Inhibition of tumour necrosis factor-alpha secretion from rat astrocytes by Sesim-Tang.
Phytother Res
; 16(1): 28-32, 2002 Feb.
Article
en En
| MEDLINE
| ID: mdl-11807961
ABSTRACT
Substance P (SP) can stimulate secretion of tumour necrosis factor-alpha (TNF-alpha) from astrocytes stimulated with lipopolysaccharide (LPS). In this study, we have examined whether an aqueous extract of Sesim-Tang inhibits the secretion of TNF-alpha from primary cultures of rat astrocytes. Sesim-Tang (10-1000 microg/mL) significantly inhibited the TNF-alpha secretion by astrocytes stimulated with LPS and SP. Interleukin-1 (IL-1) has been shown to elevate TNF-alpha secretion from LPS-stimulated astrocytes while having no effect on astrocytes in the absence of LPS. We therefore examined whether IL-1 mediated inhibition of TNF-alpha secretion from primary astrocytes by Sesim-Tang. Treatment with Sesim-Tang (10-1000 microg/mL) of astrocytes stimulated with both LPS and SP decreased IL-1 secretion significantly. Moreover, the secretion of TNF-alpha by LPS and SP in astrocytes was progressively inhibited with increasing amounts of IL-1 neutralizing antibody. Our results suggest that Sesim-Tang may inhibit TNF-alpha secretion by inhibiting IL-1 secretion and that Sesim-Tang has an antiinflammatory activity in the central nervous system.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Plantas Medicinales
/
Extractos Vegetales
/
Astrocitos
/
Factor de Necrosis Tumoral alfa
Límite:
Animals
Idioma:
En
Revista:
Phytother Res
Asunto de la revista:
TERAPIAS COMPLEMENTARES
Año:
2002
Tipo del documento:
Article