1
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Danylovych HV, Danylovych YV, Pavliuk MR, Kosterin SO. Products of oxidative and non-oxidative metabolism of L-arginine as potential regulators of Ca 2+ transport in mitochondria of uterine smooth muscle. Biochim Biophys Acta Gen Subj 2024; 1868:130652. [PMID: 38857773 DOI: 10.1016/j.bbagen.2024.130652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 05/15/2024] [Accepted: 06/04/2024] [Indexed: 06/12/2024]
Abstract
Mitochondria play a crucial role in maintaining Ca2+ homeostasis in cells. Due to the critical regulatory role of the products of oxidative and non-oxidative metabolism of L-arginine, it is essential to clarify their effect on Ca2+ transport in smooth muscle mitochondria. Experiments were performed on the uterine myocytes of rats and isolated mitochondria. The possibility of NO synthesis by mitochondria was demonstrated by confocal microscopy and spectrofluorimetry methods using the NO-sensitive fluorescent probe DAF-FM and Mitotracker Orange CM-H2TMRos. It was shown that 50 μM L-arginine stimulates the energy-dependent accumulation of Ca2+ in mitochondria using the fluorescent probe Fluo-4 AM. A similar effect occurred when using nitric oxide donors 100 μM SNP, SNAP, and sodium nitrite (SN) directly. The stimulating effect was eliminated in the presence of the NO scavenger C-PTIO. Nitric oxide reduces the electrical potential in mitochondria without causing them to swell. The stimulatory effect of spermine on the accumulation of Ca2+ by mitochondria is attributed to the enhancement of NO synthesis, which was demonstrated with the use of C-PTIO, NO-synthase inhibitors (100 μM NA and L-NAME), as well as by direct monitoring of NO synthesis fluorescent probe DAF-FM. A conclusion was drawn about the potential regulatory effect of the product of the oxidative metabolism of L-arginine - NO on the transport of Ca2+ in the mitochondria of the myometrium, as well as the corresponding effect of the product of non-oxidative metabolism -spermine by increasing the synthesis of NO in these subcellular structures.
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Affiliation(s)
- Hanna V Danylovych
- Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine.
| | - Yuriy V Danylovych
- Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Maksym R Pavliuk
- Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Sergiy O Kosterin
- Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
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2
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Alsharabasy AM, Aljaabary A, Farràs P, Pandit A. Engineering hemin-loaded hyaluronan needle-like microparticles with photoprotective properties against UV-induced tissue damage. J Mater Chem B 2024. [PMID: 39194146 DOI: 10.1039/d4tb01529k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2024]
Abstract
This study aimed to develop hyaluronan (HA)-based hydrogel microparticles (MPs) loaded with hemin to address the limitations of traditional macroscale hydrogels. The objective is to design MPs such that they can modulate their physicochemical properties. Given the widespread use of ultraviolet C (UVC) light in various industries and the need for protective measures against accidental exposure, this study evaluated the potential of hemin-loaded MPs to protect human dermal fibroblasts from oxidative stress and cell death caused by UVC exposure. Multiple MP formulations were developed and analysed for size, surface charge, swelling behaviour, degradation rate, and radical scavenging capabilities, both with and without hemin loading. The most promising formulations were tested against UVC-exposed cells to assess cell viability, intracellular nitric oxide (˙NO) and reactive oxygen species levels, and protein carbonylation. The fabricated particles were in the form of microneedles, and the degree of their crosslinking and the role of hemin in the chemical crosslinking reaction were found to influence the surface charge and hydrodynamic diameter of the MPs. Increased crosslinking resulted in reduced swelling, slower degradation, and decreased hemin release rate. MPs with a higher degree of swelling were capable of releasing hemin into the culture medium, leading to enhanced bilirubin generation in dermal fibroblasts following cellular uptake. Pre-treatment with these MPs protected the cells from UVC-induced cell death, nitrosative stress, and protein carbonylation. These findings highlight the potential of the studied MPs to release hemin and to minimise the harmful effects of UVC on dermal fibroblasts.
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Affiliation(s)
- Amir M Alsharabasy
- CÚRAM, SFI Research Centre for Medical Devices, University of Galway, H91 W2TY, Ireland.
| | - Amal Aljaabary
- CÚRAM, SFI Research Centre for Medical Devices, University of Galway, H91 W2TY, Ireland.
| | - Pau Farràs
- CÚRAM, SFI Research Centre for Medical Devices, University of Galway, H91 W2TY, Ireland.
- School of Biological and Chemical Sciences, Ryan Institute, University of Galway, H91 TK33, Ireland
| | - Abhay Pandit
- CÚRAM, SFI Research Centre for Medical Devices, University of Galway, H91 W2TY, Ireland.
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3
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Nasuno R, Yoshikawa Y, Takagi H. Acetaldehyde reacts with a fluorescent nitric oxide probe harboring an o-phenylenediamine structure that interferes with fluorometry. Free Radic Biol Med 2022; 187:29-37. [PMID: 35605899 DOI: 10.1016/j.freeradbiomed.2022.05.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 05/06/2022] [Accepted: 05/17/2022] [Indexed: 11/18/2022]
Abstract
Nitric oxide (NO) is a ubiquitous signaling molecule, and thus a variety of methods have been developed for its detection and quantification. Fluorometric analyses using a fluorescent NO probe harboring an o-phenylenediamine (OPD) structure are widely used for NO analyses in various organisms, including yeast. Here, we discovered that an NO-independent fluorophore (UNK436) was generated from a fluorescent NO probe 4-amino-5-methylamino-2',7'-difluorofluorescein (DAF-FM), which has an OPD structure, in yeast cells. The molecules responsible for this undesirable fluorescence and their reaction mechanisms were analyzed. Our mass spectrometric analysis showed that two carbon atoms from glucose were incorporated into UNK436. Subsequent analyses indicated that a non-proteinous small compound leads to the synthesis of UNK436 through an oxidative reaction. Furthermore, our LC/MS/MS analysis of the reaction mixture of DAF-FM with acetaldehyde in combination with stable isotope labeling demonstrated that acetaldehyde reacts with DAF-FM oxidatively, generating UNK436. Another NO probe with an OPD structure, diaminorhodamine-4M, reacted with acetaldehyde in the same way to emit fluorescence. Based on our findings, we recommend that in researches using OPD-based fluorescent NO probes, alternative analyses also be performed to identify the reaction products of the probes with NO to avoid false-positives.
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Affiliation(s)
- Ryo Nasuno
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5, Takayama-cho, Ikoma, Nara, 630-0192, Japan.
| | - Yuki Yoshikawa
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5, Takayama-cho, Ikoma, Nara, 630-0192, Japan
| | - Hiroshi Takagi
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5, Takayama-cho, Ikoma, Nara, 630-0192, Japan
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4
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Suriany S, Xu I, Liu H, Ulker P, Fernandez GE, Sposto R, Borzage M, Wenby R, Meiselman HJ, Forman HJ, Coates TD, Detterich JA. Individual red blood cell nitric oxide production in sickle cell anemia: Nitric oxide production is increased and sickle shaped cells have unique morphologic change compared to discoid cells. Free Radic Biol Med 2021; 171:143-155. [PMID: 33974976 DOI: 10.1016/j.freeradbiomed.2021.05.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 05/01/2021] [Accepted: 05/04/2021] [Indexed: 10/21/2022]
Abstract
Sickle cell anemia (SCA) is characterized by decreased red blood cell (RBC) deformability due to polymerization of deoxygenated hemoglobin, leading to abnormal mechanical properties of RBC, increased cellular adhesion, and microcirculatory obstruction. Prior work has demonstrated that NO• influences RBC hydration and deformability and is produced at a basal rate that increases under shear stress in normal RBC. Nevertheless, the origin and physiological relevance of nitric oxide (NO•) production and scavenging in RBC remains unclear. We aimed to assess the basal and shear-mediated production of NO• in RBC from SCA patients and control (CTRL) subjects. RBCs loaded with a fluorescent NO• detector, DAF-FM (4-Amino-5-methylamino- 2',7'-difluorofluorescein diacetate), were imaged in microflow channels over 30-min without shear stress, followed by a 30-min period under 0.5Pa shear stress. We utilized non-specific nitric oxide synthase (NOS) blockade and carbon monoxide (CO) saturation of hemoglobin to assess the contribution of NOS and hemoglobin, respectively, to NO• production. Quantification of DAF-FM fluorescence intensity in individual RBC showed an increase in NO• in SCA RBC at the start of the basal period; however, both SCA and CTRL RBC increased NO• by a similar quantity under shear. A subpopulation of sickle-shaped RBC exhibited lower basal NO• production compared to discoid RBC from SCA group, and under shear became more circular in the direction of shear when compared to discoid RBC from SCA and CTRL, which elongated. Both CO and NOS inhibition caused a decrease in basal NO• production. Shear-mediated NO• production was decreased by CO in all RBC, but was decreased by NOS blockade only in SCA. In conclusion, total NO• production is increased and shear-mediated NO• production is preserved in SCA RBC in a NOS-dependent manner. Sickle shaped RBC with inclusions have higher NO• production and they become more circular rather than elongated with shear.
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Affiliation(s)
- Silvie Suriany
- Division of Cardiology, Children's Hospital of Los Angeles, USA
| | - Iris Xu
- Division of Hematology, Children's Hospital of Los Angeles, USA
| | - Honglei Liu
- Division of Cardiology, Children's Hospital of Los Angeles, USA
| | - Pinar Ulker
- Department of Physiology, Akdeniz University, Turkey
| | | | - Richard Sposto
- Division of Hematology, Children's Hospital of Los Angeles, USA
| | - Matthew Borzage
- Fetal and Neonatal Institute, Division of Neonatology Children's Hospital Los Angeles, USA
| | - Rosalinda Wenby
- Department of Physiology and Neuroscience, Keck School of Medicine, University of Southern California, USA
| | - Herbert J Meiselman
- Department of Physiology and Neuroscience, Keck School of Medicine, University of Southern California, USA
| | - Henry Jay Forman
- Leonard Davis School of Gerontology, University of Southern California, USA
| | - Thomas D Coates
- Division of Hematology, Children's Hospital of Los Angeles, USA
| | - Jon A Detterich
- Division of Cardiology, Children's Hospital of Los Angeles, USA; Department of Physiology and Neuroscience, Keck School of Medicine, University of Southern California, USA.
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5
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Brizzolari A, Dei Cas M, Cialoni D, Marroni A, Morano C, Samaja M, Paroni R, Rubino FM. High-Throughput Griess Assay of Nitrite and Nitrate in Plasma and Red Blood Cells for Human Physiology Studies under Extreme Conditions. Molecules 2021; 26:molecules26154569. [PMID: 34361720 PMCID: PMC8348835 DOI: 10.3390/molecules26154569] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/23/2021] [Accepted: 07/26/2021] [Indexed: 12/21/2022] Open
Abstract
The metabolism of nitric oxide plays an increasingly interesting role in the physiological response of the human body to extreme environmental conditions, such as underwater, in an extremely cold climate, and at low oxygen concentrations. Field studies need the development of analytical methods to measure nitrite and nitrate in plasma and red blood cells with high requirements of accuracy, precision, and sensitivity. An optimized spectrophotometric Griess method for nitrite–nitrate affords sensitivity in the low millimolar range and precision within ±2 μM for both nitrite and nitrate, requiring 100 μL of scarcely available plasma sample or less than 50 μL of red blood cells. A scheduled time-efficient procedure affords measurement of as many as 80 blood samples, with combined nitrite and nitrate measurement in plasma and red blood cells. Performance and usefulness were tested in pilot studies that use blood fractions deriving from subjects who dwelt in an Antarctica scientific station and on breath-holding and scuba divers who performed training at sea and in a land-based deep pool facility. The method demonstrated adequate to measure low basal concentrations of nitrite and high production of nitrate as a consequence of water column pressure-triggered vasodilatation in deep-water divers.
