Combination of 1,8-cineole and beta-caryophyllene synergistically reverses cardiac hypertrophy in isoprenaline-induced mice and H9c2 cells.

Combination drug therapy has become an effective strategy for chronic metabolic disease, especially cardiovascular disease. In the present study, possible drug combinations were screened and the mechanism of the combinations against cardiac hypertrophy was examined within 1,8-cineole, β-caryophyllene, linalool, and β-pinene.H9c2 cells were treatment with 1,8-cineole, β-caryophyllene, linalool, and β-pinene individually or in combination for 24 h after isoprenaline stimulation. Cell viability was detected by the MTT assay. Subsequently, bioinformatic analysis and network pharmacology were used to reveal the multi-targeted synergistic therapeutic effect of the combination treatment compounds on cardiac hypertrophy. Ultimately, western blot and elisa was performed to analyses the protein expression in vivo. MTT results found that 1,8-cineole and β-caryophyllene synergistically increased cell viability with CalcuSyn software analyses. Specifically, bioinformatic and network pharmacology analysis showed PTGS2, TNF, IL-6, AKT1, NOS2, and CAT were identified as the key targets. P13K-AKT signaling pathway was involved in the reversal of cardiac hypertrophy by the combination of 1,8-cineole and β-caryophyllene. The in vitro results indicated that the combination synergistically treated the isoprenaline-induced mice against structural and functional myocardial damage via the P13K-AKT signaling pathway. Collectively, the combined application of 1,8-cineole and β-caryophyllene synergistically reverses cardiac hypertrophy in isoprenaline-induced H9c2 cells and mice.

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