Results 81 to 90 of about 107,111 (187)
Ciguatoxins: Cyclic Polyether Modulators of Voltage-gated Iion Channel Function
Ciguatoxins are cyclic polyether toxins, derived from marine dinoflagellates, which are responsible for the symptoms of ciguatera poisoning. Ingestion of tropical and subtropical fin fish contaminated by ciguatoxins results in an illness characterised by
Richard J. Lewis, Graham M. Nicholson
doaj +1 more source
Optimization of the leak conductance in the squid giant axon
We report on a theoretical study showing that the leak conductance density, $\GL$, in the squid giant axon appears to be optimal for the action potential firing frequency.
A. L. Hodgkin +7 more
core +1 more source
Ion channels: structural basis for function and disease. [PDF]
Ion channels are ubiquitous proteins that mediate nervous and muscular function, rapid transmembrane signaling events, and ionic and fluid balance. The cloning of genes encoding ion channels has led to major strides in understanding the mechanistic basis
Goldstein, SA
core +1 more source
Molecular and functional characterization of voltage-gated sodium channels in human sperm
Background We have investigated the expression of voltage-gated sodium channels in human spermatozoa and characterized their role in sperm motility. Methods Freshly ejaculated semen was collected from thirty normozoospermic human donors, with each donor ...
Cejudo-Román Antonio +5 more
doaj +1 more source
Voltage-gated sodium channels are essential ionic-conductance pathways in the nervous system, which play an irreplaceable role in modulating neuronal excitability and signal transduction.
Ni Li +5 more
doaj +1 more source
Neurons are highly polarized cells with apparent functional and morphological differences between dendrites and axon. A critical determinant for the molecular and functional identity of axonal and dendritic segments is the restricted expression of ...
Jeffrey Lopez-Rojas +4 more
doaj +1 more source
α-Nemertides, a novel family of marine peptide neurotoxins from ribbon worms [PDF]
Ribbon worms (nemerteans) are marine predators, which capture their prey using a proboscis containing a mixture of toxins which brings on rapid paralysis.
Tytgat, J.
core
We investigate the regularity of spontaneous spiking activity on Newman-Watts small-world networks consisting of biophysically realistic Hodgkin-Huxley neurons with a tunable intensity of intrinsic noise and fraction of blocked voltage-gated sodium and ...
Ozer, Mahmut +2 more
core +1 more source
Voltage-gated sodium channels assemble and gate as dimers
Voltage-gated sodium channels are expressed in excitable tissues and mutations have been linked to cardiac arrhythmias and channelopathies. Here the authors show that the sodium channel α-subunits interact to form a dimer and gate as dimer and that this ...
Jérôme Clatot +9 more
doaj +1 more source
Detecting and Estimating Signals in Noisy Cable Structures, I: Neuronal Noise Sources [PDF]
In recent theoretical approaches addressing the problem of neural coding, tools from statistical estimation and information theory have been applied to quantify the ability of neurons to transmit information through their spike outputs. These techniques,
Koch, Christof, Manwani, Amit
core +1 more source

