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Dos Santos Carvalho Schiavon M, de Moraes LHO, de Moraes TF, Buzinari TC, Neto JCRM, Rodrigues GJ. Chronic red laser treatment induces hypotensive effect in two-kidney one-clip model of renovascular hypertension in rat. Lasers Med Sci 2023; 38:252. [PMID: 37919476 DOI: 10.1007/s10103-023-03918-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 10/22/2023] [Indexed: 11/04/2023]
Abstract
To evaluate whether the chronic effect of photobiomodulation therapy (PBM) on systolic arterial pressure (SAP) from two kidneys one clip (2 K-1C) hypertension animal models can cause a hypotensive effect. Serum levels of nitric oxide were also analyzed and the assessment of lipid peroxidation of the thoracic aorta artery. Male Wistar rats were used. Hypertensive animals (2 K-1C) with Systolic arterial pressure (SAP) greater than or equal to 160 mmHg were used. Systolic arterial pressure (SAP) was determined by the tail plethysmography technique. Normotensive (2 K) and hypertensive (2 K-1C) rats were treated to PBM for 4 weeks using a laser whose irradiation parameters were: red wavelength (λ) = 660 nm: operating continuously; 56 s per point (3 points) spot size = 0.0295 cm2; average optical power of 100 mW; energy of 5.6 J per point; irradiance of 3.40 W/cm2; fluency of 190 J/cm2 per point. The application was on the animals tails, at 3 different points simultaneously, in contact with the skin. To assess serum nitrite and nitrate (NOx) levels, blood collection was performed after chronic PBM treatment, 24 h after the last laser application. The evaluation of the lipid peroxidation of the thoracic aorta artery was performed by measuring the concentration of hydroperoxide by the FOX method. Chronic photobiomodulation therapy (PBM) by red laser (660 nm) can induce a hypotensive effect in 64% of 2 K-1C hypertensive animals, which we say responsive animals. There was no difference in serum NO levels 24 h after the last red laser application, between treated and non-treated groups. Aortic rings from 2 K-1C hypertensive animals present a higher lipid peroxidation. The chronic PBM treatment by red laser decreased aortic rings lipid peroxidation in hypertensive responsive groups, compared to control. our results indicate that chronic PBM made by red laser has an important hypotensive effect in renovascular hypertensive models, by a mechanism that involves decrease in oxidative stress from vascular beds.
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Affiliation(s)
| | | | - Thiago Francisco de Moraes
- Departamento de Ciências Fisiológicas, Universidade Federal de São Carlos (UFSCar), São Carlos, SP, CEP 13565-905, Brazil
| | - Tereza Cristina Buzinari
- Departamento de Ciências Fisiológicas, Universidade Federal de São Carlos (UFSCar), São Carlos, SP, CEP 13565-905, Brazil
| | - José Carlos Rapozo Mazulo Neto
- Departamento de Ciências Fisiológicas, Universidade Federal de São Carlos (UFSCar), São Carlos, SP, CEP 13565-905, Brazil
| | - Gerson Jhonatan Rodrigues
- Departamento de Ciências Fisiológicas, Universidade Federal de São Carlos (UFSCar), São Carlos, SP, CEP 13565-905, Brazil
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2
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Silva AM, Negri LB, Biazzotto JC, de Paula Machado S, Santos JD, Batista JFN, Maia PIS, Deflon VM, Bendhack LM, Hamblin MR, da Silva RS. Influence of nitro ruthenium isomerization on photochemically induced nitric oxide release: Vasorelaxant activities. J Inorg Biochem 2023; 243:112166. [PMID: 36947899 DOI: 10.1016/j.jinorgbio.2023.112166] [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: 08/25/2022] [Revised: 01/26/2023] [Accepted: 02/20/2023] [Indexed: 03/06/2023]
Abstract
We have synthesized cis-[Ru(bpy)2(NO2-κN)Ln-](n-1) and cis-[Ru(bpy)2(NO2-κO)L n-](n-1) (bpy = 2,2'-bipyridine; k = indication of the coordinated center to Ruthenium; L = pyridine type ligand) by reacting cis-[Ru(bpy)2(H2O)Ln-](n-2) with sodium nitrite or conducting basic cis-[Ru(bpy)2NO(Ln-)](n-3) hydrolysis. Photolysis at the metal-ligand charge transfer band (MLCT) of the isomers yielded nitric oxide (NO) as determined by NO measurement. The NO photorelease rates obtained upon 447 nm laser irradiation of the ruthenium complexes showed that cis-[Ru(bpy)2(NO2-κO)Ln-](n-1) released NO three times faster than cis-[Ru(bpy)2(NO2-κN)Ln-](n-1). We investigated endothelium-dependent vasodilation induced by cis-[Ru(bpy)2(4-pic)(NO2-κN)]+ and cis-[Ru(bpy)2(4-pic)(NO2-κO)]+ (4-pic = 4-picoline) in isolated 3 mm aortic rings precontracted with L-phenylephrine. Maximum vasodilation was achieved under 447 nm laser irradiation of 0.5 μMol.L-1 ruthenium complexes for 100 s.
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Affiliation(s)
- Alexia Marques Silva
- Departamento de Ciências Biomoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil; Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, United States.
| | - Laísa Bonafim Negri
- Departamento de Ciências Biomoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil; Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA.
| | - Juliana Cristina Biazzotto
- Departamento de Ciências Biomoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
| | - Sergio de Paula Machado
- Instituto de Química, Universidade Federal do Rio de Janeiro, 21941-590 Rio de Janeiro, RJ, Brazil.
| | - Jeimison Duarte Santos
- Departamento de Ciências Biomoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
| | - Jorge Fernandes Nasser Batista
- Departamento de Ciências Biomoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
| | - Pedro Ivo S Maia
- Departamento de Química, Instituto de Ciências Exatas, Naturais e Educação, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brazil.
| | - Victor Marcelo Deflon
- Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos, SP, Brazil.
| | - Lusiane M Bendhack
- Departamento de Ciências Biomoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
| | - Michael R Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein 2028, South Africa.
| | - Roberto S da Silva
- Departamento de Ciências Biomoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil; Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA.
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3
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An Evidence-Based Review of Application Devices for Nitric Oxide Concentration Determination from Exhaled Air in the Diagnosis of Inflammation and Treatment Monitoring. Molecules 2022; 27:molecules27134279. [PMID: 35807523 PMCID: PMC9268246 DOI: 10.3390/molecules27134279] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 06/30/2022] [Accepted: 07/02/2022] [Indexed: 02/01/2023] Open
Abstract
The measurement of nitric oxide (NO) in exhaled air is used in diagnostics and monitoring the pathologies not only in the respiratory system but also in the oral cavity. It has shown a huge increase in its level in asthma and diseases of the oral cavity. It seems reasonable to undertake research on the impact of inflammation on the level of NO in exhaled air. The aim of the study is to make an evidence-based review of the application of NO levels in exhaled air in the diagnosis of inflammation and treatment monitoring on the basis of selected measuring devices. Methods and Results: This paper presents an example of the application of NO measurement in exhaled air in individual human systems. Selected measuring devices, their non-invasiveness, and their advantages are described. Discussion: The usefulness of this diagnostic method in pathologies of the oral cavity was noted. Conclusions: Measuring the level of NO in exhaled air seems to be a useful diagnostic method.
