AIM: To investigate the frequency and timing of post-partum chronic hepatitis B virus(HBV) reactivation and identify its pre-partum predictors. METHODS: Forty-one hepatitis B e antigen(HBe Ag)-negative chronic HBV inf...AIM: To investigate the frequency and timing of post-partum chronic hepatitis B virus(HBV) reactivation and identify its pre-partum predictors. METHODS: Forty-one hepatitis B e antigen(HBe Ag)-negative chronic HBV infected pregnant women were prospectively evaluated between the 28 th and the 32 nd week of gestation. Subjects were re-evaluated at 3-mo intervals during the first post-partum year and every 6 mo during the following years. HBV DNA was determined using real-time reverse transcription polymerase chain reaction(Cobas Taq Man HBV Test) with a lower detection limit of 8 IU/m L. Post-partum reactivation(PPR) was defined as abnormal alanine aminotransaminase(ALT) levels and HBV DNA above 2000 IU/m L. RESULTS: Fourteen out of 41 women(34.1%) had prepartum HBV DNA levels > 2000 IU/m L, 18(43.9%) had levels < 2000 IU/m L and 9(21.9%) had undetectable levels. Fourteen women were lost to follow-up(failure to return). PPR occurred in 8 of the 27(29.6%) women evaluated, all within the first 6 mo after delivery(5 at month 3; 3 at month 6). Five of the 6(83.3%) women with pre-partum HBV DNA > 10000 IU/m L exhibited PPR compared with 3 of the 21(14.3%) women with HBV DNA < 10000 IU/m L(two with HBV DNA > 2000 and the third with HBV DNA of 1850IU/m L), P = 0.004. An HBV DNA level ≥ 10000 IU/m L independently predicted post-partum HBV infection reactivation(OR = 57.02, P = 0.033). Mean pre-partum ALT levels presented a non-significant increase in PPR cases(47.3 IU/L vs 22.2 IU/L, respectively, P = 0.094).CONCLUSION: In the present study, PPR occurred in approximately 30% of HBe Ag-negative pregnant women; all events were observed during the first semester after delivery. Pre-partum HBV DNA level > 10000 IU/m L predicted PPR.展开更多
文摘AIM: To investigate the frequency and timing of post-partum chronic hepatitis B virus(HBV) reactivation and identify its pre-partum predictors. METHODS: Forty-one hepatitis B e antigen(HBe Ag)-negative chronic HBV infected pregnant women were prospectively evaluated between the 28 th and the 32 nd week of gestation. Subjects were re-evaluated at 3-mo intervals during the first post-partum year and every 6 mo during the following years. HBV DNA was determined using real-time reverse transcription polymerase chain reaction(Cobas Taq Man HBV Test) with a lower detection limit of 8 IU/m L. Post-partum reactivation(PPR) was defined as abnormal alanine aminotransaminase(ALT) levels and HBV DNA above 2000 IU/m L. RESULTS: Fourteen out of 41 women(34.1%) had prepartum HBV DNA levels > 2000 IU/m L, 18(43.9%) had levels < 2000 IU/m L and 9(21.9%) had undetectable levels. Fourteen women were lost to follow-up(failure to return). PPR occurred in 8 of the 27(29.6%) women evaluated, all within the first 6 mo after delivery(5 at month 3; 3 at month 6). Five of the 6(83.3%) women with pre-partum HBV DNA > 10000 IU/m L exhibited PPR compared with 3 of the 21(14.3%) women with HBV DNA < 10000 IU/m L(two with HBV DNA > 2000 and the third with HBV DNA of 1850IU/m L), P = 0.004. An HBV DNA level ≥ 10000 IU/m L independently predicted post-partum HBV infection reactivation(OR = 57.02, P = 0.033). Mean pre-partum ALT levels presented a non-significant increase in PPR cases(47.3 IU/L vs 22.2 IU/L, respectively, P = 0.094).CONCLUSION: In the present study, PPR occurred in approximately 30% of HBe Ag-negative pregnant women; all events were observed during the first semester after delivery. Pre-partum HBV DNA level > 10000 IU/m L predicted PPR.
