The inhibitory effect of ziprasidone on voltage-dependent K+ channels in coronary arterial smooth muscle cells
We investigated the effect of ziprasidone, a widely used treatment for schizophrenia, on voltage-dependent K+ (Kv) channels of coronary arterial smooth muscle cells using the patch-clamp technique. Ziprasidone dose-dependently inhibited Kv channels with an IC50 value of 0.39 ± 0.06 μM and a Hill coe...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
An, Jin Ryeol [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2020transfer abstract |
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| Schlagwörter: |
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| Umfang: |
7 |
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| Übergeordnetes Werk: |
Enthalten in: Preparation and characterization of glass-ceramics via co-sintering of coal fly ash and oil shale ash-derived amorphous slag - Zhang, Zhikun ELSEVIER, 2019, BBRC, Orlando, Fla |
|---|---|
| Übergeordnetes Werk: |
volume:529 ; year:2020 ; number:2 ; day:20 ; month:08 ; pages:191-197 ; extent:7 |
| Links: |
|---|
| DOI / URN: |
10.1016/j.bbrc.2020.06.038 |
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ELV050887483 |
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| 245 | 1 | 4 | |a The inhibitory effect of ziprasidone on voltage-dependent K+ channels in coronary arterial smooth muscle cells |
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| 520 | |a We investigated the effect of ziprasidone, a widely used treatment for schizophrenia, on voltage-dependent K+ (Kv) channels of coronary arterial smooth muscle cells using the patch-clamp technique. Ziprasidone dose-dependently inhibited Kv channels with an IC50 value of 0.39 ± 0.06 μM and a Hill coefficient of 0.62 ± 0.03. Although ziprasidone had no effect on the steady-state inactivation kinetics of the Kv channels, the steady-state activation curve shifted towards a more positive potential. These results suggest that ziprasidone inhibits Kv channels by targeting their voltage sensors. The recovery time constant of Kv channel inactivation was increased in the presence of ziprasidone. Furthermore, application of train steps (of 1 and 2 Hz) in the presence of ziprasidone led to a progressive increase in the blockade of Kv currents, suggesting that ziprasidone-induced inhibition of Kv channels is use (state)-dependent. Pretreatment with Kv1.5, Kv2.1, and Kv7 subtype inhibitors partially suppressed the ziprasidone-induced inhibition of Kv currents. These results suggest that ziprasidone inhibits vascular Kv channels through its effect on gating properties. The Kv channel-inhibiting action of ziprasidone is concentration- and use (state)-depedent. | ||
| 520 | |a We investigated the effect of ziprasidone, a widely used treatment for schizophrenia, on voltage-dependent K+ (Kv) channels of coronary arterial smooth muscle cells using the patch-clamp technique. Ziprasidone dose-dependently inhibited Kv channels with an IC50 value of 0.39 ± 0.06 μM and a Hill coefficient of 0.62 ± 0.03. Although ziprasidone had no effect on the steady-state inactivation kinetics of the Kv channels, the steady-state activation curve shifted towards a more positive potential. These results suggest that ziprasidone inhibits Kv channels by targeting their voltage sensors. The recovery time constant of Kv channel inactivation was increased in the presence of ziprasidone. Furthermore, application of train steps (of 1 and 2 Hz) in the presence of ziprasidone led to a progressive increase in the blockade of Kv currents, suggesting that ziprasidone-induced inhibition of Kv channels is use (state)-dependent. Pretreatment with Kv1.5, Kv2.1, and Kv7 subtype inhibitors partially suppressed the ziprasidone-induced inhibition of Kv currents. These results suggest that ziprasidone inhibits vascular Kv channels through its effect on gating properties. The Kv channel-inhibiting action of ziprasidone is concentration- and use (state)-depedent. | ||