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Pereira AC, Araújo AV, Paulo M, da Silva RS, Bendhack LM. RuBPY decreases intracellular calcium by decreasing influx and increasing storage. Clin Exp Pharmacol Physiol 2022; 49:759-766. [PMID: 35527704 DOI: 10.1111/1440-1681.13652] [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: 10/07/2021] [Revised: 04/25/2022] [Accepted: 04/27/2022] [Indexed: 11/30/2022]
Abstract
RuBPY is a ruthenium complex NO donor that presents a nitrite in its moiety and has been shown to induce vasodilation in various arteries, as well as arterial pressure reduction with no changes in heart rate. Since vascular tone is highly dependent on the cytosolic calcium concentration ([Ca2+ ]c), the current study aimed to investigate the effects of RuBPY on the intracellular mobilization of calcium stores of rat aortic vascular smooth muscle cells. Vascular reactivity experiments were performed in isolated aortic rings that were contracted with a high concentration of KCl or phenylephrine (Phe). Moreover, primary cultured vascular smooth muscle cells were used to measure [Ca2+ ]c by confocal microscopy. The NO donor RuBPY decreased the [Ca2+ ]c and reduced KCl and Phe -induced contractile responses. The selective inhibitor of sarco-endoplasmic Ca-ATPase (SERCA) with thapsigargin impaired the effect of RuBPY on Phe -induced contractile response. RuBPY also reduced caffeine-induced contraction, and the contraction dependent on the capacitive Ca2+ influx. Therefore, our results suggest that NO released from RuBPY decreased [Ca2+ ]c by calcium influx blockade, and activation of guanylyl-cyclase-cGMP-GK pathway. These results indicate that RuBPY increases Ca2+ storage in the sarcoplasmic reticulum by SERCA activation, and also by capacitive Ca2+ influx inhibition, which is dependent on the intracellular release of nitric oxide from this compound. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- A C Pereira
- Faculty of Medicine of Itajubá (FMIt), Itajubá, MG, Brazil
| | - A V Araújo
- Department of Public Health, Academic Center of Vitória (CAV), Federal University of Pernambuco (UFPE), Vitória de Santo Antão, PE, Brazil
| | - M Paulo
- Faculty of Pharmaceutical Sciences of Ribeirão Preto - University of São Paulo, Ribeirão Preto, SP, Brazil
| | - R S da Silva
- Faculty of Pharmaceutical Sciences of Ribeirão Preto - University of São Paulo, Ribeirão Preto, SP, Brazil
| | - L M Bendhack
- Faculty of Pharmaceutical Sciences of Ribeirão Preto - University of São Paulo, Ribeirão Preto, SP, Brazil
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Wyszyńska M, Rosak P, Czelakowska A, Białożyt-Bujak E, Kasperski J, Łopaciński M, Al Khatib N, Skucha-Nowak M. Pilot Study of Use of Nitric Oxide in Monitoring Multiple Dental Foci in Oral Cavity—A Case Report. Healthcare (Basel) 2022; 10:healthcare10020195. [PMID: 35206810 PMCID: PMC8872459 DOI: 10.3390/healthcare10020195] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 01/17/2022] [Accepted: 01/18/2022] [Indexed: 01/25/2023] Open
Abstract
Background: The most common cause of implant loss and deteriorating restoration aesthetics is infection and chronic inflammation of the tissues around the implants. Inflammation in the oral cavity, confirmed by clinical and histopathological examination and determination of exhaled nitric oxide, is a situation which may cause the complications on the whole human body. Elimination of the patology in the oral cavity in some cases is the only resonable treatment. The aims and objectives of our work is to present a gradual treatment of advanced infalmmation and present huge reduction stamp of inflammation measured with marker nitric oxide (NO) in exhaled air. Materials and Methods: Simple treatment containing elimantion of pathology in the oral cavity was conducted. Patient that came to the dental practice suffered from the inflammation caused by lack of proper hygiene. First aid in this situation was to eliminate the inflammation which may affect negatively for general health. At first visit full hygienization was performed, at the second visit roots of abutment teeth and implants were removed under local anesthesia along with cystic changes. Results: The hygiene precedures and extraction of the unsteady inflammationprosthetic restorations significantly decreased the level of NO in exhaled air. Conclusions: During the examination of the patient coming to the dental practice great attention should be paid to the coexistence of pathologies related to the oral cavity. Omission of a dental examination and possible elimination of odontogenic foci may affect the implication of the results of general diagnostics and subsequent treatment. Measuring the level of NO on exhaled air seems to be useful diagnostic method.
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Affiliation(s)
- Magdalena Wyszyńska
- Department of Dental Materials, Division of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 15 Poniatowskiego Street, 40-055 Katowice, Poland;
- Correspondence:
| | - Przemysław Rosak
- Specialist Dental Practice Przemysław Rosak, 13 Piłsudskiego Street, 41-300 Dąbrowa Górnicza, Poland;
| | - Aleksandra Czelakowska
- Department of Dental Prosthetics, Division of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 15 Poniatowskiego Street, 40-055 Katowice, Poland; (A.C.); (J.K.)
| | - Ewa Białożyt-Bujak
- Department of Dental Materials, Division of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 15 Poniatowskiego Street, 40-055 Katowice, Poland;
| | - Jacek Kasperski
- Department of Dental Prosthetics, Division of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 15 Poniatowskiego Street, 40-055 Katowice, Poland; (A.C.); (J.K.)
