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Mourão MRN, Macedo CAF, Ribeiro TF, Brito MC, Menezes PMN, de Medeiros FS, Ribeiro FPRDA, de Lima JT, Moura MPDS, Souza FS. Carvacrol-Loaded Nanoemulsion Promotes Tocolytic and Anti-Dysmenorrhea Effects in Rodents. Pharmacology 2023; 109:115-120. [PMID: 38113867 DOI: 10.1159/000535350] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 11/16/2023] [Indexed: 12/21/2023]
Abstract
INTRODUCTION Carvacrol is a phenolic constituent of essential oils that has antinociceptive, anti-inflammatory, and antioxidant activities. METHOD This study aimed to evaluate the in vitro spasmolytic and in vivo anti-dysmenorrhea potential of a nanoemulsion-containing carvacrol (nanoCARV). RESULTS In isolated rat uterus, nanoCARV reduced spontaneous contractions (pEC50 = 3.91 ± 0.25) and relaxed preparations pre-contracted with oxytocin (pEC50 = 3.78 ± 0.2), carbachol (pEC50 = 4.15 ± 0.4), prostaglandin F2α (pEC50 = 3.00 ± 0.36), and KCl (pEC50 = 3.98 ± 0.32). The investigation of the mechanism of action revealed significant differences (p < 0.05) between the pEC50 values of nanoCARV in the absence or presence of aminophylline or tetraethylammonium. In a primary dysmenorrhea model, treatment with nanoCARV reduced the number of oxytocin-induced abdominal writhes. CONCLUSIONS These data indicate that the anti-dysmenorrhea effect of nanoCARV may be related to the relaxation of uterine smooth muscle, with participation of the cAMP signaling pathway and potassium channels.
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Affiliation(s)
- Mirla Rossana Nogueira Mourão
- Programa de Pós-Graduação em Biociências, Universidade Federal do Vale do São Francisco (UNIVASF), Petrolina,, Brazil
| | - Cícero André Ferreira Macedo
- Programa de Pós-Graduação em Biotecnologia, Universidade Estadual de Feira de Santana (UEFS), Feira de Santana, Brazil
| | - Tiago Feitosa Ribeiro
- Rede Nordeste de Biotecnologia, Universidade Federal Rural de Pernambuco (UFRPE), Recife, Brazil
| | - Mariana Coelho Brito
- Programa de Pós-Graduação em Biotecnologia, Universidade Estadual de Feira de Santana (UEFS), Feira de Santana, Brazil
| | - Pedro Modesto Nascimento Menezes
- Laboratório de Farmacologia Experimental, Colegiado de Farmácia, Universidade Federal do Vale do São Francisco (UNIVASF), Petrolina, Brazil
| | - Felipe Santana de Medeiros
- Programa de Pós-Graduação em Biociências, Universidade Federal do Vale do São Francisco (UNIVASF), Petrolina,, Brazil
| | | | - Julianeli Tolentino de Lima
- Laboratório de Farmacologia Experimental, Colegiado de Farmácia, Universidade Federal do Vale do São Francisco (UNIVASF), Petrolina, Brazil
| | | | - Fabrício Souza Souza
- Programa de Pós-Graduação em Biociências, Universidade Federal do Vale do São Francisco (UNIVASF), Petrolina,, Brazil
- Programa de Pós-Graduação em Biotecnologia, Universidade Estadual de Feira de Santana (UEFS), Feira de Santana, Brazil
- Laboratório de Farmacologia Experimental, Colegiado de Farmácia, Universidade Federal do Vale do São Francisco (UNIVASF), Petrolina, Brazil
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Menezes PMN, Pereira ECV, Lima KSB, Silva BAOD, Brito MC, Araújo TCDL, Neto JA, Ribeiro LADA, Silva FS, Rolim LA. Chemical Analysis by LC-MS of Cannabis sativa Root Samples from Northeast Brazil and Evaluation of Antitussive and Expectorant Activities. Planta Med 2022; 88:1223-1232. [PMID: 34715694 DOI: 10.1055/a-1628-2299] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Cannabis sativa is a millenary medicinal plant. However, contrary to worldwide paradigm-shifting, countries like Brazil still prohibit C. sativa cultivation and its medicinal use, even though many populations use aerial parts and roots of this plant for healthcare. As such, the objective of this work was to identify substances in the samples of the C. sativa roots, tracing a correlation with antitussive and expectorant effects. Therefore, samples of C. sativa roots were donated by the Polícia Federal Brasileira, and its aqueous extract (AECsR) was prepared with subsequent lyophilization, to maintain the material stability. After that, the material was analyzed by LC-MS to observe its chemical profile. Four samples (AECsR-A, B, C, and D) were tested in animal models of citric acid-induced cough (0.4 M) and phenol red expectoration (500 mg/kg). Using LC-MS it was possible to identify 5 molecules in C. sativa roots: p-coumaroyltyramine, tetrahydrocannabinol-C4, feruoiltyramine, anhydrocanabisativine, and cannabisativine. In experimental protocols, male mice (Mus musculus) were treated with samples of AECsR at doses of 12.5, 25, or 50 mg/kg regardless of the pharmacological test. In these tests, all samples showed the potential to treat cough and promote fluid expectoration, differing only in the dose at which these effects were observed. Therefore, the data showed that the C. sativa roots of the Brazilian Northeast showed antitussive and expectorant effects, even with intense secondary metabolites' variation, which alters its potency, but not its effect. This highlights the importance of this medicinal plant for future therapy and corroborates to traditional use.