| 650 | 7 | |a Smooth muscle cell |2 Elsevier | |
| 650 | 7 | |a Atypical antipsychotics |2 Elsevier | |
| 650 | 7 | |a Voltage-dependent K+ channel |2 Elsevier | |
| 650 | 7 | |a Ziprasione |2 Elsevier | |
| 700 | 1 | |a Seo, Mi Seon |4 oth | |
| 700 | 1 | |a Jung, Hee Seok |4 oth | |
| 700 | 1 | |a Heo, Ryeon |4 oth | |
| 700 | 1 | |a Kang, Minji |4 oth | |
| 700 | 1 | |a Ha, Kwon-Soo |4 oth | |
| 700 | 1 | |a Park, Hongzoo |4 oth | |
| 700 | 1 | |a Park, Won Sun |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Academic Press |a Zhang, Zhikun ELSEVIER |t Preparation and characterization of glass-ceramics via co-sintering of coal fly ash and oil shale ash-derived amorphous slag |d 2019 |d BBRC |g Orlando, Fla |w (DE-627)ELV002811154 |
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10.1016/j.bbrc.2020.06.038 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001230.pica (DE-627)ELV050887483 (ELSEVIER)S0006-291X(20)31245-6 DE-627 ger DE-627 rakwb eng 670 VZ 51.60 bkl 58.45 bkl An, Jin Ryeol verfasserin aut The inhibitory effect of ziprasidone on voltage-dependent K+ channels in coronary arterial smooth muscle cells 2020transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We investigated the effect of ziprasidone, a widely used treatment for schizophrenia, on voltage-dependent K+ (Kv) channels of coronary arterial smooth muscle cells using the patch-clamp technique. Ziprasidone dose-dependently inhibited Kv channels with an IC50 value of 0.39 ± 0.06 μM and a Hill coefficient of 0.62 ± 0.03. Although ziprasidone had no effect on the steady-state inactivation kinetics of the Kv channels, the steady-state activation curve shifted towards a more positive potential. These results suggest that ziprasidone inhibits Kv channels by targeting their voltage sensors. The recovery time constant of Kv channel inactivation was increased in the presence of ziprasidone. Furthermore, application of train steps (of 1 and 2 Hz) in the presence of ziprasidone led to a progressive increase in the blockade of Kv currents, suggesting that ziprasidone-induced inhibition of Kv channels is use (state)-dependent. Pretreatment with Kv1.5, Kv2.1, and Kv7 subtype inhibitors partially suppressed the ziprasidone-induced inhibition of Kv currents. These results suggest that ziprasidone inhibits vascular Kv channels through its effect on gating properties. The Kv channel-inhibiting action of ziprasidone is concentration- and use (state)-depedent. We investigated the effect of ziprasidone, a widely used treatment for schizophrenia, on voltage-dependent K+ (Kv) channels of coronary arterial smooth muscle cells using the patch-clamp technique. Ziprasidone dose-dependently inhibited Kv channels with an IC50 value of 0.39 ± 0.06 μM and a Hill coefficient of 0.62 ± 0.03. Although ziprasidone had no effect on the steady-state inactivation kinetics of the Kv channels, the steady-state activation curve shifted towards a more positive potential. These results suggest that ziprasidone inhibits Kv channels by targeting their voltage sensors. The recovery time constant of Kv channel inactivation was increased in the presence of ziprasidone. Furthermore, application of train steps (of 1 and 2 Hz) in the presence of ziprasidone led to a progressive increase in the blockade of Kv currents, suggesting that ziprasidone-induced inhibition of Kv channels is use (state)-dependent. Pretreatment with Kv1.5, Kv2.1, and Kv7 subtype inhibitors partially suppressed the ziprasidone-induced inhibition of Kv currents. These results suggest that ziprasidone inhibits vascular Kv channels through its effect on gating properties. The Kv channel-inhibiting action of ziprasidone is concentration- and use (state)-depedent. Smooth muscle cell Elsevier Atypical antipsychotics Elsevier Voltage-dependent K+ channel Elsevier Ziprasione Elsevier Seo, Mi Seon oth Jung, Hee Seok oth Heo, Ryeon oth Kang, Minji oth Ha, Kwon-Soo oth Park, Hongzoo oth Park, Won Sun oth Enthalten in Academic Press Zhang, Zhikun ELSEVIER Preparation and characterization of glass-ceramics via co-sintering of coal fly ash and oil shale ash-derived amorphous slag 2019 BBRC Orlando, Fla (DE-627)ELV002811154 volume:529 year:2020 number:2 day:20 month:08 pages:191-197 extent:7 https://doi.org/10.1016/j.bbrc.2020.06.038 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 51.60 Keramische Werkstoffe Hartstoffe Werkstoffkunde VZ 58.45 Gesteinshüttenkunde VZ AR 529 2020 2 20 0820 191-197 7 |
