RESUMO
Objectives: Obesity, which is a risk factor for diabetes, hypertension, cardiovascular diseases, and cancer, is caused serious health problems and economic costs on a global scale. Nowadays, pancreatic lipase inhibitors that cause inhibition of lipid digestion and lipid absorption are one of the limited treatment approaches for obesity. Plant-derived secondary metabolites can be used for treating obesity. The aim of this study was to research the antiobesity potential of Amaranthus albus L. (Amaranthaceae), Helichrysum compactum Boiss. (Asteraceae), Chenopodium album L. (Chenopodiaceae), and Agrimonia eupatoria L. (Rosaceae). Materials and Methods: To detect the antiobesity potentials of the plants, in vitro lipase inhibitory activity studies by spectroscopic method and quantitative analysis studies of some anti-obesity effective secondary metabolites by reversed-phase high performance liquid chromatography (RP-HPLC) technique were carried out. Results: In vitro lipase inhibitory studies showed that all plant extracts possess lipase inhibitory effect, and the highest lipase inhibitory potential was observed for H. compactum (IC50: 45.70 µg/mL ± 2.3618). According to HPLC analyses, p-coumaric acid (0.27 mg/g) in A. albus; benzoic acid (0.33 mg/g) in C. album; vanillic acid (7.32 mg/g), syringaldehyde (14.97 mg/g), quercetin (4.66 mg/g), p-coumaric acid (0.71 mg/g), and benzoic acid (3.43 mg/g) in H. compactum; p-coumaric acid (0.71 mg/g) and benzoic acid (3.43 mg/g) in A. eupatoria were detected. Conclusion: In conclusion, H. compactum is the most remarkable natural source for the study. The fact remains that all plants may be promising candidates for treating obesity.
RESUMO
The aim of the present study is to determine the potent biological activities and carry out isolation studies on Barbarea integrifolia. The antioxidant capacity of the species was evaluated by total phenolic content, FRAP, CUPRAC, and DPPH radical scavenging activity. Anticancer activity studies were performed by MTT assay in MDA-MB-231, MCF-7, Hep3B, PC-3, A549, HCT116, L-929 cell lines. It was observed that the remaining aqueous fraction has higher total phenolic content while higher activity in the CUPRAC and FRAP assays was displayed for the methanolic extract and chloroform fraction. The extracts showed anticancer activity as compared with vincristine. It was observed that chloroform fraction has the highest anticancer activity on MCF-7 cell line, while ethyl acetate fraction has the highest anticancer activity on Hep-3B and A549 cell lines. Methanolic extract has the highest anticancer activity on HCT116 and MDA-MB-23 cell lines. The isolation studies have been performed using several chromatographic methods. The chemical structures of compounds have been identified by means of 1H NMR, 13C NMR, 2D-NMR, and MS. Five major compounds, one steroid (ß-Sitosterol), one phenolic acid (Rosmarinic acid), one flavonol heteroside (kaempferol 7-O-α-l-rhamnoside-3-O-ß-d-(2-O-ß- d -glucosyl)-ß-d-glucoside), and two glucosinolates (Gluconasturtiin, Gluconasturtiin choline salt) have been isolated.
Assuntos
Antioxidantes/farmacologia , Barbarea/química , Glucosinolatos/farmacologia , Extratos Vegetais/farmacologia , Antineoplásicos Fitogênicos/química , Antineoplásicos Fitogênicos/farmacologia , Antioxidantes/química , Espectroscopia de Ressonância Magnética Nuclear de Carbono-13/métodos , Linhagem Celular Tumoral , Ensaios de Seleção de Medicamentos Antitumorais , Humanos , Extratos Vegetais/química , Espectroscopia de Prótons por Ressonância Magnética/métodosRESUMO
Although several studies have investigated the cytotoxic effects of different Fabaceae species, limited researches have been conducted on the cytotoxic effect of Dorycnium pentaphyllum. The aim of this study was to evaluate the phenolic characterization and the cytotoxic effect of D. pentaphyllum on human cervix (HeLa) and colon (WiDr) cancer cells and the possible mechanisms involved. Total phenolic content (TPC) and phenolic characterization of the extract were investigated using the Folin-Cioceltau method and RP-HPLC, respectively. The cytotoxic effect of the extract was evaluated using the MTT assay. The mechanism involved in the extract's cytotoxic effect was then evaluated in terms of apoptosis and the cell cycle using flow cytometry, while mitochondrial membrane potential (MMP) was investigated using the fluorometric method. The TPC value of the extract was 141.2 ± 0.8 mg gallic acid equivalent per g sample, and quercetin was detected as major phenolics. D. pentaphyllum extract exhibited a selective cytotoxic effect on HeLa and WiDr cells compared to normal fibroblast and colon cells, respectively. The extract induced cell cycle arrest at the S phase and apoptosis via reduced MMP in these cells. Further studies may be useful in developing a natural product based new generation pharmacological agent.