乌蔹莓抗炎镇痛有效部位的筛选

目的探讨乌蔹莓抗炎镇痛作用的有效部位。方法采用二甲苯致小鼠耳廓肿胀、蛋清致大鼠足跖肿胀2种急性炎症模型以及大鼠棉球肉芽肿慢性炎症模型,研究乌蔹莓不同提取部位ig给药对急慢性炎症的作用。采用热板法和醋酸扭体法致痛,研究乌蔹莓不同提取部位ig给药的镇痛作用。结果与模型组相比,乌蔹莓水部位和乌蔹莓水提液高、低剂量组明显抑制二甲苯所致小鼠耳廓肿胀(P0.05、0.01),明显抑制蛋清所致大鼠足跖肿胀(P0.05、0.01),显著抑制大鼠棉球肉芽肿(P0.01)。乌蔹莓石油醚部位和乌蔹莓水提液高、低剂量组给药后明显延长热板所致小鼠的痛阈值,与模型组和自身给药前比较差异显著(P0.05、0.01);乌蔹莓石油醚部位和乌蔹莓水提液高、低剂量组明显减少醋酸所致小鼠扭体反应次数,与模型组比较差异极显著(P0.01)。结论乌蔹莓抗炎作用部位主要为水部位,而镇痛作用部位主要为石油醚部位。

Screening of anti-inflammatory and analgesic effective fractions from Cayratia japonica

Objective To investigate the anti-inflammatory and analgesic effective fractions from Cayratia japonica. Methods The acute inflammatory models, such as xylene-induced ear edema, egg white-induced paw edema, and the chronic inflammatory model granuloma induced by cotton pellet implantation, were used in researching the inflammatory effects of the different fractions from C. japonica by ig administration. Meanwhile, the analgesic effects of the different fractions from C. japonica were observed by hot plate and acetic acid writhing test. Results Compared with the model group, high- and low-dose water fraction and water extract could significantly inhibit ear edema in mice (P<0.05, 0.01) and paw edema in rats (P<0.05, 0.01). Also, water fraction and water extract decreased the granuloma of rats (P<0.01). Moreover, after the treatment with high- and low-dose petroleum ether fraction and water extract, the pain threshold with hot plate method was significantly prolonged (P<0.05, 0.01) compared with the model group and the data before the drugs administration. The writhing number was reduced after administration (P<0.01) compared to the model group. Conclusion The anti-inflammatory effect of C. japonica mainly locates in the water fraction, and the analgesic effect is mainly the petroleum ether fraction.