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Chinese Journal of Cerebrovascular Diseases(Electronic Edition) ›› 2024, Vol. 18 ›› Issue (01): 33-39. doi: 10.11817/j.issn.1673-9248.2024.01.006

• Original Article • Previous Articles    

Correlation between polymorphisms of fibrinogen β-chain promoter gene and the stability of carotid atherosclerotic plaques

Xuan Chen1,(), Ningjiang Ou1, Jiemei Ye1, Jinqian Deng1   

  1. 1. Department of Neurology, Wuzhou Red Cross Hospital, Wuzhou 543002, China
  • Received:2023-06-09 Online:2024-02-01 Published:2024-03-19
  • Contact: Xuan Chen

Abstract:

Objective

To explore the correlation between polymorphisms of fibrinogen β-chain promoter gene and the stability of carotid atherosclerotic plaques.

Methods

A total of 256 patients with cerebral infarction in Wuzhou Red Cross Hospital were enrolled as the study group between January 2020 and December 2021, including 194 cases in the carotid atherosclerotic plaque group the (plaque group) and 62 cases in the non-plaque group. According to plaque stability, patients in the plaque group were divided into the stable subgroup (91 cases) and the unstable subgroup group (103 cases). A total of 200 healthy controls during the same period were enrolled as the control group. The genotypes of fibrinogen β-chain promoter gene at rs4220, rs6050, rs1800787, rs1800790, and rs1800791 loci were detected by polymerase chain reaction-restriction fragment length polymorphism. The χ2 test was used to compare the difference in gene distribution between the study and the control group, as well as the stable and the unstable subgroup. The binary Logistic regression model was used to screen for risk factors of carotid unstable plaques in patients with cerebral infarction.

Results

The differences in genotypes and alleles of fibrinogen β-chain promoter gene at rs4220, rs6050, rs1800790 and rs1800791 loci, and alleles at rs1800787 locus between the study group and the control group were statistically significant (P<0.05). The frequencies of G allele at rs4220 locus, A allele at rs6050 locus, C allele at rs1800787 locus, G allele at rs1800790 locus, and A allele at rs1800791 locus in the study group were higher than those in the control group (P<0.05). The differences in genotypes and alleles of fibrinogen β-chain promoter gene at rs4220 and rs1800790 loci, and alleles at rs1800791 locus between the plaque group and the non-plaque group were statistically significant (P<0.05). The frequencies of G allele at rs4220 and rs1800790 loci, and A allele at rs1800791 locus in the plaque group were higher than those in the non-plaque group (P<0.05). The differences in alleles at rs4220 locus, genotypes and alleles at rs1800790 and rs1800791 loci between the stable subgroup and the unstable subgroup were statistically significant (P<0.05). The frequencies of G allele at rs4220 and rs1800790 loci, and A allele at rs1800791 locus in the unstable subgroup were higher than those in the stable subgroup (P<0.05). Diabetes mellitus, and G allele at rs4220 and rs1800790 loci were independent risk factors of unstable carotid plaques in patients with cerebral infarction (P<0.05).

Conclusion

G allele of fibrinogen β-chain promoter at rs4220 and rs1800790 loci may increase the instability of carotid plaques and aggravate conditions of patients with cerebral infarction.

Key words: Fibrinogen, Gene polymorphism, Cerebral infarction, Carotid atherosclerotic, Stability

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