期刊
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
卷 224, 期 -, 页码 -出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2021.112687
关键词
Antibiotic resistance genes; Microbial community; Poultry farm; Human health; One-Health; Nasopharynx
资金
- Joint Funds of the National Natural Science Foundation of China [U1804184]
- Key Scientific Research Projects of Colleges and Universities in Henan Province [18A330006]
The study revealed that antibiotics in the breeding industry can impact the environment and human health by accelerating the spread of antibiotic resistance genes through aerosols. The concentration of bacteria in aerosols inside chicken houses exceeded limits and affected the microbial community in workers' nasal cavities.
Antibiotics in breeding industry can enter the environment through multiple pathways, thus accelerating the emergence and spread of antibiotic resistance genes (ARGs), among which aerosol transmission is easily achieved and often overlooked. To elucidate the role of aerosols in this situation, the present study investigated the distribution characteristics of 107 ARG subtypes (targeting to eight different ARG types) and nine mobile genetic elements (MGEs) and bacterial community in animal (chicken cloaca), environment (aerosols) and human (nasopharynx) of a chicken farm (n = 42) in Henan Province. In total, 116 ARG subtypes and MGEs were identified in the poultry farm. The total bacterial concentration of aerosols inside the chicken house (3.117 x 104 CFU/m3) exceeded the corresponding limit. The microbial communities in the samples of cloaca swab (C) and the workers' nasopharyngeal swab (N) were closer, while the abundance distribution of ARGs/ MGEs in cloacal swab (C) and aerosol (AI) in chicken house were much similar. There were certain consistency of the microbial community structure and the distribution of ARGs among the three groups of chicken cloaca, air aerosol, and workers' nasopharynx. Our results highlighted that animal breeding does have a certain impact on the surrounding environment and human, and aerosols play an important role in this process.
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