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Gaona-Tovar E, Estrada-Soto S, Ramírez-Hernández A, Arias-Durán L, Tlahuext H, Villalobos-Molina R, Almanza-Pérez JC. Vasorelaxant and tracheorelaxant effects of Bocconia arborea and their isolated benzophenanthridine alkaloids. Fitoterapia 2024:106212. [PMID: 39278422 DOI: 10.1016/j.fitote.2024.106212] [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: 06/13/2024] [Revised: 08/27/2024] [Accepted: 09/10/2024] [Indexed: 09/18/2024]
Abstract
Bocconia arborea S. Watson (Papaveraceae) is an abundant medicinal plant in the North of Morelos State, Mexico, which is used for the treatment of several diseases. The aim of current investigation was to isolate the compounds responsible of the relaxant effect shown by the active extracts. Thus, phytochemical bio-guided fractionation allowed the isolation of angoline (1), dihydrosanguinarine (2), bocconarborine A (3), oxisanguinarine (4), and oxychelerithrine (5) from dichloromethanic and methanolic extracts from the bark of Bocconia arborea (Papaveraceae). The relaxant study on aortic and tracheal rat rings of all benzophenanthridines indicates that 1 was the most active compound of the entire series investigated. Angoline (1) induces its relaxant effect by a concentration-dependent manner through the calcium channel blockade in both tissues.
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Affiliation(s)
- Emmanuel Gaona-Tovar
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico
| | - Samuel Estrada-Soto
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico.
| | | | - Luis Arias-Durán
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico
| | - Hugo Tlahuext
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico
| | - Rafael Villalobos-Molina
- Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla 54090, Estado de México, Mexico
| | - Julio C Almanza-Pérez
- Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Iztapalapa, Ciudad de México 09340, Mexico
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Pomini AM, Sahyun SA, Oliveira SMDE, Faria RTDE. Bioactive natural products from orchids native to the Americas - A review. AN ACAD BRAS CIENC 2023; 95:e20211488. [PMID: 37646708 DOI: 10.1590/0001-3765202320211488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 01/26/2023] [Indexed: 09/01/2023] Open
Abstract
The purpose of this review is to provide information on the traditional uses, phytochemical and pharmacological studies performed with species of orchids native to the Americas and the Caribbean Islands. The treatment of inflammation is the most traditional use for plants of this family, specially in Central America, while anti-inflammatory and anticancer assays are oftenly reported in pharmacological investigations. From the chemical point of view, they are sources of phenanthrenoids and stilbenes, rare secondary metabolites not commonly found in other families of plants, as well as cycloartane triterpenes, pyrrolizidine alkaloids and flavonoids. Since just few species were chemically and pharmacologically studied, in comparison to the large number of native species (less than 0.5% of the total), the orchids of the New World may be an interesting niche for the discovery of new, bioactive natural products.
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Affiliation(s)
- Armando Mateus Pomini
- State University of Maringá, Department of Chemistry, Colombo Avenue 5790, 87020-900 Maringá, PR, Brazil
| | - Sandra Aparecida Sahyun
- State University of Londrina, Department of Agronomy, Celso Garcia Road, Km 380, 86057-970 Londrina, PR, Brazil
| | - Silvana Maria DE Oliveira
- State University of Maringá, Department of Chemistry, Colombo Avenue 5790, 87020-900 Maringá, PR, Brazil
| | - Ricardo Tadeu DE Faria
- State University of Londrina, Department of Agronomy, Celso Garcia Road, Km 380, 86057-970 Londrina, PR, Brazil
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Advances in Breeding, Bioprospecting, and In Vitro Culture of Laelia Orchid Species. HORTICULTURAE 2022. [DOI: 10.3390/horticulturae8020103] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Orchids (Orchidaceae) are plants that are highly appreciated by their beautiful flowers worldwide. Moreover, they represent a source of metabolites with applications in medicine and biotechnology. Within the Orchidaceae family, the Laelia genus is a group of orchid species from the Neotropics and is probably one of the most representative genera of America. Laelia orchids are cultivated by their splendid flowers and are widely used in orchid breeding. Here, we revise the use of the Laelia genus in orchid breeding and metabolite bioprospecting. We also analyze the use of plant tissue culture (PTC) as an alternative to conventional propagation and as a strategy for the recovery of those Laelia species threatened with extinction. We summarize and discuss the recent advances in the application of different PTC techniques for mass multiplication based on asymbiotic germination, organogenesis, protocorm-like bodies development, and somatic embryogenesis, and the advances of in vitro conservation by cryoconservation and the use of slow-growth promoting hormones. Finally, we suggest future directions and venues in research for Laelia species.
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Estrada-Soto S, Rendón-Vallejo P, Villalobos-Molina R, Millán-Pacheco C, Vázquez M, Hernández-Borja F, Hernández-Núñez E. 6-Amino-3-Methyl-4-(2-nitrophenyl)-1,4-Dihydropyrano[2,3-c]Pyrazole-5-Carbonitrile Shows Antihypertensive and Vasorelaxant Action via Calcium Channel Blockade. Drug Res (Stuttg) 2021; 72:53-60. [PMID: 34662917 DOI: 10.1055/a-1616-0156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Several 4H-pyran derivatives were designed and synthesized previously as vasorelaxant agents for potential antihypertensive drugs. In this context, the objective of the present investigation was to determine the functional mechanism of vasorelaxant action of 6-amino-3-methyl-4-(2-nitrophenyl)-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile (1: ) and its in vivo antihypertensive effect. Thus, compound 1: showed significant vasorelaxant action on isolated aorta rat rings pre-contracted with serotonin or noradrenaline, and the effect was not endothelium-dependent. Compound 1: induced a significant relaxant effect when aortic rings were contracted with KCl (80 mM), indicating that the main mechanism of action is related to L-type calcium channel blockade. Last was corroborated since compound 1: induced a significant concentration-dependent lowering of contraction provoked by cumulative CaCl2 adding. Moreover, compound 1: was capable to block the contraction induced by FPL 64176, a specific L-type calcium channel agonist, in a concentration-dependent manner. On the other hand, docking studies revealed that compound 1: interacts on two possible sites of the L-type calcium channel and it had better affinity energy (-7.80+/-0.00 kcal/mol on the best poses) than nifedipine (-6.86+/-0.14 kcal/mol). Finally, compound 1: (50 mg/kg) showed significant antihypertensive activity, lowering the systolic and diastolic blood pressure on spontaneously hypertensive rats (SHR) without modifying heart rate.
