With validamycin A.（0.2 billion spores/ml） Paenibacillus polymyxa DN-1 3% AS as the test agent, the effects of different dosage and different application time on the control efficacy for＇ rich sheath blight were in...With validamycin A.（0.2 billion spores/ml） Paenibacillus polymyxa DN-1 3% AS as the test agent, the effects of different dosage and different application time on the control efficacy for＇ rich sheath blight were investigated. The results of two- year test showed that when the application amount was in the range of 45-90 g.a.i/ hm^2, the field efficacy of validamycin A-（0.2 billion spores/ml） P. polymyxa DN-1 3% AS in the initial infection stage of rich sheath blight （Le., the diseased plant rate was below 5%） reached 80.38%-89.06%, and that in the peak infection stage （i.e., the diseased plant rate was higher than 10%） reached only 41.12%-53.26%. The field efficacy of validamycin A.（0.2 billion spores/ml） P. polymyxa DN-1 3% AS at the early onset of rich sheath blight was significantly better than that at the onset, so that the application time of validamycin A .（0.2 billion spores/ml） P. polymyxa DN-1 3% AS should be appropriately brought forward in the prevention and control of rice sheath blight.展开更多
目的探索酮还原酶家族1成员C3(aldo-keto reductase family 1 member C3,AKR1C3)对乳腺癌恶性细胞生物学行为的干预作用及对程序性细胞死亡蛋白/程序性死亡-配体1(programmed cell death protein1/programmed death-ligand1,PD-1/PD-L)...目的探索酮还原酶家族1成员C3(aldo-keto reductase family 1 member C3,AKR1C3)对乳腺癌恶性细胞生物学行为的干预作用及对程序性细胞死亡蛋白/程序性死亡-配体1(programmed cell death protein1/programmed death-ligand1,PD-1/PD-L)通路的影响。方法把MCF-7人乳腺癌细胞中NC组和AKR1C3组分别转染空质粒和AKR1C3质粒,采用MTT法检测转染后24 h、48 h、72 h细胞活力;采用流式细胞技术测定各组细胞的存活率以及早期、晚期凋亡比例;通过Transwell实验对各组细胞的迁移和侵袭能力进行检测;通过Western blot检测各组细胞PD-1、PD-L1、蛋白激酶B(protein kinase b,AKT)蛋白表达水平。使用C57BL/6小鼠构建荷瘤模型,将采用人乳腺癌MCF-7细胞转染NC质粒和AKR1C3质粒进行细胞荷瘤,每3 d测量瘤体积,持续21 d,绘制两组小鼠肿瘤生长曲线,并于实验终点测量肿瘤质量。结果相较于NC组,AKR1C3组细胞活力降低(P<0.05),并且具有时间依赖效应(P<0.05),迁移和侵袭能力降低(P<0.05),早期凋亡和晚期凋亡比例升高(P<0.05),PD-1、PD-L1、AKT蛋白表达水平降低(P<0.05)。动物实验表明,AKR1C3组小鼠肿瘤体积降低,肿瘤质量下降(P<0.05)。结论AKR1C3可以抑制人乳腺癌细胞恶性生物学行为,抑制PD-1/PDL1信号通路蛋白表达。展开更多
目的探讨慢性乙型肝炎病毒(hepatitis B virus,HBV)感染相关肝病患者血清壳多糖酶3样蛋白1(chitosan 3-like protein 1,CHI3L1)水平与γ-谷氨酰转肽酶/血小板比值(GPR)和天冬氨酸氨基转移酶/血小板比值(APRI)的相关性及诊断价值。方法...目的探讨慢性乙型肝炎病毒(hepatitis B virus,HBV)感染相关肝病患者血清壳多糖酶3样蛋白1(chitosan 3-like protein 1,CHI3L1)水平与γ-谷氨酰转肽酶/血小板比值(GPR)和天冬氨酸氨基转移酶/血小板比值(APRI)的相关性及诊断价值。方法将纳入的慢性HBV感染者221例,分为慢性乙型肝炎(CHB,n=49)、肝硬化(LC,n=132)和原发性肝癌(PHC,n=40)3组。分别检测血清CHI3L1、丙氨酸氨基转移酶(ALT)、天冬氨酸氨基转移酶(AST)、γ-谷氨酰转肽酶(γ-GGT)和血小板(PLT),计算GPR及APRI。结果①PHC组年龄、CHI3L1、γ-GGT、GPR及APRI显著高于CHB组(P<0.05),ALT、PLT显著降低(P<0.05);PHC组AST、γ-GGT、GPR及APRI显著高于LC组(P<0.05)。