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 GLUTATIONE POSTCONDITIONING ATTENUATES MYOCARDIAL ISCHEMIAREPERFUSION INJURY IN RATS VIA INHIBITION OF MPTPR.A. Fedichkina1, Yu.V. Goshovska1, K.V. Voytko2, I.Yu. Okhai1, V.F. Sagach1 
DOI: https://doi.org/10.15407/fz67.01.003Bogomoletz Institute of physiology NAS of Ukraine, Kyiv, UkraineChuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine 
  
 
 
Abstract
The effect of post-conditioning with reduced glutathione
(GSH, hepaval Italy/Ukraine) on myocardial contractility,
oxygen cost, and mitochondrial factor release as a marker of
mitochondrial permeability transition pore (MPTP) opening
was studied in ischemia–reperfusion model at Langendorffisolated rat heart. It was found that reperfusion with KrebsHenseleit solution containing GSH provided more
complete restoration of the left ventricle developed pressure
(70.2 and 56% at 5th and 40th min of reperfusion against
23.6 and 30.9% in control, P < 0.05 for both), reduced oxygen
cost of myocardial work (184 and 157% at 5th and 40th min
of reperfusion against 413 and 216% in control, P < 0.05 for
both), and decreased the value of mitochondrial factor by 3
times, indicating inhibition of MPTP. It was shown that the
level of GSH in cardiac tissues was significantly increased by
1.5 times 30 min after administration of hepaval (52 mg per kg)
intraperitoneally, indicating accumulation of GSH from the
bloodstream. Thus, we have shown that post-conditioning with
GSH had cardioprotective effect, inhibited the formation of
MPTP and can be used as a tool for correction of post-ischemic
disturbances of heart function.
 
Keywords: 
ischemia; post-conditioning; glutathione; heart; oxygen cost of work; mitochondrial permeability transition pore.
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