ArticleBalkan medical journal2025
Tau Pathology in the Medial Temporal Lobe and Neocortex: Implications for Cognitive Unimpaired in Cognitively Unimpaired Older Adults.
Article in Balkan medical journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Are the factors associated with cognitive performance generalizable across cohorts?NeuroImage. Clinical · 2026Article
- Elevated plasma sex hormone-binding globulin (SHBG) is associated with reduced temporal lobe volume and cognitive impairment in individuals with mild cognitive impairment.European geriatric medicine · 2026Article
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Abstract
Background: The accumulation of proteins such as amyloid-beta and tau, which disrupt normal cellular processes, characterizes Alzheimer's disease (AD). Cognitive decline is strongly linked to tau pathology, which initially manifests in the medial temporal lobe (MTL). Aims: To investigated the association between cognitive performance and regional tau accumulation, as measured by positron emission tomography (PET) imaging, in cognitively normal older adults. Understanding this relationship is critical for early intervention before noticeable cognitive decline emerges. Study Design: Retrospective study. Methods: Tau PET scans were conducted on 440 participants enrolled in the anti-amyloid treatment in asymptomatic Alzheimer's (A4) study. The participants, aged 65-85, were cognitively unimpaired and had complete demographic and genetic profiles. Tau levels in the MTL and temporal neocortex (NEO) was quantified using composite metrics. Cognitive function was evaluated using the preclinical Alzheimer's cognitive composite (PACC) and its individual components. Multiple linear regression models were applied to determine the associations between tau burden and cognitive outcomes, including interaction terms to evaluate the moderating roles of sex and apolipoprotein E (APOE)-ε4 genotype. Results: The average participant age was 71.8 years (standard deviation = 4.84), with females comprising 58% of the sample. Greater tau accumulation in both tauMTL and tauNEO regions was significantly associated with lower cognitive scores. Specifically, reduced PACC scores ( Conclusion: Elevated tau deposition in the MTL and NEO is associated with diminished cognitive function, particularly in memory and processing speed domains. Notably, tau accumulation in the MTL showed a strong association with poorer outcomes on memory-related cognitive measures. The limited influence of sex and APOE-ε4 genotype highlights tau pathology as a key contributor to early cognitive decline in preclinical AD.
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