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Glitazone use associated with reduced risk of Parkinson's disease
Author(s) -
Brakedal Brage,
Flønes Irene,
Reiter Simone F.,
Torkildsen Øivind,
Dölle Christian,
Assmus Jörg,
Haugarvoll Kristoffer,
Tzoulis Charalampos
Publication year - 2017
Publication title -
movement disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.352
H-Index - 198
eISSN - 1531-8257
pISSN - 0885-3185
DOI - 10.1002/mds.27128
Subject(s) - medicine , metformin , hazard ratio , incidence (geometry) , diabetes mellitus , type 2 diabetes , medical prescription , disease , proportional hazards model , parkinson's disease , pioglitazone , rosiglitazone , confidence interval , endocrinology , pharmacology , physics , optics
Background Whether antidiabetic glitazone drugs protect against Parkinson's disease remains controversial. Although a single clinical trial showed no evidence of disease modulation, retrospective studies suggest that a disease‐preventing effect may be plausible. The objective of this study was to examine if the use of glitazone drugs is associated with a lower incidence of PD among diabetic patients. Methods We compared the incidence of PD between individuals with diabetes who used glitazones, with or without metformin, and individuals using only metformin in the Norwegian Prescription Database. This database contains all prescription drugs dispensed for the entire Norwegian population. We identified 94,349 metformin users and 8396 glitazone users during a 10‐year period and compared the incidence of PD in the 2 groups using Cox regression survival analysis, with glitazone exposure as a time‐dependent covariate. Results Glitazone use was associated with a significantly lower incidence of PD compared with metformin‐only use (hazard ratio, 0.72; 95% confidence interval, 0.55‐0.94; P = 0.01). Conclusions The use of glitazones is associated with a decreased risk of incident PD in populations with diabetes. Further studies are warranted to confirm and understand the role of glitazones in neurodegeneration. © 2017 The Authors. Movement Disorders published by Wiley Periodicals, Inc. on behalf of International Parkinson and Movement Disorder Society