目的探讨不同剂量AngⅡ对裸鼠肝癌细胞皮下移植瘤VEGF、TGF-β1、MMP-9 m RNA表达的影响。方法建立裸鼠肝癌细胞皮下移植瘤模型32只,模型成功后随机分为Ang Ⅱ高、中、低剂量组(75、50、25μg·kg^(-1))以及对照组(生理盐水),每只...目的探讨不同剂量AngⅡ对裸鼠肝癌细胞皮下移植瘤VEGF、TGF-β1、MMP-9 m RNA表达的影响。方法建立裸鼠肝癌细胞皮下移植瘤模型32只,模型成功后随机分为Ang Ⅱ高、中、低剂量组(75、50、25μg·kg^(-1))以及对照组(生理盐水),每只裸鼠腹腔给药0.1 m L,隔日一次,连续给药21天。停药2天后,脱颈处死,检测瘤重和体积,Real-time PCR检测肿瘤组织中VEGF、TGF-β1、MMP-9的m RNA表达。结果 Ang Ⅱ高剂量组和中剂量组的瘤重和体积均显著大于对照组和低剂量组(P<0.01),Ang Ⅱ低剂量组与对照组以及高剂量组与中剂量组之间比较,差异均无统计学意义(P>0.05)。Ang Ⅱ高剂量组和中剂量组VEGF、TGF-β1、MMP-9 m RNA表达水平均高于对照组和低剂量组,差异有统计学意义(P<0.05)。高剂量组VEGF和MMP-9 m RNA表达水平显著高于中剂量组(P<0.05),但两组TGF-β1 m RNA表达水平无显著差异(P>0.05)。结论 AngⅡ可明显促进裸鼠肝癌细胞皮下移植瘤的生长和转移,可能是通过影响VEGF、TGF-β1、MMP-9的表达来发挥作用。展开更多
AIM: To investigate the mRNA expressions of bFGF and MMP-9 in gastric carcinomas so as to reveal their correlations with tumor microvascular density (MVD), invasion, metastasis, and prognosis.METHODS: In situ hybridiz...AIM: To investigate the mRNA expressions of bFGF and MMP-9 in gastric carcinomas so as to reveal their correlations with tumor microvascular density (MVD), invasion, metastasis, and prognosis.METHODS: In situ hybridization and immunohistochemical techniques were used to detect the expressions of bFGFmRNA and MMP-9mRNA and the proteins of CD34 in 105 specimens of gastric carcinomas.RESULTS: In situ hybridization study showed that positive rates of bFGF mRNA and MMP-9mRNA expressions were 60.95% and 59.19%; the mean MVD was 46.09±11.52 and 43.75±13.41, respectively in piece/0.72 mm2 in tumors with bFGFmRNA and MMP-9mRNA positive expressions,which were significantly higher than those with negative expression (29.41±12.47; 33.45±13.92 piece/0.72 mm2,respectively). The positive expression rates of bFGFmRNA and MMP-9mRNA were correlated to the tumor invasion depth (rs = 0.211, P= 0.031; rs = 0.335, P= 0.001), growing pattern (rs= 0.324, P= 0.001; rs= 0.267, P= 0.006), vessel invasion (rs = 0.579, P = 0.001; rs = 0.209, P = 0.032),lymph node metastasis (rs = 0.405, P = 0.001; rs= 0.343,P = 0.001) and distant metastasis (rs= 0.474, P = 0.001;rs = 0.468, P = 0.001), but not correlated to tumortype (rs= 0.134, P= 0.173; rs= 0.103, P= 0.145) anddifferentiations (rs = 0.096, P= 0.332; rs = 0.102, P= 0.298).The mean MVD was much higher in the tumors withinfiltrating growth at stage T3-T4, with vessel invasion, lymph node metastasis and distant metastasis than those with expanding growth type (t = 10.105, P= 0.001) at stage T1-T2 (t = 5.961, P = 0.001), with non-vessel invasion (t= 7.394, P= 0.001), non-lymph node metastasis (t= 3.819, P= 0.01) and non-distant metastasis (t= 10.578, P = 0.001). Positive correlation was observed between MVD and the expressions of bFGFmRNA and MMP-9mRNA(t= 3.207, P= 0.002; t= 7.035, P= 0.001, respectively). The mean survival time and 5-year survival rate werelower in cases with MVD over 39.5 and the positive expressions of bFGFmRNA and MMP-9mRNA than those with MVD less than 39.5 and the negative expressions of bFGFmRNA and MMP-9mRNA.CONCLUSION: bFGF and MMP-9 promote the angiogenesis of the gastric cancers. Detection of the expressions of bF-GF and MMP-9 can serve as a useful index to determine the angiogenesis, invasion, metastasis, and prognosis of gastric cancers.展开更多
