Apolipoprotein e4 Is Associated with More Rapid Decline in Odor Identification than in Odor Threshold or Dementia Rating Scale Scores
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| Title: | Apolipoprotein e4 Is Associated with More Rapid Decline in Odor Identification than in Odor Threshold or Dementia Rating Scale Scores |
|---|---|
| Language: | English |
| Authors: | Calhoun-Haney, R., Murphy, C. |
| Source: | Brain and Cognition. Jul 2005 58(2):178-182. |
| Availability: | Elsevier Customer Service Department, 6277 Sea Harbor Drive, Orlando, FL 32887-4800. Tel: 877-839-7126 (Toll Free); Fax: 407-363-1354; e-mail: usjcs@elsevier.com. |
| Peer Reviewed: | N |
| Page Count: | 5 |
| Publication Date: | 2005 |
| Document Type: | Journal Articles Reports - Research |
| Descriptors: | Identification, Risk, Rating Scales, Genetics, Alzheimers Disease, Sensory Experience, Older Adults, At Risk Persons, Dementia |
| DOI: | 10.1016/j.bandc.2004.10.004 |
| ISSN: | 0278-2626 |
| Abstract: | Individuals with the apolipoprotein E e4 genetic risk factor for Alzheimer's disease (AD) show deficits in olfactory function. The purpose of the present study was to examine longitudinally odor identification (odor ID), odor threshold, picture identification, and global cognitive status in allele positive (e4+) and negative (e4-) persons. Participants were initially given the San Diego Odor Identification test, an odor threshold test, and the Dementia Rating Scale (DRS). Participants were re-tested approximately four years later. The results indicate: (1) odor ID declined more rapidly in e4+ than in e4- normal elderly adults; (2) neither group exhibited a significant decline in odor threshold, picture identification or DRS scores. These results suggest that declines in odor identification occur before declines in other measures of dementia in persons at risk for AD because of their APOE allele genetic status. |
| Abstractor: | Author |
| Entry Date: | 2005 |
| Accession Number: | EJ697641 |
| Database: | ERIC |
| Abstract: | Individuals with the apolipoprotein E e4 genetic risk factor for Alzheimer's disease (AD) show deficits in olfactory function. The purpose of the present study was to examine longitudinally odor identification (odor ID), odor threshold, picture identification, and global cognitive status in allele positive (e4+) and negative (e4-) persons. Participants were initially given the San Diego Odor Identification test, an odor threshold test, and the Dementia Rating Scale (DRS). Participants were re-tested approximately four years later. The results indicate: (1) odor ID declined more rapidly in e4+ than in e4- normal elderly adults; (2) neither group exhibited a significant decline in odor threshold, picture identification or DRS scores. These results suggest that declines in odor identification occur before declines in other measures of dementia in persons at risk for AD because of their APOE allele genetic status. |
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| ISSN: | 0278-2626 |
| DOI: | 10.1016/j.bandc.2004.10.004 |