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Affiliation(s)
| | | | - Kátia Simoni Bezerra Lima
- Universidade Federal do Vale do São Francisco - UNIVASF, Colegiado de Enfermagem (CENF), Petrolina/PE - Brasil
| | | | - Mariana Coelho Brito
- Pós-graduação em Biotecnologia - PPGBIOTEC, Universidade Estadual de Feira de Santana - UEFS, Feira de Santana/BA - Brasil
| | | | - Janaine Almeida Neto
- Pós-graduação em Biociências - PGB, Universidade Federal do Vale do São Francisco - UNIVASF, Petrolina/PE - Brasil
| | | | - Fabrício Souza Silva
- Pós-graduação em Biotecnologia - PPGBIOTEC, Universidade Estadual de Feira de Santana - UEFS, Feira de Santana/BA - Brasil
- Universidade Federal do Vale do São Francisco - UNIVASF, Colegiado de Farmácia (CFARM), Petrolina/PE - Brasil
| | - Larissa Araújo Rolim
- Pós-graduação em Biotecnologia - RENORBIO, Universidade Federal Rural de Pernambuco- UFRPE, Recife/PE - Brasil
- Pós-graduação em Biociências - PGB, Universidade Federal do Vale do São Francisco - UNIVASF, Petrolina/PE - Brasil
- Universidade Federal do Vale do São Francisco - UNIVASF, Colegiado de Farmácia (CFARM), Petrolina/PE - Brasil
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Macêdo CAF, Paiva GOD, Menezes PMN, Ribeiro TF, Brito MC, Vilela DAD, Duarte Filho LAMDS, Ribeiro FPRDA, Lucchese AM, Lima JTD, Silva FS. Lippia origanoides essential oil induces tocolytic effect in virgin rat uterus and inhibits writhing in a dysmenorrhea mouse model. J Ethnopharmacol 2022; 290:115099. [PMID: 35167934 DOI: 10.1016/j.jep.2022.115099] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 01/25/2022] [Accepted: 02/07/2022] [Indexed: 06/14/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The species Lippia origanoides Kunth, popularly known as "salva-de-marajó", is used in Brazilian traditional "quilombola" communities to treat menstrual cramps and uterine inflammation. AIM OF THE STUDY Evaluate the spasmolytic activity of Lippia origanoides essential oil (LOO) on experimental models of uterine conditions related to menstrual cramps and investigate its mechanism of action. MATERIALS AND METHODS Virgin rat-isolated uterus was mounted in the organ bath apparatus to evaluate the spasmolytic effect of LOO on basal tonus and contractions induced by carbachol, KCl, or oxytocin. We used pharmacological agents to verify the relaxation mechanism of LOO. The evaluation of uterine contractility in virgin rats, after treatment with LOO for three consecutive days, was carried out by the construction of a concentration-response curve with oxytocin or carbachol. The primary dysmenorrhea animal model was replicated with an injection of estradiol cypionate in female mice for three consecutive days, followed by intraperitoneal application of oxytocin. RESULTS LOO relaxed the rat uterus precontracted with 10-2 IU/mL oxytocin (logEC50 = 1.98 ± 0.07), 1 μM carbachol (logEC50 = 1.42 ± 0.07) or 60 mM KCl (logEC50 = 1.53 ± 0.05). It was also able relax uterus on spontaneous contractions (logEC50 = 0.41 ± 0.05). Preincubation with glibenclamide, propranolol, phentolamine or L-NAME in contractions induced by carbachol did not alter significantly the relaxing effect of LOO. However, in the presence of 4-aminopyridine, CsCl or tetraethylammonium there was a reduction of LOO potency, whereas the blockers methylene blue, ODQ, aminophylline and heparin potentiated the LOO relaxing effect. Preincubation with LOO in a Ca2+ free medium at concentrations of 27 μg/mL or 81 μg/mL reduced the contraction induced by carbachol. The administration of LOO for 3 days did not alter uterus contractility. The treatment with LOO at 30 or 100 mg/kg intraperitoneally, or 100 mg/kg orally, inhibited writhing in female mice. The association of LOO at 10 mg/kg with nifedipine or mefenamic acid potentiated writhing inhibition in mice. CONCLUSIONS The essential oil of L. origanoides has tocolytic activity in rat isolated uterus pre-contracted with KCl, oxytocin, or carbachol. This effect is possibly related to the opening of potassium channels (Kir, KV, and KCa), cAMP increase, and diminution of intracellular Ca2+. This relaxant effect, probably, contributed to reduce the number of writhings in an animal model of dysmenorrhea being potentiated by nifedipine or mefenamic acid. Taken together, the results here presented indicate that this species has a pharmacological potential for the treatment of primary dysmenorrhea, supporting its use in folk medicine.
