AIM： To determine the expressions of inducible nitric oxide synthase （iNOS） and matrix metalloproteinase-9 （MMP-9） in hepatocellular carcinoma （HCC） and to investigate the relationship between iNOS and MMP-9 ex...AIM： To determine the expressions of inducible nitric oxide synthase （iNOS） and matrix metalloproteinase-9 （MMP-9） in hepatocellular carcinoma （HCC） and to investigate the relationship between iNOS and MMP-9 expression and their effects on angiogenesis and progression of HCC.METHODS： In this study, we examined iNOS, MMP-9, and CD34 expression in specimens surgically removed from 32 HCC patients and 7 normal liver tissues by immunohistochemical staining. Meanwhile, microvessel density （MVD） was determined as a marker of angiogenesis by counting CD34-positive cells. RESULTS： The positive rates of iNOS and MMP-9 expression were 71.88% （23/32） and 78.13% （25/32） in HCC. MMP-9 expression was significantly correlated with tumor size, capsule status, TNM stage, and risk of HCC recurrence （P = 0.032, P= 0.033, P= 0.007, and P= 0.001, respectively）. There was also a significant relationship between iNOS expression and capsule status and risk of HCC recurrence （P = 0.049 and P = 0.004, respectively）, but no correlation between iNOS expression and tumor size and TNM stage. There was a positive association between MVD and TNM stage and risk of HCC recurrence （P = 0.037 and P = 0.000, respectively）. The count of MVD was significantly different in different iNOS and MMP-9 immunoreactivity groups （F= 17.713 and 17.097, P= 0.000 and P = 0.000, respectively）. The examination of Spearman＇s rank correlation coefficient showed that there was a significant positive correlation between MVD and iNOS, MMP-9 immunoreactivity （r = 0.754 and 0.751, P= 0.000 and P=-0.000, respectively）. There was also a significant association between MMP-9 and iNOS expression in HCC （P = 0.010）. CONCLUSION： Nitric oxide （NO） produced by iNOS could modulate MMP-9 production and therefore contribute totumor cell angiogenesis and invasion and metastasis in HCC. The strong expression of iNOS and MMP-9 in HCC may be helpful in evaluating the recurrence of HCC, predicting poor prognosis. For patients 展开更多
目的比较温阳法、滋阴法、活血法及复合法对肾阳虚型心力衰竭大鼠心室重构(ventricular re-modeling,VR)及心功能的影响。方法采用切除双侧甲状腺组织后持续静脉滴注阿霉素的方法制备心肾阳虚型心力衰竭大鼠模型。随机分为模型组生理盐...目的比较温阳法、滋阴法、活血法及复合法对肾阳虚型心力衰竭大鼠心室重构(ventricular re-modeling,VR)及心功能的影响。方法采用切除双侧甲状腺组织后持续静脉滴注阿霉素的方法制备心肾阳虚型心力衰竭大鼠模型。随机分为模型组生理盐水6mL/(kg·d)灌胃、温阳组温阳健心灵浸膏6mL/(kg·d)灌胃、活血组川芎丹参浸膏6mL/(kg·d)灌胃、滋阴组麦冬知母浸膏6mL/(kg·d)灌胃及复合组阴阳双补健心浸膏6mL/(kg·d)灌胃,每组10只。另选取10只大鼠作为正常对照组(正常组),自由饮食饮水。各组连续干预4周。