Oral mucosal epithelium

The oral mucosal epithelium is the stratified squamous epithelium that lines the oral cavity, acting as a vital barrier between the underlying tissues and the external environment [1]. It provides protection against mechanical forces, microbial invasion, and chemical toxins while facilitating sensation and minor secretory functions [2]. This tissue is clinically significant as the site of origin for oral squamous cell carcinoma and is frequently affected by treatment-induced toxicities such as oral mucositis [3]. While not a single molecular target, it contains various receptors and enzymes that are targeted by drugs like palifermin (a keratinocyte growth factor) to promote healing or topical anesthetics like lidocaine to manage pain [1, 4]. Its high turnover rate and permeability characteristics make it a key focus for both local and systemic drug delivery strategies [5]. References: [1] StatPearls, Anatomy, Head and Neck, Oral Mucosa; [2] NIH National Cancer Institute, Oral Mucosa; [3] Journal of Clinical Oncology, Management of Oral Mucositis; [4] PubChem, Palifermin; [5] Advanced Drug Delivery Reviews, Oral Mucosal Drug Delivery.

Other names

Oral mucosaMouth liningStratified squamous epithelium of the oral cavity

Drugs interacting with the oral mucosal epithelium typically act by modulating inflammatory pathways, providing local anesthesia by blocking sodium channels in nerve endings within the tissue, or promoting epithelial cell proliferation and differentiation via growth factor signaling [1, 4].