{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,7]],"date-time":"2026-07-07T09:52:48Z","timestamp":1783417968879,"version":"3.54.6"},"reference-count":36,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2023,1,14]],"date-time":"2023-01-14T00:00:00Z","timestamp":1673654400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Finnish Academy","award":["325392"],"award-info":[{"award-number":["325392"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>It has been proposed that mechanosensitive Piezo1 channels trigger migraine pain in trigeminal nociceptive neurons, but the mechanosensitivity of satellite glial cells (SGCs) supporting neuronal sensitization has not been tested before. Moreover, tools to monitor previous Piezo1 activation are not available. Therefore, by using live calcium imaging with Fluo-4 AM and labeling with FM1-43 dye, we explored a new strategy to identify Piezo channels\u2019 activity in mouse trigeminal neurons, SGCs, and isolated meninges. The specific Piezo1 agonist Yoda1 induced calcium transients in both neurons and SGCs, suggesting the functional expression of Piezo1 channels in both types of cells. In Piezo1-transfected HEK cells, FM1-43 produced only a transient fluorescent response, whereas co-application with Yoda1 provided higher transient signals and a remarkable long-lasting FM1-43 \u2018tail response\u2019. A similar Piezo1-related FM1-43 trapping was observed in neurons and SGCs. The non-specific Piezo channel blocker, Gadolinium, inhibited the transient peak, confirming the involvement of Piezo1 receptors. Finally, FM1-43 labeling demonstrated previous activity in meningeal tissues 3.5 h after Yoda1 washout. Our data indicated that trigeminal neurons and SGCs express functional Piezo channels, and their activation provides sustained labeling with FM1-43. This long-lasting labelling can be used to monitor the ongoing and previous activation of Piezo1 channels in the trigeminal nociceptive system, which is implicated in migraine pain.<\/jats:p>","DOI":"10.3390\/ijms24021688","type":"journal-article","created":{"date-parts":[[2023,1,16]],"date-time":"2023-01-16T02:29:55Z","timestamp":1673836195000},"page":"1688","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["FM1-43 Dye Memorizes Piezo1 Activation in the Trigeminal Nociceptive System Implicated in Migraine Pain"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6417-5967","authenticated-orcid":false,"given":"Adriana","family":"Della Pietra","sequence":"first","affiliation":[{"name":"A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0515-3957","authenticated-orcid":false,"given":"Nikita","family":"Mikhailov","sequence":"additional","affiliation":[{"name":"A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rashid","family":"Giniatullin","sequence":"additional","affiliation":[{"name":"A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70211 Kuopio, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"800605","DOI":"10.3389\/fneur.2021.800605","article-title":"Migraine: A Review on Its History, Global Epidemiology, Risk Factors, and Comorbidities","volume":"12","author":"Amiri","year":"2022","journal-title":"Front. Neurol."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"227","DOI":"10.1111\/head.12034","article-title":"Migraine: The Seventh Disabler","volume":"53","author":"Steiner","year":"2013","journal-title":"Headache J. Head Face Pain"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"4","DOI":"10.1111\/head.13300","article-title":"A Phase-by-Phase Review of Migraine Pathophysiology","volume":"58","author":"Dodick","year":"2018","journal-title":"Headache J. 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