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Increased risk of Alzheimer's disease in patients with psoriasis: a nationwide population-based cohort study.

ABSTRACT: Although the pathogenesis of Alzheimer's disease (AD) is unclear, neuroinflammation appears to play a role in its development. Psoriasis is a chronic inflammatory skin disease that has recently been found to genetically overlap with AD. We aimed to investigate the risk of AD in patients with psoriasis. Subjects with psoriasis (n?=?535,927) and age- and sex-matched controls without psoriasis (at a 5:1 ratio; n?=?2,679,635) who underwent ?3 health examinations between 2008 and 2014 were included, drawn from the Korean National Health Insurance System database. There were 50,209 cases of AD (1.87%) in controls without psoriasis and 11,311 cases (2.11%) in patients with psoriasis, and the median follow-up was 3.35 years. In a multivariable-adjusted model, patients with psoriasis showed a significantly increased risk of AD (hazard ratio, 1.09; 95% CI, 1.07-1.12, p?

SUBMITTER: Kim M

PROVIDER: S-EPMC7160134 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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Increased risk of Alzheimer's disease in patients with psoriasis: a nationwide population-based cohort study.

Kim Miri M Park Hyo Eun HE Lee Si-Hyung SH Han Kyungdo K Lee Ji Hyun JH

Scientific reports 20200415 1

Although the pathogenesis of Alzheimer's disease (AD) is unclear, neuroinflammation appears to play a role in its development. Psoriasis is a chronic inflammatory skin disease that has recently been found to genetically overlap with AD. We aimed to investigate the risk of AD in patients with psoriasis. Subjects with psoriasis (n = 535,927) and age- and sex-matched controls without psoriasis (at a 5:1 ratio; n = 2,679,635) who underwent ≥3 health examinations between 2008 and 2014 were included, ...[more]

PMID: 32296117

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Project description:ObjectivesThe risk of herpes zoster (HZ) between patients with psoriasis receiving and not receiving systemic therapy has received increasing attention. This study investigated the association of psoriasis with the risk of HZ.MethodsWe conducted a population-based retrospective cohort study by using the Taiwan National Health Insurance Research Database. The psoriasis cohort consisted of 4077 patients with newly diagnosed psoriasis between 2000 and 2006. Each patient with psoriasis was frequency-matched with four people without psoriasis, by sex, age and index year. (nonpsoriasis cohort; 16308 subjects). Patients who received systemic therapy were classified as having severe psoriasis, whereas those who did not receive systemic therapy were classified as having mild psoriasis. The Cox proportional hazards regression analysis was conducted to estimate the association between psoriasis and HZ risk.ResultsThe overall incidence density rate of HZ in the psoriasis cohort than in the nonpsoriasis cohort (4.50 vs. 3.44 per 1,000 person-years), with a multivariable Cox proportional hazards model measured adjusted HR of 1.29 [95% confidence interval (CI) = 1.07-1.56]. In additional, compared with the nonpsoriasis cohort, the risk of HZ was higher in the severe psoriasis cohort than in the nonpsoriasis cohort (adjusted hazard ratio [HR], 1.61; 95% confidence interval [CI], 1.15-2.27). The comparison between psoriasis and nonpsoriasis cohorts revealed a greatest magnitude risk of HZ in women (adjusted HR, 1.36; 95% CI, 1.04-1.79), study participants in the age group of 20-39 years (adjusted HR, 1.77; 95% CI, 1.17-2.66), and study participants without any comorbidities (adjusted HR, 1.37; 95% CI, 1.02-1.84).ConclusionsOur results suggest that psoriasis is associated with an increased risk of HZ, which involves differences in sex and age. Although systemic therapy may have a major role in the risk of HZ, the intrinsic factors of psoriasis cannot be excluded.

Dataset Information

Increased risk of Alzheimer's disease in patients with psoriasis: a nationwide population-based cohort study.

Publications

Increased risk of Alzheimer's disease in patients with psoriasis: a nationwide population-based cohort study.

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