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PLoS One. 2015 Nov 23;10(11):e0141847. doi: 10.1371/journal.pone.0141847. eCollection 2015.

Genetic Susceptibility to Cardiac and Digestive Clinical Forms of Chronic Chagas Disease: Involvement of the CCR5 59029 A/G Polymorphism.

Author information

1
Laboratório de Imunogenética, Departamento de Biologia Molecular, Faculdade de Medicina de São José do Rio Preto, Avenida Brigadeiro Faria Lima, 5416, 15090-000, São José do Rio Preto, SP, Brazil.
2
Departamento de Cirurgia, Faculdade de Medicina de São José do Rio Preto, Avenida Brigadeiro Faria Lima, 5416, 15090-000, São José do Rio Preto, SP, Brazil.
3
Departamento de Cirurgia Geral, Fundação Faculdade Regional de Medicina-Hospital de Base, Avenida Brigadeiro Faria Lima, 5544, 15090-000, São José do Rio Preto, SP, Brazil.
4
Departamento de Epidemiologia e Saúde Coletiva, Faculdade de Medicina de São José do Rio Preto, Avenida Brigadeiro Faria Lima, 5416, 15090-000, São José do Rio Preto, SP, Brazil.
5
Centro de Investigação de Microrganismos, Departamento de Doenças Dermatológicas, Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto, Avenida Brigadeiro Faria Lima, 5416, 15090-000, São José do Rio Preto, SP, Brazil.
6
Departamento de Cardiologia e Cirurgia Cardiovascular, Faculdade de Medicina de São José do Rio Preto, Avenida Brigadeiro Faria Lima, 5416, 15090-000, São José do Rio Preto, SP, Brazil.

Abstract

The clinical manifestations of chronic Chagas disease include the cardiac form of the disease and the digestive form. Not all the factors that act in the variable clinical course of this disease are known. This study investigated whether the CCR5Δ32 (rs333) and CCR5 59029 A/G (promoter region--rs1799987) polymorphisms of the CCR5 gene are associated with different clinical forms of chronic Chagas disease and with the severity of left ventricular systolic dysfunction in patients with chronic Chagas heart disease (CCHD). The antibodies anti-T. cruzi were identified by ELISA. PCR and PCR-RFLP were used to identify the CCR5Δ32 and CCR5 59029 A/G polymorphisms. The chi-square test was used to compare variables between groups. There was a higher frequency of the AA genotype in patients with CCHD compared with patients with the digestive form of the disease and the control group. The results also showed a high frequency of the AG genotype in patients with the digestive form of the disease compared to the other groups. The results of this study show that the CCR5Δ32 polymorphism does not seem to influence the different clinical manifestations of Chagas disease but there is involvement of the CCR5 59029 A/G polymorphism in susceptibility to the different forms of chronic Chagas disease. Besides, these polymorphisms do not influence left ventricular systolic dysfunction in patients with CCHD.

PMID:
26599761
PMCID:
PMC4657911
DOI:
10.1371/journal.pone.0141847
[Indexed for MEDLINE]
Free PMC Article

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