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Early Recognition of Cognitive Ability and Nutritional Markers for Dementia in Parkinson’s Disease
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Family Medicine.
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Family Medicine.
Umeå University, Faculty of Medicine, Department of Pharmacology and Clinical Neuroscience, Clinical Neuroscience.
Umeå University, Faculty of Medicine, Department of Pharmacology and Clinical Neuroscience, Clinical Neuroscience.
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2018 (English)In: Journal of Aging Research & Clinical Practice, ISSN 2258-8094, Vol. 7, p. 156-162Article in journal (Refereed) Published
Abstract [en]

Background: Cognitive decline and dementia are common non-motor problems in Parkinson’s disease (PD). The underlying aetiology is multifaceted and both chronic and reversible causes for cognitive decline are likely to be present. Malnutrition is frequent in the Parkinson population, both early and late in the disease, and nutritional deficiencies could play a role in some cognitive deficits. Objectives: The objective is to study the association between nutritional status with focus on iron intake and homeostasis, mild cognitive impairment (MCI), and PD dementia (PDD). Setting and Participants: This study included 73 out of 145 patients with PD participating in a population-based study in northern Sweden. Measurements: Registration of nutritional status by laboratory analyses of blood plasma and neuropsychological assessments at time of diagnosis were performed. MCI and PDD were assessed yearly up to ten years after diagnosis. Mini Nutritional Assessments (Full-MNA score) and plasma variables detecting iron homeostasis were compared between patients with MCI and patients with normal cognition (NC). Motor severity was measured using the Unified Parkinson´s disease rating scale III, (UPDRS III) and Hoehn and Yahr (H&Y) staging scale. Cox proportional Hazard model were performed to see if any variables that differed between MCI and NC could predict PDD at follow-up. Results: Patients with MCI at time of diagnosis had lower levels of plasma iron (P-Fe) and albumin (P-Albumin) as well as a lower score on Full-MNA score. Dietary intake of iron was higher in patients with MCI than in patients with NC (p = 0.012). In logistic regression models adjusted for age, sex, and UPDRS III, lower levels of P-Fe (p = 0.025) and P-Albumin (p = 0.011) and higher dietary iron intake (p = 0.019) were associated with MCI at baseline. A Cox regression model with dementia as endpoint revealed that lower levels of P-Fe increase the risk of dementia at follow-up with adjustments for age, sex, UPDRS III, and MCI at baseline (HR 95% CI = 0.87 (0.78-0.98), p = 0.021). Conclusions: Low P-Fe was associated with cognitive disturbance at baseline and predicted dementia up to ten years after diagnosis in patients with PD. Low P-Albumin and malnutrition assessed with Full-MNA score were associated with MCI at baseline but did not predict dementia at follow-up.

Place, publisher, year, edition, pages
Auzeville-Tolosane: SERDI , 2018. Vol. 7, p. 156-162
Keywords [en]
Cognition, dementia, iron deficiency, Parkinson’s disease
National Category
Neurology
Identifiers
URN: urn:nbn:se:umu:diva-159274DOI: 10.14283/jarcp.2018.26OAI: oai:DiVA.org:umu-159274DiVA, id: diva2:1317586
Available from: 2019-05-23 Created: 2019-05-23 Last updated: 2019-05-24Bibliographically approved

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Håglin, LenaLinder, JanForsgren, LarsDomellöf, Magdalena
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