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Rodríguez-Gutiérrez PG, Hernández-Flores TDJ, Zepeda-Olmos PM, Reyes-Rodríguez CD, Robles-Espinoza K, Solís-Gómez U, González-García JR, Magaña-Torres MT. High Prevalence of Familial Hypercholesterolemia Due to the Founder Effect of the LDLR c.2271del Variant in Communities of Oaxaca, Mexico. Arch Med Res 2024; 55:102971. [PMID: 38513336 DOI: 10.1016/j.arcmed.2024.102971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 01/31/2024] [Accepted: 02/13/2024] [Indexed: 03/23/2024]
Abstract
INTRODUCTION In Mexico, familial hypercholesterolemia (FH) is underdiagnosed, but population screening in small communities where at least one homozygous patient has already been detected results in a useful and inexpensive approach to reduce this problem. Considering that we previously reported nine homozygous cases from the state of Oaxaca, we decided to perform a population screening to identify patients with FH and to describe both their biochemical and genetic characteristics. METHODS LDL cholesterol (LDLc) was quantified in 2,093 individuals from 11 communities in Oaxaca; either adults with LDLc levels ≥170 mg/dL or children with LDLc ≥130 mg/dL were classified as suggestive of FH and therefore included in the genetic study. LDLR and APOB (547bp fragment of exon 26) genes were screened by sequencing and MLPA analysis. RESULTS Two hundred and five individuals had suggestive FH, with a mean LDLc of 223 ± 54 mg/dL (range: 131-383 mg/dL). Two pathogenic variants in the LDLR gene were detected in 149 individuals: c.-139_-130del (n = 1) and c.2271del (n = 148). All patients had a heterozygous genotype. With the cascade screening of their relatives (n = 177), 15 heterozygous individuals for the c.2271del variant were identified, presenting a mean LDLc of 133 ± 35 mg/dL (range: 60-168 mg/dL). CONCLUSIONS The FH frequency in this study was 7.8% (164/2093), the highest reported worldwide. A founder effect combined with inbreeding could be responsible for the high percentage of patients with the LDLR c.2271del variant (99.4%), which allowed us to detect both significant biochemical heterogeneity and incomplete penetrance; hence, we assumed the presence of phenotype-modifying variants.
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Affiliation(s)
- Perla Graciela Rodríguez-Gutiérrez
- Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México; División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - Teresita de Jesús Hernández-Flores
- Departamento de Disciplinas Filosófico, Metodológicas e Instrumentales. Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - Paola Montserrat Zepeda-Olmos
- Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México; División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - Christian Daniel Reyes-Rodríguez
- Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México; División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - Kiabeth Robles-Espinoza
- Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México; División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - Ulises Solís-Gómez
- Hospital Regional, Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado, Tepic Aquiles Calles Ramírez, Tepic, Nayarit, México
| | - Juan Ramón González-García
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - María Teresa Magaña-Torres
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México.
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González-Arreola RM, García-Romero A, Magaña-Torres MT, González-García JR. A novel approach for direct detection of the IGH::CRLF2 gene fusion by fluorescent in situ hybridization. Mol Cytogenet 2023; 16:19. [PMID: 37574565 PMCID: PMC10423412 DOI: 10.1186/s13039-023-00652-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 07/25/2023] [Indexed: 08/15/2023] Open
Abstract
BACKGROUND High expression of the Cytokine Receptor-Like Factor 2 (CRLF2) gene has been observed in patients with acute lymphoblastic leukemia BCR-ABL1-like subtype. Currently, there is no commercial system available for the direct detection of the IGH::CRLF2 fusion by fluorescent in situ hybridization (FISH), as there are for many other leukemia-related gene fusions. In an effort to verify the IGH::CRLF2 fusion, some researchers prepare home-grown FISH probes from bacterial artificial chromosome clones flanking the IGH and CRLF2 genes, which is the best alternative to confirm the fusion, however difficult to reproduce in most cytogenetic laboratories. RESULTS For the direct observation of the IGH::CRLF2 gene fusion we designed a methodological approach requiring the two commercially available IGH and CRLF2 break-apart probes. CONCLUSIONS Our methodological approach allows direct visualization of the IGH::CRLF2 gene fusion and has the potential to be used for identification of other gene fusions.
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Affiliation(s)
- Rosa María González-Arreola
- Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco Mexico
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, CIBO-IMSS, Sierra Mojada #800, Colonia Independencia, CP 44340 Guadalajara, Jalisco Mexico
| | - Adriana García-Romero
- Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco Mexico
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, CIBO-IMSS, Sierra Mojada #800, Colonia Independencia, CP 44340 Guadalajara, Jalisco Mexico
| | - María Teresa Magaña-Torres
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, CIBO-IMSS, Sierra Mojada #800, Colonia Independencia, CP 44340 Guadalajara, Jalisco Mexico
| | - Juan Ramón González-García
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, CIBO-IMSS, Sierra Mojada #800, Colonia Independencia, CP 44340 Guadalajara, Jalisco Mexico
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3
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García-Romero A, González-Arreola RM, Borjas-Gutiérrez C, Magaña-Torres MT, González-García JR. Biased Clonal Evolution in Acute Promyelocytic Leukemia through Imbalances Affecting the der(17) but Not the der(15) Chromosome: Report of Two Cases. Cytogenet Genome Res 2023; 162:306-311. [PMID: 36724749 DOI: 10.1159/000527370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 10/04/2022] [Indexed: 02/03/2023] Open
Abstract
Acute promyelocytic leukemia (APL) is characterized by the chromosomal translocation t(15;17)(q24;q21), raising two hybrid genes: PML::RARA and RARA::PML. There is a biased clonal evolution in APL since imbalances affecting the der(15) chromosome (the one that carries the transforming PML::RARA gene) have never been reported; instead, imbalances of the der(17), mainly in form of an ider(17)(q10), have been repeatedly documented. We here present two cases with APL who acquired an ider(17)(q10) as a secondary chromosomal change. The presence of the ider(17)(q10) implies several genomic consequences with potential to fuel tumor progression: (1) a duplication of the hybrid gene RARA::PML; (2) a cumulative haploinsufficiency for tumor suppressor genes located in the 17p arm; and (3) a cumulative triplosensitivity of genes located in 17q10→RARA::PML→15qter. Both our patients were treated following the PETHEMA LPA 2012 protocol with ATRA plus idarubicin and they have had a long event-free survival.
