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(Newser)
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This is perhaps the most strange disease related to ticks – a mouthful can make people allergic to red meat. Now scientists have done additional research to conclude that the risk of this allergy from the celestial tick may be higher than expected. All this has to do with the refutation of the original theory of the spread of tick allergy, say researchers at the University of North Carolina via EurekAlert. The old theory: a tick would sting a deer, dog or other small mammal and feed on blood. This blood contains alpha-gal, a sugar found in the blood of almost all mammals except humans. The tick would bite a human being, and the trick would be played – the man would develop an alpha-gal syndrome, characterized by an allergic reaction to red meat. The new study shows, however, that ticks that have not fed first can also transmit the allergy.
"The result of these findings is that we now have a much larger pelvis of tick bites because it does not appear that the previous blood meal is important," said Scott Commins, of UNC, at MedPage . The researchers found that the saliva of unsupported single ticks at first sight always caused a significant reaction, about 40 times greater than that of control samples. This suggests that saliva is the culprit, although scientists do not know why or how. The single star tick still seems to be the main villain responsible for the spread of the AGS, although scientists have also observed a reaction in the saliva of deer ticks, while the ticks of the Gulf Coast and America were clear. It is not surprising that another tick may play a role, as AGS has been reported in places outside of the United States where the tick is not found. (Meanwhile, the only starry tick extends its territory to the United States.)
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