RESUMO
Achyrocline satureioides, popularly called "marcela" in Brazil, is used in traditional medicine in South America. A. satureioides, inflorescences are used for many conditions, including to minimize the Sars-Cov-2 symptoms. Therefore, the aim of this study was to determine the toxicity profile of A. satureioides aqueous extract (ASAE), using the Caenorhabditis elegans (C. elegans) alternative model. Survival, reproduction, development, and transgenerational assays were performed. The effects of ASAE were investigated under conditions of thermal stress and presence of oxidant hydrogen peroxide (H2O2). In addition, C. elegans strains containing high antioxidant enzyme levels and elevated lineages of daf-16, skn-1 and daf-2 regulatory pathways were examined. The ASAE LC50 value was found to be 77.3 ± 4 mg/ml. The concentration of ASAE 10 mg/ml (frequently used in humans) did not exhibit a significant reduction in worm survival at either the L1 or L4 stage, after 24 or 72 hr treatment. ASAE did not markedly alter the body area. In N2 strain, ASAE (10 or 25 mg/ml) reversed the damage initiated by H2O2. In addition, ASAE protected the damage produced by H2O2 in strains containing significant levels of sod-3, gst-4 and ctl - 1,2,3, suggesting modulation in these antioxidant systems by this plant extract. ASAE exposure activated daf-16 and skn-1 stress response transcriptional pathways independently of daf-2, even under extreme stress. Data suggest that ASAE, at the concentrations tested in C. elegans, exhibits a reliable toxicity profile, which may contribute to consideration for safe use in humans.
Assuntos
Achyrocline , Caenorhabditis elegans , Extratos Vegetais , Animais , Caenorhabditis elegans/efeitos dos fármacos , Extratos Vegetais/toxicidade , Extratos Vegetais/farmacologia , Achyrocline/química , Proteínas de Caenorhabditis elegans/metabolismo , Proteínas de Caenorhabditis elegans/genéticaRESUMO
Achyrocline satureioides (Lam.) DC (Asteraceae) is a native species of the southeastern subtropical and temperate region of South America, popularly known as "marcela" or "macela". This species is recognized, in traditional medicine, by diverse biological activities such as digestive, antispasmodic, anti-inflammatory, antiviral, sedative, hepatoprotective, among others. Some of these activities have been related to the presence of phenolic compounds, including flavonoids, phenolic acids, terpenoids in the essential oils, coumarins and phloroglucinol derivatives reported to the species. The approaches on the technological development of phytopharmaceutical products of this species provided relevant advances in the optimization of the extraction and product obtention, especially spray-dried powders, hydrogels, ointments, granules, films, nanoemulsions and nanocapsules. The most relevant biological activities described for the extracts or derivative products from A. satureioides were antioxidant, neuroprotective, antidiabetic, antiobesity, antimicrobial, anticancer effects, and obstructive sleep apnea syndrome. The scientific and technological findings reported for the species, in conjunction with its traditional use and cultivation, reveal the high potential of the species for diverse industrial applications.
Assuntos
Achyrocline , Achyrocline/química , Extratos Vegetais/química , Estrutura Molecular , Flavonoides/química , Antioxidantes/farmacologia , Antioxidantes/químicaRESUMO
The growing incidence of non-communicable diseases makes the search for natural sources of bioactive compounds a priority for such disease prevention/control. Achyrocline satureioides ('marcela'), a plant rich in polyphenols and native to Brazil, Uruguay, Paraguay, and Argentina, could be used for this purpose. Data on its antidiabetic/antiobesity properties and cellular uptake of bioactive compounds are lacking. The potentiality of non-thermal technologies such as high-hydrostatic pressure (HP) to enhance polyphenol extraction retains attention. Thus, in the present study aqueous and ethanolic marcela extracts with/without assisted-HP processing were chemically characterized and assessed for their in vitro antioxidant capacity, antidiabetic and antiobesity activities, as well as cellular cytotoxicity and uptake on intestinal cell monolayers (TC7-cells, a clone of Caco-2 cells). Aqueous and ethanolic conventional extracts presented different polyphenolic profiles characterized mainly by phenolic acids or flavonoids, respectively, as stated by reverse phase-high-performance liquid chromatography (RP-HPLC) analyses. In general, ethanolic extracts presented the strongest bioactive properties and HP had none or a negative effect on in vitro bioactivities comparing to conventional extracts. TC7-cell viability and cellular uptake demonstrated in conventional and HP-assisted extracts, highlighted the biological effects of marcela bioactive compounds on TC7-cell monolayers. TC7-cell studies showed no HP-induced cytotoxicity. In sum, marcela extracts have great potential as functional ingredients for the prevention/treatment of chronic diseases such as diabetes.
