NDLI: An increase in the activity of NADPH-dependent O2−-producing and ferrihemoglobin-reducing isoforms of cytochrome b $_{558}$ from membranes, mitochondria, and nuclei of cells of rats subjected to electrical stimulation of the supraoptic and paraventricular hypothalamic nuclei

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An increase in the activity of NADPH-dependent O2−-producing and ferrihemoglobin-reducing isoforms of cytochrome b $_{558}$ from membranes, mitochondria, and nuclei of cells of rats subjected to electrical stimulation of the supraoptic and paraventricular hypothalamic nuclei

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Neurochemical Journal : Volume 4, Issue 1, March 2010

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Neurochemical Journal : Volume 1

An increase in the activity of NADPH-dependent O2−-producing and ferrihemoglobin-reducing isoforms of cytochrome b $_{558}$ from membranes, mitochondria, and nuclei of cells of rats subjected to electrical stimulation of the supraoptic and paraventricular hypothalamic nuclei

Content Provider	Springer Nature Link
Author	Melkonyan, L. G. Simonyan, R. M. Simonyan, G. M. Babayan, M. A. Arakelyan, L. N. Airapetyan, R. L. Simonyan, M. A. Galoyan, A. A.
Copyright Year	2010
Abstract	Electrical stimulation of supraoptic nuclei (SON) and paraventricular nuclei (PVN) of the hypothalamus increases the immunoreactivity of the rat hypothalamus. However, molecular mechanisms of this effect associated with changes in the level of isoforms of cytochrome (cyt) b $_{558}$ in membranes, mitochondria, and nuclei of cells of rat organs (brain, liver, spleen, heart, and kidneys) are unknown. Determination of these factors was the aim of this study. The SON and PVN of the hypothalamus of white mature rats were subjected to electrical stimulation by rectangular electrical impulses. The acidic cyt b $_{558}$ from cell membranes, mitochondria, and nuclei was extracted using ion-exchange chromatography of protein fractions with KM-52 and DE-52 celluloses. The electrical stimulation of the hypothalamus in the majority of cases resulted in an increase in the level of acidic cyt b $_{558}$ in the membranes, mitochondria, and nuclei of cells of all organs studied, especially the spleen. Cytochrome b $_{558}$ along with NADPH-dependent O2−-producing activity also had methemoglobin-reducing activity. On the basis of our results, it is possible to hypothesize that the molecular mechanisms that increase the immunoreactivity of SON and PVN of the hypothalamus are associated with an increase in the endogenous level and activity of isoforms of acidic cyt b $_{558}$ from membranes, mitochondria, and nuclei of cells. These mechanisms may also involve stimulation of the immune system, oxygen homeostasis, genome regulation, and energetic balance in the respiratory chain of mitochondria
Starting Page	133
Ending Page	136
Page Count	4
File Format	PDF
ISSN	18197124
Journal	Neurochemical Journal
Volume Number	4
Issue Number	2
e-ISSN	18197132
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2010-06-23
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	electrical stimulation cytochrome b$_{558}$ cell components Neurosciences
Content Type	Text
Resource Type	Article
Subject	Molecular Biology Biochemistry Cellular and Molecular Neuroscience

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