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Affiliation(s)
- Andrea Brizzolari
- Laboratory for Analytical Toxicology and Metabonomics, Department of Health Sciences, Università degli Studi di Milano, v. A. di Rudinì 8, 20142 Milan, Italy;
- DAN Europe Research Division, Contrada Padune, 64026 Roseto degli Abruzzi, Italy; (D.C.); (A.M.)
| | - Michele Dei Cas
- Laboratory of Clinical Chemistry and Mass Spectrometry, Department of Health Sciences, Università degli Studi di Milano, v. A. di Rudinì 8, 20142 Milan, Italy; (M.D.C.); (C.M.); (R.P.)
| | - Danilo Cialoni
- DAN Europe Research Division, Contrada Padune, 64026 Roseto degli Abruzzi, Italy; (D.C.); (A.M.)
| | - Alessandro Marroni
- DAN Europe Research Division, Contrada Padune, 64026 Roseto degli Abruzzi, Italy; (D.C.); (A.M.)
| | - Camillo Morano
- Laboratory of Clinical Chemistry and Mass Spectrometry, Department of Health Sciences, Università degli Studi di Milano, v. A. di Rudinì 8, 20142 Milan, Italy; (M.D.C.); (C.M.); (R.P.)
| | - Michele Samaja
- Laboratory of Biochemistry, Department of Health Sciences, Università degli Studi di Milano, v. A. di Rudinì 8, 20142 Milan, Italy;
| | - Rita Paroni
- Laboratory of Clinical Chemistry and Mass Spectrometry, Department of Health Sciences, Università degli Studi di Milano, v. A. di Rudinì 8, 20142 Milan, Italy; (M.D.C.); (C.M.); (R.P.)
| | - Federico Maria Rubino
- DAN Europe Research Division, Contrada Padune, 64026 Roseto degli Abruzzi, Italy; (D.C.); (A.M.)
- Correspondence:
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6
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Li J, LoBue A, Heuser SK, Leo F, Cortese-Krott MM. Using diaminofluoresceins (DAFs) in nitric oxide research. Nitric Oxide 2021; 115:44-54. [PMID: 34325012 DOI: 10.1016/j.niox.2021.07.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/09/2021] [Accepted: 07/20/2021] [Indexed: 11/28/2022]
Abstract
Diaminofluoresceins (DAFs) are fluorescent probes widely applied to measure nitric oxide (NO) formation in cells and tissues. The main advantages of these compounds are their availability and low cost, and the general availability of instruments able to detect green fluorescence in all laboratories; these include fluorimeters, flow cytometers, and fluorescent microscopes. What made these molecules particularly interesting for many scientists approaching the NO field is that they are apparently very easy to use, as compared with other techniques requiring specific instrumentation and knowledge like chemiluminescence and electron paramagnetic resonance. However, the reactivity and biological chemistry of these probes in the cellular environment is rather complex and still not fully understood. Moreover, secondary reactions with ascorbate, or interference with thiols occur in cells. Therefore, the use of DAFs requires specific experimental planning and a careful interpretation of the results obtained. In this methodological review, we described in detail what is known about the reactivity of DAFs, their application in biological assays, list some principles to help experimental planning, including the necessary controls, and list the caveats concerning result interpretation. These guiding principles will help to understand the "Method behind our DAF-madness".
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Affiliation(s)
- Junjie Li
- Myocardial Infarction Research Group, Department of Cardiology, Pulmonology and Angiology Medical Faculty, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Anthea LoBue
- Myocardial Infarction Research Group, Department of Cardiology, Pulmonology and Angiology Medical Faculty, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Sophia K Heuser
- Myocardial Infarction Research Group, Department of Cardiology, Pulmonology and Angiology Medical Faculty, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Francesca Leo
- Myocardial Infarction Research Group, Department of Cardiology, Pulmonology and Angiology Medical Faculty, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Miriam M Cortese-Krott
- Myocardial Infarction Research Group, Department of Cardiology, Pulmonology and Angiology Medical Faculty, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany.
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7
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Mahdi A, Cortese-Krott MM, Kelm M, Li N, Pernow J. Novel perspectives on redox signaling in red blood cells and platelets in cardiovascular disease. Free Radic Biol Med 2021; 168:95-109. [PMID: 33789125 DOI: 10.1016/j.freeradbiomed.2021.03.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 03/01/2021] [Accepted: 03/07/2021] [Indexed: 12/13/2022]
Abstract
The fundamental physiology of circulating red blood cells (RBCs) and platelets involving regulation of oxygen transport and hemostasis, respectively, are well-described in the literature. Their abundance in the circulation and their interaction with the vascular wall and each other have attracted the attention of other putative physiological and pathophysiological effects of these cells. RBCs and platelets are both important regulators of redox balance harboring powerful pro-oxidant and anti-oxidant (enzymatic and non-enzymatic) capacities. They are also involved in the regulation of vascular tone mainly via export of nitric oxide bioactivity and adenosine triphosphate. Of further importance are emerging observations that these cells undergo functional alterations when exposed to risk factors for cardiovascular disease and during developed cardiometabolic diseases. Under these conditions, the RBCs and platelets contribute to increased oxidative stress by their formation of reactive species including superoxide anion radical, hydrogen peroxide and peroxynitrite. These alterations trigger key changes in the vascular wall characterized by enhanced oxidative stress, reduced nitric oxide bioavailability and endothelial dysfunction. Additional pathophysiological effects are triggered in the heart resulting in increased susceptibility to ischemia-reperfusion injury with impairment in cardiac function. Pharmacological interventions aiming at restoring circulating cell function has been shown to exert marked beneficial effects on cardiovascular function. In this review, we summarize the current knowledge of RBC and platelet biology with special focus on redox biology, their roles in the development of cardiovascular disease and potential therapeutic strategies targeting RBC and platelet dysfunction. Finally, the complex and scarcely understood interaction between RBCs and platelets is discussed.
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Affiliation(s)
- Ali Mahdi
- Department of Medicine, Division of Cardiology, Karolinska Institutet, Stockholm, Sweden
| | - Miriam M Cortese-Krott
- Department of Cardiology, Pulmonology and Angiology Medical Faculty, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany; Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Malte Kelm
- Department of Cardiology, Pulmonology and Angiology Medical Faculty, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Nailin Li
- Department of Medicine, Division of Cardiovascular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - John Pernow
- Department of Medicine, Division of Cardiology, Karolinska Institutet, Stockholm, Sweden; Department of Cardiology, Heart and Vascular Division, Karolinska University Hospital, Stockholm, Sweden.
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8
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Nasuno R, Yoshikawa Y, Takagi H. The analytical method to identify the nitrogen source for nitric oxide synthesis. Biosci Biotechnol Biochem 2020; 85:211-214. [DOI: 10.1093/bbb/zbaa046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 10/05/2020] [Indexed: 12/23/2022]
Abstract
ABSTRACT
Nitric oxide (NO) is a ubiquitous signaling molecule synthesized from various nitrogen sources. An analytical method to identify a nitrogen source for NO generation was developed using liquid chromatography with tandem mass spectrometry in combination with stable isotope labeling. Our method successfully detected the 15N-labeled NO-containing compound generated from 15N-labeled substrate nitrite in vitro and in vivo.
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Affiliation(s)
- Ryo Nasuno
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Takayama-cho, Ikoma, Nara, Japan
| | - Yuki Yoshikawa
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Takayama-cho, Ikoma, Nara, Japan
| | - Hiroshi Takagi
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Takayama-cho, Ikoma, Nara, Japan
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9
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Barbarino F, Wäschenbach L, Cavalho-Lemos V, Dillenberger M, Becker K, Gohlke H, Cortese-Krott MM. Targeting spectrin redox switches to regulate the mechanoproperties of red blood cells. Biol Chem 2020; 402:317-331. [PMID: 33544503 DOI: 10.1515/hsz-2020-0293] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 11/17/2020] [Indexed: 12/16/2022]
Abstract
The mechanical properties of red blood cells (RBCs) are fundamental for their physiological role as gas transporters. RBC flexibility and elasticity allow them to survive the hemodynamic changes in the different regions of the vascular tree, to dynamically contribute to the flow thereby decreasing vascular resistance, and to deform during the passage through narrower vessels. RBC mechanoproperties are conferred mainly by the structural characteristics of their cytoskeleton, which consists predominantly of a spectrin scaffold connected to the membrane via nodes of actin, ankyrin and adducin. Changes in redox state and treatment with thiol-targeting molecules decrease the deformability of RBCs and affect the structure and stability of the spectrin cytoskeleton, indicating that the spectrin cytoskeleton may contain redox switches. In this perspective review, we revise current knowledge about the structural and functional characterization of spectrin cysteine redox switches and discuss the current lines of research aiming to understand the role of redox regulation on RBC mechanical properties. These studies may provide novel functional targets to modulate RBC function, blood viscosity and flow, and tissue perfusion in disease conditions.
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Affiliation(s)
- Frederik Barbarino
- Myocardial Infarction Research Laboratory, Department of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty, Heinrich Heine University, Postfach 128, Universitätsstrasse 1, D-40225, Düsseldorf, Germany
| | - Lucas Wäschenbach
- Institute for Pharmaceutical and Medicinal Chemistry, Heinrich Heine University, Universitätsstrasse 1, D-40225, Düsseldorf, Germany
| | - Virginia Cavalho-Lemos
- Myocardial Infarction Research Laboratory, Department of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty, Heinrich Heine University, Postfach 128, Universitätsstrasse 1, D-40225, Düsseldorf, Germany
| | - Melissa Dillenberger
- Biochemistry and Molecular Biology, Interdisciplinary Research Center, Justus Liebig University, D-35392, Giessen, Germany
| | - Katja Becker
- Biochemistry and Molecular Biology, Interdisciplinary Research Center, Justus Liebig University, D-35392, Giessen, Germany
| | - Holger Gohlke
- Institute for Pharmaceutical and Medicinal Chemistry, Heinrich Heine University, Universitätsstrasse 1, D-40225, Düsseldorf, Germany
- John von Neumann Institute for Computing (NIC), Jülich Supercomputing Centre (JSC), Institute of Biological Information Processing (IBI-7: Structural Biochemistry), Forschungszentrum Jülich GmbH, D-52425, Jülich, Germany
| | - Miriam M Cortese-Krott
- Myocardial Infarction Research Laboratory, Department of Cardiology, Pulmonology, and Vascular Medicine, Medical Faculty, Heinrich Heine University, Postfach 128, Universitätsstrasse 1, D-40225, Düsseldorf, Germany
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10
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Wischmann P, Kuhn V, Suvorava T, Muessig JM, Fischer JW, Isakson BE, Haberkorn SM, Flögel U, Schrader J, Jung C, Cortese-Krott MM, Heusch G, Kelm M. Anaemia is associated with severe RBC dysfunction and a reduced circulating NO pool: vascular and cardiac eNOS are crucial for the adaptation to anaemia. Basic Res Cardiol 2020; 115:43. [PMID: 32533377 PMCID: PMC7293199 DOI: 10.1007/s00395-020-0799-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 05/13/2020] [Indexed: 02/07/2023]
Abstract
Anaemia is frequently present in patients with acute myocardial infarction (AMI) and contributes to an adverse prognosis. We hypothesised that, besides reduced oxygen carrying capacity, anaemia is associated with (1) red blood cell (RBC) dysfunction and a reduced circulating nitric oxide (NO) pool, (2) compensatory enhancement of vascular and cardiac endothelial nitric oxide synthase (eNOS) activity, and (3) contribution of both, RBC dysfunction and reduced circulatory NO pool to left ventricular (LV) dysfunction and fatal outcome in AMI. In mouse models of subacute and chronic anaemia from repeated mild blood loss the circulating NO pool, RBC, cardiac and vascular function were analysed at baseline and in reperfused AMI. In anaemia, RBC function resulted in profound changes in membrane properties, enhanced turnover, haemolysis, dysregulation of intra-erythrocytotic redox state, and RBC-eNOS. RBC from anaemic mice and from anaemic patients with acute coronary syndrome impaired the recovery of contractile function of isolated mouse hearts following ischaemia/reperfusion. In anaemia, the circulating NO pool was reduced. The cardiac and vascular adaptation to anaemia was characterised by increased arterial eNOS expression and activity and an eNOS-dependent increase of end-diastolic left ventricular volume. Endothelial dysfunction induced through genetic or pharmacologic reduction of eNOS-activity abrogated the anaemia-induced cardio-circulatory compensation. Superimposed AMI was associated with decreased survival. In summary, moderate blood loss anaemia is associated with severe RBC dysfunction and reduced circulating NO pool. Vascular and cardiac eNOS are crucial for the cardio-circulatory adaptation to anaemia. RBC dysfunction together with eNOS dysfunction may contribute to adverse outcomes in AMI.
