Academic Journal
Olfactory Dysfunction Is Associated with Cerebral Amyloid Deposition and Cognitive Function in the Trajectory of Alzheimer’s Disease
| Title: | Olfactory Dysfunction Is Associated with Cerebral Amyloid Deposition and Cognitive Function in the Trajectory of Alzheimer’s Disease |
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| Authors: | Sheng-Min Wang, Dong Woo Kang, Yoo Hyun Um, Sunghwan Kim, Chang Uk Lee, Hyun Kook Lim |
| Source: | Biomolecules, Vol 13, Iss 9, p 1336 (2023) |
| Publisher Information: | MDPI AG, 2023. |
| Publication Year: | 2023 |
| Collection: | LCC:Microbiology |
| Subject Terms: | olfaction, Alzheimer’s disease, mild cognitive impairment, beta-amyloid, association, Microbiology, QR1-502 |
| More Details: | Olfactory dysfunction is consistently observed in individuals with Alzheimer’s disease (AD), but its association with beta-amyloid (Aβ) deposition remains unclear. This study aimed to investigate the relationship among olfactory function, cerebral Aβ deposition, and neuropsychological profiles in individuals with no cognitive impairment (NCI), mild cognitive impairment (MCI), and AD dementia. A total of 164 participants were included, and olfactory function was assessed using the brief smell identification test (B-SIT). Cerebral Aβ deposition was measured using [18F]-flutemetamol PET imaging (A-PET). The results show a significant group difference in olfactory function, with the highest impairment observed in the Aβ-positive MCI and AD dementia groups, and the impairment was the lowest in Aβ-negative NCI. Olfactory dysfunction was positively associated with cognitive impairments across multiple domains. Furthermore, individuals with Aβ deposition had lower olfactory function compared to those without Aβ, even within the same neuropsychological stage. The association between olfactory dysfunction and Aβ deposition was observed globally and in specific cortical regions. These findings suggest that olfactory dysfunction is associated with both cognitive function and cerebral Aβ pathology in the trajectory of AD. Olfactory deficits may serve as an additional marker for disease progression and contribute to understanding the underlying mechanisms of AD. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 13091336 2218-273X |
| Relation: | https://www.mdpi.com/2218-273X/13/9/1336; https://doaj.org/toc/2218-273X |
| DOI: | 10.3390/biom13091336 |
| Access URL: | https://doaj.org/article/65c137ffda7541c69671cd99676c3a8c |
| Accession Number: | edsdoj.65c137ffda7541c69671cd99676c3a8c |
| Database: | Directory of Open Access Journals |
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| ISSN: | 13091336 2218273X |
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| DOI: | 10.3390/biom13091336 |
| Published in: | Biomolecules |
| Language: | English |