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A coagulation factor moonlights in the heart
Dan Tong1, Joseph A Hill1,2
1Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA.
Science (New York, N.Y.)
|September 22, 2022
Summary
Liver-derived coagulation factor XI, a key protein, was found to protect the heart from failure. This discovery highlights a new role for factor XI in cardiovascular health and disease.
Area of Science:
- Cardiovascular Biology
- Hematology
- Hepatology
Background:
- Coagulation factor XI (FXI) is primarily known for its role in blood clotting.
- The liver is the main site of FXI synthesis.
- Emerging evidence suggests roles for coagulation factors beyond hemostasis.
Purpose of the Study:
- To investigate the potential cardioprotective effects of liver-derived coagulation factor XI.
- To determine the mechanisms by which FXI influences cardiac function.
Main Methods:
- Utilized mouse models of cardiac stress and failure.
- Assessed cardiac function using echocardiography and histological analysis.
- Investigated FXI levels and activity in cardiac tissues and plasma.
Main Results:
- Reduced levels of coagulation factor XI were associated with increased susceptibility to cardiac failure.
- Administration of FXI ameliorated cardiac dysfunction and injury in stressed hearts.
- FXI was detected in cardiac tissue, suggesting local activity.
Conclusions:
- Liver-derived coagulation factor XI plays a significant protective role in the heart.
- FXI represents a potential therapeutic target for preventing or treating heart failure.
- Further research is warranted to elucidate the precise molecular mechanisms of FXI cardioprotection.
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