Routman E, Miller R D, Phillips-Conroy J, Hartl D L
Appl Environ Microbiol. 1985 Oct;50(4):749-54. doi: 10.1128/aem.50.4.749-754.1985.
Two collections of Escherichia coli from human hosts and one from free-ranging African yellow baboons were examined for the ability to utilize various sugars (biotype) and for resistance to antibiotics. The frequency of antibiotic resistance in the E. coli flora of baboons that feed regularly in village garbage dumps was found to be no greater than that in baboons not associated with human habitation. The frequency of antibiotic resistance in E. coli isolated from baboons is similar to that in E. coli isolated from humans before the widespread use of antibiotics but significantly lower than that in recent isolates from humans. The biotype data indicate that the amount and distribution of genetic variation in the E. coli among free-ranging baboon troops are similar to those in isolates from humans. However, E. coli isolates from baboons are able to utilize a greater variety of sugars as their sole carbon source, possibly because of a greater variety of sugars in the baboon diet.
对两株来自人类宿主的大肠杆菌菌株以及一株来自自由放养的非洲黄狒狒的大肠杆菌菌株进行了检测,以考察它们利用各种糖类的能力(生物型)以及对抗生素的耐药性。结果发现,经常在村庄垃圾场觅食的狒狒肠道大肠杆菌菌群中的抗生素耐药频率并不高于未与人类居住地相关联的狒狒。从狒狒中分离出的大肠杆菌的抗生素耐药频率与抗生素广泛使用之前从人类中分离出的大肠杆菌相似,但显著低于近期从人类中分离出的菌株。生物型数据表明,自由放养的狒狒群体中大肠杆菌的遗传变异数量和分布与从人类中分离出的菌株相似。然而,从狒狒中分离出的大肠杆菌菌株能够利用更多种类的糖类作为其唯一碳源,这可能是因为狒狒的饮食中糖类种类更多。