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포공영(蒲公英)에 의한 뇌 소교세포에서 산화질소 (NO)의 생성
임미양,문석재,Im, Mi-Yang,Moon, Seok-Jae 대한한방내과학회 1999 大韓韓方內科學會誌 Vol.20 No.1
Nitric oxide (NO) is now recognized as a mediator of several biological and immunological functions, but unlike classical neurotransmitters. NO simply diffuse of the postsynaptic cells and around affecting cells. Taraxacum officinale (Compositae) has been used for maintenance of vitality, and they still occupy an important place in the traditional Korean medicine. We have examined that the effect of Taraxacum officinale water extract on NO synthesis in microglial cells of murine's brain, using the Griess method. And this study was evident that Taraxacum officinale did not induce NO production without recombinant interferon gamma ($rIFN-{\gamma}$), whereas Taraxacum officinale (10-1000 g/ml) with $rIFN-{\gamma}$ effectively produced NO in microglial cells of brain. As result. NO production in microglial cells increased most significantly in dose of 100 g/ml of the Taraxacum officinale and the production of NO was dependent on the dose of Taraxacum officinale, NG-monomethyl-L-arginine, competitive inhibitor of NO synthase, reduced the NO production by Taraxacum officinale stimulation with $rIFN-{\gamma}$ in microglial cells of murine. The effect of Taraxacum officinale was mainly dependent on Taraxacum officinale-induced tumor necrosis factor- secretion. Conclusively, this study suggested that Taraxacum officinale stimulate NO production at microglial cells in brain, which may be an important factor for mediating immune and neuroendocrinologic regulation in nervous system.
문구,문석재,원진희,김태균,배남규,이종덕,임미양 대한동의병리학회 2001 동의생리병리학회지 Vol.15 No.5
The Solanum Iyratum Thunb. (Solanaceae) has been used against allergic disease for generations, and it still occupies an important place in traditional oriental medicine. In this study, the author investigated the effect of an aqueous extract of Solanum Iyratum on immediate-type hypersensitivity by anal administration. Anal administration of Solanum Iyratum showed a marked inhibition rate in systemic hypersensitivity with a dose of 0.1, 1 g/kg 1 hr before intraperitoneal injection of compound 48/80. Anal administration of Solanum Iyratum significantly reduced plasma histamine contents induced by compound 48/80. Anal administration of Solarium Iyratum (0.1 g/kg) also inhibited to 61.2%(P〈0.01) local allergic reaction activated by anti-dinitrophenyl (DNP) lgE significantly. In addition, Solanum Iyratum dose-dependency inhibited the histamine release from the peritoneal mast cells by compound 48/80 or anti-DNP IgE, When Solanum Iyratum was added, the level of cAMP in peritoneal mast cells transiently and significantly increased compared with that of basal cells. These results provide evidence that anal therapy of Solanum Iyratum may be beneficial in the treatment of systemic and local immediate-type hypersensitivity by inhibition of histamine release from mast cells in vivo and in vitro.