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Ocular Surface Mucous Membrane (OSMM)
- Target
- OSMM
- Molecular classification
- Mucin, Glycoprotein
01
Overview
The ocular surface mucous membrane is a complex layer composed primarily of mucins, including secreted gel-forming mucins (e.g., MUC5AC) produced by conjunctival goblet cells and membrane-associated mucins (e.g., MUC1, MUC4, MUC16) anchored to epithelial cell surfaces. This membrane plays a critical role in maintaining ocular surface health by providing hydration, lubrication, barrier protection, and clearance of debris and pathogens. Alterations in the quantity or quality of this membrane are implicated in diseases such as dry eye syndrome.
- Other names
- Conjunctival Mucous MembraneCorneal Epithelium Mucous LayerOcular MucusTear Film Mucus Layer
02
Mechanism of action
P2Y₂ receptor agonist (stimulates mucus secretion)
03
Biological functions
HydrationLubricationBarrier ProtectionClearance of Debris/PathogensCell SignalingReceptor Activity
04
Disease associations
Dry Eye SyndromeOcular InfectionOcular Surface InjuryAllergic Conjunctivitis
05
Safety considerations
Potential for altered tear film compositionRisk of mucus plugging with overstimulation
06
Interacting drugs
Diquafosol
07
Biomarkers
MUC5AC levelsGoblet cell density
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