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Pharmacological Research 1999-Jul

The evaluation of the antianaphylactic effect of Oryza sativa L. subsp. hsien Ting in rats.

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Krækjan er vistuð á klemmuspjaldið
H M Kim
C S Kang
E H Lee
T Y Shin

Lykilorð

Útdráttur

We studied the effect of the methanol extract of Oryza sativa L. subsp. hsien Ting (OSHT) on anaphylaxis. OSHT (0.001-1.0 mg g-1body weight (BW)) dose-dependently inhibited systemic anaphylaxis induced by compound 48/80 in rats. When OSHT was pretreated at concentrations ranging from 0.001 to 1.0 mg g-1BW, the serum histamine levels were reduced in a dose-dependent manner. OSHT (0. 001-1.0 mg g-1BW) also inhibited local anaphylaxis activated by anti-dinitrophenyl (DNP) IgE. Moreover, OSHT dose-dependently inhibited the histamine release from rat peritoneal mast cells (RPMC) activated by compound 48/80 or anti-DNP IgE. The level of cAMP in RPMC, when OSHT was added, significantly increased approx. 20-fold compared with that of basal cells. These results indicate that OSHT possesses strong antianaphylactic activity by inhibition of histamine release from mast cells in vivo and in vitro.

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