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Édouard Laguesse
Gustave-Édouard Laguesse (23 April 1861 – 6 November 1927) was a French pathologist and histologist born in Dijon. In 1885 he received his medical doctorate in Paris and from 1891 performed scientific research in Lille. In 1896 he became a professor of histology. Laguesse is remembered for his histopathological work involving the pancreas. In 1893 he named the small cellular clusters of the pancreas the "Islets of Langerhans", in honor of their discoverer Paul Langerhans (1847-1888). At the time of its discovery, Langerhans provided an excellent description of the structures, but offered no further conclusions as to their function. @ NDB/ADB Deutsche Biographie Laguesse postulated that the Islets of Langerhans produced secretions that played a regulatory role in |
Professeur Laguesse CIPH0239
A teacher, also called a schoolteacher or formally an educator, is a person who helps students to acquire knowledge, competence, or virtue, via the practice of teaching. ''Informally'' the role of teacher may be taken on by anyone (e.g. when showing a colleague how to perform a specific task). In some countries, teaching young people of school age may be carried out in an informal setting, such as within the family (homeschooling), rather than in a formal setting such as a school or college. Some other professions may involve a significant amount of teaching (e.g. youth worker, pastor). In most countries, ''formal'' teaching of students is usually carried out by paid professional teachers. This article focuses on those who are ''employed'', as their main role, to teach others in a ''formal'' education context, such as at a school or other place of ''initial'' formal education or training. Duties and functions A teacher's role may vary among cultures. Teachers may provi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Langerhans
Paul Langerhans (25 July 1847 – 20 July 1888) was a German pathologist, physiologist and biologist, credited with the discovery of the cells that secrete insulin, named after him as the islets of Langerhans. Eponymous terms * Islets of Langerhans – Pancreatic cells which include insulin-producing cells. Langerhans discovered these cells during his studies for his doctorate at the Berlin Pathological Institute in 1869. * Langerhans cells – Skin cells concerned with the immune response and which sometimes contain Langerhans granules. In 1868, Langerhans used the technique taught to him by Julius Friedrich Cohnheim to stain a sample of human skin with gold chloride and identified the cells which bear his name. From their appearance, Langerhans believed they were nerve cells. However they are a form of macrophages that were originally thought to be dendritic cells due to their morphology. * Layer of Langerhans – In the same paper in which he described Langerhans cells, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1927 Deaths
Events January * January 1 – The British Broadcasting ''Company'' becomes the BBC, British Broadcasting ''Corporation'', when its Royal Charter of incorporation takes effect. John Reith, 1st Baron Reith, John Reith becomes the first Director-General. * January 7 ** The first transatlantic telephone call is made ''via radio'' from New York City, United States, to London, United Kingdom. ** The Harlem Globetrotters exhibition basketball team play their first ever road game in Hinckley, Illinois. * January 9 – The Laurier Palace Theatre fire at a movie theatre in Montreal, Quebec, Canada, kills 78 children. * January 10 – Fritz Lang's futuristic film ''Metropolis (1927 film), Metropolis'' is released in Germany. * January 11 – Louis B. Mayer, head of film studio Metro-Goldwyn-Mayer (MGM), announces the creation of the Academy of Motion Picture Arts and Sciences, at a banquet in Los Angeles, California. * January 24 – U.S. Marines United States occ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1861 Births
This year saw significant progress in the Unification of Italy, the outbreak of the American Civil War, and the Emancipation reform of 1861, emancipation reform abolishing serfdom in the Russian Empire. Events January * January 1 ** Benito Juárez captures Mexico City. ** The first steam-powered carousel is recorded, in Bolton, England. * January 2 – Frederick William IV of Prussia, Friedrich Wilhelm IV of Prussia dies, and is succeeded by Wilhelm I of Germany, Wilhelm I. American Civil War: ** January 3 – Delaware votes not to secede from the United States, Union. ** January 9 – Mississippi in the American Civil War, Mississippi becomes the second state to secede from the Union. ** January 10 – Florida in the American Civil War, Florida secedes from the Union. ** January 11 – Alabama in the American Civil War, Alabama secedes from the Union. ** January 12 – Major Robert Anderson (Union officer), Robert Anderson sends dispatches to Was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Pathologists
French may refer to: * Something of, from, or related to France ** French language, which originated in France ** French people, a nation and ethnic group ** French cuisine, cooking traditions and practices Arts and media * The French (band), a British rock band * "French" (episode), a live-action episode of ''The Super Mario Bros. Super Show!'' * ''Française'' (film), a 2008 film * French Stewart (born 1964), American actor Other uses * French (surname), a surname (including a list of people with the name) * French (tunic), a type of military jacket or tunic * French's, an American brand of mustard condiment * French (catheter scale), a unit of measurement * French Defence, a chess opening * French kiss, a type of kiss See also * France (other) * Franch, a surname * French Revolution (other) * French River (other), several rivers and other places * Frenching (other) Frenching may refer to: * Frenching (automobile), recessing or mou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endocrinology
Endocrinology (from ''endocrine system, endocrine'' + ''wikt:-logy#Suffix, -ology'') is a branch of biology and medicine dealing with the endocrine system, its diseases, and its specific secretions known as hormones. It is also concerned with the integration of developmental events proliferation, growth, and differentiation, and the psychological or behavioral activities of metabolism, human development (biology), growth and development, tissue (biology), tissue function, sleep, digestion, Respiration (physiology), respiration, excretion, mood (psychology), mood, Stress (physiology), stress, lactation, Motor coordination, movement, reproduction, and sensory perception caused by hormones. Specializations include behavioral endocrinology and comparative endocrinology. The endocrine system consists of several glands, all in different parts of the body, that secrete hormones directly into the blood rather than into a Duct (anatomy), duct system. Therefore, endocrine glands are regarde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hormone
