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  • Title: HBsAg level at time of liver transplantation determines HBsAg decrease and anti-HBs increase and affects HBV DNA decrease during early immunoglobulin administration.
    Author: Rosenau J, Kreutz T, Kujawa M, Bahr MJ, Rifai K, Hooman N, Finger A, Michel G, Nashan B, Kuse ER, Klempnauer J, Tillmann HL, Manns MP.
    Journal: J Hepatol; 2007 Apr; 46(4):635-44. PubMed ID: 17316869.
    Abstract:
    BACKGROUND/AIMS: Administration of hepatitis B immunoglobulin (HBIG) initially after liver transplantation of hepatitis B patients is considered important to prevent reinfection reliably. However, dosing schedules differ considerably between centers. We measured HBsAg, anti-HBs and HBV DNA kinetics to create a rational basis for dosing schemes. METHODS: Thirteen patients (group A) received 10,000 IU HBIG in the anhepatic phase followed by 10,000 IU daily until HBsAg became negative, whereas five patients (group B) received 20,000 IU followed by 5000 IU every 30 min. RESULTS: HBsAg levels at time of transplantation ranged from 0.12 to 12,990 IU/ml. Correlations between initial HBsAg and HBIG required to decrease HBsAg below 1 IU/ml were high in groups A and B (r=0.97, p<0.001; r=1.00, p<0.001), as were correlations between initial HBsAg and HBIG required to raise anti-HBs above 1000 IU/l (r=0.94, p<0.001; r=1.00, p<0.001). In 11 HBV DNA-positive patients, DNA levels became negative in seven, and dropped by 2.5 log10 (mean) in the other four patients during immunoglobulin administration. CONCLUSIONS: In conclusion, required HBIG doses to decrease HBsAg and raise anti-HBs are determined by HBsAg levels at time of transplantation, not by HBV DNA levels. Shortened HBIG dosing intervals accelerate HBsAg decrease and anti-HBs increase. HBV DNA decreases rapidly during HBIG administration in most patients.
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