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Affiliation(s)
- Patricia Wischmann
- Department of Cardiology, Pulmonary Diseases, and Vascular Medicine, Medical Faculty, CARID Cardiovascular Research Institute of Duesseldorf, Heinrich Heine University of Duesseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.,Division of Cardiology, Pulmonary Diseases and Vascular Medicine, University Hospital of Duesseldorf, Düsseldorf, Germany.,Cardiovascular Research Laboratory, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Viktoria Kuhn
- Department of Cardiology, Pulmonary Diseases, and Vascular Medicine, Medical Faculty, CARID Cardiovascular Research Institute of Duesseldorf, Heinrich Heine University of Duesseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.,Division of Cardiology, Pulmonary Diseases and Vascular Medicine, University Hospital of Duesseldorf, Düsseldorf, Germany.,Cardiovascular Research Laboratory, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Tatsiana Suvorava
- Department of Cardiology, Pulmonary Diseases, and Vascular Medicine, Medical Faculty, CARID Cardiovascular Research Institute of Duesseldorf, Heinrich Heine University of Duesseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.,Division of Cardiology, Pulmonary Diseases and Vascular Medicine, University Hospital of Duesseldorf, Düsseldorf, Germany.,Cardiovascular Research Laboratory, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Johanna M Muessig
- Department of Cardiology, Pulmonary Diseases, and Vascular Medicine, Medical Faculty, CARID Cardiovascular Research Institute of Duesseldorf, Heinrich Heine University of Duesseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.,Division of Cardiology, Pulmonary Diseases and Vascular Medicine, University Hospital of Duesseldorf, Düsseldorf, Germany.,Cardiovascular Research Laboratory, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Jens W Fischer
- Department of Cardiology, Pulmonary Diseases, and Vascular Medicine, Medical Faculty, CARID Cardiovascular Research Institute of Duesseldorf, Heinrich Heine University of Duesseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.,Department of Pharmacology and Clinical Pharmacology, Heinrich-Heine University, Düsseldorf, Germany
| | - Brant E Isakson
- Department of Molecular Physiology and Biological Physics, Robert M. Berne Cardiovascular Research Centre, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Sebastian M Haberkorn
- Department of Cardiology, Pulmonary Diseases, and Vascular Medicine, Medical Faculty, CARID Cardiovascular Research Institute of Duesseldorf, Heinrich Heine University of Duesseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.,Division of Cardiology, Pulmonary Diseases and Vascular Medicine, University Hospital of Duesseldorf, Düsseldorf, Germany.,Department of Molecular Cardiology, Heinrich Heine University, Düsseldorf, Germany
| | - Ulrich Flögel
- Department of Cardiology, Pulmonary Diseases, and Vascular Medicine, Medical Faculty, CARID Cardiovascular Research Institute of Duesseldorf, Heinrich Heine University of Duesseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.,Division of Cardiology, Pulmonary Diseases and Vascular Medicine, University Hospital of Duesseldorf, Düsseldorf, Germany.,Department of Molecular Cardiology, Heinrich Heine University, Düsseldorf, Germany
| | - Jürgen Schrader
- Department of Cardiology, Pulmonary Diseases, and Vascular Medicine, Medical Faculty, CARID Cardiovascular Research Institute of Duesseldorf, Heinrich Heine University of Duesseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.,Department of Molecular Cardiology, Heinrich Heine University, Düsseldorf, Germany
| | - Christian Jung
- Department of Cardiology, Pulmonary Diseases, and Vascular Medicine, Medical Faculty, CARID Cardiovascular Research Institute of Duesseldorf, Heinrich Heine University of Duesseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.,Division of Cardiology, Pulmonary Diseases and Vascular Medicine, University Hospital of Duesseldorf, Düsseldorf, Germany.,Cardiovascular Research Laboratory, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Miriam M Cortese-Krott
- Department of Cardiology, Pulmonary Diseases, and Vascular Medicine, Medical Faculty, CARID Cardiovascular Research Institute of Duesseldorf, Heinrich Heine University of Duesseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.,Division of Cardiology, Pulmonary Diseases and Vascular Medicine, University Hospital of Duesseldorf, Düsseldorf, Germany.,Cardiovascular Research Laboratory, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Gerd Heusch
- Institute for Pathophysiology, West German Heart and Vascular Centre, University of Essen Medical School, Essen, Germany
| | - Malte Kelm
- Department of Cardiology, Pulmonary Diseases, and Vascular Medicine, Medical Faculty, CARID Cardiovascular Research Institute of Duesseldorf, Heinrich Heine University of Duesseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany. .,Division of Cardiology, Pulmonary Diseases and Vascular Medicine, University Hospital of Duesseldorf, Düsseldorf, Germany. .,Cardiovascular Research Laboratory, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany.
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11
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Nasuno R, Shino S, Yoshikawa Y, Yoshioka N, Sato Y, Kamiya K, Takagi H. Detection system of the intracellular nitric oxide in yeast by HPLC with a fluorescence detector. Anal Biochem 2020; 598:113707. [DOI: 10.1016/j.ab.2020.113707] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 03/25/2020] [Accepted: 03/31/2020] [Indexed: 12/28/2022]
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12
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Chen Y. Recent developments of fluorescent probes for detection and bioimaging of nitric oxide. Nitric Oxide 2020; 98:1-19. [DOI: 10.1016/j.niox.2020.02.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 02/13/2020] [Accepted: 02/17/2020] [Indexed: 12/11/2022]
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13
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Cellular microdomains for nitric oxide signaling in endothelium and red blood cells. Nitric Oxide 2020; 96:44-53. [PMID: 31911123 DOI: 10.1016/j.niox.2020.01.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 12/23/2019] [Accepted: 01/02/2020] [Indexed: 12/13/2022]
Abstract
There is accumulating evidence that biological membranes are not just homogenous lipid structures, but are highly organized in microdomains, i.e. compartmentalized areas of protein and lipid complexes, which facilitate necessary interactions for various signaling pathways. Each microdomain exhibits unique composition, membrane location and dynamics, which ultimately shape their functional characteristics. In the vasculature, microdomains are crucial for organizing and compartmentalizing vasodilatory signals that contribute to blood pressure homeostasis. In this review we aim to describe how membrane microdomains in both the endothelium and red blood cells allow context-specific regulation of the vasodilatory signal nitric oxide (NO) and its corresponding metabolic products, and how this results in tightly controlled systemic physiological responses. We will describe (1) structural characteristics of microdomains including lipid rafts and caveolae; (2) endothelial cell caveolae and how they participate in mechanosensing and NO-dependent mechanotransduction; (3) the myoendothelial junction of resistance arterial endothelial cells and how protein-protein interactions within it have profound systemic effects on blood pressure regulation, and (4) putative/proposed NO microdomains in RBCs and how they participate in control of systemic NO bioavailability. The sum of these discussions will provide a current view of NO regulation by cellular microdomains.
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14
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Zhu X, Gao Y. 17O NMR spectroscopy-assisted in vitro bioactivity studies of the intermediates formed via Na 2S and RSNO cross-linking reactions. RSC Adv 2020; 10:39617-39626. [PMID: 35515380 PMCID: PMC9057446 DOI: 10.1039/d0ra05054g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 10/22/2020] [Indexed: 11/22/2022] Open
Abstract
The cross-linking reaction between sulfide and S-nitrosothiol moieties has been intensively investigated and thionitrite/thionitrous acid (SNO−/HSNO) as well as nitrosopersulfide (SSNO−) were reported to be the intermediates that could serve as reservoirs for nitric oxide (NO). However, debate still exists regarding the stability and biological activity of SNO−/HSNO and SSNO−. In order to investigate the chemical properties and biological activity of SNO− and SSNO−, we set out to re-characterize the reaction intermediates using UV-Vis and 15N NMR spectroscopy techniques, as well as a new 17O NMR approach. The effects of SNO− and SSNO− on cellular NO and cGMP levels were assessed via cell culture experiments, and also the effects of SNO− and SSNO− on cell proliferation, migration, and capillary-like structure formation were evaluated with human umbilical vein endothelial cells (HUVEC). Through this work, the characteristic peaks and half-lives of SNO− and SSNO− were elucidated under various preparation conditions. The biological assays demonstrated that SSNO− increased the cellular NO and cGMP levels and also facilitated cell proliferation, migration and stimulated angiogenesis, while in contrast SNO− did not exhibit these effects. By using UV-Vis, 15N NMR and 17O NMR spectroscopy techniques, we characterized the intermediates (SSNO− and SNO−) obtained from RSNO and Na2S cross-linking reaction. We found that SSNO− could serve as NO reservoir in cell culture experiments.![]()
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Affiliation(s)
- Xingyu Zhu
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education
- School of Life Sciences
- Jilin University
- Changchun 130012
- China
| | - Yin Gao
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education
- School of Life Sciences
- Jilin University
- Changchun 130012
- China
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15
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Cirrik S, Ugurel E, Aksu AC, Oronsky B, Cabrales P, Yalcin O. Nitrite may serve as a combination partner and a biomarker for the anti-cancer activity of RRx-001. Biorheology 2019; 56:221-235. [DOI: 10.3233/bir-190213] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
| | - Elif Ugurel
- Koc University School of Medicine, , , Turkey
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16
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Möller MN, Rios N, Trujillo M, Radi R, Denicola A, Alvarez B. Detection and quantification of nitric oxide-derived oxidants in biological systems. J Biol Chem 2019; 294:14776-14802. [PMID: 31409645 DOI: 10.1074/jbc.rev119.006136] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The free radical nitric oxide (NO•) exerts biological effects through the direct and reversible interaction with specific targets (e.g. soluble guanylate cyclase) or through the generation of secondary species, many of which can oxidize, nitrosate or nitrate biomolecules. The NO•-derived reactive species are typically short-lived, and their preferential fates depend on kinetic and compartmentalization aspects. Their detection and quantification are technically challenging. In general, the strategies employed are based either on the detection of relatively stable end products or on the use of synthetic probes, and they are not always selective for a particular species. In this study, we describe the biologically relevant characteristics of the reactive species formed downstream from NO•, and we discuss the approaches currently available for the analysis of NO•, nitrogen dioxide (NO2 •), dinitrogen trioxide (N2O3), nitroxyl (HNO), and peroxynitrite (ONOO-/ONOOH), as well as peroxynitrite-derived hydroxyl (HO•) and carbonate anion (CO3 •-) radicals. We also discuss the biological origins of and analytical tools for detecting nitrite (NO2 -), nitrate (NO3 -), nitrosyl-metal complexes, S-nitrosothiols, and 3-nitrotyrosine. Moreover, we highlight state-of-the-art methods, alert readers to caveats of widely used techniques, and encourage retirement of approaches that have been supplanted by more reliable and selective tools for detecting and measuring NO•-derived oxidants. We emphasize that the use of appropriate analytical methods needs to be strongly grounded in a chemical and biochemical understanding of the species and mechanistic pathways involved.
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Affiliation(s)
- Matías N Möller
- Laboratorio de Fisicoquímica Biológica, Facultad de Ciencias, Universidad de la República, 11400 Montevideo, Uruguay.,Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Montevideo, Uruguay
| | - Natalia Rios
- Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Montevideo, Uruguay.,Departamento de Bioquímica, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Madia Trujillo
- Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Montevideo, Uruguay.,Departamento de Bioquímica, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Rafael Radi
- Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Montevideo, Uruguay.,Departamento de Bioquímica, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Ana Denicola
- Laboratorio de Fisicoquímica Biológica, Facultad de Ciencias, Universidad de la República, 11400 Montevideo, Uruguay.,Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Montevideo, Uruguay
| | - Beatriz Alvarez
- Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Montevideo, Uruguay .,Laboratorio de Enzimología, Facultad de Ciencias, Universidad de la República, 11400 Montevideo, Uruguay
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17
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Schieler BM, Soni MV, Brown CM, Coolen MJL, Fredricks H, Van Mooy BAS, Hirsh DJ, Bidle KD. Nitric oxide production and antioxidant function during viral infection of the coccolithophore Emiliania huxleyi. ISME JOURNAL 2019; 13:1019-1031. [PMID: 30607029 PMCID: PMC6461841 DOI: 10.1038/s41396-018-0325-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 10/14/2018] [Accepted: 11/04/2018] [Indexed: 12/03/2022]
Abstract
Emiliania huxleyi is a globally important marine phytoplankton that is routinely infected by viruses. Understanding the controls on the growth and demise of E. huxleyi blooms is essential for predicting the biogeochemical fate of their organic carbon and nutrients. In this study, we show that the production of nitric oxide (NO), a gaseous, membrane-permeable free radical, is a hallmark of early-stage lytic infection in E. huxleyi by Coccolithoviruses, both in culture and in natural populations in the North Atlantic. Enhanced NO production was detected both intra- and extra-cellularly in laboratory cultures, and treatment of cells with an NO scavenger significantly reduced viral production. Pre-treatment of exponentially growing E. huxleyi cultures with the NO donor S-nitroso-N-acetylpenicillamine (SNAP) prior to challenge with hydrogen peroxide (H2O2) led to greater cell survival, suggesting that NO may have a cellular antioxidant function. Indeed, cell lysates generated from cultures treated with SNAP and undergoing infection displayed enhanced ability to detoxify H2O2. Lastly, we show that fluorescent indicators of cellular ROS, NO, and death, in combination with classic DNA- and lipid-based biomarkers of infection, can function as real-time diagnostic tools to identify and contextualize viral infection in natural E. huxleyi blooms.
