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  • Title: Direct identification of non-polio enteroviruses in residual paralysis cases by analysis of VP1 sequences.
    Author: Rahimi P, Tabatabaie H, Gouya MM, Mahmudi M, Musavi T, Rad KS, Azad TM, Nategh R.
    Journal: J Clin Virol; 2009 Jun; 45(2):139-41. PubMed ID: 19394264.
    Abstract:
    BACKGROUND: The 66 serotypes of human enteroviruses (EVs) are classified into four species A-D, based on phylogenetic relationships in multiple genome regions. Partial VP(1) amplification and sequence analysis are reliable methods for identifying non-polio enterovirus serotypes, especially in negative cell culture specimens from patients with residual paralysis. OBJECTIVES: In Iran during the years 2000-2002, there were 29 residual paralysis cases with negative cell (RD, HEp(2) and L(20)B) culture results. STUDY DESIGN: The genomic RNA was extracted from stool specimens from cases of residual paralysis and detected by amplification of the 5'-nontranslated region using RT-PCR with Pan-EV primers. Partial VP(1) amplification by semi-nested RT-PCR (snRT-PCR) and sequence analysis were done. RESULTS: Specimens from the 29 culture-negative cases contained echoviruses of six different serotypes. CONCLUSIONS: The global eradication of wild polioviruses is near and study of non-polio enteroviruses, which can cause poliomyelitis, is increasingly important to understand their pathogenesis. The VP(1) sequences, derived from the snRT-PCR products, allowed rapid molecular analysis of these non-polio strains.
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