A brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It is located in the head, usually close to the sensory organs for senses such as vision. It is the most complex organ in a vertebrate's body. In a human, the cerebral cortex contains approximately 14–16 billion neurons, and the estimated number of neurons in the cerebellum is 55–70 billion. Each neuron is connected by synapses to several thousand other neurons. These neurons typically communicate with one another by means of long fibers called axons, which carry trains of signal pulses called action potentials to distant parts of the brain or body targeting specific recipient cells.
The enteric nervous system (ENS) or intrinsic nervous system is one of the main divisions of the autonomic nervous system (ANS) and consists of a mesh-like system of neurons that governs the function of the gastrointestinal tract. It is capable of acting independently of the sympathetic and parasympathetic nervous systems, although it may be influenced by them. The ENS is nicknamed the "second brain". It is derived from neural crest cells.
Neuroanatomy is the study of the structure and organization of the nervous system. In contrast to animals with radial symmetry, whose nervous system consists of a distributed network of cells, animals with bilateral symmetry have segregated, defined nervous systems. Their neuroanatomy is therefore better understood. In vertebrates, the nervous system is segregated into the internal structure of the brain and spinal cord and the routes of the nerves that connect to the rest of the body. The delineation of distinct structures and regions of the nervous system has been critical in investigating how it works. For example, much of what neuroscientists have learned comes from observing how damage or "lesions" to specific brain areas affects behavior or other neural functions.
Neuropeptides are chemical messengers made up of small chains of amino acids that are synthesized and released by neurons. Neuropeptides typically bind to G protein-coupled receptors (GPCRs) to modulate neural activity and other tissues like the gut, muscles, and heart.
Enterochromaffin (EC) cells are a type of enteroendocrine cell, and neuroendocrine cell. They reside alongside the epithelium lining the lumen of the digestive tract and play a crucial role in gastrointestinal regulation, particularly intestinal motility and secretion. They were discovered by Nikolai Kulchitsky.
Dame Kay Elizabeth Davies is a British geneticist. She is Dr Lee's Professor of Anatomy at the University of Oxford and a Fellow of Hertford College, Oxford. She is director of the Medical Research Council (MRC) functional genetics unit, a governor of the Wellcome Trust, a director of the Oxford Centre for Gene Function, and a patron and Senior Member of Oxford University Scientific Society. Her research group has an international reputation for work on Duchenne muscular dystrophy (DMD). In the 1980s, she developed a test which allowed for the screening of foetuses whose mothers have a high risk of carrying DMD.
Andrea Hilary Brand is the Herchel Smith Professor of Molecular Biology and a Fellow of Jesus College, Cambridge. She heads a lab investigating nervous system development at the Gurdon Institute and the Department of Physiology, Development and Neuroscience. She developed the GAL4/UAS system with Norbert Perrimon which has been described as “a fly geneticist's Swiss army knife”.
Martin Bobrow is a British geneticist, and Emeritus Fellow, Wolfson College, Cambridge.
Philip William Ingham FRS, FMedSci, Hon. FRCP is a British geneticist, currently the Toh Kian Chui Distinguished Professor at the Lee Kong Chian School of Medicine, a partnership between Nanyang Technological University, Singapore and Imperial College, London. Previously, he was the inaugural Director of the Living Systems Institute at the University of Exeter, UK and prior to that was Vice Dean, Research at the Lee Kong Chian School of Medicine.
Michael Morris Rosbash is an American geneticist and chronobiologist. Rosbash is a professor and researcher at Brandeis University and investigator at the Howard Hughes Medical Institute. Rosbash's research group cloned the Drosophila period gene in 1984 and proposed the Transcription Translation Negative Feedback Loop for circadian clocks in 1990. In 1998, they discovered the cycle gene, clock gene, and cryptochrome photoreceptor in Drosophila through the use of forward genetics, by first identifying the phenotype of a mutant and then determining the genetics behind the mutation. Rosbash was elected to the National Academy of Sciences in 2003. Along with Michael W. Young and Jeffrey C. Hall, he was awarded the 2017 Nobel Prize in Physiology or Medicine "for their discoveries of molecular mechanisms controlling the circadian rhythm".
