Scutellaria baicalensis (Huangqin)

Huangqin is the dried root of Scutellaria baicalensis Georgi, a prominent medicinal herb in Traditional Chinese Medicine (TCM) used for centuries to treat ailments such as respiratory infections, inflammation, and hypertension [1, 8]. It is important to note that Huangqin is not a single molecular target or receptor but rather a complex botanical entity containing over 40 bioactive flavonoids, most notably baicalin, baicalein, and wogonin [3, 4, 9]. These constituents engage with various therapeutic targets, including cyclooxygenase-2 (COX-2), tumor necrosis factor-alpha (TNF-α), the serotonin transporter (SLC6A4), and the gamma-aminobutyric acid type A (GABA-A) receptor [1, 2, 6, 11]. Due to its pleiotropic nature, Huangqin exhibits broad pharmacological effects, including antioxidant, neuroprotective, and antitumor activities [2, 4]. Modern pharmacological research often focuses on its purified compounds for drug development, targeting pathways like NF-κB, PI3K/Akt/mTOR, and ACE2 binding sites [4, 7, 9, 10]. Because of its multi-component and multi-target profile, it is classified as a medicinal agent or natural product source rather than a distinct biochemical target [1, 10].

Other names

Baikal skullcapChinese skullcapHuang-QinScutellariae RadixRadix Scutellariae

Huangqin operates through a multi-target mechanism where its bioactive flavonoids, such as baicalin and baicalein, inhibit cyclooxygenase-2 (COX-2) and 12/15-lipoxygenase, suppress the NF-κB and MAPK signaling pathways to reduce pro-inflammatory cytokines (e.g., TNF-α, IL-6), and modulate the GABA-A receptor to exert neuroprotective and anxiolytic effects [1, 2, 4, 11].