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The activated stellate cell is characterized by proliferation, contractility, and chemotaxis. This change is seen as a transdifferentiation whereby the cells lose their stellate shape and acquire that of myofibroblasts. [8] [6] This state of the stellate cell is the main source of extracellular matrix production in liver injury. [9]
Stellate cells are neurons in the central nervous system, named for their star-like shape formed by dendritic processes radiating from the cell body. These cells play significant roles in various brain functions, including inhibition in the cerebellum and excitation in the cortex, and are involved in synaptic plasticity and neurovascular coupling.
Kupffer cells, also known as stellate macrophages and Kupffer–Browicz cells, are specialized cells localized in the liver within the lumen of the liver sinusoids and are adhesive to their endothelial cells which make up the blood vessel walls. Kupffer cells comprise the largest population of tissue-resident macrophages in the body.
Partial smooth muscle differentiation of a fibroblastic cell; Activation of a stellate cell (e.g. hepatic Ito cells or pancreatic stellate cells). Loss of contractile phenotype (or acquisition of "synthetic phenotype") of a smooth muscle cell. Direct myofibroblastic differentiation of a progenitor cell resident in a stromal tissue.
Pancreatic acinar cell; Centroacinar cell; Pancreatic stellate cell; Islets of Langerhans. Alpha cell; Beta cell; PP cell (F cell, gamma cell) Delta cell; Epsilon cell;
Pancreatic stellate cells (PaSCs) are classified as myofibroblast-like cells that are located in exocrine regions of the pancreas. [ 1 ] [ 2 ] PaSCs are mediated by paracrine and autocrine stimuli and share similarities with the hepatic stellate cell . [ 2 ]
Liver cytology is the branch of cytology that studies the liver cells and its functions. The liver is a vital organ, in charge of almost all the body’s metabolism. Main liver cells are hepatocytes, Kupffer cells, and hepatic stellate cells; each one with a specific function.
Rinehart and Farquhar first discovered FS cells through electron microscopy of the anterior pituitary gland. Vila-Porcile named these non-endocrine cells "folliculo-stellate" cells in 1972 due to their stellate (star) shape, and their location lining the lumen of small follicules in the anterior pituitary. [1]