Inflammatory bowel disease increases the risk of Parkinson's disease: A Danish nationwide cohort study 1977-2014

TY - JOUR

T1 - Inflammatory bowel disease increases the risk of Parkinson's disease

T2 - A Danish nationwide cohort study 1977-2014

AU - Villumsen, Marie

AU - Aznar, Susana

AU - Pakkenberg, Bente

AU - Jess, Tine

AU - Brudek, Tomasz

PY - 2019

Y1 - 2019

N2 - Objective: Intestinal inflammation has been suggested to play a role in development of Parkinson's disease (PD) and multiple system atrophy (MSA). To test the hypothesis that IBD is associated with risk of PD and MSA, we performed a nationwide population-based cohort study. Design: The cohort consisted of all individuals diagnosed with IBD in Denmark during 1977-2014 (n=76 477) and non-IBD individuals from the general population, who were comparable in terms of gender, age and vital status (n=7 548 259). All cohort members were followed from IBD diagnosis/index date to occurrence of PD and MSA (according to the Danish National Patient Register). Results: Patients with IBD had a 22% increased risk of PD as compared with non-IBD individuals (HR=1.22; 95% CI 1.09 to 1.35). The increased risk was present independently of age at IBD diagnosis, gender or length of follow-up. The overall incidence of MSA was low in our study, and the regression analysis suggested a tendency towards higher risk of developing MSA in patients with IBD as compared with non-IBD individuals (HR=1.41; 95% CI 0.82 to 2.44). Estimates were similar for women and men. The increased risk of parkinsonism was significantly higher among patients with UC (HR=1.35; 95% CI 1.20 to 1.52) and not significantly different among patients with Crohn's disease (HR=1.12; 95% CI 0.89 to 1.40). Conclusions: This nationwide, unselected, cohort study shows a significant association between IBD and later occurrence of PD, which is consistent with recent basic scientific findings of a potential role of GI inflammation in development of parkinsonian disorders.

AB - Objective: Intestinal inflammation has been suggested to play a role in development of Parkinson's disease (PD) and multiple system atrophy (MSA). To test the hypothesis that IBD is associated with risk of PD and MSA, we performed a nationwide population-based cohort study. Design: The cohort consisted of all individuals diagnosed with IBD in Denmark during 1977-2014 (n=76 477) and non-IBD individuals from the general population, who were comparable in terms of gender, age and vital status (n=7 548 259). All cohort members were followed from IBD diagnosis/index date to occurrence of PD and MSA (according to the Danish National Patient Register). Results: Patients with IBD had a 22% increased risk of PD as compared with non-IBD individuals (HR=1.22; 95% CI 1.09 to 1.35). The increased risk was present independently of age at IBD diagnosis, gender or length of follow-up. The overall incidence of MSA was low in our study, and the regression analysis suggested a tendency towards higher risk of developing MSA in patients with IBD as compared with non-IBD individuals (HR=1.41; 95% CI 0.82 to 2.44). Estimates were similar for women and men. The increased risk of parkinsonism was significantly higher among patients with UC (HR=1.35; 95% CI 1.20 to 1.52) and not significantly different among patients with Crohn's disease (HR=1.12; 95% CI 0.89 to 1.40). Conclusions: This nationwide, unselected, cohort study shows a significant association between IBD and later occurrence of PD, which is consistent with recent basic scientific findings of a potential role of GI inflammation in development of parkinsonian disorders.

KW - enteric nervous system

KW - hazard ratio

KW - inflammation

KW - inflammatory bowel disease

KW - Parkinson's disease

KW - parkinsonism

U2 - 10.1136/gutjnl-2017-315666

DO - 10.1136/gutjnl-2017-315666

M3 - Journal article

C2 - 29785965

AN - SCOPUS:85047984367

SN - 0017-5749

VL - 68

SP - 18

EP - 24

JO - Gut

JF - Gut

IS - 1

ER -