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Neurotoxicity of bupivacaine and liposome bupivacaine after sciatic nerve block in healthy and streptozotocin-induced diabetic mice [Elektronski vir]Markova, Liljana ...Background: Long-acting local anaesthetics (e.g. bupivacaine hydrochloride) or sustained-release formulations of bupivacaine (e.g. liposomal bupivacaine) may be neurotoxic when applied in the setting ... of diabetic neuropathy. The aim of the study was to assess neurotoxicity of bupivacaine and liposome bupivacaine in streptozotocin (STZ) - induced diabetic mice after sciatic nerve block. We used the reduction in fibre density and decreased myelination assessed by G-ratio (defined as axon diameter divided by large fibre diameter) as indicators of local anaesthetic neurotoxicity. Results: Diabetic mice had higher plasma levels of glucose (P < 0.001) and significant differences in the tail flick and plantar test thermal latencies compared to healthy controls (P < 0.001). In both diabetic and nondiabetic mice, sciatic nerve block with 0.25% bupivacaine HCl resulted in a significantly greater G-ratio and an axon diameter compared to nerves treated with 1.3% liposome bupivacaine or saline (0.9% sodium chloride) (P < 0.01). Moreover, sciatic nerve block with 0.25% bupivacaine HCl resulted in lower fibre density and higher large fibre and axon diameters compared to the control (untreated) sciatic nerves in both STZ-induced diabetic (P < 0.05) and nondiabetic mice (P < 0.01). No evidence of acute or chronic inflammation was observed in any of the treatment groups. Conclusions: In our exploratory study the sciatic nerve block with bupivacaine HCl (7 mg/kg), but not liposome bupivacaine (35 mg/kg) or saline, resulted in histomorphometric indices of neurotoxicity. Histologic findings were similar in diabetic and healthy control mice.Source: BMC veterinary research [Elektronski vir]. - ISSN 1746-6148 (art. no. 247, Vol. 16, 2020, str. 1-8 str.)Type of material - e-article ; adult, seriousPublish date - 2020Language - englishCOBISS.SI-ID - 23004675
Author
Markova, Liljana |
Umek, Nejc |
Horvat, Simon |
Hadžić, Admir |
Kuroda, Maxine M. |
Stopar Pintarič, Tatjana |
Mrak, Vesna |
Cvetko, Erika
Topics
bupivakain hidroklorid |
diabetes |
nevrotoksičnost |
injicirana suspenzija liposomskega bupivakina |
periferalna nevropatija |
bupivacaine hydrochloride |
diabetes |
neurotoxicity |
liposome bupivacaine injectable suspension |
peripheral neuropathy
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Markova, Liljana | 36689 |
Umek, Nejc | 51820 |
Horvat, Simon | 10412 |
Hadžić, Admir | |
Kuroda, Maxine M. | |
Stopar Pintarič, Tatjana | 15831 |
Mrak, Vesna | 33997 |
Cvetko, Erika | 10644 |
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