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KMID : 0311119800210010052
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Yonsei Medical Journal
1980 Volume.21 No. 1 p.52 ~ p.57
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Cultural and Biochemical Characteristics of Clinical Isolates of Aeromonas hydrophila
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Chong, Yunsop
Yi, Kui Nyung/Lee, Samuel Y.
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Abstract
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Aeromonas hydrophila infection has been increasingly found, in particular among patients with various underlying diseases. Many characteristics of this organism are quite similar to those of Enterobacteriaceae and Vibrio, making an accurate identification difficult.
In a period of 2 years, the authors obtained a total of 27 isolates of A. hydrophila from clinical materials, and their cultural and biochemical characteristics are herewith reported. Some of the most important clues to suspect this organism were a wide zone of complete hemzolysis on blood agar, partially alkaline slant, acid butt, and small amount of gas in triple sugar iron agar(TSI), weak indole reaction, and negative ornithine decarboxylase in motility indole ornithine medium(MIO), and usually positive citrate utilization.
It is concluded that the identification of this organism should be possible on the basis of deoxyribonuclease(DNase), oxidase, and a few other tests. Our isolates showed a similar antibiotic susceptibility to those reported in other countries; i.e., all were resistant to ampicillin and most were susceptible to other antibiotics, excluding cephalothin.
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