目的观察艾灸对结肠炎相关性结肠癌(CAC)大鼠的干预作用,从嘌呤受体P2X7R与Wnt/b-catenin信号通路探讨可能的效应机制。方法将SD大鼠随机分为正常组、CAC组、隔药灸组、隔姜灸组。CAC组、隔药灸组、隔姜灸组均采用腹腔注射AOM联合DSS法...目的观察艾灸对结肠炎相关性结肠癌(CAC)大鼠的干预作用,从嘌呤受体P2X7R与Wnt/b-catenin信号通路探讨可能的效应机制。方法将SD大鼠随机分为正常组、CAC组、隔药灸组、隔姜灸组。CAC组、隔药灸组、隔姜灸组均采用腹腔注射AOM联合DSS法制备CAC大鼠模型,隔药灸与隔姜灸组均取天枢(双)、气海穴进行治疗。记录各组大鼠体质量、疾病活动指数(DAI)和成瘤率;通过HE染色观察艾灸对CAC大鼠结肠损伤的干预效应;通过RT-q PCR和Western Blot技术,检测艾灸对CAC大鼠结肠组织C-myc、Wnt1、b-catenin、GSK-3bm RNA和P2X7R蛋白表达的调节作用。结果与正常组相比,CAC组大鼠体质量显著降低、DAI增高、成瘤率明显增加(P<0.05),结肠组织可见腺管共壁背靠背和筛样结构,高级别腺癌形成。CAC组大鼠结肠组织P2X7R蛋白表达显著下调(P<0.05),C-myc、b-catenin、GSK-3b、Wnt1 m RNA的表达均显著上调(P<0.05)。与CAC组相比,隔药灸组和隔姜灸组大鼠体质量增加,DAI降低(P<0.05),结肠组织P2X7R蛋白表达显著上调,C-myc m RNA下调(P<0.05);隔姜灸组成瘤率明显降低(P<0.05),且Wnt1、b-catenin、GSK-3bm RNA表达显著下调(P<0.05)。结论隔药灸、隔姜灸均能调节CAC大鼠结肠组织P2X7R及C-myc的异常表达,且隔姜灸还能下调CAC大鼠结肠组织Wnt1、b-catenin、GSK-3bm RNA的表达。展开更多
Objective:To observe the effects of herb-partitioned moxibustion and ginger-partitioned moxibustion on the growth of colon tumors in rats with colitis-associated colon cancer(CACC),and explore the mechanism of moxibus...Objective:To observe the effects of herb-partitioned moxibustion and ginger-partitioned moxibustion on the growth of colon tumors in rats with colitis-associated colon cancer(CACC),and explore the mechanism of moxibustion intervening CACC through the purinergic receptor P2X ligand-gated ion channel 7(P2X7R)/signal transducer and activator of transcription 3(STAT3)/vascular endothelial growth factor(VEGF)pathway.Methods:A total of 26 male Sprague-Dawley rats were selected.According to the random number table method,6 rats were selected as the normal group.The remaining 20 rats were injected intraperitoneally with azoxymethane(AOM)combined with oral dextran sodium sulfate(DSS)to prepare the CACC model.After the model was successfully established,2 rats were randomly selected for model identification.The remaining 18 rats which were successfully modeled were randomly divided into a model group,a herb-partitioned moxibustion group and a ginger-partitioned moxibustion group,with 6 rats in each group.Moxibustion intervention was performed in the herb-partitioned moxibustion group and the ginger-partitioned moxibustion group at Qihai(CV 6)and bilateral Tianshu(ST 25).Moxibustion was performed twice at each point each time,once a day,at a 1-day interval after 6 consecutive interventions,for a total of 30 interventions.After intervention,the colon tumor load,pathological change and histopathological score were observed.Immunohistochemistry was used to detect the expressions of VEGF,P2X7R,phospho-STAT3(p-STAT3),and nuclear factor-kappa B p65(NF-κB p65)proteins in rat colon tissue.Western blot was used to detect the levels of p-STAT3 and NF-κB p65 proteins in rat colon tissue.Results:Compared with the normal group,the colon tumor load and histopathological score in the model group were significantly increased(both P<0.001),and different grades of dysplasia were observed in colon tissue from the model group,reaching the degree of adenocarcinoma;the expression level of P2X7R protein in colon tissue was significantly decreased(P<0.001),and the expression levels of p-STAT3,NF-κB p65 and VEGF proteins were significantly increased(all P<0.001)in the model group.Compared with the model group,the colon tumor load,colon histopathological score and the levels of p-STAT3,NF-κB p65 and VEGF proteins in colon tissue were significantly decreased(all P<0.05)in the herb-partitioned moxibustion group and the ginger-partitioned moxibustion group while the expression levels of P2X7R protein in colon tissue were significantly increased(both P<0.05).Conclusion:Both herb-partitioned moxibustion and ginger-partitioned moxibustion can reduce the colon tumor load in CACC rats and delay the progression of colon adenomas.The mechanism may be mediated by the P2X7R/STAT3 pathway to inhibit STAT3 phosphorylation,thereby reducing VEGF protein expression.展开更多