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Affiliation(s)
- Adriana García-Romero
- Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico.,División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Mexico
| | - Rosa María González-Arreola
- Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico.,División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Mexico
| | - César Borjas-Gutiérrez
- Servicio de Hematología, UMAE Hospital de Especialidades, Centro Médico Nacional de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Mexico
| | - María Teresa Magaña-Torres
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Mexico
| | - Juan Ramón González-García
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Mexico
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Castro-Amaya AM, Fernández-Avila L, Barrón-Gallardo CA, Moreno-Rios CE, Guevara-Hernández SN, Magaña-Torres MT, Pelayo-Aguirre CJ, Jave-Suárez LF, Aguilar-Lemarroy A. E6/E7 from Beta-2-HPVs 122, 38b, and 107 possess transforming properties in a fibroblast model in vitro. Exp Cell Res 2022; 414:113088. [PMID: 35276208 DOI: 10.1016/j.yexcr.2022.113088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 02/11/2022] [Accepted: 02/28/2022] [Indexed: 12/24/2022]
Abstract
Beta-2 Human papillomaviruses 38b, 107, and 122 have been frequently found in cervical cancer samples in western Mexico. Because their E6/E7 genes functions are not fully elucidated, we deepen into their transformation capabilities. To achieve this goal, primary human fibroblasts (FB) were transduced with E6/E7 genotype-specific viral particles. Additionally, E6/E7 from HPVs 16 and 18 were included as controls. All E6/E7-cell models increased their lifespan; however, it is important to highlight that FB-E6/E7-122 showed growth as accelerated as FB-E6/E7-16 and 18. Furthermore, both FB-E6/E7-38b and 122 exhibited abilities to migrate, and FB-E6/E7-122 presented high invasive capacity. On the other hand, ΔNp73 expression was found in all cell models, except for FB-pLVX (empty-vector). Finally, RNAseq found differentially expressed genes enriched in signaling pathways related to cell cycle, epithelial-mesenchymal transition, and cancer, among others. This study shows for the first time, the great transformative potential that genotypes of the Beta-2 also possess, especially HPV122. These Beta-2 HPVs can modulate some of the genes that are well known to be regulated by Alpha-HPVs, however, they also possess alternative strategies to modulate diverse signaling pathways. These data support the idea that Beta-2 HPVs should play an important role in co-infections with Alpha-HPV during carcinogenesis.
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Affiliation(s)
- Aribert Maryosly Castro-Amaya
- División de Inmunología, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico; Programa de Doctorado en Ciencias Biomédicas, Centro Universitario de Ciencias de la Salud (CUCS), Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - Leonardo Fernández-Avila
- División de Inmunología, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico; Programa de Doctorado en Ciencias Biomédicas, Centro Universitario de Ciencias de la Salud (CUCS), Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - Carlos Alfredo Barrón-Gallardo
- División de Inmunología, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico; Programa de Doctorado en Ciencias Biomédicas, Centro Universitario de Ciencias de la Salud (CUCS), Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - Carlos Eliu Moreno-Rios
- División de Inmunología, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico
| | - Sarah Naomi Guevara-Hernández
- División de Inmunología, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico
| | - María Teresa Magaña-Torres
- División de Genética, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico
| | - Clarisa Jazmín Pelayo-Aguirre
- División de Inmunología, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico
| | - Luis Felipe Jave-Suárez
- División de Inmunología, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico; Programa de Doctorado en Ciencias Biomédicas, Centro Universitario de Ciencias de la Salud (CUCS), Universidad de Guadalajara, Guadalajara, Jalisco, Mexico.
| | - Adriana Aguilar-Lemarroy
- División de Inmunología, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico; Programa de Doctorado en Ciencias Biomédicas, Centro Universitario de Ciencias de la Salud (CUCS), Universidad de Guadalajara, Guadalajara, Jalisco, Mexico.
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Gallegos-Arreola MP, García Verdín PM, Magaña-Torres MT, Figuera LE, Zúñiga-González GM, Rosales-Reynoso MA, Gómez-Meda BC, Puebla-Pérez AM. Association between rs61764370, rs9266, and rs140080026 polymorphisms of the KRAS gene and breast cancer risk in a Mexican population. Eur Rev Med Pharmacol Sci 2021; 25:6454-6464. [PMID: 34787849 DOI: 10.26355/eurrev_202111_27088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Polymorphisms of the KRAS gene have been shown to be associated with cancer. However, their association with breast cancer (BC) has been inconsistent. The purpose of this study was to determine the frequency with which the rs61764370, rs9266, and rs140080026 polymorphisms of the KRAS gene are associated with BC in patients of the Mexican population. PATIENTS AND METHODS The rs61764370 A>C or T>G and rs140080026 A>G polymorphisms were determined by Polymerase Chain Reaction (PCR), and the rs9266 A>G polymorphism was determined by DNA sequencing of healthy Mexican subjects and BC patients. RESULTS We observed that 78% of BC patients are overweight and/or obese, 57% have metastatic lymph nodes, 64% have luminal A/B cancer subtypes, and 61% have stage III-IV cancer. The rs61764370 polymorphism was associated with BC susceptibility when the BC patients and the control group were compared for the AC genotype (p = 0.020), AC vs. AA genotypes (heterozygous model: p = 0.016), AC/CC genotype (dominant model: p = 0.002), and the C allele (p = 0.007). The AC/CC genotype (p = 0.018; rs61764370) and AG/GG genotype (p = 0.005; rs9266) were associated with age in BC patients ≥50 years old. The AC/CC (rs61764370) and AG/GG (rs9266) genotypes were classified by molecular subtype, TNM stage, miscarriage, lymph node metastasis, ductal type, and Ki-67. These classifications were also associated with BC patients, indicating that these factors may significantly contribute to BC risk. The AAA (OR 0.65, 95% CI 0.43-0.98, p = 0.039) and CAA (OR 3.25, 95% CI 1.13-9.36, p = 0.021) haplotypes were also associated with BC susceptibility. In addition, 94 polymorphisms were identified on the 3'UTR of the KRAS gene GRCh 38/hg3 (25,209,490-25,209,122) in BC (n = 112) and control (n = 113) samples. However, 92 of these polymorphisms have only expressed the major allele (wild-type allele). CONCLUSIONS The rs61764370 polymorphism in the KRAS gene was associated with BC susceptibility in the Mexican population. The dominant model of the rs61764370 and rs9266 polymorphisms (classified by molecular subtype, miscarriage, TNM stage, lymph node metastasis, and Ki-67) could significantly contribute to BC risk in patients ≥50 years. The CAA haplotype could significantly contribute to BC risk in the Mexican population analyzed.
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Affiliation(s)
- M P Gallegos-Arreola
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México.
