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Moraes RA, Brito DS, Araujo FA, Jesus RLC, Silva LB, Sá DS, Silva da Silva CD, Pernomian L, Wenceslau CF, Priviero F, Webb RC, Silva DF. NONO2P, a novel nitric oxide donor, causes vasorelaxation through NO/sGC/PKG pathway, K + channels opening and SERCA activation. Eur J Pharmacol 2024; 979:176822. [PMID: 39047965 DOI: 10.1016/j.ejphar.2024.176822] [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: 02/04/2024] [Revised: 07/01/2024] [Accepted: 07/17/2024] [Indexed: 07/27/2024]
Abstract
BACKGROUND & AIMS The treatment of cardiovascular diseases (CVD) could greatly benefit from using nitric oxide (NO) donors. This study aimed to investigate the mechanisms of action of NONO2P that contribute to the observed responses in the mesenteric artery. The hypothesis was that NONO2P would have similar pharmacological actions to sodium nitroprusside (SNP) and NO. METHODS Male Wistar rats were euthanized to isolate the superior mesenteric artery for isometric tension recordings. NO levels were measured using the DAF-FM/DA dye, and cyclic guanosine monophosphate (cGMP) levels were determined using a cGMP-ELISA Kit. RESULTS NONO2P presented a similar maximum efficacy to SNP. The free radical of NO (NO•) scavengers (PTIO; 100 μM and hydroxocobalamin; 30 μM) and nitroxyl anion (NO-) scavenger (L-cysteine; 3 mM) decreased relaxations promoted by NONO2P. The presence of the specific soluble guanylyl cyclase (sGC) inhibitor (ODQ; 10 μM) nearly abolished the vasorelaxation. The cGMP-dependent protein kinase (PKG) inhibition (KT5823; 1 μM) attenuated the NONO2P relaxant effect. The vasorelaxant response was significantly attenuated by blocking inward rectifying K+ channels (Kir), voltage-operated K+ channels (KV), and large conductance Ca2+-activated K+ channels (BKCa). NONO2P-induced relaxation was attenuated by cyclopiazonic acid (10 μM), indicating that sarcoplasmic reticulum Ca2+-ATPase (SERCA) activation is involved in this relaxation. Moreover, NONO2P increased NO levels in endothelial cells and cGMP production. CONCLUSIONS NONO2P induces vasorelaxation with the same magnitude as SNP, releasing NO• and NO-. Its vasorelaxant effect involves sGC, PKG, K+ channels opening, and SERCA activation, suggesting its potential as a therapeutic option for CVD.
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Affiliation(s)
- Raiana A Moraes
- Laboratory of Cardiovascular Physiology and Pharmacology, Bioregulation Department, Federal University of Bahia, UFBA, Salvador, Bahia, Brazil; Gonçalo Moniz Institute, FIOCRUZ, Salvador, BA, Brazil
| | - Daniele S Brito
- Laboratory of Cardiovascular Physiology and Pharmacology, Bioregulation Department, Federal University of Bahia, UFBA, Salvador, Bahia, Brazil; Gonçalo Moniz Institute, FIOCRUZ, Salvador, BA, Brazil
| | - Fênix A Araujo
- Laboratory of Cardiovascular Physiology and Pharmacology, Bioregulation Department, Federal University of Bahia, UFBA, Salvador, Bahia, Brazil; Gonçalo Moniz Institute, FIOCRUZ, Salvador, BA, Brazil
| | - Rafael L C Jesus
- Laboratory of Cardiovascular Physiology and Pharmacology, Bioregulation Department, Federal University of Bahia, UFBA, Salvador, Bahia, Brazil
| | - Liliane B Silva
- Laboratory of Cardiovascular Physiology and Pharmacology, Bioregulation Department, Federal University of Bahia, UFBA, Salvador, Bahia, Brazil
| | - Denise S Sá
- Federal Institute of Bahia, IFBA, Salvador, BA, Brazil
| | | | - Laena Pernomian
- Department of Cell Biology and Anatomy, University of South Carolina, Columbia, SC, USA; Cardiovascular Translational Research Center, University of South Carolina, Columbia, SC, USA
| | - Camilla F Wenceslau
- Department of Cell Biology and Anatomy, University of South Carolina, Columbia, SC, USA; Cardiovascular Translational Research Center, University of South Carolina, Columbia, SC, USA
| | - Fernanda Priviero
- Department of Cell Biology and Anatomy, University of South Carolina, Columbia, SC, USA; Cardiovascular Translational Research Center, University of South Carolina, Columbia, SC, USA
| | - R Clinton Webb
- Department of Cell Biology and Anatomy, University of South Carolina, Columbia, SC, USA; Cardiovascular Translational Research Center, University of South Carolina, Columbia, SC, USA
| | - Darizy F Silva
- Laboratory of Cardiovascular Physiology and Pharmacology, Bioregulation Department, Federal University of Bahia, UFBA, Salvador, Bahia, Brazil; Gonçalo Moniz Institute, FIOCRUZ, Salvador, BA, Brazil.
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2
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Palmieri EM, Holewinski R, McGinity CL, Pierri CL, Maio N, Weiss JM, Tragni V, Miranda KM, Rouault TA, Andresson T, Wink DA, McVicar DW. Pyruvate dehydrogenase operates as an intramolecular nitroxyl generator during macrophage metabolic reprogramming. Nat Commun 2023; 14:5114. [PMID: 37607904 PMCID: PMC10444860 DOI: 10.1038/s41467-023-40738-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 08/04/2023] [Indexed: 08/24/2023] Open
Abstract
M1 macrophages enter a glycolytic state when endogenous nitric oxide (NO) reprograms mitochondrial metabolism by limiting aconitase 2 and pyruvate dehydrogenase (PDH) activity. Here, we provide evidence that NO targets the PDH complex by using lipoate to generate nitroxyl (HNO). PDH E2-associated lipoate is modified in NO-rich macrophages while the PDH E3 enzyme, also known as dihydrolipoamide dehydrogenase (DLD), is irreversibly inhibited. Mechanistically, we show that lipoate facilitates NO-mediated production of HNO, which interacts with thiols forming irreversible modifications including sulfinamide. In addition, we reveal a macrophage signature of proteins with reduction-resistant modifications, including in DLD, and identify potential HNO targets. Consistently, DLD enzyme is modified in an HNO-dependent manner at Cys477 and Cys484, and molecular modeling and mutagenesis show these modifications impair the formation of DLD homodimers. In conclusion, our work demonstrates that HNO is produced physiologically. Moreover, the production of HNO is dependent on the lipoate-rich PDH complex facilitating irreversible modifications that are critical to NO-dependent metabolic rewiring.
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Affiliation(s)
- Erika M Palmieri
- Cancer Innovation Laboratory, NCI-Frederick, Frederick, MD, 21702, USA
| | - Ronald Holewinski
- Protein Characterization Laboratory, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Inc., Frederick, MD, 21702, USA
| | | | - Ciro L Pierri
- Laboratory of Biochemistry, Molecular and Structural Biology, Department of Pharmacy-Pharmaceutical Sciences, University of Bari, Via E. Orabona, 4, Bari, 70125, Italy
| | - Nunziata Maio
- Molecular Medicine Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 9000 Rockville Pike, Bethesda, MD, 20892, USA
| | - Jonathan M Weiss
- Cancer Innovation Laboratory, NCI-Frederick, Frederick, MD, 21702, USA
| | - Vincenzo Tragni
- Laboratory of Biochemistry, Molecular and Structural Biology, Department of Pharmacy-Pharmaceutical Sciences, University of Bari, Via E. Orabona, 4, Bari, 70125, Italy
| | - Katrina M Miranda
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, AZ, 85721, USA
| | - Tracey A Rouault
- Molecular Medicine Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 9000 Rockville Pike, Bethesda, MD, 20892, USA
| | - Thorkell Andresson
- Protein Characterization Laboratory, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Inc., Frederick, MD, 21702, USA
| | - David A Wink
- Cancer Innovation Laboratory, NCI-Frederick, Frederick, MD, 21702, USA
| | - Daniel W McVicar
- Cancer Innovation Laboratory, NCI-Frederick, Frederick, MD, 21702, USA.
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3
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Sawase LR, C V J, Manna S, Chakrapani H. A modular scaffold for triggerable and tunable nitroxyl (HNO) generation with a fluorescence reporter. Chem Commun (Camb) 2023; 59:3415-3418. [PMID: 36852903 DOI: 10.1039/d2cc06134a] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Nitroxyl (HNO) is a short-lived mediator of cell signalling and can enhance the sulfane sulfur pool, a cellular antioxidant reservoir, by reacting with hydrogen sulfide (H2S). Here, we report esterase-activated HNO-generators that are suitable for tunable HNO release and the design of these donors allows for real-time monitoring of HNO release. These tools will help gain a better understanding of the cross-talk among short-lived gaseous signalling molecules that have emerged as major players in health and disease.
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Affiliation(s)
- Laxman R Sawase
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Pune 411 008, Maharashtra, India.
| | - Jishnu C V
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Pune 411 008, Maharashtra, India.
| | - Suman Manna
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Pune 411 008, Maharashtra, India.
| | - Harinath Chakrapani
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Pune 411 008, Maharashtra, India.
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4
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Kemp-Harper B. Vasoprotective Actions of Nitroxyl (HNO): A Story of Sibling Rivalry. J Cardiovasc Pharmacol 2021; 78:S13-S18. [PMID: 34840263 DOI: 10.1097/fjc.0000000000001151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 09/23/2021] [Indexed: 11/25/2022]
Abstract
ABSTRACT Nitroxyl (HNO), the 1 electron-reduced and protonated form of nitric oxide (NO•), has emerged as a nitrogen oxide with a suite of vasoprotective properties and therapeutic advantages over its redox sibling. Although HNO has garnered much attention due to its cardioprotective actions in heart failure, its ability to modulate vascular function, without the limitations of tolerance development and NO• resistance, is desirable in the treatment of vascular disease. HNO serves as a potent vasodilator and antiaggregatory agent and has an ability to limit vascular inflammation and reactive oxygen species generation. In addition, its resistance to scavenging by reactive oxygen species and ability to target distinct vascular signaling pathways (Kv, KATP, and calcitonin gene-related peptide) contribute to its preserved efficacy in hypertension, diabetes, and hypercholesterolemia. In this review, the vasoprotective actions of HNO will be compared with those of NO•, and the therapeutic utility of HNO donors in the treatment of angina, acute cardiovascular emergencies, and chronic vascular disease are discussed.
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Affiliation(s)
- Barbara Kemp-Harper
- Department of Pharmacology, Cardiovascular Disease Program, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
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5
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Matthies M, Rosenstand K, Nissen I, Muitjens S, Riber LP, De Mey JGR, Bloksgaard M. Nitric oxide (NO) synthase but not NO, HNO or H 2 O 2 mediates endothelium-dependent relaxation of resistance arteries from patients with cardiovascular disease. Br J Pharmacol 2021; 179:1049-1064. [PMID: 34664280 DOI: 10.1111/bph.15712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 09/10/2021] [Accepted: 09/12/2021] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND AND PURPOSE Superoxide anions can reduce the bioavailability and actions of endothelium-derived NO. In human resistance-sized arteries, endothelium-dependent vasodilatation can be mediated by H2 O2 instead of NO. Here, we tested the hypothesis that in resistance arteries from patients with cardiovascular disease, endothelium-dependent vasodilatation is mediated by a reactive oxygen species and not impaired by oxidative stress. EXPERIMENTAL APPROACH Small arteries were isolated from biopsies of the parietal pericardium of patients undergoing elective cardiothoracic surgery and were studied using immunohistochemical and organ chamber techniques. KEY RESULTS NO synthases 1, 2 and 3, superoxide dismutase 1 and catalase proteins were observed in the microvascular wall. Relaxing responses to bradykinin were endothelium dependent. During submaximal depolarization-induced contraction, bradykinin-mediated relaxations were inhibited by inhibitors of NO synthases (NOS) and soluble guanylyl cyclase (sGC) but not by scavengers of NO or HNO, inhibitors of cyclooxygenases, neuronal NO synthase, superoxide dismutase or catalase, or by exogenous catalase. During contraction stimulated by endothelin-1, these relaxations were not reduced by any of these interventions except DETCA, which caused a small reduction. CONCLUSION AND IMPLICATIONS In resistance arteries from patients with cardiovascular disease, endothelium-dependent relaxations seem not to be mediated by NO, HNO or H2 O2 , although NOS and sGC can be involved. These vasodilator responses continue during excessive oxidative stress.
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Affiliation(s)
- Maximilian Matthies
- Department of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | | | - Inger Nissen
- Department of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Stan Muitjens
- Department of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Lars P Riber
- Department of Cardiac, Thoracic and Vascular Surgery, Odense University Hospital, Odense, Denmark
| | - Jo G R De Mey
- Department of Molecular Medicine, University of Southern Denmark, Odense, Denmark.,Department of Pharmacology and Personalized Medicine, Maastricht University, Maastricht, The Netherlands
| | - Maria Bloksgaard
- Department of Molecular Medicine, University of Southern Denmark, Odense, Denmark
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6
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de Moraes LHO, Terroni B, da Silva Mayer NF, Rodrigues GJ. Multidrug-resistant protein inhibitor and phosphodiesterase inhibitor potentiate the vasodilator effect induced by photobiomodulation in isolated aortic rings. Lasers Med Sci 2021; 37:1209-1216. [PMID: 34313892 DOI: 10.1007/s10103-021-03374-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 07/08/2021] [Indexed: 12/01/2022]
Abstract
A previous work indicates that the red LASER (660 nm) induces vascular relaxation by nitric oxide (NO)-dependent mechanism. NO activates soluble guanylate cyclase (sGC) which produces cGMP, the main effector in the vasodilation pathway. An interesting pharmacological strategy is to control the levels of intracellular cGMP, preventing its efflux (with multidrug-resistant protein blockers, such as MK-571), or preventing its degradation (such as sildenafil, which inhibits the enzyme responsible for cGMP degradation, the phosphodiesterase-5 PDE5). This study aimed to look for pharmacological strategies to improve vasodilation LASER effect in normotensive and hypertensive rats (L-NAME model). The vascular reactivity study was performed in isolated aortic rings from normotensive and hypertensive rats, with a single LASER application and sodium nitroprusside (SNP) treatment. In aortic rings from normotensive rats, MK-571 and sildenafil potentiated the relaxation induced by LASER, compared to control. The vasodilation induced by SNP was potentiated by MK-571 and sildenafil, compared to control. In aortic rings from hypertensive rats, vasodilation effect induced by LASER and by SNP was potentiated just by MK-571, compared to control, with no potentiation by sildenafil. In addition, it was seen that the withdrawal of nitric oxide stocks carried out by L-cysteine is capable of being reversed with the use of the SNP. The results support the evidence that the vasodilation induced by red LASER is potentiated by MK-571 and sildenafil in aortic rings from normotensive rats. However, in aortic rings from L-NAME hypertensive rats, the potentiation in vasodilation was induced just by MK-571.
