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回复 小心肝1 的帖子
"表面抗原这么高的情况下为什么会有这么高的抗体"
你的情况是非常罕见的.国家重点实验室,为诊断和治疗传染病,第一附属医院,医学院,浙江大学,杭州庆春路79310003
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研究,你可与他们联系.
J Clin Virol. 2011 Nov;52(3):198-203. Epub 2011 Aug 15.
Mutations in hepatitis B virus DNA from patients with coexisting HBsAg and anti-HBs.Chen Y, Qian F, Yuan Q, Li X, Wu W, Guo X, Li L.
SourceState Key Laboratory for Diagnosis and Treatment of Infectious Diseases, First Affiliated Hospital, School of Medicine, Zhejiang University, 79 Qingchun Road, Hangzhou 310003, China.
AbstractBACKGROUND: The serological markers with coexistence of hepatitis B surface antigen (HBsAg) and antibody to HBsAg (anti-HBs) of hepatitis B virus (HBV) infection were rare pattern. The virological significance, immune response and clinical outcome of these patients remain largely unknown.
OBJECTIVES: This research explores the relationship between this serological profile and HBV genome variants.
STUDY DESIGN: We studied 35 patients both carrying HBsAg and anti-HBs (group I), and 70 patients with HBsAg positive but anti-HBs negative (group II, served as control). The HBV genome sequences were obtained by direct sequencing of polymerase chain reaction (PCR) products.
RESULTS: The amino acid (aa) variation within major hydrophilic region (MHR), especially in the first loop (aa124-137) of "a" determinant in group I is significantly higher than those in group II. The aa variation of cytotoxic lymphocyte (CTL) epitope in HBsAg (aa87-aa95) in group I is also significantly higher than that in group II. Interestingly, the basal core promoter (BCP) double mutations (A1762T/G1764A) in group I is significantly higher than those in group II as well.
CONCLUSIONS: In patients with HBV infection, the coexistence of HBsAg and anti-HBs is associated with an increased aa variability in several key areas of HBV genome. The molecular characteristic of HBV in HBsAg and anti-HBs positive patients is distinct and worth further studies.
Copyright © 2011 Elsevier B.V. All rights reserved.
Eur J Clin Microbiol Infect Dis. 2011 Nov;30(11):1325-40. Epub 2011 Apr 12.
The underlying mechanisms for the "simultaneous HBsAg and anti-HBs serological profile".Pondé RA.
SourceLaboratório de Virologia Humana, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia-Goiás, Brasil, [email protected].
AbstractThe course of HBV infection is determined by the interplay between viral replication via HBV protein production and the host's immune response. Therefore, the diagnosis of infection in clinical practice is established by the serological detection of HBV protein products as well as antibodies produced by the host. Although the serological findings for assessing the clinical course of infection are already well established, the expression of viral proteins and the dynamics of antibody production may vary during the natural course of infection. This causes the HBV infection to be occasionally associated with the presence of unusual serologic profiles, which can lead to doubts in the interpretation of results and mistaken serological diagnosis. The simultaneous detection of HBsAg and anti-HBs in the blood stream comprises an atypical serological profile, somewhat incoherent, whose significance can be complicated to establish. Outlined in this article are some immunological and molecular mechanisms which could justify the existence of this profile in which there is a great laboratorial and clinical interest.
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