Data/hora: 09/06/2024 10:46:18

Provedor de dados: 	58	
País: 	Brazil	
Título: 	Genetic variability of Streptococcus mutans isolated from low-income families, as shown by RAPD markers	
Autores: 	Moreira,Mônica; Vicente,Vânia Aparecida; Glienke,Chirlei.	
Data: 	2007-12-01	
Ano: 	2007	
Palavras-chave: 	Streptococcus mutans; Genetic variability; RAPD.	
Resumo: 	The detection of Streptococcus mutans isolates with high genetic variability in different individuals indicates the occurrence of transmissibility. In this context, nine low-income families (40 individuals in total) with similar social conditions were assessed to identify the bioserotypes of S. mutans using both biochemical and RAPD markers and to establish the degree of similarity among the intra-familial isolates. The polymorphism analysis used the coefficient of Jaccard in both a Principal Coordinates Analysis (PCO) and in a UPGMA clustering method. A total of 157 isolates were obtained from salivary samples, using the morphology of colonies recovered using MSB agar as indicators. From those, 64 were characterized biochemically as S. mutans and 10 as S. sombrinus. Genetic variability among isolates based on RAPD markers was not consistent with their intra-familial distribution. In particular, some individuals might have experienced multiple infections given the high genetic variability among their isolates. The occurrence of 4 isolates with 100% genetic similarity is indicative of intra-familial transmission.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000400026	
Editor: 	Sociedade Brasileira de Microbiologia	
Relação: 	10.1590/S1517-83822007000400026	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Microbiology  v.38 n.4 2007	
Fonte: 	info:eu-repo/semantics/openAccess