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10.1016/j.bbrc.2020.06.038 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001230.pica (DE-627)ELV050887483 (ELSEVIER)S0006-291X(20)31245-6 DE-627 ger DE-627 rakwb eng 670 VZ 51.60 bkl 58.45 bkl An, Jin Ryeol verfasserin aut The inhibitory effect of ziprasidone on voltage-dependent K+ channels in coronary arterial smooth muscle cells 2020transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We investigated the effect of ziprasidone, a widely used treatment for schizophrenia, on voltage-dependent K+ (Kv) channels of coronary arterial smooth muscle cells using the patch-clamp technique. Ziprasidone dose-dependently inhibited Kv channels with an IC50 value of 0.39 ± 0.06 μM and a Hill coefficient of 0.62 ± 0.03. Although ziprasidone had no effect on the steady-state inactivation kinetics of the Kv channels, the steady-state activation curve shifted towards a more positive potential. These results suggest that ziprasidone inhibits Kv channels by targeting their voltage sensors. The recovery time constant of Kv channel inactivation was increased in the presence of ziprasidone. Furthermore, application of train steps (of 1 and 2 Hz) in the presence of ziprasidone led to a progressive increase in the blockade of Kv currents, suggesting that ziprasidone-induced inhibition of Kv channels is use (state)-dependent. Pretreatment with Kv1.5, Kv2.1, and Kv7 subtype inhibitors partially suppressed the ziprasidone-induced inhibition of Kv currents. These results suggest that ziprasidone inhibits vascular Kv channels through its effect on gating properties. The Kv channel-inhibiting action of ziprasidone is concentration- and use (state)-depedent. We investigated the effect of ziprasidone, a widely used treatment for schizophrenia, on voltage-dependent K+ (Kv) channels of coronary arterial smooth muscle cells using the patch-clamp technique. Ziprasidone dose-dependently inhibited Kv channels with an IC50 value of 0.39 ± 0.06 μM and a Hill coefficient of 0.62 ± 0.03. Although ziprasidone had no effect on the steady-state inactivation kinetics of the Kv channels, the steady-state activation curve shifted towards a more positive potential. These results suggest that ziprasidone inhibits Kv channels by targeting their voltage sensors. The recovery time constant of Kv channel inactivation was increased in the presence of ziprasidone. Furthermore, application of train steps (of 1 and 2 Hz) in the presence of ziprasidone led to a progressive increase in the blockade of Kv currents, suggesting that ziprasidone-induced inhibition of Kv channels is use (state)-dependent. Pretreatment with Kv1.5, Kv2.1, and Kv7 subtype inhibitors partially suppressed the ziprasidone-induced inhibition of Kv currents. These results suggest that ziprasidone inhibits vascular Kv channels through its effect on gating properties. The Kv channel-inhibiting action of ziprasidone is concentration- and use (state)-depedent. Smooth muscle cell Elsevier Atypical antipsychotics Elsevier Voltage-dependent K+ channel Elsevier Ziprasione Elsevier Seo, Mi Seon oth Jung, Hee Seok oth Heo, Ryeon oth Kang, Minji oth Ha, Kwon-Soo oth Park, Hongzoo oth Park, Won Sun oth Enthalten in Academic Press Zhang, Zhikun ELSEVIER Preparation and characterization of glass-ceramics via co-sintering of coal fly ash and oil shale ash-derived amorphous slag 2019 BBRC Orlando, Fla (DE-627)ELV002811154 volume:529 year:2020 number:2 day:20 month:08 pages:191-197 extent:7 https://doi.org/10.1016/j.bbrc.2020.06.038 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 51.60 Keramische Werkstoffe Hartstoffe Werkstoffkunde VZ 58.45 Gesteinshüttenkunde VZ AR 529 2020 2 20 0820 191-197 7 |
