Results 21 to 30 of about 45,106 (206)

Does Ocean Sunfish Mola spp. (Tetraodontiformes: Molidae) Represent a Risk for Tetrodotoxin Poisoning in the Portuguese Coast?

open access: yesMarine Drugs, 2022
Tetrodotoxin (TTX) is a potent neurotoxin naturally occurring in terrestrial and marine organisms such as pufferfish. Due to the risk of TTX poisoning, fish of Tetraodontidae family and other puffer-related species must not be placed in the EU markets ...
Miguel Baptista   +3 more
doaj   +1 more source

The envenomation of general physiology throughout the last century. [PDF]

open access: yes, 2017
Toxins are the poisonous products of organisms. Toxins serve vital defensive and offensive functions for those that harbor them: stinging scorpions, pesticidal plants, sanguinary snakes, fearless frogs, sliming snails, noxious newts, and smarting spiders.
Sack, Jon T
core   +1 more source

Tetrodotoxin Concentrations in Pleurobranchaea maculata: Temporal, Spatial and Individual Variability from New Zealand Populations

open access: yesMarine Drugs, 2012
Tetrodotoxin (TTX) is a potent neurotoxin that has been identified in a range of phylogenetically unrelated marine and terrestrial organisms. Tetrodotoxin was recently detected in New Zealand in Pleurobranchaea maculata (the grey side-gilled sea slug ...
Stephen Craig Cary   +5 more
doaj   +1 more source

First Detection of Tetrodotoxins in the Cotylean Flatworm Prosthiostomum trilineatum

open access: yesMarine Drugs, 2021
Several polyclad flatworm species are known to contain high levels of tetrodotoxin (TTX), but currently TTX-bearing flatworms seem to be restricted to specific Planocera lineages belonging to the suborder Acotylea.
Rei Suo   +8 more
doaj   +1 more source

Alternative Pathways of Acetylcholine Release in the Colon: Role of High-Affinity Choline Transporters. [PDF]

open access: yesNeurogastroenterol Motil
Mechanisms of Acetylcholine release, including typical and atypical release under neuronal blockade. Left panel illustrates the classical (quantal) cholinergic transmission and the right panel the mechanism described in the present study. High‐Affinity Choline Transporter (HCT), Acetylcholine (ACh), Acetylcholinesterase (ACE), and Tetrodotoxin (TTX ...
Martinez-Daunis A   +4 more
europepmc   +2 more sources

The neonatal splice variant of Nav1.5 potentiates in vitro invasive behaviour of MDA-MB-231 human breast cancer cells [PDF]

open access: yes, 2007
Upregulation of functional voltage-gated Na+ channels (VGSCs) occurs in metastatic human breast cancer (BCa) in vitro and in vivo. The present study aimed to ascertain the specific involvement of the 'neonatal' splice variant of Nav1.5 (nNav1.5), thought
Brackenbury, William J.   +3 more
core   +1 more source

Preliminary Results on the Evaluation of the Occurrence of Tetrodotoxin Associated to Marine Vibrio spp. in Bivalves from the Galician Rias (Northwest of Spain)

open access: yesMarine Drugs, 2018
Tetrodotoxins (TTX) are a potent group of natural neurotoxins putatively produced by symbiotic microorganisms and affecting the aquatic environment. These neurotoxins have been recently found in some species of bivalves and gastropods along the European ...
Jose Manuel Leão   +4 more
doaj   +1 more source

Facilitatory actions of guanidine on synaptic transmission in mammalian brain slices [PDF]

open access: yes, 1979
Guanidine administration may be beneficial in the treatment of amyotrophic lateral sclerosis and related diseases; however, the actions of guanidine on the mammalian central nervous system have not been investigated.
Galvan, Martin   +2 more
core   +1 more source

Response Surface Methodology for the Optimization of Ultrasound-Assisted Extraction of Tetrodotoxin from the Liver of Takifugu pseudommus

open access: yesToxins, 2018
Tetrodotoxin (TTX) is a marine biotoxin that has high scientific value. However, the lack of efficient TTX extraction and preparation methods has led to a scarcity of TTX samples for clinical application.
Xiaojun Zhang   +6 more
doaj   +1 more source

Presynaptic actions of 4-Aminopyridine and γ-aminobutyric acid on rat sympathetic ganglia in vitro [PDF]

open access: yes, 1980
Responses to bath-applications of 4-aminopyridine (4-AP) and -aminobutyric acid (GABA) were recorded intracellularly from neurones in the rat isolated superior cervical ganglion.
A Nistri   +36 more
core   +1 more source

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