Neuroactive substances in the developing dorsomedial telencephalon of the pigeon (Columba livia): differential distribution and time course of maturation

The Journal of Comparative Neurology
J T ErichsenP Bagnoli

Abstract

The avian hippocampal formation has previously been shown to contain many of the same neurotransmitters and related enzymes that are found in mammals. In order to determine whether the relatively delayed development of the mammalian hippocampus is typical of other vertebrates, we investigated the maturation of a variety of neuroactive substances in the hippocampal formation of the homing pigeon. The distribution of two transmitter-related enzymes, choline acetyltransferase (ChAT) and tyrosine hydroxylase (TH), the neurotransmitter GABA, and four neuropeptides (substance P, enkephalin, neuropeptide Y, and somatostatin) was studied by immunohistochemistry in the developing hippocampal complex. The pattern and/or the time course of changes in the distribution of immunoreactivity varied among the different neuroactive substances examined. Immunoreactivity to ChAT and TH was found exclusively in fibers and terminal-like processes, whereas GABA and peptide immunoreactivity was seen in cells and neuropil. Quantitative differences in the density, number, and size of stained cells were assessed by a computer-assisted image analyzer. For the majority of the substances, developmental patterns in the distribution of immunoreactivity differ...Continue Reading

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Citations

Aug 14, 2013·Journal of Biosciences·Sraboni ChaudhuryShashi Wadhwa
Feb 16, 1995·Brain Research. Developmental Brain Research·G CasiniP Bagnoli
Jan 14, 2003·Brain Research. Developmental Brain Research·Jesús M LópezAgustín González
Sep 4, 1999·Behavioural Brain Research·S Watanabe
Apr 27, 2011·Proceedings of the National Academy of Sciences of the United States of America·Daisuke H TanakaKazunori Nakajima
Oct 22, 2002·The Journal of Comparative Neurology·Jesús M LópezAgustín González
Jan 2, 2003·The Journal of Comparative Neurology·Dragica Kovjanic, Christoph Redies
Apr 27, 2002·The Journal of Comparative Neurology·Yasuro AtojiYoshitaka Suzuki
Sep 4, 1995·The Journal of Comparative Neurology·T ShimizuH J Karten

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