Inhibitory effect of Buddlejasaponin IVb on porcine epidemic diarrhea virus in vivo and in vitro.
Vet Microbiol
; 272: 109516, 2022 Sep.
Article
in English
| MEDLINE | ID: covidwho-1991332
ABSTRACT
Porcine epidemic diarrhea virus (PEDV) is one of the main pathogens causing severe diarrhea in piglets. Infection of the host induces apoptosis, causing huge economic losses to the pig industry. At present, the preventive and therapeutic effects of commercial vaccines are not satisfactory, and it is necessary to develop new anti-PEDV drugs. In this study, we screened the PEDV-inhibiting drug Buddlejasaponin IVb from the natural product library, and determined the inhibitory effect of Buddlejasaponin IVb on PEDV proliferation in a dose-dependent manner. By exploring the effect of Buddlejasaponin IVb on the life cycle of PEDV, it was found that Buddlejasaponin IVb mainly inhibits the replication and release stages of PEDV, but there is no report at home and abroad. In addition, Buddlejasaponin IVb can inhibit PEDV-activated NF-κB signaling pathway by downregulating PEDV or LPS induced elevation of cytokine levels (IL-6, IL-8, IL-1ß, TNF-α). Finally, we returned to in vivo experiments to explore the antiviral effects of the drug in pigs. The results show that Buddlejasaponin IVb can effectively relieve the clinical symptoms and intestinal damage caused by PEDV infection in pigs. Therefore, this study will provide an important basis for the research on antiviral drugs of PEDV and its members, and at the same time provide guidance for the actual production, which has important application prospects.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Saponins
/
Swine Diseases
/
Coronavirus Infections
/
Porcine epidemic diarrhea virus
Type of study:
Experimental Studies
/
Prognostic study
Topics:
Vaccines
Limits:
Animals
Language:
English
Journal:
Vet Microbiol
Year:
2022
Document Type:
Article
Affiliation country:
J.vetmic.2022.109516
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