急性髓细胞性白血病(acu te myel o id leukemia,AML)的骨髓或外周血原始细胞一般需≥20%,但是伴t(8;21)(q22;q22.1);RUNX1-RUNX1T1(AML1-ETO)、inv(16)(p13.1q22)或t(16;16)(p13.1;q22);CBFB-MYH11和PML-RARA的AML,原始细胞比例可以低...急性髓细胞性白血病(acu te myel o id leukemia,AML)的骨髓或外周血原始细胞一般需≥20%,但是伴t(8;21)(q22;q22.1);RUNX1-RUNX1T1(AML1-ETO)、inv(16)(p13.1q22)或t(16;16)(p13.1;q22);CBFB-MYH11和PML-RARA的AML,原始细胞比例可以低于20%,但临床上少见。本研究报道1例原始细胞<20%伴RUNX1-RUNX1T1(AML1-ETO)阳性的AML病例。展开更多
Parkinson’s disease is characterized by synucleinopathy-associated neurodegeneration.Previous studies have shown that glucagon-like peptide-1(GLP-1)has beneficial effects in a mouse model of Parkinson’s disease indu...Parkinson’s disease is characterized by synucleinopathy-associated neurodegeneration.Previous studies have shown that glucagon-like peptide-1(GLP-1)has beneficial effects in a mouse model of Parkinson’s disease induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine.However,the effect of GLP-1 on intrinsic synuclein malfunction remains unclear.In this study,we investigated the effect of Lactococcus lactis MG1363-pMG36e-GLP-1 on parkinsonism in SncaA53T transgenic mice and explored the underlying mechanisms.Our data showed that Lactococcus lactis MG1363-pMG36e-GLP-1 inhibited dopaminergic neuronal death,reduced pathological aggregation ofα-synuclein,and decreased movement disorders in SncaA53T transgenic mice.Furthermore,Lactococcus lactis MG1363-pMG36e-GLP-1 downregulated lipopolysaccharide-related inflammation,reduced cerebral activation of microglia and astrocytes,and promoted cell survival via the GLP-1 receptor/PI3K/Akt pathway in the substantia nigra.Additionally,Lactococcus lactis MG1363-pMG36e-GLP-1 decreased serum levels of pro-inflammatory molecules including lipopolysaccharide,lipopolysaccharide binding protein,interleukin-1β,and interleukin-6.Gut histopathology and western blotting further revealed that Lactococcus lactis MG1363-pMG36e-GLP-1 increased the expression of gut integrity-related proteins and reduced lipopolysaccharide-related inflammation by reversing gut dysbiosis in SncaA53T transgenic mice.Our findings showed that the beneficial effect of Lactococcus lactis MG1363-pMG36e-GLP-1 on parkinsonism traits in SncaA53T transgenic mice is mediated by microglial polarization and the reversal of dysbiosis.Collectively,our findings suggest that Lactococcus lactis MG1363-pMG36e-GLP-1 is a promising therapeutic agent for the treatment of Parkinson’s disease.展开更多
文摘急性髓细胞性白血病(acu te myel o id leukemia,AML)的骨髓或外周血原始细胞一般需≥20%,但是伴t(8;21)(q22;q22.1);RUNX1-RUNX1T1(AML1-ETO)、inv(16)(p13.1q22)或t(16;16)(p13.1;q22);CBFB-MYH11和PML-RARA的AML,原始细胞比例可以低于20%,但临床上少见。本研究报道1例原始细胞<20%伴RUNX1-RUNX1T1(AML1-ETO)阳性的AML病例。
