Ecologie des Systèmes Aquatiques, Université Libre de Bruxelles, Brussels, Belgium.
Water Res. 2011 Jan;45(2):788-96. doi: 10.1016/j.watres.2010.09.003. Epub 2010 Sep 15.
Sewage-contaminated rivers are ecosystems deeply disturbed by human activity due to the release of heavy metals, organic pollutants and pharmaceuticals as well as faecal and pathogenic micro-organisms, which coexist with the autochthonous microbial population. In this study, we compared the percentage of resistance in faecal and heterotrophic bacteria in rivers with different degrees of sewage pollution. As a matter of fact, no correlation was found neither between the degree of sewage pollution and the percentage of antimicrobial resistant heterotrophic bacteria nor between the number of resistant faecal bacteria and that of resistant heterotrophic bacteria. Most of the resistant isolates from the Zenne river downstream Brussels were multi-resistant and the resistance patterns were similar among the strains of each phylogenetic group. The total microbial community in this polluted river (as evaluated through a 16S rRNA gene clone library analysis) appeared to be dominated by the phyla Proteobacteria and Bacteroidetes while the phylum TM7 was the third most represented.
受污水污染的河流是受人类活动严重干扰的生态系统，因为重金属、有机污染物和药品以及粪便和致病微生物被释放到其中，这些物质与本土微生物群落共存。在这项研究中，我们比较了不同程度污水污染的河流中粪便和异养细菌的耐药率。事实上，污水污染程度与抗微生物药物的异养细菌的耐药率之间，以及粪便耐药菌的数量与异养耐药菌的数量之间都没有相关性。来自布鲁塞尔下游的泽恩河的大多数耐药分离株都是多耐药的，并且每个系统发育组的菌株之间的耐药模式相似。在这条受污染的河流中（通过 16S rRNA 基因克隆文库分析评估），总微生物群落似乎主要由变形菌门和拟杆菌门主导，而 TM7 门则是第三大代表。
