The influence of infection on acute coronary syndrome and lipid metabolism in the Chinese ethnicity.

Background: Acute coronary syndrome (ACS) patients frequently present a relatively high prevalence of () infection. was previously hypothesized to induce ACS through the regulation of lipid levels. However, the risk of -induced ACS varies significantly among different ethnic groups, and the associations between and lipid parameters remain unclear. This study aimed to systematically assess the risk of ACS in Chinese populations with infection while also evaluating the effects of on lipid parameters.

Materials And Methods: A hospital-based case-control study involving 280 participants was conducted. Immunoblotting was used for the detection and genotyping of . The associations between and ACS, as well as lipid parameters, were analyzed via the chi-square test and a multiple logistic regression model.

Results: infection significantly increased the risk of ACS among all participants (adjusted odds ratio (OR) = 4.04, 95% confidence interval (CI): 1.76-9.25, < 0.05), with no associations with virulence factors ( () or ()). Subgroup analysis revealed a significant increase in the risk of ACS among the elderly population aged 56-64 years with infection. Additionally, a substantial association was observed between and acute myocardial infarction (AMI). No significant differences were found in lipid parameters, including low-density lipoprotein cholesterol (LDL-C), triglyceride (TG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), and the LDL/HDL ratio, between individuals positive and negative for infection. Similar results were observed between the ACS group and the control group.

Conclusions: Our study has demonstrated for the first time that does not significantly impact lipid metabolism but increases the risk of ACS fourfold in the Chinese population (OR = 4.04, 95% CI: 1.76-9.25). Furthermore, the virulence factors of ( and ) may not be involved in the mechanisms by which they promote the development of ACS. This finding provides additional evidence for the association between and ACS among different ethnic groups and refutes the biological mechanism by which affects ACS through lipid metabolism regulation. Regular screening for and eradication treatment in elderly individuals and those at high risk for ACS may be effective measures for reducing the incidence of ACS. Future research should include multicenter randomized controlled trials and explore host genetics and the effects of on the gut microbiota as potential biological pathways linking and ACS.