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10.1016/j.bbrc.2020.06.038 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001230.pica (DE-627)ELV050887483 (ELSEVIER)S0006-291X(20)31245-6 DE-627 ger DE-627 rakwb eng 670 VZ 51.60 bkl 58.45 bkl An, Jin Ryeol verfasserin aut The inhibitory effect of ziprasidone on voltage-dependent K+ channels in coronary arterial smooth muscle cells 2020transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We investigated the effect of ziprasidone, a widely used treatment for schizophrenia, on voltage-dependent K+ (Kv) channels of coronary arterial smooth muscle cells using the patch-clamp technique. Ziprasidone dose-dependently inhibited Kv channels with an IC50 value of 0.39 ± 0.06 μM and a Hill coefficient of 0.62 ± 0.03. Although ziprasidone had no effect on the steady-state inactivation kinetics of the Kv channels, the steady-state activation curve shifted towards a more positive potential. These results suggest that ziprasidone inhibits Kv channels by targeting their voltage sensors. The recovery time constant of Kv channel inactivation was increased in the presence of ziprasidone. Furthermore, application of train steps (of 1 and 2 Hz) in the presence of ziprasidone led to a progressive increase in the blockade of Kv currents, suggesting that ziprasidone-induced inhibition of Kv channels is use (state)-dependent. Pretreatment with Kv1.5, Kv2.1, and Kv7 subtype inhibitors partially suppressed the ziprasidone-induced inhibition of Kv currents. These results suggest that ziprasidone inhibits vascular Kv channels through its effect on gating properties. The Kv channel-inhibiting action of ziprasidone is concentration- and use (state)-depedent. We investigated the effect of ziprasidone, a widely used treatment for schizophrenia, on voltage-dependent K+ (Kv) channels of coronary arterial smooth muscle cells using the patch-clamp technique. Ziprasidone dose-dependently inhibited Kv channels with an IC50 value of 0.39 ± 0.06 μM and a Hill coefficient of 0.62 ± 0.03. Although ziprasidone had no effect on the steady-state inactivation kinetics of the Kv channels, the steady-state activation curve shifted towards a more positive potential. These results suggest that ziprasidone inhibits Kv channels by targeting their voltage sensors. The recovery time constant of Kv channel inactivation was increased in the presence of ziprasidone. Furthermore, application of train steps (of 1 and 2 Hz) in the presence of ziprasidone led to a progressive increase in the blockade of Kv currents, suggesting that ziprasidone-induced inhibition of Kv channels is use (state)-dependent. Pretreatment with Kv1.5, Kv2.1, and Kv7 subtype inhibitors partially suppressed the ziprasidone-induced inhibition of Kv currents. These results suggest that ziprasidone inhibits vascular Kv channels through its effect on gating properties. The Kv channel-inhibiting action of ziprasidone is concentration- and use (state)-depedent. Smooth muscle cell Elsevier Atypical antipsychotics Elsevier Voltage-dependent K+ channel Elsevier Ziprasione Elsevier Seo, Mi Seon oth Jung, Hee Seok oth Heo, Ryeon oth Kang, Minji oth Ha, Kwon-Soo oth Park, Hongzoo oth Park, Won Sun oth Enthalten in Academic Press Zhang, Zhikun ELSEVIER Preparation and characterization of glass-ceramics via co-sintering of coal fly ash and oil shale ash-derived amorphous slag 2019 BBRC Orlando, Fla (DE-627)ELV002811154 volume:529 year:2020 number:2 day:20 month:08 pages:191-197 extent:7 https://doi.org/10.1016/j.bbrc.2020.06.038 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 51.60 Keramische Werkstoffe Hartstoffe Werkstoffkunde VZ 58.45 Gesteinshüttenkunde VZ AR 529 2020 2 20 0820 191-197 7 |
