耐药白色念珠菌弥散性感染小鼠模型的建立
基金项目:

广东省科技计划项目


The establishment of the drug-resistant Candida albicans disseminated infected mice model
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Fund Project:

Science and technology project of Guangdong Province

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    摘要:

    [摘要]目的 建立耐药白色念珠菌弥散性感染小鼠模型,为耐药菌药物筛选提供重要工具。方法 免疫抑制ICR小鼠,尾静脉注射临床耐氟康唑白色念珠菌CaR,对感染小鼠进行临床症状、生存情况、组织载菌量、组织病理、细胞因子以及药效评价,建立耐药念珠菌弥散性感染小鼠模型。结果CaR感染小鼠在接种后第1天出现死亡,感染 16天内动物的死亡率为90.7%,与敏感型菌株CaS组比较无显著性差异,但是早期动物的死亡比CaS组快。感染第4天,各实质组织都能检测到念珠菌,与CaS组比较肾、脑组织载菌量具有显著性差异。组织病理检测,肾、脑、心组织病理变化明显,主要表现为真菌性肉芽肿样。利用液相芯片技术对感染肾组织进行11个细胞因子检测,结果白色念珠菌感染肾组织中IL-1α,IL-6,IL-10,TNF-α,IFN-γ5个细胞因子出现明显变化,与CaS组比较,IL-1α和IFN-γ显著升高,TNF-α显著下降。CaR和CaS感染小鼠给予10mg/kg氟康唑,死亡率分别为37.5%、83.3%,具有显著性差异。结论 本研究通过免疫抑制小鼠接种耐药菌株CaR,成功建立了耐药白色念珠菌弥散性感染小鼠模型。

    Abstract:

    [Abstract] Objective To establish the drug-resistant Candida albicans disseminated infected mice model, and to provide an important tool for drug screening in the drug-resistant Candida albicans. Methods The clinical Drug-resistant Candida albicans CaR was injected via the lateral tail vein of immunosuppressive ICR mice to establish a mouse model of disseminated candidiasis resistant. The model was evaluated by the model evaluation index, such as the clinical features, survival condition, the amount of tissue fungal burden, tissue pathology, cytokines content and efficacy evaluation. Results Mice infected with drug-resistant Candida albicans CaR died at the first days after the inoculation, and mortality rate was 90.7% within 16 days. There was no significant difference between CaR group and the clinical drug sensitive strain CaS group, however, CaR group mice died faster than CaS group in the early stage; On the fourth day of infection, Candida albicans was detected in the tissues, and the difference was significant between groups CaR and CaS in kidney and brain;The pathological sections were observed, and the main manifestations were fungal granuloma in kidney, brain and heart;11 kinds of cytokines in renal tissue were detected by liquid phase chip technology;The changes of IL-1α,IL-6,IL-10,TNF-αand IFN-γin kidney were significant. Compared with CaS group, IL-1 and IFN-γ were significantly higher and TNF-αdecreased significantly in CaR group.The mice of groups CaR and CaS were treated with 10mg/kg fluconazole, the mortality rates were 37.5% and 83.3%, which have a significant difference. Conclusion Drug-resistant Candida albicans CaR were injected via the lateral tail vein of immunosuppressive ICR mice to establish the disseminated infected mice model successfully.

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李航,龚宝勇,罗银珠,吴玉娥,陈梅玲,陈锐,刘晓霖,王晖,黄韧,张钰.耐药白色念珠菌弥散性感染小鼠模型的建立[J].中国比较医学杂志,,().

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历史
  • 收稿日期:2015-10-26
  • 最后修改日期:2015-11-25
  • 录用日期:2016-01-04
  • 在线发布日期: 2016-11-28
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