Ginsenoside Rb1 Alleviated High-Fat-Diet-Induced Hepatocytic Apoptosis via Peroxisome Proliferator-Activated Receptor...

Area of Science:

• Hepatology
• Pharmacology
• Molecular Biology

Background:

• Nonalcoholic fatty liver disease (NAFLD) is characterized by hepatic cell apoptosis, often induced by high-fat diets (HFD).
• Understanding molecular mechanisms underlying HFD-induced liver injury is crucial for developing effective treatments.

Purpose of the Study:

• To investigate the therapeutic effect of Ginsenoside Rb1 (GRb1) on hepatocyte apoptosis in a mouse model of NAFLD.
• To elucidate the role of peroxisome proliferator-activated receptor gamma (PPAR-γ) in GRb1's protective effects.

Main Methods:

• Induction of liver injury and apoptosis in C57BL/6J mice using a high-fat diet (HFD).
• Administration of Ginsenoside Rb1 (GRb1) to HFD-fed mice, with and without the PPAR-γ inhibitor GW9662.
• Assessment of hepatic apoptosis levels and PPAR-γ expression.

Main Results:

• HFD-induced liver injury in mice showed downregulated PPAR-γ and upregulated hepatocyte apoptosis compared to control groups.
• GRb1 treatment significantly elevated hepatic PPAR-γ levels and suppressed hepatocyte apoptosis in HFD-fed mice.
• The PPAR-γ inhibitor GW9662 abolished the anti-apoptotic effects of GRb1, indicating a crucial role for PPAR-γ.

Conclusions:

• Ginsenoside Rb1 (GRb1) effectively alleviates high-fat-diet-induced hepatocyte apoptosis in mice.
• The protective mechanism of GRb1 involves the upregulation of peroxisome proliferator-activated receptor gamma (PPAR-γ).
• Targeting PPAR-γ may be a viable strategy for managing NAFLD-related liver injury.