目的:探讨灯盏花素对SD大鼠糖尿病模型肾组织中p47phox基因mRNA表达的影响。方法:将SD大鼠随机分为糖尿病模型(A)组、糖尿病灯盏花素治疗(B)组和正常对照(C)组,取其肾组织采用SYBR Green I实时荧光定量PCR法检测各组SD大鼠肾组织中p47p...目的:探讨灯盏花素对SD大鼠糖尿病模型肾组织中p47phox基因mRNA表达的影响。方法:将SD大鼠随机分为糖尿病模型(A)组、糖尿病灯盏花素治疗(B)组和正常对照(C)组,取其肾组织采用SYBR Green I实时荧光定量PCR法检测各组SD大鼠肾组织中p47phox基因的mRNA表达,并进行比较分析。结果:(1)对A组、B组和C组样本实时荧光定量PCRCT(cycle time)均数进行方差分析,差别有统计学意义(P<0.05)。2周时A组和B组肾组织中p47phox基因的mRNA表达分别是C组的1.92倍及1.87倍,6周时分别是C组的5.69倍及4.08倍。(2)与C组比,A组和B组的血肌酐、尿素氮和肾重/体重有升高。A组和B组相比,B组下降,相比差异有统计学意义(P<0.05)。结论:(1)糖尿病时肾脏p47phox基因的mRNA表达水平升高,氧化应激增强。(2)灯盏花素治疗降低肾脏p47phox基因的mRNA表达水平,抑制氧化应激。(3)灯盏花素治疗后糖尿病SD大鼠的血肌酐,尿素氮水平降低,肾重/体重降低。提示灯盏花素治疗能改善糖尿病SD大鼠肾脏功能,抑制肾脏肥大。展开更多
Objective:To explore whether Yizhi(Alpinia oxyphylla,AO)could treat diabetic nephropathy(DN)through the inhibition of p47phox expression which is related to oxidative stress.Methods:Model of DN was established in SD r...Objective:To explore whether Yizhi(Alpinia oxyphylla,AO)could treat diabetic nephropathy(DN)through the inhibition of p47phox expression which is related to oxidative stress.Methods:Model of DN was established in SD rats with high glucose and fat diet for 4 weeks after STZ intraperitoneal injection.The rats were randomly divided into blank group,model group,AO group and irbesartan(IRB)group.Drugs were administered for 4 weeks.Blood glucose and 24-hour urinary protein were measured regularly.The index of ROS,SOD,MDA and Nox2 were tested by ELISA and the expression of p47phox protein in renal tissues were tested by techniques of RT-PCR and Western blot.Results:The decrease of blood sugar in AO group and IRB group were not obvious(P>0.05)while the drugs could significantly reduce the amount of protein in urine(P<0.05).AO could decrease ROS,MDA and Nox2 and increase SOD(P<0.05).It also could inhibit the expression of p47phox which was increased in model group(P<0.05).The IRB group has the similar effects compared with AO group(P>0.05).Conclusion:AO could reduce the amount of 24-hour urinary protein in DN rats and the mechanism may be related to the inhibition of p47phox expression thus alleviates excessive oxidative stress response.展开更多
目的观察NADPH氧化酶抑制剂二苯基碘(DPI)和夹竹桃麻素(apocynin)对NADPH氧化酶亚基p47phox介导的活性氧(ROS)产生的影响,探讨细胞在高氧条件下,p47phox介导ROS产生的机制。方法 32周以下早产儿,尚未吸氧前取外周血2 m L,分离纯化外周...目的观察NADPH氧化酶抑制剂二苯基碘(DPI)和夹竹桃麻素(apocynin)对NADPH氧化酶亚基p47phox介导的活性氧(ROS)产生的影响,探讨细胞在高氧条件下,p47phox介导ROS产生的机制。方法 32周以下早产儿,尚未吸氧前取外周血2 m L,分离纯化外周血单个核细胞(PBMC)将所得细胞分为对照组、高氧组、高氧联合DPI处理组、高氧联合apocynin处理组进行培养。对照组置于37℃、50 m L/L的CO2培养箱中,高氧及相应处理组置于950 m L/L的O2与50 m L/L的CO2混合气体中培养48 h。采用Mitosox Red标记结合激光共聚焦显微镜检测PBMC内ROS的生成量、硫代巴比妥酸比色法检测培养液丙二醛含量、免疫荧光检测p47phox在细胞内的定位及移位率、Western blot法检测p47phox的蛋白水平。结果与高氧组相比,其余三组ROS和丙二醛明显减少,p47phox移位率与含量也显著降低;与对照组相比,高氧联合DPI处理组及高氧联合apocynin处理组ROS、丙二醛、p47phox移位率与含量并无显著差异。结论 DPI和apocynin能通过降低p47phox移位与含量来减少高氧诱导的ROS升高。展开更多
