In mice with obesity, a medication called semaglutide is linked to weight loss, and this weight loss may be related to lower levels of inflammation and oxidative stress in the heart.
Mechanism
Synthesis from 1 study
Semaglutide doesn't just help mice lose weight — it also tells certain immune cells to stop sending out danger signals that hurt the heart. When those signals drop, the heart experiences less swelling and fewer damaging chemicals, even if the weight loss itself isn't proven to be the direct cause.
Most probable mechanism
Semaglutide helps the body lose weight, which somehow tells certain immune cells called neutrophils to calm down. When these cells are less active, they release fewer signals that attract other inflammatory cells and produce fewer harmful chemicals that damage the heart. This leads to less swelling and less damage from unstable molecules in the heart tissue.
Semaglutide activates GLP-1 receptors on immune cells or induces systemic metabolic changes that reduce neutrophil activation
Reduced neutrophil activation lowers expression of Cxcl2, S100a8, and S100a9, which are proteins that promote immune cell recruitment and tissue damage
Lower Cxcl2 reduces chemotactic signaling that draws more neutrophils and monocytes into cardiac tissue
Lower S100a8 and S100a9 reduces formation of the calprotectin complex, which decreases activation of TLR4/NF-κB pathways and subsequent reactive oxygen species production
Decreased inflammatory signaling and oxidative stress in cardiac tissue reduces levels of TNF-α, IL-6, ROS, and MDA
Evidence from Studies
Supporting (1)
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Contradicting (0)
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