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Abstract Title:

Antioxidant effect of lemon verbena extracts in lymphocytes of university students performing aerobic training program.

Abstract Source:

Scand J Med Sci Sports. 2012 Aug ;22(4):454-61. Epub 2010 Nov 18. PMID: 21083769

Abstract Author(s):

L Carrera-Quintanar, L Funes, E Viudes, J Tur, V Micol, E Roche, A Pons

Article Affiliation:

L Carrera-Quintanar

Abstract:

Aerobic training is related to an increase in blood oxidation markers. The purpose of the present study was to investigate the antioxidant capacity of Lippia citriodora extracts (PLX(®) ) on plasma and blood cell oxidative status of university students beginning a 21 days aerobic training routine (3 days/week). Using a double-blind design, 15 male athletes (21 ± 2.1 years) were assigned to a group consuming 1.8 g/day of the plant extract (PLX(®) -group) or a placebo (PLB-group). Two blood extractions were performed at day 0 and 21, from which lymphocytes, erythrocytes and plasma were isolated. Several circulating parameters, antioxidant enzyme activities and oxidative stress markers were measured. The PLX(®) -group displayed an increased HDL-cholesterol, a modest decrease in erythrocyte number and an increased circulating urea. Activation of glutathione (GSH)-reductase was observed in erythrocytes and lymphocytes of PLX(®) -group, accompanied by lower levels of oxidative stress markers, such as malondialdehyde and protein carbonyls in plasma. The antioxidant action exerted by PLX(®) on GSH-reductase seems to be post-translational and mainly due to verbascoside, a phenylpropanoid that represents 10% (w/w) of extract content. In conclusion, PLX(®) shows antioxidant properties that could play an important role in modulating GSH-reductase activity in lymphocytes and erythrocytes and protecting plasma from exercise oxidative damage.

Study Type : Human Study

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