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Affiliation(s)
- Samuel Estrada-Soto
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México
| | - Priscila Rendón-Vallejo
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México
| | - Rafael Villalobos-Molina
- Unidad de Biomedicina, Facultad de Estudios Superiores-Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Estado de México, México
| | - César Millán-Pacheco
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México
| | - MiguelA Vázquez
- Departamento de Química, División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Guanajuato, México
| | - Fernando Hernández-Borja
- Departamento de Química, División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Guanajuato, México
| | - Emanuel Hernández-Núñez
- Cátedra CONACyT, Departamento de Recursos del Mar, Centro de Investigación y de Estudios Avanzados del IPN, Unidad Mérida, Yucatán, Mexico
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Arias-Durán L, Estrada-Soto S, Hernández-Morales M, Millán-Pacheco C, Navarrete-Vázquez G, Villalobos-Molina R, Ibarra-Barajas M, Almanza-Pérez JC. Antihypertensive and vasorelaxant effect of leucodin and achillin isolated from Achillea millefolium through calcium channel blockade and NO production: In vivo, functional ex vivo and in silico studies. JOURNAL OF ETHNOPHARMACOLOGY 2021; 273:113948. [PMID: 33610712 DOI: 10.1016/j.jep.2021.113948] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 01/31/2021] [Accepted: 02/16/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Achillea millefolium L. (Asteraceae), known as yarrow (milenrama), is a plant used in Mexican traditional medicine for the treatment of hypertension, diabetes, and related diseases. AIM To determine the vasorelaxant and antihypertensive effect of A. millefollium and to isolate the main bioactive antihypertensive agents. MATERIALS AND METHODS Organic (hexane, dichloromethane and methanol) and hydro-alcohol (Ethanol-H2O: 70:30) extracts obtained from flowers, leaves and stems were evaluated on isolated aorta rat rings with and without endothelium to determine their vasorelaxant effect. Hexane extract from flowers (HEAmF) was studied to evaluate its antihypertensive effect on spontaneously hypertensive rats (SHR). From HEAmF, bioactive compounds were obtained by bio-guided phytochemical separation through chromatography. RESULTS Organic extracts showed the best vasorelaxant activity. Hexane extract from flowers was the most potent and efficient ex vivo vasorelaxant agent, showing significant decrease of systolic and diastolic blood pressure in SHR (p < 0.05). Phytochemical separation of HEAmF yielded two epimeric sesquiterpene lactones: leucodin (1) and achillin (2), the major components of the extract. Both 1 and 2 showed similar vasorelaxant action ex vivo (p < 0.05), and their effects where modified by L-NAME (10 μM, nitric oxide synthase inhibitor), by ODQ (1 μM, soluble guanylyl cyclase inhibitor), and also relaxed the contraction induced by KCl (80 mM). Finally, 1 and 2 intragastric administration (50 mg/kg) decreased systolic and diastolic blood pressure in SHR. CONCLUSIONS Achillea millefolium showed antihypertensive and vasorelaxant effects, due mainly to leucodin and achillin (epimers). Both compounds showed antihypertensive activity by vasorelaxation putatively by endothelium-dependent NO release and cGMP increase, as well as by calcium channels blockade.
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Affiliation(s)
- Luis Arias-Durán
- Facultad de Farmacia, Universidad Autónoma Del Estado de Morelos, Cuernavaca, Morelos, 62209, Mexico
| | - Samuel Estrada-Soto
- Facultad de Farmacia, Universidad Autónoma Del Estado de Morelos, Cuernavaca, Morelos, 62209, Mexico.
| | | | - César Millán-Pacheco
- Facultad de Farmacia, Universidad Autónoma Del Estado de Morelos, Cuernavaca, Morelos, 62209, Mexico
| | - Gabriel Navarrete-Vázquez
- Facultad de Farmacia, Universidad Autónoma Del Estado de Morelos, Cuernavaca, Morelos, 62209, Mexico
| | - Rafael Villalobos-Molina
- Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Estado de México, 54090, Mexico
| | - Maximiliano Ibarra-Barajas
- Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Estado de México, 54090, Mexico
| | - Julio C Almanza-Pérez
- Laboratorio de Farmacología, Depto. Ciencias de La Salud, D.C.B.S, Universidad Autónoma Metropolitana- Iztapalapa, Ciudad de México, 09340, Mexico
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Ajebli M, Eddouks M. Phytotherapy of Hypertension: An Updated Overview. Endocr Metab Immune Disord Drug Targets 2021; 20:812-839. [PMID: 31880255 DOI: 10.2174/1871530320666191227104648] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 11/11/2019] [Accepted: 11/12/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Cardiovascular disorders are the leading cause of morbidity and mortality throughout the globe. Hypertension is the main risk factor that contributes to the development of many diseases. The use of herbal therapies, medicinal plants and their derivatives for the remedy and management of hypertension is well-recognized and popular among a wide part of the world population. METHODS The aim of the current review was to collect, treat, and critically analyze the published research studies relative to experimental and clinical investigations which have studied the blood pressure lowering abilities of medicinal plant derivatives in the last decade. This review was organized into three principal axes; the first axis was attributed to the in vivo and in vitro experimental studies; the second treated the clinical trials; while, the last one is devoted to analyze the mechanisms of action underlying the therapeutic antihypertensive effectiveness of phytochemicals. RESULTS Different types of extracts and isolated molecules obtained from a large variety of species demonstrated their efficiency in improving the increase of blood pressure either experimentally or clinically. Medicinal species such as garlic (Allium sativum), celery (Apium graveolens), Black Cumin (Nigella sativa) and Ginseng (Panax) are among the most common and therapeutically used plant derivatives for controlling hypertension while Asteraceae, Apiaceae and Rosaceae are among the botanical families which were frequently studied in the last decade. Isolated compounds such as allicin and apigenin have received more interest in this field. Recent evidence from clinical trials suggests that a wide variety of herbal preparations and plant extracts or natural isolated compounds have a favorable therapeutic impact on blood flow. Interestingly, phytochemicals can either act directly on blood vessels via a vasorelaxant effect involving a variety of signaling cascades or indirectly through inhibiting or stimulating diversity of systems such as angiotensin-converting enzyme (ACE), renin-angiotensin system (RAS) or the diuretic activity. Hence, based on the findings of the present review medicinal plant derivatives could be used as preventive and curative agents in the case of cardiovascular disorders, particularly hypertension and could play a promoting function for the discovery of new antihypertensive agents. CONCLUSION The analysis of the published data shows that a great effort remains to be done to investigate the medicinal plants cited as antihypertensive through published ethnopharmacological surveys. The analysis of the literature in this field shows the lack of standardization at the level of experimental study methods as well as the need to study purified molecules. Moreover, the mechanistic studies when they exist remain in the whole partial. On the other hand, few advanced clinical studies have been conducted. Finally, the determination of the efficacy/safety ratio remains absent in almost all studies.
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Affiliation(s)
- Mohammed Ajebli
- Department of Biology, Faculty of Sciences and Techniques Errachidia, Team of Endocrine Physiology and Pharmacology, Moulay Ismail University of Meknes, BP 509, Boutalamine 52000, Errachidia, Morocco
| | - Mohamed Eddouks
- Department of Biology, Faculty of Sciences and Techniques Errachidia, Team of Endocrine Physiology and Pharmacology, Moulay Ismail University of Meknes, BP 509, Boutalamine 52000, Errachidia, Morocco
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Verma T, Sinha M, Bansal N, Yadav SR, Shah K, Chauhan NS. Plants Used as Antihypertensive. NATURAL PRODUCTS AND BIOPROSPECTING 2021; 11:155-184. [PMID: 33174095 PMCID: PMC7981375 DOI: 10.1007/s13659-020-00281-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 10/31/2020] [Indexed: 05/03/2023]
Abstract
Hypertension is a critical health problem and worse other cardiovascular diseases. It is mainly of two types: Primary or essential hypertension and Secondary hypertension. Hypertension is the primary possibility feature for coronary heart disease, stroke and renal vascular disease. Herbal medicines have been used for millions of years for the management and treatment of hypertension with minimum side effects. Over aim to write this review is to collect information on the anti-hypertensive effects of natural herbs in animal studies and human involvement as well as to recapitulate the underlying mechanisms, from the bottom of cell culture and ex-vivo tissue data. According to WHO, natural herbs/shrubs are widely used in increasing order to treat almost all the ailments of the human body. Plants are the regular industrial units for the invention of chemical constituents, they used as immunity booster to enhance the natural capacity of the body to fight against different health problems as well as herbal medicines and food products also. Eighty percent population of the world (around 5.6 billion people) consume medicines from natural plants for major health concerns. This review provides a bird's eye analysis primarily on the traditional utilization, phytochemical constituents and pharmacological values of medicinal herbs used to normalize hypertension i.e. Hibiscus sabdariffa, Allium sativum, Andrographis paniculata, Apium graveolens, Bidenspilosa, Camellia sinensis, Coptis chinensis, Coriandrum sativum, Crataegus spp., Crocus sativus, Cymbopogon citrates, Nigella sativa, Panax ginseng,Salviaemiltiorrhizae, Zingiber officinale, Tribulus terrestris, Rauwolfiaserpentina, Terminalia arjuna etc.
