AIM： To investigate the changes of chaperonin60 （Cpn60） and pancreatic enzymes in pancreatic acinar cells, and to explore their roles in the development of experimental diabetes and acute pancreatitis （AP）. METH...AIM： To investigate the changes of chaperonin60 （Cpn60） and pancreatic enzymes in pancreatic acinar cells, and to explore their roles in the development of experimental diabetes and acute pancreatitis （AP）. METHODS： Two different pathological models were replicated in Sprague-Dawley rats： streptozotocininduced diabetes and sodium deoxycholate-induced AP. The contents of Cpn60 and pancreatic enzymes in different compartments of the acinar cells were measured by quantitative immunoo/tochemistry. RESULTS： The levels of Cpn60 significanUy increased in diabetes, but decreased in AP, especially in the zymogen granules of the pancreatic acinar cells. The elevation of Cpn60 was accompanied with the increased levels of pancreatic lipase and chymotrypsinogen in diabetes. However, a decreased Cpn60 level was accompanied by high levels of lipase and chymotrypsinogen in AP. The amylase level was markedly reduced in both the pathological conditions. CONCLUSION： The equilibrium between Cpn60 and pancreaUc enzymes in the acinar cells breaks in AP, and Cpn60 content decreases, suggesting an insufficient chaperone capacity. This may promote the aggregation and autoactivation of the premature enzymes in the pancreatic acinar cells and play roles in the development of AR展开更多
目的:探讨不同严重程度的实验性急性胰腺炎(AP)时动物肝脏和胰腺组织中伴侣因子60(Cpn60)的表达特点及可能的意义。方法:用雨蛙肽腹腔注射复制急性轻型胰腺炎(MAP)小鼠模型;用去氧胆酸钠逆胰胆管注射复制急性重型胰腺炎(SAP)大鼠模型;...目的:探讨不同严重程度的实验性急性胰腺炎(AP)时动物肝脏和胰腺组织中伴侣因子60(Cpn60)的表达特点及可能的意义。方法:用雨蛙肽腹腔注射复制急性轻型胰腺炎(MAP)小鼠模型;用去氧胆酸钠逆胰胆管注射复制急性重型胰腺炎(SAP)大鼠模型;分别设各自正常对照组(control)和假手术对照组(sham组)。造模后1、5、10 h分批处死动物,取肝、胰组织。病理切片观测胰腺组织病变情况;免疫共沉淀(IP)及Western blotting技术确定肝、胰组织Cpn60蛋白条带位置及表达的改变。结果:MAP及SAP组的胰腺组织分别出现水肿性和出血坏死性改变。MAP组及其sham组1 h Cpn60表达量明显低于正常小鼠,而5 h的表达量显著升高。SAP组和相应的sham组1 h Cpn60表达量明显增高,随后降低,从1 h到10 h SAP组的下降幅度明显大于相应sham组。结果还发现,小鼠、大鼠胰腺和肝脏组织Cpn60蛋白有两条带,在各组及其不同时段,该蛋白条带的变化各有不同。结论:大鼠、小鼠胰腺和肝脏组织中Cpn60蛋白表达呈双带,且在AP时变化不一,提示AP时不仅有Cpn60蛋白量的表达异常,还可能存在质的异常,这些异常与AP发生、发展的关系有待研究。展开更多
The family of HSP60 belongs to heat shock proteins with highly species conservatism and some important biologic functions. It can help other proteins for their assembling, folding and translocating, and plays a role i...The family of HSP60 belongs to heat shock proteins with highly species conservatism and some important biologic functions. It can help other proteins for their assembling, folding and translocating, and plays a role in protecting cells against injuries and other types of stress. In addition, HSP60 is frequently recognized by the immune system as predominant antigens during infections and the progression of certain autoimmune diseases and might provide a novel strategy for the development of immunotherapeutics. This review focuses on distribution, molecular chaperone mechanism, function and gene expression regulation of HSP60. [展开更多
