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1.
Article in Portuguese | LILACS, CONASS, ColecionaSUS, SES-GO | ID: biblio-1417336

ABSTRACT

A obesidade é considerada um dos maiores problemas de saúde pública no mundo. É um fator que predispõe outras enfermidades e está relacionada ao aumento da taxa de morbidade e mortalidade. Para o tratamento da obesidade são empregados vários métodos, dentre eles o uso da fitoterapia. O presente estudo teve como objetivo avaliar as evidências científicas sobre a utilização do Phaseolus vulgaris, Cynara scolymus e Camelia sinensis no tratamento da obesidade. Trata-se de uma revisão narrativa da literatura, desenvolvida por meio de levantamento bibliográfico de artigos científicos que relacionavam os fitoterápicos com a obesidade, e publicados nos últimos 10 anos. Foi possível observar que estes fitoterápicos podem ser alternativas para tratamento da obesidade. O Phaseolus vulgaris parece proporcionar importante redução de peso devido à redução da absorção dos carboidratos. A Cynara scolymus possui frutooligossacarideos e a inulina, que alteram o trânsito intestinal e ocasionam uma rápida eliminação do bolo fecal, e, consequentemente, reduz a absorção dos lipídeos que, em excesso, contribuem para a obesidade. A Camelia sinensis aumenta a termogênese e a oxidação lipídica, o que promove gasto energético e o emagrecimento. O tratamento da obesidade pode abranger diferentes alternativas terapêuticas, ressaltando sempre a importância da utilização de fitoterápicos indicados apenas por profissionais habilitados, a fim de se alcançar resultados desejáveis e evitar efeitos adversos


Obesity is considered one of the biggest public health problems in the world. It is a factor that predisposes other diseases and it is related to the increase of the rate of morbidity and mortality. Several methods are employed to treat obesity, among them the use of herbal medicine. The present study aimed to evaluate the scientific evidence on the use of Phaseolus vulgaris, Cynara scolymus and Camelia sinensis in the treatment of obesity. This is a narrative review of the literature, developed through a bibliographical survey of scientific articles that related phytotherapeutics to obesity, and published in the last 10 years. It was possible to observe that these phytotherapics may be alternatives for the treatment of obesity. Phaseolus vulgaris appears to provide significant weight reduction due to reduced absorption of carbohydrates. Cynara scolymus has fructooligosaccharides and inulin, which alter intestinal transit and cause a rapid elimination of faecal cake, and consequently reduces the absorption of lipids that in excess contribute to obesity. Camelia sinensis increases thermogenesis and lipid oxidation, which promotes energy expenditure and weight loss. The treatment of obesity can cover different therapeutic alternatives, always emphasizing the importance of the use of phytotherapics indicated only by qualified professionals, in order to achieve desirable results and avoid adverse effects


Subject(s)
Humans , Phaseolus/adverse effects , Camellia/adverse effects , Cynara scolymus/adverse effects , Phytotherapy , Obesity/therapy , Weight Loss , Prescriptions
2.
Chinese Traditional and Herbal Drugs ; (24): 1109-1113, 2011.
Article in Chinese | WPRIM | ID: wpr-855580

ABSTRACT

Objective: To optimize the technological parameters of separation and purification of cynarin from Cynara scolymus leaves. Methods: Seven different types of macroporous adsorption resins were evaluated on absorptive capacity, desorption rate, and adsorption rate in order to select the best resin and the conditions of the best resin to separate and purify cynarin were researched. Results: It was found that LSA-21 resin showed better comprehensive adsorption property, flow rate of sample loading was 2 BV/h, 3 BV/h 50% alcohol aqueous and 2 BV/h velocity was used to elute. In this process to obtain the product with purity of 5.63% cynarin, ash content of 0.61%, product yield 5.56%, the product quality could meet the market demand. Conclusion: The LSA-21 macroporous adsorption resin shows better comprehensive adsorption property. It could be used to isolate and purify the cynarin.

