FEB 13, 2018 12:13 PM PST

Bed Bugs: More Than Just A Nuisance

WRITTEN BY: Kara Marker
3 9 550

As if bed bugs weren’t irritating enough, researchers have now associated the pests with dangerously high levels of histamine. In a new study from North Carolina State University (NCSU), scientists compared apartment homes that were bed bug-free versus homes infested with bed bugs - before and after professional heat treatment.

Bed bugs emit substantial and persistent amounts of histamine in infested homes. Credit: Matt Bertone, NC State University

Bed bugs, also known as Cimex lectularius feed on blood like mosquitoes, causing irritating bumps. But unlike mosquitoes, no evidence links the spread of disease to bed bugs. However, bed bug infestations are considered to be a public health pest by the Environmental Protection Agency (EPA), Centers for Disease Control and Prevention (CDC), and United States Department of Agriculture (USDA).

Histamine is a chemical released by the immune system that promotes inflammation, often in response to a pathogenic invasion or “cellular repair work.” Histamine is also released as part of an allergic reactions to food, pollen, or mold. Because of its connections to allergies, histamine is also used in skin and respiratory allergy tests as a positive control.

How are bed bugs and histamines related? Researchers found that bed bugs release histamine in their feces, and bed bugs sense histamine as a sign of a good place to set up shop (like a mattress).

In the new study, researchers compared histamine levels in homes in a Raleigh apartment complex, with and without bed bug infestation. They collected household dust and also examined the effect of treatment and time on histamine levels. Researchers found that histamine levels were 20 time higher in homes infested with bed bugs than in bed bug-free homes. Plus, histamine levels did not decrease significantly in three months after professional heat treatment.

"A combination of heat treatment to eradicate bed bugs and rigorous cleaning to eliminate some of the household dust could be a way to reduce these histamine levels; we'll do future testing to bear that out," explained NCSU’s Zachary DeVries. "We'll also further investigate the effects of histamine in an indoor environment, including chronic exposure to histamine at low levels."

The present study was published in the journal PLoS One.

Sources: EPA, North Carolina State University

About the Author
  • I am a scientific journalist and enthusiast, especially in the realm of biomedicine. I am passionate about conveying the truth in scientific phenomena and subsequently improving health and public awareness. Sometimes scientific research needs a translator to effectively communicate the scientific jargon present in significant findings. I plan to be that translating communicator, and I hope to decrease the spread of misrepresented scientific phenomena! Check out my science blog: ScienceKara.com.
You May Also Like
MAR 07, 2018
Microbiology
MAR 07, 2018
Immune Cells Use Bleach to Destroy Bacteria
Scientists have learned more about how immune cells use a toxic cocktail to battle bacteria.
APR 03, 2018
Immunology
APR 03, 2018
New Compound Stimulates Cancer-Killing Invariant Natural Killer T Cells
Stimulating the immune system to better fight cancer and infections is now possible with a synthesized compound called AH10-7. Researchers from the Univers
APR 19, 2018
Immunology
APR 19, 2018
New Treatment for Psoriasis and Other Autoimmune Diseases
The same compound that helps immune cells detect bacteria during an invasion could help scientists design a new drug to treat psoriasis, an autoimmune dise
JUN 13, 2018
Health & Medicine
JUN 13, 2018
Insurance Denials Prevent Patients From Getting Hep C Medication
Some ads are running on television and in major magazines about drugs for hepatitis C, known as Hep C or HCV. Available in the United States since 2014, th
JUN 21, 2018
Immunology
JUN 21, 2018
The Silver Tsunami: An Aging Immune System and Cancer
Why do cases of cancer become more common as we get older? Scientists interested in explaining the so-called “Silver Tsunami” phenomenon look t
JUL 17, 2018
Videos
JUL 17, 2018
Encouraging Progress on HIV Vaccine
In the quest to find a vaccine against HIV which causes AIDS, most attempts have failed. The HIV epidemic began about 35 years ago and in that time only fi
Loading Comments...