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Affiliation(s)
| | - Barbara Terroni
- Departamento de Ciências Farmacêuticas, Universidade Estadual Paulista "Julio de Mesquita Filho", Araraquara, São Paulo, Brazil
| | | | - Gerson Jhonatan Rodrigues
- Departamento de Ciências Fisiológicas, Universidade Federal de São Carlos (UFSCar), São Carlos, São Paulo, Brazil
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Hashimoto D, Hirashima T, Yamamura H, Kataoka T, Fujimoto K, Hyuga T, Yoshiki A, Kimura K, Kuroki S, Tachibana M, Suzuki K, Yamamoto N, Morioka S, Sasaki T, Yamada G. Dynamic erectile responses of a novel penile organ model utilizing TPEM†. Biol Reprod 2021; 104:875-886. [PMID: 33511393 DOI: 10.1093/biolre/ioab011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Male penis is required to become erect during copulation. In the upper (dorsal) part of penis, the erectile tissue termed corpus cavernosum (CC) plays fundamental roles for erection by regulating the inner blood flow. When blood flows into the CC, the microvascular complex termed sinusoidal space is reported to expand during erection. A novel in vitro explant system to analyze the dynamic erectile responses during contraction/relaxation is established. The current data show regulatory contraction/relaxation processes induced by phenylephrine (PE) and nitric oxide (NO) donor mimicking dynamic erectile responses by in vitro CC explants. Two-photon excitation microscopy (TPEM) observation shows the synchronous movement of sinusoidal space and the entire CC. By taking advantages of the CC explant system, tadalafil (Cialis) was shown to increase sinusoidal relaxation. Histopathological changes have been generally reported associating with erection in several pathological conditions. Various stressed statuses have been suggested to occur in the erectile responses by previous studies. The current CC explant model enables to analyze such conditions through directly manipulating CC in the repeated contraction/relaxation processes. Expression of oxidative stress marker and contraction-related genes, Hypoxia-inducible factor 1-alpha (Hif1a), glutathione peroxidase 1 (Gpx1), Ras homolog family member A (RhoA), and Rho-associated protein kinase (Rock), was significantly increased in such repeated contraction/relaxation. Altogether, it is suggested that the system is valuable for analyzing structural changes and physiological responses to several regulators in the field of penile medicine.
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Affiliation(s)
- Daiki Hashimoto
- Department of Developmental Genetics, Institute of Advanced Medicine, Wakayama Medical University (WMU), Wakayama, Japan
| | - Tsuyoshi Hirashima
- Department of Pathology and Biology of Diseases, Graduate School of Medicine, Kyoto University, Sakyo-ku, Kyoto, Japan
| | - Hisao Yamamura
- Department of Molecular and Cellular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Tomoya Kataoka
- Department of Clinical Pharmaceutics, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Kota Fujimoto
- Department of Developmental Genetics, Institute of Advanced Medicine, Wakayama Medical University (WMU), Wakayama, Japan
| | - Taiju Hyuga
- Department of Developmental Genetics, Institute of Advanced Medicine, Wakayama Medical University (WMU), Wakayama, Japan
| | - Atsushi Yoshiki
- Experimental Animal Division, RIKEN BioResource Research Center, Tsukuba, Ibaraki, Japan
| | - Kazunori Kimura
- Department of Clinical Pharmaceutics, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan.,Department of Hospital Pharmacy, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Shunsuke Kuroki
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
| | - Makoto Tachibana
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
| | - Kentaro Suzuki
- Department of Developmental Genetics, Institute of Advanced Medicine, Wakayama Medical University (WMU), Wakayama, Japan
| | - Nobuhiko Yamamoto
- Cellular and Molecular Neurobiology Group, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
| | - Shin Morioka
- Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takehiko Sasaki
- Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Gen Yamada
- Department of Developmental Genetics, Institute of Advanced Medicine, Wakayama Medical University (WMU), Wakayama, Japan
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8
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Li JC, Velagic A, Qin CX, Li M, Leo CH, Kemp-Harper BK, Ritchie RH, Woodman OL. Diabetes Attenuates the Contribution of Endogenous Nitric Oxide but Not Nitroxyl to Endothelium Dependent Relaxation of Rat Carotid Arteries. Front Pharmacol 2021; 11:585740. [PMID: 33716721 PMCID: PMC7944142 DOI: 10.3389/fphar.2020.585740] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 12/16/2020] [Indexed: 12/27/2022] Open
Abstract
Endothelial dysfunction is a major risk factor for several of the vascular complications of diabetes, including ischemic stroke. Nitroxyl (HNO), the one electron reduced and protonated form of nitric oxide (NO•), is resistant to scavenging by superoxide, but the role of HNO in diabetes mellitus associated endothelial dysfunction in the carotid artery remains unknown. Aim: To assess how diabetes affects the role of endogenous NO• and HNO in endothelium-dependent relaxation in rat isolated carotid arteries. Methods: Male Sprague Dawley rats were fed a high-fat-diet (HFD) for 2 weeks prior to administration of low dose streptozotocin (STZ; 35 mg/kg i. p./day) for 2 days. The HFD was continued for a further 12 weeks. Sham rats were fed standard chow and administered with citrate vehicle. After 14 weeks total, rats were anesthetized and carotid arteries collected to assess responses to the endothelium-dependent vasodilator, acetylcholine (ACh) by myography. The combination of calcium-activated potassium channel blockers, TRAM-34 (1 μmol/L) and apamin (1 μmol/L) was used to assess the contribution of endothelium-dependent hyperpolarization to relaxation. The corresponding contribution of NOS-derived nitrogen oxide species to relaxation was assessed using the combination of the NO• synthase inhibitor, L-NAME (200 μmol/L) and the soluble guanylate cyclase inhibitor ODQ (10 μmol/L). Lastly, L-cysteine (3 mmol/L), a selective HNO scavenger, and hydroxocobalamin (HXC; 100 μmol/L), a NO• scavenger, were used to distinguish between NO• and HNO-mediated relaxation. Results: At study end, diabetic rats exhibited significantly retarded body weight gain and elevated blood glucose levels compared to sham rats. The sensitivity and the maximal relaxation response to ACh was significantly impaired in carotid arteries from diabetic rats, indicating endothelial dysfunction. The vasorelaxation evoked by ACh was abolished by L-NAME plus ODQ, but not affected by the apamin plus TRAM-34 combination, indicating that NOS-derived nitrogen oxide species are the predominant endothelium-derived vasodilators in sham and diabetic rat carotid arteries. The maximum relaxation to ACh was significantly decreased by L-cysteine in both sham and diabetic rats, whereas HXC attenuated ACh-induced relaxation only in sham rats, suggesting that diabetes impaired the contribution of NO•, whereas HNO-mediated vasorelaxation remained intact. Conclusion: Both NO• and HNO contribute to endothelium-dependent relaxation in carotid arteries. In diabetes, NO•-mediated relaxation is impaired, whereas HNO-mediated relaxation was preserved. The potential for preserved HNO activity under pathological conditions that are associated with oxidative stress indicates that HNO donors may represent a viable therapeutic approach to the treatment of vascular dysfunction.
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Affiliation(s)
- Jasmin Chendi Li
- Drug, Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
- Baker Heart & Diabetes Institute, Melbourne, VIC, Australia
- Department of Pharmacology, University of Melbourne, Parkville, VIC, Australia
| | - Anida Velagic
- Drug, Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
- Baker Heart & Diabetes Institute, Melbourne, VIC, Australia
| | - Cheng Xue Qin
- Drug, Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
- Baker Heart & Diabetes Institute, Melbourne, VIC, Australia
- Department of Pharmacology, University of Melbourne, Parkville, VIC, Australia
| | - Mandy Li
- Drug, Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
- Department of Pharmacology, Cardiovascular Disease Program, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Chen Huei Leo
- Science, Maths and Technology Cluster, Singapore University of Technology & Design, Singapore, Singapore
| | - Barbara K. Kemp-Harper
- Department of Pharmacology, Cardiovascular Disease Program, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Rebecca H. Ritchie
- Drug, Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
- Baker Heart & Diabetes Institute, Melbourne, VIC, Australia
- Department of Pharmacology, University of Melbourne, Parkville, VIC, Australia
- Department of Pharmacology, Cardiovascular Disease Program, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Owen L. Woodman
- Drug, Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
- Baker Heart & Diabetes Institute, Melbourne, VIC, Australia
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Meng J, Zhang W, Wang C, Xiong S, Wang Q, Li H, Liu G, Hao Z. The dipeptidyl peptidase (DPP)-4 inhibitor trelagliptin inhibits IL-1β-induced endothelial inflammation and monocytes attachment. Int Immunopharmacol 2020; 89:106996. [DOI: 10.1016/j.intimp.2020.106996] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 09/08/2020] [Accepted: 09/08/2020] [Indexed: 12/27/2022]
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10
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Sun HJ, Wu ZY, Cao L, Zhu MY, Nie XW, Huang DJ, Sun MT, Bian JS. Role of nitroxyl (HNO) in cardiovascular system: From biochemistry to pharmacology. Pharmacol Res 2020; 159:104961. [DOI: 10.1016/j.phrs.2020.104961] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/16/2020] [Accepted: 05/24/2020] [Indexed: 12/12/2022]
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11
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Poletaeva DA, Faingold II, Soldatova YV, Smolina AV, Fedorov BS, Eremeev AB, Kotelnikova RA. Membranotropic and Antiradical Properties of 2-Nitroxysuccinate 3-Hydroxy-6-Methyl-2-Ethylpyridine. Bull Exp Biol Med 2019; 167:744-746. [PMID: 31655995 DOI: 10.1007/s10517-019-04613-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Indexed: 11/25/2022]
Abstract
We studied membranotropic properties of NO donor 2-nitroxysuccinate 3-hydroxy-6-methyl-2-ethylpyridine and its structural analog succinate 3-hydroxy-6-methyl-2-ethylpyridine (Mexidol). It was shown that the compounds under study are incorporated into modeled membranes and form long-living complexes with pyrene in the region of fatty acid tails of phospholipids. Luminol-amplified chemiluminescence analysis showed that both compounds exhibited antiradical activity and in a concentration of 0.1 mM reduced chemiluminescence intensity by more than 70%. 2-Nitroxysuccinate 3-hydroxy-6-methyl-2-ethylpyridine inhibited catalytic activity of monoamine oxidase A more efficiently than its structural analogue Mexidol.
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Affiliation(s)
- D A Poletaeva
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia.
| | - I I Faingold
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia.,Scientific Educational Center, Moscow Regional State University, Chernogolovka, Russia
| | - Yu V Soldatova
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia.,Scientific Educational Center, Moscow Regional State University, Chernogolovka, Russia
| | - A V Smolina
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia
| | - B S Fedorov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia
| | - A B Eremeev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia
| | - R A Kotelnikova
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia
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12
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Araújo AV, Andrade FA, Paulo M, de Paula TD, Potje SR, Pereira AC, Bendhack LM. NO donors induce vascular relaxation by different cellular mechanisms in hypertensive and normotensive rats. Nitric Oxide 2019; 86:12-20. [DOI: 10.1016/j.niox.2019.02.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 02/01/2019] [Accepted: 02/13/2019] [Indexed: 12/25/2022]
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13
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Endothelium-independent vasodilator effects of nobiletin in rat aorta. J Pharmacol Sci 2019; 140:48-53. [PMID: 31088764 DOI: 10.1016/j.jphs.2019.04.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 03/26/2019] [Accepted: 04/10/2019] [Indexed: 12/31/2022] Open
Abstract
Nobiletin is a one of the polymethoxyflavones contained in the peel of citrus fruits, such as Citrus depressa. In this study, the effect of nobiletin-induced relaxation on phenylephrine (PE)-induced contraction of endothelium-denuded rat aorta was investigated. Nobiletin inhibited PE- or KCl-induced contractions in a concentration-dependent manner in endothelium-intact and -denuded aortas. However, this relaxation was stronger in PE-induced contractions than in KCl-induced contractions; moreover, the nobiletin-induced relaxation was significantly increased on PE-induced contraction in endothelium-intact aorta. ODQ significantly inhibited the nobiletin-induced relaxation in endothelium-denuded aorta; however, SQ22536 did not affect the relaxation. In addition, IBMX synergistically enhanced the nobiletin-induced relaxation. Nobiletin increased cGMP levels in aorta. Also, IBMX significantly increased cGMP content in aorta, and ODQ significantly reduced cGMP levels. Nobiletin-induced relaxation was significantly inhibited by the Ca2+-activated K+ (BK) channel inhibitor iberiotoxin (IbTX) and the ATP-sensitive K+ (KATP) channel inhibitor glybenclamide. Sodium nitroprusside-induced relaxation was suppressed by IbTX, but not by glybenclamide. These results suggest that nobiletin inhibits PE-induced contractions of endothelium-denuded rat aorta by increasing cGMP levels via GC activation. Moreover, the present findings indicate the possibility that nobiletin opened BK channels by a cGMP-related signal, but KATP channels were opened by a cGMP-nonrelated signal in rat aorta.
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14
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Nitric Oxide Reverses the Position of the Heart during Embryonic Development. Int J Mol Sci 2019; 20:ijms20051157. [PMID: 30866404 PMCID: PMC6429056 DOI: 10.3390/ijms20051157] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 02/14/2019] [Accepted: 02/18/2019] [Indexed: 02/07/2023] Open
Abstract
Nitric oxide (NO) produced by endothelial nitric oxide synthase (eNOS) plays crucial roles in cardiac homeostasis. Adult cardiomyocyte specific overexpression of eNOS confers protection against myocardial-reperfusion injury. However, the global effects of NO overexpression in developing cardiovascular system is still unclear. We hypothesized that nitric oxide overexpression affects the early migration of cardiac progenitor cells, vasculogenesis and function in a chick embryo. Vehicle or nitric oxide donor DEAN (500 mM) were loaded exogenously through a small window on the broad side of freshly laid egg and embryonic development tracked by live video-microscopy. At Hamburg Hamilton (HH) stage 8, the cardiac progenitor cells (CPC) were isolated and cell migration analysed by Boyden Chamber. The vascular bed structure and heart beats were compared between vehicle and DEAN treated embryos. Finally, expression of developmental markers such as BMP4, Shh, Pitx2, Noggin were measured using reverse transcriptase PCR and in-situ hybridization. The results unexpectedly showed that exogenous addition of pharmacological NO between HH stage 7⁻8 resulted in embryos with situs inversus in 28 out of 100 embryos tested. Embryos treated with NO inhibitor cPTIO did not have situs inversus, however 10 embryos treated with L-arginine showed a situs inversus phenotype. N-acetyl cysteine addition in the presence of NO failed to rescue situs inversus phenotype. The heart beat is normal (120 beats/min) although the vascular bed pattern is altered. Migration of CPCs in DEAN treated embryos is reduced by 60% compared to vehicle. BMP4 protein expression increases on the left side of the embryo compared to vehicle control. The data suggests that the NO levels in the yolk are important in turning of the heart during embryonic development. High levels of NO may lead to situs inversus condition in avian embryo by impairing cardiac progenitor cell migration through the NO-BMP4-cGMP axis.
