In Eukaryotes, long-distance and rapid signal transmission is required in order to be able to react fast and flexibly to external stimuli. This long-distance signal transmission cannot take place by diffusion of signal molecules from the site of perception to the target tissue, as their speed is insufficient. Therefore, for adequate stimulus transmission, plants as well as animals make use of electrical signal transmission, as this can quickly cover long distances. This update summarises the most important advances in plant electrical signal transduction with a focus on the carnivorous Venus flytrap. It highlights the different types of electrical signals, examines their underlying ion fluxes and summarises the carnivorous processes downstream of the electrical signals.
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http://dx.doi.org/10.1093/plphys/kiab297 | DOI Listing |
Chaos
January 2025
Department of Physics, Isfahan University of Technology, Isfahan 84156-83111, Iran.
We examine the impact of the time delay on two coupled massive oscillators within the second-order Kuramoto model, which is relevant to the operations of real-world networks that rely on signal transmission speed constraints. Our analytical and numerical exploration shows that time delay can cause multi-stability within phase-locked solutions, and the stability of these solutions decreases as the inertia increases. In addition to phase-locked solutions, we discovered non-phase-locked solutions that exhibit periodic and chaotic behaviors, depending on the amount of inertia and time delay.
View Article and Find Full Text PDFPLoS Comput Biol
January 2025
Department of Mechanical Engineering & Materials Science, Washington University, St. Louis, Missouri, United States of America.
Cell collectives, like other motile entities, generate and use forces to move forward. Here, we ask whether environmental configurations alter this proportional force-speed relationship, since aligned extracellular matrix fibers are known to cause directed migration. We show that aligned fibers serve as active conduits for spatial propagation of cellular mechanotransduction through matrix exoskeleton, leading to efficient directed collective cell migration.
View Article and Find Full Text PDFBackground: Existing work suggested that AD pathology can affect the direction and intensity of information signaling in functional brain regions. The present study evaluates the time-delayed effective connectivity of normal controls (NC) and patients with mild cognitive impairment (MCI) under motion-detection tasks and explores identification of possible anomalies and deviated patterns in effective connectivity associated with AD pathology.
Method: Our research focuses on task-based EEG (64-channel), where participants were asked to perform a motion direction discrimination task.
ACS Sens
January 2025
State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology; Guangdong Province Key Laboratory of Display Material and Technology, Sun Yat-Sen University, Guangzhou 510006, China.
Gouty arthritis is one of the most common forms of inflammatory arthritis and has brought a significant burden on patients and society. Current strategies for managing gout primarily focus on long-term urate-lowering therapy. With the rapid advancement of point-of-care testing (POCT) technology, continuous monitoring of gout-related biomarkers like uric acid (UA) or inflammatory cytokines can provide rapid and personalized diagnosis for gout management.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.
Background: Purinergic signaling is vital in various cellular processes like neuroinflammation, synaptic transmission, Aβ clearance, and tau phosphorylation regulation. This study aims to examine if SNPs in purinergic signaling genes are associated to A/T(N) status biomarkers in Alzheimer's Disease through Genome Wide Association Studies.
Method: The SNPRelate package was used to analyze SNPs in genes related to purinergic signaling and A/T(N) markers.
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