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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] [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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Aqeel MT, Rahman NU, Khan AU, Khan MT, Ashraf Z, Hassan SSU, Bungau SG, Majid M. Cardioprotective effect of 2-methoxy phenol derivatives against oxidative stress-induced vascular complications: An integrated in vitro, in silico, and in vivo investigation. Biomed Pharmacother 2023; 165:115240. [PMID: 37531779 DOI: 10.1016/j.biopha.2023.115240] [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: 05/14/2023] [Revised: 07/25/2023] [Accepted: 07/25/2023] [Indexed: 08/04/2023] Open
Abstract
BACKGROUND Oxidative stress and inflammation play crucial roles in macro/microvascular complications. Phenolic compounds and their derivatives show promise as therapeutic agents for diseases like cancer, metabolic disorders, and cardiovascular diseases. With their antioxidant and anti-inflammatory properties, these compounds hold potential for mitigating vascular complications and improving overall health. METHODOLOGY This study aimed to assess the therapeutic potential of five 2-methoxy phenol derivatives (T2, T5, T6, T7, and T8) as antioxidants, anti-inflammatory agents, and vasorelaxants using in vitro, in silico, and in vivo approaches. RESULTS Among all, T2 exhibited substantial antioxidant potential against 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radicals with IC50 (27.97 µg/mL), nitric oxide (NO) radicals (IC50 = 34.36 µg/mL), hydroxyl (OH) radicals (IC50 = 34.83 µg/mL) and Iron chelation (IC50 = 24.32 µg/mL). Molecular docking analysis confirms that all derivatives, particularly T2, exhibit favorable binding energies with the target proteins, ACE (-7.7 Kcal/mol), ECE-1 (-7.9 Kcal/mol), and COX-1 (-7.8 Kcal/mol). All of the compounds demonstrated satisfactory physicochemical and pharmacokinetic characteristics, and showed minimal to no toxicity during in silico, in vitro, and in vivo assessments. In isolated aortic rings from Sprague Dawley rats, pre-contracted with high K+ (80 mM), T2 induced vasorelaxation in dose dependent manner and shifted calcium response curves to the right as compared to verapamil. T2 also showed substantial platelet aggregation inhibition in a dose dependent manner with IC50 21.29 µM. All derivatives except T7 exhibited significant conservation of endogenous antioxidants i.e. catalase (CAT), peroxidase (POD), superoxide dismutase (SOD) and reduced glutathione (GSH) and significantly suppressed serum levels of inflammatory markers i.e. nitric oxide (NO), peroxides (TBARS), interleukin-6 (IL-6) and cyclooxygenase-2 (COX-2). CONCLUSION The study concludes that T2 has significant antioxidant potential and vasorelaxant effects with adequate pharmacokinetics, making it a promising lead compound for further molecular investigation in cardiovascular disorders.
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Affiliation(s)
| | - Nisar-Ur Rahman
- Department of Pharmacy, COMSATS University Abbottabad, 22060, Pakistan
| | - Arif-Ullah Khan
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad 45320, Pakistan
| | - Muhammad Tariq Khan
- Faculty of Pharmacy, Capital University of Science and Technology, Islamabad 45720, Pakistan
| | - Zaman Ashraf
- Allama Iqbal Open University, Islamabad 44310, Pakistan
| | - Syed Shams Ul Hassan
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Simona Gabriela Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, 410028 Oradea, Romania.
| | - Muhammad Majid
- Faculty of Pharmacy, Hamdard University Islamabad, 45550, Pakistan.
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Lin Z, Cheng X, Zheng H. Umbelliferon: a review of its pharmacology, toxicity and pharmacokinetics. Inflammopharmacology 2023:10.1007/s10787-023-01256-3. [PMID: 37308634 DOI: 10.1007/s10787-023-01256-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 05/24/2023] [Indexed: 06/14/2023]
Abstract
Coumarin, a plant secondary metabolite, has various pharmacological activities, including antioxidant stress and anti-inflammatory effects. Umbelliferone, a common coumarin compound found in almost all higher plants, has been extensively studied for its pharmacological effects in different disease models and doses with complex action mechanisms. This review aims to summarize these studies and provide useful information to relevant scholars. The pharmacological studies demonstrate that umbelliferone has diverse effects such as anti-diabetes, anti-cancer, anti-infection, anti-rheumatoid arthritis, neuroprotection, and improvement of liver, kidney, and myocardial tissue damage. The action mechanisms of umbelliferone include inhibition of oxidative stress, inflammation, and apoptosis, improvement of insulin resistance, myocardial hypertrophy, and tissue fibrosis, in addition to regulation of blood glucose and lipid metabolism. Among the action mechanisms, the inhibition of oxidative stress and inflammation is the most critical. In short, these pharmacological studies disclose that umbelliferone is expected to treat many diseases, and more research should be conducted.
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Affiliation(s)
- Zhi Lin
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, People's Republic of China
| | - Xi Cheng
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, People's Republic of China
| | - Hui Zheng
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, People's Republic of China.