3.
Braz. j. pharm. sci ; 45(2): 201-208, Apr.-June 2009. graf, tab
Article in English | LILACS | ID: lil-525916

ABSTRACT

The objective of this study was the investigation of a potential influence of artichoke leaf extract (ALE) on the cell physiology and gene expression of phase I/II enzymes of human liver cells HepG2 and investigation on potential cell protective effects against ethanol-induced cell toxicity against HepG2 cells. Cell biological assays under in vitro conditions using HepG2 liver cells and investigation of mitochondrial activity (MTT test), proliferation assay (BrdU incorporation ELISA), LDH as toxicity marker, gene expression analysis by RT-PCR and enzyme activity of glutationtransferase. Artichocke extract, containing 27 percent caffeoylquinic acids and 7 percent flavonoids induced mitochondrial activity, proliferation and total protein content under in vitro conditions in human liver cells HepG2. These effects could not be correlated to the well-known artichoke secondary compounds cynarin, caffeic acid, chlorogenic acid, luteolin and luteolin-7-O-glucoside. The flavones luteolin and luteolin-7-O-glucoside had inhibitory effects at 100 µg/mL level on HepG2 cells, with luteolin being a significant stronger inhibitor compared to the respective glucoside. Artichoke leaf extract had minor stimulating effect on gene expression of CYP1A2, while CYP3A4, GGT, GPX2, GSR and GST were slightly inhibited. GST inhibition under in vitro conditions was also shown by quantification of GST enzyme activity. Induction of gene expression of CYP1A2 was shown to be supraadditive after simultaneous application of ethanol plus artichoke extract. Artichoke leaf extract exhibited cell protective effects against ethanol-induced toxicity within cotreatment under in vitro conditions. Also H2O2 damage was significantly inhibited by simultaneous artichoke incubation. Pre- and posttreatments did not exert protective effects. DMSO-induced toxicity was significantly reduced by pre-, post- and cotreatment with artichoke extract and especially with luteolin-7-O-glucoside...


O objetivo deste estudo foi a investigação de uma potente influência do extrato das folhas da alcachofra (ALE) na fisiologia celular e na expressão gênica de enzimas de fase I/II de células hepáticas humanas HepG2 e investigação no potencial efeito protetor celular em células HepG2 contra toxicidade celular induzida por etanol. Ensaios biológicos de células em condições in vitro usando células de fígado HepG2 e investigação da atividade mitocondrial (teste MTT), ensaio de proliferação, LDH como marcador de toxicidade, análise de expressão gênica por RT-PCR e atividade da enzima glutationa transferase. O extrato da alcachofra, contendo 27 por cento de ácidos cafeoilquínico e 7 por cento de flavonóides, induzem a atividade mitocondrial, proliferação e o teor de proteína total em condições in vitro em células hepáticas humanas HepG2. Estes efeitos não podem ser correlacionados aos compostos secundários conhecidos da alcachofra, cinarina, ácido cafeico, ácido clorogênico, luteolina e luteolin-7-O-glicosídeo. As flavonas luteolina e luteolin-7-O-glicosídeo possuem efeitos inibitórios em nível de 100 µg/mL em células HepG2, com a luteonina sendo uma inibidora significativamente mais forte comparada com o respectivo glicosídeo. O extrato das folhas de alcachofra possui um efeito mínimo da estimulação na expressão gênica de CYP1A2, enquanto CYP3A4, GGT, GPX2, GSR e GST foram sutilmente inibidos. A inibição de GST em condições in vitro também foi mostrada pela quantificação da atividade da enzima GST. Indução da expressão gênica de CYP1A2 mostrou-se supraaditiva após aplicação simultânea do etanol mais o extrato de alcachofra. O extrato das folhas de alcachofra exibiu efeitos protetores celulares frente à toxicidade induzida por etanol em co-tratamento em condições in vitro. Além disso, danos por H2O2 foram significativamente inibidos pela incubação simultânea do extrato de alcachofra. Pré e pós-tratamento não exerceram efeitos protetores. Toxicidade...