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Affiliation(s)
- Tarawanti Verma
- I.K. Gujral Punjab Technical University (IKGPTU), Jalandhar, Punjab India
| | - Manish Sinha
- Laureate Institute of Pharmacy, Kathog, Jwalamukhi, Kangra, Himachal Pradesh India
| | - Nitin Bansal
- Department of Pharmacology, ASBASJSM College of Pharmacy, BELA, Ropar, Punjab India
| | - Shyam Raj Yadav
- Department of Chemistry, S.P. Jain College (Veer Kunwar Singh University, Ara), Sasaram, Bihar India
| | - Kamal Shah
- Institute of Pharmaceutical Research, GLA University, NH#2, Mathura, Uttar Pradesh 281406 India
| | - Nagendra Singh Chauhan
- Drugs Testing Laboratory Avam Anusandhan Kendra, 1st Floor Govt. Ayurvedic Hospital Building, Govt. Ayurvedic College Campus G.E. Road, Raipur, Chhattisgarh 492010 India
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Estrada-Soto S, González-Trujano ME, Rendón-Vallejo P, Arias-Durán L, Ávila-Villarreal G, Villalobos-Molina R. Antihypertensive and vasorelaxant mode of action of the ethanol-soluble extract from Tagetes lucida Cav. aerial parts and its main bioactive metabolites. JOURNAL OF ETHNOPHARMACOLOGY 2021; 266:113399. [PMID: 32961278 DOI: 10.1016/j.jep.2020.113399] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 09/12/2020] [Accepted: 09/15/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Tagetes lucida Cav. commonly known as "yauhtli" or "pericón" is used in Mexican traditional medicine for the treatment of anxiety, depressant diseases, pain, hypertension, among others. AIM To evaluate the antihypertensive and vasorelaxant modes of action of a crude ethanolic extract from T. lucida aerial parts and to isolate the bioactive compounds. MATERIALS AND METHODS Ethanolic extract was tested in an in vivo assay in SHR rats by intragastric administration at 10 and 100 mg/kg dosages, to measure and to compare hemodynamic parameters like diastolic and systolic blood pressure and heart rate. Also, extract (3.03-1000 μg/ml), fractions (3.03-1000 μg/ml) and pure isolated compounds (1.75-550 μM) were evaluated on isolated aortic rings contracted with noradrenaline (0.1 μM) to determine their vasorelaxant effect and extract-mode of action. RESULTS Ethanolic extract of T. lucida lowered systolic and diastolic blood pressure on SHR rats without heart rate modification (P > 0.05). Moreover, the extract showed concentration-dependent relaxant effect in a partially endothelium-dependent manner (P < 0.05), through NO/cGMP system activation and calcium channel blockade. 6,7,8-trimethoxycoumarin (1), 6,7-dimethoxycoumarin (2), and 7-methoxycoumarin (3) from T. lucida are the main bioactive compounds of the extract and showed significant vasorelaxant activity. CONCLUSIONS Results provide evidence and endorsed the antihypertensive properties attributed to T. lucida in traditional medicine, which is produced by vasorelaxant effect mainly through multitarget NO/cGMP system activation and calcium channel blockade. Coumarin derivatives 1, 2 and 3 are the responsible of the vasorelaxant activity.
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Affiliation(s)
- Samuel Estrada-Soto
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico.
| | - Ma Eva González-Trujano
- Laboratorio de Neurofarmacología de Productos Naturales de la Dirección de Investigaciones en Neurociencias del Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Ciudad de México, Mexico.
| | - Priscila Rendón-Vallejo
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Luis Arias-Durán
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Gabriela Ávila-Villarreal
- Centro Nayarita de Innovación y Transferencia de Tecnología "Unidad especializada en I+D+i en Calidad de Alimentos y Productos Naturales", Universidad Autónoma de Nayarit, Nayarit, Mexico
| | - Rafael Villalobos-Molina
- Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Estado de México, Mexico
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Sánchez-Recillas A, Navarrete-Vázquez G, Hidalgo-Figueroa S, Bonilla-Hernández M, Ortiz-Andrade R, Ibarra-Barajas M, Yáñez-Pérez V, Sánchez-Salgado JC. Pharmacological characterization of the cardiovascular effect of Nibethione: ex vivo, in vivo and in silico studies. J Pharm Pharmacol 2020; 72:1186-1198. [PMID: 32500554 DOI: 10.1111/jphp.13295] [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: 02/06/2020] [Revised: 04/16/2020] [Accepted: 04/25/2020] [Indexed: 11/27/2022]
Abstract
OBJECTIVE This work describes the vasorelaxant and antihypertensive effects and the mechanism of action on vascular smooth muscle cells of Nibethione, a synthetic thiazolidinedione derivative. Additionally, evidence of its cytotoxicity is assessed. METHODS Nibethione (NB) was synthesized, and its vasorelaxant effect and mechanism of action were assessed through ex vivo experiments. Molecular docking studies were used to predict the mode of interaction with L-type Ca2+ channel, and in vivo antihypertensive activity was assayed on spontaneously hypertensive rats (SHR). The cytotoxicity potential was evaluated in porcine aortic endothelial cells (PAECs) from primary explants. KEY FINDINGS Nibethione vasorelaxant effect was efficient on KCl (80 mm) and NE-contraction. This effect was deleteriously modified in the presence of potassium channel block drugs, while the maximal contraction induced with NE was significantly decreased by NB; the CaCl2 -induced contraction was abolished entirely. In vivo experiments showed that NB decreased diastolic blood pressure in 20.3 % after its administration on SHR. The molecular docking showed that NB blocks L-type Ca2+ channel, and in vitro tests showed that NB did not produce cytotoxic activity on PAECs (IC50 >1000 µm). CONCLUSIONS Nibethione showed in vivo antihypertensive and ex vivo vasorelaxant effects with implication of voltage-dependent L-type Ca2+ channel blocking, and this may contribute to the research of novel antihypertensive drugs.
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Affiliation(s)
- Amanda Sánchez-Recillas
- Laboratorio de Farmacología, Facultad de Química, Universidad Autónoma de Yucatán, Mérida, México
| | - Gabriel Navarrete-Vázquez
- Laboratorio de Química Farmacéutica, Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca, México
| | - Sergio Hidalgo-Figueroa
- CONACyT, IPICYT/Consorcio de Investigación, Innovación y Desarrollo para las Zonas Áridas, San Luis Potosí, México
| | | | - Rolffy Ortiz-Andrade
- Laboratorio de Farmacología, Facultad de Química, Universidad Autónoma de Yucatán, Mérida, México
| | - Maximiliano Ibarra-Barajas
- Unidad de Investigación en Biomedicina, Facultad de Estudios Superiores Iztacala, Universidad Autónoma de México, Tlalnepantla de Baz, México
| | - Víctor Yáñez-Pérez
- Laboratorio de Farmacología, Facultad de Química, Universidad Autónoma de Yucatán, Mérida, México
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Mata R, Figueroa M, Navarrete A, Rivero-Cruz I. Chemistry and Biology of Selected Mexican Medicinal Plants. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2019; 108:1-142. [PMID: 30924013 DOI: 10.1007/978-3-030-01099-7_1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Herbal medicines are an integral element of alternative medical care in Mexico, and the best testimony to their efficacy and cultural value is their persistence in contemporary Mexican marketplaces where the highest percentages of medicinal and aromatic plants are sold. This chapter summarizes current trends in research on medicinal plants in Mexico, with emphasis on work carried out at the authors' laboratories. The most relevant phytochemical and pharmacological profiles of a selected group of plants used widely for treating major national health problems are described.From this contribution, it is evident that in the last five decades a significant amount of research on medicinal plants has been performed by Mexican scientists. Such efforts have led to the publication of many research papers in noted peer-reviewed journals and technical books. The isolation and structural characterization of hundreds of bioactive secondary metabolites have been accomplished, and most importantly, these studies have tended to support the ethnomedical uses of many different species. A multidisciplinary approach for investigating these plants has led to an increased emphasis on areas such as phytopharmacology, phytotoxicology, quality control, regulation, and conservation issues for these valuable resources. The medicinal plants analyzed so far have shown a very broad chemical diversity of their constituents, which have a high potential for exhibiting novel mechanistic effects biologically. The chapter shows also that there is need to conduct additional clinical studies on herbal drugs, in particular because the longstanding traditional evidence for their safety is not always sufficient to assure their rational use. There is also need to move to "omics" approaches for investigating the holistic effect and the influence of groups of phytochemicals on the whole organism. Mexican scientists may be expected to have bright prospects in this regard, which will imbue medicinal plant research with a new dynamism in the future.
