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篇名
Mucus Secretion and Calcium Mobilization in Airway Submucosal Gland Cell
並列篇名
Mucus Secretion and Calcium Mobilization in Airway Submucosal Gland Cell
作者 Silu LuLu-Tai TienYu-Ching TuYi PangLir-Wan Fan
英文摘要 Airway mucus secretion from submucosal gland cells (SMGC) plays an important role in protecting the respiratory system from pathogens and particles. However, mucus hypersecre- tion is a common pathophysiological characteristic of many chronic inflammatory pulmonary diseases such as chronic obstructive pulmonary disease (COPD), cystic fibrosis, and asthma that can lead to airway obstruction and impaired gas exchange, and if serious enough even plug the airways, possibly leading to death. Both hyperplasias of submucusosal glands and increased sensitivity of SMGC to various secretagogues such as neurotransmitters and hor- mones play roles in mucus hypersecretion. Acute increases in mucus release are the result of sensitization of SMGC. Therefore, understanding the mechanisms of mucus secretion and its sensitization will provide potential targets for therapies that would be beneficial in the treat- ment of chronic inflammatory lung diseases. The submucosal gland is comprised of serous cell and mucous cell ascini. Serous cells secrete water, electrolytes and some mucin, while mucous cells secrete mainly mucin but also some fluid. Mucin, a highly glycosylated protein, is the main macromolecular component of airway-secreted mucus. It forms high molecu- lar weight chains that are packaged within SMGC in vesicles that are released by exocytosis upon activation of the SMGC by a stimulus. An increase in intracellular Ca2+ is required for ion movement and evoked mucin release stimulated by secretagogues such as acetylcholine (Ach), histamine, or ATP. In SMGC, membrane receptor activation induces Ca2+ release from internal stores and subsequent Ca2+ influx through store-operated Ca2+ channels (SOC) or re- ceptor-operated channels (ROC).
起訖頁 045-058
關鍵詞 Submucosal gland cellmucuscalciumSubmucosal gland cellmucuscalcium
刊名 輔仁醫學期刊
出版單位 輔仁大學醫學院
期數 201703 (15:1期)
DOI 10.3966/181020932017031501007  複製DOI  DOI申請
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