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Brito ADF, Silva AS, de Souza AA, Ferreira PB, de Souza ILL, Araujo LCDC, da Silva BA. Supplementation With Spirulina platensis Improves Tracheal Reactivity in Wistar Rats by Modulating Inflammation and Oxidative Stress. Front Pharmacol 2022; 13:826649. [PMID: 35712706 PMCID: PMC9192967 DOI: 10.3389/fphar.2022.826649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 02/14/2022] [Indexed: 11/13/2022] Open
Abstract
Spirulina platensis has shown effectiveness in the treatment of allergic rhinitis in rats, but its action in tracheal reactivity or on markers of relaxation and antioxidant profile has not yet been possible to determine. In this paper, the animals were divided into the groups healthy (SG) and supplemented with S. platensis at doses of 50 (SG50), 150 (SG150), and 500 mg/kg (SG500). We also evaluated nitrite levels, lipid peroxidation, and antioxidant activity through biochemical analysis. For contractile reactivity, only SG500 (pEC50 = 5.2 ± 0.06 showed reduction in carbachol contractile potency. Indomethacin caused a higher contractile response to carbachol in SG150 and SG500. For relaxation, curves for SG150 (pEC50 = 5.0 ± 0.05) and SG500 (pEC50 = 7:3 ± 0:02) were shifted to the left, more so in SG500. We observed an increase in nitrite in the trachea only with supplementation of 500 mg/kg (54.0 ± 8.0 µM), also when compared to SG50 (37.0 ± 10.0 µM) and SG150 (38.0 ± 7.0 µM). We observed a decrease in lipid peroxidation in the plasma and an increase in oxidation inhibition for the trachea and lung in SG150 and SG500, suggesting enhanced antioxidant activity. S. platensis (150/500 mg/kg) decreased the contractile response and increased relaxation by increasing antioxidant activity and nitrite levels and modulating the inflammatory response.
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Affiliation(s)
- Aline de F Brito
- School of Physical Education, University of Pernambuco, Recife, Brazil.,Post-Graduation Program in Physical Education UPE/UFPB, Recife, Brazil
| | - Alexandre S Silva
- Post-Graduation Program in Physical Education UPE/UFPB, Recife, Brazil.,Physical Education Department, Health Sciences Center, Federal University of Paraiba, João Pessoa, Brazil
| | - Alesandra A de Souza
- Post-Graduation Program in Physical Education UPE/UFPB, Recife, Brazil.,Federal University of Tocantins, Licentiate in Physical Education, Tocantinopolis, Brazil
| | - Paula B Ferreira
- Postgraduate Program in Natural and Synthetic Products Bioactive, Health Sciences Center, Federal University of Paraiba, João Pessoa, Brazil
| | - Iara L L de Souza
- Department of Biological Sciences and Health, Roraima State University, Boa Vista, Brazil
| | - Layanne C da C Araujo
- Department of Biophysics and Physiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Bagnólia A da Silva
- Postgraduate Program in Natural and Synthetic Products Bioactive, Health Sciences Center, Federal University of Paraiba, João Pessoa, Brazil.,Pharmaceutical Sciences Department, Health Sciences Center, Federal University of Paraiba, João Pessoa, Brazil
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2
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de Melo ICAR, de Souza ILL, Vasconcelos LHC, Scotti MT, da Silva BA, Schripsema J, Fonseca AH, Oliveira EJ. Metabolomic fingerprinting of Cissampelos sympodialis Eichler leaf extract and correlation with its spasmolytic activity. J Ethnopharmacol 2020; 253:112678. [PMID: 32087317 DOI: 10.1016/j.jep.2020.112678] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 02/10/2020] [Accepted: 02/14/2020] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cissampelos sympodialis Eichler (Menispermaceae) is popularly used in northeastern Brazil for the treatment of respiratory diseases such as bronchitis and asthma. Despite many pre-clinical pharmacological studies, the compounds mediating the anti-asthma activity of polar extracts of Cissampelos sympodialis leaves have not been definitively identified. AIM OF THE STUDY Aim of the study: The aim of the study was to investigate the correlation between the bioactivity of polar extracts prepared from the leaves of C. sympodialis and the chemical composition using a 1H-NMR-based metabolomics approach. MATERIAL AND METHODS The metabolic profile of the leaf polar extract during different phenological stages of the plant was investigated using 1H NMR spectroscopy while simultaneously screening for spasmolytic activity using guinea-pig tracheal preparations. The content of the alkaloids previously implicated in the bioactivity of Cissampelos sympodialis was determined by HPLC. RESULTS PCA analysis of the 1H NMR data discriminated the extracts from different plant phenological stages. The contents of the major alkaloids decrease (from 2 ± 0.32 μg/mL for warifteine and 1 ± 0.14 μg/mL for methylwarifteine) to undetectable levels from 90 (CsL90 extract) and 120 (CsL120) days onwards for warifteine and methylwarifteine, respectively. All six extracts relaxed the trachea pre-contracted with carbachol, but the CsF210 extract was more potent (EC50 = 74.6 ± 7.9 μg/mL) compared to both CsL90 extracts and CsL180 in the presence of functional epithelium. PLS regression analysis of 1H-NMR spectral data demonstrated that the spasmolytic activity was better correlated with signals for flavonol derivatives. CONCLUSIONS Our data challenge the idea that warifteine and methylwarifteine mediate the spasmolytic activity of the polar extract of C. sympodialis leaves.
