基于MEBT/MEBO的ERK1/2和p38信号通路与糖尿病足免疫表达关系的研究

The relationship between ERK1/2 and p38 signaling pathway with the immune expression of diabetic based on MEBT/MEBO

目的观察烧伤皮肤再生医疗技术[湿润暴露疗法(MEBT)/湿润烧伤膏(MEBO)]对糖尿病足部创面组织细胞外信号调节激酶(ERK)1/2和p38信号通路分子及免疫表达的调控作用及关系,探讨MEBT/MEBO对糖尿病足溃疡的修复机制。方法糖尿病足患者40例予MEBT/MEBO干预治疗,留取治疗前后创面组织行免疫组化检测ERK1/2和p38信号通路关键分子ERK1/2、p38、促分裂原活化蛋白激酶(MAPKK6)、原癌基因(c-myc)、Akt、活化复制因子2抗体(ATF2)及免疫因子IgA、IgM、IgG、C3c、C4c表达情况,并观察二者间关系。结果经MEBT/MEBO治疗后,39例患者足部创面面积有不同程度缩小,仅1例患者无明显变化,显效14例(35.00%),有效25例(62.50%),无效1例(2.50%)。治疗前后信号通路分子全阳性表达、免疫阳性表达(任一指标)及免疫阳性表达(具体指标)比较差异均有统计学意义(P<0.05),在创面信号通路分子表达阳性率升高的同时,免疫因子阳性表达率亦升高。治疗前创面组织可见免疫因子极少量分布,治疗后创面组织免疫因子IgA、IgM、IgG、C3c、C4c呈广泛、弥漫分布。治疗前创面组织可见信号分子极少量分布,治疗后创面组织信号通路分子ERK1/2、p38、MAPKK6、c-myc、Akt、ATF2呈广泛、弥漫分布。结论 MEBT/MEBO可能促进了糖尿病足创面ERK1/2和p38信号通路分子及免疫表达,ERK1/2和p38信号通路及其交互作用可能通过增加创面组织免疫表达而促进了糖尿病足创面的愈合。

Objective To investigate the regulation on extracellular signal regulated kinase （ERK ）1/2 and p38 signaling pathways and immune expression by moist exposed burn therapy/moist exposed burn ointment（MEBT/MEBO）in diabetic foot and their relationship ,to explore the repair mechanism of MEBT/MEBO on diabetic foot ulcers .Methods Totally 40 diabetic foot pa‐tients were treated by MEBT/MEBO ,to take wound tissue before and after treatment and detect the expression of ERK 1/2 ,p38 , MAPKK6 ,c‐myc ,Akt ,ATF2 ,IgA ,IgM ,IgG ,C3c and C4c by immunohistochemistry ,to investigate their relationship .Results Af‐ter treatment with MEBT/MEBO ,the area of foot wounds in 39 patients was reduced in different degree .Only one patient had no obvious change .14 patients（35 .00% ） were markedly effective ,25 patients（62 .50% ） and 1 patient（2 .50% ） were ineffective .Before andaftertreatment,allpositiveexpression,positiveimmunoreactivity（anyindex）andpositiveexpression（specificindex）ofsignal pathway molecules were statistically significant （P〈0 .05） .While the positive rate of molecular expression in wound pathway in‐creased ,the positive expression rate of immune factor increased .Before treatment ,a small amount of immune factors were found in the wound tissue .After treatment ,the immune factors IgA ,IgM ,IgG ,C3c ,C4c were distributed widely and diffusely .Before treat‐ment ,the wound tissue showed a very small number of signal molecules .After treatment ,the signal pathway molecules MEBT/MEBO and p38 ,MAPKK6 ,c‐myc ,Akt ,ATF2 showed broad and diffuse distribution .Conclusion MEBT/MEBO may promote the expression of ERK1/2 and p38 signaling molecules and immune in diabetic foot ,p38 and ERK1/2 signaling pathway may promote the healing of diabetic foot wound by increasing the expression of immune .