Mucosal Adhesion Enhancement
Mucosal Adhesion Enhancement - Related Videos
08:25
Heterotopic Mucosal Engrafting Procedure for Direct Drug Delivery to the Brain in Mice
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Cited by 5 •
2014
A mouse model of human endoscopic skull base reconstruction has been developed that creates a semipermeable interface between the brain and nose using nasal mucosal grafts. This method allows researchers to study delivery to the central nervous system of high molecular weight therapeutics which are otherwise excluded by the blood-brain barrier when administered systemically.
01:14
Adhesion
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2019
Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules. Capillary action is a result of water’s adhesive tendencies. When a narrow glass...
02:55
Quantification of Immune Mediator Levels in Human Mucosal Lining Fluid
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2025
This video demonstrates the quantification of immune mediator levels in neonatal human nasal mucosal lining fluid extract. An electrochemiluminescence-based multiplex assay system measures these mediators by evaluating the intensity of emitted light when they are excited.
01:25
Mucosal Barrier of the Stomach
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2024
The gastric glands contain parietal cells that secrete hydrochloric acid (HCl) for digestion. The cells secrete HCl because it is highly corrosive and essential for breaking down food. To achieve this, they secrete hydrogen and chloride ions into the lumen of the gastric glands, which combine to form HCl. Within parietal cells, carbonic acid is first formed through the reaction of water and carbon dioxide. The dissociation of carbonic acid releases bicarbonate and hydrogen ions. The bicarbonate...
03:25
Cytoskeleton and Focal Adhesion Organization Assay: An Immunofluorescence-based Method to Study Cell Adhesion and Spreading on Substrates
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2023
This video describes the technique of studying the cytoskeleton and focal adhesions in primary human colon cancer cells to understand its variations depending on substrate rigidity. This culture of cancer cells on soft and hard substrates allows various downstream biophysical measurements for cancer prognosis.
FAQs
Mucoadhesive polymers can interact with mucins through several complementary mechanisms, including hydrogen bonding, electrostatic attraction, chain interpenetration, and hydration. These interactions increase contact between the formulation and the mucus layer, helping the material resist removal as mucus moves. The dominant contribution depends on the material properties and the local characteristics of the mucosal environment.
Hydration, mucus composition, and physiological movement strongly influence adhesion performance. Hydration can support interactions at the formulation-mucus interface, while differences in mucus composition may alter available binding opportunities. Movement from mucus flow or tissue activity can challenge attachment. Consequently, a material that performs well at one mucosal site may not provide the same residence time elsewhere.
Mucosal adhesion enhancement changes how long a formulation remains near the administration site rather than simply increasing the amount of drug delivered. Prolonged contact can support greater local exposure and controlled release, potentially improving treatment effectiveness without relying only on a higher dose. Its benefit therefore depends on residence at the target mucosa and the formulation's release behavior.
Two broad approaches are supported: incorporating mucoadhesive polymers into a formulation or modifying the formulation surface to promote interaction with mucins. Selection should consider whether the intended mechanism relies on hydrogen bonding, electrostatic attraction, chain interpenetration, or hydration. Material properties must also be matched to local hydration, mucus composition, and physiological movement.
Clinical research can apply this strategy across nasal, buccal, ocular, gastrointestinal, and vaginal mucosa. These sites differ in mucus characteristics and physiological movement, so the same adhesion approach may produce different outcomes. The central application is to keep a drug formulation or biomaterial at the intended site longer, supporting local exposure and site-specific treatment goals.
Longer retention can increase local drug exposure and support controlled release at the administration site. These effects may reduce dosing frequency and increase treatment effectiveness, particularly when clearance would otherwise limit contact time. The expected outcome is not automatic: success remains dependent on the formulation's material properties and the hydration, mucus, and movement conditions at the target site.