The immediate effects of cervical spine manipulation on pain and biochemical markers in females with acute non-specific mechanical neck pain: a randomized clinical trial

E B Lohman, G R Pacheco, L Gharibvand, N Daher, K Devore, G Bains, M AlAmeri, L S Berk, E B Lohman, G R Pacheco, L Gharibvand, N Daher, K Devore, G Bains, M AlAmeri, L S Berk

Abstract

Study Design: Randomized clinical trial with pre-test, post-test control group design. Objectives: To examine the immediate effects of cervical spinal manipulation (CSM) on serum concentration of biochemical markers (oxytocin, neurotensin, orexin A, and cortisol). Background: Several studies have found an association between spinal manipulation (SM) and pain perception. However, the mechanism by which SM modulates pain remains undefined. Methods: Twenty-eight female subjects with non-specific mechanical neck pain were randomly assigned to one of two interventions (CSM versus sham CSM). Blood samples were drawn before and immediately after the respective interventions. Oxytocin, neurotensin, orexin A, and cortisol were measured from the blood and serum using the Milliplex Map Magnetic Bead Panel Immunoassay on the Luminex 200 Platform. Results: In the CSM group, there were significant increases in pre- versus post-manipulation mean oxytocin (154.5 ± 60.1 vs. 185.1 ± 75.6, p = .012); neurotensin (116.0 ± 26.5 vs.136.4 ± 34.1, p < . 001); orexin A (52.2 ± 31.1 vs. 73.8 ± 38.8, p < .01) serum concentration; but no significant differences in mean cortisol (p = .052) serum concentration. In the sham group, there were no significant differences in any of the biomarkers (p > .05). Conclusion: The results of the current study suggest that the mechanical stimuli provided through a CSM may modify neuropeptide expression by immediately increasing the serum concentration of nociception-related biomarkers (oxytocin, neurotensin, orexin A, but not cortisol) in the blood of female subjects with non-specific mechanical neck pain.

Keywords: Spinal manipulation; cortisol; neck pain; neurotensin; orexin A; oxytocin.

Figures

Figure 1.
Figure 1.
Cervical spinal manipulation.
Figure 2.
Figure 2.
Flow chart of the methodological procedure.
Figure 3.
Figure 3.
Mean and 95% confidence interval error bar for oxytocin, neurotensin, orexin A, cortisol concentration in blood samples.

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Source: PubMed

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