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Rizo-de la Torre LDC, Rentería-López VM, Sánchez-López JY, Magaña-Torres MT, Ibarra-Cortés B, Perea-Díaz FJ. Molecular and Hematological Analysis of Alpha- and Beta-Thalassemia in a Cohort of Mexican Patients. Genet Test Mol Biomarkers 2021; 25:247-252. [PMID: 33734896 DOI: 10.1089/gtmb.2020.0276] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Introduction: Alpha- and beta-thalassemia are caused by reduced or absent synthesis of hemoglobin (Hb) subunits α and/or β. HBA2, HBA1, and HBB mutations are the main cause of thalassemias. The aim of this article is to analyze molecular and hematological features of α- and β-thal in a cohort of Mexican patients. Methods: One hundred forty-one thalassemia patients were studied. Peripheral blood was collected for blood cell count, electrophoresis, Hb quantification, and molecular testing. Molecular screening was performed by Gap-PCR, ARMS-PCR, Sanger sequencing, and MLPA. Results: Fifty-four patients had α-thal, 75 β-thal, and 12 patients were complex cases, we observed 13 α- and 18 β-thal alleles in 43 genotypes, -α3.7/αα and βCd39C>T/β were the most frequent. Four α-thal deletions (-Mex4 included HBA2 and HBA1, whereas (αα)Mex5, Mex6 and Mex7 involved MCS-R), a hereditary persistence of fetal hemoglobin-2 like (HPFH-2 like) deletion and six alleles not previously reported in Mexicans (α-59C>Tα, -α4.2, αPlasenciaα, β-32C>T, βInitCdA>C and βFSCd71/72+A) were identified. Conclusion: The observed alleles denote the high heterogeneity and multiple origin admixture of Mexican population. Hematological data are consistent with genotypes, variability in simple carriers, from asymptomatic forms to mild or moderate anemia, was ascertained. We emphasize the importance to consider hematological parameters to establish adequate molecular screening strategies.
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Affiliation(s)
- Lourdes Del Carmen Rizo-de la Torre
- División de Medicina Molecular, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - Víctor Manuel Rentería-López
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - Josefina Yoaly Sánchez-López
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - María Teresa Magaña-Torres
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - Bertha Ibarra-Cortés
- Instituto de Genética Humana "Dr Enrique Corona Rivera," Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - Francisco Javier Perea-Díaz
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
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Colima-Fausto AG, Sánchez-Corona J, Ramírez-López G, García-Zapien AG, Magaña-Torres MT. Association of the -629C>A (rs1800775) CETP Polymorphism with the Development of Essential Hypertension in Mexican Population. Genet Test Mol Biomarkers 2020; 24:451-456. [DOI: 10.1089/gtmb.2020.0012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Ana Gabriela Colima-Fausto
- Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México
- División de Genética and Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
- School of Medicine, Universidad Autónoma de Guadalajara, Guadalajara, Jalisco, México
| | - José Sánchez-Corona
- División de Medicina Molecular, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - Guadalupe Ramírez-López
- Instituto Mexicano del Seguro Social, Unidad de Investigación Epidemiológica y en Servicios de Salud del Adolescente, Tonalá, Jalisco, México
| | | | - María Teresa Magaña-Torres
- División de Genética and Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
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González-Mercado A, Magaña-Torres MT, Sánchez-López JY, Ríos-Silva M, Ibarra-Cortés B, Trujillo X, Huerta M. The Relationship of Single Nucleotide Polymorphisms in the TRPV1 Gene with Lipid Profile, Glucose, and Blood Pressure in Mexican Population. Genet Test Mol Biomarkers 2020; 24:420-424. [PMID: 32460554 DOI: 10.1089/gtmb.2019.0213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Aim: We analyzed the frequencies of the rs222749 G>A, rs222747 G>C, rs224534 G>A, and rs8065080 C > T polymorphisms in the TRPV1 gene and their relationships with biomarkers in a Mexican population. Materials and Methods: We included 195 students from two Mexican universities (72.3% female and 27.7% male, mean age, 20.8 ± 3.3 years). The biomarkers analyzed were lipid profile, glucose levels, blood pressure (BP), and body mass index. DNA was obtained from leukocytes by the dodecyltrimethylammonium bromide and cetyltrimethylammonium bromide method and polymorphisms were determined with TaqMan single nucleotide polymorphism (SNP) genotyping assays. Results: Alterations in lipid profile were total cholesterol ≥200 mg/dL in 9.7% of participants, triglycerides (TG) ≥150 mg/dL in 9.2%, high-density lipoprotein (HDL) <35 mg/dL in 6.7%, and low-density lipoprotein (LDL) ≥130 mg/dL in 6.2% of participants. Moreover, 8.2% of the subjects had BP values consistent with hypertension. The most frequent alleles were rs222749G (89.2%), rs222747G (69.2%), rs224534G (59.7%), and rs8065080T (62.3%). An analysis of the associations between the genotypic data and the biomarkers showed that the rs222749GA and rs224534GA genotypes were associated with higher diastolic and systolic BP values, respectively; the rs222747CC genotype was associated with lower LDL levels; the rs224534AA genotype was associated with higher HDL levels and lower triglycerides and LDL. The GGGC/GCAT and GGGT/GCAT haplotypes were associated with higher systolic BP. Conclusions: This study suggests a possible association between TRPV1 gene polymorphisms and BP and lipid profiles in a Mexican population.
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Affiliation(s)
- Anahí González-Mercado
- Institute of Human Genetics "Dr. Enrique Corona Rivera," Department of Molecular and Genomic Biology, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco, México.,Dr. Enrico Stefani Research Unit, University Center for Biomedical Research, Universidad de Colima, Colima, México
| | - María Teresa Magaña-Torres
- Genetics Division, Western Biomedical Research Center, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - Josefina Yoaly Sánchez-López
- Genetics Division, Western Biomedical Research Center, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - Mónica Ríos-Silva
- Dr. Enrico Stefani Research Unit, University Center for Biomedical Research, Universidad de Colima, Colima, México.,Universidad de Colima-Cátedras CONACyT, Colima, México
| | - Bertha Ibarra-Cortés
- Institute of Human Genetics "Dr. Enrique Corona Rivera," Department of Molecular and Genomic Biology, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - Xochitl Trujillo
- Dr. Enrico Stefani Research Unit, University Center for Biomedical Research, Universidad de Colima, Colima, México
| | - Miguel Huerta
- Dr. Enrico Stefani Research Unit, University Center for Biomedical Research, Universidad de Colima, Colima, México
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Hernández-Sandoval JA, Gutiérrez-Angulo M, Magaña-Torres MT, Alvizo-Rodríguez CR, Ramírez-Plascencia HHF, Flores-López BA, Valenzuela-Pérez JA, Peregrina-Sandoval J, Moreno-Ortiz JM, Domínguez-Valentín M, Ayala-Madrigal MDLL. Prevalence of the BRAF p.v600e variant in patients with colorectal cancer from Mexico and its estimated frequency in Latin American and Caribbean populations. J Investig Med 2020; 68:985-991. [PMID: 32184228 PMCID: PMC7306871 DOI: 10.1136/jim-2020-001301] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/20/2020] [Indexed: 01/08/2023]
Abstract
This study aimed to investigate the frequency of the somatic BRAF p.V600E in patients with colorectal cancer (CRC) in Mexico and compare it with those estimated for Latin American and Caribbean populations. One hundred and one patients with CRC with AJCC stages ranging I–IV from Western Mexico were included, out of which 55% were male and 61% had AJCC stage III–IV, with a mean age of 60 years. PCR-Sanger sequencing was used to identify the BRAF p.V600E variant. In addition, a systematic literature search in PubMed/Medline database and Google of the 42 countries in Latin America and the Caribbean led to the collection of information on the BRAF p.V600E variant frequency of 17 population reports. To compare the BRAF variant prevalence among populations, a statistical analysis was performed using GraphPad Prism V.6.0. We found that 4% of patients with CRC were heterozygous for the p.V600E variant. The χ2 test showed no significant difference (p>0.05) in p.V600E detection when comparing with other Latin American and Caribbean CRC populations, except for Chilean patients (p=0.02). Our observational study provides the first evidence on the frequency of BRAF p.V600E in patients with CRC from Western Mexico, which is 4%, but increases to 7.8% for all of Latin America and the Caribbean. The patient mean age and genetic descent on the observed frequencies of the variant in populations could influence the frequency differences.
