Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Wolfgang Lueken"'
Publikováno v:
Chaos, Solitons & Fractals. 11:1917-1922
We consider the dynamics of the membrane voltage of Euplotes vannus and we suppose that behind this behaviour there is a system that generates Stochastic Resonance phenomena (Benzi R, Sutera A, Vulpiani A. J Phys A 1981;14:L453). We observe the stati
Publikováno v:
Journal of Experimental Biology. 202:475-483
In the marine ciliate Euplotes raikovi, pheromone released by a complementary mating type (nonself pheromone) induces typical sexual behaviour, whereas self pheromone released by the same mating type generally has no effect. Nonself pheromone evokes
Publikováno v:
Polar Biology. 20:127-133
Electric membrane properties and motor behaviour of two Antarctic and two middle-latitude species of Euplotes were compared. Membrane potential fluctuations and whole-cell currents were measured using the whole cell clamp. The electrical properties o
Publikováno v:
The Journal of Eukaryotic Microbiology. 44:427-433
Equally dispersed Euplotes vannus cells accumulate inside a drop of supernatant of a bacteria suspension that is surrounded by a reference solution. In the drop, frequencies of stops and backward jerks are tenfold increased. The sequences of directio
Publikováno v:
European Journal of Protistology. 33:63-71
Summary Strains of Euplotes vannus (a marine hypotrichous ciliate) were treated with 2 μM Hg++. The ethograms of treated and control populations differ due to several traits, which are qualitatively described and quantitatively measured: (a) the cre
Publikováno v:
European Journal of Protistology. 32:47-54
Summary In the marine hypotrich Euplotes vannus, the coupling of behavioural elements to shifts in the freely fluctuating membrane potential was investigated by use of a computerized locomotion track evaluation system. Potential shifts were attribute
Publikováno v:
Biochimica et Biophysica Acta (BBA) - Biomembranes. 1062:193-198
In the marine hypotrichous ciliate Euplotes vannus, the transient K+ outward current, IK fast, was studied by use of a single-microelectrode voltage-clamp equipment. Activation and inactivation kinetics, and steady-state inactivation are comparable t
Publikováno v:
The Journal of Membrane Biology. 135
Electrical responses upon mechanostimulation at the posterior cell end were investigated in the marine hypotrichous ciliate Euplotes vannus. A new mechanostimulator was developed to mimic stimuli that are identical with those involved in cell-cell co
Autor:
Thomas Krüppel, Wolfgang Lueken
Publikováno v:
The Journal of membrane biology. 116(1)
Ca and Na inward currents were recorded upon depolarizations in Euplotes after the blockage of K outward currents with intracellular Cs ions. The Na current was analyzed under voltage clamp and had the following properties: it activated to a maximum
Publikováno v:
The Journal of Protozoology. 36:350-353
The marine ciliate Euplotes vannus was used to lest whether keronopsin, the water-soluble component of (he toxic pigment complex from Pseudokeronopsis rubra, narcotizes cells by affecting ion conductance. Keronopsin delays the rate of rise in the reg