A hormone (from the Ancient Greek, Greek participle , "setting in motion") is a class of cell signaling, signaling molecules in multicellular organisms that are sent to distant organs or tissues by complex biological processes to regulate physiology and behavior. Hormones are required for the normal development of animals, plants and fungi. Due to the broad definition of a hormone (as a signaling molecule that exerts its effects far from its site of production), numerous kinds of molecules can be classified as hormones. Among the substances that can be considered hormones, are eicosanoids (e.g. prostaglandins and thromboxanes), steroids (e.g. Estrogen, oestrogen and brassinosteroid), amino acid derivatives (e.g. epinephrine and auxin), protein or peptides (e.g. insulin and CLE peptides), and gases (e.g. ethylene and nitric oxide). Hormones are used to communicate between organ (anatomy), organs and Tissue (biology), tissues. In vertebrates, hormones are responsible for regulating ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digestion
Digestion is the breakdown of large insoluble food compounds into small water-soluble components so that they can be absorbed into the blood plasma. In certain organisms, these smaller substances are absorbed through the small intestine into the blood stream. Digestion is a form of catabolism that is often divided into two processes based on how food is broken down: mechanical and chemical digestion. The term mechanical digestion refers to the physical breakdown of large pieces of food into smaller pieces which can subsequently be accessed by digestive enzymes. Mechanical digestion takes place in the mouth through Chewing, mastication and in the small intestine through segmentation contractions. In chemical digestion, enzymes break down food into the small compounds that the body can use. In the human digestive system, food enters the mouth and mechanical digestion of the food starts by the action of mastication (chewing), a form of mechanical digestion, and the wetting contact ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Islets Of Langerhans
The pancreatic islets or islets of Langerhans are the regions of the pancreas that contain its endocrine (hormone-producing) cells, discovered in 1869 by German pathological anatomist Paul Langerhans. The pancreatic islets constitute 1–2% of the pancreas volume and receive 10–15% of its blood flow. The pancreatic islets are arranged in density routes throughout the human pancreas, and are important in the metabolism of glucose. Structure There are about 1 million islets distributed throughout the pancreas of a healthy adult human. While islets vary in size, the average diameter is about 0.2 mm.:928 Each islet is separated from the surrounding pancreatic tissue by a thin, fibrous, connective tissue capsule which is continuous with the fibrous connective tissue that is interwoven throughout the rest of the pancreas.:928 Microanatomy Hormones produced in the pancreatic islets are secreted directly into the blood flow by (at least) five types of cells. In rat islets, e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pathologist
Pathology is the study of disease. The word ''pathology'' also refers to the study of disease in general, incorporating a wide range of biology research fields and medical practices. However, when used in the context of modern medical treatment, the term is often used in a narrower fashion to refer to processes and tests that fall within the contemporary medical field of "general pathology", an area that includes a number of distinct but inter-related medical specialties that diagnose disease, mostly through analysis of tissue and human cell samples. Idiomatically, "a pathology" may also refer to the predicted or actual progression of particular diseases (as in the statement "the many different forms of cancer have diverse pathologies", in which case a more proper choice of word would be " pathophysiologies"). The suffix ''pathy'' is sometimes used to indicate a state of disease in cases of both physical ailment (as in cardiomyopathy) and psychological conditions (such as ps ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pancreas
The pancreas (plural pancreases, or pancreata) is an Organ (anatomy), organ of the Digestion, digestive system and endocrine system of vertebrates. In humans, it is located in the abdominal cavity, abdomen behind the stomach and functions as a gland. The pancreas is a mixed or heterocrine gland, i.e., it has both an endocrine and a digestive exocrine function. Ninety-nine percent of the pancreas is exocrine and 1% is endocrine. As an endocrine gland, it functions mostly to regulate blood sugar levels, secreting the hormones insulin, glucagon, somatostatin and pancreatic polypeptide. As a part of the digestive system, it functions as an exocrine gland secreting pancreatic juice into the duodenum through the pancreatic duct. This juice contains bicarbonate, which neutralizes acid entering the duodenum from the stomach; and digestive enzymes, which break down carbohydrates, proteins and lipids, fats in food entering the duodenum from the stomach. Inflammation of the pancreas is kno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Histopathological
Histopathology (compound of three Greek language, Greek words: 'tissue', 'suffering', and ''-logy, -logia'' 'study of') is the light microscope, microscopic examination of Tissue (biology), tissue in order to study the manifestations of disease. Specifically, in clinical medicine, histopathology refers to the examination of a biopsy or surgical Laboratory specimen, specimen by a pathology, pathologist, after the specimen has been processed and histological sections have been placed onto glass slides. In contrast, cytopathology examines free cells or tissue micro-fragments (as "cell blocks "). Collection of tissues Histopathological examination of tissues starts with surgery, biopsy, or autopsy. The tissue is removed from the Human body, body or plant, and then, often following expert dissection in the fresh state, placed in a fixation (histology), fixative which stabilizes the tissues to prevent Decomposition, decay. The most common fixative is 10% neutral buffered formali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
