Characterization of clinical isolates of Streptococcus agalactiae by random amplified polymorphic DNA using degenerate oligonucleotides
Medicina (B.Aires)
;
55(6): 681-4, 1995. tab, ilus
Article
Dans Anglais
| LILACS
| ID: lil-163814
RESUMO
Epidemioiogicai studies of Streptococcus agalactiae strains have been limited by the lack of sensitive and discriminatory methods for comparing clinical isolates. Serotyping, albeit a widely used methodology, has been shown to possess low capability to distinguish between epidemiologically related and unrelated isolates. We have employed here a random amplification of polymorphic DNA (RAPD) assay, using degenerate oligonucleotides as primers, to characterize S. agalactiae isolates from related or unrelated clinical samples. Epidemioiogically-related isolates (mother-infant pairs) showed identical profiles by this methodology. On the contrary, 12 epidemioiogically-unrelated isolates (ciassified into 5 different serotypes) resulted in ll distinct RAPD patterns. This suggests that the proposed modified RAPD assay provides a highly discriminatory tool for the analysis of genomic diversity among isolates from pathogenic organisms.
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Indice:
LILAS (Amériques)
Sujet Principal:
Streptococcus agalactiae
/
Technique RAPD
Type d'étude:
Essai clinique contrôlé
Limites du sujet:
Femelle
/
Humains
/
Nouveau-né
/
Grossesse
langue:
Anglais
Texte intégral:
Medicina (B.Aires)
Thème du journal:
Médicament
Année:
1995
Type:
Article
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