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Estudio neuroanatómico de la región preóptica en el pez cebra

Neuroanatomical study of the preoptic region in zebrafish
Authors: Palla Pérez, Sandra;

Estudio neuroanatómico de la región preóptica en el pez cebra

Abstract

[Resumen] La distribución de la proteína quinasa dependiente de ciclina-2 (Cdk2) ha sido estudiada en el encéfalo del pez cebra (adulto y etapas larvarias) mediante el empleo de técnicas inmunohistoquímicas con el fin de realizar un estudio neuroanatómico del área preóptica. Además se ha testado la efectividad del anticuerpo anti-Cdk2 como marcador de proliferación celular durante el desarrollo larvario. Los resultados obtenidos indican que el anticuerpo anti-Cdk2 reconoce varias poblaciones de neuronas totalmente diferenciadas tanto en el adulto como en la larva, concretamente en el núcleo preóptico magnocelular y en el cerebelo (células de Purkinje). Las células inmunorreactivas a la Cdk2 (Cdk2-ir) del núcleo preóptico magnocelular se caracterizan por presentar distintos tamaños, alcanzando sus axones mayoritariamente la neurohipófisis a través del tracto preóptico-hipofisario. Además, en el adulto, el anticuerpo también reconoce células de la glía. También se ha comparado el patrón de expresión de la Cdk2 con el de la calretinina, proteína citosólica ligante de calcio que reconoce distintas poblaciones en el área preóptica. Los resultados obtenidos revelaron que el anticuerpo frente a la calretinina reconoce células en el núcleo preóptico parvocelular y alguna célula en el preóptico magnocelular, sin que se observe colocalización con la Cdk2. Por tanto, los resultados obtenidos evidencian que el anticuerpo frente a la Cdk2 es un buen marcador de poblaciones del área preóptica.

[Abstract] In order to perform a neuroanatomical study of the preoptic area, we have studied the distribution of the Protein-dependent kinase 2 (Cdk2) in the brain of zebrafish (adult and larval stages) by using immunohistochemical techniques. Furthermore, we have tested the effectiveness of anti-Cdk2 antibody as a marker for cell proliferation during larval development. Our results indicate that anti-Cdk2 antibody recognizes several populations of differentiated neurons both in the adult and larvae, particularly in the magnocellular preoptic nucleus and the cerebellum (Purkinje cells). Cdk2 immunoreactive cells (Cdk2-ir) in the magnocellular preoptic nucleus show different sizes; their axons reach mainly the neurohypophysis through the preoptic-pituitary tract. Furthermore, the antibody also recognizes glia in the adult. In addition, we compared the expression pattern of Cdk2 with that of calretinin, a calcium binding protein that recognizes different populations in the preoptic area. Our results revealed that calretinin antibody recognizes several cells in the parvocellular preoptic nucleus and some in the magnocellular preoptic nucleus; colocalization with Cdk2 was not observed. Therefore, our results show that Cdk2 antibody is a good marker for populations of the preoptic area.

Traballo fin de grao (UDC.CIE). Bioloxía. Curso 2013/2014

Country
Spain
Related Organizations
Keywords

Cdk2, Magnocellular preoptic nucleus, Teleósteos, Teleost, Pez cebra, Área preóptica, Núcleo preóptico magnocelular, Preoptic area, Immunohistochemistry, Zebrafish, Inmunohistoquímica

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
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