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Affiliation(s)
| | - Gabriela Olinda de Paiva
- Laboratório de Farmacologia Experimental, Colegiado de Farmácia, Universidade Federal do Vale do São Francisco (UNIVASF), Brazil.
| | - Pedro Modesto Nascimento Menezes
- Laboratório de Farmacologia Experimental, Colegiado de Farmácia, Universidade Federal do Vale do São Francisco (UNIVASF), Brazil; Rede Nordeste de Biotecnologia, Universidade Federal Rural de Pernambuco (UFRPE), Brazil.
| | - Tiago Feitosa Ribeiro
- Rede Nordeste de Biotecnologia, Universidade Federal Rural de Pernambuco (UFRPE), Brazil.
| | - Mariana Coelho Brito
- Laboratório de Farmacologia Experimental, Colegiado de Farmácia, Universidade Federal do Vale do São Francisco (UNIVASF), Brazil.
| | | | | | | | - Angélica Maria Lucchese
- Laboratório de Química de Produtos Naturais e Bioativos, Departamento de Ciências Exatas, Universidade Estadual de Feira de Santana (UEFS), Brazil.
| | - Julianeli Tolentino de Lima
- Laboratório de Farmacologia Experimental, Colegiado de Farmácia, Universidade Federal do Vale do São Francisco (UNIVASF), Brazil.
| | - Fabrício Souza Silva
- Pós-graduação em Biociênicas, Universidade Federal do Vale do São Francisco (UNIVASF), Brazil; Laboratório de Farmacologia Experimental, Colegiado de Farmácia, Universidade Federal do Vale do São Francisco (UNIVASF), Brazil.
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Menezes PMN, Araújo TCDL, Pereira ECV, Neto JA, Silva DS, Brito MC, Lima KSB, Monte APOD, Matos MHTD, Lima RSD, Ribeiro LADA, Silva FS, Rolim LA. Investigation of antinociceptive, antipyretic, antiasthmatic, and spasmolytic activities of Brazilian Cannabis sativa L. roots in rodents. J Ethnopharmacol 2021; 278:114259. [PMID: 34058314 DOI: 10.1016/j.jep.2021.114259] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 01/29/2021] [Revised: 05/13/2021] [Accepted: 05/25/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Many studies are performed with the aerial parts of Cannabis sativa L. (Cannabaceae). However, roots remain poorly studied, despite citations in the scientific literature. The C. sativa roots are indicated for the treatment of pain, inflammation, fever, among other health problems. AIM OF THE STUDY This study aimed to evaluate the antinociceptive, antipyretic, antiasthmatic, and spasmolytic activities of C. sativa roots in experimental models using mice and rats. MATERIAL AND METHODS The chemical composition of the aqueous extract of C. sativa roots (AECsR) was evaluated by LC-MS. The antinociceptive activity was assessed in mice by the induction of writhing with acetic acid, paw licking with formalin, and reactivity in the hot plate test. Fever was induced by the administration of a suspension of Saccharomyces cerevisiae in young rats. The asthmatic activity was performed with ovalbumin (OVA)-immunized mice with cellular and histological analysis. Finally, the spasmolytic activity was performed using mice isolated trachea. For in vivo studies, the doses were 12.5, 25, or 50 mg/kg whereas for in vitro, the concentration of AECsR was 729 μg/mL. RESULTS From the LC-MS data, we identified p-coumaroyltyramine, feruloyltyramine canabissativine in AECsR. The extract promoted a reduction of writhing in all tested doses (12.5, 25, or 50 mg/kg). Similarly, it reduced the pain in the formalin test at doses of 12.5 and 50 mg/kg (first phase) and 12.5 and 25 mg/kg (second phase). In the hot plate test, the doses of 12.5, 25, and 50 mg/kg promoted antinociceptive effect at different times, and the lowest dose maintained its action in the analyzes performed at 60, 90, and 120 min after administration. The anti-inflammatory activity of AECsR was observed in the mouse model of asthma, reducing the total leukocyte count in the bronchoalveolar fluid (BALF) at a dose of 25 mg/kg, as well as reducing eosinophilia in all tested doses (12.5, 25, and 50 mg/kg). Histological analysis of lungs stained with H&E and PAS showed a reduction in the number of inflammatory cells in the perivascular and peribronchial region, as well as reduced mucus production. CONCLUSION The results suggest that AECsR promotes pain control, either by a central or inflammatory mechanism, and has antiasthmatic activity. However, there was no antipyretic or spasmolytic effect.
