類氧化微桿菌(Microbacterium paraoxydans)屬于微桿菌科(Microbacteriaceae),革蘭陽(yáng)性桿菌,需氧,產(chǎn)黃色素。 臨床相關(guān)性 環(huán)境微生物。偶見(jiàn)引起導(dǎo)管相關(guān)性感染,如心內(nèi)膜炎、菌血癥、腹透病人腹膜炎等。有文獻(xiàn)報(bào)道該菌可從臨床標(biāo)本如尿、傷口拭子、膝關(guān)節(jié)穿刺液、胸水、氣管分泌物等分離。 藥敏試驗(yàn) 肉湯稀釋法(裂解馬血陽(yáng)離子調(diào)節(jié)肉湯)檢測(cè)MIC,受試抗生素及其折點(diǎn)參考M45ED3 Table6;β-內(nèi)酰胺類抗生素結(jié)果須孵育48小時(shí)后觀察,其余抗生素如24小時(shí)培養(yǎng)后生長(zhǎng)孔生長(zhǎng)明顯則可以判讀結(jié)果。培養(yǎng)中遇到革蘭陽(yáng)性棒狀桿菌通常認(rèn)為是污染菌。對(duì)分離自無(wú)菌部位標(biāo)本(如深部組織,腦脊液,多套陽(yáng)性血培養(yǎng))植入假體裝置,來(lái)自免疫缺陷患者的菌株需要藥敏試驗(yàn)。 參考文獻(xiàn)1.Pinchman E, et al. Acinetobacter radioresistens and Microbacterium paraoxydans endocarditis in patient with indwelling catheter and metastatic carcinoma. BMJ Case Rep. 2025 Jun 15;16(6):e254877.2.Amano J, et al. Catheter-related bloodstream infection by Microbacterium paraoxydans in a pediatric patient with B-cell precursor acute lymphocytic leukemia: A case report and review of literature on Microbacterium bacteremia. J Infect Chemother. 2019 Oct;25(10):806-8103.Choi HS, et al. Peritoneal Dialysis-Related Peritonitis Caused by Microbacterium paraoxydans. Jpn J Infect Dis.2017 Mar 24;70(2):195-196.4.Gneiding K, et al. Identities of Microbacterium spp encountered in human clinical specimens. J Clin Microbiol.2008 Nov;46(11):3646-54.