Glycine-immunoreactive neurons in the brain of a shark (Scyliorhinus caniculaL.)
| Autor: | Isabel Rodríguez-Moldes, Fátima Adrio, Ramón Anadón |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Cerebellum
animal structures Glycine Cell Count Biology Reticular formation 03 medical and health sciences Diencephalon 0302 clinical medicine medicine Animals 14. Life underwater Pretectal area gamma-Aminobutyric Acid 030304 developmental biology Neurons 0303 health sciences integumentary system Cerebrum General Neuroscience Brain Anatomy Olfactory bulb medicine.anatomical_structure nervous system embryonic structures Sharks Raphe nuclei Nucleus 030217 neurology & neurosurgery |
| Zdroj: | Journal of Comparative Neurology |
| ISSN: | 0021-9967 |
| DOI: | 10.1002/cne.23332 |
| Popis: | The glycinergic cell populations in the brain of the lesser spotted dogfish were studied by a glycine immunofluorescence method. Numerous glycine-immunoreactive (Gly-ir) neurons were observed in different brain nuclei. In the telencephalon, Gly-ir cells were observed in the olfactory bulb, telencephalic hemispheres, and preoptic region. In the hypothalamus, cerebrospinal fluid-contacting Gly-ir neurons were observed in the lateral and posterior recess nuclei. Coronet cells of the saccus vasculosus were Gly-ir. In the diencephalon, Gly-ir neurons were observed in the prethalamus and pretectum. In the midbrain, both the optic tectum and lateral mesencephalic nucleus contained numerous Gly-ir neurons. In the cerebellum, many Golgi cells were Gly-ir. In the rhombencephalon, Gly-ir cells were observed in the medial and ventral octavolateral nuclei, vagal lobe, visceromotor nuclei, and reticular formation, including the inferior raphe nucleus. In the spinal cord, some neurons of the marginal nucleus and some cells of the dorsal and ventral horns were Gly-ir. Comparison of dogfish Gly-ir cell populations with those reported for the sea lamprey, Siberian sturgeon, and zebrafish revealed some shared features but also notable differences. For example, Gly-ir cells were observed in the dogfish cerebellum, unlike the case in the Siberian sturgeon and zebrafish, whereas the absence of Gly-ir neurons in the isthmus is shared by all these species, except for lampreys. Gly-ir populations in the dogfish hypothalamus and telencephalon are notable in comparison with those of the other jawed vertebrates investigated to date. Together, these results reveal a complex and divergent evolution of glycinergic systems in the major groups of fishes. |
| Databáze: | OpenAIRE |
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