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10.1016/j.bbrc.2020.06.038 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001230.pica (DE-627)ELV050887483 (ELSEVIER)S0006-291X(20)31245-6 DE-627 ger DE-627 rakwb eng 670 VZ 51.60 bkl 58.45 bkl An, Jin Ryeol verfasserin aut The inhibitory effect of ziprasidone on voltage-dependent K+ channels in coronary arterial smooth muscle cells 2020transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We investigated the effect of ziprasidone, a widely used treatment for schizophrenia, on voltage-dependent K+ (Kv) channels of coronary arterial smooth muscle cells using the patch-clamp technique. Ziprasidone dose-dependently inhibited Kv channels with an IC50 value of 0.39 ± 0.06 μM and a Hill coefficient of 0.62 ± 0.03. Although ziprasidone had no effect on the steady-state inactivation kinetics of the Kv channels, the steady-state activation curve shifted towards a more positive potential. These results suggest that ziprasidone inhibits Kv channels by targeting their voltage sensors. The recovery time constant of Kv channel inactivation was increased in the presence of ziprasidone. Furthermore, application of train steps (of 1 and 2 Hz) in the presence of ziprasidone led to a progressive increase in the blockade of Kv currents, suggesting that ziprasidone-induced inhibition of Kv channels is use (state)-dependent. Pretreatment with Kv1.5, Kv2.1, and Kv7 subtype inhibitors partially suppressed the ziprasidone-induced inhibition of Kv currents. These results suggest that ziprasidone inhibits vascular Kv channels through its effect on gating properties. The Kv channel-inhibiting action of ziprasidone is concentration- and use (state)-depedent. We investigated the effect of ziprasidone, a widely used treatment for schizophrenia, on voltage-dependent K+ (Kv) channels of coronary arterial smooth muscle cells using the patch-clamp technique. Ziprasidone dose-dependently inhibited Kv channels with an IC50 value of 0.39 ± 0.06 μM and a Hill coefficient of 0.62 ± 0.03. Although ziprasidone had no effect on the steady-state inactivation kinetics of the Kv channels, the steady-state activation curve shifted towards a more positive potential. These results suggest that ziprasidone inhibits Kv channels by targeting their voltage sensors. The recovery time constant of Kv channel inactivation was increased in the presence of ziprasidone. Furthermore, application of train steps (of 1 and 2 Hz) in the presence of ziprasidone led to a progressive increase in the blockade of Kv currents, suggesting that ziprasidone-induced inhibition of Kv channels is use (state)-dependent. Pretreatment with Kv1.5, Kv2.1, and Kv7 subtype inhibitors partially suppressed the ziprasidone-induced inhibition of Kv currents. These results suggest that ziprasidone inhibits vascular Kv channels through its effect on gating properties. The Kv channel-inhibiting action of ziprasidone is concentration- and use (state)-depedent. Smooth muscle cell Elsevier Atypical antipsychotics Elsevier Voltage-dependent K+ channel Elsevier Ziprasione Elsevier Seo, Mi Seon oth Jung, Hee Seok oth Heo, Ryeon oth Kang, Minji oth Ha, Kwon-Soo oth Park, Hongzoo oth Park, Won Sun oth Enthalten in Academic Press Zhang, Zhikun ELSEVIER Preparation and characterization of glass-ceramics via co-sintering of coal fly ash and oil shale ash-derived amorphous slag 2019 BBRC Orlando, Fla (DE-627)ELV002811154 volume:529 year:2020 number:2 day:20 month:08 pages:191-197 extent:7 https://doi.org/10.1016/j.bbrc.2020.06.038 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 51.60 Keramische Werkstoffe Hartstoffe Werkstoffkunde VZ 58.45 Gesteinshüttenkunde VZ AR 529 2020 2 20 0820 191-197 7 |
| allfieldsSound |
