Objective: The aim of this study is to investigate the changes of temporomandibular
joint (TMJ) by experimentally induced osteoarthritis (OA) and
the effectiveness of botulinum toxin A (BTX-A) treatment via histopathological
and biochemical methods.
Methods: Sprague-Dawley rats, aged 8 to 10 weeks, were used in this
study. Intra-articular monosodium iodoacetate (MIA) solution was injected
bilaterally into two experimental groups to induce TMJ osteoarthritis.
Sterile 0.9% NaCl solution was injected to TMJ of healthy control group bilaterally
to investigate the effect of trauma by intra-articular injection. Development
of experimental osteoarthritis took 4 weeks, and blood samples
were harvested from MIA group and examined to prove the presence of
induced osteoarthritis. OA-induced eight rats with BTX-A. Another OA-induced
eight rats were classified as a control group and intra-articular 0.9%
NaCl solution was injected bilaterally. All samples were sacrificed 6 weeks
after treatment. Blood samples and specimen of TMJ were harvested from
all rats and examined histopathologically and biochemically.
Results: BTX-A and 0.9% NaCl solution groups showed some improvement
compared with untreated MIA group but it was not statistically significant.
There was no sign of trauma in 0.9% NaCl solution-injected healthy group.
Pathological findings were also consistent with the biochemical results.
Conclusion: BTX-A was not successful at treatment of OA and is not a proper
selection especially when used intra-articularly.
Primary Language | English |
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Journal Section | Articles |
Authors | |
Publication Date | March 15, 2018 |
Submission Date | April 7, 2017 |
Published in Issue | Year 2018 Volume: 8 Issue: 1 |