Cardioprotective Effects and in-silico Antioxidant Mechanism of L-Ergothioneine in Experimental Type-2 Diabetic Rats.
Cardiovasc Hematol Agents Med Chem
; 20(2): 133-147, 2022.
Article
in En
| MEDLINE
| ID: mdl-34370646
ABSTRACT
BACKGROUND:
Diabetic cardiotoxicity is commonly associated with oxidative injury, inflammation, and endothelial dysfunction. L-ergothioneine (L-egt), a diet-derived amino acid, has been reported to decrease mortality and risk of cardiovascular injury, provides cytoprotection to tissues exposed to oxidative damage, and prevents diabetes-induced perturbation.OBJECTIVE:
This study investigated the cardioprotective effects of L-egt on diabetes-induced cardiovascular injuries and its probable mechanism of action.METHODS:
Twenty-four male Sprague-Dawley rats were divided into non-diabetic (n = 6) and diabetic groups (n = 18). Six weeks after the induction of diabetes, the diabetic rats were divided into three groups (n = 6) and administered distilled water, L-egt (35mg/kg), and losartan (20mg/kg) by oral gavage for six weeks. Blood glucose and mean arterial pressure (MAP) were recorded pre-and post-treatment, while biochemical, ELISA, and RT-qPCR analyses were conducted to determine inflammatory, injury-related and antioxidant biomarkers in cardiac tissue after euthanasia. Also, an in-silico study, including docking and molecular dynamic simulations of L-egt toward the Keap1- Nrf2 protein complex, was done to provide a basis for the molecular antioxidant mechanism of Legt.RESULTS:
Administration of L-egt to diabetic animals reduced serum triglyceride, water intake, MAP, biomarkers of cardiac injury (CK-MB, CRP), lipid peroxidation, and inflammation. Also, Legt increased body weight, antioxidant enzymes, upregulated Nrf2, HO-1, NQO1 expression, and decreased Keap1 expression. The in-silico study showed that L-egt inhibits the Keap1-Nrf2 complex by binding to the active site of Nrf2 protein, thereby preventing its degradation.CONCLUSION:
L-egt protects against diabetes-induced cardiovascular injury via the upregulation of the Keap1-Nrf2 pathway and its downstream cytoprotective antioxidants.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Diabetes Mellitus, Experimental
/
Ergothioneine
/
Antioxidants
Limits:
Animals
Language:
En
Journal:
Cardiovasc Hematol Agents Med Chem
Journal subject:
ANGIOLOGIA
/
CARDIOLOGIA
/
FARMACOLOGIA
/
HEMATOLOGIA
/
QUIMICA
/
QUIMICA CLINICA
Year:
2022
Document type:
Article
Affiliation country:
South Africa