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  • Title: [Gimenez staining: a rapid method for initial identification of legionella pneumophila in Amoeba trophozoite].
    Author: Shen J, Jiang QW, Li QX, Chen HY, Li ZH.
    Journal: Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi; 2005 Aug 30; 23(4):240-2. PubMed ID: 16296619.
    Abstract:
    OBJECTIVE: To establish a rapid staining method for facilitating initial identification of Legionella pneumophila in amoebal trophozoite. METHODS: Acanthamoeba polyphaga and Legionella pneumophila were co-cultured under laboratory condition. At consecutive time points during the culture, smears of the cultured products were made on glass slides for staining purposes. Different types of stainings including Gram's staining, Gimenez staining, Giemsa staining and immunofluorescence were used to determine the best method for the identification of amoebal pathogens. RESULTS: Gimenez staining technique is simpler and yields better results as compared with the other three stainings. Gimenez stain gives the best color and contrast for amoeba and amoebal Legionella Amoeba trophozoites and/or cysts showed a distinct purplish blue with amoebal Legionella in red. Amoebal Legionella can be distinguished clearly at an earlier time of co cul ture, providing a proper sensitivity. It takes only 10 minutes to finish the operation. The other techniques require the use of expensive reagents, are relatively time-consuming, and involve complex staining procedures. CONCLUSION: Gimenez staining is of value for the initial identification of amoebal pathogens, and it is suitable for laboratory diagnosis.
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