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Affiliation(s)
- Jesús Arturo Hernández-Sandoval
- Instituto de Genética Humana "Dr. Enrique Corona Rivera" y Doctorado en Genética Humana, Departamento de Biología Molecular y Genómica, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - Melva Gutiérrez-Angulo
- Instituto de Genética Humana "Dr. Enrique Corona Rivera" y Doctorado en Genética Humana, Departamento de Biología Molecular y Genómica, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco, México.,Departamento de Clínicas, CUALTOS, Universidad de Guadalajara, Tepatitlán de Morelos, Jalisco, México
| | - María Teresa Magaña-Torres
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - Carlos Rogelio Alvizo-Rodríguez
- Instituto de Genética Humana "Dr. Enrique Corona Rivera" y Doctorado en Genética Humana, Departamento de Biología Molecular y Genómica, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - Helen Haydee Fernanda Ramírez-Plascencia
- Instituto de Genética Humana "Dr. Enrique Corona Rivera" y Doctorado en Genética Humana, Departamento de Biología Molecular y Genómica, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - Beatriz Armida Flores-López
- Instituto de Genética Humana "Dr. Enrique Corona Rivera" y Doctorado en Genética Humana, Departamento de Biología Molecular y Genómica, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | | | - Jorge Peregrina-Sandoval
- Laboratorio de Inmunología, CUCBA, Universidad de Guadalajara, Zapopan, Jalisco, México.,Laboratorio de Patología Clínica, Hospital Civil "Fray Antonio Alcalde", Guadalajara, Jalisco, México
| | - José Miguel Moreno-Ortiz
- Instituto de Genética Humana "Dr. Enrique Corona Rivera" y Doctorado en Genética Humana, Departamento de Biología Molecular y Genómica, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - Mev Domínguez-Valentín
- Department of Tumor Biology, Institute for Cancer Research, University of Oslo, Oslo, Norway.,Instituto de Investigación, Universidad Católica Los Angeles de Chimbote, Chimbote, Áncash, Perú
| | - María de la Luz Ayala-Madrigal
- Instituto de Genética Humana "Dr. Enrique Corona Rivera" y Doctorado en Genética Humana, Departamento de Biología Molecular y Genómica, CUCS, Universidad de Guadalajara, Guadalajara, Jalisco, México
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10
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Meza-Espinoza JP, Vásquez-Jiménez EA, Barajas-Torres RL, Magaña-Torres MT, González-García JR. BCR/ABL1 Transcripts in Healthy Individuals: A Comparative Analysis Between First-Degree Relatives of Patients with Chronic Myelogenous Leukemia and Subjects without Antecedents of the Disease. Ann Clin Lab Sci 2019; 49:703-709. [PMID: 31882420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
BCR/ABL1 transcripts, the molecular hallmarks of chronic myeloid leukemia (CML), have been detected in peripheral blood from healthy individuals. Although CML is a sporadic disease, familial occurrence has been reported. This raises the question of whether there is a hereditary factor related to the etiology of CML. Our aim is to compare the BCR/ABL1 e13a2 and e14a2 transcript frequency in healthy first-degree relatives of families with CML versus individuals from families without CML antecedents. Ninety-eight healthy individuals, sorted into two groups, were studied: a group consisting of 46 first-degree relatives from families having a CML affected, and another with 52 healthy individuals from families without CML antecedents. BCR/ABL1 e13a2 and e14a2 transcripts were detected in mRNA isolated from peripheral blood leukocytes. We observed 28 of 98 individuals positive for at least one BCR/ABL1 transcript: e14a2 was detected in 22, e13a2 in 4, and co-expression was observed in 2 subjects. The positivity rate in relatives of CML cases was 33%, whereas individuals without CML antecedents had a 25% positivity rate, showing no statistical difference. Our results corroborate the presence of e13a2 and e14a2 BCR/ABL1 transcripts in the peripheral blood of healthy individuals, but has not a found familial factor related to the etiology of this rearrangement.
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Affiliation(s)
- Juan Pablo Meza-Espinoza
- Facultad de Medicina e Ingeniería en Sistemas Computacionales de Matamoros, Universidad Autónoma de Tamaulipas, Matamoros, Tamaulipas, México
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11
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Nava-Rodríguez MP, Domínguez-Cruz MD, Aguilar-López LB, Borjas-Gutiérrez C, Magaña-Torres MT, González-García JR. Genomic instability in a chronic lymphocytic leukemia patient with mono-allelic deletion of the DLEU and RB1 genes. Mol Cytogenet 2019; 12:2. [PMID: 30733830 PMCID: PMC6357463 DOI: 10.1186/s13039-019-0417-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 01/22/2019] [Indexed: 01/10/2023] Open
Abstract
Background The most frequent cytogenetic abnormality detected in chronic lymphocytic leukemia (CLL) patients is the presence of a deletion within the chromosome band 13q14. Deletions can be heterogeneous in size, generally encompassing the DLEU1 and DLEU2 genes (minimal deleted region), but at times also including the RB1 gene. The latter, larger type of deletions are associated with worse prognosis. Genomic instability is a characteristic of most cancers and it has been observed in CLL patients mainly associated with telomere shortening. Case presentation Cytogenetic and fluorescence in situ hybridization studies of a CLL patient showed a chromosomal translocation t(12;13)(q15;q14), a mono-allelic 13q14 deletion encompassing both the DLEU and RB1 genes, and genomic instability manifested as chromosomal breaks, telomeric associations, binucleated cells, nucleoplasmic bridges, and micronucleated cells. In conclusion, our CLL patient showed genomic instability in conjunction with a 13q14 deletion of approximately 2.6 megabase pair involving the DLEU and RB1 genes, as well as other genes with potential for producing genomic instability due to haploinsufficiency.
