THE EFFECT OF QUESITROPEZOIDAL PULSES ON L-TYPE CA2+ CURRENT OF SOMATA OF F1 NEURON IN HELIX ASPERSA USING INTRACELLULAR RECORDING TECHNIQUES (VOLTAGE AND CURRENT CLAMP)

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BALUCHNEJADMOJARAD TOURANDOKHT; JANAHMADI M.; ROUGHANI M.

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Journal: Cell Journal (Yakhteh) Year:2002 | Volume:4 | Issue:13 Page(s): 33-40

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Title

THE EFFECT OF QUESITROPEZOIDAL PULSES ON L-TYPE CA2+ CURRENT OF SOMATA OF F1 NEURON IN HELIX ASPERSA USING INTRACELLULAR RECORDING TECHNIQUES (VOLTAGE AND CURRENT CLAMP)

Author(s)

BALUCHNEJADMOJARAD TOURANDOKHT | JANAHMADI M. | ROUGHANI M. | Issue Writer Certificate

Keywords

QUASITRAPEZOIDAL COMMAND POTENTIALSQ3

RECTANGULAR COMMAND POTENTIALSQ3

L-TYPE CA2+ CURRENTQ3

F1 NEURONQ3

VOLTAGE CLAMPQ3

Abstract

Introduction: The ionic currents show nonlinear behavior and electrical stimuli can influence their activation and inactivation kinetics. The time constant of depolarizing or hyperpolarizing current pulses has an important role in the firing behavior of neurons. In the present study, the effects of quasitrpezoidal command potentials on L-type calcium channel of somata of F1 NEURON in Helix aspesa were investigated.Material and Methods: In Na+ -K+ free solution, 8 F1 NEURONs were clamped from holding potentials of -90 or -40 mV to +90 mV by two forms of command potentials, rectangular and quasitrapezodial command potentials. Then F1 NEURONs in the presence of nifedipine (1μM), anorganic blocker of L-type calcium channel, were clamped by two forms command potentials.Results: In Na+ -K+ free solution, the QUASITRAPEZOIDAL COMMAND POTENTIALS in compared with RECTANGULAR COMMAND POTENTIALS caused a 36% decerment in peak of Ca2+ currents and shift threshold voltage toward positive potentials. After application of nifedipine, while the QUASITRAPEZOIDAL COMMAND POTENTIALS caused the threshold voltage of nifedipine – resistance Ca2+ currents became more positive but it caused no considerable change in peak current.Conclusion: The results show that slowly hyperpolarization of membrane potential through the QUASITRAPEZOIDAL COMMAND POTENTIALS can influence kinetics of ionic channels.

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APA: Copy

BALUCHNEJADMOJARAD, TOURANDOKHT, JANAHMADI, M., & ROUGHANI, M.. (2002). THE EFFECT OF QUESITROPEZOIDAL PULSES ON L-TYPE CA2+ CURRENT OF SOMATA OF F1 NEURON IN HELIX ASPERSA USING INTRACELLULAR RECORDING TECHNIQUES (VOLTAGE AND CURRENT CLAMP). CELL JOURNAL (YAKHTEH), 4(13), 33-40. SID. https://sid.ir/paper/16180/en

Vancouver: Copy

BALUCHNEJADMOJARAD TOURANDOKHT, JANAHMADI M., ROUGHANI M.. THE EFFECT OF QUESITROPEZOIDAL PULSES ON L-TYPE CA2+ CURRENT OF SOMATA OF F1 NEURON IN HELIX ASPERSA USING INTRACELLULAR RECORDING TECHNIQUES (VOLTAGE AND CURRENT CLAMP). CELL JOURNAL (YAKHTEH)[Internet]. 2002;4(13):33-40. Available from: https://sid.ir/paper/16180/en

IEEE: Copy

TOURANDOKHT BALUCHNEJADMOJARAD, M. JANAHMADI, and M. ROUGHANI, “THE EFFECT OF QUESITROPEZOIDAL PULSES ON L-TYPE CA2+ CURRENT OF SOMATA OF F1 NEURON IN HELIX ASPERSA USING INTRACELLULAR RECORDING TECHNIQUES (VOLTAGE AND CURRENT CLAMP),” CELL JOURNAL (YAKHTEH), vol. 4, no. 13, pp. 33–40, 2002, [Online]. Available: https://sid.ir/paper/16180/en

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