Provided are methods of attenuating release of a proinflammatory cytokine from a mammalian cell. Also provided are methods of inhibiting or treating an inflammatory cytokine cascade in a mammal. Further provided are methods of treating a mammal at risk for or undergoing sepsis, septicemia, and/or endotoxic shock. Additionally provided are methods of attenuating NO release from a mammalian cell. Also provided are methods of attenuating NO production in a mammal at risk for, or having, a disorder mediated by excessive NO production.