Data/hora: 03/06/2024 05:12:05

Provedor de dados: 	74	
País: 	Brazil	
Título: 	Analysis of the CCR5 gene coding region diversity in five South American populations reveals two new non-synonymous alleles in Amerindians and high CCR5*D32 frequency in Euro-Brazilians	
Autores: 	Boldt,Angelica B.W.; Culpi,Lodércio; Tsuneto,Luiza T.; Souza,Ilíada R.; Kun,Jürgen F.J.; Petzl-Erler,Maria Luiza.	
Data: 	2009-01-01	
Ano: 	2009	
Palavras-chave: 	CCR5; Brazilian; Amerindian; HIV; Polymorphism.	
Resumo: 	The CC chemokine receptor 5 (CCR5) molecule is an important co-receptor for HIV. The effect of the CCR5*D32 allele in susceptibility to HIV infection and AIDS disease is well known. Other alleles than CCR5*D32 have not been analysed before, neither in Amerindians nor in the majority of the populations all over the world. We investigated the distribution of the CCR5 coding region alleles in South Brazil and noticed a high CCR5*D32 frequency in the Euro-Brazilian population of the Paraná State (9.3%), which is the highest thus far reported for Latin America. The D32 frequency is even higher among the Euro-Brazilian Mennonites (14.2%). This allele is uncommon in Afro-Brazilians (2.0%), rare in the Guarani Amerindians (0.4%) and absent in the Kaingang Amerindians and the Oriental-Brazilians. R223Q is common in the Oriental-Brazilians (7.7%) and R60S in the Afro-Brazilians (5.0%). A29S and L55Q present an impaired response to b-chemokines and occurred in Afro- and Euro-Brazilians with cumulative frequencies of 4.4% and 2.7%, respectively. Two new non-synonymous alleles were found in Amerindians: C323F (g.3729G &gt; T) in Guarani (1.4%) and Y68C (g.2964A &gt; G) in Kaingang (10.3%). The functional characteristics of these alleles should be defined and considered in epidemiological investigations about HIV-1 infection and AIDS incidence in Amerindian populations.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000100002	
Editor: 	Sociedade Brasileira de Genética	
Relação: 	10.1590/S1415-47572009005000011	
Formato: 	text/html	
Fonte: 	Genetics and Molecular Biology  v.32 n.1 2009	
Fonte: 	info:eu-repo/semantics/openAccess