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15
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Nóbrega N, Araújo NF, Reis D, Facine LM, Miranda CAS, Mota GC, Aires RD, Capettini LDSA, Cruz JDS, Bonaventura D. Hydrogen peroxide and nitric oxide induce anticontractile effect of perivascular adipose tissue via renin angiotensin system activation. Nitric Oxide 2019; 84:50-59. [PMID: 30611765 DOI: 10.1016/j.niox.2018.12.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 11/23/2018] [Accepted: 12/31/2018] [Indexed: 01/31/2023]
Abstract
The perivascular adipose tissue (PVAT) is located around the adventitia, composed primarily by adipocytes, stromal cells, leukocytes, fibroblasts and capillaries. It is well described that PVAT is an important modulator of the vascular tone being considered a biologically active tissue, releasing both vasoconstrictor and vasodilators factors. The literature shows that the anti-contractile effect induced by PVAT may be due to activation of the renin-angiotensin system (RAS). AIM Investigate whether the renin-angiotensin system participates in the effect exerted by perivascular adipose tissue on the vascular tone. METHODS AND RESULTS For this study we used thoracic aorta from Balb/c mice and performed vascular reactivity, nitric oxide and hydrogen peroxide quantification using selective probes and fluorescence microscopy, immunofluorescence to locate receptors and enzymes involved in this response. Our results demonstrated that perivascular adipose tissue induces an anti-contractile effect in endothelium-independent manner and involves Mas and AT2 receptors participation with subsequent PI3K/Akt pathway activation. This pathway culminated with nitric oxide and hydrogen peroxide production by neuronal nitric oxide synthase, being hydrogen peroxide most relevant for the anti-contractile effect of perivascular adipose tissue. CONCLUSION For the first time in the literature, our results show the presence of Mas and AT2 receptors, as well as, nitric oxide synthase on perivascular adipose tissue. Furthermore, our results show the involvement of Mas and AT2 receptors and consequently nitric oxide synthase activation in the anti-contractile effect exerted by perivascular adipose tissue.
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Affiliation(s)
- Natália Nóbrega
- Laboratory of Vascular Pharmacology, Department of Pharmacology, Institute of Biological Science, Federal University of Minas Gerais, Brazil
| | - Natália Ferreira Araújo
- Laboratory of Vascular Pharmacology, Department of Pharmacology, Institute of Biological Science, Federal University of Minas Gerais, Brazil
| | - Daniela Reis
- Laboratory of Vascular Pharmacology, Department of Pharmacology, Institute of Biological Science, Federal University of Minas Gerais, Brazil
| | - Larissa Moreira Facine
- Laboratory of Vascular Pharmacology, Department of Pharmacology, Institute of Biological Science, Federal University of Minas Gerais, Brazil
| | - Claudiane Aparecida S Miranda
- Laboratory of Vascular Pharmacology, Department of Pharmacology, Institute of Biological Science, Federal University of Minas Gerais, Brazil
| | - Gianne Campos Mota
- Laboratory of Vascular Biology, Department of Pharmacology, Institute of Biological Science, Federal University of Minas Gerais, Brazil
| | - Rosária Dias Aires
- Laboratory of Excitatory Membranes, Department of Biochemistry and Immunology, Institute of Biological Science, Federal University of Minas Gerais, Brazil
| | | | - Jader Dos Santos Cruz
- Laboratory of Excitatory Membranes, Department of Biochemistry and Immunology, Institute of Biological Science, Federal University of Minas Gerais, Brazil
| | - Daniella Bonaventura
- Laboratory of Vascular Pharmacology, Department of Pharmacology, Institute of Biological Science, Federal University of Minas Gerais, Brazil.
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16
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Fukuto JM. A recent history of nitroxyl chemistry, pharmacology and therapeutic potential. Br J Pharmacol 2019; 176:135-146. [PMID: 29859009 PMCID: PMC6295406 DOI: 10.1111/bph.14384] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 05/23/2018] [Indexed: 12/11/2022] Open
Abstract
Due to the excitement surrounding the discovery of NO as an endogenously generated signalling molecule, a number of other nitrogen oxides were also investigated as possible physiological mediators. Among these was nitroxyl (HNO). Over the past 25 years or so, a significant amount of work by this laboratory and many others has disclosed that HNO possesses unique chemical properties and important pharmacological utility. Indeed, the pharmacological potential for HNO as a treatment for heart failure, among other uses, has garnered this curious molecule a considerable amount of recent attention. This review summarizes the events that led to this recent attention as well as poses important questions that are still to be answered with regards to understanding the chemistry and biology of HNO. LINKED ARTICLES: This article is part of a themed section on Nitric Oxide 20 Years from the 1998 Nobel Prize. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v176.2/issuetoc.
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Affiliation(s)
- Jon M Fukuto
- Department of ChemistrySonoma State UniversityRohnert ParkCAUSA
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17
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Perivascular Adipose Tissue-Enhanced Vasodilation in Metabolic Syndrome Rats by Apelin and N-Acetyl⁻l-Cysteine-Sensitive Factor(s). Int J Mol Sci 2018; 20:ijms20010106. [PMID: 30597883 PMCID: PMC6337496 DOI: 10.3390/ijms20010106] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 12/24/2018] [Accepted: 12/24/2018] [Indexed: 01/24/2023] Open
Abstract
Perivascular adipose tissue (PVAT) can regulate vascular tone. In mesenteric arteries of SHRSP.Z-Leprfa/IzmDmcr rats (SHRSP.ZF) with metabolic syndrome, vascular dysfunction is compensated by PVAT-dependent mechanisms that disappear with increasing age. In this study, we investigated the mechanisms of the age-related changes and responsible factor(s) involved in the enhancing effects of mesenteric arterial PVAT in SHRSP.ZF. Acetylcholine- and sodium nitroprusside-induced relaxations of isolated arteries were greater with PVAT than without PVAT at 17 and 20 weeks of age (wks), and as expected, this enhancement by the presence of PVAT disappeared at 23 wks. PVAT mRNA levels of angiotensin II type 1 (AT1) receptor-associated protein was less and AT1 receptor was unchanged at 23 wks when compared to 20 wks. At 20 wks, the enhanced acetylcholine-induced relaxation by the presence of PVAT was inhibited by N-acetyl-l-cysteine (NAC). Acetylcholine-induced relaxation of arteries without PVAT was increased in the presence of exogenously added apelin. PVAT mRNA level of apelin was higher in SHRSP.ZF than in control Wistar-Kyoto rats, and the level was decreased with aging. These results suggest that AT1 receptor activation in PVAT, and changes in the regulation of apelin and a NAC-sensitive factor are related to the age-dependent deterioration of the vasodilation enhancing effects of mesenteric arterial PVAT in SHRSP.ZF.
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18
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Ramadass SK, Nazir LS, Thangam R, Perumal RK, Manjubala I, Madhan B, Seetharaman S. Type I collagen peptides and nitric oxide releasing electrospun silk fibroin scaffold: A multifunctional approach for the treatment of ischemic chronic wounds. Colloids Surf B Biointerfaces 2018; 175:636-643. [PMID: 30583219 DOI: 10.1016/j.colsurfb.2018.12.025] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 12/10/2018] [Accepted: 12/11/2018] [Indexed: 12/19/2022]
Abstract
Biomimetic nanofibrous scaffolds targeting multiple dysfunctional processes provide a multi-pronged strategy to restore functions and regenerate the damaged tissue. This study investigates a strategy of combining a regenerative component, Type I collagen Peptide (CP), along with a nitric oxide donor, S-Nitrosoglutathione (GSNO), in the form of nanofibrous scaffold to address the non-healing diabetic ulcer. Silk Fibroin-Polyvinyl alcohol (SF-PVA) nanofibrous scaffold is used as a carrier for delivering functional moieties. The developed nanofibrous electrospun mats (SF-PVA, CP-SF-PVA, and CP-GSNO-SF-PVA) showed continuous, bead-less and randomly oriented fibers with highly porous morphology. The in vitro biocompatibility was assessed by MTT assay, DAPI-Rhodamine 123 and FITC-Phalloidin imaging studies. CP-GSNO-SF-PVA nanofibrous scaffold showed a high degree of cell attachment, spreading of F-actin with viable cell morphology and appreciable inter-cellular connection. Thus the study showed that the proliferation of fibroblast cells are mainly facilitated by the presence of collagen peptide in the nanofibrous matrix. Griess assay demonstrated immediate release of NO for a day from the developed multifunctional scaffold. These results demonstrate the in vitro efficacy of CP-GSNO and indicate the opportunity of CP-GSNO-SF-PVA nanofibrous scaffold for the treatment of ischemic non-healing ulcers.
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Affiliation(s)
- Satiesh Kumar Ramadass
- Faculty of Pharmacy, Sri Ramachandra Medical Centre and Research Institute, Chennai, Tamil Nadu, India
| | - Lone Saquib Nazir
- Department of Biomedical Engineering, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Ramar Thangam
- CSIR - Central Leather Research Institute, Chennai, Tamil Nadu, India
| | | | - I Manjubala
- Department of Biomedical Engineering, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Balaraman Madhan
- CSIR - Central Leather Research Institute, Chennai, Tamil Nadu, India.
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19
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Ford TJ, Rocchiccioli P, Good R, McEntegart M, Eteiba H, Watkins S, Shaukat A, Lindsay M, Robertson K, Hood S, Yii E, Sidik N, Harvey A, Montezano AC, Beattie E, Haddow L, Oldroyd KG, Touyz RM, Berry C. Systemic microvascular dysfunction in microvascular and vasospastic angina. Eur Heart J 2018; 39:4086-4097. [PMID: 30165438 PMCID: PMC6284165 DOI: 10.1093/eurheartj/ehy529] [Citation(s) in RCA: 120] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 07/17/2018] [Accepted: 08/23/2018] [Indexed: 12/20/2022] Open
Abstract
Aims Coronary microvascular dysfunction and/or vasospasm are potential causes of ischaemia in patients with no obstructive coronary artery disease (INOCA). We tested the hypothesis that these patients also have functional abnormalities in peripheral small arteries. Methods and results Patients were prospectively enrolled and categorised as having microvascular angina (MVA), vasospastic angina (VSA) or normal control based on invasive coronary artery function tests incorporating probes of endothelial and endothelial-independent function (acetylcholine and adenosine). Gluteal biopsies of subcutaneous fat were performed in 81 subjects (62 years, 69% female, 59 MVA, 11 VSA, and 11 controls). Resistance arteries were dissected enabling study using wire myography. Maximum relaxation to ACh (endothelial function) was reduced in MVA vs. controls [median 77.6 vs. 98.7%; 95% confidence interval (CI) of difference 2.3-38%; P = 0.0047]. Endothelium-independent relaxation [sodium nitroprusside (SNP)] was similar between all groups. The maximum contractile response to endothelin-1 (ET-1) was greater in MVA (median 121%) vs. controls (100%; 95% CI of median difference 4.7-45%, P = 0.015). Response to the thromboxane agonist, U46619, was also greater in MVA (143%) vs. controls (109%; 95% CI of difference 13-57%, P = 0.003). Patients with VSA had similar abnormal patterns of peripheral vascular reactivity including reduced maximum relaxation to ACh (median 79.0% vs. 98.7%; P = 0.03) and increased response to constrictor agonists including ET-1 (median 125% vs. 100%; P = 0.02). In all groups, resistance arteries were ≈50-fold more sensitive to the constrictor effects of ET-1 compared with U46619. Conclusions Systemic microvascular abnormalities are common in patients with MVA and VSA. These mechanisms may involve ET-1 and were characterized by endothelial dysfunction and enhanced vasoconstriction. Clinical trial registration ClinicalTrials.gov registration is NCT03193294.
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Affiliation(s)
- Thomas J Ford
- West of Scotland Heart and Lung Centre, Golden Jubilee National Hospital, GJNH, Agamemnon St, Glasgow, UK
- British Heart Foundation Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, 126 University Place, University of Glasgow, Glasgow, UK
- Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia
| | - Paul Rocchiccioli
- West of Scotland Heart and Lung Centre, Golden Jubilee National Hospital, GJNH, Agamemnon St, Glasgow, UK
- British Heart Foundation Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, 126 University Place, University of Glasgow, Glasgow, UK
| | - Richard Good
- West of Scotland Heart and Lung Centre, Golden Jubilee National Hospital, GJNH, Agamemnon St, Glasgow, UK
| | - Margaret McEntegart
- West of Scotland Heart and Lung Centre, Golden Jubilee National Hospital, GJNH, Agamemnon St, Glasgow, UK
- British Heart Foundation Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, 126 University Place, University of Glasgow, Glasgow, UK
| | - Hany Eteiba
- West of Scotland Heart and Lung Centre, Golden Jubilee National Hospital, GJNH, Agamemnon St, Glasgow, UK
| | - Stuart Watkins
- West of Scotland Heart and Lung Centre, Golden Jubilee National Hospital, GJNH, Agamemnon St, Glasgow, UK
| | - Aadil Shaukat
- West of Scotland Heart and Lung Centre, Golden Jubilee National Hospital, GJNH, Agamemnon St, Glasgow, UK
| | - Mitchell Lindsay
- West of Scotland Heart and Lung Centre, Golden Jubilee National Hospital, GJNH, Agamemnon St, Glasgow, UK
| | - Keith Robertson
- West of Scotland Heart and Lung Centre, Golden Jubilee National Hospital, GJNH, Agamemnon St, Glasgow, UK
| | - Stuart Hood
- West of Scotland Heart and Lung Centre, Golden Jubilee National Hospital, GJNH, Agamemnon St, Glasgow, UK
| | - Eric Yii
- British Heart Foundation Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, 126 University Place, University of Glasgow, Glasgow, UK
| | - Novalia Sidik
- British Heart Foundation Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, 126 University Place, University of Glasgow, Glasgow, UK
| | - Adam Harvey
- British Heart Foundation Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, 126 University Place, University of Glasgow, Glasgow, UK
| | - Augusto C Montezano
- British Heart Foundation Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, 126 University Place, University of Glasgow, Glasgow, UK
| | - Elisabeth Beattie
- British Heart Foundation Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, 126 University Place, University of Glasgow, Glasgow, UK
| | - Laura Haddow
- British Heart Foundation Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, 126 University Place, University of Glasgow, Glasgow, UK
| | - Keith G Oldroyd
- West of Scotland Heart and Lung Centre, Golden Jubilee National Hospital, GJNH, Agamemnon St, Glasgow, UK
| | - Rhian M Touyz
- British Heart Foundation Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, 126 University Place, University of Glasgow, Glasgow, UK
| | - Colin Berry
- West of Scotland Heart and Lung Centre, Golden Jubilee National Hospital, GJNH, Agamemnon St, Glasgow, UK
- British Heart Foundation Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, 126 University Place, University of Glasgow, Glasgow, UK
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20
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Palanisamy S, Wang YL, Chen YJ, Chen CY, Tsai FT, Liaw WF, Wang YM. In Vitro and in Vivo Imaging of Nitroxyl with Copper Fluorescent Probe in Living Cells and Zebrafish. Molecules 2018; 23:molecules23102551. [PMID: 30301224 PMCID: PMC6222915 DOI: 10.3390/molecules23102551] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/03/2018] [Accepted: 10/03/2018] [Indexed: 01/16/2023] Open
Abstract
Nitroxyl (HNO) plays a critical role in many physiological processes which includes vasorelaxation in heart failure, neuroregulation, and myocardial contractility. Powerful imaging tools are required to obtain information for understanding the mechanisms involved in these in vivo processes. In order to develop a rapid and high sensitive probe for HNO detection in living cells and the zebrafish model organism, 2-((2-(benzothiazole-2yl)benzylidene) amino)benzoic acid (AbTCA) as a ligand, and its corresponding copper(II) complex Cu(II)-AbTCA were synthesized. The reaction results of Cu(II)-AbTCA with Angeli's salt showed that Cu(II)-AbTCA could detect HNO quantitatively in a range of 40⁻360 µM with a detection limit of 9.05 µM. Furthermore, Cu(II)-AbTCA is more selective towards HNO over other biological species including thiols, reactive nitrogen, and reactive oxygen species. Importantly, Cu(II)-AbTCA was successfully applied to detect HNO in living cells and zebrafish. The collective data reveals that Cu(II)-AbTCA could be used as a potential probe for HNO detection in living systems.
