EXPERIMENTAL STUDY ON MOXIBUSTION AT ZUSANLI(ST 36) AND LIANGMEN (ST 21) INDUCING HEAT SHOCK PROTEIN 70 (HSP70) EXPRESSION TO RESIST OXIDATIVE INJURY OF GASTRIC MUCOSA

Objective: To observe effect of moxibustion at Zusanli (足三里 ST 36) and Liangmen (梁门 ST 21) on expression of heat shock protein 70 (HSP70) in gastric mucosa of the rat of stress ulcer (SU) to explore the mechanism of moxibustion in resisting oxidative injury of the gastric mucosa. Methods: Sixty SD rats were evenly randomized into 4 groups, a blank group, a model group, an acupoint moxibustion group and a non-acupoint moxibustion group. Water restraint stress (WRS) method was used to make stress gastric ulcer rat model. The ulcerative index (UI) of gastric mucosa was evaluated by using GUTH method, the gastric mucosa blood flux (GMBF) was detected by a laser Doppler bloodflow monitor, and HSP70 expression and malondialdehyde (MDA) content in the gastric mucosa were determined respectively with immunohistochemical and thiobarbiturate methods. Results: Moxibustion at Zusanli (ST 36) and Liangmen (ST 21) significantly decreased UI, up-regulated HSP70 expression, increased GMBF, and decreased MDA content in the gastric mucosa in the rat of stress gastric ulcer, with significant differences as compared with the model group and the non-acupoint moxibustion group (P<0.05 or P<0.01). Conclusion: Moxibustion at Zusanli (ST 36) and Liangmen (ST 21) can induce high expression of HSP70 and decrease MDA content in the gastric mucosa, so as to resist oxidative injury, with relative acupoint specificity.

刚地弓形虫热休克蛋白21体外条件下对小鼠巨噬细胞功能的影响

[目的]本试验旨在探究刚地弓形虫热休克蛋白21(TgHSP21)在体外对小鼠巨噬细胞系(Ana-1)功能的调节作用。[方法]构建重组表达载体pET-32a/TgHSP 21,获得重组蛋白TgHSP21(rTgHSP21)。用免疫荧光抗体试验(IFA)验证rTgHSP21在体外与Ana-1细胞的结合情况。Ana-1细胞分别用不同质量浓度(5、10、20、40、80μg·mL^-1)的rTgHSP21处理后,采取细胞计数试剂盒(CCK-8)检测细胞增殖情况,应用Transwell细胞小室检测细胞趋化情况,应用流式细胞术检测Ana-1细胞凋亡和吞噬能力。分别用总一氧化氮(NO)试剂盒和细胞因子ELISA试剂盒检测Ana-1细胞的NO和肿瘤坏死因子α(TNF-α)、白介素12(IL-12)、IL-6、IL-1β的分泌量。[结果]成功获得纯化的rTgHSP21,其具有与Ana-1细胞结合的能力。5和10μg·mL^-1的rTgHSP21均显著促进Ana-1细胞的增殖,各个浓度的rTgHSP21均显著促进细胞凋亡和吞噬能力。80μg·mL^-1 rTgHSP21明显促进Ana-1细胞分泌NO。在不同浓度rTgHSP21作用下,细胞因子IL-6和TNF-α的表达量均明显上升,而其质量浓度为10、20、40和80μg·mL^-1时IL-12的分泌被抑制。此外,rTgHSP21显著抑制了Ana-1细胞的迁移能力。[结论]TgHSP21能够与Ana-1细胞结合并在体外条件下调节Ana-1细胞的增殖、吞噬、凋亡、迁移及分泌。