目的探讨两型5-α还原酶表达情况与前列腺癌Gleason分级、血清前列腺特异性抗原(prostate specific antigen,PSA)浓度、TNM分期的相关性。方法选取2013至2014年间首都医科大学附属北京朝阳医院病理科前列腺癌的石蜡包埋组织40例,并收集...目的探讨两型5-α还原酶表达情况与前列腺癌Gleason分级、血清前列腺特异性抗原(prostate specific antigen,PSA)浓度、TNM分期的相关性。方法选取2013至2014年间首都医科大学附属北京朝阳医院病理科前列腺癌的石蜡包埋组织40例,并收集患者基本信息、前列腺体积,术前PSA浓度,术后病理TNM分期,Gleason分级等。采用χ2检验和Spearman相关分析对2种5-α还原酶表达与病理分期、Gleason分级、PSA浓度及年龄等参数的关系进行分析。结果Ⅰ型5-α还原酶在前列腺癌组织中的表达明显高于癌旁组织(P<0.001),相反Ⅱ型5-α还原酶在癌旁组织的表达强于癌组织(P=0.002),Ⅰ型5-α还原酶在癌细胞中的表达与肿瘤的恶性程度呈正相关,Gleason分级越高,病理分期越高,Ⅰ型5-α还原酶的表达越强;Ⅰ型5-α还原酶表达和血PSA浓度及年龄呈正相关。结论 5-α还原酶在前列腺癌组织中呈现差异性表达的特点,前列腺癌组织内I型酶升高,II型酶降低;I型酶的表达与年龄、PSA浓度、病理分期及Gleason分级呈正相关,在老年人群前列腺癌的发生发展中可能具有重要的作用,I型酶对判断前列腺癌的生物学行为及预后可能具有一定意义。展开更多
Objective The neuroprotective function of heat shock protein A5(HSPA5)in ischemic stroke has been confirmed.This study aimed to investigate the effects of early aerobic exercise on neurological function recovery from ...Objective The neuroprotective function of heat shock protein A5(HSPA5)in ischemic stroke has been confirmed.This study aimed to investigate the effects of early aerobic exercise on neurological function recovery from cerebral ischemia/reperfusion and to determine whether these effects are associated with the expression level of HSPA5 in the ischemic penumbra.Methods A total of 72 male Sprague-Dawley rats were randomly assigned to the ischemia and exercise group[middle cerebral artery occlusion(MCAO)-Ex,n=18],ischemia and sedentary group(MCAO-St,n=18),sham-surgery and exercise group(Sham-Ex,n=18),or sham-surgery and sedentary group(Sham-St,n=18).The MCAO-Ex and MCAO-St groups were subjected to MCAO for 60 min,whereas the Sham-Ex and Sham-St groups were subjected to an identical operation without MCAO.Rats in the MCAO-Ex and Sham-Ex groups then ran on a treadmill for 30 min once a day for 5 consecutive days.After reperfusion,the motor function of the rats was scored by the Bederson neurological function test,balance beam test,and screen test.Nissl staining was conducted to assess morphological and structural change of nerve cells in the ischemic penumbra.The reverse transcription-quantitative polymerase chain reaction was applied to detect the mRNA expression of HSPA5.Western blot analysis was conducted to determine the protein expression of HSPA5.Terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling(TUNEL)staining was carried out in the ischemic penumbra after MCAO.Results Rats receiving early treadmill exercise had lower Bederson neurological function,balance beam,and screen test scores on the 3rd,7th,and 14th days after MCAO;in addition,more neurons survived in the ischemic penumbra after MCAO,and higher mRNA and protein expression of HSPA5 and fewer TUNEL-positive stained cells were observed.Conclusion Our study demonstrated that early aerobic exercise can improve neurological function recovery after ischemia/reperfusion.Furthermore,the increased level of HSPA5 in the ischemic penumbra might be one of the mechanisms of enhanced neurological function recovery.展开更多
文摘目的探讨两型5-α还原酶表达情况与前列腺癌Gleason分级、血清前列腺特异性抗原(prostate specific antigen,PSA)浓度、TNM分期的相关性。方法选取2013至2014年间首都医科大学附属北京朝阳医院病理科前列腺癌的石蜡包埋组织40例,并收集患者基本信息、前列腺体积,术前PSA浓度,术后病理TNM分期,Gleason分级等。采用χ2检验和Spearman相关分析对2种5-α还原酶表达与病理分期、Gleason分级、PSA浓度及年龄等参数的关系进行分析。结果Ⅰ型5-α还原酶在前列腺癌组织中的表达明显高于癌旁组织(P<0.001),相反Ⅱ型5-α还原酶在癌旁组织的表达强于癌组织(P=0.002),Ⅰ型5-α还原酶在癌细胞中的表达与肿瘤的恶性程度呈正相关,Gleason分级越高,病理分期越高,Ⅰ型5-α还原酶的表达越强;Ⅰ型5-α还原酶表达和血PSA浓度及年龄呈正相关。结论 5-α还原酶在前列腺癌组织中呈现差异性表达的特点,前列腺癌组织内I型酶升高,II型酶降低;I型酶的表达与年龄、PSA浓度、病理分期及Gleason分级呈正相关,在老年人群前列腺癌的发生发展中可能具有重要的作用,I型酶对判断前列腺癌的生物学行为及预后可能具有一定意义。
基金This study was funded by Basic Research Projects in Shanxi Province(No.2015021178)Start-up Funds for Doctoral Research at Shanxi Datong University(No.2014-B-01).
文摘Objective The neuroprotective function of heat shock protein A5(HSPA5)in ischemic stroke has been confirmed.This study aimed to investigate the effects of early aerobic exercise on neurological function recovery from cerebral ischemia/reperfusion and to determine whether these effects are associated with the expression level of HSPA5 in the ischemic penumbra.Methods A total of 72 male Sprague-Dawley rats were randomly assigned to the ischemia and exercise group[middle cerebral artery occlusion(MCAO)-Ex,n=18],ischemia and sedentary group(MCAO-St,n=18),sham-surgery and exercise group(Sham-Ex,n=18),or sham-surgery and sedentary group(Sham-St,n=18).The MCAO-Ex and MCAO-St groups were subjected to MCAO for 60 min,whereas the Sham-Ex and Sham-St groups were subjected to an identical operation without MCAO.Rats in the MCAO-Ex and Sham-Ex groups then ran on a treadmill for 30 min once a day for 5 consecutive days.After reperfusion,the motor function of the rats was scored by the Bederson neurological function test,balance beam test,and screen test.Nissl staining was conducted to assess morphological and structural change of nerve cells in the ischemic penumbra.The reverse transcription-quantitative polymerase chain reaction was applied to detect the mRNA expression of HSPA5.Western blot analysis was conducted to determine the protein expression of HSPA5.Terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling(TUNEL)staining was carried out in the ischemic penumbra after MCAO.Results Rats receiving early treadmill exercise had lower Bederson neurological function,balance beam,and screen test scores on the 3rd,7th,and 14th days after MCAO;in addition,more neurons survived in the ischemic penumbra after MCAO,and higher mRNA and protein expression of HSPA5 and fewer TUNEL-positive stained cells were observed.Conclusion Our study demonstrated that early aerobic exercise can improve neurological function recovery after ischemia/reperfusion.Furthermore,the increased level of HSPA5 in the ischemic penumbra might be one of the mechanisms of enhanced neurological function recovery.