[目的]比较稳定性冠心病患者热休克蛋白60（HSP60）抗体在药物洗脱支架（DES）置入前后的浓度变化,探讨基线HSP60抗体水平与心血管事件的关系.[方法]入选98例稳定性冠心病,收集临床资料.以酶联免疫吸附法测定冠状动脉介入（PCI）前后血...[目的]比较稳定性冠心病患者热休克蛋白60（HSP60）抗体在药物洗脱支架（DES）置入前后的浓度变化,探讨基线HSP60抗体水平与心血管事件的关系.[方法]入选98例稳定性冠心病,收集临床资料.以酶联免疫吸附法测定冠状动脉介入（PCI）前后血浆HSP60抗体浓度.根据基线HSP60抗体水平分层,随访8个月主要不良心血管事件.[结果]DES置入8个月后随访HSP60抗体浓度明显低于于基线水平（33.65±1.94 vs 39.94±2.73 U/mL,P=0.019）.HSP60高水平组死亡、非致死性冠状动脉综合征、再入院、再次PCI及复合终点与低水平组差异无显著性（P〉0.05）.[结论]稳定性冠心病患者药物洗脱支架置入后HSP60抗体水平显著降低,HSP60水平与短期内主要不良心血管事件无明显相关.展开更多
目的检测中国汉族人热休克蛋白60(heat shock protein 60,hsp60)基因调控区和编码区的单核苷酸多态性(single nucleotide polymorphisms,SNPs),寻找hsp60基因的遗传标记。方法采用分片段扩增直接测序的方法检测60名汉族人hsp60基因的5...目的检测中国汉族人热休克蛋白60(heat shock protein 60,hsp60)基因调控区和编码区的单核苷酸多态性(single nucleotide polymorphisms,SNPs),寻找hsp60基因的遗传标记。方法采用分片段扩增直接测序的方法检测60名汉族人hsp60基因的5’侧翼区、部分编码区和内含子区,将测序结果与美国国家生物技术信息中心(National Center for Biotechnology Information,NCBI)及国际人类基因组单体型图计划(International HapMap Project,HapMap)中日本人、欧洲人及非洲人的序列进行对比,确定中国汉族人群hsp60基因SNPs的位置、类型和频率。结果在hsp60基因2号外显子区发现1个新的同义SNP,位于2号染色体198189061位,最小等位基因频率(the minor allele frequency,MAF)为0．025。检测区域内包含11个已报道的SNPs,7个未在研究人群中检出；4个被检出的SNPs为rs1116734、rs3749095、rs1050347、rs8539,MAF分别为0．51、0．30、0．29、0．49；rs1116734、rs1050347、rs8539在日本人和中国汉族人群中的分布相似；rs3749095在中国汉族人中较常见,在日本人种中未检出；rs8539在欧洲及非洲人中的分布与在中国人的分布差异有统计学意义(P＜0．01)。结论中国汉族人群hsp60的SNPs分布有别于其他人种,rs1116734、rs3749095、rs1050347、rs8539是hsp60基因在中国汉族人群中较常见的SNPs,可为Hsp60蛋白功能研究及hsp60基因与疾病关联研究候选SNPs的选择提供科学依据。展开更多
基金Supported by the National Natural Science Foundation of China,No. 30370643 Shanghai Municipal Health Bureau, China,No. 034111
文摘AIM： To investigate the changes of chaperonin60 （Cpn60） and pancreatic enzymes in pancreatic acinar cells, and to explore their roles in the development of experimental diabetes and acute pancreatitis （AP）. METHODS： Two different pathological models were replicated in Sprague-Dawley rats： streptozotocininduced diabetes and sodium deoxycholate-induced AP. The contents of Cpn60 and pancreatic enzymes in different compartments of the acinar cells were measured by quantitative immunoo/tochemistry. RESULTS： The levels of Cpn60 significanUy increased in diabetes, but decreased in AP, especially in the zymogen granules of the pancreatic acinar cells. The elevation of Cpn60 was accompanied with the increased levels of pancreatic lipase and chymotrypsinogen in diabetes. However, a decreased Cpn60 level was accompanied by high levels of lipase and chymotrypsinogen in AP. The amylase level was markedly reduced in both the pathological conditions. CONCLUSION： The equilibrium between Cpn60 and pancreaUc enzymes in the acinar cells breaks in AP, and Cpn60 content decreases, suggesting an insufficient chaperone capacity. This may promote the aggregation and autoactivation of the premature enzymes in the pancreatic acinar cells and play roles in the development of AR
