Soluble endoglin and hypercholesterolemia aggravate endothelial and vessel wall dysfunction in mouse aorta

Area of Science:

• Cardiovascular Biology
• Endothelial Function Research
• Molecular Signaling Pathways

Background:

• Elevated soluble endoglin (sEng) is linked to endothelial dysfunction and hypercholesterolemia.
• The combined impact of high sEng and hypercholesterolemia on vascular health requires further investigation.

Purpose of the Study:

• To investigate how high sEng levels exacerbate endothelial and vessel wall dysfunction in hypercholesterolemia.
• To examine the effects on endoglin/eNOS signaling in mouse aorta.

Main Methods:

• Transgenic mice with high/low sEng levels were fed a high-fat diet for six months.
• Aorta function was assessed using wire myography; molecular signaling was analyzed via Western blot.

Main Results:

• Mice with high sEng showed impaired vasoconstriction and relaxation responses in aorta.
• Reduced expression of endoglin, p-eNOS/eNOS, and pSmad2/3 signaling was observed in high sEng mice.

Conclusions:

• Long-term hypercholesterolemia with high sEng aggravates aortic endothelial and vessel wall dysfunction.
• Altered endoglin/eNOS signaling suggests high sEng is a potential cardiovascular disease risk factor.