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Affiliation(s)
| | | | | | - Janaine Almeida Neto
- Pós-graduação em Biociências - PGB, Universidade Federal do Vale do São Francisco - UNIVASF, Petrolina/PE, Brazil.
| | - David Souza Silva
- Pós-graduação em Biociências - PGB, Universidade Federal do Vale do São Francisco - UNIVASF, Petrolina/PE, Brazil.
| | - Mariana Coelho Brito
- Pós-graduação em Biotecnologia - PPGB, Universidade Estadual de Feira de Santana - UEFS, Feira de Santana-BA, Brazil.
| | | | | | | | | | - Luciano Augusto de Araújo Ribeiro
- Pós-graduação em Biociências - PGB, Universidade Federal do Vale do São Francisco - UNIVASF, Petrolina/PE, Brazil; Universidade Federal do Vale do São Francisco - UNIVASF, Petrolina/PE, Brazil.
| | - Fabrício Souza Silva
- Pós-graduação em Biociências - PGB, Universidade Federal do Vale do São Francisco - UNIVASF, Petrolina/PE, Brazil; Pós-graduação em Biotecnologia - PPGB, Universidade Estadual de Feira de Santana - UEFS, Feira de Santana-BA, Brazil; Universidade Federal do Vale do São Francisco - UNIVASF, Petrolina/PE, Brazil.
| | - Larissa Araújo Rolim
- Pós-graduação em Biotecnologia - RENORBIO, Universidade Federal Rural de Pernambuco- UFRPE, Recife/PE, Brazil; Pós-graduação em Biociências - PGB, Universidade Federal do Vale do São Francisco - UNIVASF, Petrolina/PE, Brazil; Universidade Federal do Vale do São Francisco - UNIVASF, Petrolina/PE, Brazil.
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Vilela DAD, Silva BAO, Brito MC, Menezes PMN, Bomfim HF, Duarte-Filho LAMDS, Silva TRDS, Ribeiro LADA, Lucchese AM, Silva FS. Lippia alnifolia essential oil induces relaxation on Guinea-pig trachea by multiple pathways. J Ethnopharmacol 2020; 246:112162. [PMID: 31419501 DOI: 10.1016/j.jep.2019.112162] [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: 10/25/2018] [Revised: 07/22/2019] [Accepted: 08/11/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Lippia alnifolia Mart. & Schauer, known as "alecrim-do-mato", "alecrim-de-vaqueiro" and "pedrécio", is used in folk medicine as antiseptic and to treat diseases that affect respiratory system, like bronchitis and asthma. AIM OF THE STUDY The aim of this work was to investigate the spasmolytic activity and relaxant mechanism of the Lippia alnifolia essential oil (EOLA) on isolated guinea-pig trachea and to correlate with its use in folk medicine. MATERIALS AND METHODS Leaves from L. alnifolia were collected in Pico das Almas, Chapada Diamantina, situated in the city of Rio de Contas, Bahia, Brazil. EOLA was extracted by hydrodistillation, analyzed by GC/FID and GC/MS and the volatile constituents were identified. Spasmolytic activity was assayed in isolated guinea-pig trachea pre-contracted with carbachol 1 μM or histamine 10 μM. Relaxant mechanism of EOLA was determined comparing concentration-response curves in the presence or absence of different blockers. RESULTS Chemical analysis revealed the presence of carvone (60 ± 0.8%) as major constituent. EOLA (1-243 μg/mL) relaxed isolated guinea-pig trachea pre-contracted with carbachol 1 μM [EC50 = 53.36 (44.75-63.51) μg/mL] or histamine 10 μM [EC50 = 5.42 (4.42-6.65) μg/mL]. The pre-incubation of 4-aminopyridine in histamine-induced contractions did not alter significantly the relaxant effect of EOLA. However, the presence of cesium chloride, glibenclamide, tetraethylammonium, propranolol, indomethacin, dexamethasone, hexamethonium, atropine, L-NAME, methylene blue or ODQ reduced EOLA relaxant effect. EOLA 18 μg/mL pre-incubation in calcium-free medium reduced histamine-evoked contractions, but did not alter histamine contractions in the presence of nifedipine. CONCLUSIONS Lippia alnifolia essential oil has spasmolytic activity on isolated guinea-pig trachea and its mechanism of action possibly involves the activation of multiple signal transduction pathways, which culminate in potassium channels activation and cytosolic calcium reduction.