观察大鼠左心室收缩压(left ventricular systolic pressure,LVSP)、左心室舒张末压(left ventricular end diastolic pressure,LVEDP)、左心室内压最大上升和下降速率maximal rate of left ventricular pressure of development(+dp/dtmax) and maximal rate of left ventricular pressure of decline(-dp/dtmax),测量动脉收缩压(systolic blood pressure,SBP)及舒张压(diastolic blood pressure,DBP),计算平均动脉压(mean arterial pressure,MAP),记录心率(heart rate,HR)。称取心脏质量(heart mass,HM)、左心室(包含室间隔)质量(left ventricular mass,LVM)及右心室质量(right ventricular mass,RVM),计算心脏质量指数(heart mass index,HMI)和左心室质量指数(left ventricular mass index,LVMI)。采用RT-PCR法测定大鼠心肌基质金属蛋白酶9(Matrix metalloproteinase-9,MMP-9)、组织金属蛋白酶抑制剂-1(tissue inhibitors of matrixmetalloproteinase-1,TIMP-1)mRNA表达。采用双抗体夹心ELISA法测定血清MMP-9、TIMP-1、N末端脑钠肽(N-terminal pro-brain natriuretic peptide,NT-proBNP)的含量。结果与正常组比较,模型组HR、LVEDP、HM、LVM、HMI、RVM、LVMI、NT-proBNP、MMP-9含量及MMP-9mRNA升高,SBP、DBP、MAP、LVSP、±dp/dtmax、TIMP-1含量及TIMP-1mRNA降低,差异均有统计学意义(P<0.05)。与模型组比较,温阳组SBP、DBP及±dp/dtmax升高,LVEDP、NT-proBNP、MMP-9降低;活血组HR、LV展开更多
目的:探讨甲状腺癌患者血清中高迁移率族蛋白1(high mobility group box-1protein,HMGB1)及金属基质蛋白酶-9(matrix metalloproteinase-9,MMP-9)表达的临床意义,以期为甲状腺癌血清学诊断提供参考依据。方法:收集我院2013-01～2016-12...目的:探讨甲状腺癌患者血清中高迁移率族蛋白1(high mobility group box-1protein,HMGB1)及金属基质蛋白酶-9(matrix metalloproteinase-9,MMP-9)表达的临床意义,以期为甲状腺癌血清学诊断提供参考依据。方法:收集我院2013-01～2016-12收治的甲状腺肿瘤患者68例,其中甲状腺癌38例(甲状腺癌组),甲状腺腺瘤30例(甲状腺腺瘤组),另选择同期健康体检者30例为对照组,通过酶联免疫吸附法检测各组血清中HMGB1及MMP-9的表达水平,并进行相关统计学分析。结果:甲状腺癌组HMGB1及MMP-9的水平高于甲状腺腺瘤组和对照组,差异有统计学意义(P<0.05);甲状腺腺瘤组和对照组血清中HMGB1及MMP-9表达水平无显著性差异(P>0.05);HMGB1与MMP-9表达呈正相关(r=0.669,P<0.05)。结论:HMGB1及MMP-9在甲状腺癌患者血清中呈高表达,检测外周血中HMGB1及MMP-9水平,可以帮助诊断甲状腺癌,对术前判断甲状腺结节的良恶性具有一定的参考价值。展开更多
文摘AIM： To determine the expressions of inducible nitric oxide synthase （iNOS） and matrix metalloproteinase-9 （MMP-9） in hepatocellular carcinoma （HCC） and to investigate the relationship between iNOS and MMP-9 expression and their effects on angiogenesis and progression of HCC.METHODS： In this study, we examined iNOS, MMP-9, and CD34 expression in specimens surgically removed from 32 HCC patients and 7 normal liver tissues by immunohistochemical staining. Meanwhile, microvessel density （MVD） was determined as a marker of angiogenesis by counting CD34-positive cells. RESULTS： The positive rates of iNOS and MMP-9 expression were 71.88% （23/32） and 78.13% （25/32） in HCC. MMP-9 expression was significantly correlated with tumor size, capsule status, TNM stage, and risk of HCC recurrence （P = 0.032, P= 0.033, P= 0.007, and P= 0.001, respectively）. There was also a significant relationship between iNOS expression and capsule status and risk of HCC recurrence （P = 0.049 and P = 0.004, respectively）, but no correlation between iNOS expression and tumor size and