We recently implicated a cluster of nine single nucleotide polymorphisms from seven cholesterol-related genes in the risk of Alzheimer's disease (AD) in a European cohort, and we proposed calculating an aggregate cholesterol-related genetic score (CREGS) to characterize a person's risk. In a separate study, we found that apolipoprotein E (APOE) epsilon4 gene dose, an established AD risk factor, was correlated with fluorodeoxyglucose (FDG) positron emission tomography (PET) measurements of hypometabolism in AD-affected brain regions in a cognitively normal American cohort, and we proposed using PET as a presymptomatic endophenotype to help assess putative modifiers of AD risk. Thus, the objective in the present study is to determine whether CREGS is related to PET measurements of hypometabolism in AD-affected brain regions. DNA and PET data from 141 cognitively normal late middle-aged APOE epsilon4 homozygotes, heterozygotes and noncarriers were analyzed to evaluate the relationship between CREGS and regional PET measurements. Cholesterol-related genetic risk scores were associated with hypometabolism in AD-affected brain regions, even when controlling for the effects of APOE epsilon4 gene dose. The results support the role of cholesterol-related genes in the predisposition to AD and support the value of neuroimaging in the presymptomatic assessment of putative modifiers of AD risk.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2441925 | PMC |
| http://dx.doi.org/10.1016/j.neuroimage.2007.12.066 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Conserved multisensory integration of social cues in the thalamus.
iScience
January 2025
Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland.
The recognition of conspecifics, animals of the same species, and keeping track of changes in the social environment is essential to all animals. While molecules, circuits, and brain regions that control social behaviors across species are studied in-depth, the neural mechanisms that enable the recognition of social cues are largely obscure. Recent evidence suggests that social cues across sensory modalities converge in a thalamic area conserved across vertebrates.
View Article and Find Full Text PDFInhibition of hippocampal interleukin-6 receptor-evoked signalling normalises long-term potentiation in dystrophin-deficient mice.
Brain Behav Immun Health
February 2025
Department of Physiology, School of Medicine, University College Cork, Western Road, Cork, Ireland.
Duchenne muscular dystrophy (DMD), an X-linked neuromuscular disorder, characterised by progressive immobility, chronic inflammation and premature death, is caused by the loss of the mechano-transducing signalling molecule, dystrophin. In non-contracting cells, such as neurons, dystrophin is likely to have a functional role in synaptic plasticity, anchoring post-synaptic receptors. Dystrophin-expressing hippocampal neurons are key to cognitive functions such as emotions, learning and the consolidation of memories.
View Article and Find Full Text PDFPapillary Tumor of the Pineal Region Treated With Surgery and Postoperative Radiotherapy: A Case Report.
Cureus
January 2025
Radiation Oncology, Centre Hospitalier Affilié Universitaire Régional, Trois-Rivieres, CAN.
Papillary tumors of the pineal region (PTPR) are extremely rare malignancies that make up less than 0.1% of primary brain tumors. They are usually treated with surgery and adjuvant tumor bed radiotherapy (RT).
View Article and Find Full Text PDFAltered static and dynamic spontaneous brain activity in patients with dysthyroid optic neuropathy: a resting-state fMRI study.
Front Neurosci
January 2025
Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Purpose: To investigate static and dynamic brain functional alterations in dysthyroid optic neuropathy (DON) using resting-state functional MRI (rs-fMRI) with the amplitude of low-frequency fluctuation (ALFF) and regional homogeneity (ReHo).
Materials And Methods: Fifty-seven thyroid-associated ophthalmopathy (TAO) patients (23 DON and 34 non-DON) and 27 healthy controls (HCs) underwent rs-fMRI scans. Static and dynamic ALFF (sALFF and dALFF) and ReHo (sReHo and dReHo) values were compared between groups.
The effect of deep magnetic stimulation on the cardiac-brain axis post-sleep deprivation: a pilot study.
Front Neurosci
January 2025
Department of Evidence-Based Medicine and Social Medicine, School of Public Health, Chengdu Medical College, Chengdu, Sichuan, China.
Introduction: Sleep deprivation (SD) significantly disrupts the homeostasis of the cardiac-brain axis, yet the neuromodulation effects of deep magnetic stimulation (DMS), a non-invasive and safe method, remain poorly understood.
Methods: Sixty healthy adult males were recruited for a 36-h SD study, they were assigned to the DMS group or the control group according to their individual willing. All individuals underwent heart sound measurements and functional magnetic resonance imaging scans at the experiment's onset and terminal points.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!