TY - JOUR
T1 - ROS/TRPA1/CGRP signaling mediates cortical spreading depression
AU - Jiang, Liwen
AU - Ma, Dongqing
AU - Grubb, Blair D.
AU - Wang, Minyan
N1 - Publisher Copyright:
© 2019 The Author(s).
PY - 2019/3/6
Y1 - 2019/3/6
N2 - Objectives: The transient receptor potential ankyrin A 1 (TRPA1) channel and calcitonin gene-related peptide (CGRP) are targets for migraine prophylaxis. This study aimed to understand their mechanisms in migraine by investigating the role of TRPA1 in cortical spreading depression (CSD) in vivo and exploring how reactive oxygen species (ROS)/TRPA1/CGRP interplay in regulating cortical susceptibility to CSD. Methods: Immunohistochemistry was used for detecting TRPA1 expression. CSD was induced by K + on the cerebral cortex, monitored using electrophysiology in rats, and intrinsic optical imaging in mouse brain slices, respectively. Drugs were perfused into contralateral ventricle of rats. Lipid peroxidation (malondialdehyde, MDA) analysis was used for indicating ROS level. Results: TRPA1 was expressed in cortical neurons and astrocytes of rats and mice. TRPA1 deactivation by an anti-TRPA1 antibody reduced cortical susceptibility to CSD in rats and decreased ipsilateral MDA level induced by CSD. In mouse brain slices, H 2 O 2 facilitated submaximal CSD induction, which disappeared by the antioxidant, tempol and the TRPA1 antagonist, A-967079; Consistently, TRPA1 activation reversed prolonged CSD latency and reduced magnitude by the antioxidant. Further, blockade of CGRP prolonged CSD latency, which was reversed by H 2 O 2 and the TRPA1 agonist, allyl-isothiocyanate, respectively. Conclusions: ROS/TRPA1/CGRP signaling plays a critical role in regulating cortical susceptibility to CSD. Inhibition ROS and deactivation of TRPA1 channels may have therapeutic benefits in preventing stress-triggered migraine via CGRP.
AB - Objectives: The transient receptor potential ankyrin A 1 (TRPA1) channel and calcitonin gene-related peptide (CGRP) are targets for migraine prophylaxis. This study aimed to understand their mechanisms in migraine by investigating the role of TRPA1 in cortical spreading depression (CSD) in vivo and exploring how reactive oxygen species (ROS)/TRPA1/CGRP interplay in regulating cortical susceptibility to CSD. Methods: Immunohistochemistry was used for detecting TRPA1 expression. CSD was induced by K + on the cerebral cortex, monitored using electrophysiology in rats, and intrinsic optical imaging in mouse brain slices, respectively. Drugs were perfused into contralateral ventricle of rats. Lipid peroxidation (malondialdehyde, MDA) analysis was used for indicating ROS level. Results: TRPA1 was expressed in cortical neurons and astrocytes of rats and mice. TRPA1 deactivation by an anti-TRPA1 antibody reduced cortical susceptibility to CSD in rats and decreased ipsilateral MDA level induced by CSD. In mouse brain slices, H 2 O 2 facilitated submaximal CSD induction, which disappeared by the antioxidant, tempol and the TRPA1 antagonist, A-967079; Consistently, TRPA1 activation reversed prolonged CSD latency and reduced magnitude by the antioxidant. Further, blockade of CGRP prolonged CSD latency, which was reversed by H 2 O 2 and the TRPA1 agonist, allyl-isothiocyanate, respectively. Conclusions: ROS/TRPA1/CGRP signaling plays a critical role in regulating cortical susceptibility to CSD. Inhibition ROS and deactivation of TRPA1 channels may have therapeutic benefits in preventing stress-triggered migraine via CGRP.
KW - Calcitonin gene-related peptide
KW - Cortical spreading depression
KW - Migraine
KW - Reactive oxygen species
KW - Transient receptor potential ankyrin a 1
UR - http://www.scopus.com/inward/record.url?scp=85062584472&partnerID=8YFLogxK
U2 - 10.1186/s10194-019-0978-z
DO - 10.1186/s10194-019-0978-z
M3 - Article
C2 - 30841847
AN - SCOPUS:85062584472
SN - 1129-2369
VL - 20
JO - Journal of Headache and Pain
JF - Journal of Headache and Pain
IS - 1
M1 - 25
ER -