文摘目的探讨不同剂量AngⅡ对裸鼠肝癌细胞皮下移植瘤VEGF、TGF-β1、MMP-9 m RNA表达的影响。方法建立裸鼠肝癌细胞皮下移植瘤模型32只,模型成功后随机分为Ang Ⅱ高、中、低剂量组(75、50、25μg·kg^(-1))以及对照组(生理盐水),每只裸鼠腹腔给药0.1 m L,隔日一次,连续给药21天。停药2天后,脱颈处死,检测瘤重和体积,Real-time PCR检测肿瘤组织中VEGF、TGF-β1、MMP-9的m RNA表达。结果 Ang Ⅱ高剂量组和中剂量组的瘤重和体积均显著大于对照组和低剂量组(P<0.01),Ang Ⅱ低剂量组与对照组以及高剂量组与中剂量组之间比较,差异均无统计学意义(P>0.05)。Ang Ⅱ高剂量组和中剂量组VEGF、TGF-β1、MMP-9 m RNA表达水平均高于对照组和低剂量组,差异有统计学意义(P<0.05)。高剂量组VEGF和MMP-9 m RNA表达水平显著高于中剂量组(P<0.05),但两组TGF-β1 m RNA表达水平无显著差异(P>0.05)。结论 AngⅡ可明显促进裸鼠肝癌细胞皮下移植瘤的生长和转移,可能是通过影响VEGF、TGF-β1、MMP-9的表达来发挥作用。
文摘AIM: To investigate the mRNA expressions of bFGF and MMP-9 in gastric carcinomas so as to reveal their correlations with tumor microvascular density (MVD), invasion, metastasis, and prognosis.METHODS: In situ hybridization and immunohistochemical techniques were used to detect the expressions of bFGFmRNA and MMP-9mRNA and the proteins of CD34 in 105 specimens of gastric carcinomas.RESULTS: In situ hybridization study showed that positive rates of bFGF mRNA and MMP-9mRNA expressions were 60.95% and 59.19%; the mean MVD was 46.09±11.52 and 43.75±13.41, respectively in piece/0.72 mm2 in tumors with bFGFmRNA and MMP-9mRNA positive expressions,which were significantly higher than those with negative expression (29.41±12.47; 33.45±13.92 piece/0.72 mm2,respectively). The positive expression rates of bFGFmRNA and MMP-9mRNA were correlated to the tumor invasion depth (rs = 0.211, P= 0.031; rs = 0.335, P= 0.001), growing pattern (rs= 0.324, P= 0.001; rs= 0.267, P= 0.006), vessel invasion (rs = 0.579, P = 0.001; rs = 0.209, P = 0.032),lymph node metastasis (rs = 0.405, P = 0.001; rs= 0.343,P = 0.001) and distant metastasis (rs= 0.474, P = 0.001;rs = 0.468, P = 0.001), but not correlated to tumortype (rs= 0.134, P= 0.173; rs= 0.103, P= 0.145) anddifferentiations (rs = 0.096, P= 0.332; rs = 0.102, P= 0.298).The mean MVD was much higher in the tumors withinfiltrating growth at stage T3-T4, with vessel invasion, lymph node metastasis and distant metastasis than those with expanding growth type (t = 10.105, P= 0.001) at stage T1-T2 (t = 5.961, P = 0.001), with non-vessel invasion (t= 7.394, P= 0.001), non-lymph node metastasis (t= 3.819, P= 0.01) and non-distant metastasis (t= 10.578, P = 0.001). Positive correlation was observed between MVD and the expressions of bFGFmRNA and MMP-9mRNA(t= 3.207, P= 0.002; t= 7.035, P= 0.001, respectively). The mean survival time and 5-year survival rate werelower in cases with MVD over 39.5 and the positive expressions of bFGFmRNA and MMP-9mRNA than those with MVD less than 39.5 and the negative expressions of bFGFmRNA and MMP-9mRNA.CONCLUSION: bFGF and MMP-9 promote the angiogenesis of the gastric cancers. Detection of the expressions of bF-GF and MMP-9 can serve as a useful index to determine the angiogenesis, invasion, metastasis, and prognosis of gastric cancers.
文摘[目的]探讨中药一贯煎对子痫前期大鼠胎盘核转录因子-κB mRNA(NF-κB mRNA)和基质金属蛋白酶-9mRNA(MMP-9 mRNA)表达的影响。[方法]建立子痫前期Wistar大鼠模型,并灌胃给予中药一贯煎,监测给药前后大鼠血压及24 h尿蛋白变化。PCR法检测孕鼠胎盘NF-κB m RNA及MMP-9 m RNA的表达。[结果]1)NF-κB mRNA:与正常妊娠组相比,模型对照组及一贯煎治疗组均升高,与模型对照组相比,一贯煎治疗组降低,且差异均有显著性(P<0.05)。2)MMP-9 m RNA:与正常妊娠组相比,模型对照组与一贯煎治疗组均降低,与模型对照组相比,一贯煎治疗组有所升高,且差异均有显著性(P<0.05)。[结论]一贯煎通过降低子痫前期大鼠胎盘NF-κB mRNA的表达,升高MMP-9mRNA的表达治疗子痫前期大鼠。
