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Correlations Between Mini-Mental State Examination Score, Cerebrospinal Fluid Biomarkers, and Pathology Observed in Brain Biopsies of Patients With Normal-Pressure Hydrocephalus
Uppsala, Sweden.
Umeå University, Faculty of Medicine, Department of Pharmacology and Clinical Neuroscience, Clinical Neuroscience.ORCID iD: 0000-0002-7504-8354
Uppsala, Sweden.
Uppsala, Sweden.
2015 (English)In: Journal of Neuropathology and Experimental Neurology, ISSN 0022-3069, E-ISSN 1554-6578, Vol. 74, no 5, 470-479 p.Article in journal (Refereed) Published
Abstract [en]

Alzheimer disease (AD)-related pathology was assessed in cortical biopsy samples of 111 patients with idiopathic normal-pressure hydrocephalus. Alzheimer disease hallmark lesions-beta-amyloid (A beta) and hyperphosphorylated tau (HPtau)-were observed in 47% of subjects, a percentage consistent with that for whole-brain assessment reported postmortem in unselected cohorts. Higher-immunostained area fraction of AD pathology corresponded with lower preoperative mini-mental state examination scores. Concomitant A beta and HPtau pathology, reminiscent of that observed in patients with AD, was observed in 22% of study subjects. There was a significant correlation between A beta-immunostained area fraction in tissue and A beta 42 (42-amino-acid form of A beta) in cerebrospinal fluid (CSF). Levels of A beta 42 were significantly lower in CSF in subjects with concomitant A beta and HPtau pathology compared with subjects lacking pathology. Moreover, a significant correlation between HPtau-immunostained area fraction and HPtau in CSF was noted. Both HPtau and total tau were significantly higher in CSF in subjects with concomitant A beta and HPtau pathology compared with subjects lacking pathology. The 42-amino-acid form of A beta (A beta 42) and HPtau in CSF were the most significant predictors of the presence of AD pathology in cortical biopsies. Long-term follow-up studies are warranted to assess whether all patients with idiopathic normal-pressure hydrocephalus with AD pathology progress to AD and to determine the pathologic substrate of idiopathic normal-pressure hydrocephalus.

Place, publisher, year, edition, pages
2015. Vol. 74, no 5, 470-479 p.
Keyword [en]
Amyloid beta, Cerebrospinal fluid biomarkers, Cognitive status, Hyperphosphorylated tau, Normal-pressure hydrocephalus
National Category
Social and Clinical Pharmacy
Identifiers
URN: urn:nbn:se:umu:diva-103137DOI: 10.1097/NEN.0000000000000191ISI: 000353056400008PubMedID: 25868149OAI: oai:DiVA.org:umu-103137DiVA: diva2:814881
Available from: 2015-05-28 Created: 2015-05-18 Last updated: 2017-12-04Bibliographically approved

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Laurell, Katarina

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