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KMID : 1189320230170061043
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Asian Spine Journal
2023 Volume.17 No. 6 p.1043 ~ p.1050
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Inhibition of Neurogenic Inflammatory Pathways Associated with the Reduction in Discogenic Back Pain
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Jose A. Canseco
Hannah A. Levy
Brian A. Karamian
Olivia Blaber
Michael Chang
Neil Patel
John Curran
Alan S. Hilibrand
Gregory D. Schroeder
Alexander R. Vaccaro
Dessislava Z. Markova
David E. Surrey
Christopher K. Kepler
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Abstract
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Study Design: Retrospective cohort study.
Purpose: This study aimed to determine whether the initiation of anti-calcitonin gene-related peptide (CGRP inhibitor) medication therapy for migraines was also associated with improvements in back/neck pain, mobility, and function in a patient population with comorbid degenerative spinal disease and migraine.
Overview of Literature: CGRP upregulates pro-inflammatory cytokines such as tumor necrosis factor-α, interleukin-6, brain-derived neurotrophic factor, and nerve growth factor in spinal spondylotic disease, which results in disc degeneration and sensitization of nociceptive neurons. Although CGRP inhibitors can quell neurogenic inflammation in migraines, their off-site efficacy as a therapeutic target for discogenic back/neck pain conditions remains unknown.
Methods: All adult patients diagnosed with spinal spondylosis and migraine treated with CGRP inhibitors at a single academic institution between 2017 and 2020 were retrospectively identified. Patient demographic and medical data, follow-up duration, migraine severity and frequency, spinal pain, functional status, and mobility before and after the administration of CGRP inhibitors were collected. Paired univariate analysis was conducted to determine significant changes in spinal pain, headache severity, and headache frequency before and after the administration of CGRP inhibitors. The correlation between changes in the spinal pain score and functional or mobility improvement was assessed with Spearman’s rho.
Results: In total, 56 patients were included. The mean follow-up time after the administration of CGRP inhibitors was 123 days for spinal pain visits and 129 days for migraine visits. Back/neck pain decreased significantly (p<0.001) from 6.30 to 4.36 after starting CGRP inhibitor therapy for migraine control. As recorded in the spine follow-up notes, 25% of patients experienced a functional improvement in the activities of daily living, and 17.5% experienced mobility improvement while taking CGRP inhibitors. Change in back/neck pain moderately correlated (ρ=?0.430) with functional improvement but was not correlated with mobility improvement (ρ=?0.052).
Conclusions: Patients taking CGRP inhibitors for chronic migraines with comorbid degenerative spinal conditions experienced significant off-target reduction of back/neck pain.
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KEYWORD
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Biologics, Anti-calcitonin gene-related peptide, Degenerative disc disease, Clinical outcomes
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