Fast whole-brain imaging of seizures in zebrafish larvae by two-photon light-sheet microscopy
Authors: De Vito G., Turrini L., Müllenbroich C., Ricci P., Sancataldo G., Mazzamuto G., Tiso N., Sacconi L., Fanelli D., Silvestri L., Vanzi F., Pavone FS.
Autors Affiliation: University of Florence, Department of Neuroscience, Psychology, Drug Research and Child Health, Viale Pieraccini 6, Florence, Italy, 50139, Italy European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, Sesto Fiorentino 50019, Italy University of Florence, Department of Physics and Astronomy, Via Sansone 1, Sesto Fiorentino 50019, Italy School of Physics and Astronomy, Kelvin Building, University of Glasgow, G12 8QQ, Glasgow, UK National Institute of Optics, National Research Council, Via Nello Carrara 1, Sesto Fiorentino 50019, Italy University of Padova, Department of Biology, Via U. Bassi 58/B, Padova 35131, Italy University of Florence, Department of Biology, Via Madonna del Piano 6, Sesto Fiorentino 50019, Italy
Abstract: Light-sheet fluorescence microscopy (LSFM) enables real-time whole-brain functional imaging in zebrafish larvae. Conventional one-photon LSFM can however induce undesirable visual stimulation due to the use of visible excitation light. The use of two-photon (2P) excitation, employing near-infrared invisible light, provides unbiased investigation of neuronal circuit dynamics. However, due to the low efficiency of the 2P absorption process, the imaging speed of this technique is typically limited by the signal-to-noise-ratio. Here, we describe a 2P LSFM setup designed for non-invasive imaging that enables quintuplicating state-of-the-art volumetric acquisition rate of the larval zebrafish brain (5 Hz) while keeping low the laser intensity on the specimen. We applied our system to the study of pharmacologically-induced acute seizures, characterizing the spatial-temporal dynamics of pathological activity and describing for the first time the appearance of caudo-rostral ictal waves (CRIWs).
Journal/Review: BIOMEDICAL OPTICS EXPRESS
Volume: 13 Pages from: 1516 to: 1536
KeyWords: two-photon, light-sheet microscopy, zebrafish, seizure, brain imagingDOI: 10.1364/BOE.434146Citations: 3data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2023-03-26References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here