Detection of Vancomycin Resistant Genes in Intrinsically Antibiotic Resistant Bacteria from the Gut Microbiota of Indonesian Individuals.

IF 1.6 Q2 MEDICINE, GENERAL & INTERNAL Iranian Journal of Medical Sciences Pub Date : 2024-05-01 DOI:10.30476/IJMS.2023.98767.3087
Arif Luqman, Jongkon Saising, Yulianto Ade Prasetya, Aparna Viswanathan Ammanath, Andini, Siti Nur Amala, Enny Zulaika, Nengah Dwianita Kuswytasari, Friedrich Goetz, Anjar Tri Wibowo
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Abstract

Background: Antibiotic resistance is a global public health concern that has been exacerbated by the overuse and misuse of antibiotics, leading to the emergence of resistant bacteria. The gut microbiota, often influenced by antibiotic usage, plays a crucial role in overall health. Therefore, this study aimed to investigate the prevalence of antibiotic resistant genes in the gut microbiota of Indonesian coastal and highland populations, as well as to identify vancomycin-resistant bacteria and their resistant genes.

Methods: Stool samples were collected from 22 individuals residing in Pacet, Mojokerto, and Kenjeran, Surabaya Indonesia in 2022. The read count of antibiotic resistant genes was analyzed in the collected samples, and the bacterium concentration was counted by plating on the antibiotic-containing agar plate. Vancomycin-resistant strains were further isolated, and the presence of vancomycin-resistant genes was detected using a multiplex polymerase chain reaction (PCR).

Results: The antibiotic resistant genes for tetracycline, aminoglycosides, macrolides, beta-lactams, and vancomycin were found in high frequency in all stool samples (100%) of the gut microbiota. Meanwhile, those meant for chloramphenicol and sulfonamides were found in 86% and 16% of the samples, respectively. Notably, vancomycin-resistant genes were found in 16 intrinsically resistant Gram-negative bacterial strains. Among the detected vancomycin-resistant genes, vanG was the most prevalent (27.3%), while vanA was the least prevalent (4.5%).

Conclusion: The presence of multiple vancomycin resistance genes in intrinsically resistant Gram-negative bacterial strains demonstrated the importance of the gut microbiota as a reservoir and hub for the horizontal transfer of antibiotic resistant genes.

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从印度尼西亚人的肠道微生物群中发现耐万古霉素细菌的基因
背景:抗生素耐药性是一个全球性的公共卫生问题,过度使用和滥用抗生素导致耐药菌的出现,从而加剧了这一问题。肠道微生物群常常受到抗生素使用的影响,对整体健康起着至关重要的作用。因此,本研究旨在调查印尼沿海和高原人群肠道微生物群中抗生素耐药基因的流行情况,并鉴定万古霉素耐药细菌及其耐药基因:方法:2022 年,研究人员从居住在印度尼西亚泗水市 Pacet、Mojokerto 和 Kenjeran 的 22 名居民中采集了粪便样本。对采集样本中抗生素耐药基因的读数进行分析,并通过将细菌培养在含抗生素的琼脂平板上对细菌浓度进行计数。进一步分离耐万古霉素菌株,并使用多重聚合酶链式反应(PCR)检测耐万古霉素基因的存在:结果:在所有粪便样本(100%)的肠道微生物群中,四环素类、氨基糖苷类、大环内酯类、β-内酰胺类和万古霉素的抗生素耐药基因出现频率较高。同时,在 86% 和 16% 的样本中分别发现了氯霉素和磺胺类药物。值得注意的是,在 16 种具有内在耐药性的革兰氏阴性菌株中发现了耐万古霉素基因。在检测到的万古霉素耐药基因中,vanG 的流行率最高(27.3%),而 vanA 的流行率最低(4.5%):结论:内在耐药性革兰氏阴性细菌菌株中存在多种万古霉素耐药基因,这表明肠道微生物群是抗生素耐药基因水平转移的重要贮库和枢纽。
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来源期刊
Iranian Journal of Medical Sciences
Iranian Journal of Medical Sciences MEDICINE, GENERAL & INTERNAL-
CiteScore
3.20
自引率
0.00%
发文量
84
审稿时长
12 weeks
期刊介绍: The Iranian Journal of Medical Sciences (IJMS) is an international quarterly biomedical publication, which is sponsored by Shiraz University of Medical Sciences. The IJMS intends to provide a scientific medium of com­muni­cation for researchers throughout the globe. The journal welcomes original clinical articles as well as clinically oriented basic science re­search experiences on prevalent diseases in the region and analysis of various regional problems.
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