Guillemin , Roger

Guillemin , Roger
(1924–) French–American physiologist
Guillemin was educated at the universities of Dijon (his native city), Lyons, and Montreal, where he gained his PhD in physiology and experimental medicine in 1953. The same year he moved to America to join the staff of the Baylor University Medical School, Houston. In 1970 Guillemin joined the staff of the Salk Institute in La Jolla, California, where he remained until 1989, when he moved to the Whittier Institute for Diabetes and Endocrinology, La Jolla, becoming its director in 1993.
Early in his career Guillemin decided to work on the hypothesis of Geoffrey Harris that the pituitary gland is under the control of hormones produced by the hypothalamus. As the anterior pituitary secretes a number of hormones it was far from clear which to begin with. He eventually decided to search for the hypothalamic factor that controls the release of the adrenocorticotrophic hormone (ACTH) from the pituitary – it is known as the corticotrophic releasing factor (CRF). As it turned out, this was an unfortunate choice for after seven years Guillemin had nothing to show for his not inconsiderable efforts. Guillemin then worked for a further six years fruitlessly searching for the thyrotropin releasing factor (TRF), exposing him to skepticism from many other workers in the endocrine field.
The main difficulty was that such hormones were present in very small quantities. When Guillemin finally did succeed in 1968 in isolating one milligram of TRF it had come from 5 million sheep's hypothalami. It turned out to be a small, relatively simple tripeptide, easy to synthesize. The development of the radioimmunoassay method for the detection of minute quantities by Rosalyn Yalow was also of considerable help. Other successes quickly followed. Andrew Schally isolated the luteinizing-hormone releasing factor in 1971 and Guillemin in 1972 succeeded with somatostatin, which controls the release of the growth hormone.
In 1977 Guillemin shared the Nobel Prize for physiology or medicine with Schally and Yalow.

Scientists. . 2011.

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  • Guillemin, Roger — ► (n. 1924) Médico estadounidense. Fue premio Nobel de Medicina y Fisiología en 1977, compartido con R. S. Yalow y A. V. Schelly, por sus trabajos sobre la hipófisis …   Enciclopedia Universal

  • Guillemin, Roger Charles Louis — ▪ American physiologist born Jan. 11, 1924, Dijon, France       French born American physiologist whose researches into the hormones produced by the hypothalamus gland resulted in his being awarded a share (along with Andrew Schally (Schally,… …   Universalium

  • Guillemin, Roger C(harles) L(ouis) — born Jan. 11, 1924, Dijon, Fr. French born U.S. physiologist. He and his colleagues discovered, isolated, and synthesized hypothalamic hormones that regulate thyroid activity, cause the pituitary to release growth hormone, and regulate the… …   Universalium

  • Guillemin, Roger C(harles) L(ouis) — (n. 11 ene. 1924, Dijon, Francia). Fisiólogo estadounidense nacido en Francia. Junto con sus colegas descubrió, aisló y sintetizó las hormonas hipotalámicas que regulan la actividad tiroidea, hacen que la hipófisis libere hormona del crecimiento… …   Enciclopedia Universal

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  • Guillemin — Guillemin, Roger …   Enciclopedia Universal

  • Roger Guillemin — Roger Charles Louis Guillemin (* 11. Januar 1924 in Dijon, Côte d Or, Frankreich) ist ein französisch amerikanischer Biochemiker. Guillemin schloss an der Universität Dijon mit dem B. A. und dem B. Sc. ab, danach an der Universität Lyon mit dem M …   Deutsch Wikipedia

  • Guillemín — Guillemin ist der Familienname folgender Personen: Francisco Romano Guillemín (1884–1950), mexikanischer Künstler Henri Guillemin (1903–1992), französischer Historiker Jean Baptiste Antoine Guillemin (1796–1842), französischer Botaniker Roger… …   Deutsch Wikipedia

  • Roger Guillemin — Pour les articles homonymes, voir Guillemin. Roger Guillemin Naissance 11 janvier 1924 Dijon (France) Nationalité …   Wikipédia en Français

  • roger — /roj euhr/, interj. 1. Informal. all right; O.K. 2. message received and understood (a response to radio communications). 3. (often cap.) See Jolly Roger. 4. (formerly used in communications to represent the letter R.) [from the name Roger; in… …   Universalium