Tomoya Fujie, Ph.D., is a Senior Assistant Professor in the Laboratory of Environmental Health, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Japan. His research focuses on vascular toxicology and endothelial cell biology, with particular interest in the effects of environmental pollutants such as per- and polyfluoroalkyl substances (PFAS) and heavy metals on vascular function and dysfunction. His work aims to clarify the molecular mechanisms underlying environmentally induced cardiovascular toxicity and endothelial injury.