Detection of hepatitis B virus DNA in sera from 18 alcoholic carriers of anti-HBc alone and response to a single dose of hepatitis B vaccine / Pesquisa de DNA do vírus da hepatite B no soro de 18 alcoolistas portadores de anti-HBc isolado e resposta a uma dose da vacina para hepatite B

ABSTRACT

To evaluate the possibility of occult hepatitis B virus (HBV) infection in alcoholics carriers of "anti-HBc alone", and to verify the behavior of this serological pattern after a single dose of hepatitis B vaccine, 18 alcoholics who had this serological profile were evaluated by the polymerase chain reaction method, and 17 of them were vaccined. All were negative for HBV DNA. Nine (52.9 percent) of those vaccined had anamnestic response, mainly those with positive anti-HBe (8/10; 80 percent). "Anti-HBc alone" was compatible with low levels of anti-HBs in half of the patients, and probably with false positive results for anti-HBc in the others.

RESUMO

Para avaliar a possibilidade de infecção oculta pelo vírus da hepatite B em alcoolistas com "anti-HBc isolado" e a resposta a uma dose da vacina para a hepatite B, 18 alcoolistas com este perfil sorológico foram avaliados pelo método de reação em cadeia da polimerase e 17 deles foram vacinados. Todos tiveram negativos os exames para o VHB DNA. Nove (52,9 por cento) dos vacinados tiveram resposta anamnéstica, principalmente aqueles com anti-HBe positivo (8/10; 80 por cento). "Anti-HBc isolado" foi compatível com baixos títulos de anti-HBs em metade dos pacientes, e provavelmente com resultado falso-positivo para o anti-HBc nos demais.