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Targeting inflammation to better understand dangerous blood clots

Date:
May 29, 2019
Source:
Michigan Medicine - University of Michigan
Summary:
Forty percent of people who develop venous thromboembolism don't know what caused it. New preclinical research further explores inflammation's role in inciting the clots.
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It's the third deadliest cardiovascular diagnosis, but doctors are still often stumped to explain why 40% of patients experience unprovoked venous thromboembolism (VTE). And after a patient has dealt with these dangerous blood clots once, a second and subsequent events become much more likely.

New research from a team of University of Michigan scientists may help solve the mystery of how to detect and deal with higher-than-usual clot risk in patients' veins. The study, done in mice and published in the Journal of Clinical Investigation, focuses on clots' relationship to the body's defense and repair system, which causes inflammation.

"We don't yet understand the molecular triggers which drive the development of life-threatening clots in deep veins," said Yogen Kanthi, M.D., the study's senior author and a vascular cardiologist at U-M's Frankel Cardiovascular Center. "Our work aimed to identify and block a previously unrecognized pathway linking inflammation and thrombosis."

Kanthi, also an assistant professor of internal medicine at Michigan Medicine, says VTE is triggered by some combination of coagulation and inflammation. But current treatments come up short, he says, because they only focus on one side of the equation: anticoagulation. After VTE, patients are often prescribed blood thinners for life.

Kanthi's lab is instead investigating inflammation's role in the development of deep vein thrombosis. His team's new study found an enzyme called CD39 diffused circulating "danger" signals and inflammatory cytokines in blood during thrombosis.

FDA-approved drugs already exist for other conditions that are affected by the same pathway, and in particular, the paradigmatic inflammatory cytokine molecule called interleukin-1 beta. In fact, when the researchers inhibited interleukin-1 signals in their study, they reduced the number and size of venous blood clots the animals formed, Kanthi said.

"Here, we focused on potential therapeutics at the intersection of inflammation and thrombosis," Kanthi said. "We showed that blocking interleukin 1 beta, a ubiquitous inflammatory molecule, was a powerful means to stop clot formation."


Story Source:

Materials provided by Michigan Medicine - University of Michigan. Note: Content may be edited for style and length.


Journal Reference:

  1. Vinita Yadav, Liguo Chi, Raymond Zhao, Benjamin E. Tourdot, Srilakshmi Yalavarthi, Benjamin N. Jacobs, Alison Banka, Hui Liao, Sharon Koonse, Anuli C. Anyanwu, Scott H. Visovatti, Michael A. Holinstat, J. Michelle Kahlenberg, Jason S. Knight, David J. Pinsky, Yogendra Kanthi. ENTPD-1 disrupts inflammasome IL-1β–driven venous thrombosis. Journal of Clinical Investigation, 2019; DOI: 10.1172/JCI124804

Cite This Page:

Michigan Medicine - University of Michigan. "Targeting inflammation to better understand dangerous blood clots." ScienceDaily. ScienceDaily, 29 May 2019. <www.sciencedaily.com/releases/2019/05/190529084835.htm>.
Michigan Medicine - University of Michigan. (2019, May 29). Targeting inflammation to better understand dangerous blood clots. ScienceDaily. Retrieved March 28, 2024 from www.sciencedaily.com/releases/2019/05/190529084835.htm
Michigan Medicine - University of Michigan. "Targeting inflammation to better understand dangerous blood clots." ScienceDaily. www.sciencedaily.com/releases/2019/05/190529084835.htm (accessed March 28, 2024).

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