Zur Frage der Verteilung der Kreatinphosphorsäure in verschiedenen Muskeln und Organen des tierischen Organismus.

Abstract

The authors studied the amount of creatin-phosphoric acid contained in muscle under different functional conditions and in various organs of the animal body. They found that white muscles, which are capable of swift contraction (such as m. biceps fem. in rabbits and m. pector. in cocks), contain much more creatin-phosphoric acid (.117 and .113%, resp.) than red muscles, contracting slowly such as m. semitend. in rabbits (.069%) and the muscles in cocks'' legs (.039%). In rabbits'' mixed muscles (m. adductor long.) the amount of creatin-phosphoric acid is intermediate (.086%) between the pure red and the pure white. Creatin-phosphoric acid has been discovered in small amounts in smooth muscles in the muscular stomach in birds, in the uterus in rabbits (from 0.013 to 0.023%) as well as in the muscles of the heart in both birds and rabbits, where its amount ranged from 0.013 to 0.049%. Creatin-phosphoric acid was found in the same small amounts in the testes of cocks and the spleen of rabbits (0.013-0.016%). In the kidneys no creatin-phosphoric acid was to be discovered.