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7-Hydroxycoumarin Induces Vasorelaxation in Animals with Essential Hypertension: Focus on Potassium Channels and Intracellular Ca2+ Mobilization. Molecules 2022; 27:molecules27217324. [PMID: 36364149 PMCID: PMC9655823 DOI: 10.3390/molecules27217324] [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: 10/01/2022] [Revised: 10/22/2022] [Accepted: 10/24/2022] [Indexed: 12/01/2022] Open
Abstract
Cardiovascular diseases (CVD) are the deadliest noncommunicable disease worldwide. Hypertension is the most prevalent risk factor for the development of CVD. Although there is a wide range of antihypertensive drugs, there still remains a lack of blood pressure control options for hypertensive patients. Additionally, natural products remain crucial to the design of new drugs. The natural product 7-hydroxycoumarin (7-HC) exhibits pharmacological properties linked to antihypertensive mechanisms of action. This study aimed to evaluate the vascular effects of 7-HC in an experimental model of essential hypertension. The isometric tension measurements assessed the relaxant effect induced by 7-HC (0.001 μM–300 μM) in superior mesenteric arteries isolated from hypertensive rats (SHR, 200–300 g). Our results suggest that the relaxant effect induced by 7-HC rely on K+-channels (KATP, BKCa, and, to a lesser extent, Kv) activation and also on Ca2+ influx from sarcolemma and sarcoplasmic reticulum mobilization (inositol 1,4,5-triphosphate (IP3) and ryanodine receptors). Moreover, 7-HC diminishes the mesenteric artery’s responsiveness to α1-adrenergic agonist challenge and improves the actions of the muscarinic agonist and NO donor. The present work demonstrated that the relaxant mechanism of 7-HC in SHR involves endothelium-independent vasorelaxant factors. Additionally, 7-HC reduced vasoconstriction of the sympathetic agonist while improving vascular endothelium-dependent and independent relaxation.
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Goswami S. Interplay of potassium channel, gastric parietal cell and proton pump in gastrointestinal physiology, pathology and pharmacology. Minerva Gastroenterol (Torino) 2021; 68:289-305. [PMID: 34309336 DOI: 10.23736/s2724-5985.21.02964-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Gastric acid secretion plays a pivotal role in the physiology of gastrointestinal tract. The functioning of the system encompasses a P2 ATPase pump (which shuttles electroneutral function at low pH) along with different voltage sensitive/neutral ion channels, cytosolic proteins, acid sensor receptors as well hormonal regulators. The increased acid secretion is a pathological marker of several diseases like peptic ulcer, gastroesophageal reflux disease (GERD), chronic gastritis, and the bug Helicobacter pylori (H. pylori) has also a critical role, which altogether affects the patient's quality of life. This review comprehensively describes about the nature of potassium ion channel and its mediators, the different clinical strategy to control acid rebound, and some basic experimental observations performed to study the interplay of ion channels, pumps, as well as mediators during acid secretion. Different aspects of regulation of gastric acid secretion have been focused either in terms of physiology of secretion or molecular interactions. The importance of H pylori infection and its treatment have also been discussed. Furthermore, the relevance of calcium signaling during acid secretion has been reviewed. The entire theme will make anyone to understand in details about the gastric secretion machinery in general.
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Affiliation(s)
- Suchandra Goswami
- Smt. Vidyawati College of Pharmacy, Gora Machhiya, Jhansi, Uttar Pradesh, India -
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Druggable hot spots in trypanothione reductase: novel insights and opportunities for drug discovery revealed by DRUGpy. J Comput Aided Mol Des 2021; 35:871-882. [PMID: 34181199 DOI: 10.1007/s10822-021-00403-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Accepted: 06/18/2021] [Indexed: 10/21/2022]
Abstract
Assessment of target druggability guided by search and characterization of hot spots is a pivotal step in early stages of drug-discovery. The raw output of FTMap provides the data to perform this task, but it relies on manual intervention to properly combine different sets of consensus sites, therefore allowing identification of hot spots and evaluation of strength, shape and distance among them. Thus, the user's previous experience on the target and the software has a direct impact on how data generated by FTMap server can be explored. DRUGpy plugin was developed to overcome this limitation. By automatically assembling and scoring all possible combinations of consensus sites, DRUGpy plugin provides FTMap users a straight-forward method to identify and characterize hot spots in protein targets. DRUGpy is available in all operating systems that support PyMOL software. DRUGpy promptly identifies and characterizes pockets that are predicted by FTMap to bind druglike molecules with high-affinity (druggable sites) or low-affinity (borderline sites) and reveals how protein conformational flexibility impacts on the target's druggability. The use of DRUGpy on the analysis of trypanothione reductases (TR), a validated drug target against trypanosomatids, showcases the usefulness of the plugin, and led to the identification of a druggable pocket in the conserved dimer interface present in this class of proteins, opening new perspectives to the design of selective inhibitors.
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