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Affiliation(s)
- Ingrid C A R de Melo
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, PB, CEP 58051-970, Brazil.
| | - Iara L L de Souza
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, PB, CEP 58051-970, Brazil.
| | - Luiz H C Vasconcelos
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, PB, CEP 58051-970, Brazil.
| | - Marcus T Scotti
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, PB, CEP 58051-970, Brazil.
| | - Bagnólia A da Silva
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, João Pessoa, PB, CEP 58051-970, Brazil.
| | - Jan Schripsema
- Grupo Metabolômica, Laboratório de Ciências Químicas, Universidade Estadual do Norte Fluminense, Av. Alberto Lamego, 2000, Campos dos Goytacazes, RJ, CEP 28013-602, Brazil.
| | - Aventino H Fonseca
- Departamento de Farmácia e Bioquímica, Universidade Federal dos Vales do Jequitinhonha e Mucurí, Rodovia MGT 367, Km 583, MG, CEP: 39100-000, Brazil.
| | - Eduardo J Oliveira
- Departamento de Farmácia e Bioquímica, Universidade Federal dos Vales do Jequitinhonha e Mucurí, Rodovia MGT 367, Km 583, MG, CEP: 39100-000, Brazil.
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3
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Brito ADF, Silva AS, de Souza AA, Ferreira PB, de Souza ILL, Araujo LCDC, Félix GDS, Sampaio RDS, Silva MDCC, Tavares RL, Pereira RDA, Miranda Neto M, da Silva BA. Aortic Response to Strength Training and Spirulina platensis Dependent on Nitric Oxide and Antioxidants. Front Physiol 2018; 9:1522. [PMID: 30429798 PMCID: PMC6220060 DOI: 10.3389/fphys.2018.01522] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Accepted: 10/11/2018] [Indexed: 01/06/2023] Open
Abstract
Studies have shown that supplementation with Spirulina platensis improves vascular reactivity. However, it is unclear whether in association with strength training this effect can be enhanced. Thus, this study aimed to determine the effects of strength training and S. platensis on the reactivity of the aorta from Wistar rat and the possible mechanisms involved. The animals were supplemented with S. platensis and divided into sedentary (SG, SG50, SG150, and SG500) and trained groups (TG, TG50, TG150, and TG500). Nitrite, malondialdehyde (MDA) and antioxidant activity were determined by biochemical assays. To evaluate vascular response, cumulative concentration—response curves to phenylephrine (PHE) and acetylcholine (ACh) were constructed. L-NAME was used to assess the participation of nitric oxide (NO). It was observed that the PHE contractile potency was reduced in TG50, TG150, and TG500 groups compared to SG50, SG150, and SG500 groups, respectively. However, the presence of L-NAME increased the contractile response in all groups. Strength training potentiated the increase in relaxing activity induced by S. platensis, where the pCE50 values of ACh increased in TG150 and TG500. These responses were accompanied by increased nitrite production, MDA reduction and increased antioxidant activity in the aorta of both TG150 and TG500 groups. Thus, the present study demonstrated that combined with strength training, S. platensis potentiates vascular improvement through the participation of NO and reduction of oxidative stress.