The gut–brain axis is the two-way biochemical signaling that takes place between the gastrointestinal tract and the central nervous system (CNS). The term "gut–brain axis" is occasionally used to refer to the role of the gut microbiota in the interplay as well. The "microbiota–gut–brainaxis" explicitly includes the role of gut microbiota in the biochemical signaling events that take place between the GI tract and the CNS. Broadly defined, the gut–brain axis includes the central nervous system, neuroendocrine system, neuroimmune systems, the hypothalamic–pituitary–adrenal axis, sympathetic and parasympathetic arms of the autonomic nervous system, the enteric nervous system, vagus nerve, and the gut microbiota.
Gaiti Hasan is an Indian scientist who researches in the fields of molecular biology, genetics, neuroscience and cell signalling. Hasan is a Fellow of the Indian National Science Academy (INSA), the apex body of Indian scientists and technologists. 2013 onwards she has been serving as a Senior Professor at the National Centre for Biological Sciences (NCBS), Bangalore.
The microbiota describes the sum of all symbiotic microorganisms living on or in an organism. The fruit fly Drosophila melanogaster is a model organism and known as one of the most investigated organisms worldwide. The microbiota in flies is less complex than that found in humans. It still has an influence on the fitness of the fly, and it affects different life-history characteristics such as lifespan, resistance against pathogens (immunity) and metabolic processes (digestion). Considering the comprehensive toolkit available for research in Drosophila, analysis of its microbiome could enhance our understanding of similar processes in other types of host-microbiota interactions, including those involving humans. Microbiota plays key roles in the intestinal immune and metabolic responses via their fermentation product, acetate.
The Medical Research Council (MRC) London Institute of Medical Sciences (LMS) is a biomedical research institute based in West London, UK. Research at the institute focuses on the understanding of the molecular and physiological basis of health and disease. The LMS was established in 1994 and receives core funding from the Medical Research Council like the Laboratory of Molecular Biology at Cambridge University. The institute is hosted by Imperial College London at the Hammersmith Hospital., and is part of the Institute of Clinical Sciences (ICS), a department in the Imperial College London, Faculty of Medicine. It has been led by Amanda Fisher since 2008.
Elizabeth Mary Claire Fisher is a British geneticist and Professor at University College London. Her research investigates the degeneration of motor neurons during amyotrophic lateral sclerosis and Alzheimer's disease triggered by Down syndrome.
Nilay Yapici is a Turkish neuroscientist at Cornell University in Ithaca, New York, where she is the Nancy and Peter Meinig Family Investigator in the Life Sciences and Adelson Sesquicentennial Fellow in the Department of Neurobiology and Behavior. Yapici studies the neural circuits underlying decision making and feeding behavior in fruit fly models.
The Suffrage Science award is a prize for women in science, engineering and computing founded in 2011, on the 100th anniversary of International Women's Day by the MRC London Institute of Medical Sciences (LMS). There are three categories of award:
- life sciences
- engineering and physical sciences
- mathematics and computing.
Holly Ann Ingraham is an American physiologist who is the Herzstein Professor of Molecular Physiology at the University of California, San Francisco. She studies women's health, in particular, sex-dependent central regulation of female metabolism and physiology. She was Elected to the American Association for the Advancement of Science in 2012, the American Academy of Arts and Sciences in 2019, and the National Academy of Sciences in 2021.
Corinne Houart is a Belgian biomedical scientist who is Professor of Developmental Biology at King's College London. She also serves as editor of the Centre for Developmental Neurobiology. She was elected to the European Molecular Biology Organization in 2021.
Minnie Mariam Mathan is a pathologist, a pioneer in India in gastrointestinal ultrastructure research and medical administrator. She pioneered studies in the pathogenesis of intestinal lesions in tropical sprue and of the rotavirus as an important cause of acute diarrhea in Indian children.
