目的:评价随机尿微量白蛋白与肌酐(creatinine,Cr)比值(albumin to creatinine ratio,ACR)和尿酶联合监测在2型糖尿病早期肾损害中的价值。方法:对179例2型糖尿病患者分别收集24 h尿、随机尿,分别计算出24 h尿蛋白排泄率(urinary albumi...目的:评价随机尿微量白蛋白与肌酐(creatinine,Cr)比值(albumin to creatinine ratio,ACR)和尿酶联合监测在2型糖尿病早期肾损害中的价值。方法:对179例2型糖尿病患者分别收集24 h尿、随机尿,分别计算出24 h尿蛋白排泄率(urinary albumin excretion rate,UAER)和随机尿ACR,比较两者的相关性。再根据UAER将患者分为3组:尿微量白蛋白正常组(SDM组)、尿微量白蛋白轻度升高组(EDN组)、临床尿微量白蛋白升高组(CDN组),比较3组间患者ACR、尿N-乙酰-β-D-氨基葡萄糖苷酶(N-acetyl-beta-D-Glucosaminidase,NAG)、γ-谷氨酰转肽酶(glutamyl transpeptidase,GGT),并进行统计学分析,评价各指标的诊断效能。结果 :随机尿ACR在肾病早期与24 h UAER监测的相关度较高,且对肾早期损害的诊断效能要优于血Cr等其他指标。对糖尿病肾病患者进行ACR与肾小管相关指标尿NAG、尿GGT联合检测阳性率为83.6%,高于仅进行单项检测的阳性率。结论:随机尿ACR、尿NAG和尿GGT的联合检测是诊断和监测糖尿病患者肾脏早期损害灵敏、可靠的手段。展开更多
The results of studying inhibitory effect of streptomycin on the modified Berthelot reaction were presented in this paper and a new kinetic method for determining streptomycin in pharmaceutical preparations and human ...The results of studying inhibitory effect of streptomycin on the modified Berthelot reaction were presented in this paper and a new kinetic method for determining streptomycin in pharmaceutical preparations and human urine was developed on the basis of the obtained results. The rates of catalytic and catalytic-inhibitory reaction were monitored at 700 nm （t=25 ±0.1 ℃） using UV/vis spectrophotometer. By analyzing the spectra and experimental dependences of the catalytic and catalytic-inhibitory reaction rates on the reactant concentrations, it was noticed that streptomycin attacked nitroprusside and hypochlorite causing the inhibition of the production of 2,2＇-dicarboxylindophenol. According to this effect, an analytical decrease for determination of urea by modified Berthelot reaction appeared in the presence of small amounts of streptomycin. Beer＇s law was obeyed in the interval of streptomycin sulfate concentration from 18.2 to 182 μg·mL^-1. The detection limit calculated by two methods was obtained at 11.75 μg·mL^-1 and 8.54 μg·mL^-1. The relative standard deviation of 0.55%--8.83% and the recovery of 109.10% were determined. The obtained results were validated using the referent HPLC method.展开更多
文摘目的:评价随机尿微量白蛋白与肌酐(creatinine,Cr)比值(albumin to creatinine ratio,ACR)和尿酶联合监测在2型糖尿病早期肾损害中的价值。方法:对179例2型糖尿病患者分别收集24 h尿、随机尿,分别计算出24 h尿蛋白排泄率(urinary albumin excretion rate,UAER)和随机尿ACR,比较两者的相关性。再根据UAER将患者分为3组:尿微量白蛋白正常组(SDM组)、尿微量白蛋白轻度升高组(EDN组)、临床尿微量白蛋白升高组(CDN组),比较3组间患者ACR、尿N-乙酰-β-D-氨基葡萄糖苷酶(N-acetyl-beta-D-Glucosaminidase,NAG)、γ-谷氨酰转肽酶(glutamyl transpeptidase,GGT),并进行统计学分析,评价各指标的诊断效能。结果 :随机尿ACR在肾病早期与24 h UAER监测的相关度较高,且对肾早期损害的诊断效能要优于血Cr等其他指标。对糖尿病肾病患者进行ACR与肾小管相关指标尿NAG、尿GGT联合检测阳性率为83.6%,高于仅进行单项检测的阳性率。结论:随机尿ACR、尿NAG和尿GGT的联合检测是诊断和监测糖尿病患者肾脏早期损害灵敏、可靠的手段。
文摘The results of studying inhibitory effect of streptomycin on the modified Berthelot reaction were presented in this paper and a new kinetic method for determining streptomycin in pharmaceutical preparations and human urine was developed on the basis of the obtained results. The rates of catalytic and catalytic-inhibitory reaction were monitored at 700 nm （t=25 ±0.1 ℃） using UV/vis spectrophotometer. By analyzing the spectra and experimental dependences of the catalytic and catalytic-inhibitory reaction rates on the reactant concentrations, it was noticed that streptomycin attacked nitroprusside and hypochlorite causing the inhibition of the production of 2,2＇-dicarboxylindophenol. According to this effect, an analytical decrease for determination of urea by modified Berthelot reaction appeared in the presence of small amounts of streptomycin. Beer＇s law was obeyed in the interval of streptomycin sulfate concentration from 18.2 to 182 μg·mL^-1. The detection limit calculated by two methods was obtained at 11.75 μg·mL^-1 and 8.54 μg·mL^-1. The relative standard deviation of 0.55%--8.83% and the recovery of 109.10% were determined. The obtained results were validated using the referent HPLC method.
