Background: The aim of this study was: (1) to perform a preliminary study for the validation of ''retronasal olfactory testing'' in the Turkish population to find the best way to evaluate smell and taste disorders in Turkey; (2) to determine if cultural differences make application of the test more difficult; and (3) to determine the flavors that participants had not yet tasted by using the survey method.
Material And Methods: The study included 330 volunteers. Orthonasal olfactory function was assessed psycho-physically using the "Sniffin' Sticks" olfactory test. Retronasal olfaction was assessed using a collection of 20 available food powders applied to the oral cavity. Also, all participants filled in a questionnaire of 50 items about the flavors they had not tasted before.
Results: The mean age of the participants was 26 ± 7.3 years. Participants were divided into 3 groups according to the "Sniffin' Sticks" test results: anosmia, hyposmia, and normosmia groups. Differences in retronasal olfaction scores were significant among the 3 groups.
Conclusions: The retronasal olfactory test appeared to perform well, but modifications of odorized powders or granules and distracters used in the retronasal olfactory test, taking into account Turkish cultural differences, is likely to improve its performance.
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http://dx.doi.org/10.12659/MSM.890071 | DOI Listing |
Alzheimers Dement
December 2024
Department of Neurology, LMU University Hospital, LMU Munich, Munich, Germany.
Background: Lewy body pathology (LBP) is common in autosomal dominant (ADAD) or sporadic Alzheimer disease (sAD). LBP seems to be the most frequent co-pathology in sAD and even in the relatively young ADAD population, where other co-pathologies are rare. Knowledge of neuropathological distribution patterns of LBP and associated survival and genetic characteristics in both AD variants is incomplete.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Columbia University Irving Medical Center, New York, NY, USA.
Background: Previous studies have linked impaired odor identification and global cognition with increased risk of cognitive decline and transition to dementia. However, the reverse question remains: if individuals have intact performance on these measures, are they at reduced risk for transition? We aimed to examine the accuracy of intact odor identification and global cognition for identifying lack of transition to dementia/cognitive decline using the population-based Mayo Clinic Study of Aging and compare their accuracy against and in combination with amyloid PET (Positron Emission Tomography).
Method: n = 647 participants age≥55 without dementia completed at baseline the Brief Smell Identification Test (BSIT; 'Intact' = 9-12), Blessed Information-Memory-Concentration Test (BIMCT; 'Intact' = 18-20,), and amyloid PET ('Normal/Intact' SUVR<1.
Alzheimers Dement
December 2024
University of Wisconsin-Madison, Madison, WI, USA.
Background: Over the past decades, many risk factors for dementia have been identified including sensory and motor functions. Established risk scores to predict onset of cognitive impairment and/or dementia (e.g.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Concordia University, Montreal, QC, Canada.
Background: Sensory loss in hearing, vision, and olfaction are highly prevalent in older adults and are each associated with a higher risk of developing dementia. This study sought to identify the extent to which these sensory factors are associated with alterations in brain function and structure older adults with or at risk for dementia. We examined groups who range from relatively low risk (those with normal cognition and no cognitive complaints (NC)), to those with higher risk, namely individuals with subjective reports of cognitive decline (SCD) but normal cognition and those with mild cognitive impairment (MCI).
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Memory & Aging Center, Department of Neurology, University of California in San Francisco, San Francisco, CA, USA.
Background: Although frontotemporal dementia (FTD) with right anterior temporal lobe (RATL) predominance has been recognized as a separate FTD subtype, a uniform description of the syndrome is still missing. This multicenter study, led by an international working group (IWG), aims to establish a cohesive clinical phenotype and lay the groundwork for consensus on terminology and diagnostic standards.
Method: Retrospective clinical data were systematically collected across 18 dementia centers.
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