Genetic diversity of HLA system in two populations from Colima, Mexico: Colima city and rural Colima
HUMAN IMMUNOLOGY
Authors: Barquera, Rodrigo; Iraiz Hernandez-Zaragoza, Diana; Paulina Arellano-Prado, Francia; Gone-Vazquez, Isis; Clayton, Stephen; Arrieta-Bolanos, Esteban; Escobedo-Ruiz, Araceli; Eduardo Garcia-Arias, Victor; Bravo-Acevedo, Alicia; Estefania Rodriguez-Lopez, Marla; de Jesus Sanchez-Fernandez, Maria Guadalupe; Sandoval-Sandoval, Mario J.; Gomez-Navarro, Benjamin; Zuniga, Joaquin; Yunis, Edmond J.; Bekker-Mendez, Carolina; Granados, Julio
Abstract
We studied HLA class I (HLA-A, -B) and class II (HLA-DRB1, -DQB1) alleles by PCR-SSP based typing in 104 Mexicans from the state of Colima living in the city of Colima (N = 61) and rural communities (N = 43), to obtain information regarding allelic and haplotypic frequencies. We find that the most frequent haplotypes in the state of Colima include eight Native American, two European and one African haplotype. Admixture estimates revealed that the main genetic components in the state are Native American (52.74 +/- 3.88% by ML; 48.10% of Native American haplotypes) and European (37.52 +/- 8.94% by ML; 26.66% of European haplotypes), and a relatively high African genetic component (9.74 +/- 8.40% by ML; 11.91% of African haplotypes).
Genetic diversity of HLA system in three populations from Zacatecas, Mexico: Zacatecas city, Fresnillo and rural Zacatecas
HUMAN IMMUNOLOGY
Authors: Iraiz Hernandez-Zaragoza, Diana; Delgado-Aguirre, Hector; Barquera, Rodrigo; Adalid-Sainz, Carmen; Clayton, Stephen; Lona-Sanchez, Abraham; Gonzalez-Medina, Liliana; Pacheco-Ubaldo, Hanna; Bravo-Acevedo, Alicia; Escareno-Montiel, Nestor; Moran-Martinez, Javier; del Rocio Gonzalez-Martinez, Marisela; Jaramillo-Rodriguez, Yolanda; Juarez-de la Cruz, Federico; Zuniga, Joaquin; Yunis, Edmond; Bekker-Mendez, Carolina; Granados, Julio
Abstract
We studied HLA class I (HLA-A, -B) and class II (HLA-DRB1, -DQB1) alleles by PCR-SSP based typing in 453 Mexicans from the state of Zacatecas living in Zacatecas city (N = 84), Fresnillo (N = 103) and rural communities (N = 266) to obtain information regarding allelic and haplotypic frequencies and their linkage disequilibrium. We find that the most frequent haplotypes for the state of Zacatecas include seven Native American most probable ancestry (A*02 similar to B*39 similar to DRB1*04 similar to DQB1*03:02; A*02 similar to B*35 similar to DRB1*08 similar to DQB1*04; A*24 similar to B*39 similar to DRB1*14 similar to DQB1*03:01; A*02 similar to B*35 similar to DRB1*04 similar to DQB1*03:02; A*24 similar to B*35 similar to DRB1*04 similar to DQB1*03:02; A*68 similar to B*35 similar to DRB1*04 similar to DQB1*03:02 and A*24 similar to B*35 similar to DRB1*08 similar to DQB1*04) and two European MPA haplotypes (HLA similar to A*01 similar to B*08 similar to DRB1*03:01 similar to DQB1*02 and A*29 similar to B*44 similar to DRB1*07 similar to DQB1*02). Admixture estimates revealed that the main genetic components in the state of Zacatecas are European (47.61 +/- 1.85%) and Native American (44.74 +/- 1.12%), while the African genetic component was less apparent (7.65 +/- 1.12%). Our findings provide a starting point for the study of population immunogenetics of urban and rural populations from the state of Zacatecas and add to the growing knowledge on the population genetics of Northern Mexico.