Diagnosis value of urinary type Ⅳ collagen, NAG and serum CysC,β2-MG for diabetic nephropathy
10.3760/cma.j.issn.1008-6315.2011.01.021
- VernacularTitle:尿Ⅳ型胶原、N-乙酰-β-D-葡萄糖苷酶和血清胱抑素C、β2-微球蛋白用于糖尿病肾病辅助诊断的效能比较
- Author:
Yuquan LIANG
;
Yuanqing ZHOU
;
Ruilian LIANG
;
Jianmin XIE
;
Yuchan CHEN
;
Jianwei LUO
;
Jianhui LIU
- Publication Type:Journal Article
- Keywords:
Diabetic nephropathy;
Ⅳ collagen;
N-acetyl-β-D-glucosaminidase;
cystatin C;
β2-microglobublin
- From:
Clinical Medicine of China
2011;27(1):65-68
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the efficacy of urinary type Ⅳ collagen( Ⅳ C), N-acetyl-β-D-glucosaminidase( NAG ), serum cystatin C ( CysC ), β2 microglobulin ( β2-MG ) in early diagnosis of diabetic nephropathy(DN) ,and to develop a multiple regression equation using above mentioned indices. Methods One hundred and eight cases of DM patients were enrolled in the study. All those DM patients were divided into two groups according to 24 hr urinary albumin excretion(UAE): non-DN group( UAE ＜30 mg/24 h)and DN group (UAE ≥30 mg/24 h). Receiver operating characteristics (ROC)curve was developed using urinary IVC, NAG,serum CysC and β2-MG,and the efficiency of the four indices for early diagnosis of diabetic nephropathy were assessed by area under the curve ROC (AUCROC). Furthermore, the regression equation of four indicators was developed. All statistical analyses were performed using SPSS 13.0. Results The levels of urine Ⅳ C, NAG,CysC,β2-MG,were(3.91±1.93)ng/ml, ( 12.20 ±3.46)U/L, ( 1.18 ±0.41 )mg/L , (2. 50 ±0. 74)mg/ml in the non-DN group, respectively; and ( 14.14 ± 11.17 ) ng/ml, ( 23.12 ± 13.57 ) U/L, ( 2.69 ± 1.69 ) mg/L and(5.21 ± 2.78)mg/ml in the DN group, respectively. There were significant differences in the comparison of the four indicators between the two groups ( Ps ＜ 0.01 ). AUCROC of Ⅳ C, NAG, CysC and β2-MG were 0. 747,0.732,0.764 and 0.823 respectively;which meant the diagnostic efficacy for DN decended from β2-MG, CysC,Ⅳ C, to NAG in order. All these indices showed significant efficiency in assisting diagnosis of early DN ( Ps ＜0.01 ). The regression equation of UAE and the four indices was: UAE = - 242.624 + 6.362IVC + 8.662NAG + 64. 622CysC + 29.488β2-MG, and the equation had statisticl significance( P ＜ 0.O1 ). Conclusion Urine Ⅳ C, NAG,serum CysC, and β2-MG showed significant value in assisting diagosis of early DN, and could be sensitive indices for DN.
