肺癌是当今世界上最受关注的癌症之一,其发病率逐年上升,死亡率极高。本论文将要对非小细胞癌中的肺腺癌进行研究,该类型是肺癌中发病率最高的种类,其癌细胞的浸润性强,因此常会破坏胸膜的正常组织及功能,引起胸腔积液。我所研究的CALCR...肺癌是当今世界上最受关注的癌症之一,其发病率逐年上升,死亡率极高。本论文将要对非小细胞癌中的肺腺癌进行研究,该类型是肺癌中发病率最高的种类,其癌细胞的浸润性强,因此常会破坏胸膜的正常组织及功能,引起胸腔积液。我所研究的CALCRL基因是一种蛋白质编码基因,属于细胞表面受体中最大的家族G-蛋白偶联受体的成员,它通过多种相关的信号通路参与调节重要的生命活动,如参与细胞增殖、细胞凋亡等。肿瘤组织是由于细胞恶性增殖与凋亡程序发生异常所造成的,而该基因表达产物具有调节细胞增殖与凋亡的功能,因此本论文将把该基因所参与的调节细胞增殖与凋亡的细胞通路作为重点展开研究。本研究主要使用TCGA、human protein atlas、Kmplotter数据库初步探讨CALCRL的在肺腺癌中的表达及其与患者生存预后的关系,研究其在肺组织中高度表达对于患者生存率的影响,该基因将有可能成为肺腺癌的靶向治疗目标或早期的诊断依据。展开更多
Objective To examine the effects of exogenously administered intermedin （IMD,adrenomedullin-2） on arterial blood pressure,cardiac function and the cardiovascular IMD receptor system in spontaneously hypertensive ra...Objective To examine the effects of exogenously administered intermedin （IMD,adrenomedullin-2） on arterial blood pressure,cardiac function and the cardiovascular IMD receptor system in spontaneously hypertensive rats （SHRs） as well as to investigate the associated mechanisms.Methods Thirteen week-old male rats were divided in Wistar Kyoto （WKY） group （n =12）,SHR group （n =12）,IMD group （SHRs infused with IMD 1-47 500 ng/kg per hour,n =12）,and ADM group （SHRs infused with adrenomedullin 500 ng/kg per hour,n =12）.Results A two-week continuous administration of low dose IMD 1-47 via mini-osmotic pumps markedly reduced blood pressure,the maximal rates of increase and decrease of left-ventricle pressure development （LV ± dp/dtmax）,left ventricular systolic pressure and heart rate in SHRs.Furthermore,IMD also inhibited protein over-expression of cardiovascular IMD receptors,myocardial Receptor Activity-Modifying Proteins （RAMP1 and RAMP2）,aortic RAMP1,RAMP2,RAMP3,and calcitonin receptor-like receptor （CRLR）;suppressed up-regulation of aortic RAMP1,RAMP2,RAMP3 and CRLR gene expression; and markedly elevated the mRNA abundance of myocardial atrial natriuretic peptide （ANP） and myocardial brain natriuretic peptide （BNP）.Additionally,IMD 1-47 administration in SHRs increased aortic cAMP concentration and reduced myocardial cAMP concentration.Conclusion These findings support the speculation that IMD,as a cardiovascular active peptide,is involved in blood pressure reduction and cardiac function amelioration during hypertension.The mechanism underlying this effect may involve IMD binding of a receptor complex formed by RAMPs and CRLR,and consequential regulation of cAMP levels and other cardiovascular active factors,such as ANP and BNP.展开更多
文摘肺癌是当今世界上最受关注的癌症之一,其发病率逐年上升,死亡率极高。本论文将要对非小细胞癌中的肺腺癌进行研究,该类型是肺癌中发病率最高的种类,其癌细胞的浸润性强,因此常会破坏胸膜的正常组织及功能,引起胸腔积液。我所研究的CALCRL基因是一种蛋白质编码基因,属于细胞表面受体中最大的家族G-蛋白偶联受体的成员,它通过多种相关的信号通路参与调节重要的生命活动,如参与细胞增殖、细胞凋亡等。肿瘤组织是由于细胞恶性增殖与凋亡程序发生异常所造成的,而该基因表达产物具有调节细胞增殖与凋亡的功能,因此本论文将把该基因所参与的调节细胞增殖与凋亡的细胞通路作为重点展开研究。本研究主要使用TCGA、human protein atlas、Kmplotter数据库初步探讨CALCRL的在肺腺癌中的表达及其与患者生存预后的关系,研究其在肺组织中高度表达对于患者生存率的影响,该基因将有可能成为肺腺癌的靶向治疗目标或早期的诊断依据。
文摘Objective To examine the effects of exogenously administered intermedin （IMD,adrenomedullin-2） on arterial blood pressure,cardiac function and the cardiovascular IMD receptor system in spontaneously hypertensive rats （SHRs） as well as to investigate the associated mechanisms.Methods Thirteen week-old male rats were divided in Wistar Kyoto （WKY） group （n =12）,SHR group （n =12）,IMD group （SHRs infused with IMD 1-47 500 ng/kg per hour,n =12）,and ADM group （SHRs infused with adrenomedullin 500 ng/kg per hour,n =12）.Results A two-week continuous administration of low dose IMD 1-47 via mini-osmotic pumps markedly reduced blood pressure,the maximal rates of increase and decrease of left-ventricle pressure development （LV ± dp/dtmax）,left ventricular systolic pressure and heart rate in SHRs.Furthermore,IMD also inhibited protein over-expression of cardiovascular IMD receptors,myocardial Receptor Activity-Modifying Proteins （RAMP1 and RAMP2）,aortic RAMP1,RAMP2,RAMP3,and calcitonin receptor-like receptor （CRLR）;suppressed up-regulation of aortic RAMP1,RAMP2,RAMP3 and CRLR gene expression; and markedly elevated the mRNA abundance of myocardial atrial natriuretic peptide （ANP） and myocardial brain natriuretic peptide （BNP）.Additionally,IMD 1-47 administration in SHRs increased aortic cAMP concentration and reduced myocardial cAMP concentration.Conclusion These findings support the speculation that IMD,as a cardiovascular active peptide,is involved in blood pressure reduction and cardiac function amelioration during hypertension.The mechanism underlying this effect may involve IMD binding of a receptor complex formed by RAMPs and CRLR,and consequential regulation of cAMP levels and other cardiovascular active factors,such as ANP and BNP.