Subject(s)
Humans , Biological Assay , Cynara scolymus/chemistry , Hepatocytes , Phytotherapy , Plant Preparations/analysis
4.
Acta toxicol. argent ; 15(1): 1-7, jul. 2007. tab
Article in Spanish | LILACS | ID: lil-564847

ABSTRACT

En sistemas de produccion intensivos, el uso incorrecto de productos fitosanitarios puede afectar la salud de los operarios. El objetivo del trabajo fue determinar sobre el cuerpo del operario aplicador las zonas de deposicion de agroquimico al momento de realizar tratamientos foliares en cultivos horticolas de diferente porte y en monte frutal. Se trabajo en lotes de acelga(Beta vulgaris var cicla L.), de alcaucil (Cynara scolymus L.), de poroto chaucha (Phaseolus vulgaris L.) y en monte de naranjos (Citrus sp.). En cada lote se simularon 4 aplicaciones foliares de fitosanitarios utilizando mochila manual, reemplazando los productos por una soluci¨®n de fenoftaleina (0,5 g/l). En cada aplicacion se recorrieron 100 m entre las hileras de cultivo y previo a cada una de ellas se distribuyeron sobre distintas zonas del cuerpo del operario parches de tela de algodon blanca de10 cm x 10 cm. En laboratorio se recupero el residuo de fenoftaleina de cada parche con hidroxido de sodio 0,1 N y se valoro en espectrofotometro a 540 nm. Los residuos detectados en la parte anterior y posterior del cuerpo del aplicador, respectivamente, fueron: en acelga 1095,6 ¦Ìg/cm2 y 91,02 ¦Ìg/cm2, en alcaucil 787,00 ¦Ìg/cm2 y 404,00 ¦Ìg/cm2, en poroto chaucha 197,50 ¦Ìg/cm2 y 68,35 ¦Ìg/cm2, en monte frutal 481,70 ¦Ìg/cm2 y 44,20 ¦Ìg/cm2. Se demostro la exposicion de todo el cuerpo del operario al realizar tratamientos en condiciones similares a las de estos ensayos, validando la necesidad de contar con elementos de proteccion que lo cubran en forma total.


In intensive production systems, the improper use of phytosanitary products may affect the operator's health. The objective of this work was to determine the areas the agrochemical deposits on the worker¡¯s body, at the time of applying foliar treatments in horticulturalcrops of several heights and in fruit trees. It was performed in lots of Swiss chard (Beta vulgaris var cicla L.), artichoke (Cynara scolymus L.), string bean (Phaseolus vulgaris L.) and in orange (Citrus sp.) groves. In each lot, 4 foliar applications of phitosanitaryproducts were simulated using a backpack sprinkler and replacing the products for a phenophthaleine solution (0.5 g/l). In each application, 100 m among the crop lines were covered and before each of them, 10x 10 cm white cotton cloth patches were laid on different areas of the worker's body. At the laboratory, the residue of phenophthaleine was recovered from each patch by means of 0.1 N sodium hydroxide and it was then valued in a spectrophotometer at 540 nm. Residues detected in the front and the back of the worker¡¯s body were, respectively, in Swiss chard 1095,6 ¦Ìg/cm2 and 91,02 ¦Ìg/cm2, in artichoke 787,00 ¦Ìg/cm2 and 404,00 ¦Ìg/cm2, in string bean 197,50 ¦Ìg/cm2 and 68,35 ¦Ìg/cm2, in orange trees 481,70 ¦Ìg/cm2 and 44,20¦Ìg/cm2. The exposition of the whole body of the worker was demonstrated by performing treatments in conditions similar to those of these trials, validating the need of having protection elements that completely cover it.


Subject(s)
Humans , Crop Production , Agrochemicals , Pesticide Exposure , Argentina , Environmental Exposure
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