Arthus

Arthus

Nicolas Maurice Arthus was a French immunologist and physiologist. The Arthus reaction, a localized inflammatory response, is named after him.

Arthus was born January 9, 1862 in Angers, France. He studied medicine in Paris and received his doctorate in 1886. In 1896 he became Professor of Physiology at the University of Fribourg, Switzerland. He returned to France to work at the Pasteur Institute in 1900, and later taught at the Ecole de Médecine de Marseilles (currently integrated in the University of the Mediterranean). In 1907, he was appointed to the Chair of Physiology at the University of Lausanne in Switzerland, where he remained for twenty-five years. He died in Fribourg on February 24, 1945.

Apart from the reaction named after him, Arthus is best known for his work on anaphylaxis. He also studied snake venom and the role of calcium in the coagulation of blood.

Arthus studied in Paris and was conferred doctor of medicine in 1886. In 1890 he became Chef de conférances phsyiologiques at the Sorbonne, and in 1895 was appointed Professor of Physiology at the University of Friburg in Switzerland.

After five years, in 1900, he returned to France to become Chef de laboratoire at the Institut Pasteur in Lille. In 1903 he became professor of physiology at the Ecole de Médecine in Marseilles and in 1907, following the death of Alexander Herzen (1839–1906), he was offered the Chair of Physiology at the University of Lausanne.

In 1890 he commenced working on the coagulation of milk and with Calixte Pageo showed that the conversion of caseinogen to casein required calcium, as had already been shown for blood coagulation. He introduced the use of sodium oxalate as an anticoagulant for blood and milk. He commenced working on anaphylaxis in 1903, following its demonstration by Paul Portier (1866–1962) and Charles Robert Richet (1850–1935) who injected extract of marine animals into dogs.

He made numerous contributions to the understanding of the immune and allergic mechanisms of serum. His important work on anaphylaxis and immunity was written while Arthus was professor of physiology at the University of Lausanne. Arthus studied subcutaneous injections of horse serum into rabbits. After the fourth injection he noted that absorption was slow and a local oedematous reaction occurred; after the fifth it became purulent and after the seventh gangrenous. Intravenous injection, however, produced characteristic anaphylaxis, with rapid respiration, hypotension and incoagulability of the blood and if a high enough dose was given, respiratory and cardiac death.

He also studied the actions of snake venoms, initially separating them into three types, the cobra (Naja tripudiens) causing death by respiratory arrest, the Russel viper causing massive blood coagulation, and the Crotalas adamanteus, producing death by shock. Careful analysis of these effects in animals using small repeated doses of cobra venom made the animal resistant to muscular paralysis but resulted in death from shock. He then developed antivenin by treating the venom with formalin prior to injection in the animal.

His final years were devoted to study of physiological effects of the products of microorganisms.

Arthus modelled himself on Claude Bernard - he was particularly critical of theories which could not be tested and insisted on distinguishing such from hypotheses which could be subjected to laboratory testing.

Excerpt from www.whonamedit.com, thanks to René Dreuille for information submitted.