Nanoscavenger found to protect rodents against nerve agent attacks

gas attack
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A team of researchers from the University of Washington, the Army Medical Research Institute of Chemical Defense and Texas A&M University has developed a nanoscavenger that is capable of protecting mice against nerve agent attacks. In their paper published in the journal Science Translational Medicine, the group explains how they came up with the nanoscavenger and how well it worked during testing.

Chemical weapons became infamous during the First World War as armies used them against one another during trench warfare. Since that time, international bodies have tried to convince countries to ban such agents during wartime because of their horrible impact on the . That has not deterred or governments such as those in Syria from using them, however. Because of that, scientists have been working diligently to develop a pre-treatment that would protect people exposed to —the deadly component in . As part of such research, scientists have attempted to develop what they describe as prophylactic "scavenging" molecules that both track down nerve agent components and then neutralize them. Until now, progress has been slow. Compounds developed have tended to degrade in the body too quickly to be effective. In this new effort, the researchers report that they have developed a nanoscavenger that proved to be effective in protecting rats and .

The new nanoscavenger was made by wrapping an enzyme that targets in a polymer gel coating. The particles that resulted were nano-sized, which made them small enough to go undetected by the , allowing them to remain in the body long enough to neutralize nerve agents.

The researchers report that when they injected rats with the nanoscavenger, it induced immunity to nerve agent attacks for up to five days. And there were no known side effects. Guinea pigs given injections of the nanoscavenger were protected for up to eight days.

Such a nanoscavenger could be considered a form of vaccine against organophosphate-based if used in humans. But before that can happen, the team will test them in monkeys, and if all goes well, start human trials.


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More information: Peng Zhang et al. Nanoscavenger provides long-term prophylactic protection against nerve agents in rodents, Science Translational Medicine (2019). DOI: 10.1126/scitranslmed.aau7091
Journal information: Science Translational Medicine

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Citation: Nanoscavenger found to protect rodents against nerve agent attacks (2019, January 3) retrieved 22 September 2019 from https://medicalxpress.com/news/2019-01-nanoscavenger-rodents-nerve-agent.html
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