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논문 기본 정보

자료유형
학위논문
저자정보

Minji Kang (강원대학교, 강원대학교 대학원)

지도교수
박원선
발행연도
2023
저작권
강원대학교 논문은 저작권에 의해 보호받습니다.

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이 논문의 연구 히스토리 (2)

초록· 키워드

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Olanzapine, an FDA-approved atypical antipsychotic, is used to treat schizophrenia and bipolar disorder. In the present study, the inhibitory effect of olanzapine on voltage-dependent K+ (Kv) channels in rabbit coronary arterial smooth muscle cells was investigated. Olanzapine inhibited the Kv channel in a concentration-dependent manner with IC50 value of 7.76 ± 1.80 µM and Hill coefficient of 0.82 ± 0.09. Although olanzapine did not alter the steady-state activation curve, it shifted the steady-state inactivation curve to more negative potential, suggesting that it inhibited Kv channels by affecting the voltage sensor of the channel. Application of 1 or 2 Hz train pulses did not affect the olanzapine-induced inhibition of Kv channels, suggesting that its effect on Kv channels occurs in a state-independent manner. Pretreatment with DPO-1 (Kv1.5 channel inhibitor) reduced the olanzapine-induced inhibition of Kv currents. In addition, pretreatment with guangxitoxin (Kv2.1 channel inhibitor) and linopiridine (Kv7 channel inhibitor) partially decreased the degree of Kv current inhibition. From these results, we suggest that olanzapine inhibits the Kv channels in a concentration-dependent, but state-independent, manner by affecting the gating properties of Kv channels. The primary Kv channel target of olanzapine is the Kv1.5 subtype.

목차

Part 1. Atypical antipsychotic olanzapine inhibits voltage-dependent K+ channels in coronary arterial smooth muscle cells
I. Abstract 2
II. Introduction 3
III. Materials and Methods 5
IV. Results 8
V. Discussion 23
VI. References 27
Ⅶ. Graphic Abstract 33
Part 2. Inhibitory effects of the atypical antipsychotic, clozapine, on voltage-dependent K+ channels in rabbit coronary arterial smooth muscle cells
I. Abstract 35
II. Introduction 36
III. Materials and Methods 38
IV. Results 42
V. Discussion 55
VI. References 59
Ⅶ. Graphic Abstract 65
Ⅷ. Summary in Korean 66

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