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Antibiotic Resistance Genes Occurrence in Wastewaters from Selected Pharmaceutical Facilities in Nigeria
Water ( IF 3.4 ) Pub Date : 2020-07-03 , DOI: 10.3390/w12071897
Amarachukwu Obayiuwana , Abasiofiok M. Ibekwe

The proliferation of antibiotic-resistant bacteria (ARB) and the prevalence of antibiotic resistance genes (ARGs) in wastewaters are well-established factors that contribute to the reduced potency of antibiotics used in healthcare worldwide. The human health risk associated with the proliferation of ARB and ARGs need to be understood in order to design mitigation measures to combat their dissemination. Using the PCR analysis of genomic DNA, the prevalence of 41 ARGs active against the commonly used six classes of antibiotics was evaluated in 60 bacterial isolates obtained from pharmaceutical wastewaters in Nigeria. The ARGs most frequently detected from the bacterial isolates in each of the antibiotic classes under study include catA1 (58.3%); sulI (31.7%); tet(E) (30%); aac(3)-IV (28.3%); ermC (20%); blaTEM, blaCTX-M, blaNDM-1 at 18.3% each; which encode for resistance to chloramphenicol, sulfonamides, tetracycline, aminoglycoside, macrolide-lincosamide-streptogramin and β-lactams and penicillins, respectively. Acinetobacter spp., accession number MH396735 expressed the highest number of ARGs of all the bacterial isolates, having at least one gene that encodes for resistance to all the classes of antibiotics in the study. This study highlights wide distribution of ARB and ARGs to the antibiotics tested in the wastewater, making pharmaceutical wastewater reservoirs of ARGs which could potentially be transferred from commensal microorganisms to human pathogens.

中文翻译:

尼日利亚选定制药设施废水中出现抗生素抗性基因

抗生素抗性细菌 (ARB) 的增殖和废水中抗生素抗性基因 (ARG) 的流行是导致全球医疗保健中使用的抗生素效力降低的公认因素。需要了解与 ARB 和 ARG 扩散相关的人类健康风险,以便设计缓解措施以防止其传播。使用基因组 DNA 的 PCR 分析,在从尼日利亚制药废水中获得的 60 种细菌分离物中评估了 41 种对常用的六类抗生素有活性的 ARG 的流行率。在所研究的每个抗生素类别中,从细菌分离物中最常检测到的 ARG 包括 catA1 (58.3%);硫 (31.7%); tet(E) (30%); aac(3)-IV (28.3%);ermC (20%); blaTEM、blaCTX-M、blaNDM-1 各 18.3%;分别编码对氯霉素、磺胺类、四环素、氨基糖苷类、大环内酯-林可酰胺-链球菌素和β-内酰胺类和青霉素类的抗性。Acinetobacter spp.,登录号 MH396735 在所有细菌分离物中表达最多数量的 ARG,至少有一个基因编码对研究中所有类别的抗生素的抗性。这项研究强调了 ARB 和 ARG 在废水中测试的抗生素的广泛分布,使制药废水成为 ARG 的蓄水池,这些 ARG 可能从共生微生物转移到人类病原体。登录号 MH396735 表达了所有细菌分离株中数量最多的 ARG,至少有一个基因编码对研究中所有类别的抗生素的抗性。这项研究强调了 ARB 和 ARG 在废水中测试的抗生素的广泛分布,使制药废水成为 ARG 的蓄水池,这些 ARG 可能从共生微生物转移到人类病原体。登录号 MH396735 表达了所有细菌分离株中数量最多的 ARG,至少有一个基因编码对研究中所有类别的抗生素的抗性。这项研究强调了 ARB 和 ARG 在废水中测试的抗生素的广泛分布,使制药废水成为 ARG 的蓄水池,这些 ARG 可能从共生微生物转移到人类病原体。
更新日期:2020-07-03
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