Andreoni S, Molinari G L
Laboratorio di Microbiologia, Ospedale Maggiore di Novara.
G Batteriol Virol Immunol. 1991 Jan-Dec;84(1-12):53-60.
Different strains of E. coli, that were isolated during years 1986-1990 from 217 urine samples in patients with asymptomatic bacteriuria, cystitis, cysto-pyelitis and pyelonephritis, appeared to be more frequently haemolytic (34.5%) than strains of E. coli isolated from faecal samples in patients with acute enteropathy. It was confirmed that the haemolysin production occurs during log -phase of bacterial growth. The degree of haemolysis can vary widely according to the strain involved. Agglutination tests, using 53 O-antiserum, showed a great variety of serogroups. Some of them (04, 018, 022) are prevalent among the haemolytic strains isolated from urine; some others (055, 0111, 075) are prevalent among the anhaemolytic strains isolated from urine and faeces.
1986年至1990年期间，从217例无症状菌尿症、膀胱炎、膀胱肾盂炎和肾盂肾炎患者的尿液样本中分离出的不同大肠杆菌菌株，似乎比从急性肠病患者粪便样本中分离出的大肠杆菌菌株更易溶血（34.5%）。已证实溶血素的产生发生在细菌生长的对数期。溶血程度会因所涉及的菌株而有很大差异。使用53种O抗血清进行的凝集试验显示出多种血清群。其中一些（O4、O18、O22）在从尿液中分离出的溶血菌株中占主导；其他一些（O55、O111、O75）在从尿液和粪便中分离出的非溶血菌株中占主导。
