Abstract:Objective To investigate the diagnostic value of maternal serum integrin-metalloproteinase 12-S (ADAM12-S) and total bile acid (TBA) levels in intrahepatic cholestasis (ICP) during pregnancy.Methods From January 2017 to January 2019, 194 patients with ICP (observation group) and 200 normal pregnant women (control group) treated in our department of obstetrics and gynecology were selected. Detection of serum ADAM12-S, TBA, alanine aminotransferase (ALT), and aspartate aminotransferase (AST) in two groups, observation of differences between groups, and ROC analysis of the value of ADAM12-S and TBA combined with ADAM12-S + TBA in the diagnosis of ICP were performed.Results The serum levels of ADAM12-S in the observation group were lower than those in the control group (P < 0.05), and TBA, ALT, and AST were higher than those in the control group (P <0.05). The level of serum ADAM12-S in the severe group was significantly higher than that in the mild-to-moderate group, and the difference was statistically significant (P < 0.05). The serum ADAM12-S level decreased with the severity of ICP (P < 0.05). The levels of TBA, ALT, and AST of patients in the severe group were significantly higher than those in the mild to moderate group, and the difference was statistically significant (P < 0.05). TBA, ALT, and AST increased with the severity of ICP (P < 0.05). ADAM12-S level is negatively correlated with TBA level (r = -0.351, P < 0.05), ALT level (r = -0.309, P < 0.05), AST level (r = -0.419, P < 0.05)。ROC analysis results showed that the area under the curve (AUC) of ADAM12-S, TBA, combined ADAM12-S + TBA diagnostic ICP was 0.761, 0.830, 0.879.Conclusion Serum ADAM12-S levels decrease and TBA levels increase in patients with ICP. ADAM12-S and TBA levels are closely related to ICP disease and have high value for ICP diagnosis.