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  • Title: [Effect of daqingye on EP3 mRNA expression of hypothalamus in IL-1beta-induced rabbits].
    Author: Dong J, Qiu S, Xie XH, Pan R, Tang HM, Lu DX.
    Journal: Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi; 2007 Jan; 23(1):42-5. PubMed ID: 17210105.
    Abstract:
    AIM: To study the antipyretic effect and mechanism of Daqingye injection (DQYI). METHODS: The IL-1beta-induced febrile New Zealand rabbits were chosen as experimental models and the antipyretic effect of DQYI was observed. The expression of EP3 mRNA was investigated by using in situ hybridization (ISH) in POAH. RESULTS: First, the colonic temperature went up gradually after intravenous(i.v) IL-1beta. The peak value of temperature(deltaT) and thermal response index (TRI(1)) in IL-1beta-treated group were higher than those in control group (P<0.01). The DeltaT and TRI(1) of in DQYI and IL-1beta- treated group were lower than those in IL-1beta-treated group (P<0.05). The temperature of DQYI-treated group showed no distinguished difference compared with that in control group (P>0.05). Second, the expression of EP3 mRNA in the POAH of IL- 1beta-treated group increased markedly compared with that in control group (P<0.01). The expression of EP3 mRNA treated by IL-1beta+DQYI in the POAH decreased strikingly compared with that in IL-1beta group(P<0.05). CONCLUSION: DQYI has distinct antipyretic effect on IL-1beta-induced fever. The mechanism might be the inhibition of EP3 mRNA expression in POAH from rabbits.
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