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Affiliation(s)
- Rachel Mata
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, México.
| | - Mario Figueroa
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, México.
| | - Andrés Navarrete
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Isabel Rivero-Cruz
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, México
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El-Bassossy HM, Mahmoud MF, Eid BG. The vasodilatory effect of allopurinol mediates its antihypertensive effect: Effects on calcium movement and cardiac hemodynamics. Biomed Pharmacother 2018; 100:381-387. [PMID: 29454286 DOI: 10.1016/j.biopha.2018.02.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 01/27/2018] [Accepted: 02/09/2018] [Indexed: 11/19/2022] Open
Abstract
Despite the reported reduction in blood pressure in hypertensive patients treated with allopurinol, the mechanism of the allopurinol hypotensive effect is still unclear. In the current study, the hypotensive effect of allopurinol has been fully investigated in hypertensive rats. Hypertension was induced in rats by angiotensin II (120 ng/min/kg) infusion for two weeks. Rats were then subjected to real-time recording of blood pressure, left ventricular pressure and volume and surface ECG. After 10 min of basal recording, allopurinol was slowly injected into the femoral vein with a dose of 10 μmole/kg. Then, invasive blood pressure, cardiac hemodynamics and ECG were continuously recorded for an additional 20 min. In addition, the vasodilation effect of allopurinol was studied using the isolated artery technique. Allopurinol injection reduced systolic, diastolic and pulse blood pressure. Allopurinol suppressed both cardiac systolic and diastolic hemodynamics as is apparent from the reduction in the rate of rise and the rate of fall in left ventricular pressure. Allopurinol reduced the general cardiac output quickly. Allopurinol addition to the organ bath (10-1000 μM) produced significant vasodilation of PE pre-constricted aortae that was not affected by endothelium denudation, L-NAME or indomethacin. However, allopurinol ameliorated the calcium induced contraction of aorta pre-constricted with KCl in calcium-free media. Erk or ROCK inhibition did not attenuated allopurinol produced vasodilation. In conclusion, allopurinol has an antihypertensive effect that is mediated, probably, by reducing cardiac output and decreasing vascular resistance. The vasodilator effect of allopurinol is most likely mediated by calcium blocking activities.
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Affiliation(s)
- Hany M El-Bassossy
- Department of Pharmacology, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia; Department of Pharmacology, Faculty of Pharmacy, Zagazig University, Egypt.
| | - Mona F Mahmoud
- Department of Pharmacology, Faculty of Pharmacy, Zagazig University, Egypt
| | - Basma G Eid
- Department of Pharmacology, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
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Bouhedja M, Peres B, Fhayli W, Ghandour Z, Boumendjel A, Faury G, Khelili S. Design, synthesis and biological evaluation of novel ring-opened cromakalim analogues with relaxant effects on vascular and respiratory smooth muscles and as stimulators of elastin synthesis. Eur J Med Chem 2018; 144:774-796. [DOI: 10.1016/j.ejmech.2017.12.071] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 12/17/2017] [Accepted: 12/18/2017] [Indexed: 11/27/2022]
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14
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Rojas-Olivos A, Solano-Gómez R, Alexander-Aguilera A, Jiménez-Estrada M, Zilli-Hernández S, Lagunez-Rivera L. Effect of Prosthechea karwinskii (Orchidaceae) on obesity and dyslipidemia in Wistar rats. ALEXANDRIA JOURNAL OF MEDICINE 2017. [DOI: 10.1016/j.ajme.2016.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Alejandra Rojas-Olivos
- Instituto Politécnico Nacional, CIIDIR Oaxaca, Hornos 1003, Santa Cruz Xoxocotlán, Oaxaca, 71230, Mexico
| | - Rodolfo Solano-Gómez
- Instituto Politécnico Nacional, CIIDIR Oaxaca, Hornos 1003, Santa Cruz Xoxocotlán, Oaxaca, 71230, Mexico
| | - Alfonso Alexander-Aguilera
- Facultad de Bioanálisis, Universidad Veracruzana, Carmen Serdán s/n , Col. Flores Magón, Veracruz, Veracruz, 91700, Mexico
- Escuela de Medicina, Universidad Cristóbal Colón, Carr. Veracruz-Medellin s/n , Col. Puente Moreno, Boca del Río, Veracruz, 94271, Mexico
| | - Manuel Jiménez-Estrada
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Del. Coyoacán, 04510 México, D.F., Mexico
| | - Stefan Zilli-Hernández
- Escuela de Medicina, Universidad Cristóbal Colón, Carr. Veracruz-Medellin s/n , Col. Puente Moreno, Boca del Río, Veracruz, 94271, Mexico
| | - Luicita Lagunez-Rivera
- Instituto Politécnico Nacional, CIIDIR Oaxaca, Hornos 1003, Santa Cruz Xoxocotlán, Oaxaca, 71230, Mexico
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Patten GS, Abeywardena MY, Bennett LE. Inhibition of Angiotensin Converting Enzyme, Angiotensin II Receptor Blocking, and Blood Pressure Lowering Bioactivity across Plant Families. Crit Rev Food Sci Nutr 2016; 56:181-214. [PMID: 24915402 DOI: 10.1080/10408398.2011.651176] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Hypertension is a major risk factor for coronary heart disease, kidney disease, and stroke. Interest in medicinal or nutraceutical plant bioactives to reduce hypertension has increased dramatically. The main biological regulation of mammalian blood pressure is via the renin-angiotensin-aldosterone system. The key enzyme is angiotensin converting enzyme (ACE) that converts angiotensin I into the powerful vasoconstrictor, angiotensin II. Angiotensin II binds to its receptors (AT1) on smooth muscle cells of the arteriole vasculature causing vasoconstriction and elevation of blood pressure. This review focuses on the in vitro and in vivo reports of plant-derived extracts that inhibit ACE activity, block angiotensin II receptor binding and demonstrate hypotensive activity in animal or human studies. We describe 74 families of plants that exhibited significant ACE inhibitory activity and 16 plant families with potential AT1 receptor blocking activity, according to in vitro studies. From 43 plant families including some of those with in vitro bioactivity, the extracts from 73 plant species lowered blood pressure in various normotensive or hypertensive in vivo models by the oral route. Of these, 19 species from 15 families lowered human BP when administered orally. Some of the active plant extracts, isolated bioactives and BP-lowering mechanisms are discussed.
