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Building a brain in the gut: development of the enteric nervous system Goldstein AM; Hofstra RM; Burns AJClin Genet 2013[Apr]; 83 (4): 307-16The enteric nervous system (ENS), the intrinsic innervation of the gastrointestinal tract, is an essential component of the gut neuromusculature and controls many aspects of gut function, including coordinated muscular peristalsis. The ENS is entirely derived from neural crest cells (NCC) which undergo a number of key processes, including extensive migration into and along the gut, proliferation, and differentiation into enteric neurons and glia, during embryogenesis and fetal life. These mechanisms are under the molecular control of numerous signaling pathways, transcription factors, neurotrophic factors and extracellular matrix components. Failure in these processes and consequent abnormal ENS development can result in so-called enteric neuropathies, arguably the best characterized of which is the congenital disorder Hirschsprung disease (HSCR), or aganglionic megacolon. This review focuses on the molecular and genetic factors regulating ENS development from NCC, the clinical genetics of HSCR and its associated syndromes, and recent advances aimed at improving our understanding and treatment of enteric neuropathies.|Animals[MESH]|Brain/physiology[MESH]|Enteric Nervous System/growth & development/metabolism/*physiology[MESH]|Gastrointestinal Tract/growth & development/*innervation/metabolism[MESH]|Humans[MESH]|Neurons/*physiology[MESH]|Signal Transduction/physiology[MESH] |
