Localization of Calbindin-D28k and Calretinin in the Brain of Dermophis Mexicanus (Amphibia: Gymnophiona) and Its Bearing on the Interpretation of Newly Recognized Neuroanatomical Regions
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作者:
Morona, Ruth
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Univ Complutense Madrid, Fac Biol, Dept Cell Biol, Madrid, SpainUniv Complutense Madrid, Fac Biol, Dept Cell Biol, Madrid, Spain
Morona, Ruth
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Maria Lopez, Jesus
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Univ Complutense Madrid, Fac Biol, Dept Cell Biol, Madrid, SpainUniv Complutense Madrid, Fac Biol, Dept Cell Biol, Madrid, Spain
Maria Lopez, Jesus
[1
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Gonzalez, Agustin
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Univ Complutense Madrid, Fac Biol, Dept Cell Biol, Madrid, SpainUniv Complutense Madrid, Fac Biol, Dept Cell Biol, Madrid, Spain
The analysis of the distribution of the calbindin-D28k and calretinin immunoreactive (CBir and CRir) systems recently described in the brain of anuran and urodele amphibians was very useful for the interpretation of many otherwise indistinct brain regions and cell masses. In the present study we have followed a similar approach to investigate the distribution of CBir and CRir cell bodies and fibers in the brain of Dermophis mexicanus, a member of the much neglected third amphibian order of gymnophionans. The pattern of distribution obtained showed particular characteristics in Dermophis, such as the existence of abundant CRir elements in the olfactory bulbs and CBir and CRir cell populations in pallial areas. The distinct distribution of the two proteins allowed the tentative identification of currently described subregions, mainly in the amygdaloid complex and hypothalamic areas. The analysis of the diencephalon and brainstem distribution framed in the neuromeric model highlighted common traits with other amphibians but also specific features. Therefore, the immunohistochemical detection of calcium-binding proteins has served to discern cell populations and has helped to demonstrate neuronal heterogeneity. However, it should be pointed out that a straightforward comparison based only on the presence of these proteins should not be made due to the great variability observed in well-established homologous regions in the brain of different vertebrates, as evidenced within the class Amphibia. Copyright (C) 2011 S. Karger AG, Basel
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Univ Complutense, Dept Cell Biol, Fac Biol, ES-28040 Madrid, SpainUniv Complutense, Dept Cell Biol, Fac Biol, ES-28040 Madrid, Spain
Morona, Ruth
Northcutt, R. Glenn
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Univ Calif San Diego, Scripps Inst Oceanog, Lab Comparat Neurobiol, La Jolla, CA 92093 USA
Univ Calif San Diego, Sch Med, Dept Neurosci, La Jolla, CA 92093 USAUniv Complutense, Dept Cell Biol, Fac Biol, ES-28040 Madrid, Spain
Northcutt, R. Glenn
Gonzalez, Agustin
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Univ Complutense, Dept Cell Biol, Fac Biol, ES-28040 Madrid, SpainUniv Complutense, Dept Cell Biol, Fac Biol, ES-28040 Madrid, Spain