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Affiliation(s)
- Glen S Patten
- a CSIRO Preventative Health National Research Flagship, Animal, Food and Health Sciences , Adelaide , South Australia , Australia
| | - Mahinda Y Abeywardena
- a CSIRO Preventative Health National Research Flagship, Animal, Food and Health Sciences , Adelaide , South Australia , Australia
| | - Louise E Bennett
- b CSIRO Preventative Health National Research Flagship, Animal, Food and Health Sciences, Werribee , Victoria , British Columbia , Australia
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Wicha P, Tocharus J, Nakaew A, Pantan R, Suksamrarn A, Tocharus C. Ethyl rosmarinate relaxes rat aorta by an endothelium-independent pathway. Eur J Pharmacol 2015; 766:9-15. [PMID: 26362751 DOI: 10.1016/j.ejphar.2015.09.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 08/25/2015] [Accepted: 09/01/2015] [Indexed: 11/16/2022]
Abstract
Ethyl rosmarinate is an ester derivative of rosmarinic acid, a major constituent of Hyptis suaveolens. The present study investigated the vasorelaxant mechanism of ethyl rosmarinate in isolated rat aortic rings using an organ bath system. Ethyl rosmarinate (0.1 µM-3mM) produced concentration-dependent relaxation in aortic rings pre-contracted with phenylephrine (10 µM), exhibiting a pD2 value of 4.56 ± 0.08 and an Emax value of 93.82 ± 5.00% (in endothelium-intact rings), as well as a pD2 value of 4.42 ± 0.05 and an Emax value of 92.10 ± 3.78% (in endothelium-denuded rings). In the endothelium-denuded rings, the vasorelaxant effect of ethyl rosmarinate was reduced by only 4-aminopyridine (1mM); however, this was not the case with tetraethylammonium (5mM), glibenclamide (10 µM), barium chloride (1mM), and 1H-[1,2,4] oxadiazolo [4,3-a]quinoxalin-1-one (ODQ, 1 µM). Ethyl rosmarinate also reduced the contraction induced by phenylephrine (10 µM) and caffeine (20mM) in a Ca(2+)-free solution, and inhibited the contraction induced by increasing extracellular Ca(2+) influx, which was induced by KCl (80 mM). Ethyl rosmarinate (10 µM) inhibits concentration-response curves for phenylephrine, while in the same concentration of ethyl rosmarinate has no effect on contractions induced by increasing concentrations of calcium in the presence of high extracellular potassium. Our results suggests that ethyl rosmarinate induces relaxation in aortic rings via an endothelium-independent pathway, which involves the opening of voltage-gated potassium (Kv) channels and the blockade of both Ca(2+)release from intracellular stores and extracellular Ca(2+) influx. Moreover, ethyl-rosmarinate acts on the extracellular Ca(2+) influx inhibition by interacting with voltage-operated calcium channels (VOCCs) and receptor-operated calcium channels (ROCCs).
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Affiliation(s)
- Piyawadee Wicha
- Department of Anatomy, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Jiraporn Tocharus
- Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Archawin Nakaew
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ramkhamhaeng University, Bangkok 10240, Thailand
| | - Rungusa Pantan
- Department of Anatomy, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Apichart Suksamrarn
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ramkhamhaeng University, Bangkok 10240, Thailand
| | - Chainarong Tocharus
- Department of Anatomy, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
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Zhu K, Yang SN, Ma FF, Gu XF, Zhu YC, Zhu YZ. The novel analogue of hirsutine as an anti-hypertension and vasodilatary agent both in vitro and in vivo. PLoS One 2015; 10:e0119477. [PMID: 25909998 PMCID: PMC4409389 DOI: 10.1371/journal.pone.0119477] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 01/13/2015] [Indexed: 11/19/2022] Open
Abstract
In this paper, an analogue of hirsutine (compound 1) has been synthesized and evaluated as an anti-hypertension agent, which exhibits extraordinary effects on the contractile response of thoracic aorta rings from male SD rats in vitro (IC50 = 1.129×10(-9)±0.5025) and the abilities of reducing the systolic blood pressure (SBP) and heart rate (HR) of SHR in vivo. The mechanism investigation reveals that the vasodilatation induced by compound 1 is mediated by both endothelium-dependent and -independent manners. The relaxation in endothelium-intact aortic rings induced by compound 1 can be inhibited by L-NAME (1×10(-6) mol•L(-1)) and ODQ (1×10(-6) mol•L(-1)). Moreover, compound 1 can also block Ca2+ influx through L-type Ca2+ channels and inhibit intracellular Ca2+ release while no effect on K+ channel has been observed. All these data demonstrated that the NO/cyclic GMP pathway can be involved in endothelium-dependent manner induced by compound 1. Meanwhile the mechanism on the vasodilatation of compound 1 probably also related to blockade of Ca2+ influx through L-type Ca2+ channels and inhibition of intracellular Ca2+ release may have no relationship with K+ channels.
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Affiliation(s)
- Kai Zhu
- Department of Pharmacology, School of Pharmacy and Institute of Biomedical Sciences, Fudan University, Shanghai, 201203, China
| | - Su-Na Yang
- Department of Pharmacology, School of Pharmacy and Institute of Biomedical Sciences, Fudan University, Shanghai, 201203, China
| | - Fen-Fen Ma
- Department of Pharmacology, School of Pharmacy and Institute of Biomedical Sciences, Fudan University, Shanghai, 201203, China
| | - Xian-Feng Gu
- Department of Medicinal Chemistry, School of Pharmacy and Institute Biomedical Sciences, Fudan University, Shanghai, 201203, China
| | - Yi-Chun Zhu
- Departments of Physiology and Pathophysiology, Shanghai College of Medicine, Fudan University, Shanghai, 201203, China
| | - Yi-Zhun Zhu
- Department of Pharmacology, School of Pharmacy and Institute of Biomedical Sciences, Fudan University, Shanghai, 201203, China
- Department of Pharmacology, National University of Singapore, Singapore, Singapore
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18
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Qu Z, Zhang J, Huo L, Chen H, Li H, Fan Y, Gao W. Antihypertensive and vasorelaxant effects of Rhizoma corydalis and its active component tetrahydropalmatine via NO/cGMP pathway and calcium channel blockade in isolated rat thoracic aorta. RSC Adv 2015. [DOI: 10.1039/c5ra17756a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The vasorelaxant effects of RC and THPviathe NO/cGMP pathway and calcium channel blockade in isolated rat thoracic aorta are explored.