10.1016/j.bbrc.2020.06.038 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001230.pica (DE-627)ELV050887483 (ELSEVIER)S0006-291X(20)31245-6 DE-627 ger DE-627 rakwb eng 670 VZ 51.60 bkl 58.45 bkl An, Jin Ryeol verfasserin aut The inhibitory effect of ziprasidone on voltage-dependent K+ channels in coronary arterial smooth muscle cells 2020transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier We investigated the effect of ziprasidone, a widely used treatment for schizophrenia, on voltage-dependent K+ (Kv) channels of coronary arterial smooth muscle cells using the patch-clamp technique. Ziprasidone dose-dependently inhibited Kv channels with an IC50 value of 0.39 ± 0.06 μM and a Hill coefficient of 0.62 ± 0.03. Although ziprasidone had no effect on the steady-state inactivation kinetics of the Kv channels, the steady-state activation curve shifted towards a more positive potential. These results suggest that ziprasidone inhibits Kv channels by targeting their voltage sensors. The recovery time constant of Kv channel inactivation was increased in the presence of ziprasidone. Furthermore, application of train steps (of 1 and 2 Hz) in the presence of ziprasidone led to a progressive increase in the blockade of Kv currents, suggesting that ziprasidone-induced inhibition of Kv channels is use (state)-dependent. Pretreatment with Kv1.5, Kv2.1, and Kv7 subtype inhibitors partially suppressed the ziprasidone-induced inhibition of Kv currents. These results suggest that ziprasidone inhibits vascular Kv channels through its effect on gating properties. The Kv channel-inhibiting action of ziprasidone is concentration- and use (state)-depedent. We investigated the effect of ziprasidone, a widely used treatment for schizophrenia, on voltage-dependent K+ (Kv) channels of coronary arterial smooth muscle cells using the patch-clamp technique. Ziprasidone dose-dependently inhibited Kv channels with an IC50 value of 0.39 ± 0.06 μM and a Hill coefficient of 0.62 ± 0.03. Although ziprasidone had no effect on the steady-state inactivation kinetics of the Kv channels, the steady-state activation curve shifted towards a more positive potential. These results suggest that ziprasidone inhibits Kv channels by targeting their voltage sensors. The recovery time constant of Kv channel inactivation was increased in the presence of ziprasidone. Furthermore, application of train steps (of 1 and 2 Hz) in the presence of ziprasidone led to a progressive increase in the blockade of Kv currents, suggesting that ziprasidone-induced inhibition of Kv channels is use (state)-dependent. Pretreatment with Kv1.5, Kv2.1, and Kv7 subtype inhibitors partially suppressed the ziprasidone-induced inhibition of Kv currents. These results suggest that ziprasidone inhibits vascular Kv channels through its effect on gating properties. The Kv channel-inhibiting action of ziprasidone is concentration- and use (state)-depedent. Smooth muscle cell Elsevier Atypical antipsychotics Elsevier Voltage-dependent K+ channel Elsevier Ziprasione Elsevier Seo, Mi Seon oth Jung, Hee Seok oth Heo, Ryeon oth Kang, Minji oth Ha, Kwon-Soo oth Park, Hongzoo oth Park, Won Sun oth Enthalten in Academic Press Zhang, Zhikun ELSEVIER Preparation and characterization of glass-ceramics via co-sintering of coal fly ash and oil shale ash-derived amorphous slag 2019 BBRC Orlando, Fla (DE-627)ELV002811154 volume:529 year:2020 number:2 day:20 month:08 pages:191-197 extent:7 https://doi.org/10.1016/j.bbrc.2020.06.038 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 51.60 Keramische Werkstoffe Hartstoffe Werkstoffkunde VZ 58.45 Gesteinshüttenkunde VZ AR 529 2020 2 20 0820 191-197 7 |
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Enthalten in Preparation and characterization of glass-ceramics via co-sintering of coal fly ash and oil shale ash-derived amorphous slag Orlando, Fla volume:529 year:2020 number:2 day:20 month:08 pages:191-197 extent:7 |
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inhibitory effect of ziprasidone on voltage-dependent k+ channels in coronary arterial smooth muscle cells |
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The inhibitory effect of ziprasidone on voltage-dependent K+ channels in coronary arterial smooth muscle cells |
