alexa New Description of the Rostral Migratory Stream in Adul

Journal of Cell Science and Apoptosis
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Research Article

New Description of the Rostral Migratory Stream in Adult Mice Brains Delineating the Starter of the Stream as an Infundibulum: A New Described Limb, by H&E and Antidoublecortin Antibody

Zainab Zahid Saadoon* and Huda Mahdis Al-Khateeb

College of Medicine Baghdad University, Baghdad, Iraq

*Corresponding Author:
Zainab Zahid Saadoon
College of Medicine Baghdad University
Baghdad, Iraq
Tel: 00964 7700254259
E-mail: [email protected]

Received date: November 14, 2016; Accepted date: January 10, 2017; Published date: January 15, 2017

Citation: Saadoon ZZ, Al-Khateeb HM (2017) New Description of the Rostral Migratory Stream in Adult Mice Brains Delineating the Starter of the Stream as an Infundibulum: A New Described Limb, by H&E and Antidoublecortin Antibody. J Cell Sci Apo 1:101.

Copyright: © 2017 Saadoon ZZ, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Background: Neural stem cells are not confined to the embryonic development of the brain as believed in the past; in contrasts, it continues life- long in the adult mammalian brains even in non-pathological state. Neural stem cells and their progeny, the neuroblasts, are residents in the subventricular zone (SVZ) of the lateral ventricle in the adult mammalian brains. The neuroblasts after they were produced in the SVZ would migrate in a well-defined pathway emerged from the SVZ and directed towards the olfactory bulb (OB). This pathway is called the Rostral Migratory Stream (RMS), and its main component, are the neuroblasts. Aims of study: To trace the chain arrangement of neuroblasts along the RMS, using Hematoxylin and Eosin and the specific marker of the neuroblasts “antidoublecortin antibody”, describing grossly how the pathway emerges from SVZ proceeding rostrally to the OB in the adult mice brains. Materials and methods: Adult mice brains from both brain sexes were used in this experiment to view both coronal and sagittal sections upon which Hematoxylin and Eosin and immunohistochemical staining were exploited. Antidoublecortin antibody, the specific marker of the immature neurons, was used in the immunohistochemical staining of this study. Results: This study revealed clustering of the neuroblasts in the SVZ and while this special arrangement carried out at the SVZ, the neuroblasts changed their arrangement when being traced sagittaly into chain-like strip of cells forming a sigmoidal shape stream. The chain of the neuroblasts in the stream demonstrated changing in shape and direction throughout its length with special arrangement at its starter from the lateral ventricle forming a funnel shape limb before it joined the rest of stream. It delineated here four limbs along its pathway. Conclusion: The neuroblasts take different arrangement through their period of life from their site of origin to their final destination the olfactory bulb through the RMS. In the stream the neuroblasts follow a sigmoidal shape pathway described here as four limbs instead of 3 ones in previous studies. The new described part is the funnel shape limb which is named the infundibulum at which the neuroblasts in the stream starting up their migration from SVZ before they join the next limb, the vertical limb.

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