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Affiliation(s)
- Zhuo Qu
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency
- School of Pharmaceutical Science and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Jingze Zhang
- Department of Pharmacy
- Logistics College of Chinese People’s Armed Police Forces
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury
- Tianjin 300162
- China
| | - Liqin Huo
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency
- School of Pharmaceutical Science and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Hong Chen
- Department of Pharmacy
- Logistics College of Chinese People’s Armed Police Forces
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury
- Tianjin 300162
- China
| | - Hongfa Li
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency
- School of Pharmaceutical Science and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Yaya Fan
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency
- School of Pharmaceutical Science and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Wenyuan Gao
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency
- School of Pharmaceutical Science and Technology
- Tianjin University
- Tianjin 300072
- China
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19
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Kubacka M, Mogilski S, Bednarski M, Raźny K, Sapa J, Waszkielewicz AM, Marona H, Filipek B. The nitric oxide/soluble cyclic guanylase/cyclic guanosine monophosphate pathway is involved in the cardiovascular effects of a novel α1- and β-adrenoceptor antagonist. Pharmacology 2014; 94:287-95. [PMID: 25531925 DOI: 10.1159/000369628] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 11/04/2014] [Indexed: 11/19/2022]
Abstract
The compound MH-78 ((+/-)-1-(2,6-dimethylphenoxy)-3-{4-[2-(2-methoxyphenoxy)ethyl]-piperazin-1-yl}propan-2-ol dihydrochloride) contains structural elements that are typical for α1- and β-blockers. This study aimed to investigate the hypotensive activity as well as the in vitro and in vivo cardiovascular effects of a novel α1- and β-adrenoceptor antagonist (MH-78) and compare it with carvedilol and urapidil. The procedures were performed on aortic rings of normotensive anesthetized rats. MH-78 decreased the blood pressure and heart rate after intravenous and oral administration. MH-78 possesses both α1- and β-adrenoceptor blocking activity, which was confirmed in the in vivo study. In biofunctional assays, MH-78 displayed vasorelaxant activity due to α1-adrenoceptor antagonism and calcium channel blocking properties. Moreover, in endothelium-intact aortic rings, pretreatment with Nω-nitro-L-arginine methyl ester (L-NAME) and 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one (ODQ) reduced the MH-78-induced vasorelaxation to a level that is characteristic for MH-78 affinity to α1-adrenoceptors. Our results demonstrated that MH-78 possesses α1- and β-adrenoceptor blocking properties and induces potent hypotensive and vasorelaxant effects. Moreover, it relaxes vascular smooth muscle not only due to α1-adrenoceptor blocking activity, but also via the endothelium-dependent nitric oxide/soluble guanylyl cyclase/cyclic guanosine monophosphate signalling pathway.
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Affiliation(s)
- Monika Kubacka
- Department of Pharmacodynamics, Faculty of Pharmacy, Medical College, Jagiellonian University, Kraków, Poland
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20
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Qu Z, Zhang J, Gao W, Chen H, Guo H, Wang T, Li H, Liu C. Vasorelaxant effects of Cerebralcare Granule® are mediated by NO/cGMP pathway, potassium channel opening and calcium channel blockade in isolated rat thoracic aorta. JOURNAL OF ETHNOPHARMACOLOGY 2014; 155:572-579. [PMID: 24924524 DOI: 10.1016/j.jep.2014.05.062] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 05/26/2014] [Accepted: 05/31/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cerebralcare Granule (CG), one of the famous classical recipes in traditional Chinese medicine, is developed from the "Decoction of Four Drugs". It has been used for treatment of cerebrovascular related diseases, such as hypertension. It is well known that vasodilatation plays a very important role in hypertensive. Despite the popular medicinal use of CG, little data was available to its activity and mechanism involved in vasodilatation. Therefore, we aimed to investigate the vasorelaxant effects of CG on isolated rat thoracic aorta so as to assess some of the possible mechanisms. The present study was performed to examine the vasodilative activity of CG and its mechanisms in isolated rat thoracic aorta. MATERIALS AND METHODS CG was studied on isolated rat thoracic aorta in vitro, including endothelium-intact and endothelium-denuded aortic rings. In present study, specific inhibitors including NO synthase inhibitor NG-nitro-L-arginine methyl ester (L-NAME), cyclooxygenase (COX) inhibitor indomethacin (INDO), non-selective K+ channel inhibitor tetraethylammonium chloride (TEA), Kir channel inhibitor BaCl2, KATP channel inhibitor Glibenclamide (Gli) and cholinergic receptor antagonist atropine were used, they were added 20 min before NE contraction and then added CG-induced vasodilation. RESULTS Removal of endothelium or pretreatment of aortic rings (intact endothelium) with L-NAME (0.1 mM) or INDO (0.01 mM) significantly blocked the CG induced relaxation. Pretreatment with the non-selective K+ channel inhibitor TEA (1 mM), or the Kir channel inhibitor BaCl2 (0.1 mM), neither of them had no influence on the CG-induced response (p>0.05). However, pretreatment with the KATP channel inhibitor Gli (0.01 mM) produced significant inhibition on the CG-induced response (p<0.01). Besides, CG also inhibited the contraction triggered by NE in endothelium-denuded rings in Ca2+-free medium. CG (0.4, 0.8 and 3.2 mg/mL) produced rightward parallel displacement of CaCl2 curves and reduced the maximum contraction induced by 30 mM CaCl2 to 31.1±9.3%, 18.8±6.9% and 9.4±4.5%, respectively. The relaxation, induced by CG on endothelium-intact rat aortic rings pre-contracted with NE, was significantly attenuated in the presence of atropine (EC50=3.7 mg/mL, p<0.01). CONCLUSIONS Our results suggest that CG induces relaxation in rat aortic rings through an endothelium-dependent pathway mediated by NO/cGMP pathway and an endothelium-independent pathway involving blockade of Ca2+ channels, inhibition of Ca2+ mobilization from intracellular stores, opening of KATP channel. In addition, the muscarinic receptor stimulation is also one of the vasorelaxant mechanisms.
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Affiliation(s)
- Zhuo Qu
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Jingze Zhang
- Department of Pharmacy, Logistics College of Chinese People׳s Armed Police Forces, Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Tianjin 300162, China
| | - Wenyuan Gao
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Hong Chen
- Department of Pharmacy, Logistics College of Chinese People׳s Armed Police Forces, Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Tianjin 300162, China
| | - Huimin Guo
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Tingting Wang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Hongfa Li
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Changxiao Liu
- The State Key Laboratories of Pharmacodynamics and Pharmacokinetics, Tianjin, China
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21
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Gorzalczany S, Moscatelli V, Ferraro G. Artemisia copa aqueous extract as vasorelaxant and hypotensive agent. JOURNAL OF ETHNOPHARMACOLOGY 2013; 148:56-61. [PMID: 23588093 DOI: 10.1016/j.jep.2013.03.061] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 03/18/2013] [Accepted: 03/22/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Artemisia copa Phil. (Asteraceae) is a medicinal plant commonly used in traditional medicine in Argentina. AIM OF THE STUDY The vasorelaxant and hypotensive activities of the aqueous extract of Artemisia copa have been investigated. MATERIALS AND METHODS The in vitro effect of the extract and isolated compounds from Artemisia copa was investigated using isolated rat aortic rings. The acute effect caused by the intravenous (i.v.) infusion (0.1-300mg/kg) on blood pressure and heart rate was evaluated in spontaneous hypertensive rats. In addition, a phytochemical analysis of the extract was performed by HPLC. RESULTS Artemisia copa had a relaxant effect in endothelium-intact aortic rings that had been pre-contracted with 10(-7)M phenylephrine (Emax=96.7±1.3%, EC50=1.1mg/ml), 10(-5)M 5-hydroxytriptamine (Emax=96.7±3.5%, EC50=1.5mg/ml) and 80mM KCl (Emax=97.9± 4.4%, EC50=1.6mg/ml). In denuded aortic rings contracted by phenylephrine, a similar pattern was observed (Emax=92.7±6.5%, EC50=1.8mg/ml). l-NAME, indomethacin, tetraethylammonium and glibenclamide were not able to block the relaxation induced by the extract. Nevertheless, the pre-treatment with Artemisia copa attenuated the CaCl2-induced contraction in a concentration-dependent manner (Emax: 86% of inhibition for 3mg/ml and 52% de-inhibition for 1mg/ml). This pre-treatment also induced a significant attenuation of the norepinephrine-induced contraction in a concentration-dependent manner (Emax: 72.7% of inhibition for 3mg/ml and 27% de inhibition for 1mg/ml) in a Ca(2+) free medium. Upon analyzing the composition of the extract, the presence of p-coumaric acid, isovitexin, luteolin and chrysoeriol were found. Luteolin (CE50: 1.5μg/ml), chrysoeriol (CE50: 13.2μg/ml) and p-coumaric acid (CE50: 95.2μg/ml), isolated from the aqueous extract, caused dilatation of thoracic aortic rings pre-contracted with phenylephrine. Artemisia copa administered i.v. also induced a decrease in the mean arterial pressure but did not affect the heart rate in hypertensive rats. CONCLUSIONS The aqueous extract of Artemisia copa proved to have vasorelaxing and hypotensive effects through the inhibition of Ca(2+) influx via membranous calcium channels and intracellular stores. The presence of luteolin, chrysoeriol and p-coumaric acid found in this plant could be involved in this effect.