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Affiliation(s)
- Aline de Freitas Brito
- School of Physical Education, University of Pernambuco, Recife, Brazil.,Post-Graduation Program in Physical Education UPE/UFPB, Recife, Brazil
| | - Alexandre S Silva
- Post-Graduation Program in Physical Education UPE/UFPB, Recife, Brazil.,Physical Education Department, Health Sciences Center, Federal University of Paraiba, João Pessoa, Brazil
| | - Alesandra A de Souza
- Federal University of Tocantins, Licentiate in Physical Education, Tocantinópolis, Brazil
| | - Paula B Ferreira
- Postgraduate Program in Natural and Synthetic Products Bioactive, Health Sciences Center, Federal University of Paraiba, João Pessoa, Brazil
| | - Iara L L de Souza
- Postgraduate Program in Natural and Synthetic Products Bioactive, Health Sciences Center, Federal University of Paraiba, João Pessoa, Brazil
| | - Layanne C da Cunha Araujo
- Department of Biophysics and Physiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | | | - Renata de Souza Sampaio
- Postgraduate Program in Natural and Synthetic Products Bioactive, Health Sciences Center, Federal University of Paraiba, João Pessoa, Brazil
| | - Maria da Conceição C Silva
- Postgraduate Program in Natural and Synthetic Products Bioactive, Health Sciences Center, Federal University of Paraiba, João Pessoa, Brazil
| | - Renata L Tavares
- Laboratory of Studies of Physical Training Applied to the Performance and the Health, Health Sciences Center, Federal University of Paraiba, João Pessoa, Brazil
| | | | - Manoel Miranda Neto
- Laboratory of Studies of Physical Training Applied to the Performance and the Health, Health Sciences Center, Federal University of Paraiba, João Pessoa, Brazil
| | - Bagnólia A da Silva
- Postgraduate Program in Natural and Synthetic Products Bioactive, Health Sciences Center, Federal University of Paraiba, João Pessoa, Brazil.,Pharmaceutical Sciences Department, Health Sciences Center, Federal University of Paraiba, João Pessoa, Brazil
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de Souza ILL, Ferreira EDS, Diniz AFA, Carvalho MTDL, Queiroga FR, Toscano LT, Silva AS, da Silva PM, Cavalcante FDA, da Silva BA. Effects of Redox Disturbances on Intestinal Contractile Reactivity in Rats Fed with a Hypercaloric Diet. Oxid Med Cell Longev 2018; 2018:6364821. [PMID: 30498560 PMCID: PMC6222220 DOI: 10.1155/2018/6364821] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Accepted: 09/27/2018] [Indexed: 12/20/2022]
Abstract
Few studies have associated the effects of changes in caloric intake and redox disturbances in the gastrointestinal tract. Therefore, the present study aimed at evaluating the hypercaloric diet consumption influence on the contractile reactivity of intestinal smooth muscle, morphology, and oxidative stress of rat ileum. Wistar rats were randomly divided into groups that received a standard diet and fed with a hypercaloric diet for 8 weeks. Animals were euthanized, and the ileum was isolated to isotonic contraction monitoring. Morphology was evaluated by histological staining and oxidative stress by quantification of malondialdehyde levels and total antioxidant activity. Cumulative concentration-response curves to KCl and carbachol were attenuated in rats fed with a hypercaloric diet compared to those that received a standard diet. In addition, an increase in caloric intake promotes a rise in the thickness of the longitudinal smooth muscle layer of rat ileum and tissue malondialdehyde levels, characterizing lipid peroxidation, as well as a decrease in the antioxidant activity. Thus, it was concluded that the consumption of a hypercaloric diet impairs rat intestinal contractility due to mechanisms involving modifications in the intestinal smooth muscle architecture triggered by redox disturbances.
