目的观察补阳还五汤对Cav-1^-/-小鼠脑缺血模型PI3K、Akt、PTEN表达的影响,探讨其可能的作用机制。方法将野生型小鼠(WT)及Cav-1^-/-小鼠(KO)随机分为假手术组、模型组与补阳组。采用大脑中动脉栓塞法制备脑缺血模型,干预10 d后运用Ayel...目的观察补阳还五汤对Cav-1^-/-小鼠脑缺血模型PI3K、Akt、PTEN表达的影响,探讨其可能的作用机制。方法将野生型小鼠(WT)及Cav-1^-/-小鼠(KO)随机分为假手术组、模型组与补阳组。采用大脑中动脉栓塞法制备脑缺血模型,干预10 d后运用Ayelet Levy 14分评分法观察小鼠神经功能评分。免疫组化和qRT-PCR分别检测小鼠脑组织PI3K、Akt、PTEN蛋白和mRNA的表达。结果与假手术组比较,各模型组小鼠均出现明显神经功能障碍(P<0.01),且PI3K、Akt蛋白和mRNA表达明显升高(P<0.01),PTEN蛋白和mRNA表达明显降低(P<0.01),WT模型组小鼠脑组织PI3K、Akt、PTEN蛋白和mRNA表达更显著,且神经功能评分优于KO模型组(P<0.01,P<0.05);WT补阳组小鼠脑组织PI3K、Akt、PTEN蛋白和mRNA的调控程度及神经功能恢复程度均优于WT模型组和KO补阳组(P<0.01)。结论补阳还五汤可能通过Cav-1调控PI3K/Akt信号通路活性,发挥抗脑缺血损伤的作用。展开更多
AIM: To investigate the clinicopathological significance and prognostic value of caveolin-1(CAV-1) in both tumor and stromal cells in colorectal cancer(CRC).METHODS: A total of 178 patients with CRC were included in t...AIM: To investigate the clinicopathological significance and prognostic value of caveolin-1(CAV-1) in both tumor and stromal cells in colorectal cancer(CRC).METHODS: A total of 178 patients with CRC were included in this study. The correlation between CAV-1expression and clinicopathologic features and survival was studied.RESULTS: CAV-1 expression was detected in tumor and stromal cells. The expression of stromal CAV-1 was closely associated with histological type(P = 0.022), pathologic tumor-node-metastasis stage(P = 0.047), pathologic N stage(P = 0.035) and recurrence(P = 0.000). However, tumor cell CAV-1 did not show any correlation with clinical parameters. Additionally, the loss of stromal CAV-1 expression was associated with shorter disease-free survival(P = 0.000) and overall survival(P = 0.000). Multivariate analysis revealed that the loss of stromal CAV-1 expression was an independent prognostic factor for both overall survival(P = 0.014) and disease-free survival(P = 0.006).CONCLUSION: The loss of stromal CAV-1 expression in CRC was associated with poor prognosis and could be a prognostic factor for CRC patients.展开更多
文摘目的观察补阳还五汤对Cav-1^-/-小鼠脑缺血模型PI3K、Akt、PTEN表达的影响,探讨其可能的作用机制。方法将野生型小鼠(WT)及Cav-1^-/-小鼠(KO)随机分为假手术组、模型组与补阳组。采用大脑中动脉栓塞法制备脑缺血模型,干预10 d后运用Ayelet Levy 14分评分法观察小鼠神经功能评分。免疫组化和qRT-PCR分别检测小鼠脑组织PI3K、Akt、PTEN蛋白和mRNA的表达。结果与假手术组比较,各模型组小鼠均出现明显神经功能障碍(P<0.01),且PI3K、Akt蛋白和mRNA表达明显升高(P<0.01),PTEN蛋白和mRNA表达明显降低(P<0.01),WT模型组小鼠脑组织PI3K、Akt、PTEN蛋白和mRNA表达更显著,且神经功能评分优于KO模型组(P<0.01,P<0.05);WT补阳组小鼠脑组织PI3K、Akt、PTEN蛋白和mRNA的调控程度及神经功能恢复程度均优于WT模型组和KO补阳组(P<0.01)。结论补阳还五汤可能通过Cav-1调控PI3K/Akt信号通路活性,发挥抗脑缺血损伤的作用。
基金Supported by National Natural Science Foundation of China,No.81072049
文摘AIM: To investigate the clinicopathological significance and prognostic value of caveolin-1(CAV-1) in both tumor and stromal cells in colorectal cancer(CRC).METHODS: A total of 178 patients with CRC were included in this study. The correlation between CAV-1expression and clinicopathologic features and survival was studied.RESULTS: CAV-1 expression was detected in tumor and stromal cells. The expression of stromal CAV-1 was closely associated with histological type(P = 0.022), pathologic tumor-node-metastasis stage(P = 0.047), pathologic N stage(P = 0.035) and recurrence(P = 0.000). However, tumor cell CAV-1 did not show any correlation with clinical parameters. Additionally, the loss of stromal CAV-1 expression was associated with shorter disease-free survival(P = 0.000) and overall survival(P = 0.000). Multivariate analysis revealed that the loss of stromal CAV-1 expression was an independent prognostic factor for both overall survival(P = 0.014) and disease-free survival(P = 0.006).CONCLUSION: The loss of stromal CAV-1 expression in CRC was associated with poor prognosis and could be a prognostic factor for CRC patients.