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Affiliation(s)
| | | | - Mariana Coelho Brito
- Laboratório de Farmacologia Experimental, Colegiado de Farmácia, Universidade Federal do Vale do São Francisco (UNIVASF), Brazil.
| | | | - Horácio Freitas Bomfim
- Laboratório de Química de Produtos Naturais e Bioativos, Departamento de Ciências Exatas, Universidade Estadual de Feira de Santana (UEFS), Brazil.
| | | | | | - Luciano Augusto de Araújo Ribeiro
- Pós-graduação em Biociências, Universidade Federal do Vale do São Francisco (UNIVASF), Brazil; Laboratório de Farmacologia Experimental, Colegiado de Farmácia, Universidade Federal do Vale do São Francisco (UNIVASF), Brazil.
| | - Angélica Maria Lucchese
- Laboratório de Química de Produtos Naturais e Bioativos, Departamento de Ciências Exatas, Universidade Estadual de Feira de Santana (UEFS), Brazil.
| | - Fabrício Souza Silva
- Pós-graduação em Biociências, Universidade Federal do Vale do São Francisco (UNIVASF), Brazil; Laboratório de Farmacologia Experimental, Colegiado de Farmácia, Universidade Federal do Vale do São Francisco (UNIVASF), Brazil.
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Menezes PMN, Brito MC, de Sá PGS, Ribeiro LADA, Rolim LA, Silva FS. Analytical and pharmacological validation of the quantification of phenol red in a mouse model: An optimized method to evaluate expectorant drugs. J Pharmacol Toxicol Methods 2019; 98:106586. [PMID: 31132413 DOI: 10.1016/j.vascn.2019.106586] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 05/07/2019] [Accepted: 05/15/2019] [Indexed: 10/26/2022]
Abstract
INTRODUCTION The evaluation of expectorant activity has been extensively studied in murine models, involving the secretion of phenol red in the trachea or bronchus to estimate the secretory capacity of lower airway mucosa. However, differences in the experimental protocols of several studies evidenced the need of to standardize the quantification of phenol red in the bronchoalveolar fluid (BALF). METHODS The analytical methodology for the quantification of phenol red in the BALF was optimized by investigation of pH influence, quantity of the alkali agent added and appropriate wavelength for quantification of phenol red by UV-VIS spectroscopy. Different phenol red suspensions (0.05, 0.5, 1.25, 2.5 and 5%) were prepared and administered intraperitoneally in mice at doses 5, 25, 50, 250 or 500 mg/kg. RESULTS It was shown that phenol red should be used at dose 500 mg/kg and intraperitoneal administration should be performed from a suspension at 1.25% (w/v). Furthermore, the alkalinizing agent of choice would be NaOH (0.1 M). The pharmacological validation of the analytical method showed that ambroxol (30, 60 or 120 mg/kg), guaifenesin (100 mg/kg), NH4Cl (2000 mg/kg) or salbutamol (4 mg/kg) can be used as positive controls. DISCUSSION The phenol red quantification in the BALF is a rapid and low cost assay for the discovery of new expectorant drugs. Thus, it was proposed a standardization of the analytical and pharmacological methods to ensure the reliability of BALF processing and reproducibility of phenol red quantification for data analysis.
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Affiliation(s)
- Pedro Modesto Nascimento Menezes
- Programa de Pós-graduação em Biociências, Universidade do Vale do São Francisco, Avenida José de Sá Maniçoba S/N, 56304-917 Petrolina, PE, Brazil
| | - Mariana Coelho Brito
- Colegiado de Farmácia, Universidade do Vale do São Francisco, Avenida José de Sá Maniçoba S/N, 56304-917 Petrolina, PE, Brazil
| | - Pedro Guilherme Sousa de Sá
- Programa de Pós-graduação em Ciências dos Materiais, Universidade do Vale do São Francisco, Avenida Antônio C. Magalhães, 510, 48902-300 Juazeiro, BA, Brazil
| | - Luciano Augusto de Araújo Ribeiro
- Programa de Pós-graduação em Biociências, Universidade do Vale do São Francisco, Avenida José de Sá Maniçoba S/N, 56304-917 Petrolina, PE, Brazil; Colegiado de Farmácia, Universidade do Vale do São Francisco, Avenida José de Sá Maniçoba S/N, 56304-917 Petrolina, PE, Brazil
| | - Larissa Araújo Rolim
- Programa de Pós-graduação em Biociências, Universidade do Vale do São Francisco, Avenida José de Sá Maniçoba S/N, 56304-917 Petrolina, PE, Brazil; Programa de Pós-graduação em Ciências dos Materiais, Universidade do Vale do São Francisco, Avenida Antônio C. Magalhães, 510, 48902-300 Juazeiro, BA, Brazil
| | - Fabrício Souza Silva
- Programa de Pós-graduação em Biociências, Universidade do Vale do São Francisco, Avenida José de Sá Maniçoba S/N, 56304-917 Petrolina, PE, Brazil; Colegiado de Farmácia, Universidade do Vale do São Francisco, Avenida José de Sá Maniçoba S/N, 56304-917 Petrolina, PE, Brazil.