| | - Maciej Łopaciński
- Department of Periodontal Diseases and Oral Mucosa Diseases, Division of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 15 Poniatowskiego Street, 40-055 Katowice, Poland;
| | - Nour Al Khatib
- Student of 4th Year Dentistry Program, Student Scientific Society in Department/Institute of Prosthetic Dentistry and Dental Material Sciences, Division of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 15 Poniatowskiego Street, 40-055 Katowice, Poland;
| | - Małgorzata Skucha-Nowak
- Department of Dental Propedeutics, Division of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 15 Poniatowskiego Street, 40-055 Katowice, Poland;
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de Oliveira AS, Llanes LC, Nunes RJ, Nucci-Martins C, de Souza AS, Palomino-Salcedo DL, Dávila-Rodríguez MJ, Ferreira LLG, Santos ARS, Andricopulo AD. Antioxidant Activity, Molecular Docking, Quantum Studies and In Vivo Antinociceptive Activity of Sulfonamides Derived From Carvacrol. Front Pharmacol 2021; 12:788850. [PMID: 34887769 PMCID: PMC8650121 DOI: 10.3389/fphar.2021.788850] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Accepted: 11/05/2021] [Indexed: 12/15/2022] Open
Abstract
The synthesis and antioxidant, antinociceptive and antiedematogenic activities of sulfonamides derived from carvacrol-a druglike natural product-are reported. The compounds showed promising antioxidant activity, and sulfonamide derived from morpholine (S1) demonstrated excellent antinociceptive and antiedematogenic activities, with no sedation or motor impairment. The mechanism that underlies the carvacrol and derived sulfonamides' relieving effects on pain has not yet been fully elucidated, however, this study shows that the antinociceptive activity can be partially mediated by the antagonism of glutamatergic signaling. Compound S1 presented promising efficacy and was predicted to have an appropriate medicinal chemistry profile. Thus, derivative S1 is an interesting starting point for the design of new leads for the treatment of pain and associated inflammation and prooxidative conditions.
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Affiliation(s)
- Aldo S de Oliveira
- Department of Exact Sciences and Education, Federal University of Santa Catarina-UFSC, Blumenau, Brazil.,Laboratory of Medicinal and Computational Chemistry, Institute of Physics of São Carlos, University of São Paulo-USP, São Carlos, Brazil
| | - Luana C Llanes
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA, United States
| | - Ricardo J Nunes
- Departament of Chemistry, Federal University of Santa Catarina-UFSC, Florianópolis, Brazil
| | - Catharina Nucci-Martins
- Department of Physiological Sciences, Center of Biological Sciences, Federal University of Santa Catarina-UFSC, Florianópolis, Brazil.,Department of Structural and Functional Biology, Institute of Biology, University of Campinas-UNICAMP, Campinas, Brazil
| | - Anacleto S de Souza
- Laboratory of Medicinal and Computational Chemistry, Institute of Physics of São Carlos, University of São Paulo-USP, São Carlos, Brazil
| | - David L Palomino-Salcedo
- Laboratory of Medicinal and Computational Chemistry, Institute of Physics of São Carlos, University of São Paulo-USP, São Carlos, Brazil
| | | | - Leonardo L G Ferreira
- Laboratory of Medicinal and Computational Chemistry, Institute of Physics of São Carlos, University of São Paulo-USP, São Carlos, Brazil
| | - Adair R S Santos
- Department of Physiological Sciences, Center of Biological Sciences, Federal University of Santa Catarina-UFSC, Florianópolis, Brazil
| | - Adriano D Andricopulo
- Laboratory of Medicinal and Computational Chemistry, Institute of Physics of São Carlos, University of São Paulo-USP, São Carlos, Brazil
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Tanaka S, Ito S, Shimamoto C, Matsumura H, Inui T, Marunaka Y, Nakahari T. Nitric oxide synthesis stimulated by arachidonic acid accumulation via PPARα in acetylcholine-stimulated gastric mucous cells. Exp Physiol 2021; 106:1939-1949. [PMID: 34216172 DOI: 10.1113/ep089517] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 06/28/2021] [Indexed: 12/13/2022]
Abstract
NEW FINDINGS What is the central question of this study? Arachidonic acid (AA) stimulates NO production in antral mucous cells without any increase in [Ca2+ ]i . Given that the intracellular AA concentration is too low to measure, the relationship between AA accumulation and NO production remains uncertain. Is AA accumulation a key step for NO production? What is the main finding and its importance? We demonstrated that AA accumulation is a key step for NO production. The amount of AA released could be measured using fluorescence-HPLC. The intracellular AA concentration was maintained at < 1 μM. Nitric oxide is produced by AA accumulation in antral mucous cells, not as a direct effect of [Ca2+ ]i . ABSTRACT In the present study, we demonstrate that NO production is stimulated by an accumulation of arachidonic acid (AA) mediated via peroxisome proliferation-activated receptor α (PPARα) and that the NO produced enhances Ca2+ -regulated exocytosis in ACh-stimulated antral mucous cells. The amount of AA released from the antral mucosa, measured by fluorescence high-performance liquid chromatography (F-HPLC), was increased by addition of ionomycin (10 μM) or ACh, suggesting that AA accumulation is stimulated by an increase in [Ca2+ ]i . The AA production was inhibited by an inhibitor of cytosolic phospholipase A2 (cPLA2-inhα). GW6471 (a PPARα inhibitor) and cPLA2-inhα inhibited NO synthesis stimulated by ACh. Moreover, indomethacin, an inhibitor of cyclooxygenase, stimulated AA accumulation and NO production. However, acetylsalicylic acid did not stimulate AA production and NO synthesis. An analogue of AA (AACOCF3) alone stimulated NO synthesis, which was inhibited by GW6471. In antral mucous cells, indomethacin enhanced Ca2+ -regulated exocytosis by increasing NO via PPARα, and the enhancement was abolished by GW6471 and cPLA2-inhα. Thus, AA produced via PLA2 activation is the key step for NO synthesis in ACh-stimulated antral mucous cells and plays important roles in maintaining antral mucous secretion, especially in Ca2+ -regulated exocytosis.
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Affiliation(s)
- Saori Tanaka
- Research Unit for Epithelial Physiology, Research Organization of Science and Technology, Biwako Kusatsu Campus, Ritsumeikan University, Kusatsu, Japan.,Laboratory of Pharmacotherapy, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Takatsuki, Japan
| | - Shigenori Ito
- Department of Chemistry, Faculty of Medicine, Osaka Medical and Pharmaceutical University, Takatsuki, Japan
| | - Chikao Shimamoto
- Laboratory of Pharmacotherapy, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Takatsuki, Japan
| | - Hitoshi Matsumura
- Laboratory of Pharmacotherapy, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Takatsuki, Japan
| | - Toshio Inui
- Research Unit for Epithelial Physiology, Research Organization of Science and Technology, Biwako Kusatsu Campus, Ritsumeikan University, Kusatsu, Japan.,Saisei Mirai Clinics, Moriguchi, Japan
| | - Yoshinori Marunaka
- Research Unit for Epithelial Physiology, Research Organization of Science and Technology, Biwako Kusatsu Campus, Ritsumeikan University, Kusatsu, Japan.,Medical Research Institute, Kyoto Industrial Health Association, Kyoto, Japan.,Department of Molecular Cell Physiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takashi Nakahari
- Research Unit for Epithelial Physiology, Research Organization of Science and Technology, Biwako Kusatsu Campus, Ritsumeikan University, Kusatsu, Japan
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Measurement of the Level of Nitric Oxide in Exhaled Air in Patients Using Acrylic Complete Dentures and with Oral Pathologies. COATINGS 2021. [DOI: 10.3390/coatings11020169] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The measurement of nitric oxide (NO) in exhaled air is used in diagnostics and monitoring of the pathologies in the respiratory system but also in the oral cavity. Researchers have shown a huge increase of its level in asthma and diseases in the oral cavity. It seems reasonable to research the impact of pathologies in the oral cavity on the level of NO in exhaled air. The purpose of this study was to determine the impact of inflammation in the oral cavity (according to the material of dentures) on the level of nitric oxide in exhaled air. Three groups of patients were examined in this study. The hygiene of acrylic dentures, hard tissues, periodontal tissues, hygiene of the oral cavity, and level of NO in exhaled air were examined. Prosthetic stomatitis, denture plaque, tooth decay, poor sanitation and periodontitis increase levels of NO.
