Neural Regeneration Research ›› 2013, Vol. 8 ›› Issue (1): 13-23.doi: 10.3969/j.issn.1673-5374.2013.01.002

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Features of adult neurogenesis and neurochemical signaling in the Cherry salmon Oncorhynchus masou brain

Evgeniya V. Pushchina1, Dmitry K. Оbukhov2, Anatoly A. Varaksin1   

  1. 1 Laboratory of Cytophysiology, Institute of Marine Biology, Far East Branch, Russian Academy of Sciences, Vladivostok 690059, Russia
    2 St. Petersburg State University, St. Petersburg 199034, Russia
  • Received:2012-08-09 Revised:2012-10-09 Online:2013-01-05 Published:2013-01-05
  • Contact: Evgeniya V. Pushchina, Laboratory of Cytophysiology, A.V. Zhirmunskii Institute of Marine Biology, Far Eastern Branch of Russian Academy of Sciences, Vladivostok, Palchevskogo 17, Vladivostok 690059, Russia,puschina@mail.ru.
  • About author:Evgeniya V. Pushchina☆, Ph.D., D.Sc. Leader Researcher.
  • Supported by:

    This work was supported by a grant from Far Eastern Branch of Russian Academy of Sciences, No. 12-III-А-06-095.

Abstract:

We investigated the distribution of gamma aminobutyric acid, tyrosine hydroxylase and nitric oxide-producing elements in a cherry salmon Oncorhynchus masou brain at various stages of postnatal ontogenesis by immunohistochemical staining and histochemical staining. The periventricular region cells exhibited the morphology of neurons and glia including radial glia-like cells and contained several neurochemical substances. Heterogeneous populations of tyrosine hydroxylase-, gamma aminobutyric acid-immunoreactive, аs well as nicotinamide adenine dinucleotide phosphate diaphorase-positive cells were observed in proliferating cell nuclear antigen-immunoreactive proliferative zones in periventricular area of diencephalon, central grey layer of dorsomedial tegmentum, medulla and spinal cord. Immunolocalization of Pax6 in the cherry salmon brain revealed a neuromeric construction of the brain at various stages of postnatal ontogenesis, and this was confirmed by tyrosine hydroxylase and gamma aminobutyric acid labeling.

Key words: neural regeneration, neurogenesis, teleostei, adult neurogenesis, neurotransmitter signaling, migration, tyrosine hydroxylase, gamma aminobutyric acid, development, Pax6, NADPH- diaphorase, proliferation, grant-supported paper, neuroregeneration