Results 101 to 110 of about 29,685 (270)

Nav1.2 and BK channel interaction shapes the action potential in the axon initial segment

, 2023
International audienceAbstract In neocortical layer‐5 pyramidal neurons, the action potential (AP) is generated in the axon initial segment (AIS) when the membrane potential ( V m ) reaches the threshold for activation of the voltage‐gated Na + channels (
Blömer, Laila Ananda, Loussouarn, Gildas, Canepari, Marco, Marco Canepari, Jérôme Montnach, Gildas Loussouarn, Laila Ananda Blömer, Filipis, Luiza, Montnach, Jérôme, Luiza Filipis, Michel De Waard, de Waard, Michel   +11 more
core   +1 more source

Potassium channel clustering: mechanisms shaping axonal excitability

Frontiers in Cellular Neuroscience
The precise clustering of ion channels at axon initial segments (AIS) and nodes of Ranvier is essential for axonal excitability and rapid action potential propagation.
Gabriel Escobedo, Matthew N. Rasband
doaj   +1 more source

Functional Mapping of Neurodevelopmental Disease Pathways to Key Neurodevelopmental Processes Represented in the Developmental Neurotoxicity In Vitro Testing Battery

Advanced Science, EarlyView.
Human‐relevant methods are essential for modern chemical safety assessment. This study helps define the capabilities and boundaries of an in vitro testing battery for developmental neurotoxicity by exploring its biological applicability domain. By linking neurodevelopmental disease‐related pathways to key neurodevelopmental processes, the work enhances
Eliska Kuchovska, Kristina Bartmann, Georgea Raad, Mats Schade, Luiz Ladeira, Arif Dönmez, Jördis Klose, Nicolai Görts, Denis Polozij, Lynn‐Christin Saborowski, Farina Bendt, Bernard Staumont, Liesbet Geris, Katharina Koch, Ellen Fritsche   +14 more
wiley   +1 more source

Dynein Regulator NDEL1 Controls Polarized Cargo Transport at the Axon Initial Segment [PDF]

, 2016
The development and homeostasis of neurons relies heavily on the selective targeting of vesicles into axon and dendrites. Microtubule-based motor proteins play an important role in polarized transport; however, the sorting mechanism to exclude dendritic ...
Kapitein, LC, Chazeau, A, Hofenk, J, Celbiologie, van de Willige, D, Franker, Mariella A, Kuijpers, Marijn, Hoogenraad, Casper C, Rodrigues, RJC, Freal, Amélie, Akhmanova, A, Hofenk, Jasper, Freal, A, Hoogenraad, CC, Kapitein, Lukas C, Sub Cell Biology, Kuijpers, M, van de Willige, Dieudonnée, Rodrigues, Ricardo J Cordeiro, Akhmanova, Anna, Franker, MA, Jaarsma, Dick, Chazeau, Anaël   +22 more
core   +1 more source

FGF13 Deficiency Ameliorates Paclitaxel‐Induced Neuropathic Pain by Inhibiting VASH1‐Mediated Microtubule Detyrosination to Promote Mitophagy

Advanced Science, EarlyView.
FGF13 is upregulated in DRG neurons of PIPNP model mice. DRG neuron‐specific knockout of FGF13 ameliorates PIPNP symptoms. Mechanistically, FGF13 potentiates microtubule detyrosination by promoting VASH1 binding to microtubules. FGF13 knockout suppresses VASH1‐mediated microtubule detyrosination and promotes α‐tubulin tyrosination.
Yiming Dong, Yidan Wang, Simeng Lv, Zishan Dong, Kaixi Zhi, Xiuhua Guo, Xuyan Li, Ruoxi Yu, Yiyi Zhang, Siyuan Cheng, Chuan Wang   +10 more
wiley   +1 more source

Mapping axon initial segment structure and function by multiplexed proximity biotinylation

Nature Communications, 2020
The axon initial segment (AIS) is a specialized location in neurons with clustered ion channels which regulates the distribution of neuronal materials.
Hamdan Hamdan, Brian C. Lim, Tomohiro Torii, Abhijeet Joshi, Matthias Konning, Cameron Smith, Donna J. Palmer, Philip Ng, Christophe Leterrier, Juan A. Oses-Prieto, Alma L. Burlingame, Matthew N. Rasband   +11 more
doaj   +1 more source

Endoplasmic Reticulum Geometry Dictates Neuronal Bursting via Calcium Store Refill Rates and Exposes Selective Neuronal Vulnerability

Advanced Science, EarlyView.
The ER's continuous tubular network is maintained by ER‐shaping proteins whose mutation or dysregulation contributes to neurodegenerative diseases. Here, we show that ER morphology sets the speed of Ca2+ store replenishment between firing events. Disrupting ER continuity slows intra‐ER Ca2+ redistribution from extracellular refill (SOCE) sites, driving
Valentina Davi, Pierre Parutto, Yuyi Zhang, Tasuku Konno, Cecile Crapart, Raquel Pereira, John P. Franklin, Mosab Ali Awadelkareem, Daniel C Maddison, Michael J. Devine, Edgar R. Gomes, Joseph Chambers, Elena Koslover, Edward Avezov   +13 more
wiley   +1 more source

Carboranyl‐Curcuminoids for the Neutron Capture‐Based Treatment of Amyloid Aggregates in Alzheimer's Disease

Advanced Science, EarlyView.
The 10B‐enriched monocarbonyl analog of curcumin (BMAC) 10B‐9 enables site‐specific Boron Neutron Capture Therapy (BNCT) on amyloid‐β (Aβ) fibrils. Neutron irradiation induces histidine oxidation and fibril destabilization, as revealed by 1H‐NMR and FESEM analyses.
Sebastiano Micocci, Stefano Parisotto, Diego Alberti, Alberto Lanfranco, Valeria Bitonto, Polyssena Renzi, Martina Salmi, Andrea Magnani, Federica Dal Bello, Katiuscia Pagano, Laura Ragona, Nicoletta Protti, Annamaria Deagostino, Simonetta Geninatti Crich   +13 more
wiley   +1 more source

Axon Initial Segment Integrity in Aging and Traumatic Brain Injury

, 2019
According to the Center for Disease Control’s (CDC) report to the Congress, there are 2.2 million emergency department visits; 80,000 hospitalizations; and 50,000 deaths each year due to traumatic brain injury.
Gouda, Mazen M
core   +1 more source

Targeting Supramolecular Active Complexes of Nav1.7/Nav1.8 to Relieve Chronic Neuropathic Pain

Advanced Science, EarlyView.
In mice and patients with severe chronic neuropathic pain (NP), Nav1.7, Nav1.8, TrkB, and five cytoskeletal proteins form supramolecular active complexes (SMACs) with polygonal lattice structures as noxious signal amplifiers in dorsal root ganglion (DRG) neurons.
Liting Sun, Hang Xian, Yunxin Shi, Taotan Yang, Hongyan Shuai, Wenchao Hu, Siying Fei, Miao Xu, Taoyuan Yang, Ruilong Xia, Ting Wen, Fengting Zhu, Yan Fu, Yang Li, Wei Xia, Ran Qian, Yuanying Liu, Zhicheng Tian, Lamei Li, Qian Zhou, Lize Xiong, Rui Cong, Ceng Luo, Shengxi Wu, Xiafeng Shen, Xin Yu, Rou‐Gang Xie, Changgeng Peng   +27 more
wiley   +1 more source