Johann Jakob Wepfer (December 23, 1620 – January 26, 1695) was a Swiss pathologist and pharmacologist who was a native of Schaffhausen.
He studied medicine in Strasbourg, Basel and Padua, and in 1647 returned to Schaffhausen to practice medicine. Here he maintained a practice that extended into southern Germany. During his career he also served as a private physician and consultant to various members of royalty.
Wepfer is remembered for his work involving vascular anatomy of the brain, and the study of cerebrovascular disease. He was the first physician to hypothesize that the effects of a stroke were caused by bleeding in the brain. He also mentioned that these symptoms could be caused by a blockage of one of the main arteries that supply blood to the brain. From postmortem studies, he provided information on the carotid and vertebral arteries that supply the brain with blood. in 1658 he published a classic treatise on strokes, titled Historiae apoplecticorum.
Wepfer made important contributions in the fields of experimental pharmacology and toxicology. He conducted experiments on the toxicity of water hemlock, hellebore, monkshood, and warned against the usage of arsenic, antimony, and mercury in medicine. In the fields of pharmacology/toxicology he published an influential work on water and poison hemlock called Cicutae aquaticae historia et noxae (1679).
Since 2005 an annual award for stroke research, named after Wepfer, is awarded at the European stroke conference.,
The "Johann Jacob Wepfer Award" of the European Stroke Conference honors scientists for their outstanding scientific work in the field of cerebrovascular diseases and significant contributions to our knowledge about treatment of acute stroke.
This award was dedicated to:
Prof. J.-C. Baron, United Kingdom in 2005
Prof. M. Kaste, Finland in 2006
Prof. C. Warlow, United Kingdom in 2007
Prof. M.G. Bousser, France in 2008
Prof. JP Mohr, USA in 2009
Prof. J. van Gijn, The Netherlands in 2010
Prof. W.D. Heiss, Germany 2011
Prof. L. Caplan, USA 2012
Prof. H.-C. Diener, Germany and Prof. W.Hacke, Germany 2013