Ontogenetic features of redox reactions in the myocardium of geese

Under conditions of physiological stress of different aetiologies,
cells of any organism undergo compensatory metabolic changes.
The
specificity of such changes primarily depends on functional
and histochemical features of the tissues of the body. The
purpose
of this work was to describe the functioning of the main compo
-
nents of the oxidation-reduction system, (ORS, the Krebs cycle,
and the antioxidant system) in the myocardium of geese under
conditions of the physiological stress occurring during the tran
-
sition from the embryonic to postnatal development. It has been
experimentally established that in the second half of geese em
-
bryogenesis, the content of short-chain fatty acids is significantly
increased and the content of long-chain polyunsaturated fatty
acids in their myocardium decreases. During the first two weeks
of the postnatal period, there are reversible changes in the fatty
acid composition of this tissue. The second half of the embryo
-
genesis is characterized by the activation of dehydrogenases of
the Krebs cycle in the low variability of antioxidant enzyme ac
-
tivity. At the same time, the experiment demonstrated an increase
in the antioxidant activity coefficient, with the exception of its
significant reduction on the first day of postnatal ontogenesis.
The functioning of the ORS in the myocardium of geese is char
-
acterized by the presence of correlations between the nature of
the changes of 19 investigated components (dehydrogenases of
the Krebs cycle, antioxidant enzymes, lipid peroxidation prod
-
ucts, antioxidant activity coefficient, fatty acids, their total content
and unsaturation) and structuring of the system into two clusters.