Effect of 2-Aminoethoxydiphenyl Borate (2-APB) on Heart Rate and Relation with Suppressed Calcium-Activated Potassium Channels: Larval <i>Drosophila</i> Model
Cardiac contractile cells depend on calcium in order to function. Understanding the regulation of calcium influx, efflux, and release from the sarcoplasmic reticulum is essential. The focus of this investigation is to address how a reduction of functional Ca<sup>2+</sup>-activated K<s...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Applied Biosciences |
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| Online Access: | https://www.mdpi.com/2813-0464/2/2/17 |
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| author | Nicole Hensley Elizabeth R. Elliott Maya O. Abul-Khoudoud Robin L. Cooper |
| author_facet | Nicole Hensley Elizabeth R. Elliott Maya O. Abul-Khoudoud Robin L. Cooper |
| author_sort | Nicole Hensley |
| collection | DOAJ |
| description | Cardiac contractile cells depend on calcium in order to function. Understanding the regulation of calcium influx, efflux, and release from the sarcoplasmic reticulum is essential. The focus of this investigation is to address how a reduction of functional Ca<sup>2+</sup>-activated K<sup>+</sup> (K<sub>Ca</sub>) channels, via a mutational line, might impact the heart rate in larva when the SER is also modulated through Ca<sup>2+</sup> loading and stimulation. The larval heart tube is exposed in situ and flushed with saline. With a known saline composition, a potential therapeutic pharmacological agent, 2-Aminoethyl diphenylborinate (2-APB), was examined for its effect on heart rate, as well as to determine the contribution from K<sub>Ca</sub> channels. In this study, it was determined that mutation in the K(Ca) channel (i.e., <i>Slo</i>) showed a different trend than the wild-type CS strain. Exposure to high concentrations of 50 µM 2-APB decreased heart rate in the <i>Slo</i> strain and increased it in the wild-type CS strain. Serotonin increased heart rate in both thapsigargin- and 2-APB-treated larvae, with no significant difference between the strains. |
| first_indexed | 2024-03-11T02:49:46Z |
| format | Article |
| id | doaj.art-729e624979ef443dbdffee4a3df206b9 |
| institution | Directory Open Access Journal |
| issn | 2813-0464 |
| language | English |
| last_indexed | 2024-03-11T02:49:46Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Biosciences |
| spelling | doaj.art-729e624979ef443dbdffee4a3df206b92023-11-18T09:04:33ZengMDPI AGApplied Biosciences2813-04642023-05-012223624810.3390/applbiosci2020017Effect of 2-Aminoethoxydiphenyl Borate (2-APB) on Heart Rate and Relation with Suppressed Calcium-Activated Potassium Channels: Larval <i>Drosophila</i> ModelNicole Hensley0Elizabeth R. Elliott1Maya O. Abul-Khoudoud2Robin L. Cooper3Department of Biology, University of Kentucky, Lexington, KY 40506-0225, USADepartment of Biology, University of Kentucky, Lexington, KY 40506-0225, USADepartment of Biology, University of Kentucky, Lexington, KY 40506-0225, USADepartment of Biology, University of Kentucky, Lexington, KY 40506-0225, USACardiac contractile cells depend on calcium in order to function. Understanding the regulation of calcium influx, efflux, and release from the sarcoplasmic reticulum is essential. The focus of this investigation is to address how a reduction of functional Ca<sup>2+</sup>-activated K<sup>+</sup> (K<sub>Ca</sub>) channels, via a mutational line, might impact the heart rate in larva when the SER is also modulated through Ca<sup>2+</sup> loading and stimulation. The larval heart tube is exposed in situ and flushed with saline. With a known saline composition, a potential therapeutic pharmacological agent, 2-Aminoethyl diphenylborinate (2-APB), was examined for its effect on heart rate, as well as to determine the contribution from K<sub>Ca</sub> channels. In this study, it was determined that mutation in the K(Ca) channel (i.e., <i>Slo</i>) showed a different trend than the wild-type CS strain. Exposure to high concentrations of 50 µM 2-APB decreased heart rate in the <i>Slo</i> strain and increased it in the wild-type CS strain. Serotonin increased heart rate in both thapsigargin- and 2-APB-treated larvae, with no significant difference between the strains.https://www.mdpi.com/2813-0464/2/2/17calcium<i>Drosophila</i>heart ratepharmacologypotassium channel |
| spellingShingle | Nicole Hensley Elizabeth R. Elliott Maya O. Abul-Khoudoud Robin L. Cooper Effect of 2-Aminoethoxydiphenyl Borate (2-APB) on Heart Rate and Relation with Suppressed Calcium-Activated Potassium Channels: Larval <i>Drosophila</i> Model Applied Biosciences calcium <i>Drosophila</i> heart rate pharmacology potassium channel |
| title | Effect of 2-Aminoethoxydiphenyl Borate (2-APB) on Heart Rate and Relation with Suppressed Calcium-Activated Potassium Channels: Larval <i>Drosophila</i> Model |
| title_full | Effect of 2-Aminoethoxydiphenyl Borate (2-APB) on Heart Rate and Relation with Suppressed Calcium-Activated Potassium Channels: Larval <i>Drosophila</i> Model |
| title_fullStr | Effect of 2-Aminoethoxydiphenyl Borate (2-APB) on Heart Rate and Relation with Suppressed Calcium-Activated Potassium Channels: Larval <i>Drosophila</i> Model |
| title_full_unstemmed | Effect of 2-Aminoethoxydiphenyl Borate (2-APB) on Heart Rate and Relation with Suppressed Calcium-Activated Potassium Channels: Larval <i>Drosophila</i> Model |
| title_short | Effect of 2-Aminoethoxydiphenyl Borate (2-APB) on Heart Rate and Relation with Suppressed Calcium-Activated Potassium Channels: Larval <i>Drosophila</i> Model |
| title_sort | effect of 2 aminoethoxydiphenyl borate 2 apb on heart rate and relation with suppressed calcium activated potassium channels larval i drosophila i model |
| topic | calcium <i>Drosophila</i> heart rate pharmacology potassium channel |
| url | https://www.mdpi.com/2813-0464/2/2/17 |
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