Bio-glue Current Affairs - 2019
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Scientists have developed a super strong, flexible Bio-glue for wound healing without causing toxicity. It has been inspired by an adhesive material (glue) secreted by slugs that sticks to biological tissues
Slugs naturally secrete a special kind of mucus (adhesive material) in its place when threatened, making it difficult for a predator to pry it off its surface.
The bio-glue is double-layered hydrogel consisting of an alginate-polyacrylamide matrix supporting an adhesive layer that has positively-charged polymers protruding from its surface. It bonds to biological tissues via three mechanisms – electrostatic attraction to covalent bonds between neighbouring atoms, negatively charged cell surfaces and physical interpenetration.
This bond makes the adhesive super strong. It is the combination of a very strong adhesive force and has ability to transfer and dissipate stress. It can bind to tissues with strength comparable to the body’s own resilient cartilage.
Applications: The bio-glue has numerous potential applications in the medical field, either as a patch that can be cut to desired sizes and applied to tissue surfaces or can be also used as an injectable solution for deeper injuries.