Effects of Spinal Manipulative Therapy on Inflammatory Mediators in Patients with Non-specific Low Back Pain: A Non-randomized Controlled Clinical Trial
SOURCE: Chiropractic & Manual Therapies 2021 (Jan 8)
Julita A. Teodorczyk-Injeyan, John J. Triano, Robert Gringmuth, Christopher DeGraauw, Adrian Chow & H. Stephen
Graduate Education and Research Programs,
Canadian Memorial Chiropractic College,
Toronto, Ontario, Canada
Background: The inflammatory profiles of patients with acute and chronic nonspecific low back pain (LBP) patients are distinct. Spinal manipulative therapy (SMT) has been shown to modulate the production of nociceptive chemokines differently in these patient cohorts. The present study further investigates the effect(s) of SMT on other inflammatory mediators in the same LBP patient cohorts.
Methods: Acute (n = 22) and chronic (n = 25) LBP patients with minimum pain scores of 3 on a 10-point numeric scale, and asymptomatic controls (n = 24) were recruited according to stringent exclusion criteria. Blood samples were obtained at baseline and after 2 weeks during which patients received 6 SMTs in the lumbar or lumbosacral region. The in vitro production of tumor necrosis factor (TNFα), interleukin-1 β (IL-1β), IL-6, IL-2, interferon γ (IFNγ), IL-1 receptor antagonist (IL-1RA), TNF soluble receptor type 2 (sTNFR2) and IL-10 was determined by specific immunoassays. Parametric as well as non-parametric statistics (PAST 3.18 beta software) was used to determine significance of differences between and within study groups prior and post-SMT. Effect size (ES) estimates were obtained using Cohen’s d.
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