Heyer EJ, Mergeche JL, Ward JT, Malone HR, Kellner C, Bruce SS, Connolly ES. Phosphodiesterase 4D single-nucleotide polymorphism 83 and cognitive dysfunction in carotid endarterectomy patients.
Neurosurgery 2013;
73:791-6; discussion 796. [PMID:
23863764 PMCID:
PMC3935380 DOI:
10.1227/neu.0000000000000085]
[Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND
Phosphodiesterase 4D (PDE4D), through the regulation of cyclic AMP, modulates inflammation and other processes that affect atherosclerosis and stroke. A PDE4D polymorphism, single-nucleotide polymorphism (SNP) 83 (rs966221), is associated with ischemic stroke. The association of SNP 83 with postoperative cognitive dysfunction has never been investigated.
OBJECTIVE
To determine whether SNP 83 is associated with cognitive dysfunction 1 day and 1 month following carotid endarterectomy (CEA).
METHODS
Three hundred fourteen patients with high-grade carotid stenosis scheduled for CEA consented to participate in this single-center cohort study of cognitive dysfunction.
RESULTS
Patients with the C/C genotype of SNP 83 exhibited significantly more cognitive dysfunction at 1 day (29.7%) than the C/T (15.8%, P = .008) and T/T (12.7%, P = .01) genotypes. In a multivariate logistic regression model, C/T and T/T genotypes were both associated with significantly decreased odds of cognitive dysfunction compared with the C/C genotype (odds ratio, 0.45 [0.24-0.83], P = .01 and odds ratio, 0.33 [0.12-0.77], P = .02). There were no significant associations at 1 month.
CONCLUSION
The C/C genotype of SNP 83 is significantly associated with the highest incidence of cognitive dysfunction 1 day following CEA in comparison with the C/T and T/T genotypes. This PDE4D genotype may lead to accelerated cyclic AMP degradation and subsequently elevated inflammation 1 day after CEA. These observations, in conjunction with previous studies, suggest that elevated inflammatory states may be partially responsible for the development of cognitive dysfunction after CEA, but more investigation is required.
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