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KMID : 0357220040160020169
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Journal of Korean Society Physical Therapy
2004 Volume.16 No. 2 p.169 ~ p.180
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The Effect of TENS on Muscle Pain Induced by Carrageenan
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Abstract
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The aim of this study was to investigate the effect of TENS on muscle pain induced by carrageenan. Muscle pain was induced in male Sprague-Dowley rats by intra-muscular injection of gastrocnemius with $3\%$ carrageenan. nNOS was measured to assess the effect of TENS on muscle pain induced by Carrageenan. The lumbar enlargement of the spinal cord was removed in different groups of animals 24 h after induction of muscle pain. The level of nNOS mRNA was measured in the lumbar section of the spinal cord using RT-PCT. The expression of nNOS was analyzed in the dorsal horn of the lumbar spinal cord by immunohistochemistry. TENS decreased nNOS immunoreactivity in the dorsal horn of the lumbar spinal cord when compared with controls(p<.05). In RT-PCR, TENS decreased nNOS mRNA level of lumbar spinal cord when compared with controls(p<.05). These results suggested that application of TENS attributed to decrease muscle pain.
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