Description
Orientin is a flavone glycoside originally isolated from
P. orientale that has diverse biological activities, including antioxidant, antibacterial, and anti-inflammatory properties. Orientin scavenges 2,2-diphenyl-1-picryl-hydrazyl (DPPH; ) radicals with an IC
50 value of 316.21 μg/ml. It also decreases the cytopathic effects of parainfluenza type 3 virus with an IC
50 value of 11.7 μg/ml and a cytotoxic concentration (CC
50) value of 375 μg/ml in Hep-2 cells. Orientin (5-40 μM) inhibits LPS-induced barrier disruption, decreases the expression of toll-like receptor 4 (TLR4), phosphorylated p38, and NF-κB, and decreases TNF-α production and IL-6 secretion in a dose-dependent manner in human umbilical vein endothelial cells (HUVECs). It also prolongs survival in a mouse model of LPS-induced lethal endotoxemia when administered at a dose of 36 μg/animal 12 hours after LPS administration.
Chemical Properties
Yellow powder
Uses
Orientin is a flavone, a chemical flavonoid compound. Orientin have been investigated for its anti-oxidant, antihypertensive and antihyperlipidemic effects.
Definition
ChEBI: A C-glycosyl compound that is luteolin substituted by a beta-D-glucopyranosyl moiety at position 8.
in vivo
Orientin (0.1–10 mg/kg for p.o.;once) inhibits allergic reaction in PCA mouse model[1].
Orientin (10–40 mg/kg for i.p.;once daily for 12 days) has an anti-neuroinflammatory effect in SNL rat model[2].
| Animal Model: | PCA mouse model[1] |
| Dosage: | 0.1–10 mg/kg |
| Administration: | Oral gavage (p.o.); Euthanized mouse after 1 h |
| Result: | Significantly suppressed PCA reactions in PCA mouse model. |
| Animal Model: | SNL rat model[2] |
| Dosage: | 10, 20, 40 mg/kg |
| Administration: | Intraperitoneal injection (i.p.); Once daily for 12 days |
| Result: | Alleviated the downreg-ulation of PWL and promoted the behavior recovery in SNL rat model.
Decreased the levels of IL-6, IL-1β and TNF-α.
Increased the level of anti-inflammatory IL-10.
Down-regulated the level of MDA.
|
References
[1] De Souza, F.I., Zumiotti, A.V., and Da Silva, C.F. Neuregulins 1-α and 1-β on the regeneration the peripheral nerves[J]. Acta Ortop Bras.
[2] NAN WU. Antioxidant activities of extracts and main components of Pigeonpea [Cajanus cajan (L.) Millsp.] leaves.[J]. Molecules, 2009, 14 3: 1032-1043. DOI:
10.3390/molecules14031032[3] YAO-LAN LI . Antiviral activities of flavonoids and organic acid from Trollius chinensis Bunge[J]. Journal of ethnopharmacology, 2002, 79 3: Pages 365-368. DOI:
10.1016/s0378-8741(01)00410-x[4] WONHWA LEE Jong S B Sae Kwang Ku. Vascular barrier protective effects of orientin and isoorientin in LPS-induced inflammation in vitro and in vivo[J]. Vascular pharmacology, 2014, 62 1: Pages 3-14. DOI:
10.1016/j.vph.2014.04.006
