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http://hdl.handle.net/11154/3025
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Title: | HETEROGENEITY OF VP4 NEUTRALIZATION EPITOPES AMONG SEROTYPE P1A HUMAN ROTAVIRUS STRAINS |
Authors: | CONTRERAS, JF MENCHACA, GE PADILLANORIEGA, L TAMEZ, RS GREENBERG, HB López, S Arias, CF |
Issue Date: | 1995 |
Abstract: | We have used serotype-specific VP4 and VP7 neutralizing monoclonal antibodies (Nt-MAbs), as well as subgroup (SG)-specific MAbs, to characterize by enzyme immunoassay rotavirus strains isolated from diarrheic infants in the city of Monterrey, Mexico, from July 1993 to March 1994. Of a total of 465 children studied, 140 were rotavirus positive, including 3 patients infected with non-group A rotaviruses. The SG and VP7 (G) serotype specificities could be determined for 118 (84%) of the 140 rotavirus-positive stool specimens 4 rotavirus strains were serotype G1 and SGII 1 strain was serotype G2 and SGI+II 112 strains were serotype G3 and SGII 1 strain was serotype G3 and SGI and none of the strains was serotype G4. Fifty-eight specimens, representing the 13 different group A rotavirus electropherotypes detected, were chosen for VP4 (P) serotyping. Of these, 48 (83%) strains reacted with the P1A serotype-specific Nt-MAb 1A10. None of the strains reacted with the serotype P2-specific Nt-MAbs tested. Not all viruses that reacted with Nt-MAb 1A10 were recognized by Nt-MAbs 2A3 and 2G1, which also recognize P1A strains, indicating heterogeneity of neutralization epitopes among serotype P1A human rotaviruses. This heterogeneity could be relevant for the specificity of the VP4-mediated neutralizing antibody immune response and indicates the need for antigenic characterization, in addition to genomic typing, of the VP4 proteins of circulating human rotavirus field strains. |
URI: | http://hdl.handle.net/11154/3025 |
ISSN: | 1071-412X |
Appears in Collections: | Ciencias
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