Tag: Endoderm

  • Parafollicular cells aka C cells secrete calcitonin and several neuroendocrine peptides

    Parafollicular cells, also called C cells, are neuroendocrine cells in the thyroid. The primary function of these cells is to secrete calcitonin. They are located adjacent to the thyroid follicles and reside in the connective tissue. These cells are large and have a pale stain compared with the follicular cells. In teleost and avian species these cells occupy a structure outside the thyroid…

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  • Enterochromaffin (EC) cells aka Kulchitsky cells

    Enterochromaffin (EC) cells (also known as Kulchitsky 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. EC cells modulate neuron signalling in the enteric nervous system (ENS) via the secretion of the neurotransmitter serotonin and other peptides.…

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  • Cadherin-1

    Cadherin-1 or Epithelial cadherin(E-cadherin), (not to be confused with the APC/C activator protein CDH1) is a protein that in humans is encoded by the CDH1gene.[5] Mutations are correlated with gastric, breast, colorectal, thyroid, and ovarian cancers. CDH1 has also been designated as CD324 (cluster of differentiation 324). It is a tumor suppressor gene.[6][7] History The discovery of cadherin cell-cell adhesion proteins is attributed to Masatoshi Takeichi, whose experience…

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  • Calcitonin

    Calcitonin

    Calcitonin is a 32 amino acid peptide hormone secreted by PARAFOLLICULAR CELLS (also known as C cells) of the thyroid (or endostyle) in humans and other chordates in the ultimopharyngeal body. It acts to reduce blood calcium (Ca2+), opposing the effects of PARATHYROID HORMONE (PTH). Its importance in humans has not been as well established as its importance in other animals, as its function is usually not significant in the…

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