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Affiliation(s)
- María Paulina Nava-Rodríguez
- 1Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud. Universidad de Guadalajara, Guadalajara, Jalisco Mexico.,2División de Genética, Centro de investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, CIBO-IMSS, Guadalajara, Jalisco Mexico
| | | | | | - César Borjas-Gutiérrez
- 4UMAE H. Especialidades-CMNO, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco México
| | - María Teresa Magaña-Torres
- 2División de Genética, Centro de investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, CIBO-IMSS, Guadalajara, Jalisco Mexico
| | - Juan Ramón González-García
- 2División de Genética, Centro de investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, CIBO-IMSS, Guadalajara, Jalisco Mexico
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12
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Bustos-Carpinteyro AR, Magaña-Torres MT, González-García JR, Torres-Jasso JH, Sánchez-López JY. The human epidermal receptors in gastric cancer: molecular alterations and its role as therapeutic targets. GAC MED MEX 2019. [DOI: 10.24875/gmm.m18000090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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13
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Bustos-Carpinteyro AR, Oliveira C, Sousa A, Oliveira P, Pinheiro H, Carvalho J, Magaña-Torres MT, Flores-Miramontes MG, Aguilar-Lemarroy A, Jave-Suárez LF, Peregrina-Sandoval J, Cruz-Ramos JA, Sánchez-López JY. CDH1 somatic alterations in Mexican patients with diffuse and mixed sporadic gastric cancer. BMC Cancer 2019; 19:69. [PMID: 30642281 PMCID: PMC6332846 DOI: 10.1186/s12885-019-5294-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 01/07/2019] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Diffuse gastric cancer (DGC) is associated with the reduction or absence of the expression of the cell adhesion protein E-cadherin (encoded by the CDH1 gene). Molecular characteristics are less well described for mixed gastric cancer (MGC). The main somatic alterations that have been described in the CDH1 gene are mutations, loss of heterozygosity (LOH) and promoter methylation. The aim was to analyze CDH1 somatic alterations in Mexican patients with diffuse and mixed gastric cancer. METHODS We searched for mutations in the CDH1 gene in tumor DNA from DGC (n = 13) and MGC (n = 7) patients by next generation sequencing (NGS). Validation of findings was performed using Sanger sequencing. LOH was analyzed using dinucleotide repeat markers surrounding the CDH1 gene, and methylation was investigated by DNA bisulfite conversion and sequencing. E-cadherin protein deficiency was analyzed by immunohistochemistry. RESULTS Seventeen point variants were identified by NGS, 13 of them were validated by Sanger sequencing. Only 1/13 had not been previously reported (c.-137C > A), and 12/13 were already reported as polymorphisms. Two DGC cases presented LOH at the locus 16q22.1 (13.3%). CDH1 promoter methylation was positive in (7/11) 63.6% and (4/6) 66.6% of the cases with DGC and MGC, respectively. E-cadherin protein deficiency was observed in 58.3% of DGC cases while 100% in MGC cases. CONCLUSIONS While no pathogenic somatic mutations were found that could explain the diffuse histology of gastric cancer in DGC and MGC, methylation was the most common somatic inactivation event of the CDH1 gene, and LOH was rare. The previously unreported c.-137C > A variant modify the CDH1 gene expression since it alters the binding sites for transcription factors.
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Affiliation(s)
- Andrea Rebeca Bustos-Carpinteyro
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Sierra Mojada N. 800, Col. Independencia, C. P. 44340, Guadalajara, Jalisco, México.,Doctorado en Genética Humana, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - Carla Oliveira
- Expression Regulation in Cancer, IPATIMUP, Institute of Molecular Pathology and Immunology of the University of Porto, Porto, Portugal.,Instituto de Investigação e Inovação em Saúde (i3S; University of Porto, Porto, Portugal.,Faculty of Medicine, University of Porto, Porto, Portugal
| | - Abel Sousa
- Expression Regulation in Cancer, IPATIMUP, Institute of Molecular Pathology and Immunology of the University of Porto, Porto, Portugal.,Instituto de Investigação e Inovação em Saúde (i3S; University of Porto, Porto, Portugal
| | - Patricia Oliveira
- Expression Regulation in Cancer, IPATIMUP, Institute of Molecular Pathology and Immunology of the University of Porto, Porto, Portugal.,Instituto de Investigação e Inovação em Saúde (i3S; University of Porto, Porto, Portugal
| | - Hugo Pinheiro
- Expression Regulation in Cancer, IPATIMUP, Institute of Molecular Pathology and Immunology of the University of Porto, Porto, Portugal.,Instituto de Investigação e Inovação em Saúde (i3S; University of Porto, Porto, Portugal.,Department of Internal Medicine, Centro Hospitalar Tâmega e Sousa Avenida do Hospital Padre Américo, N° 210 4564-007, Guilhufe - Penafiel, Portugal
| | - Joana Carvalho
- Expression Regulation in Cancer, IPATIMUP, Institute of Molecular Pathology and Immunology of the University of Porto, Porto, Portugal.,Instituto de Investigação e Inovação em Saúde (i3S; University of Porto, Porto, Portugal
| | - María Teresa Magaña-Torres
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Sierra Mojada N. 800, Col. Independencia, C. P. 44340, Guadalajara, Jalisco, México
| | - María Guadalupe Flores-Miramontes
- División de Inmunología, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - Adriana Aguilar-Lemarroy
- División de Inmunología, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - Luis Felipe Jave-Suárez
- División de Inmunología, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - Jorge Peregrina-Sandoval
- Laboratorio de Inmunobiología, Departamento de Biología Celular y Molecular. Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, CP 45510, Nextipac, Jalisco, México
| | | | - Josefina Yoaly Sánchez-López
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Sierra Mojada N. 800, Col. Independencia, C. P. 44340, Guadalajara, Jalisco, México.
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14
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Bustos-Carpinteyro AR, Magaña-Torres MT, González-García JR, Torres-Jasso JH, Sánchez-López JY. Los receptores epidérmicos humanos en el cáncer gástrico: alteraciones moleculares y su papel como diana terapéutica. GAC MED MEX 2018; 153:830-840. [PMID: 29414960 DOI: 10.24875/gmm.17002748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Gastric cancer (GC) is the third leading cause of cancer death worldwide; both environmental and genetic factors are involved in the etiology of this neoplasia. The human epidermal receptor (HER) pathway is essential for proliferation and differentiation of normal cells; but it is also implicated in the growth of cancer cells. In this work we investigate the molecular alterations in genes that encodes for HER receptors reported in GC, as well the role as therapeutic targets. We reviewed the literature reported to date regarding overexpression of HER-receptors, amplification and somatic mutations in ERBB genes occurred in gastric tumors, as well as the anti-HER therapies tested for treatment of GC. In GC, the overexpression of HER family is reported in a range of 12-87% of cases; up to 67% of cases with amplification, and 90 somatic mutations in ERBB genes. The only drug anti-HER approved for using combined with chemotherapy, in treatment of patients with advanced GC is trastuzumab; however, other targeted therapies are being investigated. The role of the HER family as a therapeutic target has not shown significant improvements in recent years; hence, further studies are required to find better options for treatment of GC.
