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    • The future of sutures...

    The future of sutures and staples: A hydrogel sealant

    Written by Anjali Nimesh Nimesh Published On 2017-11-25T19:18:51+05:30  |  Updated On 25 Nov 2017 7:18 PM IST
    The future of sutures and staples: A hydrogel sealant

    Although sutures and staples have been used for decades to close wounds or surgical incisions, both have their drawbacks: suturing can be time-consuming and can lead to extended and costly procedures, while staples are limited to use during open procedures and can cause tissue damage upon insertion, which can lead to infection. Additionally, neither offers a waterproof seal and are much stiffer than tissue, which can cause damage over time.The study is published in New England Journal of Medicine.


    Researchers in Jeffrey Karp's lab at Brigham and Women's Hospital turned to nature in hopes for a better solution. The team was inspired by the Dusky Arion slug's elastic defensive slime. The slime, a mucus-based multicomponent glue that makes the slug bond to surfaces and difficult to remove, is 97 percent water and contains two intertwined polymers with a net negative charge and positively charged proteins. Using the slime as a model, the team created a dissipative hydrogel with both ionically and covalently cross-linked polymers with a net negative charge and a bridging polymer that contained coupling reagents with a net positive charge. This resulted in the creation of an adhesive material that mediates strong interfacial contact and can stretch without breaking.


    The researchers found that this new adhesive conforms and adheres strongly to the skin, cartilage, and arteries; closes holes in heart tissue, and stops bleeding from the lesioned liver tissue.

    Brigham and Women's HospitalhydrogelinfectionJeffrey Karpliver tissueNew England Journal of Medicinestaplestissue damage
    Source : Eureka Alert

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    Anjali Nimesh Nimesh
    Anjali Nimesh Nimesh
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