EDVARDSIYELLA

From Big Medical Encyclopedia

EDVARDSIYoLLA (Edwardsiella) — a genus of bacteria this. Enterobacteriaceae. The sort includes three types of E. tarda, E. hoshinae, E. ictaluri. The name Edwardsiella is given by name the American microbiologist P. R. Edwards.

Representatives E. pathogens for the person and animals. These are rhabdoid bacteria, gram-negative, mobile with a peritrikhi-alny arrangement of flagellums; the dispute and capsules is not formed. AA. have cultural signs, the general for this. Enterobacteriaceae. Are biochemical characterized by a limited set of the fermented carbohydrates and alcohols (glucose, a maltose, changeably pectine sugar and glycerin). Do not produce | 3-galakto-zidazu, but fermentation of lactose is positive at increase in its concentration up to 5%. Are active concerning nitrogen-containing connections: form an indole and hydrogen sulfide, decarboxylize a lysine and ornithine, recover nitrates in nitrites, do not produce proteinase, caseinazu, an uretaza. Reaction with methyl red is positive, reaction to methyl-acetyl carbinol is negative. Rezistentna to colistin and low concentrations of polymyxin, and also to streptocides are sensitive to the majority of antibiotics, but. At identification E. and with others you will present to their differentiation this one million. Enterobacteriaceae the most distinguishing characters are lack of growth on environments of limited mineral composition with sodium citrate and other sources of hydrocarbon food and energy, lack of fermentation of a mannitol and products of urease, formation of hydrogen sulfide and an indole. The accessory signs characteristic for E.: products


544 EDELMAN


a lysine - and ornithine decarboxylase, mobility, a positive oksidation — fermentation according to Hugh — to Lifson (hydrolysis of carbohydrates in aerobic and anaerobic conditions), lack of cytochrome oxydase. Use of these properties gave the chance to develop environments of purpose: the Wednesday to a nakopla

a niya containing a beef-extract broth, glucose, polymyxin and rosolic to - that; the dense selection and differential environment, on a cut it is possible to reveal growth E. on lack of fermentation of a mannitol, on products a lysine decarboxylase and to formation of hydrogen sulfide; the complex environment for identification, in a cut E. a lysine decarboxylase, fermentations of glucose decide on formation of gas, to lack of fermentation of a mannitol and xylose and lack of urease of hydrogen sulfide by training and an indole, products.

AA. are causative agents of diseases at many species of hematothermal animals. At people these diseases proceed with symptoms of defeat went. - kish. a path, damages of skin are more rare, development of sepsis is possible. The carriage edvardsiyell is noted.

Bibliography: G.'s guelder-rose of the Item Edwardsi-ella tarda, Zhurn. mikr., epid. and immun., No. 5, page 25, 1980; G. P. Guelder-rose,

Moyseenko of H. N and Kabano-fi and T. P. Reptiles — the main tank edvardsiyell in the nature, in the same place, No. 7, page 93, 1981; Bergey’s manual of systemic bacteriology, ed. by J. G. Holt, v. 1, p. 486, Baltimore — L., 1984; EdwardsP. R


. Ewing W. H. Identification of enterobacteriaceae, Minneapolis, 1972.

G. P. Kalina.

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