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Affiliation(s)
- Iara L. L. de Souza
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
- Departamento de Fisiologia e Patologia, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
| | - Elba dos S. Ferreira
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
| | - Anderson F. A. Diniz
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
| | | | - Fernando R. Queiroga
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
| | - Lydiane T. Toscano
- Departamento de Educação Física, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
| | - Alexandre S. Silva
- Departamento de Educação Física, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
| | - Patrícia M. da Silva
- Programa de Pós-graduação em Biologia Celular e Molecular, Centro de Ciências Exatas e da Natureza, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
| | - Fabiana de A. Cavalcante
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
- Departamento de Fisiologia e Patologia, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
| | - Bagnólia A. da Silva
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
- Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
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de Souza ILL, Barros BC, de Oliveira GA, Queiroga FR, Toscano LT, Silva AS, Silva PM, Interaminense LFL, Cavalcante FDA, da Silva BA. Hypercaloric Diet Establishes Erectile Dysfunction in Rat: Mechanisms Underlying the Endothelial Damage. Front Physiol 2017; 8:760. [PMID: 29085300 PMCID: PMC5649200 DOI: 10.3389/fphys.2017.00760] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 09/19/2017] [Indexed: 01/06/2023] Open
Abstract
Obesity is characterized by an excessive increase in body mass, leading to endothelial damage that may favor the development of erectile dysfunction (ED). ED is defined as the inability to achieve or maintain a penile erection long enough to have a sexual intercourse. In this context, different ED models were developed, however the high price of special animals or the long period to establish the disease has limited studies in this field. Therefore, this study proposed to establish and characterize a novel model of ED in rats associated to a hypercaloric diet consumption. Animals were randomly divided into control group (CG), which received a standard diet, and obese group (OG), fed with a hypercaloric diet during 8 weeks. Rat's erectile function was evaluated in vivo and in vitro. Food and caloric intake of OG were reduced compared to CG, due to an increased diet energy efficiency. However, OG presented an increased body mass, inguinal, retroperitoneal and epididymal adipose tissues, as well as body adiposity index at the end of experimental protocol. In erectile function analysis, there was a decrease in the number and the latency of penile erections in OG. Additionally, the contractile reactivity of corpus cavernosum was increased in OG, favoring penile detumescence and related to a reduced nitric oxide bioavailability and an increased in contractile prostaglandins levels as a consequence of endothelial damage. Moreover, the endothelium-relaxation reactivity of corpus cavernosum was attenuated in OG associated to the oxidative stress. Thus, it was provided a model for advances in sexual dysfunction field and drug discovery for ED treatment.
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Affiliation(s)
- Iara L L de Souza
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Bárbara C Barros
- Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Brazil
| | | | - Fernando R Queiroga
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Lydiane T Toscano
- Departamento de Educação Física, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Alexandre S Silva
- Departamento de Educação Física, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Patrícia M Silva
- Programa de Pós-graduação em Biologia Celular e Molecular, Centro de Ciências Exatas e da Natureza, Universidade Federal da Paraíba, João Pessoa, Brazil
| | | | - Fabiana de Andrade Cavalcante
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Brazil.,Departamento de Fisiologia e Patologia, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Bagnólia A da Silva
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Brazil.,Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, Brazil
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6
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Araujo LCDC, de Souza ILL, Vasconcelos LHC, Brito ADF, Queiroga FR, Silva AS, da Silva PM, Cavalcante FDA, da Silva BA. Acute Aerobic Swimming Exercise Induces Distinct Effects in the Contractile Reactivity of Rat Ileum to KCl and Carbachol. Front Physiol 2016; 7:103. [PMID: 27047389 PMCID: PMC4796008 DOI: 10.3389/fphys.2016.00103] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 03/03/2016] [Indexed: 11/23/2022] Open
Abstract
Aerobic exercise promotes short-term physiological changes in the intestinal smooth muscle associated to the ischemia-reperfusion process; however, few studies have demonstrated its effect on the intestinal contractile function. Thus, this work describes our observations regarding the influence of acute aerobic swimming exercise in the contractile reactivity, oxidative stress, and morphology of rat ileum. Wistar rats were divided into sedentary (SED) and acutely exercised (EX-AC) groups. Animals were acclimated by 10, 10, and 30 min of swimming exercise in intercalated days 1 week before exercise. Then they were submitted to forced swimming for 1 h with a metal of 3% of their body weight attached to their body. Animals were euthanized immediately after the exercise section and the ileum was suspended in organ baths for monitoring isotonic contractions. The analysis of lipid peroxidation was performed in order to determinate the malondialdehyde (MDA) levels as a marker of oxidative stress, and intestinal smooth muscle morphology by histological staining. Cumulative concentration-response curves to KCl were altered in the EX-AC with an increase in both its efficacy and potency (Emax = 153.2 ± 2.8%, EC50 = 1.3 ± 0.1 × 10−2 M) compared to the SED group (Emax = 100%, EC50 = 1.8 ± 0.1 × 10−2 M). Interestingly, carbachol had its efficacy and potency reduced in the EX-AC (Emax = 67.1 ± 1.4%, EC50 = 9.8 ± 1.4 × 10−7 M) compared to the SED group (Emax = 100%, EC50 = 2.0 ± 0.2 × 10−7 M). The exercise did not alter the MDA levels in the ileum (5.4 ± 0.6 μ mol/mL) in the EX-AC compared to the SED group (8.4 ± 1.7 μ mol/mL). Moreover, neither the circular nor the longitudinal smooth muscle layers thickness were modified by the exercise (66.2 ± 6.0 and 40.2 ± 2.6 μm, respectively), compared to the SED group (61.6 ± 6.4 and 34.8 ± 3.7 μm, respectively). Therefore, the ileum sensitivity to contractile agents is differentially altered by the acute aerobic swimming exercise, without affecting the oxidative stress and the morphology of ileum smooth muscle.