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9
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Paulo M, Costa DEFR, Bonaventura D, Lunardi CN, Bendhack LM. Nitric Oxide Donors as Potential Drugs for the Treatment of Vascular Diseases Due to Endothelium Dysfunction. Curr Pharm Des 2021; 26:3748-3759. [PMID: 32427079 DOI: 10.2174/1381612826666200519114442] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 04/07/2020] [Indexed: 11/22/2022]
Abstract
Endothelial dysfunction and consequent vasoconstriction are a common condition in patients with hypertension and other cardiovascular diseases. Endothelial cells produce and release vasodilator substances that play a pivotal role in normal vascular tone. The mechanisms underlying endothelial dysfunction are multifactorial. However, enhanced reactive oxygen species (ROS) production and consequent vasoconstriction instead of endothelium-derived relaxant generation and consequent vasodilatation contribute to this dysfunction considerably. The main targets of the drugs that are currently used to treat vascular diseases concerning enzyme activities and protein functions that are impaired by endothelial nitric oxide synthase (eNOS) uncoupling and ROS production. Nitric oxide (NO) bioavailability can decrease due to deficient NO production by eNOS and/or NO release to vascular smooth muscle cells, which impairs endothelial function. Considering the NO cellular mechanisms, tackling the issue of eNOS uncoupling could avoid endothelial dysfunction: provision of the enzyme cofactor tetrahydrobiopterin (BH4) should elicit NO release from NO donors, to activate soluble guanylyl cyclase. This should increase cyclic guanosine-monophosphate (cGMP) generation and inhibit phosphodiesterases (especially PDE5) that selectively degrade cGMP. Consequently, protein kinase-G should be activated, and K+ channels should be phosphorylated and activated, which is crucial for cell membrane hyperpolarization and vasodilation and/or inhibition of ROS production. The present review summarizes the current concepts about the vascular cellular mechanisms that underlie endothelial dysfunction and which could be the target of drugs for the treatment of patients with cardiovascular disease.
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Affiliation(s)
- Michele Paulo
- Department Physics and Chemistry, Faculty of Pharmaceutical Sciences of Ribeirao Preto- University of Sao Paulo Av. Do Cafe SN, Brazil
| | - Daniela E F R Costa
- Department of Pharmacology, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Daniella Bonaventura
- Department of Pharmacology, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Claure N Lunardi
- Laboratory of Photochemistry and Nanobiotechnology, University of Brasilia, Brasilia, Brazil
| | - Lusiane M Bendhack
- Department Physics and Chemistry, Faculty of Pharmaceutical Sciences of Ribeirao Preto- University of Sao Paulo Av. Do Cafe SN, Brazil
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10
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Action Mechanism of Rosella ( Hibiscus sabdariffa L.) Used to Treat Metabolic Syndrome in Elderly Women. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:5351318. [PMID: 33005201 PMCID: PMC7509568 DOI: 10.1155/2020/5351318] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 08/21/2020] [Accepted: 09/06/2020] [Indexed: 02/05/2023]
Abstract
Objective Rosella is a safe medicinal herb used by people in Indonesia. They believe that rosella is effective in controlling metabolic syndrome, working with antihypertension, antidiabetic, antidyslipidemia and antiobesity effects. The purpose of this study was to determine the effect of rosella in controlling metabolic syndrome through the secretion of blood nitric oxide (NO) and the cortisol pathway. Methods This study was a quasiexperimental, pretest-posttest with control group design. The total subjects were 18 people, women, and the elderly. Subjects were selected randomly into 2 groups: control group (n = 8) and treatment group (n = 8). The treatment was rosella tea, a dose of 2 grams, duration 2 times a day, given in the morning (08.00–8.30 a.m.) and evening (06.30–7.00 p.m.) after meals for 21 days. Examination of NO and cortisol levels was carried out using the enzyme-linked immunosorbent assay (ELISA) method. Results There was a significant decrease in bodyweight (BW) (p = 0.021), systolic blood pressure (SBP) (p = 0.001), diastolic blood pressure (DBP) (p = 0.049), glucose preprandial (FPG) (p = 0.014), total cholesterol (CT) (p = 0.001), triglycerides (TGs) (p = 0.014), high-density lipoprotein (HDL) (p = 0.001), and low-density lipoprotein (LDL) (p = 0.010) after consuming rosella. NO levels were significantly increased (p = 0.012), whereas cortisol levels decreased significantly (p = 0.008) after therapy with rosella tea in elderly women. Conclusion Rosella has shown evidence to control and lower blood pressure, blood glucose, lipid profile, and cortisol in the elderly with metabolic syndrome. Rosella is a traditional medicine that has the potential to be developed as a therapy for metabolic syndrome patients.
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Nemova EF, Cherkasova OP, Nikolaev NA, Dultseva GG. A Study on Molecular Mechanisms of Terahertz Radiation Interaction with Biopolymers Based on the Example of Bovine Serum Albumin. Biophysics (Nagoya-shi) 2020. [DOI: 10.1134/s000635092003015x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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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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Shinbara H, Okubo M, Kimura K, Mizunuma K, Sumiya E. Contributions of Nitric Oxide and Prostaglandins to the Local Increase in Muscle Blood Flow following Manual Acupuncture in Rats. Acupunct Med 2018; 33:65-71. [DOI: 10.1136/acupmed-2014-010634] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Objective To investigate the contributions of nitric oxide (NO) and prostaglandins (PGs) to the increase in local muscle blood flow (MBF) observed following manual acupuncture (MA). Methods Male Sprague-Dawley rats (n=112; 250–310 g) were injected intraperitoneally with a non-selective NO synthase inhibitor (NG-nitro-L-arginine methyl ester hydrochloride: L-NAME; 10, 50 or 500 mg/kg), a non-selective cyclo-oxygenase inhibitor (indomethacin; 10, 50 or 500 mg/kg), a combination of L-NAME and indomethacin (500 mg/kg each) or saline only under urethane anaesthesia (1.2 g/kg). We used the sparrow pecking technique for 1 min with a stainless steel acupuncture needle (0.20×30 mm) as the acupuncture stimulation method. The stimulus point was on the right tibialis anterior muscle. 51Chromium-labelled microspheres were used for MBF measurement. Results MA increased MBF in the saline-injected group (p<0.001). This increase was partially inhibited by L-NAME in a dose-dependent manner (p>0.05, p<0.05 and p<0.001 for 10, 50 and 500 mg/kg, respectively). On the other hand, indomethacin did not suppress the increase (p>0.05 each for 10, 50 and 500 mg/kg). No significant difference was observed between the inhibitory effects of combined administration of L-NAME and indomethacin and single administration of L-NAME (p>0.05). Conclusions These results suggest that NO is a major factor in the MA-induced increase in MBF, while PGs do not contribute significantly to this increase. As complete inhibition was not achieved by administration of L-NAME±indomethacin, it appears that non-NO and non-PG vasodilators are additionally involved.