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Menezes PMN, Brito MC, de Paiva GO, Dos Santos CO, de Oliveira LM, de Araújo Ribeiro LA, de Lima JT, Lucchese AM, Silva FS. Relaxant effect of Lippia origanoides essential oil in guinea-pig trachea smooth muscle involves potassium channels and soluble guanylyl cyclase. J Ethnopharmacol 2018; 220:16-25. [PMID: 29609011 DOI: 10.1016/j.jep.2018.03.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 08/04/2017] [Revised: 03/17/2018] [Accepted: 03/29/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Lippia origanoides H.B.K. is an aromatic species used in folk medicine to treat respiratory diseases, including asthma. AIM OF THE STUDY The aim of this work was to evaluate the relaxing potential and mechanism of action of the L. origanoides (LOO) essential oil in isolated guinea-pig trachea. MATERIALS AND METHODS Leaves from L. origanoides were collected at experimental fields under organic cultivation, at the Forest Garden of Universidade Estadual de Feira de Santana. Essential oil was extracted by hydrodistillation, analyzed by GC/FID and GC/MS and the volatile constituents were identified. Spasmolytic activity and relaxant mechanism of LOO were assayed in isolated guinea-pig trachea contracted with histamine, carbachol or hyperpolarizing KCl. RESULTS Chemical analysis revealed the presence of carvacrol (53.89%) as major constituent. LOO relaxed isolated guinea-pig trachea pre-contracted with KCl 60 mM [EC50 = 30.02 μg/mL], histamine 1 µM [EC50 = 9.28 μg/mL] or carbachol 1 µM [EC50 = 51.80 μg/mL]. The pre-incubation of glibenclamide, CsCl, propranolol, indomethacin, hexamethonium, aminophylline or L-NAME in histamine-induced contractions did not alter significantly the relaxant effect of LOO. However, the presence of 4-aminopyridine, tetraethylammonium or methylene blue reduced LOO effect, while the presence of dexamethasone or atropine potentialized the LOO relaxant effect. LOO pre-incubation inhibited carbachol-evoked contractions, with this effect potentialized in the presence of sodium nitroprusside and blocked in the presence of ODQ. CONCLUSIONS The relaxant mechanism of LOO on the tracheal smooth muscle possibly involves stimulating of soluble guanylyl cyclase with consequent activation of the voltage-gated and Ca2+-activated K+ channels.
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Affiliation(s)
| | - Mariana Coelho Brito
- Colegiado de Farmácia, Universidade Federal do Vale do São Francisco (UNIVASF), Brazil.
| | | | | | - Lenaldo Muniz de Oliveira
- Horto Florestal, Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana (UEFS), Brazil.
| | - Luciano Augusto de Araújo Ribeiro
- Pós-graduação em Recursos Naturais do Semiárido, Universidade Federal do Vale do São Francisco (UNIVASF), Brazil; Colegiado de Farmácia, Universidade Federal do Vale do São Francisco (UNIVASF), Brazil.
| | - Julianeli Tolentino de Lima
- Pós-graduação em Recursos Naturais do Semiárido, Universidade Federal do Vale do São Francisco (UNIVASF), Brazil; Colegiado de Farmácia, Universidade Federal do Vale do São Francisco (UNIVASF), Brazil.
| | - Angélica Maria Lucchese
- Laboratório de Química de Produtos Naturais e Bioativos, Departamento de Ciências Exatas, Universidade Estadual de Feira de Santana (UEFS), Brazil.
| | - Fabrício Souza Silva
- Pós-graduação em Recursos Naturais do Semiárido, Universidade Federal do Vale do São Francisco (UNIVASF), Brazil; Colegiado de Farmácia, Universidade Federal do Vale do São Francisco (UNIVASF), Brazil.
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Menezes PMN, Oliveira HRD, Brito MC, Paiva GOD, Ribeiro LADA, Lucchese AM, Silva FS. Spasmolytic and antidiarrheal activities of Lippia thymoides (Verbenaceae) essential oil. Nat Prod Res 2018; 33:2571-2573. [PMID: 29614872 DOI: 10.1080/14786419.2018.1457665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Lippia thymoides ('alecrim-do-mato' or 'alecrim-do-campo') is used in Brazilian folk medicine to treat various illnesses, including diarrhea. This work aimed to evaluate in vitro spasmolytic and in vivo antidiarrheal activities of the L. thymoides essential oil (OOS) and to correlate with the traditional use of this plant. In isolated guinea-pig ileum, OOS presented a concentration-dependent spasmolytic activity in preparations pre-contracted with KCl 40 mM [EC50 = 16.89 (11.56-24.66) μg/mL], and antagonized phasic contractions induced by 1 μM carbachol [IC50 = 42.71 (37.35-48.83) μg/mL] or histamine [IC50 = 32.38 (27.44-38.20) μg/mL]. In mice, OOS at 400 mg/kg reduced intestinal transit, at 200 and 400 mg/kg reduced total stool mass and at 400 mg/kg reduced intestinal fluid accumulation. It was shown that the antidiarrheal effect of OOS is related to the inhibition of smooth muscle contraction and may be due to the presence of major compound β-caryophyllene in this essential oil.
