Multilocus analysis indicates that Trypanosoma cruzi I genetic substructure associated with sylvatic and domestic cycles is not an attribute conserved throughout Colombia.
Trypanosoma cruzi, the causative agent of Chagas disease, has been classified into six discrete typing units (DTUs) named TcI to TcVI. Furthermore, subcontinental scale studies based on analysis of the splice leader intergenic region (SL-IR) of the mini-exon gene have subdivided TcI in five genetic groups (Ia-Ie) related to the domestic and non-domestic cycles. However, a current review of this marker among all the sequences deposited in the GenBank demonstrates no correlation between the genetic structure and the eco-epidemiological features of parasite transmission. In this study, we performed a multilocus analysis of TcI isolates from a diverse array of hosts and vectors in a wide eco-geographical area of Colombia. Sequences from SL-IR and mitochondrial cyt b genes as well as PCR-RFLP profiles for four nuclear genes were analyzed. Multilocus analysis indicates that genetic structuration associated with sylvatic and domestic cycles in Colombia is not an attribute conserved across the entire eco-geography where TcI can be found.
['Gómez-Palacio|Andrés|A|', 'Lopera|Juan|J|', 'Rojas|Winston|W|', 'Bedoya|Gabriel|G|', 'Cantillo-Barraza|Omar|O|', 'Marín-Suarez|Johana|J|', 'Triana-Chávez|Omar|O|', 'Mejía-Jaramillo|Ana|A|']
D014355:Chagas Disease D003105:Colombia D045303:Cytochromes b D021901:DNA, Intergenic D016054:DNA, Protozoan D014644:Genetic Variation D006239:Haplotypes D058885:Multilocus Sequence Typing D010802:Phylogeny D020641:Polymorphism, Single Nucleotide D017422:Sequence Analysis, DNA D014349:Trypanosoma cruzi
multilocus analysis Trypanosoma cruzi Colombia genetic population