COVID-19	Coronavirus disease 2019
ESPEN	European Society for Clinical Nutrition and Metabolism
GAPDH	Glyceraldehyde 3-phosphate dehydrogenase
GSH	Reduced glutathione
ICU	Intensive care unit
IFN	Interferon
Ig	Immunoglobulin
IL	Interleukin
IκB	Inhibitor of κB
MDCK	Madin–Darby canine kidney cells
NADPH	Nicotinamide adenine dinucleotide phosphate
NF-κB	Nuclear factor κB
NHANES	National Health and Nutrition Survey
NK	Natural killer cells
NO	Nitric oxide
PARP	Poly(ADP-ribose) polymerase
ROS	Reactive oxygen species
TCR	T cell receptor
Th	T helper type
TNF	Tumor necrosis factor