Xue et al. examined the regulation of lipids and the anti-inflammatory function exerted by AD and evaluated the underlying molecular mechanisms using ox-LDL-stimulated foam cells derived from rat peritoneal macrophages and showed that AD markedly alleviated lipid deposition in foam cells as it inhibited the ox-LDL-induced expression of MMP-9. The gene discussed is MMP9; the disease is Alzheimer disease.