| Autor: |
Diéssica Padilha Dalenogare, Camila Ritter, Fernando Roberto Antunes Bellinaso, Sabrina Qader Kudsi, Gabriele Cheiran Pereira, Maria Fernanda Pessano Fialho, Débora Denardin Lückemeyer, Caren Tatiane de David Antoniazzi, Lorenzo Landini, Juliano Ferreira, Guilherme Vargas Bochi, Sara Marchesan Oliveira, Francesco De Logu, Romina Nassini, Pierangelo Geppetti, Gabriela Trevisan |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Pharmaceuticals, Vol 14, Iss 8, p 831 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
1424-8247 |
| DOI: |
10.3390/ph14080831 |
| Popis: |
Headaches are frequently described in progressive multiple sclerosis (PMS) patients, but their mechanism remains unknown. Transient receptor potential ankyrin 1 (TRPA1) was involved in neuropathic nociception in a model of PMS induced by experimental autoimmune encephalomyelitis (PMS-EAE), and TRPA1 activation causes periorbital and facial nociception. Thus, our purpose was to observe the development of periorbital mechanical allodynia (PMA) in a PMS-EAE model and evaluate the role of TRPA1 in periorbital nociception. Female PMS-EAE mice elicited PMA from day 7 to 14 days after induction. The antimigraine agents olcegepant and sumatriptan were able to reduce PMA. The PMA was diminished by the TRPA1 antagonists HC-030031, A-967079, metamizole and propyphenazone and was absent in TRPA1-deficient mice. Enhanced levels of TRPA1 endogenous agonists and NADPH oxidase activity were detected in the trigeminal ganglion of PMS-EAE mice. The administration of the anti-oxidants apocynin (an NADPH oxidase inhibitor) or alpha-lipoic acid (a sequestrant of reactive oxygen species), resulted in PMA reduction. These results suggest that generation of TRPA1 endogenous agonists in the PMS-EAE mouse model may sensitise TRPA1 in trigeminal nociceptors to elicit PMA. Thus, this ion channel could be a potential therapeutic target for the treatment of headache in PMS patients. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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