PMID- 30783935 OWN - NLM STAT- MEDLINE DCOM- 20190910 LR - 20200225 IS - 1573-4978 (Electronic) IS - 0301-4851 (Linking) VI - 46 IP - 2 DP - 2019 Apr TI - Colistin induced peripheral neurotoxicity involves mitochondrial dysfunction and oxidative stress in mice. PG - 1963-1972 LID - 10.1007/s11033-019-04646-5 [doi] AB - Polymyxin is a critical antibiotic against the infection caused by multidrug-resistant gram-negative bacteria. Neurotoxicity is one of main dose-limiting factors. The present study aimed to investigate the underlying molecular mechanism on colistin induced peripheral neurotoxicity using a mouse model. Forty mice were divided into control, colistin 1-, 3- and 7-day groups, the mice were intravenously injected with saline or colistin (sulfate) at the dose of 15 mg/kg/day for 1, 3 and 7 days, respectively. The results showed that, colistin treatment for 7 days markedly resulted in the demyelination, axonal degeneration and mitochondria swelling in the mice's sciatic tissues. Colistin treatment induces oxidative stress as well as the increases of mitochondrial permeability transition, decreases of membrane potential (DeltaPsi(m)) and activities of mitochondrial respiratory chain in the mice's sciatic nerve tissues. Furthermore, in the colistin-7 day group, adenosine-triphosphate (ATP) level Na(+)/K(+)-ATPase activity decreased to 75.2% (p < 0.01) and 80.1% (p < 0.01), respectively. Meanwhile, colistin treatment down-regulates the expression of protein kinase B (Akt) and mammalian target of rapamycin (mTOR) mRNAs and up-regulates the expression of Bax and caspase-3 mRNAs. Our results reveal that colistin induced sciatic nerves damage involves oxidative stress, mitochondrial dysfunction and the inhibition of Akt/mTOR pathway. FAU - Dai, Chongshan AU - Dai C AD - College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China. AD - College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China. FAU - Tang, Shusheng AU - Tang S AD - College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China. FAU - Biao, Xiang AU - Biao X AD - College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China. FAU - Xiao, Xilong AU - Xiao X AD - College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China. FAU - Chen, Chunli AU - Chen C AD - College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China. chunli.chen@neau.edu.cn. FAU - Li, Jichang AU - Li J AD - College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China. lijichang@neau.edu.cn. LA - eng GR - 31472240/National Natural Science Foundation of China/ PT - Journal Article DEP - 20190219 PL - Netherlands TA - Mol Biol Rep JT - Molecular biology reports JID - 0403234 RN - 0 (Reactive Oxygen Species) RN - Z67X93HJG1 (Colistin) SB - IM MH - Animals MH - Apoptosis/drug effects MH - China MH - Colistin/*metabolism/*pharmacology/toxicity MH - Female MH - Mice MH - Mitochondria/metabolism MH - Oxidative Stress/drug effects/physiology MH - Peripheral Nervous System Diseases/chemically induced/*physiopathology MH - Reactive Oxygen Species/metabolism MH - Sciatic Neuropathy/chemically induced/physiopathology OTO - NOTNLM OT - Akt/mTOR pathway OT - Colistin OT - Mitochondrial dysfunction OT - Oxidative stress OT - Peripheral neurotoxicity EDAT- 2019/02/21 06:00 MHDA- 2019/09/11 06:00 CRDT- 2019/02/21 06:00 PHST- 2018/11/30 00:00 [received] PHST- 2019/01/24 00:00 [accepted] PHST- 2019/02/21 06:00 [pubmed] PHST- 2019/09/11 06:00 [medline] PHST- 2019/02/21 06:00 [entrez] AID - 10.1007/s11033-019-04646-5 [pii] AID - 10.1007/s11033-019-04646-5 [doi] PST - ppublish SO - Mol Biol Rep. 2019 Apr;46(2):1963-1972. doi: 10.1007/s11033-019-04646-5. Epub 2019 Feb 19.