文摘目的:探讨灯盏花素对SD大鼠糖尿病模型肾组织中p47phox基因mRNA表达的影响。方法:将SD大鼠随机分为糖尿病模型(A)组、糖尿病灯盏花素治疗(B)组和正常对照(C)组,取其肾组织采用SYBR Green I实时荧光定量PCR法检测各组SD大鼠肾组织中p47phox基因的mRNA表达,并进行比较分析。结果:(1)对A组、B组和C组样本实时荧光定量PCRCT(cycle time)均数进行方差分析,差别有统计学意义(P<0.05)。2周时A组和B组肾组织中p47phox基因的mRNA表达分别是C组的1.92倍及1.87倍,6周时分别是C组的5.69倍及4.08倍。(2)与C组比,A组和B组的血肌酐、尿素氮和肾重/体重有升高。A组和B组相比,B组下降,相比差异有统计学意义(P<0.05)。结论:(1)糖尿病时肾脏p47phox基因的mRNA表达水平升高,氧化应激增强。(2)灯盏花素治疗降低肾脏p47phox基因的mRNA表达水平,抑制氧化应激。(3)灯盏花素治疗后糖尿病SD大鼠的血肌酐,尿素氮水平降低,肾重/体重降低。提示灯盏花素治疗能改善糖尿病SD大鼠肾脏功能,抑制肾脏肥大。
基金the Natural Science Foundation of Hainan Province (No. 2019CXTD407, 819QN228)the National Natural Science Foundation of China (No. 81860836)+1 种基金Scientific research Foundation of Hainan Medical University (No. HYPY201924)Innovation and Entrepreneurship Project of University Student (2020).
文摘Objective:To explore whether Yizhi(Alpinia oxyphylla,AO)could treat diabetic nephropathy(DN)through the inhibition of p47phox expression which is related to oxidative stress.Methods:Model of DN was established in SD rats with high glucose and fat diet for 4 weeks after STZ intraperitoneal injection.The rats were randomly divided into blank group,model group,AO group and irbesartan(IRB)group.Drugs were administered for 4 weeks.Blood glucose and 24-hour urinary protein were measured regularly.The index of ROS,SOD,MDA and Nox2 were tested by ELISA and the expression of p47phox protein in renal tissues were tested by techniques of RT-PCR and Western blot.Results:The decrease of blood sugar in AO group and IRB group were not obvious(P>0.05)while the drugs could significantly reduce the amount of protein in urine(P<0.05).AO could decrease ROS,MDA and Nox2 and increase SOD(P<0.05).It also could inhibit the expression of p47phox which was increased in model group(P<0.05).The IRB group has the similar effects compared with AO group(P>0.05).Conclusion:AO could reduce the amount of 24-hour urinary protein in DN rats and the mechanism may be related to the inhibition of p47phox expression thus alleviates excessive oxidative stress response.
文摘目的观察NADPH氧化酶抑制剂二苯基碘(DPI)和夹竹桃麻素(apocynin)对NADPH氧化酶亚基p47phox介导的活性氧(ROS)产生的影响,探讨细胞在高氧条件下,p47phox介导ROS产生的机制。方法 32周以下早产儿,尚未吸氧前取外周血2 m L,分离纯化外周血单个核细胞(PBMC)将所得细胞分为对照组、高氧组、高氧联合DPI处理组、高氧联合apocynin处理组进行培养。对照组置于37℃、50 m L/L的CO2培养箱中,高氧及相应处理组置于950 m L/L的O2与50 m L/L的CO2混合气体中培养48 h。采用Mitosox Red标记结合激光共聚焦显微镜检测PBMC内ROS的生成量、硫代巴比妥酸比色法检测培养液丙二醛含量、免疫荧光检测p47phox在细胞内的定位及移位率、Western blot法检测p47phox的蛋白水平。结果与高氧组相比,其余三组ROS和丙二醛明显减少,p47phox移位率与含量也显著降低;与对照组相比,高氧联合DPI处理组及高氧联合apocynin处理组ROS、丙二醛、p47phox移位率与含量并无显著差异。结论 DPI和apocynin能通过降低p47phox移位与含量来减少高氧诱导的ROS升高。