TY - JOUR TI - Calcium Signal Analysis in the Zebrafish Heart via Phase Matching of the Cardiac Cycle AU - Zhang, Raymond Jiahong AU - Vermot, Julien AU - Gherardi, Riccardo AU - Fukui, Hajime AU - Chow, Renee Wei-Yan VL - 14 IS - 10 PY - 2024 DA - 2024/05/20 SP - e4989 C1 - Bio-protocol 2024;14:e4989 DO - 10.21769/BioProtoc.4989 UR - https://doi.org/10.21769/BioProtoc.4989 AB - Calcium signalling in the endocardium is critical for heart valve development. Calcium ion pulses in the endocardium are generated in response to mechanical forces due to blood flow and can be visualised in the beating zebrafish heart using a genetically encoded calcium indicator such as GCaMP7a. Analysing these pulses is challenging because of the rapid movement of the heart during heartbeat. This protocol outlines an imaging analysis method used to phase-match the cardiac cycle in single z-slice movies of the beating heart, allowing easy measurement of the calcium signal. KW - Software development KW - Cardiac cycle KW - Heart valve development KW - Phase matching KW - Image analysis KW - Zebrafish embryos JF - Bio-protocol SN - 2331-8325 PB - Bio-protocol LLC. BIO101 - False