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Affiliation(s)
- Hisashi Shinbara
- Department of Basic Acupuncture and Moxibustion, Meiji University of Integrative Medicine, Nantan-shi, Kyoto, Japan
| | - Masamichi Okubo
- Department of Anatomy and Neuroscience, Hyogo College of Medicine, Nishinomiya-shi, Hyogo, Japan
| | - Keisaku Kimura
- Department of Health Promoting and Geriatric Acupuncture and Moxibustion, Meiji University of Integrative Medicine, Nantan-shi, Kyoto, Japan
| | - Kunio Mizunuma
- Department of Health Promoting and Geriatric Acupuncture and Moxibustion, Meiji University of Integrative Medicine, Nantan-shi, Kyoto, Japan
| | - Eiji Sumiya
- Department of Basic Acupuncture and Moxibustion, Meiji University of Integrative Medicine, Nantan-shi, Kyoto, Japan
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Feng M, Zhao J, Yu P, Wang J. Linear and Nonlinear Infrared Spectroscopies Reveal Detailed Solute-Solvent Dynamic Interactions of a Nitrosyl Ruthenium Complex in Solution. J Phys Chem B 2018; 122:9225-9235. [PMID: 30200757 DOI: 10.1021/acs.jpcb.8b07247] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In this work, the solvation of a nitrosyl ruthenium complex, [(CH3)4N][RuCl3(qn)(NO)] (with qn = deprotonated 8-hydroxyquinoline), which is a potential NO-releasing molecule in the bio-environment, was studied in two bio-friendly solvents, namely deuterated dimethyl sulfoxide (dDMSO) and water (D2O). A blue-shifted NO stretching frequency was observed in water with respect to that in dDMSO, which was believed to be due to ligand-solvent hydrogen-bonding interactions, one N═O···D and particularly three Ru-Cl···D, that show competing effects on the NO bond length. The dynamic differences of the NO stretch in these two solvents were further revealed by transient pump-probe IR and two-dimensional IR results: faster vibrational relaxation and faster spectral diffusion (SD) were observed in D2O, confirming stronger solvent-solute interaction and also faster solvent structural dynamics in D2O than in DMSO. Further, a significant non-decaying residual in the SD dynamics was observed in D2O but not in DMSO, suggesting the formation of a stable solvation shell in water due to strong multi-site ligand-solvent hydrogen-bonding interactions, which is in agreement with the observed blue-shifted NO stretching frequency. This work demonstrates that small solvent molecules such as water can form a relatively rigid solvation shell for certain transition metal complexes due to cooperative ligand-solvent interactions and show slower dynamics.
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Affiliation(s)
- Minjun Feng
- Beijing National Laboratory for Molecular Sciences, Molecular Reaction Dynamics Laboratory, Institute of Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P.R. China.,University of Chinese Academy of Sciences , Beijing 100049 , P.R. China
| | - Juan Zhao
- Beijing National Laboratory for Molecular Sciences, Molecular Reaction Dynamics Laboratory, Institute of Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P.R. China.,University of Chinese Academy of Sciences , Beijing 100049 , P.R. China
| | - Pengyun Yu
- Beijing National Laboratory for Molecular Sciences, Molecular Reaction Dynamics Laboratory, Institute of Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P.R. China.,University of Chinese Academy of Sciences , Beijing 100049 , P.R. China
| | - Jianping Wang
- Beijing National Laboratory for Molecular Sciences, Molecular Reaction Dynamics Laboratory, Institute of Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P.R. China.,University of Chinese Academy of Sciences , Beijing 100049 , P.R. China
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The novel organic mononitrate NDHP attenuates hypertension and endothelial dysfunction in hypertensive rats. Redox Biol 2017; 15:182-191. [PMID: 29268201 PMCID: PMC5735329 DOI: 10.1016/j.redox.2017.12.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 11/30/2017] [Accepted: 12/06/2017] [Indexed: 01/13/2023] Open
Abstract
Rationale Development and progression of cardiovascular diseases, including hypertension, are often associated with impaired nitric oxide synthase (NOS) function and nitric oxide (NO) deficiency. Current treatment strategies to restore NO bioavailability with organic nitrates are hampered by undesirable side effects and development of tolerance. In this study, we evaluated NO release capability and cardiovascular effects of the newly synthesized organic nitrate 1, 3-bis (hexyloxy) propan-2-yl nitrate (NDHP). Methods A combination of in vitro and in vivo approaches was utilized to assess acute effects of NDHP on NO release, vascular reactivity and blood pressure. The therapeutic value of chronic NDHP treatment was assessed in an experimental model of angiotensin II-induced hypertension in combination with NOS inhibition. Results NDHP mediates NO formation in both cell-free system and small resistance arteries, a process which is catalyzed by xanthine oxidoreductase. NDHP-induced vasorelaxation is endothelium independent and mediated by NO release and modulation of potassium channels. Reduction of blood pressure following acute intravenous infusion of NDHP was more pronounced in hypertensive rats (two-kidney-one-clip model) than in normotensive sham-operated rats. Toxicological tests did not reveal any harmful effects following treatment with high doses of NDHP. Finally, chronic treatment with NDHP significantly attenuated the development of hypertension and endothelial dysfunction in rats with chronic NOS inhibition and angiotensin II infusion. Conclusion Acute treatment with the novel organic nitrate NDHP increases NO formation, which is associated with vasorelaxation and a significant reduction of blood pressure in hypertensive animals. Chronic NDHP treatment attenuates the progression of hypertension and endothelial dysfunction, suggesting a potential for therapeutic applications in cardiovascular disease. The organic nitrate NDHP mediates NO formation in cell-free system and blood vessels. NDHP-mediated NO release is dependent on functional XOR. NDHP induces endothelium-independent vasorelaxation and significant reduction of blood pressure. NDHP-mediated vasorelaxation involves activation of NO/cGMP/PKG pathway and K+ channels (Kv and BKCa). Chronic treatment with NDHP attenuates the development of hypertension and endothelial dysfunction.