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Affiliation(s)
- Brittany M Schieler
- Department of Marine and Coastal Sciences, Rutgers University, 71 Dudley Road, New Brunswick, NJ, 08901, USA
| | - Megha V Soni
- Department of Marine and Coastal Sciences, Rutgers University, 71 Dudley Road, New Brunswick, NJ, 08901, USA
| | - Christopher M Brown
- Department of Marine and Coastal Sciences, Rutgers University, 71 Dudley Road, New Brunswick, NJ, 08901, USA
| | - Marco J L Coolen
- WA-Organic and Isotope Geochemistry Center, School of Earth and Planetary Sciences, Curtin University, Bentley, WA, 6102, Australia
| | - Helen Fredricks
- Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, 02543, USA
| | - Benjamin A S Van Mooy
- Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, 02543, USA
| | - Donald J Hirsh
- Department of Chemistry, The College of New Jersey, Ewing, NJ, 08628, USA
| | - Kay D Bidle
- Department of Marine and Coastal Sciences, Rutgers University, 71 Dudley Road, New Brunswick, NJ, 08901, USA.
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18
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Diederich L, Suvorava T, Sansone R, Keller TCS, Barbarino F, Sutton TR, Kramer CM, Lückstädt W, Isakson BE, Gohlke H, Feelisch M, Kelm M, Cortese-Krott MM. On the Effects of Reactive Oxygen Species and Nitric Oxide on Red Blood Cell Deformability. Front Physiol 2018; 9:332. [PMID: 29867516 PMCID: PMC5958211 DOI: 10.3389/fphys.2018.00332] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 03/16/2018] [Indexed: 01/08/2023] Open
Abstract
The main function of red blood cells (RBCs) is the transport of respiratory gases along the vascular tree. To fulfill their task, RBCs are able to elastically deform in response to mechanical forces and, pass through the narrow vessels of the microcirculation. Decreased RBC deformability was observed in pathological conditions linked to increased oxidative stress or decreased nitric oxide (NO) bioavailability, like hypertension. Treatments with oxidants and with NO were shown to affect RBC deformability ex vivo, but the mechanisms underpinning these effects are unknown. In this study we investigate whether changes in intracellular redox status/oxidative stress or nitrosation reactions induced by reactive oxygen species (ROS) or NO may affect RBC deformability. In a case-control study comparing RBCs from healthy and hypertensive participants, we found that RBC deformability was decreased, and levels of ROS were increased in RBCs from hypertensive patients as compared to RBCs from aged-matched healthy controls, while NO levels in RBCs were not significantly different. To study the effects of oxidants on RBC redox state and deformability, RBCs from healthy volunteers were treated with increasing concentrations of tert-butylhydroperoxide (t-BuOOH). We found that high concentrations of t-BuOOH (≥ 1 mM) significantly decreased the GSH/GSSG ratio in RBCs, decreased RBC deformability and increased blood bulk viscosity. Moreover, RBCs from Nrf2 knockout (KO) mice, a strain genetically deficient in a number of antioxidant/reducing enzymes, were more susceptible to t-BuOOH-induced impairment in RBC deformability as compared to wild type (WT) mice. To study the role of NO in RBC deformability we treated RBC suspensions from human volunteers with NO donors and nitrosothiols and analyzed deformability of RBCs from mice lacking the endothelial NO synthase (eNOS). We found that NO donors induced S-nitrosation of the cytoskeletal protein spectrin, but did not affect human RBC deformability or blood bulk viscosity; moreover, under unstressed conditions RBCs from eNOS KO mice showed fully preserved RBC deformability as compared to WT mice. Pre-treatment of human RBCs with nitrosothiols rescued t-BuOOH-mediated loss of RBC deformability. Taken together, these findings suggest that NO does not affect RBC deformability per se, but preserves RBC deformability in conditions of oxidative stress.
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Affiliation(s)
- Lukas Diederich
- Cardiovascular Research Laboratory, Division of Cardiology, Pneumology and Vascular Medicine, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Tatsiana Suvorava
- Cardiovascular Research Laboratory, Division of Cardiology, Pneumology and Vascular Medicine, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Roberto Sansone
- Cardiovascular Research Laboratory, Division of Cardiology, Pneumology and Vascular Medicine, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - T C Stevenson Keller
- Cardiovascular Research Laboratory, Division of Cardiology, Pneumology and Vascular Medicine, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany.,Department of Molecular Physiology and Biological Physics, Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA, United States
| | - Frederik Barbarino
- Cardiovascular Research Laboratory, Division of Cardiology, Pneumology and Vascular Medicine, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Thomas R Sutton
- Clinical & Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Christian M Kramer
- Cardiovascular Research Laboratory, Division of Cardiology, Pneumology and Vascular Medicine, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Wiebke Lückstädt
- Cardiovascular Research Laboratory, Division of Cardiology, Pneumology and Vascular Medicine, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Brant E Isakson
- Department of Molecular Physiology and Biological Physics, Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA, United States
| | - Holger Gohlke
- Faculty of Mathematics and Natural Sciences, Institute for Pharmaceutical and Medicinal Chemistry, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Martin Feelisch
- Clinical & Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Malte Kelm
- Cardiovascular Research Laboratory, Division of Cardiology, Pneumology and Vascular Medicine, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany.,Medical Faculty, Cardiovascular Research Institute Düsseldorf, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Miriam M Cortese-Krott
- Cardiovascular Research Laboratory, Division of Cardiology, Pneumology and Vascular Medicine, Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
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19
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Kubacka M, Kotańska M, Kazek G, Waszkielewicz AM, Marona H, Filipek B, Mogilski S. Involvement of the NO/sGC/cGMP/K + channels pathway in vascular relaxation evoked by two non-quinazoline α 1-adrenoceptor antagonists. Biomed Pharmacother 2018; 103:157-166. [PMID: 29653360 DOI: 10.1016/j.biopha.2018.04.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 04/04/2018] [Accepted: 04/05/2018] [Indexed: 02/06/2023] Open
Abstract
The aim of this study was to explore the α1-adrenoceptor-independent mechanisms involved in the vasorelaxant properties of two non-quinazoline α1-adrenoceptors antagonists (MH-76 and MH-79). Endothelium intact and endothelium denuded rat aorta was contracted with 1 μM phenylephrine to plateau, and the vasodilatory effect of MH-76 and MH-79 was examined in the absence or presence of inhibitors of the different signal transduction pathways. cGMP concetration was measured in rat aorta (enzyme immunoassay kit). In human aortic endothelial cells (HAEC) NO production was examined using a DAF-FM DA fluorescent indicator, whereas in human aortic smooth muscle cells the influence of the title compounds on K+ efflux was evaluated. The vasorelaxant effect of MH-76 and MH-79 was attenuated by endothelium removal, Nω-Nitro-l-arginine methyl ester (L-NAME) and 1H-[1,2,4]Oxadiazolo[4,3-a]quinoxalin-1-one (ODQ) pretreatment to the level characteristic for α1-adrenoreceptor blocking activity. In addition, the MH-76 and MH-79 induced relaxation was reduced by K+ channels blockers. In endothelium intact rat aorta, MH-76 and MH-79 caused an increase in cGMP level, whereas in HAEC they increased NO generation. In contrast, the reference, quinazoline based α1-antagonist prazosin, did not influence NO production. Our findings suggest that the mechanisms underlying the vasodilatory properties of non-quinazoline based α1-adrenoceptors antagonists MH-76 and MH-79 involve not only α1-adrenoceptor blocking activity but also the activation of the endothelial NO-cGMP signalling pathway and the subsequent opening of K+ channels. Our studies show that such double mechanism of action is superior to pure α1-adrenoceptor blockade, and may be considered as a promising alternative for the prevention and treatment of cardiovascular diseases.
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Affiliation(s)
- Monika Kubacka
- Department of Pharmacodynamics, Faculty of Pharmacy, Medical College, Jagiellonian University, Medyczna 9, 30-688, Kraków, Poland.
| | - Magdalena Kotańska
- Department of Pharmacodynamics, Faculty of Pharmacy, Medical College, Jagiellonian University, Medyczna 9, 30-688, Kraków, Poland
| | - Grzegorz Kazek
- Department of Pharmacological Screening, Chair of Pharmacodynamics, Faculty of Pharmacy, Medical College, Jagiellonian University, Medyczna 9, 30-688, Kraków, Poland
| | - Anna Maria Waszkielewicz
- Department of Bioorganic Chemistry, Chair of Organic Chemistry, Faculty of Pharmacy, Medical College, Jagiellonian University, Medyczna 9, 30-688, Kraków, Poland
| | - Henryk Marona
- Department of Bioorganic Chemistry, Chair of Organic Chemistry, Faculty of Pharmacy, Medical College, Jagiellonian University, Medyczna 9, 30-688, Kraków, Poland
| | - Barbara Filipek
- Department of Pharmacodynamics, Faculty of Pharmacy, Medical College, Jagiellonian University, Medyczna 9, 30-688, Kraków, Poland
| | - Szczepan Mogilski
- Department of Pharmacodynamics, Faculty of Pharmacy, Medical College, Jagiellonian University, Medyczna 9, 30-688, Kraków, Poland
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20
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Pal HA, Mohapatra S, Gupta V, Ghosh S, Verma S. Self-assembling soft structures for intracellular NO release and promotion of neurite outgrowth. Chem Sci 2017; 8:6171-6175. [PMID: 28989648 PMCID: PMC5627600 DOI: 10.1039/c6sc05017d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 06/19/2017] [Indexed: 12/03/2022] Open
Abstract
Nitric oxide (NO), an endogenously produced free radical species, is an extremely important signalling molecule in several biochemical processes related to neurotransmission, neuronal communication, and vasodilation, to name a few. Other than relying on endogenous synthesis, intracellular NO delivery presents an interesting challenge to fully exploit the therapeutic potential of this gaseous molecule. We have applied a self-assembling peptide conjugate strategy to devise a construct carrying a NO-release arm, which can be activated under standard redox conditions. Consequently, a tryptophan-based peptide carrier was designed, which self-assembled in the solution phase to afford soft nanospherical structures, and released NO in Neuro2a cell line, resulting in neurite outgrowth.
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Affiliation(s)
- Hilal Ahmad Pal
- Department of Chemistry and Center for Environmental Science and Engineering , Indian Institute of Technology Kanpur , Kanpur 208016 , UP , India .
| | - Saswat Mohapatra
- Department of Organic and Medicinal Chemistry , CSIR-Indian Institute of Chemical Biology Kolkata , 4, Raja S. C. Mullick Road , Jadavpur 700032 , WB , India
| | - Varsha Gupta
- Department of Organic and Medicinal Chemistry , CSIR-Indian Institute of Chemical Biology Kolkata , 4, Raja S. C. Mullick Road , Jadavpur 700032 , WB , India
| | - Surajit Ghosh
- Department of Organic and Medicinal Chemistry , CSIR-Indian Institute of Chemical Biology Kolkata , 4, Raja S. C. Mullick Road , Jadavpur 700032 , WB , India
| | - Sandeep Verma
- Department of Chemistry and Center for Environmental Science and Engineering , Indian Institute of Technology Kanpur , Kanpur 208016 , UP , India .
