TY - JOUR
T1 - Involvement of heme oxygenase-1 in kaempferol-induced anti-allergic actions in RBL-2H3 cells
AU - Hirose, Etsuko
AU - Matsushima, Miyoko
AU - Takagi, Kenzo
AU - Ota, Yui
AU - Ishigami, Keiko
AU - Hirayama, Tatsuya
AU - Hayashi, Yuta
AU - Nakamura, Toshinobu
AU - Hashimoto, Naozumi
AU - Imaizumi, Kazuyoshi
AU - Baba, Kenji
AU - Hasegawa, Yoshinori
AU - Kawabe, Tsutomu
N1 - Funding Information:
This work was supported in part by the Grant-in-Aid for the Scientific Research from the Japan Society for the Promotion of Science, and Grant-in-Aid of Nagono Medical Foundation (Nagoya, Japan), and Ichihara International Scholarship Foundation (Nagoya, Japan).
PY - 2009/4
Y1 - 2009/4
N2 - Kaempferol is one of the most commonly found dietary flavonoids. The exposure to kaempferol is known to inhibit degranulation from mast cells, but the inhibitory mechanism of degranulation has not been clarified yet. In this study, we investigated the involvement of heme oxygenase (HO)-1 in the anti-allergic action of kaempferol against degranulation in rat basophilic leukemia (RBL-2H3) cells. Our results demonstrate upregulation of HO enzymatic activity after short (15 min) exposure to kaempferol, followed by the induction of HO-1 expression in protein. The involvement of HO-1 in the kaempferol-induced inhibition of degranulation was confirmed using tin protoporphyrin IX (SnPP), a HO-1 inhibitor. These findings strongly suggest that kaempferol exerts anti-allergic actions via activation of the HO-1.
AB - Kaempferol is one of the most commonly found dietary flavonoids. The exposure to kaempferol is known to inhibit degranulation from mast cells, but the inhibitory mechanism of degranulation has not been clarified yet. In this study, we investigated the involvement of heme oxygenase (HO)-1 in the anti-allergic action of kaempferol against degranulation in rat basophilic leukemia (RBL-2H3) cells. Our results demonstrate upregulation of HO enzymatic activity after short (15 min) exposure to kaempferol, followed by the induction of HO-1 expression in protein. The involvement of HO-1 in the kaempferol-induced inhibition of degranulation was confirmed using tin protoporphyrin IX (SnPP), a HO-1 inhibitor. These findings strongly suggest that kaempferol exerts anti-allergic actions via activation of the HO-1.
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U2 - 10.1007/s10753-009-9108-4
DO - 10.1007/s10753-009-9108-4
M3 - Article
C2 - 19214725
AN - SCOPUS:62149096485
SN - 0360-3997
VL - 32
SP - 99
EP - 108
JO - Inflammation
JF - Inflammation
IS - 2
ER -