Cong Zhang, Samuel Bélanger, Philippe Pouliot et Frédéric Lesage
Article de revue (2015)
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Libre accès au plein texte de ce document Version officielle de l'éditeur Conditions d'utilisation: Creative Commons: Attribution (CC BY) Télécharger (506kB) |
Abstract
In this work a method for measuring brain oxygen partial pressure with confocal phosphorescence lifetime microscopy system is reported. When used in conjunction with a dendritic phosphorescent probe, Oxyphor G4, this system enabled minimally invasive measurements of oxygen partial pressure (pO2) in cerebral tissue with high spatial and temporal resolution during 4-AP induced epileptic seizures. Investigating epileptic events, we characterized the spatio-temporal distribution of the "initial dip" in pO2 near the probe injection site and along nearby arterioles. Our results reveal a correlation between the percent change in the pO2 signal during the "initial dip" and the duration of seizure-like activity, which can help localize the epileptic focus and predict the length of seizure.
Mots clés
| Département: | Département de génie électrique |
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| Organismes subventionnaires: | Canadian Institutes of Health Research, Réseau de Bioimagerie du Québec (RBIQ), Chinese Science Foundation (CSC) |
| Numéro de subvention: | RN299166 |
| URL de PolyPublie: | https://publications.polymtl.ca/3486/ |
| Titre de la revue: | PLOS One (vol. 10, no 8) |
| Maison d'édition: | PLOS |
| DOI: | 10.1371/journal.pone.0135536 |
| URL officielle: | https://doi.org/10.1371/journal.pone.0135536 |
| Date du dépôt: | 23 nov. 2018 10:29 |
| Dernière modification: | 07 avr. 2025 17:57 |
| Citer en APA 7: | Zhang, C., Bélanger, S., Pouliot, P., & Lesage, F. (2015). Measurement of Local Partial Pressure of Oxygen in the Brain Tissue under Normoxia and Epilepsy with Phosphorescence Lifetime Microscopy. PLOS One, 10(8). https://doi.org/10.1371/journal.pone.0135536 |
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