Oxidized cellulose surface (local hemostasis mechanism)

Oxidized cellulose-based materials (notably oxidized regenerated cellulose, ORC) are biodegradable, biocompatible hemostatic agents used in surgical and trauma settings to rapidly stop bleeding through physical and chemical surface-mediated mechanisms. ORC’s hemostatic effect is attributed to its acidic carboxyl groups, which lower local pH, promote vasoconstriction, and interact with blood proteins (including Fe³⁺ in hemoglobin) to form a gelatinous seal at bleeding sites. This facilitates rapid platelet adhesion, activation, aggregation, and direct formation of a physical matrix for clot development. Besides rapid hemostasis, ORC provides a temporary barrier to bacterial invasion and may reduce surgical adhesions[1][2][4][5][8][9]. The product is absorbed over several weeks. It is not a cellular or molecular drug target but a material agent whose effect is due to local surface chemistry and physics.

Other names

oxidized regenerated cellulose (ORC)Surgicel (trade name)oxidized cellulose dressingORC hemostatic agent

Physical-chemical surface effect: immediate clot formation by surface interaction with blood components, local acidification, ionic interactions (Ca²⁺/Na⁺), formation of a physical matrix for clot development and sealing of vessels, bacteriostatic and absorption effects