OBJECTIVES: The metabolism of cells in inflammatory and noninflammatory arthritic joint diseases is subject to complex environmental controls. The aim of the present study was to investigate the total antioxidant capacity (TAC), levels of lipid peroxidation (LPO), and antioxidant enzyme activities in patients with rheumatoid arthritis (RA) and osteoarthritis (OA). DESIGN AND METHODS: Plasma levels of TAC, malondialdehyde (MDA), the activities of some erythrocyte antioxidant enzymes, as well as erythrocyte sedimentation rates (ESR) were estimated in patients with RA and OA and compared with controls. RESULTS: The plasma TAC levels were significantly lower in the RA group than the OA and control group (P < 0.05). Plasma MDA concentrations were significantly higher in patients with RA than those with OA and healthy subjects (P < 0.05). Erythrocyte GSH-Px and CAT activities were found to be significantly lower in patients with RA than those with OA and healthy subjects (P < 0.05, P < 0.05, respectively). However, there were no significant differences in erythrocyte SOD activities between the groups (P > 0.05). ESR were significantly higher in RA patients than in healthy subjects and patients with OA (P < 0.01). Moreover, there were significant negative correlations between TAC vs. MDA, ESR vs. TAC, and a positive correlation between ESR vs. MDA in the RA group (r = -0.398, P < 0.05; r = -0.422, P < 0.05; r = 0.530, P < 0.05, respectively). CONCLUSIONS: Our results demonstrated that levels of LPO are increased in patients with RA compared to patients with OA. In addition, plasma TAC levels are decreased in RA due to its inflammatory character. We conclude that detecting plasma TAC levels with this novel method may be used as a routine and rapid test to verify the levels of oxidative stress in RA. Furthermore, correlating TAC and LPO levels with acute phase reactants such as ESR may give some clues about disease activity in RA.
OBJECTIVES: The metabolism of cells in inflammatory and noninflammatory arthritic joint diseases is subject to complex environmental controls. The aim of the present study was to investigate the total antioxidant capacity (TAC), levels of lipid peroxidation (LPO), and antioxidant enzyme activities in patients with rheumatoid arthritis (RA) and osteoarthritis (OA). DESIGN AND METHODS: Plasma levels of TAC, malondialdehyde (MDA), the activities of some erythrocyte antioxidant enzymes, as well as erythrocyte sedimentation rates (ESR) were estimated in patients with RA and OA and compared with controls. RESULTS: The plasma TAC levels were significantly lower in the RA group than the OA and control group (P < 0.05). Plasma MDA concentrations were significantly higher in patients with RA than those with OA and healthy subjects (P < 0.05). Erythrocyte GSH-Px and CAT activities were found to be significantly lower in patients with RA than those with OA and healthy subjects (P < 0.05, P < 0.05, respectively). However, there were no significant differences in erythrocyte SOD activities between the groups (P > 0.05). ESR were significantly higher in RApatients than in healthy subjects and patients with OA (P < 0.01). Moreover, there were significant negative correlations between TAC vs. MDA, ESR vs. TAC, and a positive correlation between ESR vs. MDA in the RA group (r = -0.398, P < 0.05; r = -0.422, P < 0.05; r = 0.530, P < 0.05, respectively). CONCLUSIONS: Our results demonstrated that levels of LPO are increased in patients with RA compared to patients with OA. In addition, plasma TAC levels are decreased in RA due to its inflammatory character. We conclude that detecting plasma TAC levels with this novel method may be used as a routine and rapid test to verify the levels of oxidative stress in RA. Furthermore, correlating TAC and LPO levels with acute phase reactants such as ESR may give some clues about disease activity in RA.
Authors: Marli C Cupertino; Kyvia L C Costa; Daiane C M Santos; Rômulo D Novaes; Suellen S Condessa; Ana C Neves; Juraci A Oliveira; Sérgio L P Matta Journal: Int J Exp Pathol Date: 2013-10 Impact factor: 1.925
Authors: Bochra Gargouri; Jos Van Pelt; Abd El Fatteh El Feki; Hammadi Attia; Saloua Lassoued Journal: Mol Cell Biochem Date: 2008-12-11 Impact factor: 3.396
Authors: Rômulo D Novaes; Reggiani V Gonçalves; Marli C Cupertino; Daiane C S Marques; Damiana D Rosa; Maria do Carmo G Peluzio; Clóvis A Neves; João Paulo V Leite Journal: Int J Exp Pathol Date: 2012-03-19 Impact factor: 1.925
Authors: Rômulo D Novaes; Reggiani V Gonçalves; Marli C Cupertino; Eliziária C Santos; Solange M Bigonha; Geraldo J M Fernandes; Izabel R S C Maldonado; Antônio J Natali Journal: Int J Exp Pathol Date: 2016-06-09 Impact factor: 1.925
Authors: Rômulo Dias Novaes; Eliziária C Santos; Marli C Cupertino; Daniel S S Bastos; Jerusa M Oliveira; Thaís V Carvalho; Mariana M Neves; Leandro L Oliveira; André Talvani Journal: Parasitol Res Date: 2015-04-28 Impact factor: 2.289