“In addition, GlcN stimulated proinflammatory cytokine release and PBA prevented these effects.”
“Very low concentrations of 4-phenyl butyric acid PBA , a chemical chaperone) inhibited only the overactivation of ER stress and UPR elicited by GlcN , leaving unaltered the part physiologically activated during differentiation, and reversed the inhibitory effect of GlcN on differentiation.”