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Abstract Heat stroke is a serious pathological condition with high mortality. Vascular endothelial cell injury is a key feature in the pathogenesis of heat stroke, but the specific pathophysiological process whereby this occurs is still unclear. Currently, relevant studies are primarily based upon examination of apoptosis. Recently, pyroptosis, a new form of inflammation-related programmed cell death, was also demonstrated to be involved in heat stroke pathophysiology. Herein, we present evidence that vascular endothelial cell pyroptosis can be induced by heat stress in a time- and temperature-dependent manner. Furthermore, this process can be significantly inhibited by GSDMD siRNA. These findings suggest a new therapeutic target for heat stroke. [ABSTRACT FROM AUTHOR]