Iridioids

Picroside II has antioxidant, anti-inflammatory, immune regulatory, anti-virus and other pharmacological activities. It has potent anti-apoptotic activity against renal I/R injury by suppressing the TLR4/NF-κB signaling pathway, it can protect the ischemic kidney against renal fibrosis and improve the neurological function of rats upon cerebral ischemia reperfusion injury. Picroside II enhances nerve growth factor (NGF)-induced neurite outgrowth from PC12D cells by amplifying a down-stream step of MAP kinase in the NGF receptor-mediated intracellular MAP kinase-dependent signaling pathway.

Sesamoside is a main chemical ingredient iridoid glycoside from Lamiophlomic rotata , has analgesic and anti-inflammatory effects in animal studies.

Picroside I is a hepatoprotective agent which is reported to be antimicrobial and used against hepatitis B. It has antioxidant, and anti-inflammatory activities, it may be the valuable anti-invasive drug candidates for cancer therapy by suppressing Collagenases and Gelatinases. Picroside I can enhance basic fibroblast growth factor(bFGF)-, staurosporine- or dbc-mitogen-activated protein (MAP)-induced neurite outgrowth from PC12D cells.

Catalpol, an iridoid glucoside, has been reported to inhibit apoptosis of neuron and endothelial cells; the pretreatment of H9c2 cells with catalpol can be against H 2 O 2 -induced apoptosis, and the protective effect of catalpol involves the mitochondrial-dependent caspase pathway and is associated with increased Bcl-2 and decreased Bax expression.

Loganic acid( 0.7% solution) has a strong intraocular pressure (IOP)-hypotensive effect, it exhibits both sides effect on superoxide generation. Loganic acid also has protective effects on atherosclerosis risk factors in hypercholesterolemic rabbits, it shows significant anti-inflammatory effects decreasing TNF-α and IL-6 activity in serum.

Oleuropein exhibits anti-ischemic, antioxidative, hypolipidemic, in vitro antimycoplasmal , anti-inflammatory, and anti-cancer effects., it also may be helpful in the prevention of diabetic complications associated with oxidative stress. Oleuropein prevents oxidative myocardial injury induced by ischemia and reperfusion, and reduces viremia in duck hepatitis B virus (DHBV)-infected ducks. Oleuropein reduces TLR and MAPK signaling.

Sweroside and swertiamarine are main constituents in Gentian (Gentiana lutea ssp. symphyandra), Gentian has wound healing activity, seems to be mainly due to the increase in the stimulation of collagen production and the mitotic activity by sweroside and swertiamarine , respectively; they also have cytoprotective effects, which may cause a synergism in terms of wound healing activity of Gentian.