Data/hora: 04/06/2024 04:34:55

Provedor de dados: | 48
País: | Chile
Título: | Effects of betamethasone, sulindac and quinacrine drugs on the inflammatory neoangiogenesis response induced by polyurethane sponge implanted in mouse
Autores: | ILLANES,JULIO; DABANCENS,ALFREDO; ACUÑA,OLGA; FUENZALIDA,MARCELA; GUERRERO,ANIBAL; LOPEZ,CLAUDIA; LEMUS,DAVID.
Data: | 2002-01-01
Ano: | 2002
Palavras-chave: | Angiogenesis; Antiangiogenesis; Betamethasone; Sulindac; Quinacrine.
Resumo: | In this study, we showed the effect of the betamethasone, sulindac and quinacrine alone or combined, on the inflammatory angiogenesis promoted by polyurethane sponge on mice. The main finding reported here is that the formation of new blood vessels was strongly inhibited by low concentration of betamethasone, sulindac or quinacrine, whether alone or in combination. It is known that steroidal anti-inflammatory drugs inhibit the enzymes required for the production of prostaglandins through a nuclear glucocorticoid receptor (GR) mediated mechanism. This mechanism may occur in endothelial cells as well. Considering that activity of cyclo-oxigenases 1 and 2 is inhibited by sulindac, and that these enzymes are located in the stromal tissue, we propose that the anti-angiogenic effect of these agents may occur via inhibition of both COX isoforms. On the other hand, quinacrine inhibited PLA2 activity, and we propose here that the anti-angiogenic effect occurs via inhibition of the enzyme PLA2. The potentiated effect of the association of betamethasone, sulindac and quinacrine may have some therapeutic benefit in the control of pathological angiogenesis. Further studies are required to validate these propositions
Tipo: | Journal article
Idioma: | Inglês
Identificador: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602002000300008
Editor: | Sociedad de Biología de Chile
Formato: | text/html
Fonte: | Biological Research  v.35 n.3-4 2002