Evaluation of the neurological safety of epidurally-administered pregabalin in rats
BACKGROUND: The primary site of action of pregabalin, i.e. the α-2-δ subunit of the voltage-dependent calcium channel, is located at the dorsal root ganglion and dorsal horn of the spinal cord. Therefore, the epidural administration of pregabalin could have advantages over oral administration. However, the possibility of its neurotoxicity should be excluded before any attempt at epidural administration. We evaluated the neuronal safety of epidurally-administered pregabalin by observing the sensory/motor changes and examining the histopathology of spinal cord in rats.
METHODS: Sixty rats of 180-230 g were divided into three groups; 3 mg of pregabalin dissolved in 0.3 ml saline (group P, n = 20), 0.3 ml 40% alcohol (group A, n = 20), or 0.3 ml normal saline (group N, n = 20) was administered epidurally to the rats in each group. Pinch-toe test, motor function evaluation, and histopathologic examination of vacuolation, chromatolysis, meningeal inflammation, and neuritis were performed at the 1st, 3rd, 7th, and 21st day after each epidural administration.
RESULTS: All rats enrolled in group P, like those in group N, showed neither sensory/motor dysfunction nor any histopathological abnormality over the 3-week observation period. In contrast, in group A, 80% of the rats showed abnormal response to the pinch-toe test and all rats showed decreased motor function during the entire evaluation period. In addition, all histopathologic findings of neurotoxicity were observed exclusively in group A.
CONCLUSIONS: The epidurally administered pregabalin (about 15 mg/kg) did not cause any neurotoxic evidence, in terms of both sensory/motor function evaluation and histopathological examination in rats.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2012 |
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| Erschienen: |
2012 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:62 |
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| Enthalten in: |
Korean journal of anesthesiology - 62(2012), 1 vom: 01. Jan., Seite 57-65 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Lee, Jeong Rim [VerfasserIn] |
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| Anmerkungen: |
Date Completed 02.10.2012 Date Revised 21.10.2021 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.4097/kjae.2012.62.1.57 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM215316533 |
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| 500 | |a Date Revised 21.10.2021 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a BACKGROUND: The primary site of action of pregabalin, i.e. the α-2-δ subunit of the voltage-dependent calcium channel, is located at the dorsal root ganglion and dorsal horn of the spinal cord. Therefore, the epidural administration of pregabalin could have advantages over oral administration. However, the possibility of its neurotoxicity should be excluded before any attempt at epidural administration. We evaluated the neuronal safety of epidurally-administered pregabalin by observing the sensory/motor changes and examining the histopathology of spinal cord in rats | ||
| 520 | |a METHODS: Sixty rats of 180-230 g were divided into three groups; 3 mg of pregabalin dissolved in 0.3 ml saline (group P, n = 20), 0.3 ml 40% alcohol (group A, n = 20), or 0.3 ml normal saline (group N, n = 20) was administered epidurally to the rats in each group. Pinch-toe test, motor function evaluation, and histopathologic examination of vacuolation, chromatolysis, meningeal inflammation, and neuritis were performed at the 1st, 3rd, 7th, and 21st day after each epidural administration | ||
| 520 | |a RESULTS: All rats enrolled in group P, like those in group N, showed neither sensory/motor dysfunction nor any histopathological abnormality over the 3-week observation period. In contrast, in group A, 80% of the rats showed abnormal response to the pinch-toe test and all rats showed decreased motor function during the entire evaluation period. In addition, all histopathologic findings of neurotoxicity were observed exclusively in group A | ||
| 520 | |a CONCLUSIONS: The epidurally administered pregabalin (about 15 mg/kg) did not cause any neurotoxic evidence, in terms of both sensory/motor function evaluation and histopathological examination in rats | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Epidural injection | |
| 650 | 4 | |a Neurotoxicity | |
| 650 | 4 | |a Pregabalin | |
| 700 | 1 | |a Lee, Pyung-Bok |e verfasserin |4 aut | |
| 700 | 1 | |a Choe, Gheeyoung |e verfasserin |4 aut | |
| 700 | 1 | |a Lee, Sang Chul |e verfasserin |4 aut | |
| 700 | 1 | |a Lee, Hyo Min |e verfasserin |4 aut | |
| 700 | 1 | |a Kim, Eunjung |e verfasserin |4 aut | |
| 700 | 1 | |a Kim, Yong Chul |e verfasserin |4 aut | |
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