Likelihood of tick bite to cause red meat allergy could be higher than previously thought

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Until now it has been believed that in order for a tick to trigger an allergic immune response to alpha-gal in humans, the tick would need to have recently fed on the alpha-gal-rich blood of a mammal. New research from the UNC School of Medicine presented at the American Academy of Allergy, Asthma and Immunology (AAAAI) annual conference in San Francisco shows that may not be so.

Alpha-gal is a sugar found in most mammal blood, except humans. When humans develop an allergic to it, this response can lead to a red meat allergy called alpha-gal syndrome (AGS).

"Our original hypothesis was that humans developed the allergy after being exposed to alpha-gal through a that had fed on a deer, dog or other small mammal that has alpha-gal," said Dr. Scott Commins, associate professor of medicine and pediatrics at UNC School of Medicine. "This new data suggests that ticks can induce this immune response without requiring the mammal blood meal, which likely means the risk of each bite potentially leading to the allergy is higher than we anticipated."

To reach these findings, researchers stripped of their Immunoglobulin E (IgE), antibodies produced by the immune system during an allergic reaction. The stripped white blood cells were then primed with plasma from individuals with AGS and without AGS. Then, researchers added to the cells tick salivary gland extract from four species of ticks—Lone Star, Deer, Gulf Coast and American Dog. Some of the ticks had recently fed on blood containing alpha-gal, and some had not.

As researchers expected, saliva from the Lone Star and Deer ticks that recently fed on blood caused a reaction. However, saliva from those same types of tick that had not recently fed on blood also caused a reaction. Saliva from a Lone Star tick that had not recently fed caused reactivity 40 times higher compared to the control. Neither type of saliva from the Gulf Coast nor the American Dog ticks caused a reaction.

Because samples of both blood-fed and non--fed tick saliva in these experiments exhibited a range of reactivity, Commins says, "These results suggest that more tick bites than we initially suspected could pose a risk for developing red meat ."

There is no treatment for AGS, other than avoiding foods and products that cause a reaction. Commins urges everyone to take precautions to prevent tick bites.

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Citation: Likelihood of tick bite to cause red meat allergy could be higher than previously thought (2019, February 23) retrieved 19 August 2019 from
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Feb 24, 2019
A pathogen that causes vegetarianism in the midst of AGW hysteria... one way to get rid of cow farts. Also on the market: chemicals that reduce sperm counts, increase miscarriages, cause impotence, cause prostate, testicular, ovarian cancer.

Also mad cow disease, Crohn's disease, opioid addiction, tobacco... how many other ways are the Engineers reducing the birthrate?

Besides the over ONE BILLION ABORTIONS worldwide since roe v wade of course, and family planning/contraception preventing perhaps a billion more? Let's not forget legalized postnatal infanticide courtesy freedom-loving progressives.

Every little bit helps you see. Too many people, not enough time. THAT much is obvious.

Feb 24, 2019
In related news 2030;
"Under the new illegal emigration law el Presidente for Life Alexandria Ocasius Cortezius the Great has seized the offshore assets and passports of thousands of Americans deemed 'too rich to leave', following the lead of her nameless predecessor who heavily penalized the corporations that had made these citizens rich for leaving the US."

Hail Empire.

Feb 24, 2019
Hail Empire. Hagelreiches Reich! Hagelreiches Reich!

Well said Otto! Well said.

Law and order conservative tyrants are historically preferred to the chaos and anarchy of progressive demagogues like El Presidente For Life Ocasius Cortezius The Great.

Feb 24, 2019
oh otto my deer, you really sgould have read the article before leaping into your usual tedious repetitions of lies & agitprop. But then again a puppet reflects the master. The way the Moon reflects the Sun.

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