Protective effect of Astragali radix extract on interleukin 1beta-induced in fl ammation in human amnion.
The aim of this study was to investigate the effect of Astragali radix extract on interleukin (IL)-6 and tumour necrosis factor (TNF)-alpha production and prostaglandin E(2) (PGE(2)) and leukotriene C(4) (LTC(4)) release from IL-1beta-stimulated human amnion. Primary monolayer cultures of amnion cells were established from women undergoing elective caesarean section before the onset of labour. Production of both IL-6 and TNF-alpha was stimulated in a concentration-dependent manner by proinflammatory cytokine IL-1beta (0.01-10 ng/mL). Astragalus extract inhibited IL-6 production by approximately 75% from cells under IL-1beta-stimulated conditions. Treatment of amnion cells with IL-1beta (0.01-10 ng/mL) resulted in a significant increase in PGE(2) release. Incubation of the cells with the extract for 24 h significantly inhibited IL-1beta-induced PGE(2) production. A concentration-dependent increase in LTC(4) production by amnion cells occurred in response to IL-1beta. Astragalus extract blocked the effect of IL-1beta in LTC(4) production in human amnion. These results indicate that Astragali radix has a broad antiinflammatory effect in human amnion and may be considered a promising agent to protect preterm labour.
Shon
Yun-Hee
YH
Department of Pharmacology, College of Medicine and Intractable Disease Research Center, Dongguk University, Kyongju 780-714, Korea.
Nam
Kyung-Soo
KS
D000650:Amnion / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D027883:Astragalus Plant; D002478:Cells, Cultured / Q000187:drug effects; D015232:Dinoprostone / Q000378:metabolism; D004305:Dose-Response Relationship, Drug; D005260:Female; D006801:Humans; D015850:Interleukin-6 / Q000096:biosynthesis*; D017997:Leukotriene C4 / Q000378:metabolism; D008517:Phytotherapy; D010936:Plant Extracts / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D018517:Plant Roots; D011247:Pregnancy; D014409:Tumor Necrosis Factor-alpha / Q000096:biosynthesis*
D000894:Anti-Inflammatory Agents, Non-Steroidal; D015850:Interleukin-6; D010936:Plant Extracts; D014409:Tumor Necrosis Factor-alpha; D017997:Leukotriene C4; D015232:Dinoprostone