Borges Clarissa A, Maluta Renato P, Beraldo Lívia G, Cardozo Marita V, Guastalli Elisabete A L, Kariyawasam Subhashinie, DebRoy Chitrita, Ávila Fernando A
Department of Veterinary Pathology, São Paulo State University (UNESP), Jaboticabal, São Paulo, Brazil.
Department of Genetics, Evolution and Bioagents, Institute of Biology, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil.
Vet J. 2017 Jan;219:65-67. doi: 10.1016/j.tvjl.2016.12.015. Epub 2016 Dec 27.
Thirty Escherichia coli isolates from captive and free-living pigeons in Brazil were characterised. Virulence-associated genes identified in pigeons included those which occur relatively frequently in avian pathogenic E. coli (APEC) from commercial poultry worldwide. Eleven of 30 E. coli isolates from pigeons, belonging mainly to B1 and B2 phylogenetic groups, had high or intermediate pathogenicity for 1-day-old chicks. The frequency of multi-drug resistant (MDR) E. coli in captive pigeons was relatively high and included one isolate positive for the extended-spectrum β-lactamase (ESBL) gene bla. Pulsed field gel electrophoresis (PFGE) showed high heterogeneity among isolates. There is potential for pigeons to transmit antibiotic resistant pathogenic E. coli to other species through environmental contamination or direct contact.
对从巴西圈养和自由生活的鸽子中分离出的30株大肠杆菌进行了特征分析。在鸽子中鉴定出的与毒力相关的基因包括那些在全球商业家禽的禽致病性大肠杆菌（APEC）中相对频繁出现的基因。从鸽子中分离出的30株大肠杆菌中，有11株主要属于B1和B2系统发育群，对1日龄雏鸡具有高致病性或中度致病性。圈养鸽子中多重耐药（MDR）大肠杆菌的频率相对较高，其中包括一株超广谱β-内酰胺酶（ESBL）基因bla呈阳性的分离株。脉冲场凝胶电泳（PFGE）显示分离株之间具有高度异质性。鸽子有可能通过环境污染或直接接触将抗生素耐药性致病性大肠杆菌传播给其他物种。
