Biomarkers.

Background: Cardiovascular disease (CVD) is among the strongest modifiable risk factors for dementia. However, vascular health is multifaceted, and its neurobiological underpinnings are unclear. A recent study (Williams et al.

Biomarkers.

Background: Physical activity (PA) is associated with increased release of brain derived neurotrophic factor (BDNF), a mechanism that may underlie protective effects of PA on cognitive and brain aging. The Met allele of the BDNF Val66Met single-nucleotide polymorphism reduces activity-dependent BDNF release and is associated with increased phosphorylated tau (p-tau181) in dementia populations. We sought to determine whether BDNF Val66Met influences the effects of PA on plasma p-tau181 and cognition in older adults without dementia.

Developing Topics.

Background: Suboptimal cardiovascular health poses a significant risk for dementia, yet biological links between cardiovascular health and brain function are poorly understood. We examined how plasma markers of astrocytic activation (GFAP), neuronal axon breakdown (NfL), and Alzheimer's disease (AD) pathology (pTau181) relate to several behavioral and risk indicators of systemic cardiovascular health in older adults along the AD continuum.

Method: 209 older adults (59% female; 88% clinically normal; 15% amyloid PET+) completed 30-day FitbitTM Flex2 monitoring (average daily steps), blood pressure (BP) and heart rate quantification, and plasma assayed for GFAP, NfL, and pTau181 (Quanterix Simoa).

Smad2 Cooperating with TGIF2 Contributes to EMT and Cancer Stem Cells Properties in Pancreatic Cancer via Co-Targeting SOX2.

The underlying mechanisms between cancer stem cells (CSC) and epithelial-mesenchymal transition (EMT) in pancreatic cancer (PC) remain unclear. In this study, we identified TGIF2 as a target gene of CSC using sncRNA and machine learning. TGIF2 is closely related to the expression of SOX2, EGFR, and E-cadherin, indicating poor prognosis.

Exploring Cognitive and Neuroimaging Profiles of Dementia Subtypes of Individuals with Dementia in the Democratic Republic of Congo.

Objective: The 2024 Alzheimer's Association (AA) research diagnostic criteria for Alzheimer's Disease (AD) considers fluid biomarkers, including promising blood-based biomarkers for detecting AD. This study aims to identify dementia subtypes and their cognitive and neuroimaging profiles in older adults with dementia in the Democratic Republic of Congo (DRC) using biomarkers and clinical data.

Methods: Forty-five individuals with dementia over 65 years old were evaluated using the Community Screening Instrument for Dementia and the informant-based Alzheimer's Questionnaire.