Aged garlic extract suppresses inflammation in apolipoprotein E-knockout mice.

Area of Science:

• Cardiovascular Research
• Inflammation Biology
• Nutraceutical Science

Background:

• Chronic inflammation is a key driver in the development and advancement of atherosclerotic plaques.
• Understanding the mechanisms by which natural compounds affect atherosclerosis is crucial for developing preventative strategies.

Purpose of the Study:

• To investigate the anti-inflammatory effects of aged garlic extract (AGE) in a mouse model of atherosclerosis.
• To elucidate the molecular pathways through which AGE may retard the progression of atherosclerotic lesions.

Main Methods:

• Apolipoprotein E-knockout (ApoE-KO) mice were administered a standard diet with or without 3% aged garlic extract (AGE) for 12 weeks.
• Measurements included atherosclerotic lesion progression, serum levels of C-reactive protein (CRP) and thromboxane B2 (TXB2), and hepatic levels of tumor necrosis factor alpha (TNF-α), interleukin-1 receptor-associated kinase 4 (IRAK4), and phospho-AMP-activated protein kinase (p-AMPK).

Main Results:

• AGE administration inhibited atherosclerotic lesion progression by 27%.
• Serum levels of CRP and TXB2 were reduced by 39% and 33%, respectively.
• Hepatic levels of TNF-α and IRAK4 decreased by 35% and 60%, respectively, while phospho-AMPK levels doubled.

Conclusions:

• The anti-atherosclerotic effect of AGE is mediated through the suppression of inflammatory pathways.
• AGE reduces key inflammatory markers (CRP, TXB2, TNF-α, IRAK4) and enhances AMPK activity in the liver.
• These findings suggest AGE as a potential therapeutic agent for mitigating atherosclerosis.