1914 – American biochemist Edward C. Kendall isolated the thyroid hormone thyroxine from the thyroid gland removed surgically from patients. The isolated thyroxine proved to be fully active in relieving the symptoms of hypothyroidism.
Thyroxine is an important metabolic hormone that controls the speed of carbohydrate metabolism and the synthesis and breakdown of proteins.
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1876 – Adolf Windaus was born (25.12.1876.-09.06.1959.), the German organic chemist who was awarded the 1928 Nobel Prize in the field of human nutrition. The award was given for his studies of the sterols structure and their connection with vitamins.
Windaus began studying sterols in 1901 when nothing was known about the biochemistry of these compounds. In 1926 he proved that ultraviolet light (from sunlight or laboratory sources) activates ergosterol in the process of formation of vitamin D. Later he produced vitamin D3 by chemical synthesis, discovered histamine, and contributed to the synthesis of several B vitamins.
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