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Affiliation(s)
- Layanne C da Cunha Araujo
- Programa de Pós-graduação em Biologia Celular e Molecular, Centro de Ciências Exatas e da Natureza, Universidade Federal da Paraíba João Pessoa, Brazil
| | - Iara L L de Souza
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba João Pessoa, Brazil
| | - Luiz H C Vasconcelos
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba João Pessoa, Brazil
| | - Aline de Freitas Brito
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba João Pessoa, Brazil
| | - Fernando R Queiroga
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba João Pessoa, Brazil
| | - Alexandre S Silva
- Departamento de Educação Física, Centro de Ciências da Saúde, Universidade Federal da Paraíba João Pessoa, Brazil
| | - Patrícia M da Silva
- Programa de Pós-graduação em Biologia Celular e Molecular, Centro de Ciências Exatas e da Natureza, Universidade Federal da ParaíbaJoão Pessoa, Brazil; Departamento de Biologia Molecular, Centro de Ciências Exatas e da Natureza, Universidade Federal da ParaíbaJoão Pessoa, Brazil
| | - Fabiana de Andrade Cavalcante
- Departamento de Fisiologia e Patologia, Centro de Ciência da Saúde, Universidade Federal da Paraíba João Pessoa, Brazil
| | - Bagnólia A da Silva
- Programa de Pós-graduação em Biologia Celular e Molecular, Centro de Ciências Exatas e da Natureza, Universidade Federal da ParaíbaJoão Pessoa, Brazil; Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da ParaíbaJoão Pessoa, Brazil; Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Federal da ParaíbaJoão Pessoa, Brazil
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7
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Clementino-Neto J, Pereira JC, Vasconcelos LHC, de Souza ILL, Silva ADS, Silva TMG, Ramos NSM, Pessôa HLF, Silva TMS, da Silva BA, de Cavalcante FA. Toxicological, Antidiarrheal and Spasmolytic Activities of Solanum paniculatum. Planta Med 2016; 82:58-64. [PMID: 26366752 DOI: 10.1055/s-0035-1557831] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Solanum paniculatum is popularly known as "jurubeba-verdadeira". In folk medicine, its roots, stems, and leaves are used as tonics, anti-inflammatories, carminatives, diuretics, and for gastrointestinal disorders. This species is listed in the Brazilian Pharmacopoeia and belongs to the "Relação Nacional de Plantas Medicinais de Interesse ao SUS". Based on folk medicine data of the Solanum genus, we decided to investigate whether the crude ethanol extract from S. paniculatum aerial parts presents toxicological, antidiarrheal, and spasmolytic activities. The crude ethanol extract from S. paniculatum aerial parts did not produce in vitro or in vivo toxicity and showed dose-dependent antidiarrheal activity, inhibiting equipotently both the defecation frequency (ED50 = 340.3 ± 35.1 mg/kg) and liquid stool formation (ED50 = 370.1 ± 19.4 mg/kg) in mice. Conversely, the crude ethanol extract from S. paniculatum aerial parts did not inhibit normal intestinal transit, even though it has shown a dose-dependent reduction of both the castor oil-induced intestinal transit (Emax = 36.9 ± 1.3 %, ED50 = 242.0 ± 8.6 mg/kg) and intestinal fluid content (Emax = 74.8 ± 2.4 %, ED50 = 328.9 ± 15.9 mg/kg). Additionally, the crude ethanol extract from S. paniculatum aerial parts was approximately 2-fold more potent in antagonizing the phasic contractions induced with histamine (IC50 = 63.7 ± 3.5 µg/mL) than carbachol 10(-6) M (IC50 = 129.3 ± 14.1 µg/mL). Therefore, we concluded that the crude ethanol extract from S. paniculatum aerial parts presents antidiarrheal activity in mice related to the inhibition of small intestinal motility and secretion as well as nonselective spasmolytic activity on the guinea pig ileum.
