Results 61 to 70 of about 1,903 (160)

Subregion‐specific perineuronal net remodelling in the dorsal hippocampus drives vulnerability and resilience to chronic stress: The role of venlafaxine treatment

British Journal of Pharmacology, EarlyView.
Background and Purpose Neuronal plasticity enables the brain to adapt to internal and external demands by dynamically regulating synaptic connectivity and emotional circuitry. Impaired neuroplasticity represents a core pathophysiological framework of major depressive disorder, one of the leading causes of disability worldwide. Chronic stress is a major
Paola Brivio, Arianna Palumbo, Maria Teresa Gallo, Filippo Umberto Tancredi Veronesi, Giorgia Cortinovis, Piotr Gruca, Magdalena Lason, Ewa Litwa, Dominika Biala, Fabio Fumagalli, Mariusz Papp, Francesca Calabrese   +11 more
wiley   +1 more source

Therapeutic access points: The roles of circumventricular organs in drug delivery and metabolic regulation

British Journal of Pharmacology, EarlyView.
The current obesity drug landscape, dominated by GLP‐1 receptor agonists and emerging multi‐agonist therapies, has reinforced that long‐term weight loss is achieved in large part through central mechanisms that suppress appetite and reshape energy balance.
Ines Martinez‐Corral, Nicholas Monaco, Daniel I. Brierley, Monica Imbernon   +3 more
wiley   +1 more source

Dynamics of perineuronal nets over amphibian metamorphosis

Journal of Comparative Neurology, 2020
Abstract Extracellular matrix materials known as perineuronal nets (PNNs) have been shown to have remarkable consequences for the maturation of neural circuits and stabilization of behavior. It has been proposed that, due to the possibly long‐lived biochemical nature of their components, PNNs may be an important substrate by which ...
Jacob A. Edwards, Makayla Risch, Kim L. Hoke   +2 more
openaire   +3 more sources

Molecular Mechanisms of L1 and NCAM Adhesion Molecules in Synaptic Pruning, Plasticity, and Stabilization

Frontiers in Cell and Developmental Biology, 2021
Mammalian brain circuits are wired by dynamic formation and remodeling during development to produce a balance of excitatory and inhibitory synapses. Synaptic regulation is mediated by a complex network of proteins including immunoglobulin (Ig)- class ...
Bryce W. Duncan, Kelsey E. Murphy, Patricia F. Maness   +2 more
doaj   +1 more source

Characterization of dermatan sulfate and chondroitin sulfate profiles during brain regeneration in Styela plicata

The FEBS Journal, EarlyView.
Adult ascidians are capable of regenerating their entire brains following injury, and glycosaminoglycans have been shown to either promote or inhibit neuritogenesis. In this study, dermatan 2,6‐disulfate (D2,6S) was identified as the predominant complex carbohydrate in the ascidian brain.
Taynan Motta Portal, Samara de Oliveira Pimentel, Bruno da Costa Rodrigues, Mauro Sérgio Gonçalves Pavão, Rodrigo Nunes da Fonseca, Cintia Monteiro de Barros   +5 more
wiley   +1 more source

How Stress Influences the Dynamic Plasticity of the Brain’s Extracellular Matrix

Frontiers in Cellular Neuroscience, 2022
Diffuse and structured extracellular matrix (ECM) comprise ∼20% of the brain’s volume and play important roles in development and adult plasticity. Perineuronal nets (PNNs), specialized ECM structures that surround certain types of neurons in the brain ...
Blake J. Laham, Elizabeth Gould
doaj   +1 more source

Chronic silencing of subsets of cortical layer 5 pyramidal neurons has a long‐term influence on the laminar distribution of parvalbumin interneurons and the perineuronal nets

Journal of Anatomy, Volume 246, Issue 4, Page 479-504, April 2025.
Chronic silencing of subsets of layer 5 projection neurons has distinct effects on the laminar distribution of PV interneurons and the perineuronal nets in the adult primary motor and somatosensory cortex. Abstract Neural networks are established throughout cortical development, which require the right ratios of glutamatergic and GABAergic neurons ...
Florina P. Szabó, Veronika Sigutova, Anna M. Schneider, Anna Hoerder‐Suabedissen, Zoltán Molnár   +4 more
wiley   +1 more source

The Astrocyte Clock Controls Circadian Perineuronal Net Remodeling, Synapse Strength and Learning Behavior

Glia, Volume 74, Issue 10, October 2026.
Bmal1 regulates astrocyte extracellular matrix (ECM) gene expression. Bmal1 deletion in astrocytes disrupts normal circadian rhythms in perineuronal nets (PNN) and reduces PNN content in the hippocampus. In parallel with loss of PNNs, deletion of the core circadian clock gene Bmal1 in astrocytes alters behavior and synaptic function in vivo.
Philip C. Smith, Elsa I. Quillin, Katheryn B. Lefton, Celia A. McKee, Brendan Dang, Thomas Papouin, Erik S. Musiek   +6 more
wiley   +1 more source

Parvalbumin interneurons in Alzheimer's disease: Physiological insights and pathophysiological mechanisms

Journal of Cell Communication and Signaling, Volume 20, Issue 3, September 2026.
Physiological and Pathological Alterations in PV+ Neurons: Under physiological conditions, PV+ interneurons exhibit fast‐spiking properties and generate gamma oscillations at the cost of high energy consumption. In AD, PV+ neurons display abnormalities in ion channels, dendrites, neurotransmission, energy metabolism, and neural oscillations, ultimately
Mengyan Wu, Xingdong Zeng, Yongle Cai, Haonan Chen, Qianying Li, Hao Yang   +5 more
wiley   +1 more source

Shaping Synapses by the Neural Extracellular Matrix

Frontiers in Neuroanatomy, 2018
Accumulating data support the importance of interactions between pre- and postsynaptic neuronal elements with astroglial processes and extracellular matrix (ECM) for formation and plasticity of chemical synapses, and thus validate the concept of a ...
Maura Ferrer-Ferrer, Alexander Dityatev, Alexander Dityatev, Alexander Dityatev   +3 more
doaj   +1 more source