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Affiliation(s)
- Andrea Rebeca Bustos-Carpinteyro
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social; México.,Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara. Guadalajara, Jal.; México
| | - María Teresa Magaña-Torres
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social; México
| | - Juan Ramón González-García
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social; México
| | - Juan Heriberto Torres-Jasso
- Departamento de Ciencias Biológicas, División de Ciencias Biológicas y de la Salud, Centro Universitario de la Costa, Universidad de Guadalajara, Delegación Ixtapa, Puerto Vallarta, Jal. México
| | - Josefina Yoaly Sánchez-López
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social; México
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15
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Rodríguez-Preciado SY, Magaña-Torres MT, Jaloma Cruz AR, Barros-Núñez P. Detection of monoclonal B cells in general population from two different regions of Mexico. Int J Immunogenet 2017; 44:279-285. [PMID: 29057607 DOI: 10.1111/iji.12343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 08/14/2017] [Accepted: 09/17/2017] [Indexed: 11/27/2022]
Abstract
To estimate the frequency of monoclonal B cells in Mexican general population from two different regions of Mexico. Monoclonal B cells were detected by rearrangements of the immunoglobulin heavy chains (IGH) in 288 individuals: 188 from a metropolitan area and 100 from a rural area. After DNA extraction from peripheral blood by the CTAB/DTAB method, multiplex PCR was used to amplify the IGH rearrangements, followed by capillary electrophoresis. In together, 9.4% of the studied individuals showed monoclonal B cells. This prevalence is significantly higher to those previously described for other populations, but similar to a report in the Spanish population. Among people from the metropolitan area, 12.8% exhibited monoclonal B cells in comparison with 3% of people from the rural area. All individuals showing monoclonal B cells were elder than 40 years. Higher frequency of incomplete monoclonal rearrangements was observed. Individuals from urban areas show significantly increased frequencies of monoclonal B cells regarding the people from the rural area. It is reasonable to believe that the environmental factor could have a greater impact on the development of monoclonality than the genetic component.
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Affiliation(s)
- Sergio Yair Rodríguez-Preciado
- Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, México.,IMSS, Centro de Investigación Biomédica de Occidente, Guadalajara, México
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16
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Lima-Martínez MM, Paoli M, Vázquez-Cárdenas A, Magaña-Torres MT, Guevara O, Muñoz MC, Parrilla-Alvarez A, Márquez Y, Medeiros A, Bourbon M. Frecuencia, aspectos clínicos y moleculares de la hipercolesterolemia familiar en una unidad de endocrinología de Ciudad Bolívar, Venezuela. ENDOCRINOL DIAB NUTR 2017; 64:432-439. [DOI: 10.1016/j.endinu.2017.05.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 05/28/2017] [Accepted: 05/29/2017] [Indexed: 10/19/2022]
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17
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Rizo-de-la-Torre LC, Ibarra B, Sánchez-López JY, Magaña-Torres MT, Rentería-López VM, Perea-Díaz FJ. Three novel HBB mutations, c.-140C>G (-90 C>G), c.237_256delGGACAACCTCAAGGGCACCT (FS Cd 78/85 -20 bp), and c.315+2T>G (IVS2:2 T>G). Update of the mutational spectrum of β-Thalassemia in Mexican mestizo patients. Int J Lab Hematol 2017; 39:539-545. [PMID: 28603845 DOI: 10.1111/ijlh.12692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 03/24/2017] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Beta-thalassemia (β-thal) is frequent in Mexican patients with microcytosis and hypochromia. We report three novel mutations and analyze the actual mutational spectrum in Mexican population. METHODS One hundred and forty-nine β-thal Mexican mestizo patients were studied (154 alleles). ARMS-PCR was performed to identify Cd39C>T, IVS1:1G>A, IVS1:110G>A, -28A>C, initiation codonA>G and IVS1:5G>A mutations, and gap-PCR for δβ-thal Spanish type. DNA sequencing of HBB gene was carried out in negative samples for the initial screening. RESULTS Fifteen different HBB gene mutations were observed in 148 alleles; three of them are novel: -90C>G, 20 bp deletion (at codons 78/85), and IVS2:2T>G; the mutation IVS1:6T>C that was observed for first time in our population; and eleven previously described mutations. Six alleles showed normal HBB sequence. To date, a total of 21 different mutations have been observed in Mexican patients; the four most frequent mutations are of Mediterranean origin: Cd39C>T (37.2%), IVS1:1G>A (17.3%), IVS1:110G>A (13.9%), and δβ-thal Spanish type (9.0%), which represent 77.4% of the total studied alleles. CONCLUSION Considering the novel mutations -90C>G, -20 bp Cd78/85, IVS2:2T>G and the first observation of IVS1:6T>C, the molecular spectrum of β-thal in Mexicans comprises 21 different mutations, confirming the high allelic heterogeneity in Mexicans.
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Affiliation(s)
- L C Rizo-de-la-Torre
- Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México.,División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - B Ibarra
- Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - J Y Sánchez-López
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - M T Magaña-Torres
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - V M Rentería-López
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - F J Perea-Díaz
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
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18
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Jiménez-Arredondo RE, Brambila-Tapia AJL, Mercado-Silva FM, Magaña-Torres MT, Figuera LE. Determination of SCN1A genetic variants in Mexican patients with refractory epilepsy and Dravet syndrome. Genet Mol Res 2017; 16:gmr-16-02-gmr.16029405. [PMID: 28525652 DOI: 10.4238/gmr16029405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Mutations in the SCN1A gene can result in syndromes associated with epilepsy, including the Dravet syndrome (DS). However, the prevalence of such mutations in these diseases varies widely between different studies, and has not been examined in Mexican patients with epilepsy. Therefore, the objective of this study was to determine the frequency of SCN1A mutations (in the exon 26) in a cohort of Mexican patients with DS and refractory epilepsy (RE). We recruited 24 Mexican patients (14 males and 10 females), of which 15 were diagnosed with RE and 9 were diagnosed with DS. The SCN1A gene was sequenced to uncover mutations in exon 26. We detected 2 novel genotypes in 2 DS patients. One was a synonymous variant, c.5418 G > A (E1806E), and the other was a missense variant, c. 5324 T > C (L1775P). The missense mutation was predicted to be damaging with a score of 100% by the PolyPhen-2 program. The frequency of pathogenic variants was 4.17% in all the patients and 11.1% in DS patients, which, together with other publications, emphasize that specific and more severe phenotypes are associated with SCN1A mutations.