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Affiliation(s)
- Sathyadevi Palanisamy
- Department of Biological Science and Technology, Institute of Molecular Medicine and Bioengineering, Center For Intelligent Drug Systems and Smart Bio-devices (IDS2B), National Chiao Tung University, 75 Bo-Ai Street, Hsinchu 300, Taiwan.
| | - Yu-Liang Wang
- Department of Biological Science and Technology, Institute of Molecular Medicine and Bioengineering, Center For Intelligent Drug Systems and Smart Bio-devices (IDS2B), National Chiao Tung University, 75 Bo-Ai Street, Hsinchu 300, Taiwan.
| | - Yu-Jen Chen
- Department of Biological Science and Technology, Institute of Molecular Medicine and Bioengineering, Center For Intelligent Drug Systems and Smart Bio-devices (IDS2B), National Chiao Tung University, 75 Bo-Ai Street, Hsinchu 300, Taiwan.
| | - Chiao-Yun Chen
- Department of Radiology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Medical Imaging, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
| | - Fu-Te Tsai
- Department of Chemistry, National Tsing Hua University, Hsinchu 30043, Taiwan.
| | - Wen-Feng Liaw
- Department of Chemistry, National Tsing Hua University, Hsinchu 30043, Taiwan.
| | - Yun-Ming Wang
- Department of Biological Science and Technology, Institute of Molecular Medicine and Bioengineering, Center For Intelligent Drug Systems and Smart Bio-devices (IDS2B), National Chiao Tung University, 75 Bo-Ai Street, Hsinchu 300, Taiwan.
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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21
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Pinkney AMH, Lemmey HAL, Dora KA, Garland CJ. Vasorelaxation to the Nitroxyl Donor Isopropylamine NONOate in Resistance Arteries Does Not Require Perivascular Calcitonin Gene-Related Peptide. Hypertension 2017; 70:HYPERTENSIONAHA.117.09737. [PMID: 28760938 DOI: 10.1161/hypertensionaha.117.09737] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 05/28/2017] [Accepted: 07/05/2017] [Indexed: 01/12/2023]
Abstract
Nitroxyl (HNO) donors offer considerable therapeutic potential for the treatment of hypertension-related cardiovascular disorders, particularly heart failure, as they combine an inotropic action with peripheral vasodilation. Angeli's salt is the only HNO donor whose mechanism has been studied in depth, and recently, Angeli's salt vasodilation was suggested to be indirect and caused by calcitonin gene-related peptide (CGRP) released from perivascular nerves after HNO activates TRPA1 (transient receptor potential cation channel subfamily A member 1) channels. We investigated resistance artery vasorelaxation to the HNO donor, isopropylamine NONOate (IPA/NO), one of the structures providing a template for therapeutic development. Wire myography in combination with measurements of smooth muscle membrane potential was used to characterize the effect of IPA/NO in mesenteric resistance arteries. Immunohistochemistry was assessed in pressurized arteries. IPA/NO concentration dependently hyperpolarized and relaxed arteries precontracted with the α1-adrenoreceptor agonist, phenylephrine. These effects were blocked by the soluble guanylyl cyclase inhibitor, ODQ (1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one) but not by the KATP channel inhibitor, glibenclamide. Vasorelaxation persisted in the presence of raised [K+]o, used to block hyperpolarization, capsaicin to deplete perivascular CGRP, or HC030031 (2-(1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7H-purin-7-yl)-N-(4 isopropylphenyl) acetamide) to block TRPA1 receptors. Without preconstriction, hyperpolarization to IPA/NO was suppressed by glibenclamide, capsaicin, or HC030031. Hyperpolarization but not vasorelaxation to exogenous CGRP was inhibited with glibenclamide. Thus, vascular hyperpolarization is not necessary for vasorelaxation to the HNO donor IPA/NO, even though both effects are cGMP dependent. The reduced hyperpolarization after depletion of perivascular CGRP or block of TRPA1 receptors indicates some release of CGRP, but this does not contribute to HNO vasorelaxation. Therefore, HNO-TRPA1-CGRP signaling does not seem important for vasodilation to IPA/NO in resistance arteries.
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Affiliation(s)
- Alice M H Pinkney
- From the Department of Pharmacology, University of Oxford, United Kingdom
| | - Hamish A L Lemmey
- From the Department of Pharmacology, University of Oxford, United Kingdom
| | - Kim A Dora
- From the Department of Pharmacology, University of Oxford, United Kingdom
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22
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Tare M, Kalidindi RSR, Bubb KJ, Parkington HC, Boon WM, Li X, Sobey CG, Drummond GR, Ritchie RH, Kemp-Harper BK. Vasoactive actions of nitroxyl (HNO) are preserved in resistance arteries in diabetes. Naunyn Schmiedebergs Arch Pharmacol 2017; 390:397-408. [PMID: 28074232 DOI: 10.1007/s00210-016-1336-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2016] [Accepted: 12/27/2016] [Indexed: 10/20/2022]
Abstract
Endothelial dysfunction is a major risk factor for the vascular complications of diabetes. Increased reactive oxygen species (ROS) generation, a hallmark of diabetes, reduces the bioavailability of endothelial vasodilators, including nitric oxide (NO·). The vascular endothelium also produces the one electron reduced and protonated form of NO·, nitroxyl (HNO). Unlike NO·, HNO is resistant to scavenging by superoxide anions (·O2─). The fate of HNO in resistance arteries in diabetes is unknown. We tested the hypothesis that the vasodilator actions of endogenous and exogenous HNO are preserved in resistance arteries in diabetes. We investigated the actions of HNO in small arteries from the mesenteric and femoral beds as they exhibit marked differences in endothelial vasodilator function following 8 weeks of streptozotocin (STZ)-induced diabetes mellitus. Vascular reactivity was assessed using wire myography and ·O2─ generation using lucigenin-enhanced chemiluminescence. The HNO donor, Angeli's salt, and the NO· donor, DEA/NO, evoked relaxations in both arteries of control rats, and these responses were unaffected by diabetes. Nox2 oxidase expression and ·O2─ generation were upregulated in mesenteric, but unchanged, in femoral arteries of diabetic rats. Acetylcholine-induced endothelium-dependent relaxation was impaired in mesenteric but not femoral arteries in diabetes. The HNO scavenger, L-cysteine, reduced this endothelium-dependent relaxation to a similar extent in femoral and mesenteric arteries from control and diabetic animals. In conclusion, HNO and NO· contribute to the NO synthase (NOS)-sensitive component of endothelium-dependent relaxation in mesenteric and femoral arteries. The role of HNO is sustained in diabetes, serving to maintain endothelium-dependent relaxation.
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Affiliation(s)
- Marianne Tare
- Cardiovascular Disease Program, Biomedicine Discovery Institute, Department of Physiology, Monash University, Melbourne, VIC, 3800, Australia.,Monash Rural Health, Monash University, Churchill, VIC, Australia
| | - Rushita S R Kalidindi
- Cardiovascular Disease Program, Biomedicine Discovery Institute, Department of Pharmacology, Monash University, Melbourne, VIC, 3800, Australia
| | - Kristen J Bubb
- Cardiovascular Disease Program, Biomedicine Discovery Institute, Department of Physiology, Monash University, Melbourne, VIC, 3800, Australia.,Kolling Institute, Royal North Shore Hospital, St Leonards, NSW, Australia
| | - Helena C Parkington
- Cardiovascular Disease Program, Biomedicine Discovery Institute, Department of Physiology, Monash University, Melbourne, VIC, 3800, Australia
| | - Wee-Ming Boon
- Cardiovascular Disease Program, Biomedicine Discovery Institute, Department of Physiology, Monash University, Melbourne, VIC, 3800, Australia
| | - Xiang Li
- Cardiovascular Disease Program, Biomedicine Discovery Institute, Department of Physiology, Monash University, Melbourne, VIC, 3800, Australia
| | - Christopher G Sobey
- Cardiovascular Disease Program, Biomedicine Discovery Institute, Department of Pharmacology, Monash University, Melbourne, VIC, 3800, Australia
| | - Grant R Drummond
- Cardiovascular Disease Program, Biomedicine Discovery Institute, Department of Pharmacology, Monash University, Melbourne, VIC, 3800, Australia
| | - Rebecca H Ritchie
- Baker IDI Heart and Diabetes Institute, Melbourne, VIC, Australia.,Department of Medicine, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Barbara K Kemp-Harper
- Cardiovascular Disease Program, Biomedicine Discovery Institute, Department of Pharmacology, Monash University, Melbourne, VIC, 3800, Australia.
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Nitroxyl (HNO) reduces endothelial and monocyte activation and promotes M2 macrophage polarization. Clin Sci (Lond) 2016; 130:1629-40. [DOI: 10.1042/cs20160097] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 05/26/2016] [Indexed: 12/21/2022]
Abstract
In the present study, the effect of nitroxyl anion (HNO) donors on factors that precede atherosclerosis was examined. They reduced endothelial cell inflammation and monocyte activation and as such may be an effective treatment for coronary artery disease.
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Endothelial nitric oxide synthase gene G894T polymorphism and risk assessment for pregnancy-induced hypertension: evidence from 11 700 subjects. Hypertens Res 2016; 39:899-906. [PMID: 27465577 DOI: 10.1038/hr.2016.95] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 05/11/2016] [Accepted: 06/14/2016] [Indexed: 01/11/2023]
Abstract
Recent studies have reported the association between endothelial nitric oxide synthase (eNOS) gene G894T polymorphism and pregnancy-induced hypertension (PIH). However, the results have been inconsistent. We conducted a comprehensive meta-analysis to explore this association. A total of 36 case-control studies involving 4028 PIH cases and 7672 controls were ultimately included. In the overall analysis, no association was identified between eNOS gene G894T polymorphism and PIH risk in any of the genetic models. In the subgroup analysis, the results showed that T-allele carriers had a higher risk of PIH than those with the G allele in Asians (G vs. T: odds ratio (OR)=0.76, 95% confidence interval (CI)=0.63-0.91, P=0.002; GT+TT vs. GG: OR=1.32, 95% CI=1.09-1.59, P=0.004; TT vs. GT+GG: OR=1.96, 95% CI=1.26-3.06, P=0.003; TT vs. GG: OR=1.99, 95% CI=1.27-3.11, P=0.003; GT vs. GG: OR=1.23, 95% CI=1.05-1.43, P=0.009). For Latin American and African populations, the association between G894T polymorphism and susceptibility to PIH was only observed in the dominant model. However, no association was observed in Europeans and Americans. Therefore, eNOS gene G894T polymorphism was related to PIH risk, especially for Asians.
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Longhi-Balbinot DT, Rossaneis AC, Pinho-Ribeiro FA, Bertozzi MM, Cunha FQ, Alves-Filho JC, Cunha TM, Peron JPS, Miranda KM, Casagrande R, Verri WA. The nitroxyl donor, Angeli's salt, reduces chronic constriction injury-induced neuropathic pain. Chem Biol Interact 2016; 256:1-8. [PMID: 27287419 DOI: 10.1016/j.cbi.2016.06.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 05/27/2016] [Accepted: 06/06/2016] [Indexed: 12/31/2022]
Abstract
Chronic pain is a major health problem worldwide. We have recently demonstrated the analgesic effect of the nitroxyl donor, Angeli's salt (AS) in models of inflammatory pain. In the present study, the acute and chronic analgesic effects of AS was investigated in chronic constriction injury of the sciatic nerve (CCI)-induced neuropathic pain in mice. Acute (7th day after CCI) AS treatment (1 and 3 mg/kg; s.c.) reduced CCI-induced mechanical, but not thermal hyperalgesia. The acute analgesic effect of AS was prevented by treatment with 1H-[1,2, 4]oxadiazolo[4,3,-a]quinoxalin-1-one (ODQ, a soluble guanylate cyclase inhibitor), KT5823 (an inhibitor of protein kinase G [PKG]) or glibenclamide (GLB, an ATP-sensitive potassium channel blocker). Chronic (7-14 days after CCI) treatment with AS (3 mg/kg, s.c.) promoted a sustained reduction of CCI-induced mechanical and thermal hyperalgesia. Acute AS treatment reduced CCI-induced spinal cord allograft inflammatory factor 1 (known as Iba-1), interleukin-1β (IL-1β), and ST2 receptor mRNA expression. Chronic AS treatment reduced CCI-induced spinal cord glial fibrillary acidic protein (GFAP), Iba-1, IL-1β, tumor necrosis factor-α (TNF-α), interleukin-33 (IL-33) and ST2 mRNA expression. Chronic treatment with AS (3 mg/kg, s.c.) did not alter aspartate aminotransferase, alanine aminotransferase, urea or creatinine plasma levels. Together, these results suggest that the acute analgesic effect of AS depends on activating the cGMP/PKG/ATP-sensitive potassium channel signaling pathway. Moreover, chronic AS diminishes CCI-induced mechanical and thermal hyperalgesia by reducing the activation of spinal cord microglia and astrocytes, decreasing TNF-α, IL-1β and IL-33 cytokines expression. This spinal cord immune modulation was more prominent in the chronic treatment with AS. Thus, nitroxyl limits CCI-induced neuropathic pain by reducing spinal cord glial cells activation.
