Hydrogen Peroxide Stimulates Pigment Epithelium-derived Factor Gene and Protein Expression in the Human Hepatocyte Cell Line OUMS-29  

Oleh:

Nakamura, K. ; Yamagishi, S. ; Yoshida, T. ; Matsui, T.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: The Journal of International Medical Research vol. 35 no. 03 (May 2007), page 427-432.
Topik: Hydrogen peroxide; pigment epithelium; human hepatocyte cell line OUMS-29

Ketersediaan

Perpustakaan FK Nomor Panggil: J11.K.2007.01 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Pigment epithelium-derived factor (PEDF) may have a protective role in atherosclerosis and is associated with the presence of components of the metabolic syndrome. Since oxidative stress has been postulated to play an important role in the pathogenesis of vascular injury in the metabolic syndrome, this study investigated the effects of hydrogen peroxide (H2O2) on PEDF in the immortalized human hepatocyte cell line OUMS-29. PEDF gene expression was measured using quantitative real-time reverse transcription–polymerase chain reaction and PEDF protein expression was analysed by Western blot. H2O2 upregulated PEDF mRNA levels and increased PEDF protein production in OUMS-29 cells in time- and dose-dependent manners. The anti-oxidant N-acetylcysteine significantly blocked H2O2-induced PEDF overexpression in OUMS-29 cells. These results suggest that hepatic PEDF levels may be elevated to counteract the effects of oxidative stress. H2O2-induced PEDF overproduction in the liver may act as a negative feedback system against vascular damage in the metabolic syndrome.

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