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Background: Previous genome-wide association studies have found two single nucleotide polymorphisms (SNP) rs7692387 and rs1842896 located on or near the GUCY1A3 gene were associated with coronary artery disease (CAD). GUCY1A3 was considered to be involved in the process of atherosclerosis, but there was little information about the association between genotypic polymorphisms of the GUCY1A3 and large artery atherosclerotic (LAA) stroke. This study aimed to investigate the associations between the GUCY1A3 rs7692387, rs1842896 polymorphisms and LAA stroke susceptibility.
Methods: A total of 298 LAA stroke patients and 300 control subjects from a southern Chinese Han population were included. SNaPshot technique was used for genotype analysis. Associations between genotypes and LAA stroke susceptibility were analyzed with logistic regression model.
Results: Our study found that under the recessive model (TT vs. GT + GG), the GUCY1A3 rs1842896 polymorphism was significantly correlated with LAA stroke (OR = 1.48, 95%CI: 1.07-2.04, P = 0.018). After adjustment for its effects on age, gender, cigarette smoking, total cholesterol, low-density lipoprotein cholesterol, HbA1c, hypertension, diabetes mellitus, and CAD, the rs1842896 TT genotype retained association with increased susceptibility to LAA stroke (recessive model: adjusted OR = 1.96, 95%CI: 1.22-3.17, P = 0.006). However, association between rs7692387 polymorphism with LAA stroke was not observed.
Conclusion: Our results indicate that the GUCY1A3 rs1842896 polymorphism is an LAA stroke risk factor in Southern Han Chinese.
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http://dx.doi.org/10.1186/s12944-019-1177-2 | DOI Listing |
J Electrocardiol
September 2025
Department of Cardiology, Ankara City Hospital, Health Sciences University, Ankara, Turkey.
Background: Interatrial block (IAB) is an electrocardiographic manifestation of atrial conduction delay and structural remodeling. While it has been linked to atrial fibrillation (AF) and thromboembolic events, its potential role in predicting left atrial appendage (LAA) thrombus formation remains underexplored. This study aimed to investigate the association between IAB and the presence of LAA thrombus in patients with nonvalvular AF (NVAF) or atrial flutter referred for rhythm control procedures.
View Article and Find Full Text PDFFront Cardiovasc Med
August 2025
Department of Cardiovascular Surgery, University Heart Center Hamburg, Hamburg, Germany.
Background: In patients with atrial fibrillation (AF) undergoing coronary artery bypass grafting (CABG) or aortic valve replacement (AVR), many surgeons are reluctant to open the left atrium for surgical ablation. However, especially in those with persistent AF, a box lesion isolating the entire posterior left atrial wall may be beneficial. Here, we describe our initial experience with a novel closed atrium bipolar radio-frequency left atrial box ablation technique.
View Article and Find Full Text PDFFront Neurol
August 2025
Institute of Neuroscience, Soochow University, Suzhou, China.
Introduction: Arterial dissection is an important etiology of stroke in young adults and may demonstrate distinct thrombus characteristics. While most studies have focused on compositional differences between cardioembolic (CE) and non-cardioembolic thrombi, systematic analyses of dissection-related thrombi remain scarce. This study characterized the compositions of dissection thrombi, compared them with those of non-dissection thrombi, and explored compositional variations among stroke etiologies.
View Article and Find Full Text PDFThromb Haemost
September 2025
School of Biomedical Engineering and Imaging Sciences, King's College London, United Kingdom, London, United Kingdom of Great Britain and Northern Ireland.
The left atrium (LA) is particularly susceptible to blood stasis in conditions like atrial fibrillation (AF), which can lead to thrombus formation, especially in the left atrial appendage (LAA). Spontaneous echo contrast (SEC) in the LA, detectable via transoesophageal echocardiography (TEE), occurs when blood flow slows, and has been strongly associated with thrombus formation and increased stroke risk, making it an important prognostic indicator. The underlying mechanism of LA SEC is thought to involve echogenic red blood cell aggregates formed due to low shear rates, but the roles of platelets and the coagulation cascade remain unclear.
View Article and Find Full Text PDFStruct Heart
August 2025
Section on Cardiology, Atrium Health Wake Forest Baptist Medical Center, Winston Salem, North Carolina, USA.
Background: Mounting evidence suggests surgical left atrial appendage (LAA) exclusion reduces stroke risk in patients with atrial fibrillation. Prior older research suggests that LAA exclusion is often incomplete, but few transesophageal echocardiogram (TEE) data exist evaluating LAA remnants.
Methods: We analyzed 121 patients with an available postoperative TEE who underwent LAA exclusion by surgical excision (SE), AtriClip occlusion (AO), or Tiger Paw occlusion (TO).