HPLC-MS aided PC12 cell systems: to quantitatively monitor the conversion of nitronyl nitroxide in biological systems with and without NO.

Abstract:

:Nitronyl nitroxides are capable of preventing cells, tissues, and organs from radical-induced damage through scavenging NO˙, ˙O(2)(-) and ˙OH. In order to explore the conversions of nitronyl nitroxides in biological systems with and without NO˙, HPLC-MS aided PC12 cell systems were developed, and the conversions of 2-(3'-nitrophenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl -3-oxide (3-nitro-PTIO), 1-oxyl-2-(3'-nitrophenyl)-4,4,5,5-tetramethylimidazoline (3-nitro-PTI), and 1-hydroxyl-2-(3'-nitrophenyl)-4,4,5,5-tetramethylimidazoline (3-nitro-PTIH) were quantitatively monitored. In these systems 3-nitro-PTIO and 3-nitro-PTI were time-dependently converted to 3-nitro-PTIH, while no conversion of 3-nitro-PTIH was detected. Free radical NO˙ donors (sodium nitroprusside, SNP) accelerated the conversions, but had no effect upon the conversion product. In the in vitro and in vivo assays the 3-nitro-PTIH treated cells and mice exhibited no toxic response.

journal_name

Mol Biosyst

journal_title

Molecular bioSystems

authors

Wang Y,Jiang X,Liu J,Zhao M,Kang G,Wu J,Peng L,Peng S

doi

10.1039/c1mb05037k

subject

Has Abstract

pub_date

2011-05-01 00:00:00

pages

1678-83

issue

5

eissn

1742-206X

issn

1742-2051

journal_volume

7

pub_type

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