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|1st Director of Rockefeller Institute|
|Succeeded by||Herbert Spencer Gasser|
|Born||(1863-03-25)March 25, 1863
|Died||May 2, 1946(1946-05-02) (aged 83)
New York, NY
|Residence||New York, NY|
|Alma mater||University of Louisville|
|Awards||Cameron Prize of the University of Edinburgh (1911)|
|Fields||Physician, medical educator, and experimental pathologist|
|Institutions||Johns Hopkins University; Rockefeller Institute; Oxford University (UK)|
|Doctoral students||John D. Rockefeller, Jr.|
Simon Flexner, M.D.  (March 25, 1863 in Louisville, Kentucky – May 2, 1946) was a physician, scientist, administrator, and professor of experimental pathology at the University of Pennsylvania (1899–1903). He served as the first director of the Rockefeller Institute for Medical Research (1901–1935) (later developed as Rockefeller University) and a trustee of the Rockefeller Foundation. He was also a friend and adviser to John D. Rockefeller Jr..
Among Flexner's most important achievements are studies into poliomyelitis and the development of serum treatment for meningitis. Among his lab assistants were Hideyo Noguchi and Cornelius Rhoads, later directors of Memorial Hospital and the Sloan-Kettering Institute, respectively.
The bacteria species Shigella flexneri was named in recognition of Flexner. In addition, Flexner was the first to describe Flexner-Wintersteiner rosettes, a characteristic finding in retinoblastoma, a type of cancer.
Early life and career
Simon was born in Louisville, Kentucky, to Moritz (Morris) Flexner, an immigrant from Neumark, Bohemia, via several years in Strasbourg, France; and Esther from Roden, Germany. He was the fourth son of seven in a large family of nine children: Jacob Flexner, Henry, and Isadore; then Simon, followed by Bernard Flexner, Abraham Flexner, and Washington. The two sisters Mary and Gertrude were the youngest. Jacob became a pharmacist and physician; Bernard became a Zionist leader, and Abraham became an educator, eventually influencing the direction of medical education in the United States.
Medical school and career
He returned to college, getting his medical degree from Louisville Medical College in 1889. He did postgraduate work in pathology at Johns Hopkins University Medical School, and started teaching there. By 1899, he was a professor of pathology at the University of Pennsylvania.
He taught at Penn until 1903, but was called to the Rockefeller Institute for Medical Research (later Rockefeller University), where he started serving as its first director in 1901. He managed the research institute until 1935. Through this affiliation and related work, he came to know the philanthropist John D. Rockefeller, who supported research and basic medical care.
In December 1907 Flexner declared in a reading of his paper on "Tendencies in Pathology" in the University of Chicago that it would be possible in the then-future for diseased human organs substitution for healthy ones by surgery—including arteries, stomach, kidneys and heart. These previsions became reality in the second half of the 20th century.
The institute had a long relationship with the government of Puerto Rico, conducting research and working on health issues there, such as anemia (caused by hookworm and tropical sprue), as well as polio and a variety of diseases.
In 1911, Flexner was awarded the Cameron Prize for Therapeutics of the University of Edinburgh.
Marriage and family
Simon Flexner married Helen Thomas (later professor of English) and had a family. His son James Thomas Flexner became a prolific writer; one of his works was an extensive biography of George Washington.
Dr. Flexner died in May 1946 in New York City, from a myocardial infarction (heart attack). He was 83 years old. His papers are currently housed at the American Philosophical Society and the Becker Medical Library at the Washington University School of Medicine.
- Rous, P. (1949). "Simon Flexner. 1863–1946". Obituary Notices of Fellows of the Royal Society. 6 (18): 408–426. doi:10.1098/rsbm.1949.0006.
- Flexner, S. (1900). "The Etiology of Tropical Dysentery". The British Medical Journal. 2 (2074): 917–920. JSTOR 20265833.
- Shigella flexneri at Who Named It?
- Griffen Jr, WO. "Jacob: the other Flexner". Ann Surg. 239 (6): 808–817. doi:10.1097/01.sla.0000128684.67062.39. PMC 1356289. PMID 15166960.
- "Simon Flexner | American pathologist and bacteriologist". Encyclopedia Britannica. Retrieved 2017-10-05.
- MAY TRANSPLANT THE HUMAN HEART (.PDF), The New York Times, January 2, 1908
- "Simon Flexner papers". American Philosophical Society Library. Retrieved March 11, 2018.
- "Simon Flexner Papers | Bernard Becker Medical Library Archives". beckerarchives.wustl.edu. Retrieved 2018-03-11.
- "Simon Flexner", American Philosophical Society
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