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Hypometabolism, antioxidant defenses and free radical metabolism in the pulmonate land snail Helix aspersa

Gabriella R. Ramos-Vasconcelos and Marcelo Hermes-Lima^*

Oxyradical Research Group, Departamento de Biologia Celular, Universidade de Brasília, Brasília, DF, 70910-900, Brazil

View larger version (13K): [in a new window]   Fig. 1. Ratio of glutathione disulfide:total glutathione (GSSG:GSH-eq) levels during the transition from 20 day estivation (time zero) to 24 h active snails H. aspersa. Values are means ± S.E.M. (N=5 for hepatopancreas; N=4 for foot muscle). bSignificantly different from the corresponding value for estivating snails, P<0.05.

View larger version (12K): [in a new window]   Fig. 2. Concentration of thiobarbituric acid reactive substances (TBARS) during the transition from 20 day estivation (time zero) to 24 h active snails H. aspersa. Values are means ± S.E.M. (N=3-4 for hepatopancreas; N=3 for foot muscle). aSignificantly different from the corresponding value from estivating snails, P<0.01; bP<0.05; csignificantly different from the corresponding values for 5 min and 24 h active snails, P<0.05.