Background
Jean-Louis Prévost was born on September 1, 1790, in Geneva, Switzerland.
University of Edinburgh, Edinburgh, Scotland, United Kingdom
After studying in Paris, Prevost went to Edinburgh, where from 1816 to 1818 he studied for his doctorate in medicine.
University of Paris, Paris, France
In 1814 Prevost went to Paris, where he remained for two years.
Prevost's achievement in setting forth the classic laws governing the development of the fertilized egg brought Prevost and his collaborator Dumas the Prix Montyon of the Paris Academy of Sciences.
educator embryologist neurologist physiologist neuroscientist
Jean-Louis Prévost was born on September 1, 1790, in Geneva, Switzerland.
In 1814 Prevost went to Paris, where he remained for two years, and then to Edinburgh, where from 1816 to 1818 he studied for his doctorate in medicine. Having obtained it, he went to Dublin, doubtless to familiarize himself with the details of medical practice.
After obtaining his Doctor of Medicine degree, Prevost went to Dublin, doubtless to familiarize himself with the details of medical practice. Prevost then returned to Geneva, where he set up a practice; but research soon seemed more attractive than the sick, and he turned to microscopy and the study of modern chemistry.
He assembled a group of collaborators with whom he wrote important memoirs: A. Le Royer, H. Lebert, Antoine Morin, and Jean-Baptiste Dumas. Prevost was concerned with the care of the indigent sick; and assisted by a few friends, including Louis Gosse, he founded a hospital where the poor could be cared for without charge - undoubtedly the first outpatient hospital in Europe.
In “Sur les animalcules spermatiques de divers animaux” (1821), written with Dumas, Prevost made a histological examination of spermatozoa and proved, for the first time, that these cells originate in certain tissues of the male sex glands.
In 1824, again in collaboration with Dumas, Prevost published three memoirs on generation in the Annates ctes sciences naturelles that are considered the foundation of experimental embryology. Through their analysis of segmentation of the frog's egg, Prevost and Dumas confirmed the research of Swammerdam and of K. E. von Baer, and set forth the classic laws governing the development of the fertilized egg. These achievements brought Prevost and Dumas the Prix Montyon of the Paris Academy of Sciences.
Prevost next turned to new fields and, with Le Royer, published "Observations sur les contenus du canal digestif" (1825), a six-page memoir in which they expounded an advanced theory of digestion. For Prevost physiology was inseparable from chemistry, and thus he became one of the first biochemists. A work published in 1828 was the first of a series of investigations on the circulation of the blood, and a note on the circulation in the ruminant fetus also showed original observations.
With Morin, Prevost published “Recherches physiologiques et chimiques sur la nutrition du foetus" (1841), followed by two works written with Lebert, “Sur la formation des organes de la circulation et du sang chez les batraciens” (1844), and “Observations sur le developpement du coeur chez le poulet” (1847).
Jean-Louis Prévost's major achievement was in the discovery of the ovum in mammals. This was derived from the series of histological examinations of spermatozoa, which proved, for the first time, that these cells originate in certain tissues of the male sex glands. His observations were the culmination of a series of experimental researches, including those of Spallanzani, which prepared the way for modern discoveries in fertilization.
His three memoirs on generation in the Annates ctes sciences naturelles, which he published in 1824, are considered the foundation of experimental embryology. His achievement in setting forth the classic laws governing the development of the fertilized egg brought Prevost and his collaborator Dumas the Prix Montyon of the Paris Academy of Sciences.
Prevost should be considered a pioneer in hematology. Through his analysis of the composition of the blood and the nature of its circulation, as well as in his studies of the origin and evolution of the heart and blood vessels, he proved to be a remarkable physiologist and embryologist.
Also, he was the founder of a hospital where the poor could be cared for without charge, which was the first outpatient hospital in Europe.