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21
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Daiber A, Oelze M, Steven S, Kröller-Schön S, Münzel T. Taking up the cudgels for the traditional reactive oxygen and nitrogen species detection assays and their use in the cardiovascular system. Redox Biol 2017; 12:35-49. [PMID: 28212522 PMCID: PMC5312509 DOI: 10.1016/j.redox.2017.02.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 01/30/2017] [Accepted: 02/01/2017] [Indexed: 02/08/2023] Open
Abstract
Reactive oxygen and nitrogen species (RONS such as H2O2, nitric oxide) confer redox regulation of essential cellular functions (e.g. differentiation, proliferation, migration, apoptosis), initiate and catalyze adaptive stress responses. In contrast, excessive formation of RONS caused by impaired break-down by cellular antioxidant systems and/or insufficient repair of the resulting oxidative damage of biomolecules may lead to appreciable impairment of cellular function and in the worst case to cell death, organ dysfunction and severe disease phenotypes of the entire organism. Therefore, the knowledge of the severity of oxidative stress and tissue specific localization is of great biological and clinical importance. However, at this level of investigation quantitative information may be enough. For the development of specific drugs, the cellular and subcellular localization of the sources of RONS or even the nature of the reactive species may be of great importance, and accordingly, more qualitative information is required. These two different philosophies currently compete with each other and their different needs (also reflected by different detection assays) often lead to controversial discussions within the redox research community. With the present review we want to shed some light on these different philosophies and needs (based on our personal views), but also to defend some of the traditional assays for the detection of RONS that work very well in our hands and to provide some guidelines how to use and interpret the results of these assays. We will also provide an overview on the "new assays" with a brief discussion on their strengths but also weaknesses and limitations.
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Affiliation(s)
- Andreas Daiber
- Laboratory of Molecular Cardiology, Center of Cardiology, Cardiology 1, Medical Center of the Johannes Gutenberg University, Mainz, Germany.
| | - Matthias Oelze
- Laboratory of Molecular Cardiology, Center of Cardiology, Cardiology 1, Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Sebastian Steven
- Laboratory of Molecular Cardiology, Center of Cardiology, Cardiology 1, Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Swenja Kröller-Schön
- Laboratory of Molecular Cardiology, Center of Cardiology, Cardiology 1, Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Thomas Münzel
- Laboratory of Molecular Cardiology, Center of Cardiology, Cardiology 1, Medical Center of the Johannes Gutenberg University, Mainz, Germany
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22
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Erkens R, Suvorava T, Kramer CM, Diederich LD, Kelm M, Cortese-Krott MM. Modulation of Local and Systemic Heterocellular Communication by Mechanical Forces: A Role of Endothelial Nitric Oxide Synthase. Antioxid Redox Signal 2017; 26:917-935. [PMID: 27927026 PMCID: PMC5455615 DOI: 10.1089/ars.2016.6904] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In this review, we discuss the role of nitric oxide (NO) as a key physiological mechanotransducer modulating both local and systemic heterocellular communication and contributing to the integrated (patho)physiology of the cardiovascular system. A deeper understanding of mechanotransduction-mediated local and systemic nodes controlling heterocellular communication between the endothelium, blood cells, and other cell types (e.g., cardiomyocytes) may suggest novel therapeutic strategies for endothelial dysfunction and cardiovascular disease. Recent Advances: Mechanical forces acting on mechanoreceptors on endothelial cells activate the endothelial NO synthase (eNOS) to produce NO. NO participates in (i) abluminal heterocellular communication, inducing vasorelaxation, and thereby regulating vascular tone and blood pressure; (ii) luminal heterocellular communication, inhibiting platelet aggregation, and controlling hemostasis; and (iii) systemic heterocellular communication, contributing to adaptive physiological processes in response to exercise and remote ischemic preconditioning. Interestingly, shear-induced eNOS-dependent activation of vascular heterocellular communication constitutes the molecular basis of all methods applied in the clinical routine for evaluation of endothelial function. Critical Issues and Future Directions: The integrated physiology of heterocellular communication is still not fully understood. Dedicated experimental models are needed to analyze messengers and mechanisms underpinning heterocellular communication in response to physical forces in the cardiovascular system (and elsewhere). Antioxid. Redox Signal. 26, 917-935.
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Affiliation(s)
- Ralf Erkens
- Cardiovascular Research Laboratory, Division of Cardiology, Pneumology and Angiology, Medical Faculty, Heinrich Heine University of Düsseldorf , Düsseldorf, Germany
| | - Tatsiana Suvorava
- Cardiovascular Research Laboratory, Division of Cardiology, Pneumology and Angiology, Medical Faculty, Heinrich Heine University of Düsseldorf , Düsseldorf, Germany
| | - Christian M Kramer
- Cardiovascular Research Laboratory, Division of Cardiology, Pneumology and Angiology, Medical Faculty, Heinrich Heine University of Düsseldorf , Düsseldorf, Germany
| | - Lukas D Diederich
- Cardiovascular Research Laboratory, Division of Cardiology, Pneumology and Angiology, Medical Faculty, Heinrich Heine University of Düsseldorf , Düsseldorf, Germany
| | - Malte Kelm
- Cardiovascular Research Laboratory, Division of Cardiology, Pneumology and Angiology, Medical Faculty, Heinrich Heine University of Düsseldorf , Düsseldorf, Germany
| | - Miriam M Cortese-Krott
- Cardiovascular Research Laboratory, Division of Cardiology, Pneumology and Angiology, Medical Faculty, Heinrich Heine University of Düsseldorf , Düsseldorf, Germany
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Xia N, Weisenburger S, Koch E, Burkart M, Reifenberg G, Förstermann U, Li H. Restoration of perivascular adipose tissue function in diet-induced obese mice without changing bodyweight. Br J Pharmacol 2017; 174:3443-3453. [PMID: 28055105 PMCID: PMC5610154 DOI: 10.1111/bph.13703] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 12/22/2016] [Accepted: 01/03/2017] [Indexed: 01/02/2023] Open
Abstract
Background and Purpose We have recently shown that a reduced function of endothelial nitric oxide synthase (eNOS) in the perivascular adipose tissue (PVAT) contributes crucially to obesity‐induced vascular dysfunction in mice. The current study was conducted to test the hypothesis that vascular dysfunction in obesity can be reversed by in vivo improvement of PVAT eNOS activity. Experimental Approach Male C57BL/6J mice were fed a high‐fat diet (HFD) for 22 weeks to induce obesity. During the last 4 weeks of HFD feeding, the obese mice were treated p.o. with the standardized Crataegus extract WS® 1442, which has been shown previously to improve eNOS activity. Key Results Diet‐induced obesity in mice markedly reduced the vasodilator response of thoracic aorta to acetylcholine in wire myograph experiments. Strikingly, this vascular dysfunction was only evident in PVAT‐containing aorta but not in PVAT‐free aorta. In vivo treatment of obese mice with WS® 1442 had no effect on body weight or epididymal fat mass, but completely restored the vascular function of PVAT‐containing aorta. Feeding a HFD led to a reduced phosphorylation and an enhanced acetylation of PVAT eNOS, both effects were reversed by WS® 1442 treatment. Conclusion and Implications PVAT plays a key role in vascular dysfunction in diet‐induced obese mice. Not obesity itself, but a PVAT dysfunction is responsible for obesity‐induced vascular disorders. Improving PVAT function by pharmacological means (e.g. with WS® 1442) can ameliorate vascular function even without reducing body weight or fat mass. Linked Articles This article is part of a themed section on Molecular Mechanisms Regulating Perivascular Adipose Tissue – Potential Pharmacological Targets? To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v174.20/issuetoc
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Affiliation(s)
- Ning Xia
- Department of Pharmacology, Johannes Gutenberg University Medical Center, Mainz, Germany
| | | | - Egon Koch
- Dr. Willmar Schwabe GmbH & Co. KG, Karlsruhe, Germany
| | | | - Gisela Reifenberg
- Department of Pharmacology, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Ulrich Förstermann
- Department of Pharmacology, Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Huige Li
- Department of Pharmacology, Johannes Gutenberg University Medical Center, Mainz, Germany.,Center for Translational Vascular Biology (CTVB), Johannes Gutenberg University Medical Center, Mainz, Germany.,German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany
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24
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Neumann L, Mueller M, Moos V, Heller F, Meyer TF, Loddenkemper C, Bojarski C, Fehlings M, Doerner T, Allers K, Aebischer T, Ignatius R, Schneider T. Mucosal Inducible NO Synthase-Producing IgA+ Plasma Cells in Helicobacter pylori-Infected Patients. THE JOURNAL OF IMMUNOLOGY 2016; 197:1801-8. [PMID: 27456483 DOI: 10.4049/jimmunol.1501330] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 06/20/2016] [Indexed: 12/20/2022]
Abstract
The mucosal immune system is relevant for homeostasis, immunity, and also pathological conditions in the gastrointestinal tract. Inducible NO synthase (iNOS)-dependent production of NO is one of the factors linked to both antimicrobial immunity and pathological conditions. Upregulation of iNOS has been observed in human Helicobacter pylori infection, but the cellular sources of iNOS are ill defined. Key differences in regulation of iNOS expression impair the translation from mouse models to human medicine. To characterize mucosal iNOS-producing leukocytes, biopsy specimens from H. pylori-infected patients, controls, and participants of a vaccination trial were analyzed by immunohistochemistry, along with flow cytometric analyses of lymphocytes for iNOS expression and activity. We newly identified mucosal IgA-producing plasma cells (PCs) as one major iNOS(+) cell population in H. pylori-infected patients and confirmed intracellular NO production. Because we did not detect iNOS(+) PCs in three distinct infectious diseases, this is not a general feature of mucosal PCs under conditions of infection. Furthermore, numbers of mucosal iNOS(+) PCs were elevated in individuals who had cleared experimental H. pylori infection compared with those who had not. Thus, IgA(+) PCs expressing iNOS are described for the first time, to our knowledge, in humans. iNOS(+) PCs are induced in the course of human H. pylori infection, and their abundance seems to correlate with the clinical course of the infection.
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Affiliation(s)
- Laura Neumann
- Medical Clinic I, Gastroenterology, Infectious Diseases and Rheumatology, Charité-University Medicine Berlin, 12203 Berlin, Germany;
| | - Mattea Mueller
- Medical Clinic I, Gastroenterology, Infectious Diseases and Rheumatology, Charité-University Medicine Berlin, 12203 Berlin, Germany
| | - Verena Moos
- Medical Clinic I, Gastroenterology, Infectious Diseases and Rheumatology, Charité-University Medicine Berlin, 12203 Berlin, Germany
| | - Frank Heller
- Practice for Gastroenterology, 12163 Berlin, Germany
| | - Thomas F Meyer
- Department of Molecular Biology, Max Planck Institute for Infection Biology, 10117 Berlin, Germany
| | | | - Christian Bojarski
- Medical Clinic I, Gastroenterology, Infectious Diseases and Rheumatology, Charité-University Medicine Berlin, 12203 Berlin, Germany
| | - Michael Fehlings
- Department of Molecular Biology, Max Planck Institute for Infection Biology, 10117 Berlin, Germany
| | - Thomas Doerner
- Department of Medicine, Rheumatology and Clinical Immunology, Charité-University Medicine Berlin, 10117 Berlin, Germany
| | - Kristina Allers
- Medical Clinic I, Gastroenterology, Infectious Diseases and Rheumatology, Charité-University Medicine Berlin, 12203 Berlin, Germany
| | | | - Ralf Ignatius
- Institute for Microbiology and Hygiene, Charité-University Medicine Berlin, 12203 Berlin, Germany
| | - Thomas Schneider
- Medical Clinic I, Gastroenterology, Infectious Diseases and Rheumatology, Charité-University Medicine Berlin, 12203 Berlin, Germany
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25
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Liu T, Schroeder HJ, Wilson SM, Terry MH, Romero M, Longo LD, Power GG, Blood AB. Local and systemic vasodilatory effects of low molecular weight S-nitrosothiols. Free Radic Biol Med 2016; 91:215-23. [PMID: 26686469 PMCID: PMC4761500 DOI: 10.1016/j.freeradbiomed.2015.12.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 10/02/2015] [Accepted: 12/10/2015] [Indexed: 12/21/2022]
Abstract
S-nitrosothiols (SNOs) such as S-nitroso-L-cysteine (L-cysNO) are endogenous compounds with potent vasodilatory activity. During circulation in the blood, the NO moiety can be exchanged among various thiol-containing compounds by S-transnitrosylation, resulting in SNOs with differing capacities to enter the cell (membrane permeability). To determine whether the vasodilating potency of SNOs is dependent upon membrane permeability, membrane-permeable L-cysNO and impermeable S-nitroso-D-cysteine (D-cysNO) and S-nitroso-glutathione (GSNO) were infused into one femoral artery of anesthetized adult sheep while measuring bilateral femoral and systemic vascular conductances. L-cysNO induced vasodilation in the infused hind limb, whereas D-cysNO and GSNO did not. L-cysNO also increased intracellular NO in isolated arterial smooth muscle cells, whereas GSNO did not. The infused SNOs remained predominantly in a low molecular weight form during first-passage through the hind limb vasculature, but were converted into high molecular weight SNOs upon systemic recirculation. At systemic concentrations of ~0.6 μmol/L, all three SNOs reduced mean arterial blood pressure by ~50%, with pronounced vasodilation in the mesenteric bed. Pharmacokinetics of L-cysNO and GSNO were measured in vitro and in vivo and correlated with their hemodynamic effects, membrane permeability, and S-transnitrosylation. These results suggest local vasodilation by SNOs in the hind limb requires membrane permeation, whereas systemic vasodilation does not. The systemic hemodynamic effects of SNOs occur after equilibration of the NO moiety amongst the plasma thiols via S-transnitrosylation.
