Anti-hyperglycemic activity of major compounds from Calea ternifolia
Por:
Escandón-Rivera S., Pérez-Vásquez A., Navarrete A., Hernández M., Linares E., Bye R., Mata R.
Publicada:
1 feb 2017
Resumen:
Demethylisoencecalin (1) and caleins A (4) and C (5) (3.16-31.6 mg/kg, p.o.), the major components from an infusion of Calea ternifolia controlled postprandial glucose levels during an oral sucrose tolerance test (OSTT, 3 g/kg) in normal and nicotinamide/streptozotocin (NA/STZ, 40/100 mg/kg) hyperglicemic mice. The effects were comparable to those of acarbose (5 mg/kg). During the isolation of 1, 4, and 5, four additional metabolites not previously reported for the plant, were obtained, namely 6-acetyl-5-hydroxy-2-methyl-2-hydroxymethyl-2H-chromene (3), herniarin (6), scoparone (7), and 4',7-dimethylapigenin (8). In addition, the structure of calein C (5) was confirmed by X-ray analysis. Pharmacological evaluation of the essential oil of the species (31.6-316.2 mg/kg, p.o.) provoked also an important decrement of blood glucose levels during an OSTT. Gas chromatography coupled with mass spectrometry (GC-MS) analysis of the headspace solid phase microextraction (HS-SPME)-adsorbed compounds and active essential oil obtained by hydrodistillation revealed that chromene 1 was the major component (19.92%); sesquiterpenes represented the highest percentage of the essential oil content (55.67%) and included curcumene (7.10%), spathulenol (12.95%) and caryophyllene oxide (13.0%). A suitable High Performance Liquid Chromatography (HPLC) method for quantifying chromenes 1 and 6-hydroxyacetyl-5-hydroxy-2,2-dimethyl-2H-chromene (2) was developed and validated according to standard protocols. © 2017 by the authors; licensee MDPI.
Filiaciones:
Escandón-Rivera S.:
Univ Nacl Autonoma Mexico, Fac Quim, Mexico City 04510, DF, Mexico
Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico
Pérez-Vásquez A.:
Univ Nacl Autonoma Mexico, Fac Quim, Mexico City 04510, DF, Mexico
Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico
Navarrete A.:
Univ Nacl Autonoma Mexico, Fac Quim, Mexico City 04510, DF, Mexico
Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico
Hernández M.:
Univ Nacl Autonoma Mexico, Fac Quim, Mexico City 04510, DF, Mexico
Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico
Linares E.:
Univ Nacl Autonoma Mexico, Inst Biol, Mexico City 04510, DF, Mexico
Instituto de Biología, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico
Bye R.:
Univ Nacl Autonoma Mexico, Inst Biol, Mexico City 04510, DF, Mexico
Instituto de Biología, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico
Mata R.:
Univ Nacl Autonoma Mexico, Fac Quim, Mexico City 04510, DF, Mexico
Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico
|