RESUMO
INTRODUCTION: Phenolic compounds present in Achyrocline satureioides are known to have therapeutic benefits like antioxidant, anti-inflammatory, and antitumour properties. The main polyphenols present in the plant are quercetin (QCT), luteolin (LUT), 3-O-methylquercetin (3OMQ), and achyrobichalcone (ACB). However, the effective isolation and purification of these compounds from A. satureioides inflorescences are not an easy task. OBJECTIVE: To develop an efficient high-performance counter-current chromatography (HPCCC) method for quick separation and purification of naturally occurring phenolic compounds from the extract of A. satureioides. METHODOLOGY: A two-step HPCCC semi-preparative isolation method was developed using a solvent system composed of n-hexane/ethyl acetate/methanol/water (0.8:1.0:0.8:1.0) and dichloromethane/methanol/water (3.5:3.5:2.5). RESULTS: The HPCCC method was used to obtain two fractions. The first fraction (F1 ) contained high levels of ACB, among other constituents, while the second fraction (F2 ) contained mostly QCT, LUT, and 3OMQ. Besides the high ACB content, F1 contained three other flavonoid-aglycones (kaempferol, 97.3%; isokaempferide, 92.4%; and 3,3'-di-O-methylquercetin, 95.2%) identified by an ultra-performance liquid chromatography system coupled to a quadrupole time-of-flight with high-definition mass spectrometry (UPLC-QTOF/HDMS) and nuclear magnetic resonance (NMR) analysis. Purity levels of ACB, 3OMQ, QCT, and LUT were 98.0, 97.0, 97.5, and 90.2%, respectively. CONCLUSION: This is the first time that high purity ACB and six other flavonoids were obtained from A. satureioides inflorescences by HPCCC. These excellent results reveal the potential and versatility of HPCCC as a technique to produce different types of products from this plant species on a semi-preparative scale: enriched fractions, new metabolites, or high purity compounds.
Assuntos
Achyrocline/química , Distribuição Contracorrente/métodos , Polifenóis/isolamento & purificação , Biflavonoides/análise , Espectroscopia de Ressonância Magnética Nuclear de Carbono-13/métodos , Luteolina/análise , Extratos Vegetais/química , Polifenóis/normas , Espectroscopia de Prótons por Ressonância Magnética/métodos , Quercetina/análogos & derivados , Quercetina/análise , Padrões de Referência , Espectrofotometria Ultravioleta/métodosRESUMO
Introducción. La enfermedad pulmonar obstructiva crónica (EPOC), caracterizada por limitación del flujo aéreo, constituye una patología con alta prevalencia y mortalidad a nivel mundial, representada por exacerbaciones que requieren escalonar el tratamiento; el abordaje se realiza por medio de medidas farmacológicas y no farmacológicas.Objetivo. Sintetizar los aspectos relevantes de las principales guías de manejo y de los artículos cientí-ficos acerca del tratamiento farmacológico y no farmacológico de la enfermedad pulmonar obstructiva crónica.Método. Revisión descriptiva sobre el tratamiento farmacológico y no farmacológico de la enferme-dad pulmonar obstructiva crónica, a partir de la búsqueda de literatura publicada en bases de datos electrónicas especializadas en salud. Se encontraron 265 documentos, entre artículos y guías, que cumplían con los criterios de búsqueda, se seleccionaron 118, se excluyeron 60 y se analizaron 58 referencias.Conclusión. La enfermedad pulmonar obstructiva crónica tiene alta prevalencia y mortalidad a nivel mundial, por esto hay que diagnosticarla bajo los parámetros de la guía de referencia mundial Global Initiative for Chronic Obstructive Lung Disease y de acuerdo con esto, abordar al paciente de forma integral e instaurándole un manejo farmacológico y no farmacológico individualizado con el fin de aumentar la adherencia al tratamiento, disminuir los síntomas y las exacerbaciones y, por consiguien-te, mejorar la calidad de vida.
Introduction. Chronic obstructive pulmonary disease (COPD) is characterized by airflow limitation, this disease presents a high prevalence and mortality rateworldwide. It is represented by exacerba-tions requiring step therapy. The treatment approach is performed by means of pharmacological and non-pharmacological measures.Objective. To synthesize the most relevant aspects of the main management guidelines and scientific articles about the pharmacological and non-pharmacological treatment of chronic obstructive pul-monary disease.Method. Descriptive review of pharmacological and non-pharmacological treatment of chronic obs-tructive pulmonary disease, by means of a search of literature published by electronic databases spe-cialized in health sciences. 265 documents were found, including articles and guides, which met the search criteria, 118 were selected, 60 were excluded and 58 references were analyzed.Conclusion. Chronic obstructive pulmonary disease has a high prevalence and mortality rate world-wide, thus, it is necessary to diagnose it by following the parameters set by the worldwide reference guide: Global Initiative for Chronic Obstructive Lung Disease.According to these guidelines it is ne-cessary to treat the patient holistically and establish a pharmacological and non-pharmacological individualized management in order to increase adherence to the treatment, reduce symptoms and exacerbations, and thereby, improve the quality of life.
