Chaihu-Shugan-San alleviates functional dyspepsia by inhibiting central sensitization and regulating glutamate metabolism via NMDAR/CaMKII signaling pathway.
Jia Y, Liu C, Jia Q, Wang J, Quan Y
Herbal Medicine
PubMedA centuries-old blend of medicinal herbs, not a synthetic drug, was scientifically shown to ease chronic digestive discomfort by acting on the brain — suggesting that plants in traditional remedies may hold real, measurable power over gut-brain health.
Functional dyspepsia is a frustrating stomach condition where people feel pain and discomfort without any clear physical cause. Researchers tested a classic Chinese herbal remedy made from multiple plants and found it calmed the nervous system's overreaction to stomach signals, essentially turning down the 'volume' on pain. The herbs also helped restore normal levels of a brain chemical called glutamate, which plays a role in how we sense discomfort.
Key Findings
607 bioactive plant compounds were identified in the herbal formula, with 129 detected in rat blood and 134 reaching the brain, confirming the herbs cross the blood-brain barrier.
CSS treatment reduced inflammatory markers (Iba1, NOX2) in the amygdala and lowered spinal cord levels of pain-signaling proteins (CaMKII, NMDAR, IL-1β), indicating reduced central pain sensitization.
Metabolomics analysis showed CSS corrected glutamate metabolism pathways in both fecal and serum samples, linking gut microbial chemistry changes to improvements in brain signaling.
chevron_right Technical Summary
A traditional Chinese herbal formula called Chaihu-Shugan-San (CSS) was shown to relieve functional dyspepsia — a chronic stomach disorder — by calming overactive pain signals in the brain and spinal cord and correcting imbalances in glutamate, a key brain chemical.
Abstract Preview
Functional dyspepsia (FD) is a common functional gastrointestinal disease. Chaihu-Shugan-San (CSS), a classical traditional Chinese medicine (TCM) formula from the Ming Dynasty "Jingyue Quanshu". C...
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