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Ngene NC, Moodley J. Physiology of blood pressure relevant to managing hypertension in pregnancy. J Matern Fetal Neonatal Med 2017; 32:1368-1377. [PMID: 29172798 DOI: 10.1080/14767058.2017.1404569] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE Pregnancy causes physiological changes in maternal organ systems, and blood pressure (BP) is one of the variables affected. This review is focusing on the physiology of BP relevant to the management of hypertension in pregnancy. MATERIALS AND METHODS A detailed literature search was performed using electronic databases (including WorldCat, PubMed, MEDLINE, Google Scholar) to retrieve and review reports related to physiology of BP in pregnancy. RESULTS During pregnancy, there is vasodilation caused by mediators such as increased levels of progesterone and nitric oxide. The vasodilation leads to a reduction in vascular resistance, BP, and renal blood flow. In compensation, the following postulated events occur: activation of renin-angiotensin-aldosterone axis, resetting of osmotic threshold for thirst, and an increase in the production of vasopressin. Sodium and water conservation ensue to increase the total body water, end-diastolic volume, cardiac output, and BP. The increase in cardiac output incompletely compensates for the decreased vascular resistance, and BP therefore decreases in midpregnancy and returns to prepregnancy level toward term. CONCLUSIONS An understanding of the physiological changes in BP is essential for appropriate management of pregnancy-related hypertension.
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Affiliation(s)
- Nnabuike C Ngene
- a Department of Obstetrics and Gynaecology , University of KwaZulu-Natal , Durban , South Africa
| | - Jagidesa Moodley
- b Department of Obstetrics and Gynaecology , Women's Health and HIV Research Group, University of KwaZulu-Natal , Durban , South Africa
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Serafim RAM, Pernichelle FG, Ferreira EI. The latest advances in the discovery of nitric oxide hybrid drug compounds. Expert Opin Drug Discov 2017; 12:941-953. [PMID: 28664751 DOI: 10.1080/17460441.2017.1344400] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
INTRODUCTION There is a great interest in Nitric oxide (NO) within medicinal chemistry since it's involved in human signaling pathways. Prodrugs or hybrid compounds containing NO-donor scaffolds linked to an active compound are valuable, due to their potential for modulating many pathological conditions due to NO's biological properties when released in addition to the native drug. Compounds that selectively inhibit nitric oxide synthase isoforms (NOS) can also increase therapeutic capacity, particularly in the treatment of chronic diseases. However, search for bioactive compounds to efficiently and selectively modulate NO is still a challenge in drug discovery. Areas covered: In this review, the authors highlight the recent advances in the strategies used to discover NO-hybrid derivatives, especially those related to anti-inflammatory, cardiovascular, anticancer and anti-microorganism activities. They also focus on: nitric oxide synthase inhibitors, NO delivery materials and other related activities. Expert opinion: The process of molecular hybridization can be used to obtain NO-releasing compounds that also interact with different targets. The main problem with this approach is to control NO multiple actions in the right biological system. However, the use of NO-releasing groups with many different scaffolds leads to new molecular structures for bioactive compounds, suggesting synergies.
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Affiliation(s)
- Ricardo A M Serafim
- a LAPEN: Laboratory of Design and Synthesis of Chemotherapeutic Potentially Active against Neglected Diseases, Department of Pharmacy, Faculty of Pharmaceutical Sciences , University of São Paulo - FCF/USP , São Paulo , Brazil
| | - Filipe G Pernichelle
- a LAPEN: Laboratory of Design and Synthesis of Chemotherapeutic Potentially Active against Neglected Diseases, Department of Pharmacy, Faculty of Pharmaceutical Sciences , University of São Paulo - FCF/USP , São Paulo , Brazil
| | - Elizabeth I Ferreira
- a LAPEN: Laboratory of Design and Synthesis of Chemotherapeutic Potentially Active against Neglected Diseases, Department of Pharmacy, Faculty of Pharmaceutical Sciences , University of São Paulo - FCF/USP , São Paulo , Brazil
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Oishi J, De Moraes T, Buzinari T, Cárnio E, Parizotto N, Rodrigues G. Hypotensive acute effect of photobiomodulation therapy on hypertensive rats. Life Sci 2017; 178:56-60. [DOI: 10.1016/j.lfs.2017.04.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 04/12/2017] [Accepted: 04/13/2017] [Indexed: 11/28/2022]
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Pinto FCM, Campos-Silva P, Souza DBD, Costa WS, Sampaio FJB. Nutritional supplementation with arginine protects radiation-induced effects. An experimental study. Acta Cir Bras 2017; 31:650-654. [PMID: 27828597 DOI: 10.1590/s0102-865020160100000002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Accepted: 09/18/2016] [Indexed: 11/21/2022] Open
Abstract
PURPOSE: To investigate the protective effect of L-arginine on the prostate (nonneoplasic) of rats with radiation-induced injury. METHODS: Twenty-nine Wistar rats, male adult, allocated into three groups: Control group (C) was not exposed to irradiation (n=10); Radiated group (R) had undergone pelvic irradiation (n=10); Supplemented and radiated group (R+S) had undergone pelvic irradiation plus L-arginine supplementation (n=9). The animals were observed for signs of toxicity. After euthanization, the prostate was dissected under magnification and stained by hematoxylin and eosin to study acinar structures and stained with Picrosirius red for collagen analysis. RESULTS: After radiation exposure, all animals presented diarrhea, but supplementation with L-arginine reduced this effect. The weight gain in the R+S group was significantly higher than in the C and R groups. In the R+S group the collagen density and the prostate acinar area was similar to the R and C groups. Epithelial height was significantly reduced in group R compared with group C (p<0.0001). When comparing the group R+S with R, a statistical difference was observed to be present (p<0.0001). CONCLUSIONS: Pelvic radiation promotes systemic effects and some structural modifications in the ventral prostate of rats. These modifications can be prevented by oral supplementation with L-arginine.