文摘目的观察艾灸对结肠炎相关性结肠癌(CAC)大鼠的干预作用,从嘌呤受体P2X7R与Wnt/b-catenin信号通路探讨可能的效应机制。方法将SD大鼠随机分为正常组、CAC组、隔药灸组、隔姜灸组。CAC组、隔药灸组、隔姜灸组均采用腹腔注射AOM联合DSS法制备CAC大鼠模型,隔药灸与隔姜灸组均取天枢(双)、气海穴进行治疗。记录各组大鼠体质量、疾病活动指数(DAI)和成瘤率;通过HE染色观察艾灸对CAC大鼠结肠损伤的干预效应;通过RT-q PCR和Western Blot技术,检测艾灸对CAC大鼠结肠组织C-myc、Wnt1、b-catenin、GSK-3bm RNA和P2X7R蛋白表达的调节作用。结果与正常组相比,CAC组大鼠体质量显著降低、DAI增高、成瘤率明显增加(P<0.05),结肠组织可见腺管共壁背靠背和筛样结构,高级别腺癌形成。CAC组大鼠结肠组织P2X7R蛋白表达显著下调(P<0.05),C-myc、b-catenin、GSK-3b、Wnt1 m RNA的表达均显著上调(P<0.05)。与CAC组相比,隔药灸组和隔姜灸组大鼠体质量增加,DAI降低(P<0.05),结肠组织P2X7R蛋白表达显著上调,C-myc m RNA下调(P<0.05);隔姜灸组成瘤率明显降低(P<0.05),且Wnt1、b-catenin、GSK-3bm RNA表达显著下调(P<0.05)。结论隔药灸、隔姜灸均能调节CAC大鼠结肠组织P2X7R及C-myc的异常表达,且隔姜灸还能下调CAC大鼠结肠组织Wnt1、b-catenin、GSK-3bm RNA的表达。
文摘Objective:To observe the effects of herb-partitioned moxibustion and ginger-partitioned moxibustion on the growth of colon tumors in rats with colitis-associated colon cancer(CACC),and explore the mechanism of moxibustion intervening CACC through the purinergic receptor P2X ligand-gated ion channel 7(P2X7R)/signal transducer and activator of transcription 3(STAT3)/vascular endothelial growth factor(VEGF)pathway.Methods:A total of 26 male Sprague-Dawley rats were selected.According to the random number table method,6 rats were selected as the normal group.The remaining 20 rats were injected intraperitoneally with azoxymethane(AOM)combined with oral dextran sodium sulfate(DSS)to prepare the CACC model.After the model was successfully established,2 rats were randomly selected for model identification.The remaining 18 rats which were successfully modeled were randomly divided into a model group,a herb-partitioned moxibustion group and a ginger-partitioned moxibustion group,with 6 rats in each group.Moxibustion intervention was performed in the herb-partitioned moxibustion group and the ginger-partitioned moxibustion group at Qihai(CV 6)and bilateral Tianshu(ST 25).Moxibustion was performed twice at each point each time,once a day,at a 1-day interval after 6 consecutive interventions,for a total of 30 interventions.After intervention,the colon tumor load,pathological change and histopathological score were observed.Immunohistochemistry was used to detect the expressions of VEGF,P2X7R,phospho-STAT3(p-STAT3),and nuclear factor-kappa B p65(NF-κB p65)proteins in rat colon tissue.Western blot was used to detect the levels of p-STAT3 and NF-κB p65 proteins in rat colon tissue.Results:Compared with the normal group,the colon tumor load and histopathological score in the model group were significantly increased(both P<0.001),and different grades of dysplasia were observed in colon tissue from the model group,reaching the degree of adenocarcinoma;the expression level of P2X7R protein in colon tissue was significantly decreased(P<0.001),and the expression levels of p-STAT3,NF-κB p65 and VEGF proteins were significantly increased(all P<0.001)in the model group.Compared with the model group,the colon tumor load,colon histopathological score and the levels of p-STAT3,NF-κB p65 and VEGF proteins in colon tissue were significantly decreased(all P<0.05)in the herb-partitioned moxibustion group and the ginger-partitioned moxibustion group while the expression levels of P2X7R protein in colon tissue were significantly increased(both P<0.05).Conclusion:Both herb-partitioned moxibustion and ginger-partitioned moxibustion can reduce the colon tumor load in CACC rats and delay the progression of colon adenomas.The mechanism may be mediated by the P2X7R/STAT3 pathway to inhibit STAT3 phosphorylation,thereby reducing VEGF protein expression.