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Affiliation(s)
- Susana Gorzalczany
- Cátedra de Farmacología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, C1113AAD Buenos Aires, Argentina.
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Rational design, synthesis and QSAR study of vasorelaxant active 3-pyridinecarbonitriles incorporating 1H-benzimidazol-2-yl function. Eur J Med Chem 2013; 63:14-21. [DOI: 10.1016/j.ejmech.2013.01.042] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Revised: 01/20/2013] [Accepted: 01/24/2013] [Indexed: 11/23/2022]
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Rendón-Vallejo P, Hernández-Abreu O, Vergara-Galicia J, Millán-Pacheco C, Mejía A, Ibarra-Barajas M, Estrada-Soto S. Ex vivo study of the vasorelaxant activity induced by phenanthrene derivatives isolated from Maxillaria densa. JOURNAL OF NATURAL PRODUCTS 2012; 75:2241-2245. [PMID: 23234371 DOI: 10.1021/np300508v] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The phenanthrenes gymnopusin (1), fimbriol A (2), and erianthridin (3) from Maxillaria densa were found to induce significant relaxant effects in a concentration-dependent and endothelium-independent manner on aortic rings precontracted with norepinephrine (NE, 0.1 μM) and KCl (80 mM). Compound 1 was the most active and also inhibited the cumulative concentration-response contraction of NE or CaCl(2). Contractions induced by FPL 64176, an agonist of L-type voltage-dependent calcium channels, were blocked by 1. The potassium channel blockers glibenclamide and TEA (tetraethylammonium) reduced the relaxations induced by 1. Nevertheless, the effect of 1 was not modified by 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one, a specific soluble guanylate cyclase inhibitor. The functional results obtained suggest that 1 induces relaxation through an endothelium-independent pathway by the control of cationic channels (calcium channel blockade and potassium channel opening) in the myogenic response of rat aortic rings.
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Affiliation(s)
- Priscila Rendón-Vallejo
- Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Colonia Chamilpa, 62209. Cuernavaca, Morelos, México
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24
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Kubacka M, Mogilski S, Filipek B, Marona H. The hypotensive activity and alpha1-adrenoceptor antagonistic properties of some aroxyalkyl derivatives of 2-methoxyphenylpiperazine. Eur J Pharmacol 2012; 698:335-44. [PMID: 23117089 DOI: 10.1016/j.ejphar.2012.10.025] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Revised: 10/12/2012] [Accepted: 10/22/2012] [Indexed: 11/17/2022]
Abstract
In the search for new hypotesive agents a series of aroxyalkyl derivatives of 2-methoxyphenylpiperazine was obtained. The aim of the present study was to examine their hypotensive properties and to evaluate their mechanism of action. In the study their hypotensive activity after i.v. and p.o. administration, influence on the pressor responses to adrenaline, noradrenaline and methoxamine, direct spasmolytic and vasorelaxant effects were assessed. In the next step two compounds which were the most active and selective for α(1)-adrenoceptors were evaluated for their α(1)-adrenoreceptor subtypes selectivity in functional bioassays. The data from our experiments indicate that the hypotensive activity of tested aroxyalkyl derivatives of 2-methoxyphenylpiperazine is mainly a result of their α(1)- or α(1)/α(2)-adrenoceptor blocking properties. The two most active compounds showed to be the competitive antagonists of α(1)-adrenoceptors with stronger activity at α(1D)-, α(1A)- and α(1L)- and weaker at α(1B)-subtype.
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Affiliation(s)
- Monika Kubacka
- Department of Pharmacodynamics, Faculty of Pharmacy, Medical College, Jagiellonian University, Medyczna 9, 30-688 Kraków, Poland.
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Sapa J, Kubacka M. The possible mechanism of hypotensive activity of some pyrrolidin-2-one derivatives with antagonist properties at alpha1-adrenoceptors. Eur J Pharmacol 2011; 673:40-8. [DOI: 10.1016/j.ejphar.2011.05.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Revised: 04/21/2011] [Accepted: 05/10/2011] [Indexed: 10/18/2022]
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Torres-Piedra M, Figueroa M, Hernández-Abreu O, Ibarra-Barajas M, Navarrete-Vázquez G, Estrada-Soto S. Vasorelaxant effect of flavonoids through calmodulin inhibition: Ex vivo, in vitro, and in silico approaches. Bioorg Med Chem 2011; 19:542-6. [DOI: 10.1016/j.bmc.2010.10.063] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2010] [Revised: 10/22/2010] [Accepted: 10/30/2010] [Indexed: 10/18/2022]
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Sánchez-Salgado JC, Castillo-España P, Ibarra-Barajas M, Villalobos-Molina R, Estrada-Soto S. Cochlospermum vitifolium induces vasorelaxant and antihypertensive effects mainly by activation of NO/cGMP signaling pathway. JOURNAL OF ETHNOPHARMACOLOGY 2010; 130:477-484. [PMID: 20553833 DOI: 10.1016/j.jep.2010.05.037] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2010] [Revised: 05/18/2010] [Accepted: 05/19/2010] [Indexed: 05/29/2023]
Abstract
AIM OF THE STUDY Cochlospermum vitifolium is a medicinal plant used for the treatment of diabetes, hepatobilary and cardiovascular illnesses. The aim of current study was to determine the in vivo antihypertensive and in vitro functional vasorelaxant mechanism of methanol extract of Cochlospermum vitifolium (MECv) and naringenin (NG). MATERIALS AND METHODS Test material was assayed on rat isolated aorta rings test with- and without-endothelium to determine their vasorelaxant mechanism. Also, the in vivo antihypertensive effect was evaluated on spontaneously hypertensive rat (SHR) model. In addition, presence of NG into the extract was confirmed by reverse phase high performance liquid chromatography (RP-HPLC) analysis. RESULTS MECv (120 mg/kg) and NG (50 and 160 mg/kg) showed acute antihypertensive effects on SHR when systolic and diastolic pressure were decreased at 1 h and 24 h after administration, respectively. Vasorelaxant effect of MECv and NG was shifted to the right when endothelium-intact aortic rings were pre-incubated with L-NAME (10 microM) and ODQ (1 microM). Also, NG relaxant curves were displaced to the right in the presence of tetraethylammonium (TEA, 1 mM) and 2-aminopyridine (2-AP, 100 microM) on endothelium-denuded aortic rings. CONCLUSION Experiments described above showed that MECv play an important role in hypertension regulation through NO synthesis and may be PGI(2) production and potassium channel activation on excessive endothelial dysfunction conditions. Unfortunately, presence of NG into the extract is not significant on bioactivity of the extract; however, this compound could be tested and evaluated as structural scaffold for future drug design for development of antihypertensive agents.
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Estrada-Soto S, Rivera-Leyva J, Ramírez-Espinosa JJ, Castillo-España P, Aguirre-Crespo F, Hernández-Abreu O. Vasorelaxant effect of Valeriana edulis ssp. procera (Valerianaceae) and its mode of action as calcium channel blocker. J Pharm Pharmacol 2010; 62:1167-74. [DOI: 10.1111/j.2042-7158.2010.01146.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Abstract
Objectives
The aim was to evaluate the relaxant effect of extracts from Valeriana edulis and determine the possible mechanism of action of the hexanic extract as vasorelaxant agent.
