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大肠杆菌是肠正常菌群的重要成分,它们能够在人体内合成有益的维生素B、维生素K及大肠菌素,发挥营养机体,拮抗致病菌的作用。直到本世纪 4O年代,Bray首次从腹泻儿童粪便中分离到能使实验室动物发病的大肠杆菌,人们才逐渐认识到:大肠杆菌中存在着一些携带某些致病因子,能引起人或动物消化道疾病的菌株,统称为致泻性大肠杆菌。 随着对腹泻研究的深入,腹泻相关病原菌已是一个相当广泛的概念,其中大肠杆菌是重要的腹泻病原体。目前,在世界上得到公认的致泻性大肠杆菌已有五种,即致病性大肠杆菌(Enteropathogenic Escherichia Coli EPEC)、产肠毒素大肠杆菌(EnterOtoxingenic Coli ETEC)、侵袭性大肠杆菌 Invasive E Coli(ETEC)、肠出血性大肠杆菌(EHEC)和肠集聚性大肠杆菌(EAggEC)。为了解膝州市致泻性大肠杆菌存在状况、血清型分
Escherichia coli is an important component of normal intestinal flora. They can synthesize beneficial vitamin B, vitamin K and colicin in the human body to play a nutritional body and antagonize the pathogenic bacteria. Until the 40’s of this century, Bray first isolated from diarrhea in children faeces can make laboratory animals E. coli, people gradually realized that: there are some in E. coli carrying certain virulence factors that can cause digestion in humans or animals Road disease, collectively referred to as diarrhea Escherichia coli. With the deepening of the research on diarrhea, diarrhea related pathogens have been a rather broad concept, of which Escherichia coli is an important diarrhea pathogen. At present, there are five known diarrheal Escherichia coli strains worldwide, namely Enteropathogenic Escherichia Coli EPEC, Enterotoxigenic Coli ETEC, Invasive E Coli ETEC), enterohemorrhagic Escherichia coli (EHEC) and enterococcal E. coli (EAggEC). In order to understand the presence of pathogenic E. coli in Kyushu, serogroups