TH and Parkinson disease: In a lipopolysaccharide (LPS)-induced PD mouse model, pharmacological elevation of O-GlcNAcylation through glucosamine (GlcN) or the Thiamet-G significantly ameliorated motor deficits, preserved tyrosine hydroxylase (TH)-positive dopaminergic neurons, and attenuated neuroinflammatory responses, including glial activation and inflammasome assembly.