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논문 기본 정보

자료유형
학술저널
저자정보
Kwon Moo Park (Seoul National University) Sun-Don Kim (Seoul National University) Jin Bong Park (Chungnam National University) Sung-Jong Hong (Chung-Ang University College of Medicine) Pan Dong Ryu (Seoul National University)
저널정보
대한기생충학열대의학회 Parasites, Hosts and Diseases The Korean Journal of Parasitology Vol.59 No.4
발행연도
2021.8
수록면
329 - 339 (11page)

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Ion channels are important targets of anthelmintic agents. In this study, we identified 3 types of ion channels in Ascaris suum tissue incorporated into planar lipid bilayers using an electrophysiological technique. The most frequent channel was a large-conductance cation channel (209 pS), which accounted for 64.5% of channels incorporated (n=60). Its open-state probability (P<SUB>o</SUB>) was ~0.3 in the voltage range of –60~+60 mV. A substate was observed at 55% of the main-state. The permeability ratio of Cl- to K+ (P<SUB>Cl</SUB>/P<SUB>K</SUB>) was ~0.5 and P<SUB>Na</SUB>/P<SUB>K</SUB> was 0.81 in both states. Another type of cation channel was recorded in 7.5% of channels incorporated (n=7) and discriminated from the large-conductance cation channel by its smaller conductance (55.3 pS). Its Po was low at all voltages tested (~0.1). The third type was an anion channel recorded in 27.9% of channels incorporated (n=26). Its conductance was 39.0 pS and P<SUB>Cl</SUB>/P<SUB>K</SUB> was 8.6±0.8. P<SUB>o</SUB> was ~1.0 at all tested potentials. In summary, we identified 2 types of cation and 1 type of anion channels in Ascaris suum. Gating of these channels did not much vary with voltage and their ionic selectivity is rather low. Their molecular nature, functions, and potentials as anthelmintic drug targets remain to be studied further.

목차

Abstract
INTRODUCTION
MATERIALS AND METHODS
RESULTS
DISCUSSION
REFERENCES

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