TNM stage. There was a positive association between MVD and TNM stage and risk of HCC recurrence （P = 0.037 and P = 0.000, respectively）. The count of MVD was significantly different in different iNOS and MMP-9 immunoreactivity groups （F= 17.713 and 17.097, P= 0.000 and P = 0.000, respectively）. The examination of Spearman＇s rank correlation coefficient showed that there was a significant positive correlation between MVD and iNOS, MMP-9 immunoreactivity （r = 0.754 and 0.751, P= 0.000 and P=-0.000, respectively）. There was also a significant association between MMP-9 and iNOS expression in HCC （P = 0.010）. CONCLUSION： Nitric oxide （NO） produced by iNOS could modulate MMP-9 production and therefore contribute totumor cell angiogenesis and invasion and metastasis in HCC. The strong expression of iNOS and MMP-9 in HCC may be helpful in evaluating the recurrence of HCC, predicting poor prognosis. For patients
文摘目的比较温阳法、滋阴法、活血法及复合法对肾阳虚型心力衰竭大鼠心室重构(ventricular re-modeling,VR)及心功能的影响。方法采用切除双侧甲状腺组织后持续静脉滴注阿霉素的方法制备心肾阳虚型心力衰竭大鼠模型。随机分为模型组生理盐水6mL/(kg·d)灌胃、温阳组温阳健心灵浸膏6mL/(kg·d)灌胃、活血组川芎丹参浸膏6mL/(kg·d)灌胃、滋阴组麦冬知母浸膏6mL/(kg·d)灌胃及复合组阴阳双补健心浸膏6mL/(kg·d)灌胃,每组10只。另选取10只大鼠作为正常对照组(正常组),自由饮食饮水。各组连续干预4周。观察大鼠左心室收缩压(left ventricular systolic pressure,LVSP)、左心室舒张末压(left ventricular end diastolic pressure,LVEDP)、左心室内压最大上升和下降速率maximal rate of left ventricular pressure of development(+dp/dtmax) and maximal rate of left ventricular pressure of decline(-dp/dtmax),测量动脉收缩压(systolic blood pressure,SBP)及舒张压(diastolic blood pressure,DBP),计算平均动脉压(mean arterial pressure,MAP),记录心率(heart rate,HR)。称取心脏质量(heart mass,HM)、左心室(包含室间隔)质量(left ventricular mass,LVM)及右心室质量(right ventricular mass,RVM),计算心脏质量指数(heart mass index,HMI)和左心室质量指数(left ventricular mass index,LVMI)。采用RT-PCR法测定大鼠心肌基质金属蛋白酶9(Matrix metalloproteinase-9,MMP-9)、组织金属蛋白酶抑制剂-1(tissue inhibitors of matrixmetalloproteinase-1,TIMP-1)mRNA表达。采用双抗体夹心ELISA法测定血清MMP-9、TIMP-1、N末端脑钠肽(N-terminal pro-brain natriuretic peptide,NT-proBNP)的含量。结果与正常组比较,模型组HR、LVEDP、HM、LVM、HMI、RVM、LVMI、NT-proBNP、MMP-9含量及MMP-9mRNA升高,SBP、DBP、MAP、LVSP、±dp/dtmax、TIMP-1含量及TIMP-1mRNA降低,差异均有统计学意义(P<0.05)。与模型组比较,温阳组SBP、DBP及±dp/dtmax升高,LVEDP、NT-proBNP、MMP-9降低;活血组HR、LV
文摘目的:探讨甲状腺癌患者血清中高迁移率族蛋白1(high mobility group box-1protein,HMGB1)及金属基质蛋白酶-9(matrix metalloproteinase-9,MMP-9)表达的临床意义,以期为甲状腺癌血清学诊断提供参考依据。方法:收集我院2013-01～2016-12收治的甲状腺肿瘤患者68例,其中甲状腺癌38例(甲状腺癌组),甲状腺腺瘤30例(甲状腺腺瘤组),另选择同期健康体检者30例为对照组,通过酶联免疫吸附法检测各组血清中HMGB1及MMP-9的表达水平,并进行相关统计学分析。结果:甲状腺癌组HMGB1及MMP-9的水平高于甲状腺腺瘤组和对照组,差异有统计学意义(P<0.05);甲状腺腺瘤组和对照组血清中HMGB1及MMP-9表达水平无显著性差异(P>0.05);HMGB1与MMP-9表达呈正相关(r=0.669,P<0.05)。结论:HMGB1及MMP-9在甲状腺癌患者血清中呈高表达,检测外周血中HMGB1及MMP-9水平,可以帮助诊断甲状腺癌,对术前判断甲状腺结节的良恶性具有一定的参考价值。
