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Safety of and Immunological Response to a Recombinant Vaccinia Virus Vaccine Expressing HIV Envelope Glycoprotein pp.242-243
Published Date 1992/3/1
DOI https://doi.org/10.11477/mf.1543900986
  • Abstract

In a randomized phase I trial of a recombinant vaccinia virus vaccine expressing the gp 160 envelope gene of the human immunodeficiency virus (HIVAC-le) 35 healthy, HIV-seronegative males, 31 of whom hand a history of smallpox immunisation and 4 of whom were vaccinia naive, were vaccinated and then boosted 8 weeks later with HIVAC-le or standard NY strain vaccinia virus. The frequency, duration, and titre of virus isolation from the vaccination site and occurrence of local side-effects were similar between the two groups of vaccinees. Vaccinia-naive (vac-n) subjects shed virus fromthe vaccination site for longer and at a higher titre than did vaccinia-primed (vac-p) individuals (19 vs 7 days and 107 vs 105 pfu/ml, respectively). In-vitro T-cell proliferative responses to one or moreHIV antigen preparations developed in 13 of 16 vaccinia-primedsubjects inoculated with HIVAC-le. T-cell responses were, however,transient and in no subject did antibodies to HIV become detectable. The 2 vaccinia-naive subjects vaccinated with HIVAC-le showedstrong T-cell responses to homologous and heterologous strains ofwhole virus and to recombinat gp 160 protein that remained detectable for over a year : antibodies to HIV envelope also developed inboth.


Copyright © 1992, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1375 印刷版ISSN 0301-2611 医学書院

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