| abstract |
We investigated the effect of ziprasidone, a widely used treatment for schizophrenia, on voltage-dependent K+ (Kv) channels of coronary arterial smooth muscle cells using the patch-clamp technique. Ziprasidone dose-dependently inhibited Kv channels with an IC50 value of 0.39 ± 0.06 μM and a Hill coefficient of 0.62 ± 0.03. Although ziprasidone had no effect on the steady-state inactivation kinetics of the Kv channels, the steady-state activation curve shifted towards a more positive potential. These results suggest that ziprasidone inhibits Kv channels by targeting their voltage sensors. The recovery time constant of Kv channel inactivation was increased in the presence of ziprasidone. Furthermore, application of train steps (of 1 and 2 Hz) in the presence of ziprasidone led to a progressive increase in the blockade of Kv currents, suggesting that ziprasidone-induced inhibition of Kv channels is use (state)-dependent. Pretreatment with Kv1.5, Kv2.1, and Kv7 subtype inhibitors partially suppressed the ziprasidone-induced inhibition of Kv currents. These results suggest that ziprasidone inhibits vascular Kv channels through its effect on gating properties. The Kv channel-inhibiting action of ziprasidone is concentration- and use (state)-depedent. |
| abstractGer |
We investigated the effect of ziprasidone, a widely used treatment for schizophrenia, on voltage-dependent K+ (Kv) channels of coronary arterial smooth muscle cells using the patch-clamp technique. Ziprasidone dose-dependently inhibited Kv channels with an IC50 value of 0.39 ± 0.06 μM and a Hill coefficient of 0.62 ± 0.03. Although ziprasidone had no effect on the steady-state inactivation kinetics of the Kv channels, the steady-state activation curve shifted towards a more positive potential. These results suggest that ziprasidone inhibits Kv channels by targeting their voltage sensors. The recovery time constant of Kv channel inactivation was increased in the presence of ziprasidone. Furthermore, application of train steps (of 1 and 2 Hz) in the presence of ziprasidone led to a progressive increase in the blockade of Kv currents, suggesting that ziprasidone-induced inhibition of Kv channels is use (state)-dependent. Pretreatment with Kv1.5, Kv2.1, and Kv7 subtype inhibitors partially suppressed the ziprasidone-induced inhibition of Kv currents. These results suggest that ziprasidone inhibits vascular Kv channels through its effect on gating properties. The Kv channel-inhibiting action of ziprasidone is concentration- and use (state)-depedent. |
| abstract_unstemmed |
We investigated the effect of ziprasidone, a widely used treatment for schizophrenia, on voltage-dependent K+ (Kv) channels of coronary arterial smooth muscle cells using the patch-clamp technique. Ziprasidone dose-dependently inhibited Kv channels with an IC50 value of 0.39 ± 0.06 μM and a Hill coefficient of 0.62 ± 0.03. Although ziprasidone had no effect on the steady-state inactivation kinetics of the Kv channels, the steady-state activation curve shifted towards a more positive potential. These results suggest that ziprasidone inhibits Kv channels by targeting their voltage sensors. The recovery time constant of Kv channel inactivation was increased in the presence of ziprasidone. Furthermore, application of train steps (of 1 and 2 Hz) in the presence of ziprasidone led to a progressive increase in the blockade of Kv currents, suggesting that ziprasidone-induced inhibition of Kv channels is use (state)-dependent. Pretreatment with Kv1.5, Kv2.1, and Kv7 subtype inhibitors partially suppressed the ziprasidone-induced inhibition of Kv currents. These results suggest that ziprasidone inhibits vascular Kv channels through its effect on gating properties. The Kv channel-inhibiting action of ziprasidone is concentration- and use (state)-depedent. |
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