TLR4 and fetal growth restriction: Our findings indicated that the dietary supply of L-Arg or NCG mitigated the IUGR-induced elevation of proinflammatory cytokine levels in plasma and downregulated the IUGR-induced upregulation of IL-1β, IL-6, MyD88, TLR-4, TRL-9, NF-κB, and TNF-α mRNA expression in the liver.