Tissue proteins on inflamed or necrotic mucosa

Tissue proteins on inflamed or necrotic mucosa refers to the various proteins, including albumin, fibrinogen, and globulins, that become accessible to pharmacological agents when the epithelial lining of a mucous membrane is damaged (StatPearls, 2023). In the context of the gastrointestinal tract, these proteins are exposed during the formation of ulcers or areas of necrosis. These proteins act as a site of action for cytoprotective drugs like sucralfate, which is a complex of aluminum hydroxide and sulfated sucrose (PubChem, CID 6398). In an acidic environment, sucralfate polyanions bind to the positively charged proteins in the damaged tissue, forming a protective, paste-like barrier (NIH, LiverTox, 2017). This barrier prevents further erosion by gastric acid, pepsin, and bile salts, facilitating the natural healing process of the mucosa. This target is distinct from specific receptors as it involves non-specific electrostatic binding to a variety of proteins present in the inflammatory exudate (Goodman & Gilman's, 13th Ed). Other agents, such as bismuth compounds, also interact with these proteins to provide a protective coating over ulcerated areas. The therapeutic utility of this target is primarily focused on local protection rather than systemic signaling modulation.

Other names

Exposed mucosal proteinsNecrotic tissue proteinsUlcer base proteinsInflammatory exudate proteins

Formation of a physical protective barrier through the electrostatic binding of polyanionic compounds to positively charged proteins exposed in damaged or necrotic tissue.