|Simon Flexner, M.D.|
|Born||March 25, 1863
|Died||May 2, 1946
New York, NY
|Residence||New York, NY|
|Fields||Physician & Medical educator & Experimental pathologist|
|Institutions||Johns Hopkins University; Rockefeller Institute; Oxford University (UK)|
|Alma mater||University of Louisville|
|Doctoral students||John D. Rockefeller, Jr.|
Simon Flexner, M.D. ForMemRS (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..
Amongst 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 director of Memorial Hospital and the Sloan-Kettering Institute.
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.
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.
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?
- Ward O. Griffen, Jr, MD, PhD. "Jacob; The Other Flexner", Annals of Surgery, 2004 June; 239(6): 808–817, hosted at National Library of Medicine, NIH, accessed 23 October 2013
- "Simon Flexner", American Philosophical Society