Eijkman , Christiaan
- (1858–1930) Dutch physicianEijkman was born at Nijkerk in the Netherlands and qualified as a physician from the University of Amsterdam in 1883. He served as an army medical officer in the Dutch East Indies from 1883 to 1885, when he was forced to return to the Netherlands to recuperate from a severe attack of malaria. In 1886 he returned to the East Indies as a member of an official government committee to investigate beriberi. After the completion of the committee's work, Eijkman remained in Batavia (now Djakarta) as director of a newly established bacteriological laboratory. In 1896 he took up the post of professor of public health at the University of Utrecht.Eijkman was responsible for the first real understanding of the nature and possible cure of beriberi. For this work he shared the 1929 Nobel Prize for physiology or medicine with Frederick Gowland Hopkins. Beriberi is a disorder caused by dietary deficiency, producing fatal lesions in the nervous and cardiovascular systems. Physicians of the late 19th century, however, were not trained to recognize its cause: with the clear success of the germ theory recently demonstrated by Robert Koch it was difficult to realize that symptoms could be produced by the absence of something rather than by the more obvious presence of a visible pathogen.Eijkman's discovery was prompted by the outbreak of a disease very similar to human beriberi among the laboratory chickens. Despite the most thorough search no causative microorganisms could be identified, and then, for no obvious reason, the disease disappeared.On investigation, Eijkman discovered that the symptoms of the disease had developed during a period of five months in which the chickens' diet was changed to hulled and polished rice. With a return to their normal diet of commercial chicken feed the symptoms disappeared. Eijkman subsequently found that he could induce the disease with a diet of hulled and polished rice and cure it with one of whole rice. However, he failed to conclude that beriberi was a deficiency disease. He argued that the endosperm of the rice produced a toxin that was neutralized by the outer hull: by eating polished rice the toxin would be released in its unneutralized form.Thus although Eijkman had clearly demonstrated how to cure and prevent beriberi it was left to Hopkins to identify its cause as a vitamin deficiency. It was not until the early 1930s that Robert Williams identified the vitamin as vitamin B1 (thiamine).
Scientists. Academic. 2011.
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Eijkman, Christiaan — born Aug. 11, 1858, Nijkerk, Neth. died Nov. 5, 1930, Utrecht Dutch physician and pathologist. While seeking a bacterial cause for beriberi, he noticed a resemblance between a nerve disorder in his laboratory chickens and that seen in beriberi.… … Universalium
Eijkman, Christiaan — (11 ago. 1858, Nijkerk, Países Bajos–5 nov. 1930, Utrecht). Médico y patólogo holandés. Mientras buscaba una causa bacteriana del beriberi, notó el parecido entre este y un trastorno nervioso observado en los pollos de su laboratorio. Finalmente… … Enciclopedia Universal
Eijkman — Christiaan … Scientists
Christiaan Eijkman — Eijkman redirects here. For other uses, see Eijkman (disambiguation). Christiaan Eijkman Christiaan Eijkman Born … Wikipedia
Christiaan Eijkman — Nombre Christiaan Eij … Wikipedia Español
Christiaan Eijkmann — Christiaan Eijkman Christiaan Eijkman (* 11. August 1858 in Nijkerk, Niederlande; † 5. November 1930 in Utrecht, Niederlande) war ein niederländischer Hygieniker. Eijkman wies 1897 nach, dass durch Verfüttern von poliertem Reis bei Hühnern… … Deutsch Wikipedia
Eijkman — Christiaan Eijkman Christiaan Eijkman (* 11. August 1858 in Nijkerk, Niederlande; † 5. November 1930 in Utrecht, Niederlande) war ein niederländischer Hygieniker. Eijkman wies 1897 nach, dass durch Verfüttern von poliertem Reis bei Hühnern… … Deutsch Wikipedia
Christiaan Eijkman — (11 août 1858 à Nijkerk, Pays Bas 5 novembre 1930 à Utrecht, Pays Bas) est un médecin et pathologiste néerlandais, lauréat de l … Wikipédia en Français
Christiaan Eijkman — (* 11. August 1858 in Nijkerk; † 5. November 1930 in Utrecht) war ein niederländischer Arzt, Pathologe und Hygieniker. Er studierte in Berlin und forschte 1895 im Arbeitskreis von Robert Koch, dem späteren Nobelpreisträger … Deutsch Wikipedia
Eijkman test — Eijk·man test āk mən , īk n a test for the identification of coliform bacteria from warm blooded animals based on the bacteria s ability to produce gas when grown in glucose media at 46°C (114.8°F) Eijkman Christiaan (1858 1930) Dutch… … Medical dictionary