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Abstract
We investigated the function of the decreases in histone deacetylase (HDAC) and histone acetyltransferase (HAT) in Wegener's granulomatosis (WG) patients compared with healthy subjects. Seven patients with WG, diagnosed according to the American College of Rheumatology criteria, were examined. Fresh peripheral blood mononuclear cells were isolated from the WG patients and healthy subjects, and then whole-cell proteins were prepared. We measured the total HDAC and HAT activity in peripheral blood mononuclear cells from WG patients. The HDAC2 expression was analyzed by Western blot. We found that total HDAC activity was significantly decreased in WG patients compared to that in healthy subjects (p < 0.05). Furthermore, we found a negative correlation between total HDAC activity and C-reactive protein titer. Total HAT activity was significantly increased in WG patients. These results demonstrated reduced HDAC activity and an increase in HAT activity in WG. These were associated with concomitant induction of WG-related inflammation. Thus, dysregulation of HDAC and HAT may contribute to the disease pathogenesis of WG.
Published Version
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