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Obesity / Glucolipid Metabolic Disorders · Journal article
Journal of Ethnopharmacology · June 29, 2026
Early or partial results. Treat as a signal, not a conclusion.
This preclinical study identifies a putative mechanism by which Tianhuang Formula and its active component GsRg1 enhance hypothalamic autophagy and improve central insulin signaling and oxidative stress in diet-induced obese rats and neuronal cell models. The work is mechanistic and exploratory, establishing pathway plausibility in controlled laboratory settings without quantified efficacy endpoints or human evidence.
Preclinical mechanistic study combining network pharmacology, in vivo animal models, and in vitro cellular assays. Diet-induced obese (DIO) rats; GT1-7 neurons and BV2 microglia cell lines treated with palmitic acid or autophagy inhibitor. Intervention: Tianhuang Formula (THF) and Ginsenoside Rg1 (GsRg1); in vitro Rapamycin and 3-MA for pathway manipulation. Compared with: Untreated controls (DIO rat, cell models); comparisons between autophagy activator and inhibitor conditions.
THF and GsRg1 enhanced IRS expression and activated PI3K/Akt pathway in central insulin signaling THF and GsRg1 reduced hypothalamic oxidative stress via the Nrf2 pathway THF and GsRg1 significantly enhanced hypothalamic autophagy in vivo in DIO rats
Network pharmacology results not detailed; mechanism inferred from pathway targets without direct quantification
This mechanistic work may inform future translational studies of Tianhuang Formula for metabolic disorders involving central insulin resistance, but human efficacy and safety data are required before clinical consideration.
Preclinical mechanistic study in animal models and cell cultures demonstrating pathway involvement; lacks clinical efficacy data, human trials, or quantified effect sizes to support clinical translation.
As stated by the source record.
This mechanistic work may inform future translational studies of Tianhuang Formula for metabolic disorders involving central insulin resistance, but human efficacy and safety data are required before clinical consideration.
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What is missing. This record has no reported figures. That is a gap in the analysis, not a judgement about the study.
Ethnopharmacological relevance. Tianhuang Formula (THF) has been shown to regulate glucose and lipid metabolism. Maintaining functional hypothalamic autophagy is crucial for central metabolic homeostasis, as its dysregulation leads to insulin resistance and oxidative stress. Nevertheless, the precise functional role and mechanistic basis of THF in regulating glucose and lipid metabolism through the central nervous system require further elucidation.Aim. The present study was designed to explore the mechanisms through which THF and its principal component, Ginsenoside Rg1 (GsRg1), alleviate central insulin resistance and oxidative stress.Materials and methods. Network pharmacology was used to clarify THF's mechanisms in ameliorating central insulin resistance. The effects of THF and its active compound GsRg1 on hypothalamic insulin signaling, oxidative stress and autophagy were then examined in diet-induced obese (DIO) rats and in GT1-7 neurons and BV2 microglia treated with palmitic acid or an autophagy inhibitor.Results. THF's potential targets in pathways like PI3K/Akt relevant to neuronal activity and insulin resistance were identified through network pharmacology, highlighting GsRg1 as a key active component. In DIO rats and cellular models, THF and GsRg1 improved central insulin signaling by enhancing IRS expression and activating PI3K/Akt, and reduced hypothalamic oxidative stress via the Nrf2 pathway. Critically, they significantly enhanced hypothalamic autophagy in vivo. In vitro experiments using the autophagy activator Rapamycin and the inhibitor 3-MA showed that this autophagic upregulation underpins the improvements in insulin signaling and reductions in oxidative stress.Conclusion. THF and its key component GsRg1 alleviate central insulin resistance and hypothalamic oxidative stress primarily by upregulating hypothalamic autophagy, thereby regulating insulin signaling. GsRg1 is essential for THF's central metabolic benefits.
Taken from the source record, never inferred. Follow any of these and new work involving them reaches your briefing.