Anti-Inflammatory Applications of Forsythia Suspensa Extracts

Forsythia suspensa, known in traditional Chinese medicine as Forsythiae Fructus, has been employed for centuries as a heat‐clearing and detoxifying agent. Modern pharmacological investigations have isolated key bioactive constituents—including phenylethanoid glycosides (forsythiaside A and B), lignans (arctiin, phillyrin) and flavonoids—that exhibit potent anti‐inflammatory effects. These extracts are capable of inhibiting cyclooxygenase-2 expression and suppressing nuclear factor-κB activation, thereby reducing the production of nitric oxide and pro‐inflammatory cytokines such as interleukin-1β, interleukin-6 and tumour necrosis factor-α. Both in vitro and in vivo models show attenuation of neutrophil infiltration, oxidative stress and tissue damage. Advances in metabolomic and proteomic profiling have unveiled multi‐target mechanisms, demonstrating effects on nicotinate and nicotinamide metabolism, purine and pyrimidine pathways, and modulation of extracellular matrix proteins. Together, these findings underscore the potential of Forsythia suspensa extracts as adjunctive therapies in chronic inflammatory conditions, with applications ranging from dermatological to neuroinflammatory disorders. Ongoing efforts focus on optimising extraction methods, enhancing bioavailability and establishing safety profiles to support clinical translation.

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Anti-Inflammatory Applications of Forsythia Suspensa Extracts publication trend

The graph below shows the total number of articles in anti-inflammatory applications of forsythia suspensa extracts across all publications each year (not limited to Nature Index journals).

Technical terms

Nuclear factor-κB (NF-κB): A transcription factor central to the regulation of genes involved in inflammatory responses and immune function.

Cyclooxygenase-2 (COX-2): An inducible enzyme responsible for the conversion of arachidonic acid into pro‐inflammatory prostaglandins.

Phenylethanoid glycosides: A class of polyphenolic compounds characterised by a phenylethyl group linked to one or more sugar moieties, which contribute substantially to the anti‐inflammatory effects of Forsythia suspensa extracts.

References

1. Forsythiae Fructus: A Review on its Phytochemistry, Quality Control, Pharmacology and Pharmacokinetics. Molecules (2017).
2. Anti-inflammatory function of arctiin by inhibiting COX-2 expression via NF-κB pathways. Journal of Inflammation (2011).
3. Exploration of anti-inflammatory mechanism of forsythiaside A and forsythiaside B in CuSO4-induced inflammation in zebrafish by metabolomic and proteomic analyses. Journal of Neuroinflammation (2020).