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Affiliation(s)
- Taiming Liu
- Department of Pediatrics, Division of Neonatology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Hobe J Schroeder
- Center for Perinatal Biology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Sean M Wilson
- Center for Perinatal Biology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Michael H Terry
- Department of Respiratory Care, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Monica Romero
- Advanced Microscopy Imaging Core, Loma Linda University School of Medicine, Loma Linda, CA 92354
| | - Lawrence D Longo
- Center for Perinatal Biology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Gordon G Power
- Center for Perinatal Biology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Arlin B Blood
- Department of Pediatrics, Division of Neonatology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA; Center for Perinatal Biology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA.
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26
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Song JL, Yuan Y, Tan HB, Wu JW, Huang RM, Li H, Xu ZF, Na N, Qiu SX. Euryachins A and B, a new type of diterpenoids from Eurya chinensis with potent NO production inhibitory activity. RSC Adv 2016. [DOI: 10.1039/c6ra11994h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Euryachins A (1) and B (2), new typediterpenoid euryamanes, were isolated from the branches of Eurya chinensis. The absolute configuration of 1 was determined by single-crystal X-ray diffraction. Both 1 and 2 exhibited significant NO production inhibitory activity.
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Affiliation(s)
- Jia-Ling Song
- Program for Natural Product Chemical Biology
- Key Laboratory of Plant Resources
- Conservation and Sustainable Utilization
- South China Botanical Garden
- Chinese Academy of Sciences
| | - Yao Yuan
- Program for Natural Product Chemical Biology
- Key Laboratory of Plant Resources
- Conservation and Sustainable Utilization
- South China Botanical Garden
- Chinese Academy of Sciences
| | - Hai-Bo Tan
- Program for Natural Product Chemical Biology
- Key Laboratory of Plant Resources
- Conservation and Sustainable Utilization
- South China Botanical Garden
- Chinese Academy of Sciences
| | - Jie-Wei Wu
- Program for Natural Product Chemical Biology
- Key Laboratory of Plant Resources
- Conservation and Sustainable Utilization
- South China Botanical Garden
- Chinese Academy of Sciences
| | - Ri-Ming Huang
- Program for Natural Product Chemical Biology
- Key Laboratory of Plant Resources
- Conservation and Sustainable Utilization
- South China Botanical Garden
- Chinese Academy of Sciences
| | - Heng Li
- Department of Kidney Transplantation
- The Third Affiliated Hospital of Sun Yat-sen University
- Guangzhou
- P. R. China
| | - Zhi-Fang Xu
- Program for Natural Product Chemical Biology
- Key Laboratory of Plant Resources
- Conservation and Sustainable Utilization
- South China Botanical Garden
- Chinese Academy of Sciences
| | - Ning Na
- Department of Kidney Transplantation
- The Third Affiliated Hospital of Sun Yat-sen University
- Guangzhou
- P. R. China
| | - Sheng-Xiang Qiu
- Program for Natural Product Chemical Biology
- Key Laboratory of Plant Resources
- Conservation and Sustainable Utilization
- South China Botanical Garden
- Chinese Academy of Sciences
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Rezq S, Abdel-Rahman AA. Central GPR109A Activation Mediates Glutamate-Dependent Pressor Response in Conscious Rats. J Pharmacol Exp Ther 2015; 356:456-65. [PMID: 26621144 DOI: 10.1124/jpet.115.229146] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 11/02/2015] [Indexed: 12/11/2022] Open
Abstract
G protein-coupled receptor 109A (GPR109A) activation by its ligand nicotinic acid (NA) in immune cells increases Ca(2+) levels, and Ca(2+) induces glutamate release and oxidative stress in central blood pressure (BP)-regulating nuclei, for example, the rostral ventrolateral medulla (RVLM), leading to sympathoexcitation. Despite NA's ability to reach the brain, the expression and function of its receptor GPR109A in the RVLM remain unknown. We hypothesized that NA activation of RVLM GPR109A causes Ca(2+)-dependent l-glutamate release and subsequently increases neuronal oxidative stress, sympathetic activity, and BP. To test this hypothesis, we adopted a multilevel approach, which included pharmacologic in vivo studies along with ex vivo and in vitro molecular studies in rat pheochromocytoma cell line (PC12) cells (which exhibit neuronal phenotype). We present the first evidence for GPR109A expression in the RVLM and in PC12 cells. Next, we showed that RVLM GPR109A activation (NA) caused pressor and bradycardic responses in conscious rats. The resemblance of these responses to those caused by intra-RVLM glutamate and their attenuation by NMDA receptor (NMDAR) blockade (2-amino-5-phosphonopentanoic acid) and enhancement by l-glutamate uptake inhibition (l-trans-pyrrolidine-2,4-dicarboxylic acid, PDC) supported our hypothesis. NA increased Ca(2+), glutamate, nitric oxide and reactive oxygen species (ROS) levels in PC12 cells and increased RVLM ROS levels. The inactive NA analog isonicotinic acid failed to replicate the cardiovascular and biochemical effects of NA. Further, GPR109A knockdown (siRNA) abrogated the biochemical effects of NA in PC12 cells. These novel findings yield new insight into the role of RVLM GPR109A in central BP control.
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Affiliation(s)
- Samar Rezq
- Department of Pharmacology, School of Medicine, East Carolina University, North Carolina
| | - Abdel A Abdel-Rahman
- Department of Pharmacology, School of Medicine, East Carolina University, North Carolina
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28
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Liu M, Zollbrecht C, Peleli M, Lundberg JO, Weitzberg E, Carlström M. Nitrite-mediated renal vasodilatation is increased during ischemic conditions via cGMP-independent signaling. Free Radic Biol Med 2015; 84:154-160. [PMID: 25841777 DOI: 10.1016/j.freeradbiomed.2015.03.025] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 03/17/2015] [Accepted: 03/23/2015] [Indexed: 11/16/2022]
Abstract
The kidney is vulnerable to hypoxia, and substantial efforts have been made to ameliorate renal ischemic injury secondary to pathological conditions. Stimulation of the nitrate-nitrite-nitric oxide pathway is associated with renal and cardiovascular protection in disease models, but less is known about the vascular effects during renal ischemia. This study was aimed at investigating the vascular effects of nitrite in the kidney during normoxic and ischemic conditions. Using a multiwire myograph system, we assessed nitrite-mediated relaxation (10(-9)-10(-4)mol/L) in isolated and preconstricted renal interlobar arteries from C57BL/6 mice under normal conditions (pO2 13kPa; pH 7.4) and with low oxygen tension and low pH to mimic ischemia (pO2 3kPa; pH 6.6). Xanthine oxidoreductase expression was analyzed by quantitative PCR, and production of reactive nitrogen species was measured by DAF-FM DA fluorescence. During normoxia significant vasodilatation (15±3%) was observed only at the highest concentration of nitrite, which was dependent on NO-sGC-cGMP signaling. The vasodilatory responses to nitrite were greatly sensitized and enhanced during hypoxia with low pH, demonstrating significant dilatation (11±1%) already in the physiological range (10(-8)mol/L), with a maximum response of 27±2% at 10(-4) mol/L. In contrast to normoxia, and to that observed with a classical NO donor (DEA NONOate), this sensitization was independent of sGC-cGMP signaling. Moreover, inhibition of various enzymatic systems reported to reduce nitrite in other vascular beds, i.e., aldehyde oxidase (raloxifene), aldehyde dehydrogenase (cyanamide), and NO synthase (L-NAME), had no effect on the nitrite response. However, inhibition of xanthine oxidoreductase (XOR; febuxostat or allopurinol) abolished the sensitized response to nitrite during hypoxia and acidosis. In conclusion, in contrast to normoxia, nitrite exerted potent vasorelaxation during ischemic conditions already at physiological concentrations. This effect was dependent on functional XOR but independent of classical downstream signaling by sGC-cGMP.
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Affiliation(s)
- Ming Liu
- Department of Physiology and Pharmacology, Karolinska Institutet, S-17177 Stockholm, Sweden
| | - Christa Zollbrecht
- Department of Physiology and Pharmacology, Karolinska Institutet, S-17177 Stockholm, Sweden
| | - Maria Peleli
- Department of Physiology and Pharmacology, Karolinska Institutet, S-17177 Stockholm, Sweden
| | - Jon O Lundberg
- Department of Physiology and Pharmacology, Karolinska Institutet, S-17177 Stockholm, Sweden
| | - Eddie Weitzberg
- Department of Physiology and Pharmacology, Karolinska Institutet, S-17177 Stockholm, Sweden
| | - Mattias Carlström
- Department of Physiology and Pharmacology, Karolinska Institutet, S-17177 Stockholm, Sweden.
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Gorska M, Kuban-Jankowska A, Zmijewski M, Gammazza AM, Cappello F, Wnuk M, Gorzynik M, Rzeszutek I, Daca A, Lewinska A, Wozniak M. DNA strand breaks induced by nuclear hijacking of neuronal NOS as an anti-cancer effect of 2-methoxyestradiol. Oncotarget 2015; 6:15449-63. [PMID: 25972363 PMCID: PMC4558163 DOI: 10.18632/oncotarget.3913] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 04/24/2015] [Indexed: 12/11/2022] Open
Abstract
2-Methoxyestradiol (2-ME) is a physiological metabolite of 17β-estradiol. At pharmacological concentrations, 2-ME inhibits colon, breast and lung cancer in tumor models. Here we investigated the effect of physiologically relevant concentrations of 2-ME in osteosarcoma cell model. We demonstrated that 2-ME increased nuclear localization of neuronal nitric oxide synthase, resulting in nitro-oxidative DNA damage. This in turn caused cell cycle arrest and apoptosis in osteosarcoma cells. We suggest that 2-ME is a naturally occurring hormone with potential anti-cancer properties.
