兽类学报 ›› 2023, Vol. 43 ›› Issue (3): 304-314.DOI: 10.16829/j.slxb.150671

• 研究论文 • 上一篇    下一篇

滇金丝猴肠道微生物四环素抗性基因和肠道环境特征

邹书珍1,2, 罗亚1,2, 程鸣1,2, 王凡1,2, 黎大勇1,2, 康迪1,2, 唐贇1,2()   

  1. 1.西华师范大学生命科学学院,南充 637009
    2.西华师范大学西南野生动植物资源保护教育部重点实验室,南充 637009
  • 收稿日期:2022-03-24 接受日期:2022-10-19 出版日期:2023-05-31 发布日期:2023-05-18
  • 通讯作者: 唐贇
  • 作者简介:邹书珍 (1990- ),女,副教授,博士,主要从事微生物生态方面的研究.
  • 基金资助:
    国家自然科学基金(32070454);四川省科技厅应用基础项目(2018YJ0475);四川省自然科学基金(2023NSFSC1151)

Characteristics of tetracycline antibiotic resistance genes in intestinal microorganisms and intestinal environment of Yunnan snub-nosed monkeys

Shuzhen ZOU1,2, Ya LUO1,2, Ming CHENG1,2, Fan WANG1,2, Dayong LI1,2, Di KANG1,2, Yun TANG1,2()   

  1. 1.College of Life Science, China West Normal University, Nanchong 637009, China
    2.Key Laboratory of Southwest Wildlife Resources Conservation (China West Normal University), Ministry of Education, Nanchong 637009, China
  • Received:2022-03-24 Accepted:2022-10-19 Online:2023-05-31 Published:2023-05-18
  • Contact: Yun TANG

摘要:

野生动物肠道是微生物抗生素抗性基因 (Antibiotic resistance genes, ARGs) 的储存库,滇金丝猴 (Rhinopithecus bieti) 在动物展示区存在ARGs暴露的风险。本研究基于16S rRNA技术,测定展示区不同性别滇金丝猴的肠道微生物组成,利用定量聚合酶链反应 (quantitative polymerase chain reaction, qPCR) 技术检测其肠道微生物四环素类抗生素抗性基因 (Tetracycline antibiotic resistance genes, T-ARGs) 和可移动遗传元件 (Mobile genetic elements, MGEs) 丰度,并分析其肠道酶活性和营养物质含量特征;利用网络模型 (NetWork) 分析T-ARGs和MGEs的潜在宿主菌,简单相关关系分析肠道微生物T-ARGs和 MGEs的丰度与滇金丝猴肠道的微生态环境特征的关系。结果表明,滇金丝猴雌性和雄性肠道微生物T-ARGs和MGEs的绝对丰度差异不显著;雌性肠道中疣微菌门 (Verrucomicrobia) 和纤维杆菌门 (Fibrobacteres) 相对丰度显著低于雄性,而纤维素酶和蛋白酶活力显著高于雄性。滇金丝猴肠道微生物的T-ARGs可作为其展示区健康风险的指示因子,展示区的滇金丝猴可能存在3个风险:(1) 条件致病菌是T-ARGs的潜在宿主菌,利用四环素类抗生素对展示区的滇金丝猴进行疾病治疗时,该致病菌可能具有产生耐药性的风险;(2) 脂肪酶活力、蛋白酶活力和纤维素酶活力能够提高MGEs的转移能力,说明维持展示区滇金丝猴的肠道消化能力的管理方式可能与降低T-ARGs转移能力的目标相悖;(3) T-ARGs抑制滇金丝猴对蛋白质的消化和氨基酸的吸收。建议对展示区滇金丝猴的ARGs污染源加以控制,以保障滇金丝猴肠道微生态环境的稳定和降低致病菌的耐药性,与雌性滇金丝猴相比,雄性滇金丝猴个体的健康状况更应该重视。

关键词: 干扰, 滇金丝猴, 肠道微生物, 抗生素抗性基因, 转移风险

Abstract:

The gut of wild animals has been shown to be a reservoir for microorganisms that contain antibiotic resistance genes (ARGs). Yunnan snub-nosed monkeys (Rhinopithecus bieti) are at particular risk for ARGs. The intestinal microbial composition of female and male Yunnan snub-nosed monkeys was determined using 16S rRNA gene sequencing. Tetracycline antibiotic resistance genes (T-ARGs) and mobile genetic elements (MGEs) were detected by quantitative polymerase chain reaction (qPCR), and intestinal enzyme activities and nutrient contents of the monkeys intestinal microorganisms were analyzed. A network model was used to analyze the potential host bacteria of T-ARGs and MGEs. A simple correlative relationship was used to analyze the relationship between the abundances of T-ARGs and MGEs and the intestinal micro?ecological environment. The results showed no significant difference in the absolute abundance of T-ARGs and MGEs between female and male monkey groups. The relative abundance of Verrucomicrobia and Fibrobacteres in the intestines of the female group were significantly lower than those of the male group, while the activities of cellulase and protease content were significantly higher than those of the male group. T-ARGs could be used as an indicator of management risks of Yunnan snub-nosed monkeys in the exhibition area, who may face three potential risks. First, opportunistic pathogens in Yunnan snub-nosed monkeys are potential hosts of T-ARGs and there may be a risk of drug resistance in Yunnan snub-nosed monkeys treated with tetracycline antibiotics. Second, lipase activity, protease activity, and cellulase activity can improve the transfer ability of MGEs, which suggests that the method of maintaining intestinal digestive ability of Yunnan snub-nosed monkeys in the exhibition area may be contrary to the goal of reducing the transfer ability of T-ARGs. Third, T-ARGs may inhibit proteins being digested and amino acids being absorbed. It is suggested to control the sources of T-ARGs exposure in the exhibition area, in order to ensure the stability of the intestinal micro-ecological environment and to reduce the drug resistance of pathogenic bacteria. Furthermore, extra attention should be paid to the individual health of male Yunnan snub-nosed monkeys.

Key words: Interference, Yunnan snub-nosed monkey, Intestinal microorganism, Antibiotic resistance gene, Transfer risk

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