Jujube seed extract has been found to primarily reduce anxiety by regulating the GABAergic and serotonergic synapse pathways, specifically modulating GABRA1, HTR1A, and HTR2A.
Experimental Study Anxiety GABA system Serotonin
The research relied on a system biology method supported by Ultra Performance Liquid Chromatography Quadrupole Time of Flight Mass Spectrometry (UPLC-Q-TOF/MS) and Real-Time Quantitative Polymerase Chain Reaction (RT-qPCR). Initially, 35 phytochemicals were identified from the Jujube seed extract, which related to 71 anxiolytic targets. Further investigations, including protein-protein interaction, gene cluster, Gene Ontology, and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways analyses, were conducted to identify the anxiolytic mechanisms of the extract.
The results highlighted that the main anxiolytic mechanisms of the Jujube seed extract were linked to the regulation of serotonergic and GABAergic synapse pathways. The extract's impact on the mRNA expressions of multiple gamma-aminobutyric acid type A (GABA) and serotonin (5-HT) receptors subtypes was verified in human neuroblastoma cells. Surprisingly, the extract (250 μg/mL) not only amplified the mRNA level of GABRA1 and GABRA3 alongside HTR1A, HTR2A, and HTR2B in untreated cells but also suppressed the overexpressed mRNA of GABRA1, GABRA2, HTR1A, and HTR2A in stress-induced cells.
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