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Affiliation(s)
- R E Jiménez-Arredondo
- Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, , , Mexico.,Hospital General No. 1, Instituto Mexicano del Seguro Social, Tepic, Nayarit, Mexico
| | - A J L Brambila-Tapia
- Departamento de Psicología Básica, Centro Universitario de Ciencias de la Salud, , , Mexico
| | - F M Mercado-Silva
- Unidad Médica de Alta Especialidad, Hospital de Pediatría, Centro Médico Nacional de Occidente, , , Mexico
| | - M T Magaña-Torres
- División de genética, Centro de Investigación Biomédica de Occidente, , , Mexico
| | - L E Figuera
- División de genética, Centro de Investigación Biomédica de Occidente, , , Mexico
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Artaza-Irigaray C, Flores-Miramontes MG, Olszewski D, Magaña-Torres MT, López-Cardona MG, Leal-Herrera YA, Piña-Sánchez P, Jave-Suárez LF, Aguilar-Lemarroy A. Genetic variability in E6, E7 and L1 genes of Human Papillomavirus 62 and its prevalence in Mexico. Infect Agent Cancer 2017; 12:15. [PMID: 28270859 PMCID: PMC5336664 DOI: 10.1186/s13027-017-0125-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 02/20/2017] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Human papillomavirus (HPV) is the main etiological agent of cervical cancer, the third most common cancer among women globally and the second most frequent in Mexico. Persistent infection with high-risk HPV genotypes is associated with premalignant lesions and cervical cancer development. HPVs considered as low risk or not yet classified, are often found in coinfection with different HPV genotypes. Indeed, HPV62 is one of the most prevalent HPV detected in some countries, but there is limited information about its prevalence in other regions and there are no HPV62 variants currently described. The aim of this study was to determine the prevalence of HPV62 in cervical samples from Mexican women and to identify mutations in the L1, E6 and E7 genes, which have never been reported in our population. METHODS HPV screening was performed by Cobas HPV Test in women who attended prevention health programs and dysplasia clinics. All HPV positive samples (n = 491) and 87 additional cervical cancer samples were then genotyped with Linear Array HPV Genotyping test. Some samples were selected to corroborate genotyping by Next-Generation sequencing. On the other hand, nucleotide changes in L1, E6 and E7 genes were determined using PCR, Sanger sequencing and analysis with the CLC-MainWorkbench 7.6.1 software. L1 protein structure was predicted with the I-TASSER server. RESULTS Using Linear Array, HPV62 prevalence was 7.6% in general population, 8% in Cervical Intraepithelial Neoplasia grade 1 (CIN1) samples and 4.6% in cervical samples. The presence of HPV62 was confirmed with Next-Generation sequencing. Regarding L1 gene, novel sequence variations were detected, but they did not alter the tertiary structure of the protein. Moreover, several nucleotide substitutions were found in E6 and E7 genes compared to reference HPV62 genomic sequence. Specifically, three non-synonymous sequence variations were detected, two in E6 and one in E7. CONCLUSIONS HPV62 is a frequent HPV genotype found mainly in general population and in women with CIN1, and in 90.5% of the cases it was found in coinfection with other HPVs. Novel nucleotide changes in its L1, E6 and E7 genes were detected, some of them lead to changes in the protein sequence.
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Affiliation(s)
- Cristina Artaza-Irigaray
- División de Inmunología, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco Mexico.,Programa de Doctorado en Ciencias Biomédicas, Centro Universitario de Ciencias de la Salud (CUCS), Universidad de Guadalajara, Jalisco, Mexico
| | - María Guadalupe Flores-Miramontes
- División de Inmunología, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco Mexico.,Programa de Doctorado en Ciencias Biomédicas, Centro Universitario de Ciencias de la Salud (CUCS), Universidad de Guadalajara, Jalisco, Mexico
| | - Dominik Olszewski
- Institute of Pharmacy and Molecular Biotechnology, University of Heidelberg, Heidelberg, Germany
| | - María Teresa Magaña-Torres
- División de Inmunología, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco Mexico
| | - María Guadalupe López-Cardona
- Unidad de Medicina Genómica y Genética, Hospital Regional Dr. Valentín Gómez Farías - ISSSTE, Guadalajara, Jalisco Mexico
| | | | - Patricia Piña-Sánchez
- Laboratorio de Oncología Molecular, Unidad de Investigación Médica en Enfermedades Oncológicas (UIMEO) - IMSS, Ciudad de Mexico, Mexico
| | - Luis Felipe Jave-Suárez
- División de Inmunología, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco Mexico
| | - Adriana Aguilar-Lemarroy
- División de Inmunología, Centro de Investigación Biomédica de Occidente (CIBO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco Mexico
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20
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Bustos-Carpinteyro AR, Delgado-Figueroa N, Santiago-Luna E, Magaña-Torres MT, Sánchez-López JY. Association between the CDH1-472delA and -160C>A polymorphisms and diffuse and intestinal gastric cancer in a Mexican population. Genet Mol Res 2016; 15:gmr8715. [PMID: 27706737 DOI: 10.4238/gmr.15038715] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Gastric cancer (GC), the third leading cause of cancer-related deaths in Mexico and worldwide, can be classified into diffuse (DGC) or intestinal (IGC) types based on its histological characteristics. DGC is characterized by reduced expression of the cell adhesion protein E-cadherin, which is encoded by CDH1. The -472delA (rs5030625) and -160C>A (rs16260) polymorphisms in CDH1 induce a decrease in gene transcription; in fact, these mutated alleles have been associated with GC in some populations, with conflicting results. The aim of this study was to determine the association between the CDH1 -472delA and -160C>A polymorphisms and DGC and IGC in Mexican patients. The study was conducted in 24, 23, 48, and 93 individuals with DGC and IGC, without GC (control), and belonging to the general Mexican population (GMP), respectively. The genotypes were obtained by polymerase chain reaction - restriction fragment length polymorphism and the obtained data analyzed using Arlequin 3.1. The frequencies of the mutated allele (A) of -472delA were 0.326, 0.318, 0.284, and 0.296 in the DGC, IGC, control, and GMP groups, respectively, and those of the -160C>A polymorphism were 0.174, 0.318, 0.313, and 0.280, respectively. The genotype and allele frequencies of the two polymorphisms did not differ significantly (P > 0.05) among DGC, IGC, and control subjects. Therefore, we concluded that the CDH1 -472delA and -160C>A polymorphisms are not associated with DGC or IGC in patients from western Mexico.
