Nociceptive stimuli are processed by the brain into an unpleasant sensation. Two new studies highlight an important role of the claustrum in the processing of pain-related information.
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| http://dx.doi.org/10.1016/j.cub.2024.03.037 | DOI Listing |
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Aβ42 biomarker linked to insula, striatum, thalamus and claustrum in dementia with Lewy bodies.
Geroscience
January 2025
ICube Laboratory UMR-7357 and FMTS (Fédération de Médecine Translationnelle de Strasbourg), IMIS Team and IRIS Platform, University of Strasbourg and CNRS, Strasbourg, France.
The differential mechanisms between proteinopathies and neurodegeneration in Alzheimer's disease (AD) and dementia with Lewy bodies (DLB) remain unclear. To address this issue, we conducted a voxel-based morphometry and cerebrospinal fluid biomarker (α-synuclein, Aβ42, t-Tau and p-Tau) level correlation study in patients with DLB, AD and mixed cases (AD + DLB). Cerebrospinal fluid samples obtained by lumbar puncture and whole-brain T1-weighted images were collected in the AlphaLewyMA cohort.
View Article and Find Full Text PDFSpecification of claustro-amygdalar and palaeocortical neurons and circuits.
Nature
January 2025
Department of Neuroscience, Yale School of Medicine, New Haven, CT, USA.
The ventrolateral pallial (VLp) excitatory neurons in the claustro-amygdalar complex and piriform cortex (PIR; which forms part of the palaeocortex) form reciprocal connections with the prefrontal cortex (PFC), integrating cognitive and sensory information that results in adaptive behaviours. Early-life disruptions in these circuits are linked to neuropsychiatric disorders, highlighting the importance of understanding their development. Here we reveal that the transcription factors SOX4, SOX11 and TFAP2D have a pivotal role in the development, identity and PFC connectivity of these excitatory neurons.
View Article and Find Full Text PDFInvestigating resting-state functional connectivity changes within procedural memory network across neuropsychiatric disorders using fMRI.
BMC Med Imaging
January 2025
Department of Physiology, Faculty of Medicine, AJA University of Medical Science, Tehran, Iran.
Background: Cognitive networks impairments are common in neuropsychiatric disorders like Attention Deficit Hyperactivity Disorder (ADHD), bipolar disorder (BD), and schizophrenia (SZ). While previous research has focused on specific brain regions, the role of the procedural memory as a type of long-term memory to examine cognitive networks impairments in these disorders remains unclear. This study investigates alterations in resting-state functional connectivity (rs-FC) within the procedural memory network to explore brain function associated with cognitive networks in patients with these disorders.
View Article and Find Full Text PDFSerotonin Inhibition of Claustrum Projection Neurons: Ionic Mechanism, Receptor Subtypes and Consequences for Claustrum Computation.
Cells
November 2024
Neuroscience & Mental Health Program, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore.
The claustrum is a small but densely interconnected brain structure that is innervated by axons containing serotonin (5-HT), a neuromodulator that has been implicated in control of sleep and in the actions of psychedelic drugs. However, little is known about how 5-HT influences the claustrum. We have combined whole-cell patch-clamp measurements of ionic currents, flash photolysis, and receptor pharmacology to characterize the 5-HT responses of individual claustral projection neurons (PNs) in mouse brain slices.
View Article and Find Full Text PDFClaustrum volumes are lower in schizophrenia and mediate patients' attentional deficits.
Biol Psychiatry Cogn Neurosci Neuroimaging
November 2024
Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany; TUM-NIC Neuroimaging Center, School of Medicine, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany; Department of Psychiatry, School of Medicine, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany.
Background: While the last decade of extensive research revealed the prominent role of the claustrum for mammalian forebrain organization, i.e., widely distributed claustral-cortical circuits coordinate basic cognitive functions such as attention, it is poorly understood whether the claustrum is relevant for schizophrenia and related cognitive symptoms.
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