Troxerutin Endothelial Cytoprotector: Activates PI3K/Akt Pathway to Protect Vascular Endothelium from Oxidative Stress

1. Description

Troxerutin is a trihydroxyethylated derivative of the natural bioflavonoid rutin, also known as Vitamin P4. Its molecular formula is C₃₃H₄₂O₁₉, and its molecular weight is approximately 742.67 Da. It appears as a pale yellow to yellow crystalline powder with a melting point of 181°C. In terms of solubility, it is soluble in DMSO (solubility ranging from 93 to 262.5 mg/mL) and water (approximately 92 mg/mL), and slightly soluble in ethanol. It must be stored at low temperatures, protected from light, and kept in a sealed container; in powder form, it can be stored for 3 years at -20°C. This compound inhibits the production of reactive oxygen species and suppresses NOD activation mediated by endoplasmic reticulum stress, exhibiting various biological activities including antioxidant, anti-inflammatory, and vasoprotective effects.

2. Application

(1) Studies on chronic venous insufficiency: Used to treat chronic venous insufficiency, clinical studies have shown that it reduces leg edema volume and improves subjective symptoms, and has a positive effect on capillary perfusion and venous stasis.

(2) Neuroprotection and Cognitive Studies: In D-galactose-induced models of oxidative stress and cognitive impairment, it is used to investigate the mechanisms underlying the mitigation of cognitive decline by reducing levels of protein carbonyls, reactive oxygen species, and advanced glycation end products, thereby enhancing PI3K/Akt activation.

(3) Ocular Disease Research: In early-stage models of streptozotocin-induced diabetic retinopathy, it is being studied for its potential role in inhibiting retinal neovascularization and vascular endothelial growth factor (VEGF) expression.

(4) Cardiovascular disease research: In studies of patients with acute myocardial infarction, it is used to explore its role in reducing plasma levels of α-aminocaproic acid, homocysteine, triglycerides, cholesterol, and low-density lipoprotein apolipoprotein B.

(5) Oxidative Stress and DNA Protection Research: Used to investigate the mechanisms by which it protects membrane structures from oxidative DNA damage, effectively inhibiting oxidative damage caused by neutrophils and γ-radiation.

(6) Anti-inflammatory and Immunomodulatory Research: Used to investigate the anti-inflammatory mechanisms involved in inhibiting lipid peroxidation and regulating the expression of NF-κB p65, iNOS, and COX-2.

3. Main Efficacy

(1) Antioxidant effects: Inhibits the production of reactive oxygen species, reduces levels of protein carbonyls and advanced glycation end products, and protects cells from oxidative stress damage.

(2) Vascular protective effects: Reduces red blood cell aggregation, improves capillary perfusion, and has a positive effect on nutritional complications associated with chronic venous insufficiency.

(3) Neuroprotective effects: By enhancing PI3K/Akt activation, it attenuates D-galactose-induced oxidative stress and cognitive impairment, thereby improving cognitive function.

(4) Anti-inflammatory effects: Inhibits NOD activation mediated by endoplasmic reticulum stress, modulates the NF-κB signaling pathway, and reduces inflammatory responses.

(5) Cardiovascular protection: Reduces plasma levels of homocysteine, triglycerides, cholesterol, and LDL in patients with acute myocardial infarction.

(6) DNA protection: Protects membrane structures from oxidative DNA damage and effectively inhibits γ-radiation-induced DNA strand breaks.

(7) Ocular protection: In the early stages of diabetic retinopathy, it inhibits the upregulation of vascular endothelial growth factor (VEGF) in the retina, thereby reducing neovascularization and microaneurysms.