Comparison of spectrophotometric, HPLC and chemiluminescence methods for 3-nitrotyrosine and peroxynitrite interaction

Turan N., Ark M. , Demiryurek A.

ARCHIVES OF PHARMACAL RESEARCH, cilt.28, sa.3, ss.358-363, 2005 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 28 Konu: 3
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1007/bf02977805
  • Sayfa Sayıları: ss.358-363


We have studied the interaction of 3-nitrotyrosine with peroxynitrite using three different methods; chemiluminescence, spectrophotometry and HPLC. Peroxynitrite-induced luminol or lucigenin chemiluminescence were significantly decreased by 3-nitrotyrosine, in concentration-dependent manners. The intensity of the peroxynitrite spectrum was also markedly reduced in the presence of 3-nitrotyrosine in the spectrophometric assay. However, there was no attenuation of the 3-nitrotyrosine signal in the HPLC assay after mixing with peroxynitrite. The interaction of 3-nitrotyrosine and hypochlorous acid (HOCl) was also studied via the chemiluminescence assay, where the HOCl-induced responses were markedly inhibited by 3-nitrotyrosine. These results suggest that caution should be taken when studying the levels or interactions of 3-nitrotyrosine.