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Affiliation(s)
- Flavia Cristina Morone Pinto
- Assistant Professor, Researcher, Nucleus of Experimental Surgery, Department of Surgery, Center for Health Sciences, Universidade Federal de Pernambuco (UFPE), Recife-PE, Brazil. Design of the study, histomorphometrical examinations, statistical analysis, manuscript writing
| | - Pamella Campos-Silva
- Graduate student, Urogenital Research Unit, Universidade Estadual do Rio de Janeiro (UERJ), Brazil. Acquisition of data, histomorphometrical examinations
| | - Diogo Benchimol de Souza
- Assistant Professor, Researcher, Urogenital Research Unit, UERJ, Rio de Janeiro-RJ, Brazil. Intellectual and scientific content of the study, functional examination
| | - Waldemar Silva Costa
- Associate Professor, Urogenital Research Unit, UERJ, Rio de Janeiro-RJ, Brazil. Design of the study, manuscript writing, supervised all phases of the study
| | - Francisco José Barcellos Sampaio
- Full Professor, CNPq 1A Researcher, Urogenital Research Unit, UERJ, Rio de Janeiro-RJ, Brazil. Intellectual and scientific content of the study
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Takashima M, Kanamori Y, Kodera Y, Morihara N, Tamura K. Aged garlic extract exerts endothelium-dependent vasorelaxant effect on rat aorta by increasing nitric oxide production. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2017; 24:56-61. [PMID: 28160862 DOI: 10.1016/j.phymed.2016.11.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 11/17/2016] [Accepted: 11/20/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Clinical trials have shown that aged garlic extract (AGE) is effective in reducing blood pressure of hypertensive patients. However, the mechanisms involved remain to be elucidated. PURPOSE The aim of the present study was to investigate the vasorelaxant effect of AGE on the aorta and its mechanism of action in order to clarify the blood pressure-lowering action of AGE. METHODS The vasorelaxant effect was evaluated in isolated rat aortic rings. After aortic rings were contracted by 3 × 10-6M norepinephrine (NE) for 30min, AGE and other test drugs were added to the aortic rings. All results were expressed as percentages of the maximal NE-induced contraction. RESULTS AGE induced the concentration-dependent vasorelaxation of isolated rat aortic rings that had been precontracted with norepinephrine. The effect of AGE was severely impaired in aortic rings lacking endothelium. In addition, the effect of AGE was inhibited by a nitric oxide synthase (NOS) inhibitor and a nitric oxide (NO) scavenger. Moreover, AGE treatment of aorta significantly increased the NO production. When various constituents of AGE were tested, the vasorelaxation of aorta was observed only in the presence of L-arginine, a substrate of NOS. CONCLUSION AGE causes endothelium-dependent vasorelaxation of aorta via stimulation of NO production and that L-arginine in AGE serves as a key agent for NOS-mediated NO production.
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Affiliation(s)
- Miyuki Takashima
- Drug Discovery Laboratory, Wakunaga Pharmaceutical Co. Ltd., 1624 Shimokotachi, Koda-cho, Akitakata, Hiroshima 739-1195, Japan.
| | - Yuta Kanamori
- Drug Discovery Laboratory, Wakunaga Pharmaceutical Co. Ltd., 1624 Shimokotachi, Koda-cho, Akitakata, Hiroshima 739-1195, Japan
| | - Yukihiro Kodera
- Drug Discovery Laboratory, Wakunaga Pharmaceutical Co. Ltd., 1624 Shimokotachi, Koda-cho, Akitakata, Hiroshima 739-1195, Japan
| | - Naoaki Morihara
- Drug Discovery Laboratory, Wakunaga Pharmaceutical Co. Ltd., 1624 Shimokotachi, Koda-cho, Akitakata, Hiroshima 739-1195, Japan
| | - Koichi Tamura
- Drug Discovery Laboratory, Wakunaga Pharmaceutical Co. Ltd., 1624 Shimokotachi, Koda-cho, Akitakata, Hiroshima 739-1195, Japan
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Hypotensive effect and vascular relaxation in different arteries induced by the nitric oxide donor RuBPY. Nitric Oxide 2017; 62:11-16. [DOI: 10.1016/j.niox.2016.11.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 11/01/2016] [Accepted: 11/04/2016] [Indexed: 11/21/2022]
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Yang W, Li S, Liao L, Zheng X, Li J, Zheng Y, Zhang X, Zhu D. Nobiletin Relaxes Isolated Mesenteric Arteries by Activating the Endothelial Ca 2+-eNOS Pathway in Rats. J Vasc Res 2016; 53:330-339. [DOI: 10.1159/000452415] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 10/08/2016] [Indexed: 11/19/2022] Open
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Neves JA, Neves JA, Oliveira RDCM. Biomarcadores de função endotelial em doenças cardiovasculares: hipertensão. J Vasc Bras 2016; 15:224-233. [PMID: 29930594 PMCID: PMC5829760 DOI: 10.1590/1677-5449.000316] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 07/28/2016] [Indexed: 12/17/2022] Open
Abstract
A incidência de hipertensão arterial sistêmica está aumentando mundialmente. Sua prevenção baseia-se na identificação dos hipertensos. Atualmente, biomarcadores são utilizados com fins de diagnosticar, estratificar e prognosticar doenças. Neste estudo, objetivou-se revisar artigos dos últimos cinco anos relacionados a biomarcadores nas doenças cardiovasculares. Pesquisaram-se dados de PubMed, SciELO, Science Direct e MEDLINE, mediante as palavras-chave: hipertensão arterial, biomarcadores cardiovasculares, óxido nítrico, função endotelial e dimetilarginina assimétrica. Os estudos levantados mostram que as doenças cardiovasculares possuem uma etiologia complexa. Neste artigo, evidenciaram-se interações entre o óxido nítrico e a dimetilarginina assimétrica na regulação, no metabolismo e na determinação dos níveis intracelulares, e reviram-se outros biomarcadores relacionados à hipertensão. Alguns estudos indicam os biomarcadores como uma ferramenta útil na predição de eventos cardíacos, e outros reportam que eles contribuem pouco para a avaliação. A seleção e combinação desses pode ser uma alternativa para validar o uso dos biomarcadores devido à pouca especificidade existente para diagnosticar a hipertensão.
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Affiliation(s)
- Josynaria Araújo Neves
- Universidade Federal do Piauí – UFPI, Núcleo de Pesquisa em Plantas Medicinais – NPPM, Teresina, PI, Brasil.
| | - Josyanne Araújo Neves
- Universidade Federal do Piauí – UFPI, Núcleo de Pesquisa em Plantas Medicinais – NPPM, Teresina, PI, Brasil.
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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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Eid LP, Soriano RN, Batalhão ME, Balderrama LP, Carnio EC. Pharmacotherapy and analysis of gaseous mediators in hypertensive patients. Rev Esc Enferm USP 2015; 49:69-75. [DOI: 10.1590/s0080-623420150000100009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 10/22/2014] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE To evaluate the effect of using antihypertensive classes of drugs of the calcium channel antagonists and inhibitors of angiotensin-converting enzyme in plasma concentrations of hydrogen sulfide and nitric oxide in patients with hypertension. METHODS Cross-sectional study with quantitative approach conducted with hypertensive patients in use of antihypertensive classes of drugs: angiotensin-converting enzyme inhibitors or calcium channel antagonists. RESULTS It was found that the concentration of plasma nitric oxide was significantly higher in hypertensive patients that were in use of angiotensin-converting enzyme inhibitors (p<0.03) and the hydrogen sulphide concentration was significantly higher in hypertensive plasma in use of calcium channel antagonists (p<0.002). CONCLUSION The findings suggest that these medications have as additional action mechanism the improvement of endothelial dysfunction by elevate plasma levels of vasodilatory substances.
