NDLI: Interaction of neuronal NOS and catecholamines in regulation of expression of proteins of apoptosis by vasopressinergic hypothalamic neurons

Content Provider	Springer Nature Link
Author	Chernigovskaya, E. V. Yamova, L. A. Atochin, D. Huang, P. Glazova, M. V.
Copyright Year	2011
Abstract	The work deals with studies on vasopressinergic neurons of hypothalamic supraoptic and paravenricular nuclei in the wild type mice and the neuronal nitric oxide synthase (nNOS) in the gene knockouted mice at a decrease of the brain catecholamine (CA) level caused by administration of the blocker of activity of tyrosine hydroxylase α-methyl-paratyrosine (α-MPT) and at the CA level decrease on the background of functional activity of the vasopressinergic neurons caused by dehydration of animals. There were analyzed changes in the number of neurons in the magnocellular hypothalamic nuclei expressing proapoptotic proteins caspase-8 and caspase-9, p53, and antiapoptotic protein Bcl-2. Disturbance of the CAergic innervation was shown to be a strong damaging factor leading to apoptosis of neurons regardless of the presence of nNOS in the cells. However, at disturbance of the CAergic innervation due to the 5-day mouse dehydration, no death of neurons by apoptosis was revealed. Thus, it is possible that functional activation prevents the hypothalamic vasopressinergic neurons from death at a decrease of the CA level in brain. The main difference of the nNOS gene knockouts is the absence of activation of the Bcl-2 expression under all used actions. This confirms our suggestion about interaction of CA and NO in triggering of expression of the antiapoptotic protein Bcl-2.
Starting Page	275
Ending Page	283
Page Count	9
File Format	PDF
ISSN	00220930
Journal	Journal of Evolutionary Biochemistry and Physiology
Volume Number	47
Issue Number	3
e-ISSN	16083202
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2011-08-05
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	catecholamines NO-synthase hypothalamus proapoptotic proteins Evolutionary Biology Animal Physiology Biochemistry
Content Type	Text
Resource Type	Article
Subject	Physiology Biochemistry Ecology, Evolution, Behavior and Systematics

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