Regulation of myocardial contraction as revealed by intracellular Ca2+ measurements using aequorin
Abstract Of the ions involved in myocardial function, Ca2+ is the most important. Ca2+ is crucial to the process that allows myocardium to repeatedly contract and relax in a well-organized fashion; it is the process called excitation–contraction coupling. In order, therefore, for accurate comprehens...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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BMC
2024-02-01
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| Series: | Journal of Physiological Sciences |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s12576-024-00906-7 |
| _version_ | 1797233784833179648 |
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| author | Satoshi Kurihara Norio Fukuda |
| author_facet | Satoshi Kurihara Norio Fukuda |
| author_sort | Satoshi Kurihara |
| collection | DOAJ |
| description | Abstract Of the ions involved in myocardial function, Ca2+ is the most important. Ca2+ is crucial to the process that allows myocardium to repeatedly contract and relax in a well-organized fashion; it is the process called excitation–contraction coupling. In order, therefore, for accurate comprehension of the physiology of the heart, it is fundamentally important to understand the detailed mechanism by which the intracellular Ca2+ concentration is regulated to elicit excitation–contraction coupling. Aequorin was discovered by Shimomura, Johnson and Saiga in 1962. By taking advantage of the fact that aequorin emits blue light when it binds to Ca2+ within the physiologically relevant concentration range, in the 1970s and 1980s, physiologists microinjected it into myocardial preparations. By doing so, they proved that Ca2+ transients occur upon membrane depolarization, and tension development (i.e., actomyosin interaction) subsequently follows, dramatically advancing the research on cardiac excitation–contraction coupling. |
| first_indexed | 2024-03-07T15:16:25Z |
| format | Article |
| id | doaj.art-cebe351a76e54a3da438b921e6c27db5 |
| institution | Directory Open Access Journal |
| issn | 1880-6562 |
| language | English |
| last_indexed | 2024-04-24T16:21:41Z |
| publishDate | 2024-02-01 |
| publisher | BMC |
| record_format | Article |
| series | Journal of Physiological Sciences |
| spelling | doaj.art-cebe351a76e54a3da438b921e6c27db52024-03-31T11:12:37ZengBMCJournal of Physiological Sciences1880-65622024-02-0174111310.1186/s12576-024-00906-7Regulation of myocardial contraction as revealed by intracellular Ca2+ measurements using aequorinSatoshi Kurihara0Norio Fukuda1Department of Cell Physiology, The Jikei University School of MedicineDepartment of Cell Physiology, The Jikei University School of MedicineAbstract Of the ions involved in myocardial function, Ca2+ is the most important. Ca2+ is crucial to the process that allows myocardium to repeatedly contract and relax in a well-organized fashion; it is the process called excitation–contraction coupling. In order, therefore, for accurate comprehension of the physiology of the heart, it is fundamentally important to understand the detailed mechanism by which the intracellular Ca2+ concentration is regulated to elicit excitation–contraction coupling. Aequorin was discovered by Shimomura, Johnson and Saiga in 1962. By taking advantage of the fact that aequorin emits blue light when it binds to Ca2+ within the physiologically relevant concentration range, in the 1970s and 1980s, physiologists microinjected it into myocardial preparations. By doing so, they proved that Ca2+ transients occur upon membrane depolarization, and tension development (i.e., actomyosin interaction) subsequently follows, dramatically advancing the research on cardiac excitation–contraction coupling.https://doi.org/10.1186/s12576-024-00906-7CalciumExcitation–contraction couplingHeartMuscle |
| spellingShingle | Satoshi Kurihara Norio Fukuda Regulation of myocardial contraction as revealed by intracellular Ca2+ measurements using aequorin Journal of Physiological Sciences Calcium Excitation–contraction coupling Heart Muscle |
| title | Regulation of myocardial contraction as revealed by intracellular Ca2+ measurements using aequorin |
| title_full | Regulation of myocardial contraction as revealed by intracellular Ca2+ measurements using aequorin |
| title_fullStr | Regulation of myocardial contraction as revealed by intracellular Ca2+ measurements using aequorin |
| title_full_unstemmed | Regulation of myocardial contraction as revealed by intracellular Ca2+ measurements using aequorin |
| title_short | Regulation of myocardial contraction as revealed by intracellular Ca2+ measurements using aequorin |
| title_sort | regulation of myocardial contraction as revealed by intracellular ca2 measurements using aequorin |
| topic | Calcium Excitation–contraction coupling Heart Muscle |
| url | https://doi.org/10.1186/s12576-024-00906-7 |
| work_keys_str_mv | AT satoshikurihara regulationofmyocardialcontractionasrevealedbyintracellularca2measurementsusingaequorin AT noriofukuda regulationofmyocardialcontractionasrevealedbyintracellularca2measurementsusingaequorin |