Eimeria tenella induces the release of chicken heterophil extracellular traps

Publication date: Available online 24 September 2019Source: Veterinary ParasitologyAuthor(s): Zhengkai Wei, Yingchi Zhao, Nan Zhang, Zhen Han, Xiao Liu, Aimin Jiang, Yong Zhang, Chaoqun Wang, Pengtao Gong, Jianhua Li, Xichen Zhang, Zhengtao YangAbstractAvian coccidiosis makes a great threat and economic loss to the poultry industry, and fully understanding the innate immune response of chicken against E. tenella infection will play a significant role in avian coccidiosis prevention and treatment. Extracellular traps have been reported as a novel defense mechanism of host against pathogens infection. However, the interaction between chicken heterophil extracellular traps and E. tenella has remained not well known. Thus, this study aims to investigate the effects of E. tenella on chicken heterophil extracellular traps (ETs), and try to clarify the regulatory mechanisms in this process. E. tenella-triggered chicken heterophil ETs structures were analyzed by using scanning electron microscopy (SEM) and scanning confocal microscope. Inhibitors and Pico Green® were used to quantify E. tenella - triggered chicken heterophil ETs release. The results showed that E. tenella sporozoites significantly induced chicken heterophil ETs-like structures release, and histone and elastin co-existed with DNA in these structures of chicken heterophil ETs. Furthermore, it was also demonstrated that NADPH, p38 or Rac1 signaling pathways participated in E. tenella sporozoites-induced chicken heterop...
Source: Veterinary Parasitology - Category: Veterinary Research Source Type: research