Methods
Extracts from rhizomes obtained by maceration (hexanic (HEVe), dichloromethanic (DEVe), methanolic (MEVe) and hydroalcoholic (HAEVe) (3.03–500 µg/ml)) were evaluated on aortic rat rings with and without endothelium.
Key findings
Extracts induced a significant concentration-dependent and endothelium-independent relaxation on isolated rat aorta pre-contracted with noradrenaline (0.1 µm). HEVe, the most potent extract (0.15–50 µg/ml), induced relaxation in aortic rings pre-contracted with KCl (80 mm), with an IC50 value of 34.61 ± 1.41 µg/ml and Emax value of 85.0 ± 4.38%. Pretreatment with HEVe (30 µg/ml) also inhibited contractile responses to noradrenaline and CaCl2. HEVe (9.98 ± 2.0 µg/ml) reduced noradrenaline-induced transient contraction in Ca2+-free solution, and inhibited contraction induced by KCl (80 mm). In endothelium-denuded rings, the vasorelaxant effect of HEVe was not modified by 1-H-[1,2,4]-oxadiazolo-[4,3a]-quinoxalin-1-one (1 µm), tetraethylammonium (5 mm), glibenclamide (10 µm) or 2-aminopyridine (100 µm).
Conclusions
Our results suggest that HEVe induces relaxation through an endothelium-independent pathway, involving blockade of Ca2+ channels, and this effect could be related to the presence of valepotriates.
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Affiliation(s)
- Samuel Estrada-Soto
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México
| | - Julio Rivera-Leyva
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México
| | | | - Patricia Castillo-España
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México
| | | | - Oswaldo Hernández-Abreu
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México
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Xu Z, Wang X, Dai Y, Kong L, Wang F, Xu H, Lu D, Song J, Hou Z. (+/-)-Praeruptorin A enantiomers exert distinct relaxant effects on isolated rat aorta rings dependent on endothelium and nitric oxide synthesis. Chem Biol Interact 2010; 186:239-46. [PMID: 20433815 DOI: 10.1016/j.cbi.2010.04.024] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2010] [Revised: 04/16/2010] [Accepted: 04/19/2010] [Indexed: 01/04/2023]
Abstract
Praeruptorin A is a coumarin compound naturally occurring in the roots of Peucedanum praeruptorum Dunn., a commonly used traditional Chinese medicine for the treatment of certain respiratory diseases and hypertension. Although previous studies indicated the relaxant effects of (+/-)-praeruptorin A on tracheal and arterial preparations, little is known about the functional characteristics of the enantiomers. In the present study, the two enantiomers were successfully isolated and identified by using a preparative Daicel Chiralpak AD-H column, and their relaxant effects on aorta rings were observed and compared. (+)-Praeruptorin A showed more potent relaxation than (-)-praeruptorin A against KCl- and phenylephrine-induced contraction of rat isolated aortic rings with intact endothelium. Removal of the endothelium remarkably reduced the relaxant effect of (+)-praeruptorin A but not that of (-)-praeruptorin A. Pretreatment of aortic rings with N(omega)-nitro-L-arginine methyl ester (L-NAME, an inhibitor of nitric oxide synthase) or methylene blue (MB, a soluble guanylyl cyclase inhibitor) resulted in similar changes of the relaxant effects of the two enantiomers to endothelium removal. Molecular docking studies also demonstrated that (+)-praeruptorin A was in more agreement to nitric oxide synthase pharmacophores than (-)-praeruptorin A. On the other hand, the two enantiomers of praeruptorin A could slightly attenuate the contraction of rat aortic rings induced by internal Ca(2+) release from sarcoplasmic reticulum (SR). These findings indicated that (+)-praeruptorin A and (-)-praeruptorin A exerted distinct relaxant effects on isolated rat aorta rings, which might be mainly attributed to nitric oxide synthesis catalyzed by endothelial nitric oxide synthase.
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Affiliation(s)
- Zhao Xu
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, Jiangsu, China
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Vasorelaxant and antihypertensive effects of methanolic extract from roots of Laelia anceps are mediated by calcium-channel antagonism. Fitoterapia 2009; 81:350-7. [PMID: 19879929 DOI: 10.1016/j.fitote.2009.10.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2009] [Revised: 10/12/2009] [Accepted: 10/15/2009] [Indexed: 11/21/2022]
Abstract
RMELanc-induced relaxation in aortic rings precontracted with NE, 5-HT and KCl. It also reduced NE-induced transient contraction in Ca(2+)-free solution and inhibited contraction induced by increasing external calcium. Nevertheless, the vasorelaxant effect of RMELanc was not reduced by ODQ, 1-alprenolol, TEA, glibenclamide, and 2-AP. Oral administration of 100 mg/kg of RMELanc exhibited a significant decrease in systolic and diastolic blood pressures in SHR rats. HPLC analysis allowed us to detect the presence of 2,7-dihydroxy-3,4,9-trimethoxyphenantrene (1), which induced a significant relaxation effect. Therefore, our results suggest that RMELanc induces vasorelaxant and antihypertensive effects by blockade of Ca(2+) channels.
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Hernández-Abreu O, Castillo-España P, León-Rivera I, Ibarra-Barajas M, Villalobos-Molina R, González-Christen J, Vergara-Galicia J, Estrada-Soto S. Antihypertensive and vasorelaxant effects of tilianin isolated from Agastache mexicana are mediated by NO/cGMP pathway and potassium channel opening. Biochem Pharmacol 2009; 78:54-61. [PMID: 19447223 DOI: 10.1016/j.bcp.2009.03.016] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2009] [Revised: 03/11/2009] [Accepted: 03/17/2009] [Indexed: 10/21/2022]
Abstract
Current investigation was undertaken to elucidate the mode of action of tilianin, isolated from Agastache mexicana, as a vasorelaxant agent on in vitro functional rat thoracic aorta test and to investigate the in vivo antihypertensive effect on spontaneously hypertensive rats (SHR). Tilianin (0.002-933 microM) induced significant relaxation in a concentration- and endothelium-dependent and -independent manners in aortic rings pre-contracted with noradrenaline (NA, 0.1 microM), and serotonin (5-HT, 100 microM). Effect was more significant (p < 0.05) in endothelium-intact (+E) aorta rings than when endothelium was removed(E). Pre-treatment with N-nitro-L-arginine methyl ester (L-NAME; 10 microM) or 1-H-[1,2,4]-oxadiazolo-[4,3a]-quinoxalin-1-one (ODQ, 1 microM) produced a significant change of the relaxant response and activity was markedly inhibited, but not by indomethacin (10 microM) or atropine (1 microM). Furthermore, tilianin (130 microM) provoked a significant displacement to the left in the relaxation curve induced by sodium nitroprusside (SNP; 0.32 nM to 0.1 microM). Moreover, tilianin induced significant in vitro NO overproduction (1.49 +/- 0.86 microM of nitrites/g of tissue) in rat aorta compared with vehicle (p < 0.05). In addition, pre-treatment with tetraethylammonium (TEA, 5 mM) and 2-aminopyridine (2-AP, 0.1 microM) shifted to the right the relaxant curve induced by tilianin (p < 0.05). Finally, a single oral administration of tilianin (50 mg/kg) exhibited a significant decrease in systolic and diastolic blood pressures (p < 0.05) in SHR model. Results indicate that tilianin mediates relaxation mainly by an endothelium-dependent manner,probably due to NO release, and also through an endothelium-independent pathway by opening K+ channels, both causing the antihypertensive effect.
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Affiliation(s)
- Oswaldo Hernández-Abreu
- Facultad de Farmacia, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Colonia Chamilpa, 62209 Cuernavaca, Morelos, Mexico
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