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Role of urinary NAG enzyme in early detection of renal impairment in cystic fibrosis patients
Egyptian Pediatric Association Gazette Pub Date : 2022-02-21 , DOI: 10.1186/s43054-022-00099-x
Hanan Mohsen Osman 1 , Amal Moustafa Hagras 1 , Ahmed M. Badr 1 , Mona Mostafa El Falaki 1 , Ahmed Saad Badawy 1 , Manal Michel Wilson 2
Affiliation  

Cystic fibrosis (CF) is the most common life-limiting autosomal recessive disease among people in the USA and Europe with increased prevalence in Egypt. Affected children are in danger of acute kidney injury and the development of chronic renal disease through exposure to multiple nephrotoxic agents. N-acetyl beta-D-glucosaminidase (NAG) is a lysosomal enzyme present in high concentrations in the proximal tubular cells, thus raising urinary NAG levels to reflect tubular dysfunction. The aim of our study is to detect the role of the urinary NAG enzyme in the early detection of renal impairment in CF patients. This cross-sectional study enrolled 40 CF patients diagnosed in the CF Clinic in Children’s Hospital of Cairo University. They were age- and sex-matched to 40 healthy controls. All patients had glomerular filtration rate (GFR), serum creatinine, blood urea nitrogen (BUN), albumin/creatinine (A/C) ratio measured, urine analysis, urinary NAG enzyme using enzyme-linked immunosorbent assay (ELISA), and renal ultrasound (U/S) were done. Our study showed high levels of urinary NAG in cases with a significant difference between cases and controls (P value < 0.001). There was a significant correlation between urinary NAG enzyme elevation and A/C ratio in urine, nephrotoxic drugs administration, and duration of disease (P value = 0.002, 0.005, 0.019), respectively. Our study suggested that the NAG enzyme is a good early detector of renal impairment in CF patients before the conventional laboratory assays become deranged.

中文翻译:

尿 NAG 酶在囊性纤维化患者肾功能损害早期检测中的作用

囊性纤维化 (CF) 是美国和欧洲人群中最常见的限制生命的常染色体隐性遗传病,在埃及的患病率有所增加。受影响的儿童因接触多种肾毒性药物而面临急性肾损伤和发展为慢性肾病的危险。N-乙酰 β-D-氨基葡萄糖苷酶 (NAG) 是一种溶酶体酶,在近端肾小管细胞中以高浓度存在,从而提高尿 NAG 水平以反映肾小管功能障碍。我们研究的目的是检测尿 NAG 酶在早期发现 CF 患者肾功能损害中的作用。这项横断面研究招募了 40 名在开罗大学儿童医院 CF 诊所诊断出的 CF 患者。他们的年龄和性别与 40 名健康对照者相匹配。所有患者的肾小球滤过率(GFR),进行了血清肌酐、血尿素氮 (BUN)、白蛋白/肌酐 (A/C) 比值测量、尿液分析、使用酶联免疫吸附试验 (ELISA) 的尿 NAG 酶和肾脏超声 (U/S)。我们的研究表明,在病例和对照组之间存在显着差异的病例中尿 NAG 水平较高(P 值 < 0.001)。尿NAG酶升高与尿A/C比、肾毒性药物给药和病程之间存在显着相关性(P值分别=0.002、0.005、0.019)。我们的研究表明,在常规实验室检测变得混乱之前,NAG 酶是 CF 患者肾功能损害的良好早期检测器。和肾脏超声(U / S)。我们的研究表明,在病例和对照组之间存在显着差异的病例中尿 NAG 水平较高(P 值 < 0.001)。尿NAG酶升高与尿A/C比、肾毒性药物给药和病程之间存在显着相关性(P值分别=0.002、0.005、0.019)。我们的研究表明,在常规实验室检测变得混乱之前,NAG 酶是 CF 患者肾功能损害的良好早期检测器。和肾脏超声(U / S)。我们的研究表明,在病例和对照组之间存在显着差异的病例中尿 NAG 水平较高(P 值 < 0.001)。尿NAG酶升高与尿A/C比、肾毒性药物给药和病程之间存在显着相关性(P值分别=0.002、0.005、0.019)。我们的研究表明,在常规实验室检测变得混乱之前,NAG 酶是 CF 患者肾功能损害的良好早期检测器。和病程(P 值 = 0.002, 0.005, 0.019)。我们的研究表明,在常规实验室检测变得混乱之前,NAG 酶是 CF 患者肾功能损害的良好早期检测器。和病程(P 值 = 0.002, 0.005, 0.019)。我们的研究表明,在常规实验室检测变得混乱之前,NAG 酶是 CF 患者肾功能损害的良好早期检测器。
更新日期:2022-02-21
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