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Affiliation(s)
- José Clementino-Neto
- Programa de Pós-graduação em Ciências Farmacêuticas, Escola de Enfermagem e Farmácia, Universidade Federal de Alagoas, Maceió, AL, Brazil
| | - Joedna C Pereira
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
| | - Luiz H C Vasconcelos
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
| | - Iara L L de Souza
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
| | - Anne D S Silva
- Programa de Pós-graduação em Química e Biotecnologia/Instituto de Química, Universidade Federal de Alagoas, Maceió, AL, Brazil
| | - Telma M G Silva
- Departamento de Ciências Moleculares, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
| | - Natalia S M Ramos
- Departamento de Ciências Moleculares, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
| | - Hilzeth L F Pessôa
- Departamento de Biologia Molecular, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
| | - Tania M S Silva
- Departamento de Ciências Moleculares, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
| | - Bagnólia A da Silva
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
| | - Fabiana A de Cavalcante
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
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Vasconcelos LHC, Correia ACDC, de Souza ILL, Silva MDCC, Paredes-Gamero EJ, Santos BVDO, Cavalcante FDA, da Silva BA. Flavonoid galetin 3,6-dimethyl ether attenuates guinea pig ileum contraction through K(+) channel activation and decrease in cytosolic calcium concentration. Eur J Pharmacol 2015; 767:52-60. [PMID: 26452514 DOI: 10.1016/j.ejphar.2015.10.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 09/23/2015] [Accepted: 10/02/2015] [Indexed: 11/27/2022]
Abstract
Flavonoid galetin 3,6-dimethyl ether (FGAL) has been isolated from the aerial parts of Piptadenia stipulaceae and has shown a spasmolytic effect in guinea pig ileum. Thus, we aimed to characterize its relaxant mechanism of action. FGAL exhibited a higher relaxant effect on ileum pre-contracted by histamine (EC50=1.9±0.4×10(-7) M) than by KCl (EC50=2.6±0.5×10(-6) M) or carbachol (EC50=1.8±0.4×10(-6) M). The flavonoid inhibited the cumulative contractions to histamine, as well as to CaCl2 in depolarizing medium nominally Ca(2+)-free. The flavonoid relaxed the ileum pre-contracted by S-(-)-Bay K8644 (EC50=9.5±1.9×10(-6) M) but less potently pre-contracted by KCl or histamine. CsCl attenuated the relaxant effect of FGAL (EC50=1.1±0.3×10(-6) M), but apamin or tetraethylammonium (1mM) had no effect (EC50=2.6±0.2×10(-7) and 1.6±0.3×10(-7) M, respectively), ruling out the involvement of small and big conductance Ca(2+)-activated K(+) channels (SKCa and BKCa, respectively). Either 4-aminopyridine or glibenclamide attenuated the relaxant effect of FGAL (EC50=1.8±0.2×10(-6) and 1.5±0.5×10(-6) M, respectively), indicating the involvement of voltage- and ATP-sensitive K(+) channels (KV and KATP, respectively). FGAL did not alter the viability of intestinal myocytes in the MTT assay and decreased (88%) Fluo-4 fluorescence, indicating a decrease in cytosolic Ca(2+) concentration. Therefore, the relaxant mechanism of FGAL involves pseudo-irreversible noncompetitive antagonism of histaminergic receptors, KV and KATP activation and blockade of CaV1, thus leading to a reduction in cytosolic Ca(2+) levels.
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Affiliation(s)
- Luiz H C Vasconcelos
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, Campus I, 58051-970 João Pessoa, Paraíba, Brazil
| | - Ana C de C Correia
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, Campus I, 58051-970 João Pessoa, Paraíba, Brazil
| | - Iara L L de Souza
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, Campus I, 58051-970 João Pessoa, Paraíba, Brazil
| | - Maria da C C Silva
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, Campus I, 58051-970 João Pessoa, Paraíba, Brazil
| | - Edgar J Paredes-Gamero
- Departamento de Biofísca, Universidade Federal de São Paulo, 04021-001 São Paulo, São Paulo, Brazil
| | - Bárbara V de O Santos
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, Campus I, 58051-970 João Pessoa, Paraíba, Brazil; Departamento de Ciências Farmacêuticas, Universidade Federal da Paraíba, Campus I, 58051-900 João Pessoa, Paraíba, Brazil
| | - Fabiana de A Cavalcante
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, Campus I, 58051-970 João Pessoa, Paraíba, Brazil; Departamento de Fisiologia e Patologia, Universidade Federal da Paraíba, Campus I, 58051-900 João Pessoa, Paraíba, Brazil.
| | - Bagnólia A da Silva
- Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, Universidade Federal da Paraíba, Campus I, 58051-970 João Pessoa, Paraíba, Brazil; Departamento de Ciências Farmacêuticas, Universidade Federal da Paraíba, Campus I, 58051-900 João Pessoa, Paraíba, Brazil
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