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Affiliation(s)
- Daniela T Longhi-Balbinot
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid PR 445, Km 380, Cx. Postal 10.011, 86057-970, Londrina, Parana, Brazil
| | - Ana C Rossaneis
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid PR 445, Km 380, Cx. Postal 10.011, 86057-970, Londrina, Parana, Brazil
| | - Felipe A Pinho-Ribeiro
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid PR 445, Km 380, Cx. Postal 10.011, 86057-970, Londrina, Parana, Brazil
| | - Mariana M Bertozzi
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid PR 445, Km 380, Cx. Postal 10.011, 86057-970, Londrina, Parana, Brazil
| | - Fernando Q Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, 3900, Ribeirão Preto, 14049-900, São Paulo, Brazil
| | - José C Alves-Filho
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, 3900, Ribeirão Preto, 14049-900, São Paulo, Brazil
| | - Thiago M Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, 3900, Ribeirão Preto, 14049-900, São Paulo, Brazil
| | - Jean P S Peron
- Department of Immunology, Institute of Biomedical Sciences, Ed. Biomédicas IV, University of Sao Paulo, Av. Prof. Dr. Lineu Prestes, 1730, 05508-900, São Paulo, Brazil
| | - Katrina M Miranda
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, AZ, USA
| | - Rubia Casagrande
- Department of Pharmaceutical Sciences, University Hospital (Health Science Centre), Av. Robert Koch, 60, 86038-350, State University of Londrina, Parana, Brazil
| | - Waldiceu A Verri
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid PR 445, Km 380, Cx. Postal 10.011, 86057-970, Londrina, Parana, Brazil.
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Pharmacological characterization of the vasodilating effect induced by the ruthenium complex cis-[Ru(NO)(NO2)(bpy)2].(PF6)2. J Cardiovasc Pharmacol 2016; 65:168-75. [PMID: 25384194 DOI: 10.1097/fjc.0000000000000175] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Nitric oxide (NO) can be found in different species and is a potent vasodilator. The ruthenium compound cis-[Ru(NO)(NO2)(bpy)2].(PF6)2 (BPY) can generate NO. This study aimed to investigate the BPY stability at physiological pH, the cellular mechanisms involved in BPY effect, NO species originating from BPY, and to verify how BPY affects blood pressure. Our results has shown that at pH 7.4 and 9.4, the NO coordinated to ruthenium (Ru-NO) is converted to nitrite (Ru-NO2) and remains stable. In aortic rings, the stable configuration of BPY (Ru-NO2) induces vascular relaxation in a concentration-dependent manner. Thus, further experiments were made with stable configuration of BPY (Ru-NO2). The relaxation induced by BPY was abolished in the presence of guanylyl cyclase inhibitor and decreased in the presence of potassium channel blocker. By using radicalar (NO) and nitroxyl (NO) scavenger, our results suggest that the BPY mainly release the radicalar species. By using fluorescence probes to detect intracellular NO concentration ([NO]i) and cytosolic Ca concentration ([Ca]c), we verified that in smooth muscle cells, BPY induces an increase in [NO]i and a decrease in [Ca]c. The intravenous bolus injection of 1.25, 2.5, and 5.0 mg/kg from stable configuration of BPY results in a decrease on basal blood pressure values. Taken together, our results indicated that the stable configuration of the compound BPY induces vascular relaxation in aorta because of NO release and decrease of [Ca]c in vascular smooth muscle cells. Also, the stable configuration is able to reduce the blood pressure in a dose-dependent manner.
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HNO/Thiol Biology as a Therapeutic Target. OXIDATIVE STRESS IN APPLIED BASIC RESEARCH AND CLINICAL PRACTICE 2016. [DOI: 10.1007/978-3-319-30705-3_14] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Nitroxyl (HNO): A Reduced Form of Nitric Oxide with Distinct Chemical, Pharmacological, and Therapeutic Properties. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2016:4867124. [PMID: 26770654 PMCID: PMC4685437 DOI: 10.1155/2016/4867124] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 08/14/2015] [Accepted: 09/01/2015] [Indexed: 01/18/2023]
Abstract
Nitroxyl (HNO), the one-electron reduced form of nitric oxide (NO), shows a distinct chemical and biological profile from that of NO. HNO is currently being viewed as a vasodilator and positive inotropic agent that can be used as a potential treatment for heart failure. The ability of HNO to react with thiols and thiol containing proteins is largely used to explain the possible biological actions of HNO. Herein, we summarize different aspects related to HNO including HNO donors, chemistry, biology, and methods used for its detection.
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Interaction of Hydrogen Sulfide with Nitric Oxide in the Cardiovascular System. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2016:6904327. [PMID: 26640616 PMCID: PMC4657111 DOI: 10.1155/2016/6904327] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Accepted: 06/21/2015] [Indexed: 01/07/2023]
Abstract
Historically acknowledged as toxic gases, hydrogen sulfide (H2S) and nitric oxide (NO) are now recognized as the predominant members of a new family of signaling molecules, “gasotransmitters” in mammals. While H2S is biosynthesized by three constitutively expressed enzymes (CBS, CSE, and 3-MST) from L-cysteine and homocysteine, NO is generated endogenously from L-arginine by the action of various isoforms of NOS. Both gases have been transpired as the key and independent regulators of many physiological functions in mammalian cardiovascular, nervous, gastrointestinal, respiratory, and immune systems. The analogy between these two gasotransmitters is evident not only from their paracrine mode of signaling, but also from the identical and/or shared signaling transduction pathways. With the plethora of research in the pathophysiological role of gasotransmitters in various systems, the existence of interplay between these gases is being widely accepted. Chemical interaction between NO and H2S may generate nitroxyl (HNO), which plays a specific effective role within the cardiovascular system. In this review article, we have attempted to provide current understanding of the individual and interactive roles of H2S and NO signaling in mammalian cardiovascular system, focusing particularly on heart contractility, cardioprotection, vascular tone, angiogenesis, and oxidative stress.
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Singh TP, Vangaveti VN, Malabu UH. Dipeptidyl peptidase-4 inhibitors and their potential role in the management of atherosclerosis--A review. Diabetes Metab Syndr 2015; 9:223-229. [PMID: 26067782 DOI: 10.1016/j.dsx.2015.04.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND Dipeptidyl peptidase-4 (DPP-4) inhibitors are a relatively new class of anti-diabetic drugs that have therapeutic potential in the management of atherosclerosis. Of the numerous DPP-4 inhibitors in clinical practice no studies have been conducted to compare their anti-atherosclerotic effects despite growing evidence of their usefulness in the high risk population. OBJECTIVE The aim of the study was to review the anti-athero-thrombotic effects of DPP-4 inhibitors in atherosclerotic diseases. METHOD A literature search was conducted on MEDLINE and the COCHRANE Library using the terms "DPP-4 Inhibitors", "atherosclerosis", "GLP", "inflammation", "cytokines", "stroke", "ischaemic heart disease", "hypertension" and "peripheral vascular disease". A mathematical model devised by us was used to derive and compare the anti-inflammatory effects of the DPP-4 inhibitors using protective score [PS]. Data was analysed for alogliptin, linagliptin, saxagliptin, sitagliptin, and vildagliptin. RESULTS Sixty two published studies collected in the search were assessed for relevance to this study. Sitagliptin had the highest PS [n=5] while linagliptin and saxagliptin yielded the lowest PS [n=1]. This comparison and scoring system was limited to the data collected; which did not investigate for all athero-thrombotic factors selected in this study. CONCLUSION The findings suggest potential usefulness of DPP-4 in atherosclerotic diseases. It also reflected a possible superiority of sitagliptin over the other DPP-4 inhibitors in the management of atherosclerosis. Further investigations are required to establish specific inflammatory cytokines influenced by the DPP-4 inhibitors and to elucidate their clinical application in athero-thrombotic disease.
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Affiliation(s)
- Tejas P Singh
- Translational Research on Endocrinology and Diabetes [TREAD], School of Medicine and Dentistry, James Cook University Townsville, Australia
| | - Venkat N Vangaveti
- Translational Research on Endocrinology and Diabetes [TREAD], School of Medicine and Dentistry, James Cook University Townsville, Australia
| | - Usman H Malabu
- Translational Research on Endocrinology and Diabetes [TREAD], School of Medicine and Dentistry, James Cook University Townsville, Australia.
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Hamilton K, MacKenzie A. Gender specific generation of nitroxyl (HNO) from rat endothelium. Vascul Pharmacol 2015; 71:208-14. [DOI: 10.1016/j.vph.2015.03.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 02/16/2015] [Accepted: 03/09/2015] [Indexed: 10/23/2022]
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Nitroxyl: a vasodilator of human vessels that is not susceptible to tolerance. Clin Sci (Lond) 2015; 129:179-87. [PMID: 25728899 DOI: 10.1042/cs20140759] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Pre-clinical studies have identified nitroxyl (HNO), the reduced congener of nitric oxide (NO•), as a potent vasodilator which is resistant to tolerance development. The present study explores the efficacy of HNO in human blood vessels and describes, for the first time, a vasodilator for humans that is not susceptible to tolerance. Human radial arteries and saphenous veins were obtained from patients undergoing coronary artery graft surgery and mounted in organ baths. Repeated vasodilator responses to the HNO donor Angeli's salt (AS) and NO• donor glyceryl trinitrate (GTN) were determined. AS- and GTN-induced concentration-dependent vasorelaxation of both human radial arteries (AS pEC50: 6.5 ± 0.2; -log M) and saphenous veins (pEC50: 6.7 ± 0.1) with similar potency. In human radial arteries, GTN-induced relaxation was reduced by the NO• scavenger hydroxocobalamin (HXC; P<0.05) but was unaffected by the HNO scavenger L-cysteine. Alternately, AS was unaffected by HXC but was reduced by L-cysteine (5-fold shift, P<0.05). The sGC (soluble guanylate cyclase) inhibitor ODQ abolished responses to both AS and GTN in arteries and veins (P<0.05). Inhibition of voltage-dependent potassium channels (Kv channels) with 4-AP also significantly reduced responses to AS (pEC50: 5.5) and GTN, suggesting that the relaxation to both redox congeners is cGMP- and Kv channel-dependent. Critically, a concentration-dependent development of tolerance to GTN (1 and 10 μM; P<0.05), but not to AS, was observed in both saphenous veins and radial arteries. Like GTN, the HNO donor AS causes vasorelaxation of human blood vessels via activation of a cGMP-dependent pathway. Unlike GTN, however, it does not develop tolerance in human blood vessels.
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Combined nitric oxide-releasing poly(vinyl alcohol) film/F127 hydrogel for accelerating wound healing. Colloids Surf B Biointerfaces 2015; 130:182-91. [DOI: 10.1016/j.colsurfb.2015.04.007] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 04/01/2015] [Accepted: 04/02/2015] [Indexed: 02/07/2023]
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Liu P, Jing X, Yu F, Lv C, Chen L. A near-infrared fluorescent probe for the selective detection of HNO in living cells and in vivo. Analyst 2015; 140:4576-83. [DOI: 10.1039/c5an00759c] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We present a near-infrared fluorescent probe for the detection of nitroxyl (HNO) in living cells and in mice.
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Affiliation(s)
- Ping Liu
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation; The Research Center for Coastal Environmental Engineering and Technology
- Yantai Institute of Coastal Zone Research
- Chinese Academy of Sciences
- Yantai 264003, China
| | - Xiaotong Jing
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation; The Research Center for Coastal Environmental Engineering and Technology
- Yantai Institute of Coastal Zone Research
- Chinese Academy of Sciences
- Yantai 264003, China
| | - Fabiao Yu
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation; The Research Center for Coastal Environmental Engineering and Technology
- Yantai Institute of Coastal Zone Research
- Chinese Academy of Sciences
- Yantai 264003, China
- Medicine Research Center
| | - Changjun Lv
- Medicine Research Center
- Binzhou Medical University
- Yantai 264003, P.R. China
| | - Lingxin Chen
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation; The Research Center for Coastal Environmental Engineering and Technology
- Yantai Institute of Coastal Zone Research
- Chinese Academy of Sciences
- Yantai 264003, China
- Medicine Research Center
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Berenyiova A, Grman M, Mijuskovic A, Stasko A, Misak A, Nagy P, Ondriasova E, Cacanyiova S, Brezova V, Feelisch M, Ondrias K. The reaction products of sulfide and S-nitrosoglutathione are potent vasorelaxants. Nitric Oxide 2014; 46:123-30. [PMID: 25529482 DOI: 10.1016/j.niox.2014.12.008] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 12/02/2014] [Accepted: 12/15/2014] [Indexed: 12/28/2022]
Abstract
The chemical interaction of sodium sulfide (Na2S) with the NO-donor S-nitrosoglutathione (GSNO) has been described to generate new reaction products, including polysulfides and nitrosopersulfide (SSNO(-)) via intermediacy of thionitrous acid (HSNO). The aim of the present work was to investigate the vascular effects of the longer-lived products of the Sulfide/GSNO interaction. Here we show that the products of this reaction relax precontracted isolated rings of rat thoracic aorta and mesenteric artery (but to a lesser degree rat uterus) with a >2-fold potency compared with the starting material, GSNO (50 nM), whereas Na2S and polysulfides have little effect at 1-5 µM. The onset of vasorelaxation of the reaction products was 7-10 times faster in aorta and mesenteric arteries compared with GSNO. Relaxation to GSNO (100-500 nM) was blocked by an inhibitor of soluble guanylyl cyclase, ODQ (0.1 and 10 µM), and by the NO scavenger cPTIO (100 µM), but less affected by prior acidification (pH 2-4), and unaffected by N-acetylcysteine (1 mM) or methemoglobin (20 µM heme). By contrast, relaxation to the Sulfide/GSNO reaction products (100-500 nM based on the starting material) was inhibited to a lesser extent by ODQ, only slightly decreased by cPTIO, more markedly inhibited by methemoglobin and N-acetylcysteine, and abolished by acidification before addition to the organ bath. The reaction mixture was found to generate NO as detected by EPR spectroscopy using N-(dithiocarboxy)-N-methyl-D-glucamine (MGD2)-Fe(2+) as spin trap. In conclusion, the Sufide/GSNO reaction products are faster and more pronounced vasorelaxants than GSNO itself. We conclude that in addition to NO formation from SSNO(-), reaction products other than polysulfides may give rise to nitroxyl (HNO) and be involved in the pronounced relaxation induced by the Sulfide/GSNO cross-talk.
