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首页> 外文期刊>Journal of Clinical Microbiology >Enterobacter hormaechei, a new species of the family Enterobacteriaceae formerly known as enteric group 75.
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Enterobacter hormaechei, a new species of the family Enterobacteriaceae formerly known as enteric group 75.

机译：霍马氏肠杆菌（Enterobacter hormaechei），是肠杆菌科的一个新物种，以前称为肠溶菌群75。

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The name Enterobacter hormaechei is proposed for a new species of the family Enterobacteriaceae, formerly called Enteric Group 75, which consists of 23 strains, 22 of which were isolated from humans. DNAs from 12 E. hormaechei strains tested were highly related to the type strain (ATCC 49162) by DNA hybridization, using the hydroxyapatite method (80 to 97% in 60 degrees C reactions; 80 to 90% in 75 degrees C reactions). The strains were most closely related (50 to 63%) to Enterobacter cloacae, Enterobacter dissolvens, Enterobacter taylorae, and Enterobacter nimipressuralis. E. hormaechei strains were positive within 48 h for the following: Voges-Proskauer test; citrate utilization (Simmons and Christensen); urea hydrolysis (87%); ornithine decarboxylase; growth in potassium cyanide (KCN); malonate utilization; production of acid from D-glucose, L-arabinose, cellobiose, dulcitol (87%), D-galactose, maltose, D-mannitol, D-mannose, L-rhamnose, sucrose, trehalose, and D-xylose; acid production from mucate; nitrate reduction; and o-nitrophenyl-beta-D-galactopyranoside. Delayed positive reactions were seen in tests for arginine dihydrolase, gas from D-glucose, acid from alpha-methyl-D-glucoside, and acetate utilization. E. hormaechei was negative in tests for indole production; H2S production; phenylalanine deaminase; lysine decarboxylase; gelatin hydrolysis; acid production from D-adonitol, D-arabitol, erythritol, glycerol, i(myo)-inositol, melibiose, raffinose, and D-sorbitol; esculin hydrolysis; DNase; lipase; and tyrosine clearing. Variable reactions occurred in tests for methyl red, motility, and tartrate. All strains tested were susceptible or moderately susceptible to amikacin, azlocillin, cefotaxime, ceftazidime, ceftriaxone, chloramphenicol, gentamicin, mezlocillin, moxalactam, piperacillin, trimethoprim-sulfamethoxazole, sulfisoxazole, thienamycin, tobramycin, and trimethoprim. All strains tested were resistant to nitrofurantoin; the majority were resistant to ampicillin, cefoxitin, and cephalothin. Four isolates were from blood; most other isolates were from wounds or sputum.
机译：霍马肠肠杆菌的名称是针对肠杆菌科的一个新物种提出的，前称肠杆菌科75，它由23株菌株组成，其中22株是从人类中分离出来的。通过使用羟基磷灰石方法（60摄氏度反应中80％至97％; 75摄氏度反应中80％至90％）进行DNA杂交，来自12个受试大肠杆菌的菌株与类型菌株（ATCC 49162）高度相关。菌株与阴沟肠杆菌，肠溶杆菌，泰勒肠杆菌和尼古拉肠杆菌最密切相关（50％至63％）。下列条件下，霍马希氏大肠杆菌菌株在48小时内呈阳性反应：Voges-Proskauer检验;柠檬酸盐利用（Simmons和Christensen）;尿素水解（87％）;鸟氨酸脱羧酶氰化钾（KCN）的增长;丙二酸利用率由D-葡萄糖，L-阿拉伯糖，纤维二糖，二糖醇（87％），D-半乳糖，麦芽糖，D-甘露醇，D-甘露糖，L-鼠李糖，蔗糖，海藻糖和D-木糖生产酸;乳酸盐产生酸;硝酸盐还原和邻硝基苯基-β-D-吡喃半乳糖苷。在精氨酸二水解酶，D-葡萄糖产生的气体，α-甲基-D-葡萄糖苷产生的酸和乙酸盐利用度的测试中发现延迟的阳性反应。 E. hormaechei的吲哚生产测试为阴性; H2S生产;苯丙氨酸脱氨酶;赖氨酸脱羧酶;明胶水解;由D-腺苷醇，D-阿拉伯糖醇，赤藓糖醇，甘油，异丙基肌醇，蜜三糖，棉子糖和D-山梨糖醇产生酸;七叶皂苷水解;脱氧核糖核酸酶;脂肪酶和酪氨酸清除。甲基红，活力和酒石酸的测试中发生了各种反应。测试的所有菌株均对阿米卡星，阿洛西林，头孢噻肟，头孢他啶，头孢曲松，氯霉素，庆大霉素，美洛西林，莫拉西坦，哌拉西林，甲氧苄氨嘧啶-磺胺甲恶唑，磺胺异恶唑，噻菌胺和甲氧苄啶，妥布霉素，妥布霉素，特霉霉素，妥布霉素。所有测试的菌株均对呋喃妥因具有抗药性。大多数对氨苄西林，头孢西丁和头孢菌素有抗药性。四个分离物来自血液。其他大多数分离株来自伤口或痰液。

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