Triptolide Reduces Cholesterol Synthesis and Alleviates Neuroinflammation by Inhibiting CD33 in Alzheimer’s Disease Development and Progression
Yi Yang, Yue Ma, Pu Wang, Pei-Pei Guan · 2026
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Description
Yi Yang and co-authors report a 2026 study of triptolide, a compound from a traditional medicinal plant, in Alzheimer's disease models. High cholesterol is a known risk factor for the disease, and brain immune cells called microglia drive much of its inflammation. The team traced how triptolide connects cholesterol control to calmer brain immunity.
In the liver, triptolide restrained a cholesterol-making pathway, which lowered expression of CD33, an immune brake found on microglia. With CD33 reduced, a signaling route recovered and microglia shifted from an inflammatory state to a protective one. In a tau-based mouse model of the disease, inflammation eased and thinking decline slowed. The authors present cholesterol metabolism as the lever behind the compound's benefit, while noting it remains a research-stage finding.
Catalog record
| CREATOR | Yi Yang, Yue Ma, Pu Wang, Pei-Pei Guan |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 35 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |