Prevalence and molecular subtyping of Blastocystis in domestic pigeons in Henan Province, Central China
2022
Su, Changwei | Mei, Xuefang | Wei, Lai | Wang, Jiawen | Feng, Xia | Wang, Pei | He, Bo | Chang, Yuan | Xu, Fuyang | Wang, Mingyong | Tian, Xiaowei | Zhang, Zhenchao | Li, Xiangrui | Wang, Shuai
Blastocystis is an anaerobic intestinal protozoan parasite found in humans and many kinds of animals that mainly causes diarrhea, abdominal pain, and other clinical symptoms. At present, research on the prevalence and subtype diversity of Blastocystis in domestic pigeons is very limited. The purpose of this study was to detect the infection rate and gene subtype distribution of Blastocystis in domestic pigeons in Henan Province, Central China, to provide a foundation for preventing and controlling Blastocystis in domestic pigeons. Fecal DNA was extracted from 504 fresh fecal samples of pigeons collected from four areas in Henan Province, Central China. All DNA samples were investigated by polymerase chain reaction, and positive samples were sequenced to analyze the gene subtypes based on small ribosomal subunit (SSU rRNA) gene. The overall infection rate of Blastocystis in pigeons in Henan Province was 7.7% (39/504). Four subtypes (STs) of Blastocystis were identified including ST1 (2/39, 5.1%), ST3 (16/39, 41%), ST4 (1/39, 2.6%), and ST7 (20/39, 51.3%), all of which belonged to zoonotic subtypes, and ST7 was the dominant gene subtype. The results show that Blastocystis infection is common in domestic pigeons in Henan Province, Central China, and the pathogens were zoonotic subtypes. Particular attention should be given to reducing the risk of transmission of Blastocystis from domestic pigeons to humans.
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