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  • Title: Action of Ulmi radicis cortex extract on systemic and local anaphylaxis in rats.
    Author: Kim HM, Shin HY, Choi IY, Lee EH, Lee EJ.
    Journal: Gen Pharmacol; 1998 Sep; 31(3):483-8. PubMed ID: 9703224.
    Abstract:
    1. To assess the contribution of an aqueous extract of Ulmi radicis cortex (AEURC) in systemic anaphylaxis, compound 48/80 was used as a fatal anaphylaxis inducer in rats. 2. AEURC completely inhibited anaphylactic shock with a dose of 1.0 g/kg body weight (BW) 1 hr before injection of compound 48/80. 3. AEURC significantly inhibited serum histamine levels induced by compound 48/80. 4. AEURC (1.0 g/kg BW) also inhibited by 79.1% passive cutaneous anaphylaxis activated by anti-dinitrophenyl (DNP) IgE. 5. AEURC dose dependently inhibited the histamine release from the rat peritoneal mast cells (RPMCs) by compound 48/80. Moreover, AEURC had a significant inhibitory effect on anti-DNP IgE-induced histamine release and tumor necrosis factor-alpha production from RPMC. 6. The level of cAMP in RPMC, when AEURC was added, significantly increased compared with that of a normal control. 7. These results indicate that AEURC may possess strong antianaphylactic action.
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