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Affiliation(s)
- Andrea Berenyiova
- Institute of Normal and Pathological Physiology SAS, Sienkiewiczova 1, 81371 Bratislava, Slovakia
| | - Marian Grman
- Institute of Molecular Physiology and Genetics SAS, Vlarska 5, 83334 Bratislava, Slovakia; Center for Molecular Medicine SAS, Vlarska 7, 83101 Bratislava, Slovakia
| | - Ana Mijuskovic
- Institute for Biological Research "Siniša Stanković", University of Belgrade, Blvd Despota Stefana 142, Belgrade, Serbia
| | - Andrej Stasko
- Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinskeho 9, 81237 Bratislava, Slovakia
| | - Anton Misak
- Institute of Molecular Physiology and Genetics SAS, Vlarska 5, 83334 Bratislava, Slovakia
| | - Peter Nagy
- Department of Molecular Immunology and Toxicology, National Institute of Oncology, Ráth György utca 7-9, Budapest, 1122 Hungary
| | - Elena Ondriasova
- Faculty of Pharmacy, Comenius University, Odbojarov 10, 83232 Bratislava, Slovakia
| | - Sona Cacanyiova
- Institute of Normal and Pathological Physiology SAS, Sienkiewiczova 1, 81371 Bratislava, Slovakia
| | - Vlasta Brezova
- Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinskeho 9, 81237 Bratislava, Slovakia
| | - Martin Feelisch
- Clinical & Experimental Sciences, Faculty of Medicine, Southampton General Hospital, University of Southampton, Tremona Road, Southampton, UK
| | - Karol Ondrias
- Institute of Molecular Physiology and Genetics SAS, Vlarska 5, 83334 Bratislava, Slovakia.
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Skeff MA, Brito GAC, de Oliveira MG, Braga CM, Cavalcante MM, Baldim V, Holanda-Afonso RC, Silva-Boghossian CM, Colombo AP, Ribeiro RA, Moura-Neto V, Leitão RFC. S-nitrosoglutathione accelerates recovery from 5-fluorouracil-induced oral mucositis. PLoS One 2014; 9:e113378. [PMID: 25478918 PMCID: PMC4257535 DOI: 10.1371/journal.pone.0113378] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 10/16/2014] [Indexed: 11/19/2022] Open
Abstract
Introduction Mucositis induced by anti-neoplastic drugs is an important, dose-limiting and costly side-effect of cancer therapy. Aim To evaluate the effect of the topical application of S-nitrosoglutathione (GSNO), a nitric oxide donor, on 5-fluorouracil (5-FU)-induced oral mucositis in hamsters. Materials and Methods Oral mucositis was induced in male hamsters by two intraperitoneal administrations of 5-FU on the first and second days of the experiment (60 and 40 mg/kg, respectively) followed by mechanical trauma on the fourth day. Animals received saline, HPMC or HPMC/GSNO (0.1, 0.5 or 2.0 mM) 1 h prior to the 5-FU injection and twice a day for 10 or 14 days. Samples of cheek pouches were harvested for: histopathological analysis, TNF-α and IL-1β levels, immunohistochemical staining for iNOS, TNF-α, IL-1β, Ki67 and TGF-β RII and a TUNEL assay. The presence and levels of 39 bacterial taxa were analyzed using the Checkerboard DNA-DNA hybridization method. The profiles of NO released from the HPMC/GSNO formulations were characterized using chemiluminescence. Results The HPMC/GSNO formulations were found to provide sustained release of NO for more than 4 h at concentration-dependent rates of 14 to 80 nmol/mL/h. Treatment with HPMC/GSNO (0.5 mM) significantly reduced mucosal damage, inflammatory alterations and cell death associated with 5-FU-induced oral mucositis on day 14 but not on day 10. HPMC/GSNO administration also reversed the inhibitory effect of 5-FU on cell proliferation on day 14. In addition, we observed that the chemotherapy significantly increased the levels and/or prevalence of several bacterial species. Conclusion Topical HPMC/GSNO accelerates mucosal recovery, reduces inflammatory parameters, speeds up re-epithelization and decreases levels of periodontopathic species in mucosal ulcers.
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Affiliation(s)
- Maria Adriana Skeff
- Laboratory of Cell Morphogenesis, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Department of Morphology, School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Gerly A. C. Brito
- Department of Morphology, School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | | | - Cintia M. Braga
- Department of Morphology, School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Matheus M. Cavalcante
- Department of Morphology, School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Victor Baldim
- Institute of Chemistry, University of Campinas, UNICAMP, Campinas, SP, Brazil
| | - Rosenilde C. Holanda-Afonso
- Laboratory of Cell Morphogenesis, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Carina M. Silva-Boghossian
- Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Faculty of Dentistry, University of Grande Rio, Duque de Caxias, RJ, Brazil
| | - Ana Paula Colombo
- Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Ronaldo A. Ribeiro
- Department of Physiology and Pharmacology, School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Vivaldo Moura-Neto
- Laboratory of Cell Morphogenesis, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Instituto Estadual do Cérebro Paulo Niemeyer, Rio de Janeiro, RJ, Brazil
| | - Renata F. C. Leitão
- Department of Morphology, School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
- * E-mail:
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Zhu G, Groneberg D, Sikka G, Hori D, Ranek MJ, Nakamura T, Takimoto E, Paolocci N, Berkowitz DE, Friebe A, Kass DA. Soluble guanylate cyclase is required for systemic vasodilation but not positive inotropy induced by nitroxyl in the mouse. Hypertension 2014; 65:385-92. [PMID: 25452469 DOI: 10.1161/hypertensionaha.114.04285] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Nitroxyl (HNO), the reduced and protonated form of nitric oxide (NO·), confers unique physiological effects including vasorelaxation and enhanced cardiac contractility. These features have spawned current pharmaceutical development of HNO donors as heart failure therapeutics. HNO interacts with selective redox sensitive cysteines to effect signaling but is also proposed to activate soluble guanylate cyclase (sGC) in vitro to induce vasodilation and potentially enhance contractility. Here, we tested whether sGC stimulation is required for these HNO effects in vivo and if HNO also modifies a redox-sensitive cysteine (C42) in protein kinase G-1α to control vasorelaxation. Intact mice and isolated arteries lacking the sGC-β subunit (sGCKO, results in full sGC deficiency) or expressing solely a redox-dead C42S mutant protein kinase G-1α were exposed to the pure HNO donor, CXL-1020. CXL-1020 induced dose-dependent systemic vasodilation while increasing contractility in controls; however, vasodilator effects were absent in sGCKO mice whereas contractility response remained. The CXL-1020 dose reversing 50% of preconstricted force in aortic rings was ≈400-fold greater in sGCKO than controls. Cyclic-GMP and cAMP levels were unaltered in myocardium exposed to CXL-1020, despite its inotropic-vasodilator activity. In protein kinase G-1α(C42S) mice, CXL-1020 induced identical vasorelaxation in vivo and in isolated aortic and mesenteric vessels as in littermate controls. In both groups, dilation was near fully blocked by pharmacologically inhibiting sGC. Thus, sGC and cGMP-dependent signaling are necessary and sufficient for HNO-induced vasodilation in vivo but are not required for positive inotropic action. Redox modulation of protein kinase G-1α is not a mechanism for HNO-mediated vasodilation.
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Affiliation(s)
- Guangshuo Zhu
- From the Department of Medicine, Division of Cardiology, Johns Hopkins School of Medicine, Baltimore MD (G.Z., M.J.R., T.N., E.T., N.P., D.A.K.); Institut of Vegetative Physiology, Julius Maximilians-Universität Würzburg, Würzburg, Germany (D.G., A.F.); and Departments of Anesthesia (G.S., D.E.B.) and Surgery (D.H.), Johns Hopkins Medical Institutions, Baltimore MD
| | - Dieter Groneberg
- From the Department of Medicine, Division of Cardiology, Johns Hopkins School of Medicine, Baltimore MD (G.Z., M.J.R., T.N., E.T., N.P., D.A.K.); Institut of Vegetative Physiology, Julius Maximilians-Universität Würzburg, Würzburg, Germany (D.G., A.F.); and Departments of Anesthesia (G.S., D.E.B.) and Surgery (D.H.), Johns Hopkins Medical Institutions, Baltimore MD
| | - Gautam Sikka
- From the Department of Medicine, Division of Cardiology, Johns Hopkins School of Medicine, Baltimore MD (G.Z., M.J.R., T.N., E.T., N.P., D.A.K.); Institut of Vegetative Physiology, Julius Maximilians-Universität Würzburg, Würzburg, Germany (D.G., A.F.); and Departments of Anesthesia (G.S., D.E.B.) and Surgery (D.H.), Johns Hopkins Medical Institutions, Baltimore MD
| | - Daijiro Hori
- From the Department of Medicine, Division of Cardiology, Johns Hopkins School of Medicine, Baltimore MD (G.Z., M.J.R., T.N., E.T., N.P., D.A.K.); Institut of Vegetative Physiology, Julius Maximilians-Universität Würzburg, Würzburg, Germany (D.G., A.F.); and Departments of Anesthesia (G.S., D.E.B.) and Surgery (D.H.), Johns Hopkins Medical Institutions, Baltimore MD
| | - Mark J Ranek
- From the Department of Medicine, Division of Cardiology, Johns Hopkins School of Medicine, Baltimore MD (G.Z., M.J.R., T.N., E.T., N.P., D.A.K.); Institut of Vegetative Physiology, Julius Maximilians-Universität Würzburg, Würzburg, Germany (D.G., A.F.); and Departments of Anesthesia (G.S., D.E.B.) and Surgery (D.H.), Johns Hopkins Medical Institutions, Baltimore MD
| | - Taishi Nakamura
- From the Department of Medicine, Division of Cardiology, Johns Hopkins School of Medicine, Baltimore MD (G.Z., M.J.R., T.N., E.T., N.P., D.A.K.); Institut of Vegetative Physiology, Julius Maximilians-Universität Würzburg, Würzburg, Germany (D.G., A.F.); and Departments of Anesthesia (G.S., D.E.B.) and Surgery (D.H.), Johns Hopkins Medical Institutions, Baltimore MD
| | - Eiki Takimoto
- From the Department of Medicine, Division of Cardiology, Johns Hopkins School of Medicine, Baltimore MD (G.Z., M.J.R., T.N., E.T., N.P., D.A.K.); Institut of Vegetative Physiology, Julius Maximilians-Universität Würzburg, Würzburg, Germany (D.G., A.F.); and Departments of Anesthesia (G.S., D.E.B.) and Surgery (D.H.), Johns Hopkins Medical Institutions, Baltimore MD
| | - Nazareno Paolocci
- From the Department of Medicine, Division of Cardiology, Johns Hopkins School of Medicine, Baltimore MD (G.Z., M.J.R., T.N., E.T., N.P., D.A.K.); Institut of Vegetative Physiology, Julius Maximilians-Universität Würzburg, Würzburg, Germany (D.G., A.F.); and Departments of Anesthesia (G.S., D.E.B.) and Surgery (D.H.), Johns Hopkins Medical Institutions, Baltimore MD
| | - Dan E Berkowitz
- From the Department of Medicine, Division of Cardiology, Johns Hopkins School of Medicine, Baltimore MD (G.Z., M.J.R., T.N., E.T., N.P., D.A.K.); Institut of Vegetative Physiology, Julius Maximilians-Universität Würzburg, Würzburg, Germany (D.G., A.F.); and Departments of Anesthesia (G.S., D.E.B.) and Surgery (D.H.), Johns Hopkins Medical Institutions, Baltimore MD
| | - Andreas Friebe
- From the Department of Medicine, Division of Cardiology, Johns Hopkins School of Medicine, Baltimore MD (G.Z., M.J.R., T.N., E.T., N.P., D.A.K.); Institut of Vegetative Physiology, Julius Maximilians-Universität Würzburg, Würzburg, Germany (D.G., A.F.); and Departments of Anesthesia (G.S., D.E.B.) and Surgery (D.H.), Johns Hopkins Medical Institutions, Baltimore MD
| | - David A Kass
- From the Department of Medicine, Division of Cardiology, Johns Hopkins School of Medicine, Baltimore MD (G.Z., M.J.R., T.N., E.T., N.P., D.A.K.); Institut of Vegetative Physiology, Julius Maximilians-Universität Würzburg, Würzburg, Germany (D.G., A.F.); and Departments of Anesthesia (G.S., D.E.B.) and Surgery (D.H.), Johns Hopkins Medical Institutions, Baltimore MD.
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Chin KY, Qin C, Cao N, Kemp-Harper BK, Woodman OL, Ritchie RH. The concomitant coronary vasodilator and positive inotropic actions of the nitroxyl donor Angeli's salt in the intact rat heart: contribution of soluble guanylyl cyclase-dependent and -independent mechanisms. Br J Pharmacol 2014; 171:1722-34. [PMID: 24372173 DOI: 10.1111/bph.12568] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 12/11/2013] [Accepted: 12/20/2013] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND AND PURPOSE The NO redox sibling nitroxyl (HNO) elicits soluble guanylyl cyclase (sGC)-dependent vasodilatation. HNO has high reactivity with thiols, which is attributed with HNO-enhanced left ventricular (LV) function. Here, we tested the hypothesis that the concomitant vasodilatation and inotropic actions induced by a HNO donor, Angeli's salt (sodium trioxodinitrate), were sGC-dependent and sGC-independent respectively. EXPERIMENTAL APPROACH Haemodynamic responses to Angeli's salt (10 pmol-10 μmol), alone and in the presence of scavengers of HNO (L-cysteine, 4 mM) or of NO [hydroxocobalamin (HXC), 100 μM] or a selective inhibitor of sGC [1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one (ODQ), 10 μM], a CGRP receptor antagonist (CGRP8-37 , 0.1 μM) or a blocker of voltage-dependent potassium channels [4-aminopyridine (4-AP), 1 mM] were determined in isolated hearts from male rats. KEY RESULTS Angeli's salt elicited concomitant, dose-dependent increases in coronary flow and LV systolic and diastolic function. Both L-cysteine and ODQ shifted (but did not abolish) the dose-response curve of each of these effects to the right, implying contributions from HNO and sGC in both the vasodilator and inotropic actions. In contrast, neither HXC, CGRP8-37 nor 4-AP affected these actions. CONCLUSIONS AND IMPLICATIONS Both vasodilator and inotropic actions of the HNO donor Angeli's salt were mediated in part by sGC-dependent mechanisms, representing the first evidence that sGC contributes to the inotropic and lusitropic action of HNO in the intact heart. Thus, HNO acutely enhances LV contraction and relaxation, while concomitantly unloading the heart, potentially beneficial actions in failing hearts.
