# Effect of β-Caryophyllene on PPAR-γ, NF-κB, and CNR2: Implications for Gut–Brain Axis Communication in a Murine Model of Diet-Induced Obesity

## TL;DR

This study explores how β-caryophyllene, a natural compound, affects obesity-related genes in mice, suggesting it could be a safe alternative treatment.

## Contribution

The study reveals new insights into BCP's modulation of gut–brain axis receptors in a murine model of obesity.

## Key findings

- BCP modulates FFAR3, LEPR, and GHSR genes involved in appetite and insulin sensitivity.
- BCP's action on CNR2 suggests benefits for energy balance and appetite suppression.
- BCP shows potential as a safe complementary therapy for obesity.

## Abstract

Background /Objectives: The rising prevalence of metabolic disorders, such as obesity, is linked to increased consumption of high-calorie foods and sedentary lifestyles. While conventional treatments rely on lifestyle modifications and pharmaceuticals, these often have limitations and adverse effects. As an alternative, natural compounds like β-caryophyllene (BCP), found in spices such as black pepper and cloves, have gained interest due to their anti-inflammatory and metabolic properties. This study investigated the effects of BCP on the gut–brain axis in obese C57BL/6J mice. Methods: Quantitative real-time PCR (RT-qPCR) was performed using a Rotor-GeneQ thermocycler (Qiagen). Relative gene expression levels were normalized to the reference gene’s transcript levels (2−∆∆Ct method). Results: BCP was found to modulate key receptors, including FFAR3, LEPR, and GHSR, which are involved in appetite regulation and insulin sensitivity. Its action on the CNR2 (CB2 receptor) suggests additional benefits in energy balance and anorexigenic activity. Conclusions: These findings support BCP’s potential as a complementary therapy for obesity, though further studies are needed to confirm its efficacy in humans. Its safety profile and multifactorial effects make it a promising alternative to conventional treatments.