Abstract
ABSTRACT Curcumin is a natural polyphenolic compound exerting antioxidative and anti-inflammatory effects on various tissues, including muscles. Nevertheless, its clinical usage has been limited because of its poor bioavailability. Thus, highly bioavailable curcumin, such as Theracurmin (CR-033P) composed of 36% crystalline curcumin, has been developed. This study investigated the antioxidant activity and muscle-protective effect of Theracurmin Super (TS-P1), a new formulation with 36% amorphous curcumin. TS-P1 and CR-033P demonstrated antioxidant activity in vitro. Compared with pure curcumin, orally administered TS-P1 or CR-033P (16.7 or 50 mg per kg of body weight) at one-third dose inhibited the elevation of plasma lactate dehydrogenase and creatine kinase levels in a mouse downhill running model, indicating superior muscle-protective effect. Particularly, TS-P1 showed better or equivalent effectiveness in restoring the activity of antioxidant enzymes including glutathione peroxidase and catalase, and in suppressing inflammatory responses. Therefore, formulation with amorphous curcumin is a promising strategy for curcumin-based supplements.
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