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veratridine/anemone
Холбоосыг санах ойд хадгалдаг
13 үр дүн
Interactions between anemone toxin II and veratridine on single neuronal sodium channels.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
The nature of the known positive cooperativity between alkaloid and alpha-polypeptide toxins on macroscopic sodium currents was studied at the single-channel level. We have previously characterized the single-channel function of veratridine (VTD)-modified and anemone toxin II (ATX)-modified channels
Effects of neurotoxins (veratridine, sea anemone toxin, tetrodotoxin) on transmitter accumulation and release by nerve terminals in vitro.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
Two of the tree toxic compounds used in this work, veratridine and the sea anemone toxin, provoke neurotransmitter release from synaptosomes; the third one, tetrodotoxin, prevents the action of both veratridine and the sea anemone toxin. The half-maximum effects of veratridine and sea anemone toxin
Iodine labelling of sea anemone toxin II, and binding to normal and denervated diaphragm.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
1. Sea anemone toxin II (ATX II) which keeps the activated sodium channels open, can be labelled at its histidine residues with 125I up to a specific radioactivity of 500 Ci/mmole. Upon intraventricular injection in mice, ATX II causes acute, short-lasting hyperexcitation and convulsions. Its LD50
Sea anemone toxin:a tool to study molecular mechanisms of nerve conduction and excitation-secretion coupling.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
The effects of polypeptide neurotoxin from Anemonia sulcata on nerve conduction in crayfish giant axons and on frog myelinated fibers have been analyzed. The main features of toxin action are the following: (i) the toxin acts at very low doses and its action is apparently irreversible. (ii) The
Investigations on the mechanism of cyclic guanosine monophosphate increase due to depolarizing agents as studied with sea anemone toxin II in mouse cerebellar slices.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
Sea anemone toxin II (ATX II) and MCD-peptide, like other depolarizing agents, raise the content of cGMP and to a lesser extent of cAMP in mouse cerebellar slices. Na+ influx and Ca2+ movement are involved in their mode of action, as indicated by the following observations: 1. The rise of cGMP due
Anemone toxin (ATX II)-induced increase in persistent sodium current: effects on the firing properties of rat neocortical pyramidal neurones.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
1. The experiments were performed on sensorimotor cortex using current-clamp intracellular recordings in layer V pyramidal neurones and whole-cell voltage-clamp recordings in dissociated pyramidal neurones. The intracellularly recorded neurones were classified on the basis of their firing
Anemone toxin II receptor site of the lobster nerve sodium channel. Studies in membrane vesicles and in proteoliposomes.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
The receptor-site for the sea anemone toxin II from Anemonia sulcata (ATX) and its functional relationship with the Na+ channel were studied in plasma membrane preparations from lobster walking leg nerves. The modification of the 22Na influx by ATX was determined in membrane vesicles and in
Potential-dependent effects of sea anemone toxins and scorpion venom on crayfish giant axon.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
Effects of two kinds of sea anemone toxin (Parasicyonis actinostoloides and Anemonia sulcata) and scorpion venom (Leiurus quinquestriatus) on crayfish giant axons were examined electrophysiologically. All toxins acted on the axon in a similar manner to prolong the falling phase of the action
Pyrethroid insecticides and DDT modify alkaloid-dependent sodium channel activation and its enhancement by sea anemone toxin.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
The effects of saturating concentrations of DDT [1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane] and the pyrethroid insecticides cismethrin and deltamethrin on alkaloid-dependent activation of the voltage-sensitive sodium channel were studied using measurements of 22Na+ uptake into mouse brain
Binding of sea anemone toxin to receptor sites associated with gating system of sodium channel in synaptic nerve endings in vitro.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
Iodination of toxin II from the sea anemone Anemonia sulcata gives a labeled monoiododerivative that retains 80% of the original neurotoxicity. This derivative binds specifically to rat brain synaptosomes at 20 degrees C and pH 7.4 with a second-order rate constant of association ka = 4.6 x 10(4)
Sea anemone toxin and scorpion toxin share a common receptor site associated with the action potential sodium ionophore.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
Toxin II isolated from the sea anemone Anemonia sulcata enhances activation of the action potential sodium ionophore of electrically excitable neuroblastoma cells by veratridine and batrachotoxin. This heterotropic cooperative effect is identical to that observed previously with scorpion toxin but
Identification and characterization of novel sodium channel toxins from the sea anemone Anthopleura xanthogrammica.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
Six new toxins from the sea anemone Anthopleura xanthogrammica were identified using a molecular biological approach. Five of these novel isoforms resemble the 47 residue type I long polypeptides native to Anthopleura elegantissima, Anthopleura fuscoviridis and Anemonia sulcata, while one appears to
Purification and pharmacological properties of eight sea anemone toxins from Anemonia sulcata, Anthopleura xanthogrammica, Stoichactis giganteus, and Actinodendron plumosum.
Зөвхөн бүртгэлтэй хэрэглэгчид л нийтлэл орчуулах боломжтой
Нэвтрэх / Бүртгүүлэх
Eight different polypeptide toxins from sea anemones of four different origins (Anemonia sulcata, Anthopleura xanthogrammica, Stoichactis giganteus, and Actinodendron plumosum) have been studied. Three of these toxins are new; the purification procedure for the five other ones has been improved. Sea
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