Laboratory Medicine ›› 2019, Vol. 34 ›› Issue (11): 1015-1020.DOI: 10.3969/j.issn.1673-8640.2019.11.013

• Orginal Article • Previous Articles     Next Articles

Performance evaluation and clinical application of 1,5-anhydrous sorbitol determination by enzymatic method

ZHOU Mi1, SHEN Ruojian1, WU Weiyun1, YAN Hongmei2, GUO Wei1, PAN Baishen1, WANG Beili1()   

  1. 1.Department of Clinical Laboratory,Zhongshan Hospital,Fudan University,Shanghai 200032,China
    2.Department of Endocrinology and Metabolism,Zhongshan Hospital,Fudan University,Shanghai 200032,China
  • Received:2018-09-10 Online:2019-11-30 Published:2019-12-05

Abstract:

Objective To evaluate the performance of 1,5-anhydrous sorbitol(1,5-AG) determination by enzymatic method,and to analyze its role in diabetes mellitus(DM) and acute myocardial infarction(AMI). Methods A total of 70 patients with DM(DM group),56 patients with AMI(non-DM group),78 patients with DM and AMI(DM+AMI group) and 120 healthy subjects were enrolled. The performance of 1,5-AG determination(correctness,precision,lower limit of detection,linear range and reference interval) by enzymatic method was verified. The determinations of 1,5-AG,aspartate aminotransferase(AST),alanine aminotransferase(ALT),gamma-glutamyltransferase(GGT),alkaline phosphatase(ALP),blood urea nitrogen(BUN),creatinine(Cr),uric acid(UA),total cholesterol(TC),triglyceride(TG),high-density lipoprotein cholesterol(HDL-C),low-density lipoprotein cholesterol(LDL-C),blood glucose(Glu),glycated albumin(GA),glycated hemoglobin A1c(HbA1c) and beta-hydroxybutyrate(β-HB) were performed. Pearson correlation analysis was used to evaluate the correlation between 1,5-AG and Glu,GA and HbA1c. Results By enzymatic method,the 1,5-AG calibrator had a relative bias of 4.05%,which was below the manufacturer's stated bias(<10.0%). The within-run coefficient of variation(CV) was 0.60%-3.43%,and the between-run CV was 1.02%-3.14%,which met the manufacturer's stated requirements(<5%). After repeating determination for 20 times,1,5-AG level was close to the manufacturer's stated detection limit(0.25 μmol/L) of the sample(0.28 μmol/L),and those of 20 times were all determined. The linear range was 24.5-147.5 μmol/L. Of the 120 healthy subjects,the 1,5-AG determination results of 115 cases were fell within the reference range(>85.29 μmol/L)declared by the manufacturer,and the reference interval was validated. 1,5-AG was negatively correlated with Glu,GA and HbA1cr =-0.342,-0.591 and -0.685,P<0.001). The levels of 1,5-AG,ALT,AST,Glu,GA,HbA1c,β-HB and HDL-C in DM group had statistical significance compared with those in non-DM group(P<0.01,P<0.001). There was statistical significance in the determinations of 1,5-AG,GA,HbA1c,AST and ALT between DM and DM+AMI groups(P<0.01,P<0.001). Conclusions 1,5-AG plays a role in the early diagnosis of DM,and it can be used as a diagnostic indicator for DM.

Key words: 1,5-Anhydrous sorbitol, Diabetes mellitus, Acute myocardial infarction

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