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| Content Provider | Scientific Electronic Library Online (SciELO) |
|---|---|
| Author | Wei, Xinhuan Yu, Haibin Zhao, Peng Xie, Li Li, Li Zhang, Jing |
| Abstract | Regucalcin is a soluble protein that is principally expressed in hepatocytes. Studies of regucalcin have mainly been conducted in animals due to a lack of commercially available kits. We aimed to develop an enzyme-linked immunosorbent assay (ELISA) to quantify serum regucalcin in patients with hepatitis B virus (HBV)-related disease. High-titer monoclonal antibodies and a polyclonal antibody to regucalcin were produced, a double-antibody sandwich ELISA method was established, and serum regucalcin was determined in 47 chronic hepatitis B (CHB) patients, 91 HBV-related acute-on-chronic liver failure (HBV-ACLF) patients, and 33 healthy controls. The ELISA demonstrated an appropriate linear range, and high levels of reproducibility, sensitivity, specificity, accuracy, and stability. The median serum regucalcin concentrations in HBV-ACLF and CHB patients were 5.46 and 3.76 ng/mL, respectively (P<0.01), which were much higher than in healthy controls (1.72 ng/mL, both P<0.01). For the differentiation of CHB patients and healthy controls, the area under curve (AUC) was 0.86 with a cut-off of 2.42 ng/mL, 85.7% sensitivity, and 78.8% specificity. In contrast, the AUC of alanine aminotransferase (ALT) was lower (AUC=0.80, P=0.01). To differentiate ACLF from CHB, the AUC was 0.72 with a cut-off of 4.26 ng/mL, 77.0% sensitivity, and 61.2% specificity while the AUC of ALT was 0.41 (P=0.07). Thus, we have developed an ELISA that is suitable for measuring serum regucalcin and have shown that serum regucalcin increased with the severity of liver injury due to HBV-related diseases, such that it appears to be more useful than ALT as a marker of liver injury. |
| Related Links | http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0100-879X2019001000605&lng=en&nrm=iso http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2019001000605&lng=en&nrm=iso |
| File Format | |
| ISSN | 01008790 |
| DOI | 10.1590/1414-431x20198845 |
| Journal | Brazilian Journal of Medical and Biological Research |
| Issue Number | 10 |
| Volume Number | 52 |
| Language | English |
| Publisher | Associação Brasileira de Divulgação Científica |
| Publisher Date | 2019-01-01 |
| Access Restriction | Open |
| Subject Keyword | Regucalcin Liver injury Chronic hepatitis B infection ELISA Liver failure |
| Content Type | Text |
| Resource Type | Article |
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