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Affiliation(s)
- A R Bustos-Carpinteyro
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México.,Programa de Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - N Delgado-Figueroa
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - E Santiago-Luna
- Gastroenterología, Hospital de Especialidades, Centro Médico Nacional de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - M T Magaña-Torres
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
| | - J Y Sánchez-López
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, México
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Da Silva-José TD, Juárez-Rendón KJ, Juárez-Osuna JA, Porras-Dorantes A, Valladares-Salgado A, Cruz M, Gonzalez-Ibarra M, Soto AG, Magaña-Torres MT, Sandoval-Ramírez L, García-Ortiz JE. Dup-24 bp in the CHIT1 Gene in Six Mexican Amerindian Populations. JIMD Rep 2015; 23:123-7. [PMID: 25967229 DOI: 10.1007/8904_2015_442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 04/03/2015] [Accepted: 04/09/2015] [Indexed: 12/20/2022] Open
Abstract
Chitotriosidase (CHIT, EC 3.2.1.14) is an enzyme secreted by activated macrophages with the ability to hydrolyze the chitin of pathogens. The high activity of this enzyme has been used as a secondary biomarker of response to treatment in patients with Gaucher disease (OMIM 230800). Within the world's population, approximately 6% is homozygous and 35% is heterozygous for the most common polymorphism in the CHIT1 gene, a 24-bp duplication (dup-24 bp), with homozygosity of this duplication causing inactivation of the enzyme but without major consequences for health. To determine the frequency of the dup-24 bp CHIT1 gene in indigenous populations from Mexico, 692 samples were analyzed: Purepecha (49), Tarahumara (97), Huichol (97), Mayan (139), Tenek (97), and Nahua (213). We found that the groups were in Hardy-Weinberg equilibrium. The dup-24 bp allele frequency was found to be (in order of highest to lowest) 37% (Mayan), 34% (Huichol and Nahua), 33% (Purepecha), 31% (Tenek), and 29% (Tarahumara).
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Affiliation(s)
- T D Da Silva-José
- División de Genética, Centro de Investigación Biomédica de Occidente, CMNO-IMSS, Sierra Mojada 800, Col. Independencia, Guadalajara, 44340, Jalisco, Mexico
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Torres-Jasso JH, Marín ME, Santiago-Luna E, Leoner JC, Torres J, Magaña-Torres MT, Perea FJ, Ibarra B, Sánchez-López JY. EGFR gene polymorphisms -216G>T and -191C>A are risk markers for gastric cancer in Mexican population. Genet Mol Res 2015; 14:1802-7. [PMID: 25867325 DOI: 10.4238/2015.march.13.8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Epidermal growth factor receptor (EGFR) is a transmembrane glycoprotein with tyrosine-kinase activity that plays an important role in multiple cellular functions. EGFR overexpression has been observed in several types of tumors and it is significantly associated with disease stage, survival, prognosis, and progression of cancer. The polymorphisms -216G>T, -191C>A, and (CA)n first intervening sequence (IVS1) have been related to EGFR overexpression and have been studied in several types of cancer, but not in gastric cancer (GC). The aim of this study was to determine the association of these 3 polymorphisms and GC. Genomic DNA from 68 GC patients and 102 healthy blood donors were analyzed. Polymorphisms were identified by DNA-sequencing (-216G>T and -191C>A) and GeneScan (CA)n IVS1. The results showed that the distribution of the -216G>T and -191C>A genotypes differed between groups (P < 0.05). The odds ratio for the -216TT genotype was 4.59 (95% confidence interval = 1.55-13.54, P < 0.05) and 10.71 (95% confidence interval = 2.31-49.59, P < 0.05) for the -191AA genotype, both in a recessive model. The genotype and allele distributions of the (CA)n IVS1 repeat was similar in both groups. In conclusion, the -216TT and -191AA genotypes and GA haplotype of the EGFR gene were found to be associated with an increased risk of gastric cancer in a Mexican population.
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Affiliation(s)
- J H Torres-Jasso
- División de Genética, Centro de Investigación Biomédica de Occidente, IMSS, Guadalajara, Jalisco, México
| | - M E Marín
- Servicio de Endoscopías, Unidad Médica de Atención Ambulatoria No. 52, IMSS, Guadalajara, Jalisco, México
| | - E Santiago-Luna
- Servicio de Endoscopías, Hospital de Especialidades, Centro Médico Nacional de Occidente, IMSS, Guadalajara, Jalisco, México
| | - J C Leoner
- Servicio de Oncología, Hospital de Especialidades, Centro Médico Nacional de Occidente, IMSS, Guadalajara, Jalisco, México
| | - J Torres
- Unidad de Investigación Médica de Enfermedades Infecciosas y Parasitarias, Hospital de Pediatría, Centro Médico Nacional Siglo XXI, IMSS, México
| | - M T Magaña-Torres
- División de Genética, Centro de Investigación Biomédica de Occidente, IMSS, Guadalajara, Jalisco, México
| | - F J Perea
- División de Genética, Centro de Investigación Biomédica de Occidente, IMSS, Guadalajara, Jalisco, México
| | - B Ibarra
- División de Genética, Centro de Investigación Biomédica de Occidente, IMSS, Guadalajara, Jalisco, México
| | - J Y Sánchez-López
- División de Genética, Centro de Investigación Biomédica de Occidente, IMSS, Guadalajara, Jalisco, México
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Ríos-González BE, Luévano-Ortega KE, Saldaña-Cruz AM, González-García JR, Magaña-Torres MT. Polymorphisms of seven genes involved in lipid metabolism in an unselected Mexican population. J Genet 2011; 90:e114-e119. [PMID: 22232194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Affiliation(s)
- Blanca E Ríos-González
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Universidad de Guadalajara, Guadalajara, Jalisco 44340, México
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Vasquez-Jimenez EA, Romo-Martínez EJ, Meza-Espinoza JP, Lopez-Guido B, Magaña-Torres MT, Gonzalez-Garcia JR. A new complex chromosomal translocation t(2;12;21)(q33;p13;q22) in B-cell acute lymphoblastic leukemia. ACTA ACUST UNITED AC 2006; 168:179-80. [PMID: 16843113 DOI: 10.1016/j.cancergencyto.2005.12.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
MESH Headings
- Burkitt Lymphoma/genetics
- Child, Preschool
- Chromosomes, Human, Pair 12/genetics
- Chromosomes, Human, Pair 2/genetics
- Chromosomes, Human, Pair 21/genetics
- Core Binding Factor Alpha 2 Subunit/genetics
- Female
- Humans
- In Situ Hybridization, Fluorescence
- Oncogene Proteins, Fusion/genetics
- Translocation, Genetic/genetics
- Tumor Cells, Cultured
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