**About the Special Issue Editors**

**Sergio Di Meo** was a Professor of Physiology at the University Federico II, Naples, Italy. At the beginning of his academic career, he primarily focused on electrophysiology. He then continued his research activity by studying ROS production and cellular state redox in different experimental conditions, such as ischemia reperfusion, experimental and functional hyperthyroidism, and acute exercise and training, mainly in experimental mammal models. He currently continues to collaborate with the physiology section in the Department of Biology at Federico II University, Naples, Italy.

**Paola Venditti** is a Professor of Physiology at the University Federico II, Naples, Italy. She received her degree in 1990 from the University of Naples, Italy, and continued her research on the detection and measurement of mitochondrial free radical production, antioxidant activities, and oxidative-derived molecular damage. Following this, she received her Ph.D. degree in Physiology in 1996 from the University of Ferrara, Italy, and has since followed the role of oxidative stress in several conditions. In particular, she studies the role played by free radicals in tissues' functional adaptations to physio-pathological conditions, in which tissue oxidative stress develops (alteration of thyroid state, physical activity, exposition to xenobiotics, cold exposure, ischemia reperfusion, etc.) and the ROS-sensitive factors involved in the control of mitochondrial biogenesis and adaptation of the antioxidant system.

**Gaetana Napolitano** is a Researcher in Physiology at the Science and Technology Department (DIST) of the Parthenope University of Naples, Italy. She received her degree in 2009 from the University Federico II, Naples, Italy, and subsequently her Ph.D. in Physiology under the supervision of Professor Paola Venditti. She studies the involvement of mitochondrial reactive oxygen species and free radicals in functional adaptations associated with various physio-pathological conditions. Her main interests concern the physiology of mammals (insulin resistance, training, acute exercise, experimental and functional hyperthyroidism, antioxidant supplementation) and physiological adaptations of both marine and freshwater aquatic organisms following environmental pollution (micro- and nano- plastic pollution, nitrite pollution, food dye pollution, and exposition to xenobiotics).
