The present invention relates to pharmaceutical compositions for inhibiting inflammation or growth of tumor cells, and uses of Au nanoparticles. The pharmaceutical composition for inhibiting inflammation, which is resulted from the excessive generation of cytokines, comprises: an effective amount of Au nanoparticles, wherein the particle size of the An nanoparticles is 2.5-40 nm and at least one selected from the group consisting of pharmaceutically acceptable solvents, carriers, excipients, adjuvants, and salts thereof.本發明係有關於一種抑制發炎反應或腫瘤細胞生長之醫藥組成物、及金奈米粒子之用途。其中,抑制因細胞激素過度產生所導致之發炎反應之醫藥組成物,包括:一治療上有效劑量之金奈米粒子,其中該金奈米粒子之粒徑係為2.5-40 nm;以及至少一選自由醫藥上可接受之溶劑、載劑、賦型劑、佐劑、及其鹽類所組成之群組。