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Affiliation(s)
- Kai Yee Chin
- Heart Failure Pharmacology, Baker IDI Heart & Diabetes Institute, Melbourne, Vic., Australia; School of Medical Sciences, RMIT University, Bundoora, Vic., Australia
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Smulik R, Dębski D, Zielonka J, Michałowski B, Adamus J, Marcinek A, Kalyanaraman B, Sikora A. Nitroxyl (HNO) reacts with molecular oxygen and forms peroxynitrite at physiological pH. Biological Implications. J Biol Chem 2014; 289:35570-81. [PMID: 25378389 DOI: 10.1074/jbc.m114.597740] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Nitroxyl (HNO), the protonated one-electron reduction product of NO, remains an enigmatic reactive nitrogen species. Its chemical reactivity and biological activity are still not completely understood. HNO donors show biological effects different from NO donors. Although HNO reactivity with molecular oxygen is described in the literature, the product of this reaction has not yet been unambiguously identified. Here we report that the decomposition of HNO donors under aerobic conditions in aqueous solutions at physiological pH leads to the formation of peroxynitrite (ONOO(-)) as a major intermediate. We have specifically detected and quantified ONOO(-) with the aid of boronate probes, e.g. coumarin-7-boronic acid or 4-boronobenzyl derivative of fluorescein methyl ester. In addition to the major phenolic products, peroxynitrite-specific minor products of oxidation of boronate probes were detected under these conditions. Using the competition kinetics method and a set of HNO scavengers, the value of the second order rate constant of the HNO reaction with oxygen (k = 1.8 × 10(4) m(-1) s(-1)) was determined. The rate constant (k = 2 × 10(4) m(-1) s(-1)) was also determined using kinetic simulations. The kinetic parameters of the reactions of HNO with selected thiols, including cysteine, dithiothreitol, N-acetylcysteine, captopril, bovine and human serum albumins, and hydrogen sulfide, are reported. Biological and cardiovascular implications of nitroxyl reactions are discussed.
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Affiliation(s)
- Renata Smulik
- From the Institute of Applied Radiation Chemistry, Lodz University of Technology, 90-924 Lodz, Poland and
| | - Dawid Dębski
- From the Institute of Applied Radiation Chemistry, Lodz University of Technology, 90-924 Lodz, Poland and
| | - Jacek Zielonka
- the Department of Biophysics and Free Radical Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin 53226
| | - Bartosz Michałowski
- From the Institute of Applied Radiation Chemistry, Lodz University of Technology, 90-924 Lodz, Poland and
| | - Jan Adamus
- From the Institute of Applied Radiation Chemistry, Lodz University of Technology, 90-924 Lodz, Poland and
| | - Andrzej Marcinek
- From the Institute of Applied Radiation Chemistry, Lodz University of Technology, 90-924 Lodz, Poland and
| | - Balaraman Kalyanaraman
- the Department of Biophysics and Free Radical Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin 53226
| | - Adam Sikora
- From the Institute of Applied Radiation Chemistry, Lodz University of Technology, 90-924 Lodz, Poland and
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40
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Eberhardt M, Dux M, Namer B, Miljkovic J, Cordasic N, Will C, Kichko TI, de la Roche J, Fischer M, Suárez SA, Bikiel D, Dorsch K, Leffler A, Babes A, Lampert A, Lennerz JK, Jacobi J, Martí MA, Doctorovich F, Högestätt ED, Zygmunt PM, Ivanovic-Burmazovic I, Messlinger K, Reeh P, Filipovic MR. H2S and NO cooperatively regulate vascular tone by activating a neuroendocrine HNO-TRPA1-CGRP signalling pathway. Nat Commun 2014; 5:4381. [PMID: 25023795 PMCID: PMC4104458 DOI: 10.1038/ncomms5381] [Citation(s) in RCA: 298] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Accepted: 06/12/2014] [Indexed: 02/08/2023] Open
Abstract
Nitroxyl (HNO) is a redox sibling of nitric oxide (NO) that targets distinct signalling pathways with pharmacological endpoints of high significance in the treatment of heart failure. Beneficial HNO effects depend, in part, on its ability to release calcitonin gene-related peptide (CGRP) through an unidentified mechanism. Here we propose that HNO is generated as a result of the reaction of the two gasotransmitters NO and H2S. We show that H2S and NO production colocalizes with transient receptor potential channel A1 (TRPA1), and that HNO activates the sensory chemoreceptor channel TRPA1 via formation of amino-terminal disulphide bonds, which results in sustained calcium influx. As a consequence, CGRP is released, which induces local and systemic vasodilation. H2S-evoked vasodilatatory effects largely depend on NO production and activation of HNO–TRPA1–CGRP pathway. We propose that this neuroendocrine HNO–TRPA1–CGRP signalling pathway constitutes an essential element for the control of vascular tone throughout the cardiovascular system. Nitric oxide (NO) and hydrogen sulphide (H2S) are two gaseous signalling molecules produced in tissues. Here the authors propose that NO and H2S react with each other to form nitroxyl (HNO), which activates the TRPA1 channel in nerve cells and triggers the release of the vasoactive peptide CGRP.
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Affiliation(s)
- Mirjam Eberhardt
- 1] Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nuremberg, Egerlandstrasse 1, 91058 Erlangen, Germany [2] Institute of Physiology and Pathophysiology Friedrich-Alexander University Erlangen-Nuremberg, Universitaetsstrasse 17, 91054 Erlangen, Germany [3] Department of Anesthesiology and Intensive Care, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany
| | - Maria Dux
- 1] Institute of Physiology and Pathophysiology Friedrich-Alexander University Erlangen-Nuremberg, Universitaetsstrasse 17, 91054 Erlangen, Germany [2] Department of Physiology, University of Szeged, Dóm tér 10, H-6720 Szeged, Hungary
| | - Barbara Namer
- Institute of Physiology and Pathophysiology Friedrich-Alexander University Erlangen-Nuremberg, Universitaetsstrasse 17, 91054 Erlangen, Germany
| | - Jan Miljkovic
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nuremberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Nada Cordasic
- Department of Nephrology and Hypertension, University of Erlangen-Nuremberg, Krankenhausstrasse 12, 91054 Erlangen, Germany
| | - Christine Will
- Institute of Physiology and Pathophysiology Friedrich-Alexander University Erlangen-Nuremberg, Universitaetsstrasse 17, 91054 Erlangen, Germany
| | - Tatjana I Kichko
- Institute of Physiology and Pathophysiology Friedrich-Alexander University Erlangen-Nuremberg, Universitaetsstrasse 17, 91054 Erlangen, Germany
| | - Jeanne de la Roche
- Department of Anesthesiology and Intensive Care, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany
| | - Michael Fischer
- 1] Institute of Physiology and Pathophysiology Friedrich-Alexander University Erlangen-Nuremberg, Universitaetsstrasse 17, 91054 Erlangen, Germany [2] Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge CB1 2PD, UK
| | - Sebastián A Suárez
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA, Buenos Aires, Argentina
| | - Damian Bikiel
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA, Buenos Aires, Argentina
| | - Karola Dorsch
- Institute of Pathology, University of Ulm, Albert-Einstein-Allee 23, 89070 Ulm, Germany
| | - Andreas Leffler
- Department of Anesthesiology and Intensive Care, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany
| | - Alexandru Babes
- 1] Institute of Physiology and Pathophysiology Friedrich-Alexander University Erlangen-Nuremberg, Universitaetsstrasse 17, 91054 Erlangen, Germany [2] Department of Anatomy, Physiology and Biophysics, Faculty of Biology, University of Bucharest, Splaiul Independentei 91-95, 050095 Bucharest, Romania
| | - Angelika Lampert
- 1] Institute of Physiology and Pathophysiology Friedrich-Alexander University Erlangen-Nuremberg, Universitaetsstrasse 17, 91054 Erlangen, Germany [2]
| | - Jochen K Lennerz
- Institute of Pathology, University of Ulm, Albert-Einstein-Allee 23, 89070 Ulm, Germany
| | - Johannes Jacobi
- Department of Nephrology and Hypertension, University of Erlangen-Nuremberg, Krankenhausstrasse 12, 91054 Erlangen, Germany
| | - Marcelo A Martí
- 1] Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA, Buenos Aires, Argentina [2] Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA, Buenos Aires, Argentina
| | - Fabio Doctorovich
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA, Buenos Aires, Argentina
| | - Edward D Högestätt
- Clinical Chemistry & Pharmacology, Department of Laboratory Medicine, Lund University Hospital, SE-221 85 Lund, Sweden
| | - Peter M Zygmunt
- Clinical Chemistry & Pharmacology, Department of Laboratory Medicine, Lund University Hospital, SE-221 85 Lund, Sweden
| | - Ivana Ivanovic-Burmazovic
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nuremberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Karl Messlinger
- Institute of Physiology and Pathophysiology Friedrich-Alexander University Erlangen-Nuremberg, Universitaetsstrasse 17, 91054 Erlangen, Germany
| | - Peter Reeh
- 1] Institute of Physiology and Pathophysiology Friedrich-Alexander University Erlangen-Nuremberg, Universitaetsstrasse 17, 91054 Erlangen, Germany [2]
| | - Milos R Filipovic
- 1] Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nuremberg, Egerlandstrasse 1, 91058 Erlangen, Germany [2]
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41
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Bobko AA, Khramtsov VV. Mechanistic studies of oxidative decomposition of Angeli's salt and PAPA NONOate. Nitric Oxide 2014; 40:92-8. [PMID: 24947085 DOI: 10.1016/j.niox.2014.05.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 05/13/2014] [Accepted: 05/31/2014] [Indexed: 10/25/2022]
Abstract
Nitric oxide, (·)NO, and product of its one-electron reduction, nitroxyl NO(-), are important molecules in the biochemistry of living organisms. At physiological conditions nitroxyl exists in its protonated form, HNO. Angeli's salt, AS, and diazeniumdiolates, NONOates, are widely used donors of HNO and (·)NO, correspondingly. In this work we observed oxidative decomposition of AS and PAPA NONOate in the presence of mild oxidizing agents, 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide, cPTIO, and 2,2'-azinobis(3-ethylbenzolthiazoline-6-sulfonate) radical, ABTS(·-). The observed unexpected fast oxidative decomposition of AS with release of NO instead of HNO suggests the need for a reevaluation of some of the biological effects of AS assigned to action of HNO. While oxidative decomposition of NONOate did not result in release of alternative NOx specimen but only (·)NO, it significantly affects the rates and stoichiometry of (·)NO release. In summary, possible contribution of oxidative decomposition of AS and NONOates should be taken into account upon interpretation of their actions in chemical and biological systems.
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Affiliation(s)
- Andrey A Bobko
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Internal Medicine, The Ohio State University, Columbus, OH 43210, USA.
| | - Valery V Khramtsov
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Internal Medicine, The Ohio State University, Columbus, OH 43210, USA.
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42
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Silva BR, Lunardi CN, Araki K, Biazzotto JC, Da Silva RS, Bendhack LM. Gold nanoparticle modifies nitric oxide release and vasodilation in rat aorta. J Chem Biol 2014; 7:57-65. [PMID: 24711859 DOI: 10.1007/s12154-014-0109-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Accepted: 03/04/2014] [Indexed: 11/28/2022] Open
Abstract
Nitric oxide (NO) plays an important role on several biological functions. Recently, it has been reported the possibility of modifying the NO release profile from the NO donors through its coupling to gold nanoparticles (AuNPs). Thus, AuNPs were synthesized and they were exposed to the NO donor ruthenium complex Cis-[Ru(bpy)2(NO)(4PySH)].(PF6)3 termed (Ru-4PySH)-forming AuNPs-{Ru-4PySH}n cluster. Our results indicate that AuNPs do not modify the maximum effect (ME) and potency (pD2) in the vasodilation induced by Ru-4PySH. Both complexes induce similar vascular relaxation in concentration-dependent way. However, the NO released from the complex AuNPs-{Ru-4PySH}n is lower than Ru-4PySH. Both complexes release only NO(0) specie, but AuNPs-{Ru-4PySH}n releases NO in constant way and exclusively in the extracellular medium. In time-course, Ru-4Py-SH was faster than AuNPs-{Ru-4PySH}n in inducing the maximum vasodilation. Inhibition of soluble guanylyl cyclase (sGC) abolished the vasodilation induced by Ru-4PYSH, but not by AuNPs-{Ru-4PySH}n. Non-selective potassium (K(+)) channel blocker TEA had no effect on the vasodilation induced by AuNPs-{Ru-4PySH}n, but it reduced the potency to Ru-4PySH. In conclusion, our results suggest that AuNPs can reduce the permeability of NO donor Ru-4PySH due to AuNPs-{Ru-4PySH}n cluster formation. AuNPs reduce NO release, but they do not impair the vasodilator effect induced by the NO donor. Ru-4PySH induces vasodilation by sGC and K(+) channels activation, while AuNPs-{Ru-4PySH}n activates mainly sGC. Taken together, these findings represent a new pharmacological strategy to control the NO release which could activate selective biological targets.
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Affiliation(s)
- Bruno R Silva
- Department of Pharmacology, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, SP 14049-900 Brazil ; Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, SP 14040-903 Brazil ; Laboratório de Farmacologia, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. do Café S/N, 14040-903 Ribeirão Preto, São Paulo Brazil
| | - Claure N Lunardi
- Faculty of Ceilândia, University of Brasilia, Brasília, DF 7220-140 Brazil
| | - Koiti Araki
- Institute of Chemistry, University of São Paulo, São Paulo, SP 05508-000 Brazil
| | - Juliana C Biazzotto
- Laboratory of Chemistry, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, SP 14040-903 Brazil
| | - Roberto S Da Silva
- Laboratory of Chemistry, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, SP 14040-903 Brazil
| | - Lusiane M Bendhack
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, SP 14040-903 Brazil
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43
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Dautov RF, Ngo DTM, Licari G, Liu S, Sverdlov AL, Ritchie RH, Kemp-Harper BK, Horowitz JD, Chirkov YY. The nitric oxide redox sibling nitroxyl partially circumvents impairment of platelet nitric oxide responsiveness. Nitric Oxide 2013; 35:72-8. [PMID: 24012721 DOI: 10.1016/j.niox.2013.08.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 08/21/2013] [Accepted: 08/28/2013] [Indexed: 01/17/2023]
Abstract
Impaired platelet responsiveness to nitric oxide (NO resistance) is a common characteristic of many cardiovascular disease states and represents an independent risk factor for cardiac events and mortality. NO resistance reflects both scavenging of NO by superoxide (O2(-)), and impairment of the NO receptor, soluble guanylate cyclase (sGC). There is thus an urgent need for circumvention of NO resistance in order to improve clinical outcomes. Nitroxyl (HNO), like NO, produces vasodilator and anti-aggregatory effects, largely via sGC activation, but is not inactivated by O2(-). We tested the hypothesis that HNO circumvents NO resistance in human platelets. In 57 subjects with or without ischemic heart disease, platelet responses to the HNO donor isopropylamine NONOate (IPA/NO) and the NO donor sodium nitroprusside (SNP) were compared. While SNP (10μM) induced 29±3% (p<0.001) inhibition of platelet aggregation, IPA/NO (10μM) caused 75±4% inhibition (p<0.001). In NO-resistant subjects (n=28), the IPA/NO:SNP response ratio was markedly increased (p<0.01), consistent with partial circumvention of NO resistance. Similarly, cGMP accumulation in platelets was greater (p<0.001) with IPA/NO than with SNP stimulation. The NO scavenger carboxy-PTIO (CPTIO, 200μM) inhibited SNP and IPA/NO responses by 92±7% and 17±4% respectively (p<0.001 for differential inhibition), suggesting that effects of IPA/NO are only partially NO-mediated. ODQ (10μM) inhibited IPA/NO responses by 36±8% (p<0.001), consistent with a contribution of sGC/haem to IPA/NO inhibition of aggregation. There was no significant relationship between whole blood ROS content and IPA/NO responses. Thus the HNO donor IPA/NO substantially circumvents platelet NO resistance while acting, at least partially, as a haem-mediated sGC activator.
