2Semenov Institute of Chemical Physics, Russian Academy of Sciences, ul. Kosygina 4, 119991 Moscow, Russia
* To whom correspondence should be addressed.
Received April 26, 2010; Revision received July 6, 2010
Introduction of the plastoquinone derivative 10-(6′-plastoquinonyl)decyltriphenylphosphonium (SkQ1) into male Wistar rats once a day for two weeks in doses of 25 and 250 nmol/kg led to elevation of 17β-estradiol level in blood serum by 33 and 41%, respectively. At the same time, nitrate and nitrite contents in the rat blood serum increased by 49 and 34%, respectively. ESR spectroscopy with diethyldithiocarbamateiron complex as a spin trap showed more than twofold increase in NO production in lungs, but not in blood, liver, and intestines, following the SkQ1 daily introduction at a dose of 25 nmol/kg.
KEY WORDS: SkQ1, penetrating cations, steroid hormones, estradiol, nitrate, nitrite, nitric oxide