Evaluation of enrofloxacin in the Chinese soft-shelled turtle (Pelodiscus sinensis) based on the biochemical, histopathological and intestinal microbiota responses
文献类型： 外文期刊
作者： Zhang, Yonggang 1 ; Liu, Ying 2 ; Li, Zhaoxin 2 ; Li, Xianguo 1 ; Xing, Lihong 2 ; Wang, Shuwen 2 ; Sun, Xiaojie 2 ; Zhang, Dahai 1 ;
作者机构： 1.Ocean Univ China, Coll Chem & Chem Engn, Qingdao 266100, Peoples R China
2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Key Lab Testing & Evaluat Aquat Prod Safety & Qual, Lab Qual & Safety Risk Assessment Aquat Prod,Minis, Qingdao 266071, Peoples R China
3.Qingdao Fishery Technol Serv Stn, Qingdao 266071, Peoples R China
4.Qingdao Marine Management Support Ctr, Qingdao 266071, Peoples R China
关键词： Enrofloxacin; Pelodiscus sinensis; Hematological variables; Antioxidant status; Histopathology; Intestinal microbiota
期刊名称：AQUACULTURE （ 影响因子：4.5； 五年影响因子：4.6 ）
ISSN： 0044-8486
年卷期： 2024 年 590 卷
页码：
收录情况： SCI
摘要： Enrofloxacin (ENR) is a veterinary medicine extensively used in aquatic farming, the abuses of antibacterials can lead to drug residues and toxicity to aquatic animals. Nevertheless, its toxicological effects on the Pelodiscus sinensis remain unclear. The objective of this work was to study the toxic effects of ENR on male P. sinensis following multiple oral administration. For hematological, antioxidant status, histological and ultrastructural analyzed, male P. sinensis were orally administrated with ENR for 5 consecutive days, each at the dose of 15 (recommended dose, 1x), 45 (3 times the recommended dose, 3x), and 75 (5 times the recommended dose, 5x) mg/kg body weight (BW) daily. The effect of ENR on P. sinensis by changes in the intestinal microbiota using high-throughput sequencing technology was also investigated. Samples of blood and fresh tissue (liver, spleen, intestine, muscle, spermary, testes, heart, lung, and kidney) were collected after 24 h of drug withdrawal. The results showed that multiple oral administration of ENR induced immunosuppression (lowered total proteins, alkaline phosphatase, and albumin), hepatic-renal dysfunction (elevated aspartate transaminase, alanine aminotransferase, urea nitrogen, K+ and Ca2+), and lowering the hepatic and splenic antioxidant functions (higher MDA, and declines in the activities of SOD, CAT, and NOS) in 3x ENR-dosed or 5x ENR-dosed groups. Noteworthy, histopathological and ultrastructural examination of tissue samples revealed adverse effects with increasing oral dosage of ENR. The 16S sequencing analysis showed that the ENR treatment can greatly change the intestinal microbial diversity and abundance in P. sinensis, but more probiotics such as Cetobacterium, Lactococcus, and Paraclostridium were retained in the short-term period. The findings may provide new insights into the toxicity of ENR to P. sinensis, and help to determine the dose to ensure the safety of aquatic food products.
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