Revised: May 10, 2026
Accepted: June 2, 2026
Published online: July 27, 2026
Processing time: 110 Days and 0.2 Hours
Fuling Zexie decoction (FZD), in which Poria (PR) occupies the foremost position in the prescription hierarchy, is used to treat metabolic dysfunction-associated steatotic liver disease (MASLD). However, the pharmacodynamic contribution of PR to the effects of FZD remains unclear and the yield of PR from aqueous ex
To clarify the contribution of PR to the effects of FZD in MASLD treatment.
The contribution of PR to the therapeutic efficacy of FZD was evaluated in high-fat diet-fed MASLD rats. The mechanisms and active substances were explored by integrating metabolomics and serum pharmacochemistry.
FZD and FZD supplemented with PR dregs alleviated lipid accumulation and tissue fibrosis in MASLD, while FZD without PR (ZD) showed no effect. FZD uniquely altered 148 metabolites and five pathways. FZD exhibited 10 unique drug-derived components in blood, six of which were derived from PR. Moreover, 20 active components in FZD specifically regulated 17 MASLD-related targets, among which the key targets, including phosphatidylinositol-4,5-bisphosphate 3-kinase, catalytic subunit alpha, phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit beta, aldo-keto reductase family 1 member B10, and aldo-keto reductase family 1 member B1, were upregulated. Both the key active compounds of FZD and PR-derived compounds in FZD modulated pho
PR, a component of FZD, plays an irreplaceable role in treating MASLD, which may be attributed to the presence of diverse and distinctive components in FZD, along with its specific regulation of five pathways and 148 me
Core Tip: This study clarified the specific contribution of Poria (PR) as the “sovereign” drug in Fuling Zexie decoction (FZD) for metabolic dysfunction-associated steatotic liver disease. We confirmed that PR plays an irreplaceable role and its removal significantly weakened the therapeutic efficacy of FZD. The superior effects of FZD were attributed to diverse active components (six derived from PR), the specific regulation of five metabolic pathways (biotin, ascorbate/aldarate, alanine/aspartate/glutamate, inositol phosphate, and galactose metabolism), and 148 differential metabolites. Additionally, incorporating PR dregs enhanced antioxidant and anti-inflammatory activities, indicating that water-insoluble polysaccharides are key bioactive constituents.