目的探讨淀粉样肽前体样蛋白2(APLP2)基因单核苷酸多态性与冠状动脉粥样硬化性心脏病发生率的关联性。方法选择2010年8月-2016年10月在新疆医科大学第一附属医院心脏中心住院并行冠状动脉造影术的998例患者。根据冠脉造影结果分为病例组...目的探讨淀粉样肽前体样蛋白2(APLP2)基因单核苷酸多态性与冠状动脉粥样硬化性心脏病发生率的关联性。方法选择2010年8月-2016年10月在新疆医科大学第一附属医院心脏中心住院并行冠状动脉造影术的998例患者。根据冠脉造影结果分为病例组(n=405)和对照组(n=593),采用改进的多重连接检测反应方法对APLP2基因两个多态性位点rs190276777和rs3740881进行了基因分型,并分析两组间频率分布差异。结果APLP2基因rs190276777多态性位点的基因型分布、隐性模型(CC+CG vs GG)和相加模型(CC+GG vs CG)中的分布频率在病例组和对照组存在明显差异(P<0.001)。Logistic回归分析结果显示APLP2基因rs190276777多态性位点表现为冠心病的独立危险因素(OR=1.968,95%CI:1.209~3.204,P=0.006)。结论APLP2基因rs190276777位点多态性可能是冠心病发病的潜在危险因素,人群中携带APLP2基因rs190276777多态性位点者罹患冠心病的可能性更高。展开更多
The murine microglial cell line BV2 has neuroprotective effects, but is toxic to neurons by secret-ing inlfammatory cytokines, and is an important target in the treatment of nerve inlfammation and neurodegenerative di...The murine microglial cell line BV2 has neuroprotective effects, but is toxic to neurons by secret-ing inlfammatory cytokines, and is an important target in the treatment of nerve inlfammation and neurodegenerative diseases. In the present study, we observed the effects of transfecting three amyloid precursor-like protein 2 （APLP2） C-terminal fragments （CTFs; C57, C50 and C31） in the pEGFP-N1 vector on S100A9 expression in BV2 cells. Reverse transcription-PCR, western blot assay and immunocytochemistry revealed that S100A9 protein and mRNA expression was greater in BV2 cells after CTF transfection than after mock transfection with an empty vector. Furthermore, transfection of full-length APLP2-751 resulted in low levels of S100A9 protein ex-pression. Our results show that APLP2-CTFs upregulate S100A9 protein and mRNA expression in BV2 cells, and identify a novel pathway involved in neuronal injury and apoptosis, and repair and protection in Alzheimer’s disease.展开更多
文摘目的探讨淀粉样肽前体样蛋白2(APLP2)基因单核苷酸多态性与冠状动脉粥样硬化性心脏病发生率的关联性。方法选择2010年8月-2016年10月在新疆医科大学第一附属医院心脏中心住院并行冠状动脉造影术的998例患者。根据冠脉造影结果分为病例组(n=405)和对照组(n=593),采用改进的多重连接检测反应方法对APLP2基因两个多态性位点rs190276777和rs3740881进行了基因分型,并分析两组间频率分布差异。结果APLP2基因rs190276777多态性位点的基因型分布、隐性模型(CC+CG vs GG)和相加模型(CC+GG vs CG)中的分布频率在病例组和对照组存在明显差异(P<0.001)。Logistic回归分析结果显示APLP2基因rs190276777多态性位点表现为冠心病的独立危险因素(OR=1.968,95%CI:1.209~3.204,P=0.006)。结论APLP2基因rs190276777位点多态性可能是冠心病发病的潜在危险因素,人群中携带APLP2基因rs190276777多态性位点者罹患冠心病的可能性更高。
基金supported by the Natural Science Foundation of Technology Gallery in Jilin Province of China,No.2011-15237the National Natural Science Foundation of China,No.81160159
文摘The murine microglial cell line BV2 has neuroprotective effects, but is toxic to neurons by secret-ing inlfammatory cytokines, and is an important target in the treatment of nerve inlfammation and neurodegenerative diseases. In the present study, we observed the effects of transfecting three amyloid precursor-like protein 2 （APLP2） C-terminal fragments （CTFs; C57, C50 and C31） in the pEGFP-N1 vector on S100A9 expression in BV2 cells. Reverse transcription-PCR, western blot assay and immunocytochemistry revealed that S100A9 protein and mRNA expression was greater in BV2 cells after CTF transfection than after mock transfection with an empty vector. Furthermore, transfection of full-length APLP2-751 resulted in low levels of S100A9 protein ex-pression. Our results show that APLP2-CTFs upregulate S100A9 protein and mRNA expression in BV2 cells, and identify a novel pathway involved in neuronal injury and apoptosis, and repair and protection in Alzheimer’s disease.