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Affiliation(s)
- Magdalena Gorska
- Department of Medical Chemistry, Medical University of Gdansk, Gdansk, Poland
| | | | - Michal Zmijewski
- Department of Histology, Medical University of Gdansk, Gdansk, Poland
| | - Antonella Marino Gammazza
- Department of Experimental Biomedicine and Clinical Neurosciences, Section of Human Anatomy “Emerico Luna”, University of Palermo, Palermo, Italy
- Euro-Mediterranean Institute of Science and Technology, Palermo, Italy
| | - Francesco Cappello
- Department of Experimental Biomedicine and Clinical Neurosciences, Section of Human Anatomy “Emerico Luna”, University of Palermo, Palermo, Italy
- Euro-Mediterranean Institute of Science and Technology, Palermo, Italy
| | - Maciej Wnuk
- Department of Genetics, University of Rzeszow, Rzeszow, Poland
| | - Monika Gorzynik
- Department of Medical Chemistry, Medical University of Gdansk, Gdansk, Poland
| | - Iwona Rzeszutek
- Department of Genetics, University of Rzeszow, Rzeszow, Poland
| | - Agnieszka Daca
- Department of Pathophysiology, Medical University of Gdansk, Gdansk, Poland
- Department of Pathology and Experimental Rheumatology, Medical University of Gdansk, Gdansk, Poland
| | - Anna Lewinska
- Department of Biochemistry and Cell Biology, University of Rzeszow, Poland
| | - Michal Wozniak
- Department of Medical Chemistry, Medical University of Gdansk, Gdansk, Poland
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Cerny O, Kamanova J, Masin J, Bibova I, Skopova K, Sebo P. Bordetella pertussis Adenylate Cyclase Toxin Blocks Induction of Bactericidal Nitric Oxide in Macrophages through cAMP-Dependent Activation of the SHP-1 Phosphatase. THE JOURNAL OF IMMUNOLOGY 2015; 194:4901-13. [PMID: 25876760 DOI: 10.4049/jimmunol.1402941] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 03/10/2015] [Indexed: 12/23/2022]
Abstract
The adenylate cyclase toxin-hemolysin (CyaA) plays a key role in the virulence of Bordetella pertussis. CyaA penetrates complement receptor 3-expressing phagocytes and catalyzes uncontrolled conversion of cytosolic ATP to the key second messenger molecule cAMP. This paralyzes the capacity of neutrophils and macrophages to kill bacteria by complement-dependent oxidative burst and opsonophagocytic mechanisms. We show that cAMP signaling through the protein kinase A (PKA) pathway activates Src homology domain 2 containing protein tyrosine phosphatase (SHP) 1 and suppresses production of bactericidal NO in macrophage cells. Selective activation of PKA by the cell-permeable analog N(6)-benzoyladenosine-3',5'-cyclic monophosphate interfered with LPS-induced inducible NO synthase (iNOS) expression in RAW264.7 macrophages, whereas inhibition of PKA by H-89 largely restored the production of iNOS in CyaA-treated murine macrophages. CyaA/cAMP signaling induced SHP phosphatase-dependent dephosphorylation of the c-Fos subunit of the transcription factor AP-1 and thereby inhibited TLR4-triggered induction of iNOS gene expression. Selective small interfering RNA knockdown of SHP-1, but not of the SHP-2 phosphatase, rescued production of TLR-inducible NO in toxin-treated cells. Finally, inhibition of SHP phosphatase activity by NSC87877 abrogated B. pertussis survival inside murine macrophages. These results reveal that an as yet unknown cAMP-activated signaling pathway controls SHP-1 phosphatase activity and may regulate numerous receptor signaling pathways in leukocytes. Hijacking of SHP-1 by CyaA action then enables B. pertussis to evade NO-mediated killing in sentinel cells of innate immunity.
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Affiliation(s)
- Ondrej Cerny
- Laboratory of Molecular Biology of Bacterial Pathogens, Institute of Microbiology of the ASCR, v.v.i., Czech Academy of Sciences, 142 20, Prague 4, Czech Republic
| | - Jana Kamanova
- Laboratory of Molecular Biology of Bacterial Pathogens, Institute of Microbiology of the ASCR, v.v.i., Czech Academy of Sciences, 142 20, Prague 4, Czech Republic
| | - Jiri Masin
- Laboratory of Molecular Biology of Bacterial Pathogens, Institute of Microbiology of the ASCR, v.v.i., Czech Academy of Sciences, 142 20, Prague 4, Czech Republic
| | - Ilona Bibova
- Laboratory of Molecular Biology of Bacterial Pathogens, Institute of Microbiology of the ASCR, v.v.i., Czech Academy of Sciences, 142 20, Prague 4, Czech Republic
| | - Karolina Skopova
- Laboratory of Molecular Biology of Bacterial Pathogens, Institute of Microbiology of the ASCR, v.v.i., Czech Academy of Sciences, 142 20, Prague 4, Czech Republic
| | - Peter Sebo
- Laboratory of Molecular Biology of Bacterial Pathogens, Institute of Microbiology of the ASCR, v.v.i., Czech Academy of Sciences, 142 20, Prague 4, Czech Republic
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Pearson T, McArdle A, Jackson MJ. Nitric oxide availability is increased in contracting skeletal muscle from aged mice, but does not differentially decrease muscle superoxide. Free Radic Biol Med 2015; 78:82-8. [PMID: 25462644 PMCID: PMC4291149 DOI: 10.1016/j.freeradbiomed.2014.10.505] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 09/26/2014] [Accepted: 10/13/2014] [Indexed: 11/03/2022]
Abstract
Reactive oxygen and nitrogen species have been implicated in the loss of skeletal muscle mass and function that occurs during aging. Nitric oxide (NO) and superoxide are generated by skeletal muscle and where these are generated in proximity their chemical reaction to form peroxynitrite can compete with the superoxide dismutation to hydrogen peroxide. Changes in NO availability may therefore theoretically modify superoxide and peroxynitrite activities in tissues, but published data are contradictory regarding aging effects on muscle NO availability. We hypothesised that an age-related increase in NO generation might increase peroxynitrite generation in muscles from old mice, leading to an increased nitration of muscle proteins and decreased superoxide availability. This was examined using fluorescent probes and an isolated fiber preparation to examine NO content and superoxide in the cytosol and mitochondria of muscle fibers from adult and old mice both at rest and following contractile activity. We also examined the 3-nitrotyrosine (3-NT) and peroxiredoxin 5 (Prx5) content of muscles from mice as markers of peroxynitrite activity. Data indicate that a substantial age-related increase in NO levels occurred in muscle fibers during contractile activity and this was associated with an increase in muscle eNOS. Muscle proteins from old mice also showed an increased 3-NT content. Inhibition of NOS indicated that NO decreased superoxide bioavailability in muscle mitochondria, although this effect was not age related. Thus increased NO in muscles of old mice was associated with an increased 3-NT content that may potentially contribute to age-related degenerative changes in skeletal muscle.
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Affiliation(s)
- T Pearson
- MRC-Arthritis Research UK Centre for Integrated research into Musculoskeletal Ageing (CIMA), Department of Musculoskeletal Biology Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, L69 3GA, UK
| | - A McArdle
- MRC-Arthritis Research UK Centre for Integrated research into Musculoskeletal Ageing (CIMA), Department of Musculoskeletal Biology Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, L69 3GA, UK
| | - M J Jackson
- MRC-Arthritis Research UK Centre for Integrated research into Musculoskeletal Ageing (CIMA), Department of Musculoskeletal Biology Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, L69 3GA, UK.
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Damasceno FC, Facci RR, da Silva TM, Toledo JC. Mechanisms and kinetic profiles of superoxide-stimulated nitrosative processes in cells using a diaminofluorescein probe. Free Radic Biol Med 2014; 77:270-80. [PMID: 25242205 DOI: 10.1016/j.freeradbiomed.2014.09.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 09/01/2014] [Accepted: 09/06/2014] [Indexed: 11/18/2022]
Abstract
In this study, we examined the mechanisms and kinetic profiles of intracellular nitrosative processes using diaminofluorescein (DAF-2) as a target in RAW 264.7 cells. The intracellular formation of the fluorescent, nitrosated product diaminofluorescein triazol (DAFT) from both endogenous and exogenous nitric oxide (NO) was prevented by deoxygenation and by cell membrane-permeable superoxide (O2(-)) scavengers but not by extracellular bovine Cu,Zn-SOD. In addition, the DAFT formation rate decreased in the presence of cell membrane-permeable Mn porphyrins that are known to scavenge peroxynitrite (ONOO(-)) but was enhanced by HCO3(-)/CO2. Together, these results indicate that nitrosative processes in RAW 264.7 cells depend on endogenous intracellular O2(-) and are stimulated by ONOO(-)/CO2-derived radical oxidants. The N2O3 scavenger sodium azide (NaN3) only partially attenuated the DAFT formation rate and only with high NO (>120 nM), suggesting that DAFT formation occurs by nitrosation (azide-susceptible DAFT formation) and predominantly by oxidative nitrosylation (azide-resistant DAFT formation). Interestingly, the DAFT formation rate increased linearly with NO concentrations of up to 120-140 nM but thereafter underwent a sharp transition and became insensitive to NO. This behavior indicates the sudden exhaustion of an endogenous cell substrate that reacts rapidly with NO and induces nitrosative processes, consistent with the involvement of intracellular O2(-). On the other hand, intracellular DAFT formation stimulated by a fixed flux of xanthine oxidase-derived extracellular O2(-) that also occurs by nitrosation and oxidative nitrosylation increased, peaked, and then decreased with increasing NO, as previously observed. Thus, our findings complementarily show that intra- and extracellular O2(-)-dependent nitrosative processes occurring by the same chemical mechanisms do not necessarily depend on NO concentration and exhibit different unusual kinetic profiles with NO dynamics, depending on the biological compartment in which NO and O2(-) interact.
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Affiliation(s)
- Fernando Cruvinel Damasceno
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, CEP 14040-901, Ribeirão Preto, SP, Brazil
| | - Rômulo Rodrigues Facci
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, CEP 14040-901, Ribeirão Preto, SP, Brazil
| | - Thalita Marques da Silva
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, CEP 14040-901, Ribeirão Preto, SP, Brazil
| | - José Carlos Toledo
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, CEP 14040-901, Ribeirão Preto, SP, Brazil.
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Cortese-Krott MM, Kelm M. Endothelial nitric oxide synthase in red blood cells: key to a new erythrocrine function? Redox Biol 2014; 2:251-8. [PMID: 24494200 PMCID: PMC3909820 DOI: 10.1016/j.redox.2013.12.027] [Citation(s) in RCA: 126] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 12/21/2013] [Indexed: 02/06/2023] Open
Abstract
Red blood cells (RBC) have been considered almost exclusively as a transporter of metabolic gases and nutrients for the tissues. It is an accepted dogma that RBCs take up and inactivate endothelium-derived NO via rapid reaction with oxyhemoglobin to form methemoglobin and nitrate, thereby limiting NO available for vasodilatation. Yet it has also been shown that RBCs not only act as "NO sinks", but exert an erythrocrine function - i.e an endocrine function of RBC - by synthesizing, transporting and releasing NO metabolic products and ATP, thereby potentially controlling systemic NO bioavailability and vascular tone. Recent work from our and others laboratory demonstrated that human RBCs carry an active type 3, endothelial NO synthase (eNOS), constitutively producing NO under normoxic conditions, the activity of which is compromised in patients with coronary artery disease. In this review we aim to discuss the potential role of red cell eNOS in RBC signaling and function, and to critically revise evidence to this date showing a role of non-endothelial circulating eNOS in cardiovascular pathophysiology.
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Affiliation(s)
- Miriam M Cortese-Krott
- Cardiovascular Research Laboratory, Department of Cardiology, Pneumology and Angiology, Medical Faculty, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Malte Kelm
- Cardiovascular Research Laboratory, Department of Cardiology, Pneumology and Angiology, Medical Faculty, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
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Depletion of circulating blood NOS3 increases severity of myocardial infarction and left ventricular dysfunction. Basic Res Cardiol 2013; 109:398. [PMID: 24346018 PMCID: PMC3898535 DOI: 10.1007/s00395-013-0398-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 11/25/2013] [Accepted: 12/06/2013] [Indexed: 01/14/2023]
Abstract
Nitric oxide (NO) derived from endothelial NO synthase (NOS3) plays a central role in myocardial ischemia/reperfusion (I/R)-injury. Subsets of circulating blood cells, including red blood cells (RBCs), carry a NOS3 and contribute to blood pressure regulation and RBC nitrite/nitrate formation. We hypothesized that the circulating blood born NOS3 also modulates the severity of myocardial infarction in disease models. We cross-transplanted bone marrow in wild-type and NOS3−/− mice with wild-type mice, producing chimeras expressing NOS3 only in vascular endothelium (BC−/EC+) or in both blood cells and vascular endothelium (BC+/EC+). After 60-min closed-chest coronary occlusion followed by 24 h reperfusion, cardiac function, infarct size (IS), NOx levels, RBCs NO formation, RBC deformability, and vascular reactivity were assessed. At baseline, BC−/EC+ chimera had lower nitrite levels in blood plasma (BC−/EC+: 2.13 ± 0.27 μM vs. BC+/EC+ 3.17 ± 0.29 μM; *p < 0.05), reduced DAF FM associated fluorescence within RBCs (BC−/EC+: 538.4 ± 12.8 mean fluorescence intensity (MFI) vs. BC+/EC+: 619.6 ± 6.9 MFI; ***p < 0.001) and impaired erythrocyte deformability (BC−/EC+: 0.33 ± 0.01 elongation index (EI) vs. BC+/EC+: 0.36 ± 0.06 EI; *p < 0.05), while vascular reactivity remained unaffected. Area at risk did not differ, but infarct size was higher in BC−/EC+ (BC−/EC+: 26 ± 3 %; BC+/EC+: 14 ± 2 %; **p < 0.01), resulting in decreased ejection fraction (BC−/EC+ 46 ± 2 % vs. BC+/EC+: 52 ± 2 %; *p < 0.05) and increased end-systolic volume. Application of the NOS inhibitor S-ethylisothiourea hydrobromide was associated with larger infarct size in BC+/EC+, whereas infarct size in BC−/EC+ mice remained unaffected. Reduced infarct size, preserved cardiac function, NO levels in RBC and RBC deformability suggest a modulating role of circulating NOS3 in an acute model of myocardial I/R in chimeric mice.
