Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
Retrovirology BioMed Central Open Access Poster presentation Phylogeny of HTLV-I isolates from groups with risk antecedents for human retrovirus infections in Argentina Maria Emilia Eirin*, Carolina Berini, María Angeles Pando, Maria Avila, Horacio Salomon and Mirna Biglione Address: National Centre Reference for AIDS, School of Medicine, Buenos Aires, Argentina * Corresponding author from 2006 International Meeting of The Institute of Human Virology Baltimore, USA. 17–21 November, 2006 Published: 21 December 2006 Retrovirology 2006, 3(Suppl 1):P17 doi:10.1186/1742-4690-3-S1-P17 <supplement> <title> <p>2006 International Meeting of The Institute of Human Virology</p> </title> <note>Meeting abstracts. A single PDF containing all abstracts in this Supplement is available <a href=" http://www.biomedcentral.com/content/files/pdf/1742-4690-3-S1-full.pdf ">here</a></note> <url>http://www.biomedcentral.com/content/pdf/1742-4690-3-S1-info.pdf</url></supplement> © 2006 Eirin et al; licensee BioMed Central Ltd. Background HTLV-I infection shows an ethnic-geographic restriction being naturally endemic among aborigines from the Northwest. At-risk populations are also infected with HTLV-I. Cosmopolitan subtype (a) including subgroups A, B and C has been described previously in our country. Materials and methods 35 HTLV-I samples were analyzed including 3 MSM, 6 FSW (1 from Peru and 3 from Salta), 13 BD (1 Japanese descendent), 5 HAM/TSP (3 from Peru) and 8 HIV positive individuals. The rest were from Buenos Aires (BA) city. LTR regions were amplified by n-PCR. Neighbor-joining and Parsimony trees were performed using Phylip package program. Results 32 samples were identified as the Cosmopolitan subtype a, subgroup A. One HAM/TSP aA sample from BA was more distantly related to the rest of the aA samples. Furthermore, 2 samples (1 Peruvian HAM/TSP and 1 Japanese BD from BA) clustered with the previously described Br4, Br9 (from Brazil) and B13.Peru. Conclusion The majority of the circulating HTLV-I strains in Argentina belonged to the subgroup A. The finding of these 2 samples, clustering separately from any other known HTLV-I subgroup, agrees with previous suggestions of a possible divergent subgroup within subtype a. Page 1 of 1 (page number not for citation purposes)