Keratinocyte intercellular matrix and sebaceous gland follicular structures

The keratinocyte intercellular matrix and sebaceous gland follicular structures represent complex histological components of the human integumentary system rather than a single molecular target (StatPearls, 2023). This specific terminology is often used in dermatological pharmacology, particularly in the documentation for drugs like luliconazole, to describe the site of drug distribution and accumulation (PMDA, 2010). The keratinocyte intercellular matrix is the lipid-rich extracellular space between epidermal cells that serves as the primary barrier to water loss and pathogen entry (NIH, 2022). Sebaceous gland follicular structures, which include the hair follicle and its associated oil-producing gland, are involved in sebum production and skin lubrication (Journal of Clinical and Aesthetic Dermatology, 2010). In a pharmacological context, these structures are cited as the primary sites for the accumulation and penetration of topical therapeutic agents, such as antifungals and retinoids (DrugBank, 2024). Because this "target" encompasses multiple cell types and extracellular components, it does not have a single molecular classification. Instead, therapeutic effects are mediated by specific proteins located within these structures, such as fungal enzymes or human nuclear receptors. This site is critical for the pharmacokinetics of dermatological drugs, acting as a reservoir that ensures prolonged drug exposure at the site of action (PubMed, 2015).

Other names

Pilosebaceous unitEpidermal intercellular spaceSkin reservoirTarget site of luliconazole

Acts as a histological reservoir for the accumulation and sustained release of lipophilic topical medications (PubMed, 2015).