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Santos LOD, Bispo AVS, Barros JVD, Laranjeira RSM, Pinto RDN, Silva JDA, Duarte ADR, Araújo J, Sandrin-Garcia P, Crovella S, Bezerra MAC, Belmont TFDM, Cavalcanti MDS, Santos N. CTLA-4 gene polymorphisms are associated with obesity in Turner Syndrome. Genet Mol Biol 2018; 41:727-734. [PMID: 30508004 PMCID: PMC6415610 DOI: 10.1590/1678-4685-gmb-2017-0312] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 02/27/2018] [Indexed: 01/15/2023] Open
Abstract
Turner syndrome (TS) is characterized by a set of clinical conditions, including autoimmune/inflammatory diseases and infectious conditions, that can compromise a patient’s quality of life. Here we assessed polymorphisms in CTLA-4 +49A/G (rs231775), PTPN22 +1858G/A (rs2476601), and MBL2 -550 (H/L) (rs11003125), -221(X/Y) (rs7096206) and exon 1 (A/O) in women from northeastern Brazil to determine whether polymorphisms within these key immune response genes confer differential susceptibility to clinical conditions in TS. A case-control genetic association study was performed, including 86 female TS patients and 179 healthy women. An association was observed for the A/G genotype of CTLA-4 +49A/G in TS patients (p=0.043, odds ratio [OR]=0.54). In addition, an association between the CTLA-4 G/G genotype and obesity was detected in TS patients (p=0.02, OR=6.04). Regarding, the -550(H/L) polymorphism in the MBL2 promoter, the frequency of the H/L genotype was significantly higher in the TS group than healthy controls (p=0.01, OR=1.96). The H/H genotype indicated a protective effect in TS patients (p=0.01, OR=0.23). No differences were observed in the distribution of -221(X/Y), MBL2 exon 1 variants, and PTPN22 +1858G/A in any assessed groups. CTLA-4 variants are potentially involved in obesity in this cohort of TS patients from northeastern Brazil.
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Affiliation(s)
| | - Adriana Valéria Sales Bispo
- Instituto Federal de Educação, Ciência e Tecnologia do Sertão Pernambucano, Campus Serra Talhada, Serra Talhada, PE, Brazil
| | | | | | | | | | - Andréa de Rezende Duarte
- Serviço de Genética Medica, Instituto de Medicina Integral Professor Fernando Figueira, Recife, PE, Brazil
| | - Jacqueline Araújo
- Serviço de Endocrinlogia Pediátrica do Hospital das Clínicas, Universidade Federal de Pernambuco, Recife, PE, Brazil
| | | | - Sergio Crovella
- Departmento de Genética, Universidade Federal de Pernambuco, Recife, PE, Brazil
| | | | | | | | - Neide Santos
- Departmento de Genética, Universidade Federal de Pernambuco, Recife, PE, Brazil
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