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Liu C, Zhang X, Zhou JX, Wei W, Liu DH, Ke P, Zhang GF, Cai GJ, Su DF. The protective action of ketanserin against lipopolysaccharide-induced shock in mice is mediated by inhibiting inducible NO synthase expression via the MEK/ERK pathway. Free Radic Biol Med 2013; 65:658-666. [PMID: 23954471 DOI: 10.1016/j.freeradbiomed.2013.07.045] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Revised: 07/26/2013] [Accepted: 07/31/2013] [Indexed: 12/20/2022]
Abstract
Nitric oxide (NO) plays an important role in the pathogenesis of endotoxic shock. This work tested the hypothesis that ketanserin could attenuate endotoxic shock by inhibiting the expression of inducible NO synthase (iNOS). The results demonstrated that ketanserin could inhibit iNOS expression in the heart, lungs, liver, and kidneys and nitrate production in the serum upon endotoxic shock in mice. In RAW264.7 cells, ketanserin significantly inhibited the expression of iNOS and decreased the production of NO, TNFα, IL-6, and reactive oxygen species upon lipopolysaccharide (LPS) challenge. Ketanserin also increased the level of ATP and mitochondrial membrane potential in RAW264.7 cells upon LPS exposure. LPS-induced iNOS expression was inhibited by the 5-HT2A receptor antagonist ritanserin and not the α1 receptor antagonist prazosin. Knockdown of 5-HT2A receptor by siRNA abolished the inhibitory effect of ketanserin on the expression of iNOS. These results indicated that the inhibitory effect of ketanserin on the expression of iNOS is mediated by blocking the 5-HT2A receptor. Furthermore, ketanserin significantly inhibited the activation of ERK1/2 and NF-κB signal. Pretreatment with PD184352, a specific inhibitor of ERK1/2, blocked the inhibitory effect of ketanserin on the expression of iNOS and NO production, indicating a critical role for the MEK/ERK1/2 signaling pathway. Collectively, our findings indicate that inhibition of the expression of iNOS via the MEK/ERK pathway mediates the protective effects of ketanserin against LPS-induced shock in mice.
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Affiliation(s)
- Chong Liu
- Department of Pharmacology, Second Military Medical University, Shanghai 200433, China.
| | - Xin Zhang
- Department of Pharmacology, Second Military Medical University, Shanghai 200433, China
| | - Jv-Xiang Zhou
- Department of Pharmacology, Second Military Medical University, Shanghai 200433, China
| | - Wei Wei
- Department of Pharmacology, Second Military Medical University, Shanghai 200433, China
| | - Dian-Hua Liu
- Department of Pharmacology, Second Military Medical University, Shanghai 200433, China
| | - Ping Ke
- Department of Pharmacology, Second Military Medical University, Shanghai 200433, China
| | - Gu-Fang Zhang
- Department of Pharmacology, Second Military Medical University, Shanghai 200433, China
| | - Guo-Jun Cai
- Department of Pharmacology, Second Military Medical University, Shanghai 200433, China.
| | - Ding-Feng Su
- Department of Pharmacology, Second Military Medical University, Shanghai 200433, China.
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Stegbauer J, Friedrich S, Potthoff SA, Broekmans K, Cortese-Krott MM, Quack I, Rump LC, Koesling D, Mergia E. Phosphodiesterase 5 attenuates the vasodilatory response in renovascular hypertension. PLoS One 2013; 8:e80674. [PMID: 24260450 PMCID: PMC3829872 DOI: 10.1371/journal.pone.0080674] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 10/05/2013] [Indexed: 11/19/2022] Open
Abstract
NO/cGMP signaling plays an important role in vascular relaxation and regulation of blood pressure. The key enzyme in the cascade, the NO-stimulated cGMP-forming guanylyl cyclase exists in two enzymatically indistinguishable isoforms (NO-GC1, NO-GC2) with NO-GC1 being the major NO-GC in the vasculature. Here, we studied the NO/cGMP pathway in renal resistance arteries of NO-GC1 KO mice and its role in renovascular hypertension induced by the 2-kidney-1-clip-operation (2K1C). In the NO-GC1 KOs, relaxation of renal vasculature as determined in isolated perfused kidneys was reduced in accordance with the marked reduction of cGMP-forming activity (80%). Noteworthy, increased eNOS-catalyzed NO formation was detected in kidneys of NO-GC1 KOs. Upon the 2K1C operation, NO-GC1 KO mice developed hypertension but the increase in blood pressures was not any higher than in WT. Conversely, operated WT mice showed a reduction of cGMP-dependent relaxation of renal vessels, which was not found in the NO-GC1 KOs. The reduced relaxation in operated WT mice was restored by sildenafil indicating that enhanced PDE5-catalyzed cGMP degradation most likely accounts for the attenuated vascular responsiveness. PDE5 activation depends on allosteric binding of cGMP. Because cGMP levels are lower, the 2K1C-induced vascular changes do not occur in the NO-GC1 KOs. In support of a higher PDE5 activity, sildenafil reduced blood pressure more efficiently in operated WT than NO-GC1 KO mice. All together our data suggest that within renovascular hypertension, cGMP-based PDE5 activation terminates NO/cGMP signaling thereby providing a new molecular basis for further pharmacological interventions.
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Affiliation(s)
- Johannes Stegbauer
- Klinik für Nephrologie, Universitätsklinikum Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Sebastian Friedrich
- Klinik für Nephrologie, Universitätsklinikum Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Sebastian A. Potthoff
- Klinik für Nephrologie, Universitätsklinikum Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | | | - Miriam M. Cortese-Krott
- Klinik für Kardiologie, Universitätsklinikum Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Ivo Quack
- Klinik für Nephrologie, Universitätsklinikum Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Lars Christian Rump
- Klinik für Nephrologie, Universitätsklinikum Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany
| | - Doris Koesling
- Institut für Pharmakologie Ruhr-Universität Bochum, Bochum, Germany
| | - Evanthia Mergia
- Institut für Pharmakologie Ruhr-Universität Bochum, Bochum, Germany
- * E-mail:
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Guterbaum TJ, Braunstein TH, Fossum A, Holstein-Rathlou NH, Torp-Pedersen CT, Domínguez H. Endothelial nitric oxide synthase phosphorylation at Threonine 495 and mitochondrial reactive oxygen species formation in response to a high H₂O₂ concentration. J Vasc Res 2013; 50:410-20. [PMID: 24008236 DOI: 10.1159/000354225] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Accepted: 07/05/2013] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Hydrogen peroxide (H₂O₂) is produced in vessels during ischemia/reperfusion and during inflammation, both leading to vascular dysfunction. We investigated cellular pathways involved in endothelial nitric oxide synthase (eNOS) phosphorylation at Threonine 495 (Thr(495)) in human umbilical vein endothelial cells (HUVECs) exposed to H₂O₂. METHODS HUVECs were exposed to 400 μM H₂O₂ for 30 min. Phosphorylation at Thr(495) was assessed by Western blotting and reactive oxygen species (ROS) monitored by flow cytometry. Protein kinase C (PKC) pathways were investigated by pretreatment with PKC-β inhibitor ruboxistaurin or pan-PKC inhibitor GF109203X. In addition, we investigated ROCK and ERK pathways by MEKK1/2 inhibitor U0126 and ROCK inhibitor Y27632. RESULTS H₂O₂ increased eNOS phosphorylation at Thr(495) (to 176% vs. control (100%), p < 0.001) along with increased mitochondrial ROS formation (from 19.7 to 45.3%, p < 0.01). This rise in phosphorylation could be prevented by U0126 and Y27632 in a dose-dependent manner, but did not result in lowered mitochondrial ROS formation. Conversely, addition of the antioxidant N-acetyl-L-cysteine only prevented mitochondrial ROS formation but did not prevent phosphorylation of eNOS Thr(495). CONCLUSION H₂O₂-mediated phosphorylation of eNOS Thr(495) is mediated by ROCK and ERK activity, but not by PKC, and is uncoupled from mitochondrial ROS signaling. Furthermore, ERK inhibition increased mitochondrial ROS formation.
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Affiliation(s)
- T J Guterbaum
- The Danish National Research Foundation Center for Cardiac Arrhythmia, University of Copenhagen, Copenhagen, Denmark
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Wang X, Fang H, Huang Z, Shang W, Hou T, Cheng A, Cheng H. Imaging ROS signaling in cells and animals. J Mol Med (Berl) 2013; 91:917-27. [PMID: 23873151 PMCID: PMC3730091 DOI: 10.1007/s00109-013-1067-4] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Revised: 06/08/2013] [Accepted: 06/17/2013] [Indexed: 11/16/2022]
Abstract
Reactive oxygen species (ROS) act as essential cellular messengers, redox regulators, and, when in excess, oxidative stressors that are widely implicated in pathologies of cancer and cardiovascular and neurodegenerative diseases. Understanding such complexity of the ROS signaling is critically hinged on the ability to visualize and quantify local, compartmental, and global ROS dynamics at high selectivity, sensitivity, and spatiotemporal resolution. The past decade has witnessed significant progress in ROS imaging at levels of intact cells, whole organs or tissues, and even live organisms. In particular, major advances include the development of novel synthetic or genetically encoded fluorescent protein-based ROS indicators, the use of protein indicator-expressing animal models, and the advent of in vivo imaging technology. Innovative ROS imaging has led to important discoveries in ROS signaling—for example, mitochondrial superoxide flashes as elemental ROS signaling events and hydrogen peroxide transients for wound healing. This review aims at providing an update of the current status in ROS imaging, while identifying areas of insufficient knowledge and highlighting emerging research directions.
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Affiliation(s)
- Xianhua Wang
- State Key Laboratory of Biomembrane and Membrane Biotechnology, Institute of Molecular Medicine, Peking-Tsinghua Center for Life Sciences, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Peking University, Beijing 100871, China
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Curtis B, Payne TJ, Ash DE, Mohanty DK. Secondary amines containing one aromatic nitro group: preparation, nitrosation, sustained nitric oxide release, and the synergistic effects of released nitric oxide and an arginase inhibitor on vascular smooth muscle cell proliferation. Bioorg Med Chem 2013; 21:1123-35. [PMID: 23375096 PMCID: PMC3574223 DOI: 10.1016/j.bmc.2012.12.043] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 12/16/2012] [Accepted: 12/28/2012] [Indexed: 01/05/2023]
Abstract
Atherosclerosis, a leading cause of death worldwide, is associated with the excessive proliferation of vascular smooth muscle cells. Nitrogen monoxide, more commonly known as nitric oxide, inhibits this uncontrolled proliferation. Herein we report the preparation of two families of nitric oxide donors; beginning with the syntheses of secondary amine precursors, obtained through the reaction between 2 equiv of various monoamines with 2,4 or 2,6-difluoronitrobenzene. The purified secondary amines were nitrosated then subjected to a Griess reagent test to examine the slow and sustained nitric oxide release rate for each compound in both the absence and presence of reduced glutathione. The release rate profiles of these two isomeric families of NO-donors were strongly dependent on the number of side chain methylene units and the relative orientations of the nitro groups with respect to the N-nitroso moieties. The nitrosated compounds were then added to human aortic smooth muscle cell cultures, individually and in tandem with S-2-amino-6-boronic acid (ABH), a potent arginase inhibitor. Cell viability studies indicated a lack of toxicity of the amine precursors, in addition to anti-proliferative effects exhibited by the nitrosated compounds, which were enhanced in the presence of ABH.
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Affiliation(s)
- Brandon Curtis
- Department of Chemistry, Central Michigan University, Mt. Pleasant, MI-48858, USA
| | | | - David E. Ash
- Department of Chemistry, Central Michigan University, Mt. Pleasant, MI-48858, USA
| | - Dillip K. Mohanty
- Department of Chemistry, Central Michigan University, Mt. Pleasant, MI-48858, USA
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