文摘目的:探讨不同严重程度的实验性急性胰腺炎(AP)时动物肝脏和胰腺组织中伴侣因子60(Cpn60)的表达特点及可能的意义。方法:用雨蛙肽腹腔注射复制急性轻型胰腺炎(MAP)小鼠模型;用去氧胆酸钠逆胰胆管注射复制急性重型胰腺炎(SAP)大鼠模型;分别设各自正常对照组(control)和假手术对照组(sham组)。造模后1、5、10 h分批处死动物,取肝、胰组织。病理切片观测胰腺组织病变情况;免疫共沉淀(IP)及Western blotting技术确定肝、胰组织Cpn60蛋白条带位置及表达的改变。结果:MAP及SAP组的胰腺组织分别出现水肿性和出血坏死性改变。MAP组及其sham组1 h Cpn60表达量明显低于正常小鼠,而5 h的表达量显著升高。SAP组和相应的sham组1 h Cpn60表达量明显增高,随后降低,从1 h到10 h SAP组的下降幅度明显大于相应sham组。结果还发现,小鼠、大鼠胰腺和肝脏组织Cpn60蛋白有两条带,在各组及其不同时段,该蛋白条带的变化各有不同。结论:大鼠、小鼠胰腺和肝脏组织中Cpn60蛋白表达呈双带,且在AP时变化不一,提示AP时不仅有Cpn60蛋白量的表达异常,还可能存在质的异常,这些异常与AP发生、发展的关系有待研究。
文摘The family of HSP60 belongs to heat shock proteins with highly species conservatism and some important biologic functions. It can help other proteins for their assembling, folding and translocating, and plays a role in protecting cells against injuries and other types of stress. In addition, HSP60 is frequently recognized by the immune system as predominant antigens during infections and the progression of certain autoimmune diseases and might provide a novel strategy for the development of immunotherapeutics. This review focuses on distribution, molecular chaperone mechanism, function and gene expression regulation of HSP60. [
文摘[目的]比较稳定性冠心病患者热休克蛋白60（HSP60）抗体在药物洗脱支架（DES）置入前后的浓度变化,探讨基线HSP60抗体水平与心血管事件的关系.[方法]入选98例稳定性冠心病,收集临床资料.以酶联免疫吸附法测定冠状动脉介入（PCI）前后血浆HSP60抗体浓度.根据基线HSP60抗体水平分层,随访8个月主要不良心血管事件.[结果]DES置入8个月后随访HSP60抗体浓度明显低于于基线水平（33.65±1.94 vs 39.94±2.73 U/mL,P=0.019）.HSP60高水平组死亡、非致死性冠状动脉综合征、再入院、再次PCI及复合终点与低水平组差异无显著性（P〉0.05）.[结论]稳定性冠心病患者药物洗脱支架置入后HSP60抗体水平显著降低,HSP60水平与短期内主要不良心血管事件无明显相关.
文摘目的检测中国汉族人热休克蛋白60(heat shock protein 60,hsp60)基因调控区和编码区的单核苷酸多态性(single nucleotide polymorphisms,SNPs),寻找hsp60基因的遗传标记。方法采用分片段扩增直接测序的方法检测60名汉族人hsp60基因的5’侧翼区、部分编码区和内含子区,将测序结果与美国国家生物技术信息中心(National Center for Biotechnology Information,NCBI)及国际人类基因组单体型图计划(International HapMap Project,HapMap)中日本人、欧洲人及非洲人的序列进行对比,确定中国汉族人群hsp60基因SNPs的位置、类型和频率。结果在hsp60基因2号外显子区发现1个新的同义SNP,位于2号染色体198189061位,最小等位基因频率(the minor allele frequency,MAF)为0．025。检测区域内包含11个已报道的SNPs,7个未在研究人群中检出；4个被检出的SNPs为rs1116734、rs3749095、rs1050347、rs8539,MAF分别为0．51、0．30、0．29、0．49；rs1116734、rs1050347、rs8539在日本人和中国汉族人群中的分布相似；rs3749095在中国汉族人中较常见,在日本人种中未检出；rs8539在欧洲及非洲人中的分布与在中国人的分布差异有统计学意义(P＜0．01)。结论中国汉族人群hsp60的SNPs分布有别于其他人种,rs1116734、rs3749095、rs1050347、rs8539是hsp60基因在中国汉族人群中较常见的SNPs,可为Hsp60蛋白功能研究及hsp60基因与疾病关联研究候选SNPs的选择提供科学依据。
