Johann Conrad Brunner (16 January 1653 – 2 October 1727) was a Swiss

anatomist Anatomy () is the branch of biology concerned with the study of the structure of organisms and their parts. Anatomy is a branch of natural science that deals with the structural organization of living things. It is an old science, having its ...

, especially cited for his work on the

pancreas The pancreas is an organ of the digestive system and endocrine system of vertebrates. In humans, it is located in the abdomen behind the stomach and functions as a gland. The pancreas is a mixed or heterocrine gland, i.e. it has both an end ...

and

duodenum The duodenum is the first section of the small intestine in most higher vertebrates, including mammals, reptiles, and birds. In fish, the divisions of the small intestine are not as clear, and the terms anterior intestine or proximal intestine m ...

Life

Brunner was born in

Diessenhofen Diessenhofen is a village and a municipality in Frauenfeld District in the canton of Thurgau in Switzerland. The village is situated on the south shore of the High Rhine just opposite the German town of Gailingen am Hochrhein. History Diessenhofe ...

, and studied medicine in

Schaffhausen Schaffhausen (; gsw, Schafuuse; french: Schaffhouse; it, Sciaffusa; rm, Schaffusa; en, Shaffhouse) is a list of towns in Switzerland, town with historic roots, a municipalities of Switzerland, municipality in northern Switzerland, and the ...

Strasbourg Strasbourg (, , ; german: Straßburg ; gsw, label=Bas Rhin Alsatian, Strossburi , gsw, label=Haut Rhin Alsatian, Strossburig ) is the prefecture and largest city of the Grand Est region of eastern France and the official seat of the Eu ...

, Amsterdam, London and Paris. At Schaffhausen he studied under Johann Jakob Wepfer (1620–1695), who was also his father-in-law. He received his doctorate in 1672 from the

University of Strasbourg The University of Strasbourg (french: Université de Strasbourg, Unistra) is a public research university located in Strasbourg, Alsace, France, with over 52,000 students and 3,300 researchers. The French university traces its history to the ea ...

. Beginning in 1686 he was a professor of

anatomy Anatomy () is the branch of biology concerned with the study of the structure of organisms and their parts. Anatomy is a branch of natural science that deals with the structural organization of living things. It is an old science, having its ...

and

physiology Physiology (; ) is the scientific study of functions and mechanisms in a living system. As a sub-discipline of biology, physiology focuses on how organisms, organ systems, individual organs, cells, and biomolecules carry out the chemical ...

at the

University of Heidelberg } Heidelberg University, officially the Ruprecht Karl University of Heidelberg, (german: Ruprecht-Karls-Universität Heidelberg; la, Universitas Ruperto Carola Heidelbergensis) is a public research university in Heidelberg, Baden-Württemberg, ...

. In 1716, Brunner was appointed personal physician to Charles III Philip the new

Elector Elector may refer to: * Prince-elector or elector, a member of the electoral college of the Holy Roman Empire, having the function of electing the Holy Roman Emperors * Elector, a member of an electoral college ** Confederate elector, a member of ...

of the Palatinate. He received many accolades during his life including a knighthood with the title "Brunn von Hammerstein". He died in 1727 in

Mannheim Mannheim (; Palatine German: or ), officially the University City of Mannheim (german: Universitätsstadt Mannheim), is the second-largest city in the German state of Baden-Württemberg after the state capital of Stuttgart, and Germany's 2 ...

, Germany.

Work

Brunner is remembered for his experiments and studies of the

and the internal secretions associated with that organ. In 1683 he removed the pancreas from a dog and noticed that the animal experienced extreme thirst and

polyuria Polyuria () is excessive or an abnormally large production or passage of urine (greater than 2.5 L or 3 L over 24 hours in adults). Increased production and passage of urine may also be termed diuresis. Polyuria often appears in conjunction with ...

. Despite his intuitive grasp of the connection between the pancreas and

diabetes Diabetes, also known as diabetes mellitus, is a group of metabolic disorders characterized by a high blood sugar level ( hyperglycemia) over a prolonged period of time. Symptoms often include frequent urination, increased thirst and increased ap ...

, he was unable to provide a theoretical link for the role of the pancreas in that disease. He published his findings on pancreatic research in a treatise titled ''Experimenta Nova circa Pancreas. Accedit diatribe de lympha & genuino pancreatis usu''. in 1687 he described tubuloalveolar glands in the submucous layer of the

, which were later named

Brunner's glands Brunner's glands (or duodenal glands) are compound tubular submucosal glands found in that portion of the duodenum which is above the hepatopancreatic sphincter (i.e sphincter of Oddi). It also contains submucosa which creates special glands. ...

. Two disorders associated with these glands are: * "Brunner's gland

hyperplasia Hyperplasia (from ancient Greek ὑπέρ ''huper'' 'over' + πλάσις ''plasis'' 'formation'), or hypergenesis, is an enlargement of an organ or tissue caused by an increase in the amount of organic tissue that results from cell proliferati ...

": Hypertrophy of Brunner's glands in the submucosal layer of the duodenum. * "Brunner's gland

adenoma An adenoma is a benign tumor of epithelial tissue with glandular origin, glandular characteristics, or both. Adenomas can grow from many glandular organs, including the adrenal glands, pituitary gland, thyroid, prostate, and others. Some adenom ...

": Polyp-like tumours arising from Brunner's glands.

Written works

* ''Poetum monstrosum et bicipitem'', Diss. med.

Strassburg Strasbourg (, , ; german: Straßburg ; gsw, label=Bas Rhin Alsatian, Strossburi , gsw, label=Haut Rhin Alsatian, Strossburig ) is the prefecture and largest city of the Grand Est region of eastern France and the official seat of the Eur ...

1672 * ''De glandulis in duodeno intestino detectis'',

Heidelberg Heidelberg (; Palatine German language, Palatine German: ''Heidlberg'') is a city in the States of Germany, German state of Baden-Württemberg, situated on the river Neckar in south-west Germany. As of the 2016 census, its population was 159,914 ...

1687 * ''Experimenta nova circa pancreas; accedit diatriba de lympha et genuina pancreatis usu'', Amsterdam 1682, nov ed.:

Leyden Leiden (; in English and archaic Dutch also Leyden) is a city and municipality in the province of South Holland, Netherlands. The municipality of Leiden has a population of 119,713, but the city forms one densely connected agglomeration wit ...

1722

Notes

References

Description of ''Experimenta Nova circa Pancreas''

Diabetes, Doctors and Dogs
* ''List of publications copied from the German Wikipedia.'' {{DEFAULTSORT:Brunner, Johann Conrad 1653 births 1727 deaths People from Frauenfeld District 17th-century Swiss physicians 18th-century Swiss physicians Swiss anatomists Academic staff of Heidelberg University University of Strasbourg alumni