Actions of multiple doses of resveratrol on oxidative and inflammatory markers in plasma and brain of healthy and arthritic rats

• Published in: Basic & clinical pharmacology & toxicology 2021-01, Vol.128 (1), p.80-90
• Main Authors: Castro, Lorena dos Santos, Bracht, Lívia, Peralta, Rosane Marina, Maróstica, Heloisa Vialle Pereira, Comar, Jurandir Fernando, Babeto de Sá‐Nakanishi, Anacharis, Bracht, Adelar
• Format: Article
• Language: English
• Subjects: Albumins; Animals; Anti-Inflammatory Agents - administration & dosage; Antioxidants; Antioxidants - administration & dosage; Arthritis; Arthritis, Experimental - blood; Arthritis, Experimental - drug therapy; Biomarkers - blood; Brain; Brain - drug effects; Brain - metabolism; Catalase; Catalase - metabolism; Free radicals; Inflammation; Inflammation Mediators - blood; lipid damage; Lipids; Male; Markers; Mitochondria; Mitochondria - drug effects; Mitochondria - metabolism; myeloperoxidase; Oral administration; Oxidants; Oxidative Stress - drug effects; Oxidizing agents; Peroxidase; Peroxidase - blood; Plasma; protein damage; Protein thiols; Proteins; Rats; Rats, Sprague-Dawley; Reactive oxygen species; Reactive Oxygen Species - metabolism; Resveratrol; Resveratrol - administration & dosage; thiol levels; Thiols; Xanthine oxidase; Xanthine Oxidase - metabolism
• ISSN: 1742-7835; 1742-7843
• DOI: 10.1111/bcpt.13475

The actions of resveratrol in brain and plasma of rats with adjuvant‐induced arthritis were investigated. Resveratrol was administered orally during a period of 23 days. A major concern of the present work was to explore an ample range of daily doses (10‐200 mg/kg). Several oxidative and inflammatory markers were measured. Important effects of resveratrol treatment were the normalization of the plasma myeloperoxidase activity (inflammatory marker), the normalization of the brain xanthine oxidase activity (reactive oxygen species source) and the near‐normalization of the catalase activity in the brain (antioxidant defence). These effects presented obvious dose dependencies in the range up to 200 mg/kg. Resveratrol also reduced protein and lipid damage within the lowest dose ranges investigated, and its action as a free radical scavenger activity was enhanced in brain mitochondria of arthritic rats. Resveratrol failed in restoring the diminished albumin levels and plasma protein thiols in arthritic rats. The latter, however, were substantially increased in healthy rats at low doses (up to 50 mg/kg), a sign of antioxidant action. This increase was reversed at higher doses, a sign of pro‐oxidant action. The observations agree with the notion that low doses of resveratrol might be useful as an adjuvant to the conventional antirheumatic drugs.