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Role of spasmolytic polypeptide-expressing metaplasia in gastric mucosal diseases. 2023

Xi Liu, and Zhiyuan Ma, and Zilin Deng, and Zhiqiang Yi, and Biguang Tuo, and Taolang Li, and Xuemei Liu
Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University Zunyi, Guizhou, China.

Spasmolytic polypeptide-expressing metaplasia (SPEM) is a trefoil factor 2-expressing metaplasia in the fundic glands that resembles the fundic metaplasia of deep antral glandular cells and arises mainly from transdifferentiation of mature chief cells as well as mucous neck cells or isthmic stem cells. SPEM participates in the regulation of gastric mucosal injury, including focal and diffuse injury. This review focuses on the origin, models, and regulatory mechanisms of SPEM and on its role in the development of gastric mucosal injury. We hope to provide new prospects for the prevention and treatment of gastric mucosal diseases from the perspective of cell differentiation and transformation.

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