Cited by 32Neuropeptides and Animal PhysiologyTraumatic Brain Injury and Neurovascular DisturbancesMigraine and Headache Studies

Differential activation of ERK, p38, and JNK MAPK by nociceptin/orphanin FQ in the potentiation of prostaglandin cerebrovasoconstriction after brain injury

Armstead, William M.·2006·European Journal of Pharmacology

Abstract

Fluid percussion brain injury elevates the cerebrospinal fluid (CSF) concentration of the opioid nociceptin/orphanin FQ (N/OFQ), which potentiates vasoconstriction to the prostaglandins U 46619, a thromboxane A(2) mimic, and prostaglandin (PG)F(2a). This study investigated the role of the extracellular signal-regulated kinase (ERK), p38, and c-Jun N-terminal kinase (JNK) isoforms of mitogen activated protein kinase (MAPK) in potentiated prostaglandin vasoconstriction after brain injury and the relationship of brain injury induced release of N/OFQ to MAPK. Pial artery diameter was measured with a video microscaler by observation through a glass coverslip cranial window placed in the parietal cortex of newborn pigs. Brain injury potentiated U 46619 induced pial artery vasoconstriction but U 0126 and SB 203580 (10(-6) and 10(-5) M, respectively) (ERK and p38 MAPK inhibitors) blocked the potentiation. In contrast, administration of SP 600125 (10(-6) and 10(-5) M) (JNK MAPK inhibitor) only attenuated brain injury induced U 46619 potentiation and such responses were significantly different than that in the presence of either U 0126 or SB 203580 after FPI. Co-administration of N/OFQ (10(-10) M), the CSF concentration observed after brain injury, with U 46619 or PGF(2a) under non brain injury conditions potentiated prostaglandin vasoconstriction but U 0126 and SB 203580 blocked such potentiation. Administration of SP 600125 modestly attenuated prostaglandin potentiation by N/OFQ. These data show that activation of ERK and p38 primarily contribute to potentiation of prostaglandin constriction after brain injury. These data suggest that N/OFQ differentially activates ERK, p38, and JNK MAPK to contribute to potentiated prostaglandin vasoconstriction after fluid percussion brain injury.

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Crossref · 10.1016/j.ejphar.2005.08.059

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  • The mechanisms by which cerebral ischemia occurs comprise morphological injury, hypotension in the presence of autoregulatory failure, inadequate availability of cholinergic neurotransmitters or nitric oxide, and potentiation of prostaglandin-induced vasoconstriction.

    “The mechanisms by which cerebral ischemia occurs comprise morphological injury, such as vessel distortion as a result of mechanical displacement, hypotension in the presence of autoregulatory failure, inadequate availability of cholinergic neurotransmitters or nitric oxide, and potentiation of prostaglandin-induced vasoconstriction (112-115).”

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Authors
Armstead, W. M.
Affiliations
University of Pennsylvania (US)
Corresponding author
Armstead, William M.
Venue
European Journal of Pharmacology
Publisher
Elsevier BV
Published
2006-01
Volume
529
Issue
1-3
Pages
129-135
ISSN
0014-2999 (ISSN-L)
OpenAlex
W2059386862
Cited by
32
References
30
Citations by year
2025: 1 · 2024: 3 · 2023: 2 · 2022: 2 · 2021: 2 · 2020: 1 · 2019: 2 · 2018: 2 · 2017: 1 · 2016: 4 · 2015: 4
FWCI
0.48
Type
journal article
Language
en
Open access
closed
Locations
  • European Journal of Pharmacology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • University of Pennsylvania
  • National Institutes of Health
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
  • Health Sciences › Medicine › Neurology › Traumatic Brain Injury and Neurovascular Disturbances
  • Health Sciences › Medicine › Psychiatry and Mental health › Migraine and Headache Studies
Keywords
nociceptin/orphanin FQ, ERK, p38 MAPK, JNK, MAPK signaling, fluid percussion injury, thromboxane A2, prostaglandin F2alpha, cerebrovascular response, MAPK inhibitors, newborn pigs
MeSH terms
Nociceptin, Animals, Brain Injuries, Cerebrovascular Circulation, Disease Models, Animal, Drug Interactions, Enzyme Activation, Enzyme Inhibitors, Female, Male, Prostaglandins, Swine, Vasoconstriction, Opioid Peptides, Mitogen-Activated Protein Kinases, JNK Mitogen-Activated Protein Kinases, Extracellular Signal-Regulated MAP Kinases, p38 Mitogen-Activated Protein Kinases

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