title: Delta-infection and suppression of hepatitis B virus replication in chronic HBsAg carriers.
abstract: The presence of hepatitis B virus DNA and anti-delta was examined in a longitudinal study of 24 patients known to be delta-infected during the course from acute to chronic hepatitis B virus infection. Fifteen patients (63%) were hepatitis B virus DNA positive in the first serum sample. Eleven of 14 patients, who cleared hepatitis B virus DNA, did so following or at the same time as onset of delta-infection. Duration of hepatitis B virus DNA positivity in these 11 patients was shorter than in 11 anti-delta-negative controls matched according to duration of preceding hepatitis B virus DNA positivity, but the difference was not statistically significant. Considering only patients positive for IgM anti-delta in the last serum sample (eight patients), a statistically significant shorter duration of hepatitis B virus DNA positivity was found in delta-infected patients than in the controls (p less than 0.02). The study indicates that the delta-agent may have the capacity to inhibit hepatitis B virus replication and that a chronic delta-infection may lead to a termination of the period of active viral replication.
mesh_terms: D000293:Adolescent; D000328:Adult; D000956:Antigens, Viral / Q000276:immunology; D002353:Carrier State / Q000276:immunology; D002908:Chronic Disease; D004279:DNA, Viral / Q000032:analysis; D005260:Female; D006514:Hepatitis B Surface Antigens / Q000276:immunology*; D006515:Hepatitis B virus / Q000502:physiology*; D003699:Hepatitis D / Q000382:microbiology*; D003698:Hepatitis Delta Virus / Q000276:immunology; D006801:Humans; D008297:Male; D008875:Middle Aged; D014779:Virus Replication
chemical_list: D000956:Antigens, Viral; D004279:DNA, Viral; D006514:Hepatitis B Surface Antigens