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Australian researchers reveal ants inflict pain with neurotoxins

Washington, Jun 6 (Prensa Latina) Researchers at the University of Queensland, Australia, have shown for the first time that some of the world's most painful ant stings target nerves, like snake and scorpion venom, Nature Communications reported Tuesday.

Dr. Sam Robinson and colleagues at UQ’s Institute for Molecular Bioscience discovered the ant neurotoxins while studying the Australian green ant and South American bullet ant which have stings that cause long-lasting pain.

“We have shown that these ant venoms target our nerve cells that send pain signals,” Dr. Robinson said. “Normally, the sodium channels in these sensory neurons open only briefly in response to a stimulus.”

“We discovered that the ant toxins bind to the sodium channels and cause them to open more easily and stay open and active, which translates to a long-lasting pain signal.”

“Bullet ant stings can be painful for up to 12 hours and it’s a deep drilling pain you feel in your bones with sweating and goosebumps, quite unlike the 10-minute impact of a typical bee sting.”

Dr. Robinson said research into how pain works can help develop new ways to treat it.

“These neurotoxins which target sodium channels are unique to ants, no one has found anything that looks or acts the same way so now we have a new set of tools to work with.”

Ants developed their defensive neurotoxins to fend off predators during the time of the dinosaurs and have since become one of the most successful animal groups on Earth.


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