Voltage Clamp Studies on the Slow Inward Current during the Excitation of<i>Nitellopsis obtusa</i>

Gyenes, M.; Булычев, А. А.; Kurella, G. A.

doi:10.1093/jxb/31.2.589

Cited by 6 publications

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“…By using the rare 26 Al isotope, it was shown that Al is capable of crossing biological membranes within minutes of exposure [14]. This suggests that intracellular lesions could play a role in acute Al toxicity.…”

Section: Discussionmentioning

confidence: 99%

“…The ATPase inhibitor DCCD at a concentration of 20 µM in the external medium inhibited the slow transient inward current without affecting the first rapid component. It is suggested that the irreversible slow transient current component reflects the onset of some active ion transport system in the plasmalemma during the exitation of Nitellopsis obtusa [26].…”

Section: Discussionmentioning

confidence: 99%

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The effect of aluminium on bioelectrical activity of the Nitellopsis obtusa cell membrane after H+-ATPase inhibition

Kisnierienë

Sakalauskas

2007

Open Life Sciences

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Aluminium induced membrane potential (E m ) changes and potential changes during repolarization phase of the action potential (AP) in the internodal cells of Nitellopsis obtusa after blocking H + -ATPase activity by DCCD were investigated. Micromolar concentrations of DCCD are sufficient togive complete and irreversible inhibition of proton pumping. The membrane potential was measured by conventional glass-microelectrode technique. We found that the half-amplitude pulse duration differs significantly between standard conditions, after DCCD application, and after H + -ATPase blocking and subsequent Al 3+ treatment: 4.9, 7.7 and 17.2 seconds, respectively. We propose that in the short term (2 hours) treatment of Al 3+ , the decrease in membrane potential was compensated for by H + -ATPase activity. Blocking H + -ATPase activity by DCCD can enhance the influence of Al 3+ on the bioelectrical activity of cell membranes.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The effect of aluminium on bioelectrical activity of the Nitellopsis obtusa cell membrane after H+-ATPase inhibition

Kisnierienë

Sakalauskas

2007

Open Life Sciences

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“…The ARIMA model is a typical time-series analysis and prediction model. From historical time-series data, we can build a dynamic model and predict the future trend of the data [20]. The ARIMA model is based on the autoregressive and moving average model, which is represented by the following formula:…”

Section: Arimamentioning

confidence: 99%

High-Precision Combined Tidal Forecasting Model

2019

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To improve the overall accuracy of tidal forecasting and ameliorate the low accuracy of single harmonic analysis, this paper proposes a combined tidal forecasting model based on harmonic analysis and autoregressive integrated moving average–support vector regression (ARIMA-SVR). In tidal analysis, the resultant tide can be considered as a superposition of the astronomical tide level and the non-astronomical tidal level, which are affected by the tide-generating force and environmental factors, respectively. The tidal data are de-noised via wavelet analysis, and the astronomical tide level is subsequently calculated via harmonic analysis. The residual sequence generated via harmonic analysis is used as the sample dataset of the non-astronomical tidal level, and the tidal height of the system is calculated by the ARIMA-SVR model. Finally, the tidal values are predicted by linearly summing the calculated results of both systems. The simulation results were validated against the measured tidal data at the tidal station of Bay Waveland Yacht Club, USA. By considering the residual non-astronomical tide level effects (which are ignored in traditional harmonic analysis), the combined model improves the accuracy of tidal prediction. Moreover, the combined model is feasible and efficient.

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The proton pump, high pH channels, and excitation: voltage clamp studies of intact and perfused cells ofNitellopsis obtusa

1993

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Voltage Clamp Studies on the Slow Inward Current during the Excitation ofNitellopsis obtusa

Cited by 6 publications

References 0 publications

The effect of aluminium on bioelectrical activity of the Nitellopsis obtusa cell membrane after H+-ATPase inhibition

The effect of aluminium on bioelectrical activity of the Nitellopsis obtusa cell membrane after H+-ATPase inhibition

High-Precision Combined Tidal Forecasting Model

The proton pump, high pH channels, and excitation: voltage clamp studies of intact and perfused cells ofNitellopsis obtusa

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