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Potje SR, Munhoz FC, Perassa LA, Graton ME, Pereira AA, Nakamune ACM, da Silva RS, Bendhack LM, Sumida DH, Antoniali C. Mechanisms underlying the hypotensive and vasodilator effects of Ru(terpy)(bdq)NO]3+, a nitric oxide donor, differ between normotensive and spontaneously hypertensive rats. Eur J Pharmacol 2014; 741:222-9. [DOI: 10.1016/j.ejphar.2014.08.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 08/14/2014] [Accepted: 08/18/2014] [Indexed: 01/08/2023]
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Enhancing vascular relaxing effects of nitric oxide-donor ruthenium complexes. Future Med Chem 2014; 6:825-38. [DOI: 10.4155/fmc.14.26] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Ruthenium-derived complexes have emerged as new nitric oxide (NO) donors that may help circumvent the NO deficiency that impairs vasodilation. NO in vessels can be produced by the endothelial cells and/or released by NO donors. NO interacts with soluble guanylyl-cyclase to produce cGMP to activate the kinase-G pathway. As a result, conductance arteries, veins and resistance arteries dilate, whereas the cytosolic Ca2+ levels in the smooth muscle cells decrease. NO also reacts with oxygen or the superoxide anion, to generate reactive oxygen species that modulate NO-induced vasodilation. In this article, we focus on NO production by NO synthase and discuss the vascular changes taking place during hypertension originating from endothelial dysfunction. We will describe how the NO released from ruthenium-derived complexes enhances the vascular effects arising from failed NO generation or lack of NO bioavailability. In addition, how ruthenium-derived NO donors induce the hypotensive effect by vasodilation is also discussed.
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Bai S, Yao T, Li M, Guo X, Zhang Y, Zhu S, He Y. PIF3 is involved in the primary root growth inhibition of Arabidopsis induced by nitric oxide in the light. MOLECULAR PLANT 2014; 7:616-25. [PMID: 24157606 PMCID: PMC3973492 DOI: 10.1093/mp/sst142] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Accepted: 10/07/2013] [Indexed: 05/21/2023]
Abstract
PHYTOCHROME INTERACTING FACTOR3 (PIF3) is an important component in the phytochrome signaling pathway and mediates plant responses to various environmental conditions. We found that PIF3 is involved in the inhibition of root growth of Arabidopsis thaliana seedlings induced by nitric oxide (NO) in light. Overexpression of PIF3 partially alleviated the inhibitory effect of NO on root growth, whereas the pif3-1 mutant displayed enhanced sensitivity to NO in terms of root growth. During phytochrome signaling, the photoreceptor PHYB mediates the degradation of PIF3. We found that the phyB-9 mutant had a similar phenotype to that of PIF3ox in terms of responsiveness to NO. Furthermore, NO treatment promoted the accumulation of PHYB, and thus reduced PIF3 content. Our results further show that the activity of PIF3 is regulated by the DELLA protein RGL3[RGA (repressor of ga1-3) LIKE 3]. Therefore, we speculate that PIF3 lies downstream of PHYB and RGL3, and plays an important role in the inhibitory effect of NO on root growth of Arabidopsis seedlings in light.
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Affiliation(s)
- Sulan Bai
- College of Life Sciences, Capital Normal University, Beijing 100048, PR China
| | - Tao Yao
- College of Life Sciences, Capital Normal University, Beijing 100048, PR China
| | - Miaomiao Li
- College of Life Sciences, Capital Normal University, Beijing 100048, PR China
| | - Xiaomin Guo
- College of Life Sciences, Capital Normal University, Beijing 100048, PR China
| | - Yaochuan Zhang
- Beijing Vocational College of Agriculture, Beijing 102442, PR China
| | - Shengwei Zhu
- Institute of Botany, Chinese Academy of Sciences, Beijing 100731, PR China
| | - Yikun He
- College of Life Sciences, Capital Normal University, Beijing 100048, PR China
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Staurengo-Ferrari L, Mizokami SS, Silva JJ, da Silva FON, Sousa EHS, da França LG, Matuoka ML, Georgetti SR, Baracat MM, Casagrande R, Pavanelli WR, Verri WA. The ruthenium NO donor, [Ru(bpy)2(NO)SO3](PF6), inhibits inflammatory pain: involvement of TRPV1 and cGMP/PKG/ATP-sensitive potassium channel signaling pathway. Pharmacol Biochem Behav 2013; 105:157-65. [PMID: 23470198 DOI: 10.1016/j.pbb.2013.02.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Revised: 02/11/2013] [Accepted: 02/13/2013] [Indexed: 10/27/2022]
Abstract
The activation of nitric oxide (NO) production is an analgesic mechanism shared by drugs such as morphine and diclofenac. Therefore, the controlled release of low amounts of NO seems to be a promising analgesic approach. In the present study, the antinociceptive effect of the ruthenium NO donor [Ru(bpy)2(NO)SO3](PF6) (complex I) was investigated. It was observed that complex I inhibited in a dose (0.3-10mg/kg)-dependent manner the acetic acid-induced writhing response. At the dose of 1mg/kg, complex I inhibited the phenyl-p-benzoquinone-induced writhing response and formalin- and complete Freund's adjuvant-induced licking and flinch responses. Additionally, complex I also inhibited transient receptor potential cation channel subfamily V member 1 (TRPV1)-dependent overt pain-like behavior induced by capsaicin. Complex I also inhibited the carrageenin-induced mechanical hyperalgesia and increase of myeloperoxidase activity (MPO) in paw skin samples. The inhibitory effect of complex I in the carrageenin-induced hyperalgesia, MPO activity and formalin was prevented by the treatment with ODQ, KT5823 and glybenclamide, indicating that complex I inhibits inflammatory hyperalgesia by activating the cGMP/PKG/ATP-sensitive potassium channel signaling pathway. The present study demonstrates the efficacy of a novel ruthenium NO donor and its analgesic mechanisms.
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Affiliation(s)
- Larissa Staurengo-Ferrari
- Departamento de Patologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid KM480 PR445, CEP 86051-990, Cx Postal 6001, Londrina, Paraná, 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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DI BO, LI XINYUAN, SONG LIQUN, WANG QIANGHU, LIU SUYAN. Association study of ACE and eNOS single nucleotide polymorphisms with Henoch-Schönlein purpura nephritis. Mol Med Rep 2012; 6:1171-7. [DOI: 10.3892/mmr.2012.1032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Accepted: 08/02/2012] [Indexed: 11/06/2022] Open
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