Results 71 to 80 of about 150,350 (378)

A fractional version of Rivière's GL(N)-gauge [PDF]

arXiv, 2021
We prove that for antisymmetric vectorfield $\Omega$ with small $L^2$-norm there exists a gauge $A \in L^\infty \cap \dot{W}^{1/2,2}(\mathbb{R}^1,GL(N))$ such that ${\rm div}_{\frac12} (A\Omega - d_{\frac{1}{2}} A) = 0$. This extends a celebrated theorem by Rivi\`ere to the nonlocal case and provides conservation laws for a class of nonlocal equations ...
arxiv  

Remarks on symplectic twistor spaces [PDF]

Annali Matematica Pura ed Applicata, Volume 188, Number 3, July 2009, pp. 429-443, 2007
We consider some classical fibre bundles furnished with almost complex structures of twistor type, deduce their integrability in some cases and study \textit{self-holomorphic} sections of a \textit{symplectic} twistor space. With these we define a moduli space of $\omega$-compatible complex structures. We recall the theory of flag manifolds in order to
arxiv   +1 more source

Neurodegeneration in multiple sclerosis

WIREs Mechanisms of Disease, Volume 15, Issue 1, January/February 2023., 2023
Chronic demyelination results in impaired axon metabolism and function, ultimately leading to progressive neurological decline. Neuroprotective strategies aim to protect axons from inflammatory‐mediated destruction, thereby improving axonal integrity and clinical disability (Image created in BioRender.com).
Gabrielle M. Mey, Kedar R. Mahajan, Tara M. DeSilva   +2 more
wiley   +1 more source

Positive allosteric modulators of the a-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor [PDF]

, 2010
L-glutamate is the major excitatory neurotransmitter in the mammalian central nervous system (CNS) and plays a fundamental role in the control of motor function, cognition and mood.
Grove, Simon J .A., Jamieson, Craig, Maclean, John K. F., Morrow, John A., Rankovic, Zoran   +4 more
core   +1 more source

AMPA Receptor-Mediated Ca2+ Transients in Mouse Olfactory Ensheathing Cells

Frontiers in Cellular Neuroscience, 2019
Ca2+ signaling in glial cells is primarily triggered by metabotropic pathways and the subsequent Ca2+ release from internal Ca2+ stores. However, there is upcoming evidence that various ion channels might also initiate Ca2+ rises in glial cells by Ca2 ...
Antonia Beiersdorfer, Christian Lohr
doaj   +1 more source

Dysregulation of AMPA Receptor Trafficking and Intracellular Vesicular Sorting in the Prefrontal Cortex of Dopamine Transporter Knock-Out Rats

Biomolecules, 2023
Dopamine (DA) and glutamate interact, influencing neural excitability and promoting synaptic plasticity. However, little is known regarding the molecular mechanisms underlying this crosstalk.
Giorgia Targa, Francesca Mottarlini, Beatrice Rizzi, Damiana Leo, Lucia Caffino, Fabio Fumagalli   +5 more
doaj   +1 more source

Clathrin-Independent Trafficking of AMPA Receptors [PDF]

The Journal of Neuroscience, 2015
Membrane trafficking of AMPA receptors (AMPARs) is critical for neuronal function and plasticity. Although rapid forms of AMPAR internalization during long-term depression (LTD) require clathrin and dynamin, the mechanisms governing constitutive AMPAR turnover and internalization of AMPARs during slow homeostatic forms of synaptic plasticity remain ...
Glebov, Oleg, Tigaret, Cezar M., Mellor, Jack R., Henley, Jeremy M.   +3 more
openaire   +4 more sources

Interaction of GABA and Excitatory Amino Acids in the Basolateral Amygdala: Role in Cardiovascular Regulation [PDF]

, 1997
Activation of the amygdala in rats produces cardiovascular changes that include increases in heart rate and arterial pressure as well as behavioral changes characteristic of emotional arousal.
Cook, Jennifer C., Gregg, Adam E., Sanders, Brian J., Soltis, Robert P.   +3 more
core   +2 more sources

Evolution of anti-modified protein antibody responses can be driven by consecutive exposure to different post-translational modifications

Arthritis Research & Therapy, 2021
Background Besides anti-citrullinated protein antibodies (ACPA), rheumatoid arthritis patients (RA) often display autoantibody reactivities against other post-translationally modified (PTM) proteins, more specifically carbamylated and acetylated proteins.
M. Volkov, A. S. B. Kampstra, K. A. van Schie, A. Kawakami, M. Tamai, S. Kawashiri, T. Maeda, T. W. J. Huizinga, R. E. M. Toes, D. van der Woude   +9 more
doaj   +1 more source

3D In Vitro Glioma‐Neuron‐Astrocyte Biomimetic Composites Recapitulate Key Molecular Mechanisms Linked to Glioblastoma Multiforme Pathophysiology

Advanced Functional Materials, EarlyView.
Glioblastoma multiforme is the most devastating and incurable brain tumor. To better study this disease, a 3D model is developed using a hyaluronic acid‐based hydrogel combined with a multicellular approach. This model recapitulates in vivo brain stiffness, cell‐extracellular matrix and cell‐cell interactions and the tumor's hijacking function with the
Mateo S. Andrade Mier, Esra Türker, Jessica Faber, Mike Friedrich, Zan Lamberger, Jeannette Weigelt, Panthipa Suwannakot, Benedikt Gantert, Abhinav Singh, Vanessa Moessler, Annemarie Sodmann, Nicoletta Murenu, Joachim Schenk, Natascha Schaefer, Torsten Blunk, Aldo R. Boccaccini, Tessa C. Lühmann, Jörg Tessmar, Jeremy M. Crook, Eva Tomaskovic‐Crook, Paul D. Dalton, Gregor Lang, Robert Blum, Reiner Strick, Silvia Budday, Katrin G. Heinze, Carmen Villmann   +26 more
wiley   +1 more source