Peculiarities of TLR-2 (Arg753Gln) and TLR-4 (Asp299Gly) polymorphism prevalence in patients with acute brucellosis with cardiovascular lesions

Elchin Huseynov Mammad oglu

Abstract


Currently, there are single data on the relationship between TLR-2 polymorphisms (Arg753Gln) and TLR-4 (Asp299Gly) polymorphisms and susceptibility to brucellosis. Therefore, the aim of the study was to determine the frequency of TLR-2 (Arg753Gln) and TLR-4 (Asp299Gly) polymorphisms in patients with acute brucellosis with cardiovascular lesions in the Republic of Azerbaijan. 178 patients with a brucellosis clinic were examined. According to the criteria for inclusion in the study, only 120 people fully met all the criteria, which made up the main group. The control group consisted of 30 healthy individuals. TLR-2 (Arg753Gln) and TLR-4 (Asp299Gly) polymorphisms were also determined for all patients in both groups. In order to assess the state of the cardiovascular system, an electrocardiogram was recorded, blood pressure was measured, and an ultrasound scan of the heart was performed for all patients. It was found that 93 patients (77.50 ± 3.13%) with acute brucellosis had some or other signs of impairment in the work of the cardiovascular system, identified clinically or as a result of functional examination. Among carriers of the Asp/Gly genotype of the TLR-4 gene, an increased risk of brucellosis with CVS diseases was determined (χ 2 = 30.19; p <0.0001; OR = 24.29; 95% CI [5.45 - 108.37]), while the carriage of the homozygous genotype Asp / Asp, by contrast, had a protective effect on the development of brucellosis (OR = 0.06, 95% CI [0.02 - 0.20]). Among the carriers of the Arg /Gln genotype and the Gln / Gln genotype of the TLR-2 gene, a significantly increased risk of brucellosis with CVS diseases was determined (χ2 = 5.68; p = 0.02; OR = 3.10; 95% CI [0.99 - 9.67]) and (OR = 2.48; 95% CI [0.53 - 11.61]), respectively. While the carriage of the homozygous Arg / Arg genotype, by contrast, was rarely seen in patients with brucellosis (OR = 0.28, 95% CI [0.10 - 0.74]).

Keywords


acute brucellosis; TLR-4; TLR-2; polymorphism; cardiovascular system

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References


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DOI: http://dx.doi.org/10.5281/zenodo.3523227

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