TY - JOUR
T1 - Evaluation of the neurological safety of epidural milnacipran in rats
AU - Lim, Seung Mo
AU - Shin, Mee Ran
AU - Kang, Kyung Ho
AU - Kang, Hyun
AU - Nahm, Francis Sahngun
AU - Kim, Baek Hui
AU - Shin, Hwa Yong
AU - Lim, Young Jin
AU - Lee, Sang Chul
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2012/10
Y1 - 2012/10
N2 - Background: Milnacipran is a balanced serotonin norepinephrine reuptake inhibitor with minimal side effects and broad safety margin. It acts primarily on the descending inhibitory pain pathway in brain and spinal cord. In many animal studies, intrathecal administration of milnacipran is effective in neuropathic pain management. However, there is no study for the neurological safety of milnacipran when it is administered neuraxially. This study examined the neurotoxicity of epidural milnacipran by observing behavioral and sensory-motor changes with histopathological examinations of spinal cords in rats. Methods:Sixty rats were divided into 3 groups, with each group receiving epidural administration of either 0.3 ml (3 mg) of milnacipran (group M, n = 20), 0.3 ml of 40% alcohol (group A,n = 20), or 0.3 ml of normal saline (group S, n = 20). Results: There were no abnormal changes in the behavioral, sensory-motor, or histopathological findings in all rats of groups M and S over a 3-week observation period, whereas all rats in group A had abnormal changes. Conclusions: Based on these findings, the direct epidural administration of milnacipran in rats did not present any evidence of neurotoxicity in behavioral, sensory-motor and histopathological evaluations.
AB - Background: Milnacipran is a balanced serotonin norepinephrine reuptake inhibitor with minimal side effects and broad safety margin. It acts primarily on the descending inhibitory pain pathway in brain and spinal cord. In many animal studies, intrathecal administration of milnacipran is effective in neuropathic pain management. However, there is no study for the neurological safety of milnacipran when it is administered neuraxially. This study examined the neurotoxicity of epidural milnacipran by observing behavioral and sensory-motor changes with histopathological examinations of spinal cords in rats. Methods:Sixty rats were divided into 3 groups, with each group receiving epidural administration of either 0.3 ml (3 mg) of milnacipran (group M, n = 20), 0.3 ml of 40% alcohol (group A,n = 20), or 0.3 ml of normal saline (group S, n = 20). Results: There were no abnormal changes in the behavioral, sensory-motor, or histopathological findings in all rats of groups M and S over a 3-week observation period, whereas all rats in group A had abnormal changes. Conclusions: Based on these findings, the direct epidural administration of milnacipran in rats did not present any evidence of neurotoxicity in behavioral, sensory-motor and histopathological evaluations.
KW - Epidural injection
KW - Milnacipran
KW - Neurotoxicity
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U2 - 10.3344/kjp.2012.25.4.228
DO - 10.3344/kjp.2012.25.4.228
M3 - Article
C2 - 23091683
AN - SCOPUS:84873529393
VL - 25
SP - 228
EP - 237
JO - Korean Journal of Pain
JF - Korean Journal of Pain
SN - 2005-9159
IS - 4
ER -