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Affiliation(s)
| | | | - Mariana Coelho Brito
- a Colegiado de Ciências Farmacêuticas , Universidade Federal do Vale do São Francisco , Petrolina , Brazil
| | - Gabriela Olinda de Paiva
- a Colegiado de Ciências Farmacêuticas , Universidade Federal do Vale do São Francisco , Petrolina , Brazil
| | | | - Angélica Maria Lucchese
- b Laboratório de Química de Produtos Naturais e Sintéticos Bioativos , Universidade Estadual de Feira de Santana , Feira de Santana , Brazil
| | - Fabrício Souza Silva
- a Colegiado de Ciências Farmacêuticas , Universidade Federal do Vale do São Francisco , Petrolina , Brazil
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Ribeiro C, Oliveira A, Neves S, Campainha S, Nogueira C, Torres S, Brito MC, Almeida J, e Sá JM. Diagnosis of sarcoidosis in the endobronchial ultrasound-guided transbronchial needle aspiration era. Rev Port Pneumol 2014; 20:237-41. [PMID: 24793333 DOI: 10.1016/j.rppneu.2014.02.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [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: 08/29/2013] [Revised: 02/06/2014] [Accepted: 02/18/2014] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Sarcoidosis is a multisystemic disorder of unknown etiology. Its diagnosis is based on compatible clinical and radiological features and supported by histological demonstration of epithelioid cell noncaseating granulomas with exclusion of other causes. Endobronchial ultrasound combined with transbronchial needle aspiration (EBUS-TBNA) has been proposed as a valuable tool in obtaining suitable tissue sample. The aim of this study was to evaluate the contribution of EBUS-TBNA to the diagnosis of stages I and II thoracic sarcoidosis in a community-based hospital. METHODS A prospective study was conducted in patients with suspected stages I and II pulmonary sarcoidosis, based on clinical and radiological data, who were being followed in our Interstitial Lung Disorders Outpatient Clinic or sent from other hospitals to our Respiratory Endoscopy Unit for diagnostic procedures. All suitable and fit patients underwent EBUS-TBNA between March 2010 and June 2013. We assessed demographic characteristics, radiological stages, cytological/histological examination and diagnostic techniques performed. RESULTS In the period considered 39 patients underwent EBUS-TBNA for suspected stages I and II thoracic sarcoidosis and adequate samples were obtained in 38 (97.4%). Within this population, 33 (84.6%) patients had a definite diagnosis of sarcoidosis, of which 31 patients (93.9%) were confirmed to have epithelioid noncaseating granulomas by EBUS-TBNA. Four patients were submitted to surgical procedures (three to mediastinoscopy and one to open surgical lung biopsy). Data analysis allowed to calculate a sensitivity, specificity, positive predictive value, negative predictive value and diagnostic accuracy of 93.9%, 100%, 100%, 75.0% and 94.8%, respectively. No complications were observed. CONCLUSIONS EBUS-TBNA is a valuable tool in the diagnostic workup of patients with suspected stages I and II thoracic sarcoidosis providing a substantial number of pathological confirmations and with few complications. Its high diagnostic accuracy precludes the need for more invasive procedures such as surgical biopsy.
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Affiliation(s)
- C Ribeiro
- Pulmonology Department, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal.
| | - A Oliveira
- Pulmonology Department, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal; Respiratory Endoscopy Unit, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal
| | - S Neves
- Pulmonology Department, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal; Respiratory Endoscopy Unit, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal; Interstitial Lung Disorders Outpatient Clinic, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal
| | - S Campainha
- Pulmonology Department, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal
| | - C Nogueira
- Interstitial Lung Disorders Outpatient Clinic, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal
| | - S Torres
- Pulmonology Department, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal; Interstitial Lung Disorders Outpatient Clinic, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal
| | - M C Brito
- Pulmonology Department, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal; Interstitial Lung Disorders Outpatient Clinic, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal
| | - J Almeida
- Pulmonology Department, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal; Respiratory Endoscopy Unit, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal
| | - J M e Sá
- Pulmonology Department, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal; Respiratory Endoscopy Unit, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal
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Ribeiro C, Ladeira I, Gaio AR, Brito MC. Pneumococcal pneumonia - Are the new severity scores more accurate in predicting adverse outcomes? Rev Port Pneumol 2013; 19:252-9. [PMID: 23850193 DOI: 10.1016/j.rppneu.2012.09.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2012] [Revised: 09/13/2012] [Accepted: 09/13/2012] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION The site-of-care decision is one of the most important factors in the management of patients with community-acquired pneumonia. The severity scores are validated prognostic tools for community-acquired pneumonia mortality and treatment site decision. The aim of this paper was to compare the discriminatory power of four scores - the classic PSI and CURB65 ant the most recent SCAP and SMART-COP - in predicting major adverse events: death, ICU admission, need for invasive mechanical ventilation or vasopressor support in patients admitted with pneumococcal pneumonia. METHODS A five year retrospective study of patients admitted for pneumococcal pneumonia. Patients were stratified based on admission data and assigned to low-, intermediate-, and high-risk classes for each score. Results were obtained comparing low versus non-low risk classes. RESULTS We studied 142 episodes of hospitalization with 2 deaths and 10 patients needing mechanical ventilation and vasopressor support. The majority of patients were classified as low risk by all scores - we found high negative predictive values for all adverse events studied, the most negative value corresponding to the SCAP score. The more recent scores showed better accuracy for predicting ICU admission and need for ventilation or vasopressor support (mostly for the SCAP score with higher AUC values for all adverse events). CONCLUSIONS The rate of all adverse outcomes increased directly with increasing risk class in all scores. The new gravity scores appear to have a higher discriminatory power in all adverse events in our study, particularly, the SCAP score.
