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SEEG seizure onset patterns in mesial temporal lobe epilepsy: A cohort study with 76 patients.
Neurophysiol Clin
January 2025
Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, PR China. Electronic address:
Objectives: In the present study with a large cohort, we aimed to characterize intracerebral seizure onset patterns (SOP) of mesial temporal lobe epilepsy (mTLE), with or without hippocampal sclerosis (HS) as identified via magnetic resonance imaging (MRI).
Methods: We retrospectively analyzed 255 seizures of 76 consecutive patients with mTLE explored by stereoelectroencephalography (SEEG), including HS-mTLE (n = 52) and non-HS- mTLE (n = 24). Relevant results were obtained by a combination of spectral analysis and manual review.
Basic Science and Pathogenesis.
Alzheimers Dement
December 2024
College of Public Health, University of Kentucky, Lexington, KY, USA.
Background: Brain arteriolosclerosis (B-ASC) is a pathologic hallmark characterized by dysmorphic brain arteriolar wall thickening. B-ASC is a common finding at autopsy in aged persons - some degree of B-ASC is seen in >80% of brains beyond age 80 years - and is associated with cognitive impairment. Hypertension and diabetes are widely recognized as risk factors for B-ASC.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
University of Michigan, Ann Arbor, MI, USA.
Background: Inhibitory interneurons normally regulate neural networks underlying memory and cognition, but are disrupted in Alzheimer's disease. Proper interneuron activity reduces amyloid-beta, whereas hyperexcitability elevates amyloid levels. Still, the underlying pathologic processes mediating interneuron dysfunction remain unknown.
View Article and Find Full Text PDFBackground: MicroRNAs (miRNAs) are important post-transcriptional regulators of gene expression, but we have limited insight into their role in age-related cerebral pathologies. Here, we investigated the association between miRNAs and nine age-related cerebral pathologies in participants of the ROS/MAP cohorts.
Method: MiRNA sequencing was performed on samples from the dorsolateral prefrontal cortex of 617 brain donors from participants of the ROS/MAP cohorts.
Background: Inclusions of TAR DNA binding protein of 43kDa (TDP-43) constitute the main characteristic pathology in the majority (∼97%) of amyotrophic lateral sclerosis (ALS) cases and approximately 50% of patients with frontotemporal lobar degeneration (FTLD). TDP-43 is a nuclear RNA binding protein; however, in disease, it becomes hyperphosphorylated and/or insoluble, hindering its nuclear function in maintaining RNA homeostasis. Importantly, the incidence of TDP-43 proteinopathy extends to aging brains (LATE) and may be concomitant with Alzheimer's disease (AD) neuropathological changes (LATE/AD) in up to 70% of AD patients.
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