Abstract:
BACKGROUND:Polypharmacy has been associated with worse cognitive performance, but its impact on mild cognitive impairment (MCI) progression to dementia has not been explored. AIMS:The aims of the study were to investigate the association between multidrug regimens and MCI progression, and the possible mediation of drug-drug interactions and drugs' anticholinergic effect in such association. METHODS:This work included 342 older adults with MCI, who were involved in an Italian multicenter population-based cohort study. Information on drugs taken was derived from general practitioners' records and data on drug-drug interactions and anticholinergic burden [evaluated through the Anticholinergic Cognitive Burden and the Anticholinergic Risk Scale (ARS)] were extracted. Multinomial logistic regressions assessed the associations between mild polypharmacy (≥ 3 drugs/day), drug-drug interactions, and anticholinergic burden with MCI changes after 1-year follow-up. Mediation analysis evaluated potential mediators of that relationship. RESULTS:Approximately, 50% of participants took ≥ 3 drugs/day. During the follow-up, 4.1% of MCI patients progressed to dementia. The odds of developing dementia was sixfold higher in those who took ≥ 3drugs/day (OR = 6.04, 95% CI 1.19-30.74), eightfold higher in those with ≥ 1 drug-drug interaction/s (OR = 8.45, 95% CI 1.70-41.91), and fivefold higher in those with ARS ≥ 1 (OR = 5.10, 95% CI 1.04-24.93). Drug-drug interactions mediated 70.4% of the association between medication number and MCI progression to dementia (p = 0.07). DISCUSSION:Our study suggests that even mild polypharmacy may increase the risk of MCI progression to dementia, probably due to the presence of drug-drug interactions, which often occur in multidrug regimens. CONCLUSIONS:Older people require careful management of pharmacological treatments, with special attention to drug-drug interactions and drug-related anticholinergic effects.
journal_name
Aging Clin Exp Resjournal_title
Aging clinical and experimental researchauthors
Trevisan C,Limongi F,Siviero P,Noale M,Cignarella A,Manzato E,Sergi G,Maggi Sdoi
10.1007/s40520-019-01420-2subject
Has Abstractpub_date
2019-11-22 00:00:00eissn
1594-0667issn
1720-8319pii
10.1007/s40520-019-01420-2pub_type
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journal_title:Aging clinical and experimental research
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journal_title:Aging clinical and experimental research
pub_type: 杂志文章,meta分析
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journal_title:Aging clinical and experimental research
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journal_title:Aging clinical and experimental research
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