Virulence, Antibiotic Resistance, and Phylogenetic Relationships of Aeromonas spp. Carried by Migratory Birds in China

文献类型： 外文期刊

第一作者： Liang, Bing

作者： Liang, Bing;Ji, Xue;Jiang, Bowen;Zhu, Lingwei;Wang, Tiecheng;Li, Yuanguo;Liu, Jun;Guo, Xuejun;Sun, Yang;Liang, Bing;Ji, Xue;Jiang, Bowen;Zhu, Lingwei;Wang, Tiecheng;Li, Yuanguo;Liu, Jun;Guo, Xuejun;Sun, Yang;Yuan, Tingyu;Sun, Yang;Gerile, Chao Lu Men

作者机构：

关键词： Aeromonas spp; migratory bird; antibiotic resistance; virulence genes; biofilm; phylogenetic tree

期刊名称：MICROORGANISMS （ 影响因子：4.5； 五年影响因子：4.8 ）

ISSN：

年卷期： 2023 年 11 卷 1 期

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收录情况： SCI

摘要： This study aimed to evaluate antimicrobial resistance, virulence, and the genetic diversity of Aeromonas isolated from migratory birds from Guangxi Province, Guangdong Province, Ningxia Hui Autonomous Region, Jiangxi Province, and Inner Mongolia in China. A total of 810 samples were collected, including fresh feces, cloacal swabs, and throat swabs. The collected samples were processed and subjected to bacteriological examination. The resistance to 21 antibiotics was evaluated. A phylogenetic tree was constructed using concatenated gltA-groL-gyrB-metG-PPSA-recA sequences. Eight putative virulence factors were identified by PCR and sequencing, and a biofilm formation assay was performed using a modified microtiter plate method. In total, 176 Aeromonas isolates were isolated including A. sobria, A. hydrophila, A. veronii, and A. caviae. All isolates showed variable resistance against all 16 tested antibiotic discs, and only one antibiotic had no reference standard. Six kinds of virulence gene markers were discovered, and the detection rates were 46.0% (hlyA), 76.1% (aerA), 52.3% (alt), 4.5% (ast), 54.0% (fla), and 64.2% (lip). These strains were able to form biofilms with distinct magnitudes; 102 were weakly adherent, 14 were moderately adherent, 60 were non-adherent, and none were strongly adherent. Our results suggest that migratory birds carry highly virulent and multidrug-resistant Aeromonas and spread them around the world through migration, which is a potential threat to public health.

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