②CHI3L1诊断CHB、LC和PHC的AUC分别为0.748(95%CI:0.640~0.856)、0.933(95%CI:0.896~0.971)和0.928(95%CI:0.860~0.997);GPR诊断CHB、LC和PHC的AUC分别为0.852(95%CI:0.767~0.938)、0.945(95%CI:0.912~0.978)和0.992(95%CI:0.980~1.000);APRI诊断CH组、LC和PHC的AUC分别为0.665(9%CI:0.543~0.786)、0.737(95%CI:0.661~0.813)和0.893(95%CI:0.811~0.974)。③Spearman相关性分析表明,3组患者CHI3L1与GPR、APRI均呈正相关(P<0.05)。结论CHB组、LC组和PHC组中的CHI3L1与GPR的相关性明显优于CHI3L1与APRI的相关性,可用GPR来替代CHI3L1预测肝脏的病变程度。展开更多
基金Supported by National Agricultural Science and Technology Achievement Transformation Fund of China(2010GB2C300196)Modern Agricultural Production Development Fund(Rice Industry)Project of Anhui Academy of Agricultural SciencesIntegration and Demonstration of Chemical Fertilizer and Agrochemical Reduction and Efficiency Increasing Technology for Rice in Rice-wheat(rape)Rotation Areas in Anhui(2016YFD0200806)~~
文摘With validamycin A.（0.2 billion spores/ml） Paenibacillus polymyxa DN-1 3% AS as the test agent, the effects of different dosage and different application time on the control efficacy for＇ rich sheath blight were investigated. The results of two- year test showed that when the application amount was in the range of 45-90 g.a.i/ hm^2, the field efficacy of validamycin A-（0.2 billion spores/ml） P. polymyxa DN-1 3% AS in the initial infection stage of rich sheath blight （Le., the diseased plant rate was below 5%） reached 80.38%-89.06%, and that in the peak infection stage （i.e., the diseased plant rate was higher than 10%） reached only 41.12%-53.26%. The field efficacy of validamycin A.（0.2 billion spores/ml） P. polymyxa DN-1 3% AS at the early onset of rich sheath blight was significantly better than that at the onset, so that the application time of validamycin A .（0.2 billion spores/ml） P. polymyxa DN-1 3% AS should be appropriately brought forward in the prevention and control of rice sheath blight.
文摘目的探讨慢性乙型肝炎病毒(hepatitis B virus,HBV)感染相关肝病患者血清壳多糖酶3样蛋白1(chitosan 3-like protein 1,CHI3L1)水平与γ-谷氨酰转肽酶/血小板比值(GPR)和天冬氨酸氨基转移酶/血小板比值(APRI)的相关性及诊断价值。方法将纳入的慢性HBV感染者221例,分为慢性乙型肝炎(CHB,n=49)、肝硬化(LC,n=132)和原发性肝癌(PHC,n=40)3组。分别检测血清CHI3L1、丙氨酸氨基转移酶(ALT)、天冬氨酸氨基转移酶(AST)、γ-谷氨酰转肽酶(γ-GGT)和血小板(PLT),计算GPR及APRI。结果①PHC组年龄、CHI3L1、γ-GGT、GPR及APRI显著高于CHB组(P<0.05),ALT、PLT显著降低(P<0.05);PHC组AST、γ-GGT、GPR及APRI显著高于LC组(P<0.05)。②CHI3L1诊断CHB、LC和PHC的AUC分别为0.748(95%CI:0.640~0.856)、0.933(95%CI:0.896~0.971)和0.928(95%CI:0.860~0.997);GPR诊断CHB、LC和PHC的AUC分别为0.852(95%CI:0.767~0.938)、0.945(95%CI:0.912~0.978)和0.992(95%CI:0.980~1.000);APRI诊断CH组、LC和PHC的AUC分别为0.665(9%CI:0.543~0.786)、0.737(95%CI:0.661~0.813)和0.893(95%CI:0.811~0.974)。③Spearman相关性分析表明,3组患者CHI3L1与GPR、APRI均呈正相关(P<0.05)。结论CHB组、LC组和PHC组中的CHI3L1与GPR的相关性明显优于CHI3L1与APRI的相关性,可用GPR来替代CHI3L1预测肝脏的病变程度。
