A characteristic of olfactory function in four types of dementia and non‐dementia subjects using smell identification test.

Background: For those outpatients who were consulted for memory loss, the Japanese version of University of Pennsylvania Smell Identification Test (UPSIT‐J) was performed to examine olfactory function. In the same way, the revised version of Hasegawa Dementia Scale, Mini Mental State Examination, Cl...

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Publicado en:Psychogeriatrics Vol. 24; no. 1; pp. 25 - 35
Autores principales: Yamashita, Yuuji, Shoji, Yoshihisa, Yanagimoto, Hiroko, Morita, Kiichiro, Kodama, Hideya, Tsuruhisa, Yuuki, Ookawa, Junji
Formato: research tables/charts Journal Article
Publicado: Wiley-Blackwell Jan2024
Acceso en línea:Ver este registro en EBSCOhost
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      dt: Jan2024
      vid: 24
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      pub: Wiley-Blackwell
      place: Malden, Massachusetts
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        10.1111/psyg.13036
        174563633
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        atl: A characteristic of olfactory function in four types of dementia and non‐dementia subjects using smell identification test.
      aug:
        au:
          Yamashita, Yuuji
          Shoji, Yoshihisa
          Yanagimoto, Hiroko
          Morita, Kiichiro
          Kodama, Hideya
          Tsuruhisa, Yuuki
          Ookawa, Junji
        affil: Cognitive and Molecular Research Institute of Brain Diseases, Kurume University, Kurume, Japan
      sug:
        subj:
          Dementia Classification
          Smell Evaluation
          Smell Physiology
          Dementia Diagnosis
          Early Diagnosis
          Dementia Patients
          Human
          Funding Source
          Alzheimer's Disease
          Dementia, Vascular
          Lewy Body Disease
          Mixed Dementias
          Scales
          Correlation Coefficient
          Descriptive Statistics
          Aged
          Aged, 80 and Over
          Odors
          Aged: 65+ years
          Aged, 80 & over
      ab: Background: For those outpatients who were consulted for memory loss, the Japanese version of University of Pennsylvania Smell Identification Test (UPSIT‐J) was performed to examine olfactory function. In the same way, the revised version of Hasegawa Dementia Scale, Mini Mental State Examination, Clinical Dementia Rating and brain magnetic resonance imaging were used to investigate the cognitive function. In the present study, we evaluated the olfactory function of elderly subjects, including those with dementia, by means of UPSIT‐J and we examined their characteristics. Methods: The characteristics of dementia as Alzheimer type group (AD.G), mixed type group (MixD.G), vascular type group (VaD.G), dementia with Lewy bodies group (DLB.G) and the groups which had no dementia as low score group (LS.G), high score group (HS.G), and healthy group (H.G), were examined. Results: The numbers of olfactory discriminating scores (nODS) were significantly lower in all the dementia groups than in all the LS.G, HS.G and the H.G. No significant difference was observed in nODS between AD.G and DLB.G. The rate of nODS with less than five scores were as follows: AD.G (80.1%), MixD.G (91.5%), VaD.G (63.1%), DLB.G (89.6%), LS.G (50.8%), HS.G (18.6%), H.G (15.6%). A significant positive correlation was found between nODS and Hasegawa Dementia Scale and Mini Mental State Examination scores (r = 0.567, r = 0.532, respectively), which was significant negatively correlated for Clinical Dementia Rating (r = −0.578). A significant negative correlation was observed between nODS and Z score of voxel‐based specific regional analysis for Z score of Alzheimer's disease (VSRAD) (r = 0.463). Conclusion: nODS showed a significant correlation between cognitive function tests and brain atrophy level. These results indicate that UPSIT‐J is considered a psycho‐physiological index useful for the diagnosis and early detection of dementia.
      pubtype: Academic Journal
      doctype:
        research
        tables/charts
        Journal Article
      ougenre: Article
    language: English
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