黄柏碱调节MCP-1/CCR2信号通路对特应性皮炎大鼠炎症反应的影响OACSTPCD
Effect of Phellodendrine on Inflammatory Response in Rats with Atopic Dermatitis by Regulating MCP-1/CCR2 Signaling Pathway
目的:探讨黄柏碱对特应性皮炎(Atopic dermatitis,AD)大鼠炎症反应的影响及其作用机制.方法:构建AD大鼠模型,大鼠分为正常组、模型组、黄柏碱低剂量组、黄柏碱高剂量组、黄柏碱+巨噬细胞趋化蛋白-1(Monocyte chemotactic protein-1,MCP-1)组;给药结束后,各组大鼠做皮损评分,记录搔抓次数,HE染色观察皮肤组织病理变化,甲苯胺蓝染色测定肥大细胞数,ELISA试剂盒测定皮肤组织活性氧(Reactiveoxygenspecies,ROS)和血清免疫球蛋白(Immunoglobulins,IgE)、白介素-17(Interleukin,IL-17)、IL-6的含量,Western blot检测皮肤组织MCP-1、CC类趋化因子受体2(CC chemokinereceptor 2,CCR2)蛋白表达.结果:与正常组相比,模型组大鼠脱毛处皮肤发生溃疡、红斑,表皮和棘层增厚且有大量炎性细胞浸润,搔抓次数、肥大细胞数、ROS、IgE、IL-17、IL-6及MCP-1、CCR2蛋白表达水平增加(P<0.05);与模型组相比,黄柏碱低、高剂量组皮肤组织红斑、溃疡情况、炎性细胞浸润减少,未见脱屑,搔抓次数、肥大细胞数、ROS、IgE、IL-17、IL-6及MCP-1、CCR2蛋白表达水平依次降低(P<0.05);与黄柏碱高剂量组相比,黄柏碱+MCP-1组皮肤红斑、溃疡和炎性细胞浸润加重,搔抓次数、肥大细胞数、ROS、IgE、IL-17、IL-6及MCP-1、CCR2蛋白表达水平增加(P<0.05).结论:黄柏碱可能通过抑制MCP-1/CCR2信号通路降低AD大鼠炎症反应.
Objective To investigate the effect of Phellodendrine on inflammatory response in rats with atopic dermatitis(AD)and its mechanism.Methods AD rat model was established.The rats were separated into normal group,model group,low-dose Phellodendrine group,high-dose Phellodendrine group,Phellodendrine+macrophage chemoattractant protein-1(MCP-1)group.After the end of administration,the rats in each group were scored for skin lesions,and the number of scratches was recorded,HE staining was applied to observe pathological changes in skin tissue,Toluidine blue staining was applied to determine the number of Mast cells,ELISA kits were applied to measure the content of reactive oxygen species(ROS)in skin tissue and serum immunoglobulin(IgE),interleukin-17(IL-17)and IL-6,and Western blot was applied to detect the expression of MCP-1 and CC Chemokine receptor 2(CCR2)proteins in skin tissue.Results Compared with the normal group,the depilated skin of the model group developed ulcers,erythema,thickening of the epidermis and spinous layer,and a large number of inflammatory cell infiltration,the scratching times,the number of Mast cells,ROS,IgE,IL-17,IL-6,the protein expression levels of MCP-1 and CCR2 were increased(P<0.05).Compared with the model group,the erythema,ulcer and inflammatory cell infiltration of skin tissue in the low and high dose Phellodendrine groups were reduced,and no desquamation was found,the scratching times,the number of Mast cells,ROS,IgE,IL-17,IL-6,the protein expression levels of MCP-1 and CCR2 were decreased in turn(P<0.05).Compared with the high dose Phellodendrine group,the skin erythema,ulcer and inflammatory cell infiltration in the Phellodendrine+MCP-1 group were aggravated,the scratching times,the number of Mast cells,ROS,IgE,IL-17,IL-6,the protein expression levels of MCP-1 and CCR2 were increased(P<0.05).Conclusion Phellodendrine may reduce the inflammatory response in AD rats by inhibiting MCP-1/CCR2 signaling pathway.
于现朝;寇旺;杨洋
解放军总医院京北医疗区北苑门诊部 北京 100012解放军总医院第六医学中心药剂科 北京 100037解放军总医院第六医学中心皮肤科 北京 100037
中医学
特应性皮炎炎症反应黄柏碱MCP-1/CCR2信号通路巨噬细胞趋化蛋白-1
atopic dermatitisinflammatory responsephellodendrineMCP-1/CCR2 signaling pathwaymacrophage chemoattractant protein-1
《中国美容医学》 2024 (010)
13-17 / 5
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