文摘目的探讨RUNX1-RUNX1T1+急性髓细胞白血病(AML)RUNX1-RUNX1T1转录本(融合转录本)的动态变化及其对预后的指导作用。方法回顾性队列研究,纳入2006年10月1日至2015年3月31日在首都医科大学附属北京儿童医院(我院)采用BCH-AML 05方案治疗的全部RUNX1-RUNX1T1+AML患儿,根据初诊(time point 0,TP0)、诱导Ⅰ后(TP1)、诱导Ⅱ后(TP2)、巩固Ⅰ后(TP3)、巩固Ⅱ后(TP4)和巩固Ⅲ后(TP5)融合转录本的检测情况,相应地分为高表达组和低表达组,分组界值分别为每104GUS中融合转录本拷贝数10~4、10~3、10~2、10、1和0,随访至2017年12月31日。采用χ2检验比较初诊高表达组和低表达组临床和生物学特征的差异;Kaplan-Meier法分析患儿5年总生存(OS)和无复发生存(RFS),通过Log-rank检验比较组间差异,以Cox比例风险回归模型分析影响患儿5年OS和RFS的独立预后因素。结果符合本文纳入标准的患儿52例,男27例,中位年龄8(2~14)岁;2例TP1时失访,21例在随访中死亡,其余29例中位随访时间62.2(34.0~134.3)个月。(1)初诊高表达组(17/50)和低表达组(33/50)患儿的年龄、性别、WBC、Hb、PLT计数和骨髓幼稚细胞数、除CD15(P=0.004)外的免疫学表型、TP1~TP5的MRD差异均无统计学意义。(2)单因素分析表明,TP1和TP5融合转录本水平与患儿的5年OS和RFS相关,性别、初诊PLT与5年OS相关,初诊WBC与5年RFS相关。多因素分析显示,TP1时融合转录本水平>103拷贝/104GUS是5年OS的独立不良因素(HR=0.095,95%:CI:0.011~0.860,P=0.036)。结论 RUNX1-RUNX1T1+AML患儿第1次诱导治疗结束后融合转录本水平是患儿长期预后的独立影响因素。
基金supported by grants from the Jiangxi Provincial Natural Science Foundation,No.20242BAB26134(to XF)the National Natural Science Foundation of China,Nos.82060638(to TC),82060222(to XF),82460237(to XF)+1 种基金the Major Disciplines of Academic and Technical Leaders Project of Jiangxi Province,Nos.20194BCJ22032(to TC),20213BCJL22049(to XF)Science and Technology Plan of Jiangxi Health Planning Committee,No.202210390(to XF).
文摘Parkinson’s disease is characterized by synucleinopathy-associated neurodegeneration.Previous studies have shown that glucagon-like peptide-1(GLP-1)has beneficial effects in a mouse model of Parkinson’s disease induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine.However,the effect of GLP-1 on intrinsic synuclein malfunction remains unclear.In this study,we investigated the effect of Lactococcus lactis MG1363-pMG36e-GLP-1 on parkinsonism in SncaA53T transgenic mice and explored the underlying mechanisms.Our data showed that Lactococcus lactis MG1363-pMG36e-GLP-1 inhibited dopaminergic neuronal death,reduced pathological aggregation ofα-synuclein,and decreased movement disorders in SncaA53T transgenic mice.Furthermore,Lactococcus lactis MG1363-pMG36e-GLP-1 downregulated lipopolysaccharide-related inflammation,reduced cerebral activation of microglia and astrocytes,and promoted cell survival via the GLP-1 receptor/PI3K/Akt pathway in the substantia nigra.Additionally,Lactococcus lactis MG1363-pMG36e-GLP-1 decreased serum levels of pro-inflammatory molecules including lipopolysaccharide,lipopolysaccharide binding protein,interleukin-1β,and interleukin-6.Gut histopathology and western blotting further revealed that Lactococcus lactis MG1363-pMG36e-GLP-1 increased the expression of gut integrity-related proteins and reduced lipopolysaccharide-related inflammation by reversing gut dysbiosis in SncaA53T transgenic mice.Our findings showed that the beneficial effect of Lactococcus lactis MG1363-pMG36e-GLP-1 on parkinsonism traits in SncaA53T transgenic mice is mediated by microglial polarization and the reversal of dysbiosis.Collectively,our findings suggest that Lactococcus lactis MG1363-pMG36e-GLP-1 is a promising therapeutic agent for the treatment of Parkinson’s disease.
