Objective To analyze the relationship between systemic immune inflammatory index(SII)and the blocking ef-fect of tenofovir(TDF)on hepatitis B.Methods This was a retrospective,single-center study.From June 2019 to June 2023,148 pregnant women infected with hepatitis B virus(HBV)were recruited from our hospital.The HBV DNA load,HBeAg positive cases,baseline neutrophils,baseline SII,and the number of CD4+T cells of neutrophils at delivery were detected.The HBsAg and anti-HBs results of infants born after tenofovir treatment were compared,and the blocking effect of systemic in-flammatory immune index and tenofovir was judged.The failure of TDF to block MTCT was defined as HBsAg positive at 6 months old.Infant immune failure is defined as the level of anti-HBs antibody<10 IU/L at 6 months old.Results Among 148 infants evaluated at 6 months,6 infants were found to be HBsAg positive.Compared with the HBsAg negative infant group,the HBV DNA load,HBeAg positive cases,baseline neutrophils,baseline SII,neutrophils and SII at delivery in the HBsAg positive infant group increased significantly,and CD4+T cells decreased significantly at delivery.Both baseline SII and SII at delivery were positively correlated with HBV DNA load at delivery(r=0.320 and 0.201,both P<0.05),and the baseline SII was nega-tively correlated with baseline CD4+T cells(r=-0.183,P=0.026).Binary logistic regression analysis showed that baseline SII(OR=1.003,95%CI 1.000-1.007)was an independent influencing factor of HBV infection in infants(P=0.044).132 cases(88%)of 6-month-old infants had anti-HBs antibody titers≥10 IU/L.Compared with the successful infant immunization group,the baseline SII of the failed infant immunization group increased significantly.Conclusion The use of TDF in pregnant women infected with HBV can effectively block MTCT,and the increase of baseline SII level in pregnant women may be an important factor leading to the failure of TDF blocking.
关键词
全身免疫炎症指数/替诺福韦/乙型肝炎/母婴传播/孕妇
Key words
systemic immune inflammatory index/tenofovir/hepatitis b/mother to child transmission/pregnant woman