Cellular and microbial macromolecules (None)

Cellular and microbial macromolecules in skin and bacteria refers to the collective set of essential biological components—including proteins, lipids, and nucleic acids—that serve as the non-specific targets for broad-spectrum topical antiseptics. Unlike targeted antimicrobial agents that inhibit specific enzymes, these macromolecules are disrupted through rapid, non-selective chemical reactions such as oxidation, halogenation, or denaturation. This mechanism is most prominently associated with iodine-based agents like povidone-iodine, where free iodine reacts with functional groups such as sulfhydryl, hydroxyl, and amino groups across a wide range of microbial and host molecules. This broad-spectrum activity effectively neutralizes bacteria, viruses, fungi, and protozoa, making it a cornerstone of wound care and surgical site preparation. However, because the action is non-selective, it can also affect host cellular macromolecules in the skin, potentially leading to localized tissue damage, irritation, or delayed wound healing if used in high concentrations or for prolonged periods.

Other names

Microbial macromoleculesBacterial macromoleculesHost and microbial proteinsCellular proteins and lipidsMicrobial proteins, nucleotides, and fatty acids

Non-specific oxidation, halogenation, and denaturation of proteins, lipids, and nucleic acids, leading to rapid cell death and lysis.