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中国南方腹泻猪体内[具体物种名称未给出]的分子特征分析

Molecular Characterization of spp. in Pigs with Diarrhea in Southern China.

作者信息

Wang Pei, Li Sen, Zou Yang, Han Ru-Yi, Wang Ping, Song De-Ping, Wang Cheng-Bin, Chen Xiao-Qing

机构信息

College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China.

State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China.

出版信息

Animals (Basel). 2022 Jul 9;12(14):1764. doi: 10.3390/ani12141764.

Abstract

Entamoeba spp. is a common zoonotic intestinal protozoan that can parasitize most vertebrates, including humans and pigs, causing severe intestinal diseases and posing a serious threat to public health. However, the available data on Entamoeba spp. infection in pigs are relatively limited in China. To characterize the infection of Entamoeba spp. within pigs in southern China, 1254 fecal samples of diarrheic pigs were collected from 37 intensive pig farms in Hunan, Jiangxi and Fujian provinces and the infection of Entamoeba spp. was investigated based on the small subunit rRNA (SSU rRNA) gene. The overall infection rate of Entamoeba spp. was 58.4% (732/1254), including 38.4% (118/307) in suckling piglets, 51.2% (153/299) in weaned piglets, 57.9% (55/95) in fattening pigs and 73.4% (406/553) in sows, respectively. Moreover, age and the sampling cities in Jiangxi and Fujian provinces were found to be the key factors influencing the infection of Entamoeba spp. (p < 0.05). Two subtypes (ST1 and ST3) with a zoonotic potential of Entamoeba polecki and Entamoeba suis were detected in all age groups of pigs and all sampling areas, with the predominant species and predominant subtype being E. polecki (91.3%, 668/732) and E. polecki ST1 (573/668), respectively, and E. polecki ST1 + E. polecki ST3 (78.6%, 239/304) being the most frequently detected form of mixed infection. Severe Entamoeba spp. infection and zoonotic subtypes were found in this study, exposing a large public health problem in the study area, and strategies need to be implemented to eliminate the risk in the future.

摘要

内阿米巴属是一种常见的人畜共患肠道原生动物,可寄生于包括人类和猪在内的大多数脊椎动物,引起严重的肠道疾病,对公众健康构成严重威胁。然而,在中国,关于猪感染内阿米巴属的现有数据相对有限。为了了解中国南方猪体内内阿米巴属的感染情况,从湖南、江西和福建三省的37个集约化养猪场收集了1254份腹泻猪的粪便样本,并基于小亚基核糖体RNA(SSU rRNA)基因对内阿米巴属的感染情况进行了调查。内阿米巴属的总体感染率为58.4%(732/1254),其中哺乳仔猪的感染率为38.4%(118/307),断奶仔猪为51.2%(153/299),育肥猪为57.9%(55/95),母猪为73.4%(406/553)。此外,发现年龄以及江西和福建的采样城市是影响内阿米巴属感染的关键因素(p<0.05)。在所有年龄段的猪和所有采样区域均检测到具有人畜共患潜力的极氏内阿米巴和猪内阿米巴的两个亚型(ST1和ST3),优势种和优势亚型分别为极氏内阿米巴(91.3%,668/732)和极氏内阿米巴ST1(573/668),极氏内阿米巴ST1+极氏内阿米巴ST3(78.6%,239/304)是最常检测到的混合感染形式。本研究发现了严重的内阿米巴属感染和人畜共患亚型,揭示了研究区域存在的重大公共卫生问题,未来需要实施相应策略以消除风险。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ea30/9311668/2f07ef7a2a00/animals-12-01764-g001.jpg

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