Our body temperature may not get much hotter than 37°C, but inside our cells, the heat is more intense. Inside them, the temperature can reach scorching 50°C. Our cells “burn” food in oxygen to produce energy. Unlike a fire, this is a controlled process that involves several steps but still generates a lot of heat. Pierre Rustin and his colleagues at INSERM, a French public organization exclusively dedicated to biological, medical and public health research, used a dye developed by a group in Singapore to measure the temperature inside the mitochondria of human kidneys and skin cells kept at 38°C Ç. they discover argue that mitochondria operate at temperatures at least 6 to 10°C higher than the rest of the cell. While the French study is the first to look specifically at the temperature of mitochondria, another group made a similar finding in research with a different focus. An article published in February by a team in Japan describing another temperature-sensitive fluorescent dye b
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