Please use this identifier to cite or link to this item: https://ir.sc.mahidol.ac.th/handle/123456789/537
Title: Distribution of Gaba in the nerve ganglia of haliotis asinina linnaeus
Authors: Chaitip Wanichanon
Keywords: gamma-aminobutyric acid;ganglia;Haliotis asinina;immunohistochemistry;localization
Issue Date: 2013
Citation: กายวิภาคศาสตร์
Series/Report no.: ;59-66
Abstract: Gamma-aminobutyric acid (GABA) is a major neurotransmitter and effective settlement inducer in abalone aquaculture. This study aimed to explore the distribution of GABA within neural tissues of Haliotis asinina. Gamma-aminobutyric acid was found in neuronal cell type 1 of 3 major ganglia (i.e., cerebral, pleuropedal, and visceral ganglia) of both sexes. The distribution of GABA-immunoreactive (-ir) cells in the cerebral ganglion was concentrated mostly in the cortex region of the dorsal horn, whereas it was scattered throughout the pleuropedal ganglion, with more in the upper half. Gamma-aminobutyric acid-ir nerve fibers were found throughout the neuropils of the ganglia. The visceral ganglion had the least numbers of GABA-ir neurons compared with the other 2 ganglia. The cells were distributed mainly in the dorsal horn. We also observed GABA to be colocalized with 2 other neurotransmitters: serotonin (5-HT) and dopamine (DA). In the cerebral ganglion, fluorescence double staining of GABA and 5-HT, and GABA and DA showed immunoreactivity in separate cells and was also colocalized in the same cells. In the pleuropedal ganglion, the staining pattern was similar to the cerebral ganglion, but positive-staining cells were less numerous. In the visceral ganglion, GABA and DA, and GABA and 5-HT were colocalized in the same cell types. Overall, we found that GABAergic cells were most numerous in the cerebral ganglion of H. asinina. Further studies are required to determine the functions of these neurotransmitters in relation to their distribution.
Description: Scopus
URI: https://ir.sc.mahidol.ac.th/handle/123456789/537
ISSN: 07308000
Appears in Collections:Anatomy: International Proceedings

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