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In vivo research of paraspinal muscle weak point utilizing botulinum toxin in a single primate mannequin.
Clin Biomech (Bristol, Avon). 2018 Jan 29;53:1-6
Authors: Han SK, Lee Y, Hong JJ, Yeo HG, Website positioning J, Jeon CY, Jeong KJ, Jin YB, Kang P, Lee S, Shin CS, Kim YE, Chun KJ, Chang KT, Lee SR
Summary
BACKGROUND: It has been usually speculated that paraspinal muscle weak point is expounded to the spinal degeneration together with intervertebral disc failure. The aim of this research was to analyze the results of paraspinal muscle weak point induced by the botulinum toxin type-A on the lumbar backbone and habits sample in an in-vivo primate mannequin which has an upright locomotion much like that of people.
METHODS: Botox injections into paraspinal muscle of 1 cynomolgus monkey had been carried out biweekly as much as 19?weeks at L2-L3, L3-L4 and L4-L5. MRIs had been carried out for measurement of muscle cross-sectional areas and behavioral information had been collected utilizing a high-resolution transportable digital video digicam.
FINDINGS: The cross-sectional areas of the paraspinal muscle mass at L2-L3, L3-L4 and L4-L5 decreased by eight%, 12% and eight% at 21?weeks after the Botox injection, respectively. Intervertebral disc thickness at L2-L3, L3-L4 and L4-L5 decreased by 6%, eight% and 5% at 21?weeks after preliminary Botox injection, respectively. After the Botox injections, locomotion and motion exercise of the monkey was decreased. The length of sitting elevated from 21% to a most of 97% at 9?weeks after the Botox injection, whereas stance time decreased from 9% to a minimal of 1% at 11?weeks submit Botox injection.
INTERPRETATION: The findings of this research revealed that paraspinal muscle atrophy impacts intervertebral disc morphology and locomotion exercise of a primate and should result in an onset of intervertebral disc degeneration.
PMID: 29407350 [PubMed – as supplied by publisher]