Graphene Oxide Significantly Modifies Cardiac Parameters and Coronary Endothelial Reactivity in Healthy and Hypertensive Rat Hearts Ex Vivo. ACS OMEGA 2024; 9:28397-28411. [PMID: 38973833 PMCID: PMC11223131 DOI: 10.1021/acsomega.4c02291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 04/27/2024] [Accepted: 05/21/2024] [Indexed: 07/09/2024]
Abstract
Interactions of graphene oxide (GO) with an ex vivo rat heart and its coronary vessels have not been studied yet. Moreover, the conflicting data on the "structure-properties" relationships do not allow for biomedical applications of GO. Herein, we study the impact of GO on the ex vivo isolated rat heart, normotensive and hypertensive, under the working heart and the constant-pressure perfusion (Langendorff) regimes. Four structural GO variants of the following initial morphology were used: few-layer (below 10-layer) GO1, O < 49%; predominantly single-layer GO2, O = 41-50%; 15-20-layer GO3, O < 11%; and few-layer (below 10-layer) NH4 +-functionalized GO4, O < 44%, N = 3-6%. The aqueous GO dispersions, sonicated and stabilized with bovine serum albumin in Krebs-Henseleit-like solution-uniformized in terms of the particle size-were eventually size-monodisperse as revealed by dynamic light scattering. To study the cardiotoxicity mechanisms of GO, histopathology, Raman spectroscopy, analysis of cardiac parameters (coronary and aortic flows, heart rate, aortic pressure), and nitric oxide (NO-)-dependent coronary flow response to bradykinin (blood-vessel-vasodilator) were used. GO1 (10 mg/L) exerted no effects on cardiac function and preserved an increase in coronary flow in response to bradykinin. GO2 (10 mg/L) reduced coronary flow, aortic pressure in normotensive hearts, and coronary flow in hypertensive hearts, and intensified the response to bradykinin in normal hearts. GO3 (10 mg/L) reduced all parameters in hypertensive hearts and coronary response to bradykinin in normal hearts. At higher concentrations (normotensive hearts, 30 mg/L), the coronary response to bradykinin was blocked. GO4 (10 mg/L) reduced the coronary flow in normal hearts, while for hypertensive hearts, all parameters, except the coronary flow, were reduced and the coronary response to bradykinin was blocked. The results showed that a low number of GO layers and high O-content were safer for normal and hypertensive rat hearts. Hypertensive hearts deteriorated easier upon perfusion with low-O-content GOs. Our findings support the necessity of strict control over the GO structure during organ perfusion and indicate the urgent need for personalized medicine in biomedical applications of GO.
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Affiliation(s)
- Marcin Z. Krasoń
- Silesian
Park of Medical Technology Kardio-Med Silesia, Marii Skłodowskiej-Curie 10C, 41-800 Zabrze, Poland
- Department
of Cardiac, Vascular and Endovascular Surgery and Transplantology,
Silesian Center for Heart Disease, Medical
University of Silesia in Katowice, Marii Skłodowskiej-Curie 9, 41-800 Zabrze, Poland
| | - Anna Paradowska
- Silesian
Park of Medical Technology Kardio-Med Silesia, Marii Skłodowskiej-Curie 10C, 41-800 Zabrze, Poland
| | - Sławomir Boncel
- Department
of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Faculty
of Chemistry, Silesian University of Technology, Krzywoustego 4, 44-100 Gliwice, Poland
- Centre
for Organic and Nanohybrid Electronics (CONE), Silesian University of Technology, Konarskiego 22B, 44-100 Gliwice, Poland
| | - Mateusz Lejawa
- Silesian
Park of Medical Technology Kardio-Med Silesia, Marii Skłodowskiej-Curie 10C, 41-800 Zabrze, Poland
- Department
of Pharmacology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Jordana 38, 41-808 Zabrze, Poland
| | - Martyna Fronczek
- Silesian
Park of Medical Technology Kardio-Med Silesia, Marii Skłodowskiej-Curie 10C, 41-800 Zabrze, Poland
- Department
of Pharmacology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Jordana 38, 41-808 Zabrze, Poland
| | - Joanna Śliwka
- Silesian
Park of Medical Technology Kardio-Med Silesia, Marii Skłodowskiej-Curie 10C, 41-800 Zabrze, Poland
- Department
of Cardiac, Vascular and Endovascular Surgery and Transplantology,
Silesian Center for Heart Disease, Medical
University of Silesia in Katowice, Marii Skłodowskiej-Curie 9, 41-800 Zabrze, Poland
| | - Jerzy Nożyński
- Department
of Cardiac, Vascular and Endovascular Surgery and Transplantology,
Silesian Center for Heart Disease, Medical
University of Silesia in Katowice, Marii Skłodowskiej-Curie 9, 41-800 Zabrze, Poland
| | - Piotr Bogus
- Silesian
Park of Medical Technology Kardio-Med Silesia, Marii Skłodowskiej-Curie 10C, 41-800 Zabrze, Poland
| | - Tomasz Hrapkowicz
- Department
of Cardiac, Vascular and Endovascular Surgery and Transplantology,
Silesian Center for Heart Disease, Medical
University of Silesia in Katowice, Marii Skłodowskiej-Curie 9, 41-800 Zabrze, Poland
| | - Krzysztof Czamara
- Jagiellonian
Centre of Experimental Therapeutics (JCET), Jagiellonian University, M. Bobrzyńskiego 14, 30-348 Kraków, Poland
| | - Agnieszka Kaczor
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
| | - Marek W. Radomski
- Department
of Anatomy, Physiology and Pharmacology, College of Medicine, University of Saskatchewan, 107 Wiggins Rd, Saskatoon SKS7N 5E5, Canada
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Ondrias K, Stasko A, Cacanyiova S, Sulova Z, Krizanova O, Kristek F, Malekova L, Knezl V, Breier A. H(2)S and HS(-) donor NaHS releases nitric oxide from nitrosothiols, metal nitrosyl complex, brain homogenate and murine L1210 leukaemia cells. Pflugers Arch 2008; 457:271-9. [PMID: 18458940 DOI: 10.1007/s00424-008-0519-0] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2008] [Revised: 03/31/2008] [Accepted: 04/12/2008] [Indexed: 02/07/2023]
Abstract
Nitrosoglutathione [(GSNO), 500 nmol/l] relaxed the norepinephrine precontracted rat aortic rings. The relaxation effect was pronouncedly enhanced by H(2)S- and HS(-)-donor NaHS (30 micromol/l) at 7.5 pH but not at 6.3 pH. To study molecular mechanism of this effect, we investigated whether NaHS can release NO from NO donors. Using an electron paramagnetic resonance spectroscopy method of spin trap and by measuring the NO oxidation product, which is nitrite, by the Griess reaction, we report that NaHS released NO from nitrosothiols, namely from GSNO, S-nitroso-N-acetyl-DL: -penicillamine (SNAP), from metal nitrosyl complex nitroprusside (SNP) and from rat brain homogenate and murine L1210 leukaemia cells. From the observation that the releasing effect was more pronounced at 8.0 pH than 6.0 pH, we suppose that HS(-), rather than H(2)S, is responsible for the NO-releasing effect. Since in mammals, H(2)S and HS(-) are produced endogenously, we assume that their effect to release NO from nitrosothiols and from metal nitrosyl complexes are responsible for some of their biological activities and that this mechanism may be involved in S-nitrosothiol-signalling reactions.
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Affiliation(s)
- Karol Ondrias
- Institute of Molecular Physiology and Genetics, Slovak Academy of Sciences, Vlarska 5, 833 34, Bratislava, Slovak Republic.
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