Artículos de revistas
Alchornea Glandulosa Ethyl Acetate Fraction Exhibits Antiangiogenic Activity: Preliminary Findings From In Vitro Assays Using Human Umbilical Vein Endothelial Cells
Registro en:
Journal Of Medicinal Food. , v. 14, n. 10, p. 1244 - 1253, 2011.
1096620X
10.1089/jmf.2010.0204
2-s2.0-80054053491
Autor
Lopes F.C.M.
Rocha A.
Pirraco A.
Regasini L.O.
Siqueira J.R.
Silva D.H.S.
Bolzani V.S.
Carlos I.Z.
Soares R.
Institución
Resumen
Alchornea glandulosa has traditionally been used in Brazilian folk medicine for the treatment of immune-inflammatory diseases and as an antiulcer agent to heal gastric ulcer and gastritis. Angiogenesis is a complex multistep process that consists of proliferation, migration, and anastomosis of endothelial cells and has a major role in the development of pathologic conditions, such as inflammatory diseases. To investigate a possible link between the anti-inflammatory activities and antiangiogenic effects of A. glandulosa ethyl acetate fraction (AGF), this study examined which features of the angiogenic process could be disturbed by this fraction. The antiangiogenic activity of AGF was determined in vitro by using human umbilical vein endothelial cells (HUVEC), and cell viability, proliferation, apoptosis, invasion, and capillary-like structures formation were addressed. To elucidate the mechanism of action, nuclear factor κB (NFκB), a transcription factor implicated in these processes, was also evaluated in HUVEC incubated with AGF. A significant decrease in proliferation, a relevant increase in apoptosis, and a strong reduction in invasion capacity (as assessed by bromodeoxyuridine, terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick-end labeling, and double-chamber assays, respectively) were observed. AGF also led to a drastic reduction in the number of capillary-like structures formed when HUVEC were cultured on growth factor-reduced Matrigel-coated plates. In addition, incubation of HUVEC with AGF resulted in reduced NFκB activity. 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