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Affiliation(s)
- C Ribeiro
- Serviço de Pneumologia, Centro Hospitalar de Vila Nova de Gaia/Espinho, Portugal.
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11
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De Lima SG, Feitosa CM, Citó AMGL, Moita Neto JM, Lopes JAD, Leite AS, Brito MC, Dantas SMM, Cavalcante AACM. Effects of immature cashew nut-shell liquid (Anacardium occidentale) against oxidative damage in Saccharomyces cerevisiae and inhibition of acetylcholinesterase activity. Genet Mol Res 2008; 7:806-18. [PMID: 18949700 DOI: 10.4238/vol7-3gmr473] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The cashew tree (Anacardium occidentale) represents one of the major cheapest sources of non-isoprenoid phenolic lipids, which have a variety of biological properties: they can act as molluscicides, insecticides, fungicides, have anti-termite properties, have medicinal applications, and demonstrate antioxidant activity in vitro. Immature cashew nut-shell liquid (iCNSL) is a unique natural source of unsaturated long-chain phenols. Their use has stimulated much research in order to prepare drug analogues for application in several fields. The objective of the present study was to determine whether iCNSL has antioxidant properties when used in strains of the yeast Saccharomyces cerevisiae and to measure the inhibitory activity of acetylcholinesterase. The constituents were identified using thin-layer chromatography, gas chromatography-mass spectrometry, Fourier transform infrared spectroscopy, and (1)H and (13)C nuclear magnetic resonance. The iCNSL contains anacardic acid, cardanol, cardol, and 2-methyl cardol. Immature cashew nut oil contains triacylglycerols, fatty acids, alkyl-substituted phenols, and cholesterol. The main constituents of the free fatty acids are palmitic (C(16:0)) and oleic acid (C(18:1)). iCNSL has excellent protective activities in strains of S. cerevisiae against oxidative damage induced by hydrogen peroxide and inhibits acetylcholinesterase activity. iCNSL may have an important role in protecting DNA against damage induced by reactive oxygen species, as well as hydrogen peroxide, generated by intra- and extracellular mechanisms.
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Affiliation(s)
- S G De Lima
- Departamento de Química, Universidade Federal do Piauí, Centro de Ciências da Natureza, Campus Universitário Ministro Petrônio Portella, Teresina, PI, Brasil
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Kobayashi J, Hasegawa H, Soares EC, Toma H, Dacal AR, Brito MC, Yamanaka A, Foli AA, Sato Y. Studies on prevalence of Strongyloides infection in Holambra and Maceió, Brazil, by the agar plate faecal culture method. Rev Inst Med Trop Sao Paulo 1996; 38:279-84. [PMID: 9216109 DOI: 10.1590/s0036-46651996000400007] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Prevalence of Strongyloides stercoralis infection in three areas of Brazil was surveyed by a recently developed faecal culture method (an agar plate culture). The Strongyloides infection was confirmed in 11.3% of 432 subjects examined. The diagnostic efficacy of the agar plate culture was as high as 93.9% compared to only 28.5% and 26.5% by the Harada-Mori filter paper culture and faecal concentration methods, when faecal samples were examined simultaneously by these three methods. Among the 49 positive samples, about 60% were confirmed to be positive only by the agar plate culture. These results indicate that the agar plate culture is a sensitive new tool for the correct diagnosis of chronic Strongyloides infection.
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Affiliation(s)
- J Kobayashi
- Laboratório de Imunoparasitologia, Gastrocentro, Universidade Estaduat de Campinas, SP. Brasil
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Rog DJ, McCombs-Thornton KL, Gilbert-Mongelli AM, Brito MC, Holupka CS. Implementation of the homeless families program: 2. Characteristics, strengths, and needs of participant families. Am J Orthopsychiatry 1995; 65:514-28. [PMID: 8561185 DOI: 10.1037/h0079675] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The characteristics and needs of homeless families participating in a large-scale services-enriched housing program are examined. Although not a representative sample, participants constitute one of the largest subsets of homeless families in the literature. Moreover, the sample, which encompasses nine sites, is focused on families with multiple problems who have been recurrently homeless. Differing constellations of needs and implications for service delivery are explored.
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Affiliation(s)
- D J Rog
- Vanderbilt University Institute for Public Policy Studies, Center for Mental Health Policy, Washington, D.C., USA
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