解热醒神注射液对内毒素性发热家兔下丘脑cAMP、IL-1β含量的影响

目的:观察解热醒神(JRXS)注射液对内毒素(ET)性发热1h家兔体温、下丘脑cAMP、IL-1_β含量的影响。方法:复制家兔ET性发热模型,用放免法检测下丘脑及脑脊液cAMP、下丘脑IL-1_β的含量。结果:ET组的ΔT[(0.40±0.11)℃]、TRI₁(1.78±0.79)、下丘脑cAMP含量[(2.90±0.40)nmol/g]、脑脊液cAMP含量[(32.10±4.51)nmol/L]、下丘脑IL-1_β含量[(6.08±0.79)ng/g]显著高于生理盐水(NS)组及JRXS+ET组(P＜0.01)。JRXS+ET组ΔT[(0.10±0.10)℃]、TRI₁(0.36±0.64)、下丘脑cAMP含量[(1.37±0.27)nmol/g]、脑脊液cAMP含量[(14.40±3.69)nmol/L)]、下丘脑IL-1_β含量[(2.90±0.37)ng/g]接近NS组,但与ET组比较有非常显著差异(P＜0.01);4组下丘脑及脑脊液cAMP含量、下丘脑IL-1_β含量变化与体温变化呈正相关。结论:JRXS能明显抑制ET引起的发热反应,其抑制效应的机制与降低ET引起的下丘脑cAMP、IL-1_β含量增多有关。

Effect of Jiere Xingshen Injection on cAMP, IL-1β content in hypothalamus of ET febrile rabbits

AIM: The effects of Jiere Xingshen(JRXS) Injection on cAMP, IL-1_β content in hypothalamus (HP) of endotoxin(ET)-induced feverish rabbits were studied. METHODS: The ET-induced fever model was established in rabbits and the cAMP content in hypothalamus (HP) and csf, IL-1_β content in HP were determined by radioimmunoassay following intravenous infusion of JRXS. RESULTS: In ET group, the ΔT[(0.40±0.11)℃], TRI₁(1.78±0.79), cAMP content in HP[(2.90±0.40)nmol/g], cAMP content in csf[(0.40±0.11)nmol/L)], IL-1_β content in HP[(6.08±0.79)ng/g] were higher than that of NS and JRXS+ET group (P＜0.01). In JRXS+ET group, the ΔT[(0.10±0.10)℃], TRI₁(0.36±0.64), cAMP content in HP[(1.37±0.27)nmol/g], cAMP content in csf[(14.4±3.69)nmol/L)], IL-1_β content in HP[(2.90±0.37)ng/g] were very close to that of NS group but lower than that of the ET group (P＜0.01);The cAMP content in HP and csf, IL-1_β content in HP paralleled with the fluctuation of temperature. CONCLUTION: JRXS Injection has significant inhibitory effect on ET-induced fever by inhibiting cAMP and IL-1_β production in hypothalamus.