Introdução. A doença pulmonar obstrutiva crônica (DPOC), caracterizada pela limitação do fluxo aéreo, representa uma patologia com alta prevalência e mortalidade em todo o mundo, sendo repre-sentada por exacerbações que requerem um escalonamento do tratamento; a abordagem é realizada por meio de medidas farmacológicas e não farmacológicas.Objetivo. Sintetizar os aspectos relevantes dos principais guias de gestão e artigos científicos sobre o tratamento farmacológico e não farmacológico da doença pulmonar obstrutiva crônica.Método. Revisão descritiva do tratamento farmacológico e não farmacológico da doença pulmonar obstrutiva crônica, baseado na busca bibliográfica de artigos e guias publicados em bases de dados eletrônicas especializadas em saúde. Foram obtidos 265 artigos e guias que preenchiam os critérios de busca, 118 foram selecionados, 60 foram excluídos e 58 referências foram analisadas.Conclusão. A doença pulmonar obstrutiva crônica tem alta prevalência e mortalidade em todo o mundo, por isso deve ser diagnosticada sob os parâmetros da Global Initiative for Chronic Obstructive Lung Disease e de acordo com isso, abordar o paciente de forma integral e instalando um manejo far-macológico e não farmacológico individualizado, a fim de aumentar a adesão ao tratamento, diminuir os sintomas e as exacerbações e, portanto, melhorar a qualidade de vida.
Assuntos
Humanos , Doença Pulmonar Obstrutiva Crônica , Broncodilatadores , Pneumologia , Fumar , Medicina InternaRESUMO
Objetivou-se, neste trabalho, avaliar o crescimento e a produção de biomassa de marcela [Achyrocline satureioides (Lam.) DC.], em cultivo solteiro e consorciado com tansagem (Plantago major L.) e determinar a população de plantas dessas espécies medicinais, em consorciação mais eficiente, visando o aumento produtivo e retorno econômico. Foram constituídos seis tratamentos:duas fileiras de marcela espaçadas de 0,40m (M0,40); duas fileiras de marcela espaçadas de 0,25m (M0,25); duas fileiras de tansagem espaçadas de 0,75m (T0,75); três fileiras de tansagem espaçadas de 0,40m (T0,40); duas fileiras de marcela alternadas com três fileiras de tansagem (M0,40T0,40) e duas fileiras de marcela alternadas com duas fileiras de tansagem (M0,25T0,75). O delineamento experimental foi em blocos casualizados, com quatro repetições. Foram efetuadas colheitas de marcela aos 180, 210 e 225 dias após o transplante. Os tratamentos não influenciaram as alturas das plantas da marcela e da tansagem. As produções da marcela foram influenciadas apenas pelas três épocas de colheita sendo significativamente superior nas duas primeiras, apresentando massas de flores frescas de 2,51, 2,63 e 1,28 t ha-1, respectivamente, aos 180, 210 e 225 dias após o transplante. A massa de folhas frescas da tansagem não foi influenciada pelo consórcio mas foi maior sob o espaçamento T0,40 (6,13 t ha-1) do que sob o T0,75 (3,32 t ha-1). A Razão de Área Equivalente do consórcio M0,40T0,40, foi 1,6 e o de M0,25T0,75 foi 2,4. Quanto à renda bruta observaram-se acréscimos de 30% para o tratamento M0,40T0,40 e 77% para o tratamento M0,25T0,75 comparadas ao tratamento da marcela solteira M025 e de 70% e 131%,respectivamente, em relação à tansagem solteira T0,40.
The objective of this work was to evaluate the growth and the yield of marcela [Achyrocline satureioides (Lam.) DC.] biomass, in a monocrop system and intercropped with common plantain (Plantago major L.) as well as to determine the population of these medicinal plants in a more efficient intercrop system, in order to increase the yield and the economic return. Six treatments were established: two rows of marcela spaced 0.4 m from each other (M0,40), two rows of marcela spaced 0.25 m (M0.25), two rows of common plantain spaced 0.75 m (T0.75), three rows of common plantain spaced 0.40 m (T0.40), two rows of marcela alternated with three rows of common plantain (M0.40T0.40), and two rows of marcela alternated with three rows of common plantain (M0.25T0.75). The experimental design was the randomized blocks with four replications. Harvests of marcela were performed at 180, 210 and, 225 days after the transplantation. The treatments did not influence the heights of marcela and common plantain. Yields of marcela were influenced only by the harvest dates and they were significantly higher in the first and the second dates, showing fresh mass of flowers of 2.51; 2.63 and 1.28 t ha-1, respectively, at 180, 210 and 225 days after the transplantation. Fresh mass of common plantain leaves was not influenced by the intercropping, but it was higher under T0.40 (6.13 t ha-1) space than under T0.75 (3.32 t ha-1). Land Equivalent Ratio of the M0.40 T0.40 intercropping was 1.6 and that of M0.25T0.75 was 2.4. Regarding the gross income, increases of 30% were observed for the treatment M0.40 T0.40 and 77% for the treatment M0.40 T0.40 when compared to the treatment M0.25 and 70% and 131%, respectively, when compared to T0.40.