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Increasing hub disruption parallels dementia severity in autosomal dominant Alzheimer's disease.
Netw Neurosci
December 2024
Department of Radiology, Washington University in St. Louis, St. Louis, MO, USA.
Hub regions in the brain, recognized for their roles in ensuring efficient information transfer, are vulnerable to pathological alterations in neurodegenerative conditions, including Alzheimer's disease (AD). Computational simulations and animal experiments have hinted at the theory of activity-dependent degeneration as the cause of this hub vulnerability. However, two critical issues remain unresolved.
View Article and Find Full Text PDFMembrane nanodomains to shape plant cellular functions and signaling.
New Phytol
February 2025
IPSiM, Univ Montpellier, CNRS, INRAE, Institut Agro, Montpellier, 34000, France.
Plasma membrane (PM) nanodomains have emerged as pivotal elements in the regulation of plant cellular functions and signal transduction. These nanoscale membrane regions, enriched in specific lipids and proteins, behave as regulatory/signaling hubs spatially and temporally coordinating critical cellular functions. In this review, we first examine the mechanisms underlying the formation and maintenance of PM nanodomains in plant cells, highlighting the roles of PM lipid composition, protein oligomerization and interactions with cytoskeletal and cell wall components.
View Article and Find Full Text PDFStepwise pathways from the olfactory cortex to central hub regions in the human brain.
Hum Brain Mapp
December 2024
Department of Psychology, Stockholm University, Stockholm, Sweden.
The human brain is organized as a hierarchical global network. Functional connectivity research reveals that sensory cortices are connected to corresponding association cortices via a series of intermediate nodes linked by synchronous neural activity. These sensory pathways and relay stations converge onto central cortical hubs such as the default-mode network (DMN).
View Article and Find Full Text PDFPerceptual learning and neural correlates of virtual navigation in subjective cognitive decline: A pilot study.
iScience
December 2024
The Baruch Ivcher Institute for Brain, Cognition, and Technology, Baruch Ivcher School of Psychology, Reichman University, Herzliya, Israel.
Spatial navigation deficits in age-related diseases involve brain changes affecting spatial memory and verbal cognition. Studies in blind and blindfolded individuals show that multisensory training can induce neuroplasticity through visual cortex recruitment. This proof-of-concept study introduces a digital navigation training protocol, integrating egocentric and allocentric strategies with multisensory stimulation and visual masking to enhance spatial cognition and brain connectivity in 17 individuals (mean age 57.
View Article and Find Full Text PDFLeaf angle regulation toward a maize smart canopy.
Plant J
December 2024
Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Agriculture, Yangzhou University, Yangzhou, 225009, China.
Dense planting of single-cross hybrids contributes to maize yield increase over the past decades. Leaf angle, an important agronomic trait relevant to planting density, plays a fundamental role in light penetration into the canopy and photosynthetic efficiency. Leaf angle is a key parameter of plant architecture in the concept of smart canopy.
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