"Confirms oxidative stress in the pathogenesis of RA."
"Antioxidant agents can potentially be a useful addition"
Protein oxidation markers in the serum and synovial fluid of psoriatic
arthritis patients.
Firuzi O, Spadaro A, Spadaro C, Riccieri V, Petrucci R, Marrosu G,
Saso L
J Clin Lab Anal 2008 May 16; 22(3):210-215.
The role of oxidative stress has been studied in rheumatoid arthritis
(RA) and other inflammatory joint diseases to some extent, but its
importance in psoriatic arthritis (PsA) has rarely been investigated.
The aim of this study was to analyze the levels of protein oxidation
markers, sulfhydryl (SH) and carbonyl (CO) groups, in the synovial
fluid (SF) and serum of PsA patients and compare them with the
findings in RA and osteoarthritis (OA) patients.
A total of 49 subjects with a knee-joint effusion including 16 PsA, 18
RA, and 15 OA patients were studied.
In all patients, the levels of SH groups measured in the serum and SF
inversely correlated with the number of white blood cells (WBC)
(P<0.05) and the percentage of polymorphonuclear leukocytes (PMN)
(P<0.01) in SF.
Serum SH levels inversely correlated with serum erythrocyte
sedimentation rate (ESR) (P<0.02) and C-reactive protein (CRP)
(P<0.05) values.
The SH levels in SF were significantly lower in patients affected by
PsA and RA compared to OA cases (P<0.02).
The serum SH levels in PsA were lower than OA (P<0.001) and higher
than RA patients (P<0.05).
The serum and synovial levels of CO groups in PsA, RA, and OA patients
were similar.
Our study provides novel evidence on the involvement of protein
oxidation in PsA and confirms the important role of oxidative stress
in the pathogenesis of RA.
These data suggest that antioxidant agents can potentially be a useful
addition to the conventional therapy in the management of these
diseases.
J. Clin. Lab. Anal. 22:210-215, 2008. (c) 2008 Wiley-Liss, Inc.
Journal of clinical laboratory analysis [J Clin Lab Anal]
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