Studies on phytochemical, antioxidant, anti-inflammatory, hypoglycaemic and antiproliferative activities of Echinacea purpurea and Echinacea angustifolia extracts.

Autor: Aarland RC; a Postgraduate Program in Experimental Biology , Universidad Autónoma Metropolitana, Iztapalapa, Ciudad de México , México., Bañuelos-Hernández AE; b Departamento de Ciencias de la Salud DCBS , Universidad Autónoma Metropolitana-Iztapalapa , Ciudad de México , México., Fragoso-Serrano M; c Departamento de Farmacia, Facultad de Química , Universidad Nacional Autónoma de México , Ciudad de México , México., Sierra-Palacios ED; d Colegio de Ciencias y Humanidades , Universidad Autónoma de la Ciudad de México , Ciudad de México , México., Díaz de León-Sánchez F; b Departamento de Ciencias de la Salud DCBS , Universidad Autónoma Metropolitana-Iztapalapa , Ciudad de México , México., Pérez-Flores LJ; b Departamento de Ciencias de la Salud DCBS , Universidad Autónoma Metropolitana-Iztapalapa , Ciudad de México , México., Rivera-Cabrera F; b Departamento de Ciencias de la Salud DCBS , Universidad Autónoma Metropolitana-Iztapalapa , Ciudad de México , México., Mendoza-Espinoza JA; d Colegio de Ciencias y Humanidades , Universidad Autónoma de la Ciudad de México , Ciudad de México , México.
Jazyk: angličtina
Zdroj: Pharmaceutical biology [Pharm Biol] 2017 Dec; Vol. 55 (1), pp. 649-656.
DOI: 10.1080/13880209.2016.1265989
Abstrakt: Context: Echinacea (Asteraceae) is used because of its pharmacological properties. However, there are few studies that integrate phytochemical analyses with pharmacological effects.
Objective: Evaluate the chemical profile and biological activity of hydroalcoholic Echinacea extracts.
Materials and Methods: Density, dry matter, phenols (Folin-Ciocalteu method), flavonoids (AlCl 3 method), alkylamides (GC-MS analysis), antioxidant capacity (DPPH and ABTS methods), antiproliferative effect (SRB assay), anti-inflammatory effect (paw oedema assay, 11 days/Wistar rats; 0.4 mL/kg) and hypoglycaemic effect (33 days/Wistar rats; 0.4 mL/kg) were determined in three Echinacea extracts which were labelled as A, B and C (A, roots of Echinacea purpurea L. Moench; B, roots, leaves, flowers and seeds of Echinacea purpurea; C, aerial parts and roots of Echinacea purpurea and roots of Echinacea angustifolia DC).
Results: Extract C showed higher density (0.97 g/mL), dry matter (0.23 g/mL), phenols (137.5 ± 2.3 mEAG/mL), flavonoids (0.62 ± 0.02 mEQ/mL), and caffeic acid (0.048 mg/L) compared to A and B. A, B presented 11 alkylamides, whereas C presented those 11 and three more. B decreased the oedema (40%) on day 2 similar to indomethacin. A and C showed hypoglycaemic activity similar to glibenclamide. Antiproliferative effect was only detected for C (IC 50 270 μg/mL; 8171 μg/mL; 9338 μg/mL in HeLa, MCF-7, HCT-15, respectively).
Discussion and Conclusion: The difference in the chemical and pharmacological properties among extracts highlights the need to consider strategies and policies for standardization of commercial herbal extracts in order to guarantee the safety and identity of this type of products.
Databáze: MEDLINE
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