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Affiliation(s)
- R F Dautov
- Cardiology Unit, Basil Hetzel Institute, The Queen Elizabeth Hospital, University of Adelaide, Woodville, Australia.
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44
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Irvine JC, Cao N, Gossain S, Alexander AE, Love JE, Qin C, Horowitz JD, Kemp-Harper BK, Ritchie RH. HNO/cGMP-dependent antihypertrophic actions of isopropylamine-NONOate in neonatal rat cardiomyocytes: potential therapeutic advantages of HNO over NO. Am J Physiol Heart Circ Physiol 2013; 305:H365-77. [PMID: 23729209 DOI: 10.1152/ajpheart.00495.2012] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Nitroxyl (HNO) is a redox congener of NO. We now directly compare the antihypertrophic efficacy of HNO and NO donors in neonatal rat cardiomyocytes and compare their contributing mechanisms of actions in this setting. Isopropylamine-NONOate (IPA-NO) elicited concentration-dependent inhibition of endothelin-1 (ET1)-induced increases in cardiomyocyte size, with similar suppression of hypertrophic genes. Antihypertrophic IPA-NO actions were significantly attenuated by l-cysteine (HNO scavenger), Rp-8-pCTP-cGMPS (cGMP-dependent protein kinase inhibitor), and 1-H-(1,2,4)-oxodiazolo-quinxaline-1-one [ODQ; to target soluble guanylyl cyclase (sGC)] but were unaffected by carboxy-PTIO (NO scavenger) or CGRP8-37 (calcitonin gene-related peptide antagonist). Furthermore, IPA-NO significantly increased cardiomyocyte cGMP 3.5-fold (an l-cysteine-sensitive effect) and stimulated sGC activity threefold, without detectable NO release. IPA-NO also suppressed ET1-induced cardiomyocyte superoxide generation. The pure NO donor diethylamine-NONOate (DEA-NO) reproduced these IPA-NO actions but was sensitive to carboxy-PTIO rather than l-cysteine. Although IPA-NO stimulation of purified sGC was preserved under pyrogallol oxidant stress (in direct contrast to DEA-NO), cardiomyocyte sGC activity after either donor was attenuated by this stress. Excitingly IPA-NO also exhibited acute antihypertrophic actions in response to pressure overload in the intact heart. Together these data strongly suggest that IPA-NO protection against cardiomyocyte hypertrophy is independent of both NO and CGRP but rather utilizes novel HNO activation of cGMP signaling. Thus HNO acutely limits hypertrophy independently of NO, even under conditions of elevated superoxide. Development of longer-acting HNO donors may thus represent an attractive new strategy for the treatment of cardiac hypertrophy, as stand-alone and/or add-on therapy to standard care.
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Affiliation(s)
- Jennifer C Irvine
- Baker IDI Heart and Diabetes Institute, Melbourne, Victoria, Australia
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Zarpelon AC, Souza GR, Cunha TM, Schivo IRS, Marchesi M, Casagrande R, Pinge-Filho P, Cunha FQ, Ferreira SH, Miranda KM, Verri WA. The nitroxyl donor, Angeli's salt, inhibits inflammatory hyperalgesia in rats. Neuropharmacology 2013; 71:1-9. [PMID: 23541720 DOI: 10.1016/j.neuropharm.2013.03.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Revised: 02/22/2013] [Accepted: 03/04/2013] [Indexed: 10/27/2022]
Abstract
Nitric oxide modulates pain development. However, there is no evidence on the effect of nitroxyl (HNO/NO⁻) in nociception. Therefore, we addressed whether nitroxyl inhibits inflammatory hyperalgesia and its mechanism using the nitroxyl donor Angeli's salt (AS; Na₂N₂O₃). Mechanical hyperalgesia was evaluated using a modified Randall and Selitto method in rats, cytokine production by ELISA and nitroxyl was determined by confocal microscopy in DAF (a cell permeable reagent that is converted into a fluorescent molecule by nitrogen oxides)-treated dorsal root ganglia neurons in culture. Local pre-treatment with AS (17-450 μg/paw, 30 min) inhibited the carrageenin-induced mechanical hyperalgesia in a dose- and time-dependent manner with maximum inhibition of 97%. AS also inhibited carrageenin-induced cytokine production. AS inhibited the hyperalgesia induced by other inflammatory stimuli including lipopolysaccharide, tumor necrosis factor-α, interleukin-1β and prostaglandin E2. Furthermore, the analgesic effect of AS was prevented by treatment with ODQ (a soluble guanylate cyclase inhibitor), KT5823 (a protein kinase G [PKG] inhibitor) or glybenclamide (an ATP-sensitive K⁺ channel blocker), but not with naloxone (an opioid receptor antagonist). AS induced concentration-dependent increase in fluorescence intensity of DAF-treated neurons in a l-cysteine (nitroxyl scavenger) sensitive manner. l-cysteine did not affect the NO⁺ donor S-Nitroso-N-acetyl-DL- penicillamine (SNAP)-induced anti-hyperalgesia or fluorescence of DAF-treated neurons. This is the first study to demonstrate that nitroxyl inhibits inflammatory hyperalgesia by reducing cytokine production and activating the cGMP/PKG/ATP-sensitive K⁺ channel signaling pathway in vivo.
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Affiliation(s)
- Ana C Zarpelon
- Departamento de Patologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid PR 445, Km 380 Cx. Postal 6001, 86051-990 Londrina, Parana, Brazil
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Nitric oxide generated by the compound RuBPY promotes the vascular smooth cell membrane hyperpolarization. Eur J Pharm Sci 2013; 48:604-10. [DOI: 10.1016/j.ejps.2013.01.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 01/07/2013] [Accepted: 01/07/2013] [Indexed: 11/20/2022]
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Donzelli S, Fischer G, King BS, Niemann C, DuMond JF, Heeren J, Wieboldt H, Baldus S, Gerloff C, Eschenhagen T, Carrier L, Böger RH, Espey MG. Pharmacological characterization of 1-nitrosocyclohexyl acetate, a long-acting nitroxyl donor that shows vasorelaxant and antiaggregatory effects. J Pharmacol Exp Ther 2012; 344:339-47. [PMID: 23211362 DOI: 10.1124/jpet.112.199836] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Nitroxyl (HNO) donors have potential benefit in the treatment of heart failure and other cardiovascular diseases. 1-Nitrosocyclohexyl acetate (NCA), a new HNO donor, in contrast to the classic HNO donors Angeli's salt and isopropylamine NONOate, predominantly releases HNO and has a longer half-life. This study investigated the vasodilatative properties of NCA in isolated aortic rings and human platelets and its mechanism of action. NCA was applied on aortic rings isolated from wild-type mice and apolipoprotein E-deficient mice and in endothelial-denuded aortae. The mechanism of action of HNO was examined by applying NCA in the absence and presence of the HNO scavenger glutathione (GSH) and inhibitors of soluble guanylyl cyclase (sGC), adenylyl cyclase (AC), calcitonin gene-related peptide receptor (CGRP), and K(+) channels. NCA induced a concentration-dependent relaxation (EC(50), 4.4 µM). This response did not differ between all groups, indicating an endothelium-independent relaxation effect. The concentration-response was markedly decreased in the presence of excess GSH; the nitric oxide scavenger 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide had no effect. Inhibitors of sGC, CGRP, and voltage-dependent K(+) channels each significantly impaired the vasodilator response to NCA. In contrast, inhibitors of AC, ATP-sensitive K(+) channels, or high-conductance Ca(2+)-activated K(+) channels did not change the effects of NCA. NCA significantly reduced contractile response and platelet aggregation mediated by the thromboxane A(2) mimetic 9,11-dideoxy-11α,9α-epoxymethanoprostaglandin F(2)(α) in a cGMP-dependent manner. In summary, NCA shows vasoprotective effects and may have a promising profile as a therapeutic agent in vascular dysfunction, warranting further evaluation.
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Affiliation(s)
- Sonia Donzelli
- Department of Experimental Pharmacology and Toxicology, University Medical Center Hamburg-Eppendorf., Martinistr. 52, D-20246 Hamburg, Germany.
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Hirai DM, Copp SW, Ferguson SK, Holdsworth CT, Musch TI, Poole DC. The NO donor sodium nitroprusside: evaluation of skeletal muscle vascular and metabolic dysfunction. Microvasc Res 2012; 85:104-11. [PMID: 23174313 DOI: 10.1016/j.mvr.2012.11.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Revised: 11/09/2012] [Accepted: 11/12/2012] [Indexed: 12/31/2022]
Abstract
The nitric oxide (NO) donor sodium nitroprusside (SNP) may promote cyanide-induced toxicity and systemic and/or local responses approaching maximal vasodilation. The hypotheses were tested that SNP superfusion of the rat spinotrapezius muscle exerts 1) residual impairments in resting and contracting blood flow, oxygen utilization (VO(2)) and microvascular O(2) pressure (PO(2)mv); and 2) marked hypotension and elevation in resting PO(2)mv. Two superfusion protocols were performed: 1) Krebs-Henseleit (control 1), SNP (300 μM; a dose used commonly in superfusion studies) and Krebs-Henseleit (control 2), in this order; 2) 300 and 1200 μM SNP in random order. Spinotrapezius muscle blood flow (radiolabeled microspheres), VO(2) (Fick calculation) and PO(2)mv (phosphorescence quenching) were determined at rest and during electrically-induced (1 Hz) contractions. There were no differences in spinotrapezius blood flow, VO(2) or PO(2)mv at rest and during contractions pre- and post-SNP condition (control 1 and control 2; p>0.05 for all). With regard to dosing, SNP produced a graded elevation in resting PO(2)mv (p<0.05) with a reduction in mean arterial pressure only at the higher concentration (p<0.05). Contrary to our hypotheses, skeletal muscle superfusion with the NO donor SNP (300 μM) improved microvascular oxygenation during the transition from rest to contractions (PO(2)mv kinetics) without precipitating residual impairment of muscle hemodynamic or metabolic control or compromising systemic hemodynamics. These data suggest that SNP superfusion (300 μM) constitutes a valid and important tool for assessing the functional roles of NO in resting and contracting skeletal muscle function without incurring residual alterations consistent with cyanide accumulation and poisoning.
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Affiliation(s)
- Daniel M Hirai
- Department of Anatomy and Physiology, Kansas State University, Manhattan, KS, USA
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Leo CH, Joshi A, Hart JL, Woodman OL. Endothelium-dependent nitroxyl-mediated relaxation is resistant to superoxide anion scavenging and preserved in diabetic rat aorta. Pharmacol Res 2012; 66:383-91. [PMID: 22898326 DOI: 10.1016/j.phrs.2012.07.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2012] [Revised: 07/30/2012] [Accepted: 07/30/2012] [Indexed: 10/28/2022]
Abstract
The aim of the study was to investigate whether diabetes-induced oxidant stress affects the contribution of nitroxyl (HNO) to endothelium-dependent relaxation in the rat aorta. Organ bath techniques were employed to determine vascular function of rat aorta. Pharmacological tools (3mM l-cysteine, 5mM 4-aminopyridine (4-AP), 200μM carboxy-PTIO and 100μM hydroxocobalamin, HXC) were used to distinguish between NO and HNO-mediated relaxation. Superoxide anion levels were determined by lucigenin-enhanced chemiluminescence. In the diabetic aorta, where there is increased superoxide anion production, responses to the endothelium-dependent relaxant ACh were not affected when the contribution of NO to relaxation was abolished by either HXC or carboxy-PTIO, indicating a preserved HNO-mediated relaxation. Conversely, when the contribution of HNO was inhibited with l-cysteine or 4-AP, the sensitivity and maximum relaxation to ACh was significantly decreased, suggesting that the contribution of NO was impaired by diabetes. Furthermore, whereas HNO appears to be derived from eNOS in normal aorta, in the diabetic aorta it may also arise from an eNOS-independent source, perhaps derived from nitrosothiol stores. Similarly, exposure to the superoxide anion generator, pyrogallol (100μM) significantly reduced the sensitivity to the NO donor, DEANONOate and ACh-induced NO-mediated relaxation but had no effect on responses to the HNO donor, Angeli's salt and ACh-induced HNO-mediated relaxation in the rat aorta. These findings demonstrate that NO-mediated relaxation is impaired during oxidative stress but the HNO component of relaxation is preserved under those conditions.
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Affiliation(s)
- C H Leo
- School of Medical Sciences, Health Innovations Research Institute, RMIT University, Bundoora, Victoria, Australia
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Triggle CR, Samuel SM, Ravishankar S, Marei I, Arunachalam G, Ding H. The endothelium: influencing vascular smooth muscle in many ways. Can J Physiol Pharmacol 2012; 90:713-38. [PMID: 22625870 DOI: 10.1139/y2012-073] [Citation(s) in RCA: 157] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The endothelium, although only a single layer of cells lining the vascular and lymphatic systems, contributes in multiple ways to vascular homeostasis. Subsequent to the 1980 report by Robert Furchgott and John Zawadzki, there has been a phenomenal increase in our knowledge concerning the signalling molecules and pathways that regulate endothelial - vascular smooth muscle communication. It is now recognised that the endothelium is not only an important source of nitric oxide (NO), but also numerous other signalling molecules, including the putative endothelium-derived hyperpolarizing factor (EDHF), prostacyclin (PGI(2)), and hydrogen peroxide (H(2)O(2)), which have both vasodilator and vasoconstrictor properties. In addition, the endothelium, either via transferred chemical mediators, such as NO and PGI(2), and (or) low-resistance electrical coupling through myoendothelial gap junctions, modulates flow-mediated vasodilatation as well as influencing mitogenic activity, platelet aggregation, and neutrophil adhesion. Disruption of endothelial function is an early indicator of the development of vascular disease, and thus an important area for further research and identification of potentially new therapeutic targets. This review focuses on the signalling pathways that regulate endothelial - vascular smooth muscle communication and the mechanisms that initiate endothelial dysfunction, particularly with respect to diabetic vascular disease.
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Affiliation(s)
- Chris R Triggle
- Department of Pharmacology, Weill Cornell Medical College in Qatar, P.O. Box 24144, Education City, Doha, Qatar.
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