| Autor: |
Sinitsyna OA; Vaccine Production Department, Moscow, USSR., Khudaverdyan OE, Steinberg LL, Nagieva FG, Lotte VD, Dorofeeva LV, Rozina EE, Boriskin YuS |
| Jazyk: |
angličtina |
| Zdroj: |
Research in virology [Res Virol] 1990 Sep-Oct; Vol. 141 (5), pp. 517-31. |
| DOI: |
10.1016/0923-2516(90)90084-v |
| Abstrakt: |
Measles vaccine viruses Leningrad-16 (L-16) and Moscow-5 (M-5, an L-16-derived clonal variant), at passage levels used for vaccination and after ten further low-multiplicity passages on quail embryo (QE) cells, were compared for (1) immunogenicity, (2) histopathological lesions induced in vivo and (3) surface protein expression within infected cells and on the virion surface. At the 10th passage, viruses evoked a poorer neutralizing antibody response in guinea pigs, induced an earlier appearance of more pronounced pathological lesions and replicated faster in Vero cells than the original viruses. H protein expression increased 1.8-2.3-fold after 10 passages of the L-16 variant, but remained virtually unaltered for the M-5 variant. F protein expression of both 10th-passage variants was 0.5-0.8 that of the original virus variants. A similar two-fold decrease in F protein expression was noted after a single virus passage in guinea pigs. The data implicate the loss of F protein as a cause of reduced immunogenicity of further attenuated measles vaccines. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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