Determination of reactive oxygen and nitrogen species in rat aorta using the dichlorofluorescein assay

被引：18

作者：

Korystov, Yuri N. ^{[1
]}

Emel'Yanov, Maksim O. ^{[1
]}

Korystova, Antonina F. ^{[1
]}

Levitman, Mariya K. H. ^{[1
]}

Shaposhnikova, Vera V. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Theoret & Expt Biophys, Pushchino 142290, Moscow Region, Russia

来源：

FREE RADICAL RESEARCH | 2009年 / 43卷 / 02期

关键词：

Ageing; aorta; dichlorofluorescein; reactive nitrogen species; reactive oxygen species; OXIDATIVE STRESS; VASCULAR-DISEASE; NITRIC-OXIDE; 2'; 7'-DICHLOROFLUORESCIN; PROBES; 7'-DICHLORODIHYDROFLUORESCEIN; PEROXYNITRITE; STIMULATION; FLUORESCENT; DYSFUNCTION;

D O I：

10.1080/10715760802644686

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A method for the determination of reactive oxygen species (ROS) and reactive nitrogen species (RNS) in macroscopic sections of vessels has been developed on the basis of the dichlorofluorescein (DCF) assay. DCF was measured by fluorescence in extracts of vessels. The main artifact of the method is the oxidation of dichlorodihydrofluorescein (DCFH2) which is released from vessels together with DCF during the extraction procedure. This problem was resolved by decreasing pH during the extraction. The optimal conditions and the time for aorta incubation with DCFH2-DA and for the extraction of DCF from aorta have been determined. The ROS/RNS production in different aorta segments and the dependence of ROS/RNS production on rat age have been studied. It was shown that thoracic aorta sections produced the same amounts of ROS/RNS and the intermediate between the thoracic and the abdominal aorta part produced ROS and RNS by 14% more than the thoracic aorta. It was found that ROS/RNS production in aorta increases with rat age: the doubling time of ROS/RNS production rate is 113 days from birth.

引用

页码：149 / 155

页数：7

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