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Snake Venom Offers Safer Surgery For Patients On Blood Thinners

by Shirley Johanna on November 12, 2015 at 6:45 PM
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Snake Venom Offers Safer Surgery For Patients On Blood Thinners

A team of researchers have found that snake venom paired with nanofibers can be used as an effective clotting agent when a patient is on an anti-coagulant drug such as heparin.

Currently, doctors can take several approaches to reduce bleeding in surgical patients on heparin and other blood thinners, including applying pressure, sutures, foams and adhesives. But these options can come with potentially serious risks.

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Some can introduce toxic byproducts into a patient, spark an allergic reaction or cause tissue to die. To come up with a better alternative, Jeffrey D. Hartgerink and colleagues turned to an enzyme from snake venom that causes blood to coagulate even if it contains heparin. Called batroxobin, the enzyme is already in clinical use for another condition. But using it to control bleeding is problematic because it dissolves quickly and moves away from where it's originally introduced -- a problem when trying to heal surgical incisions.

To override batroxobin's tendency to disperse, the researchers paired it with "sticky" nanofibers to make the enzyme stay put. The therapy, which was tested on rats treated with heparin, promoted localized blood clotting at a wound site within 20 seconds. The researchers say with further testing, the approach could eventually help make surgery safer for human patients taking heparin.

The study using the therapy on rats appears in the journal ACS Biomaterials Science & Engineering.

Source: Eurekalert
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