Abstract
Aims: This aimed to study the causative agent, epidemiology, clinical characteristics, and
treatment strategy targeting the main protease in porcine epidemic diarrhea.
Background: Porcine epidemic diarrhea (PED) is a contagious intestinal viral infection causing
severe diarrhea, vomiting, and dehydration in pigs. High rates of mortalities and severe morbidities,
approaching 100%, are reported in piglets infected with PEDV. In recent years, PED has been
observed to influence the swine-farming nations in Europe, Asia, the USA, South Korea, and
Canada. The PED virus (PEDV) transmission takes place through a faecal-oral route.
Objective: The objective is to review the characteristics of PEDV and its role in the disease. In
addition, we aim to outline some possible methods to combat PED infection, including targeting the
main protease of coronavirus and their future perspectives.
Methods: This study is a review of literature on the PED virus.
Results: Apart from symptomatic treatment and supportive care, there is no available specific
treatment for PEDV. Appropriate disinfectants and cleaning are pivotal for the control of PEDV. To
date, apart from anti-PEDV inhibitors, there are no specific drugs available commercially to treat
the disease. Therefore, 3C-like protease (3CLpro) in PEDV that has highly conserved structure and
catalytic mechanism serves as an alluring drug as it plays a vital role during viral polyprotein
processing at the time of infection.
Conclusion: A well synchronized and collective effort of scientists, swine veterinarians, pork
industry experts, and associated authorities is essential for the accomplishment of proper execution
of these required measures.
Keywords:
Coronavirus, cysteine protease, porcine epidemic diarrhea virus, target therapy, proteolysis, virus entry.
Graphical Abstract
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