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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Molecular interaction of developing axons with the surface ectoderm
 Matějček, Miroslav ; Machoň, Ondřej (advisor) ; Rozbeský, Daniel (referee)
The complex of cranial nerves consists of twelve pairs of nerves, which connect organs of the head with the central nervous system. One of the organs, which are innervated by cranial nerves are whiskers (also known as vibrissae). Whiskers are special type of mammalian hairs, which are innervated by the infraorbital branch of trigeminal nerve. These hairs provide information necessary for orientation in terrain, localisation of prey and locomotion. The potential role of axons in whiskers development has been discussed for many years. However, this hypothesis has not yet been confirmed. In this research we have used murine strains Neurog1 KO and Meis2 cKO with either abnormal or completely missing trigeminal nerve. Thanks to the analysis of embryonic development in these strains we have denied our hypothesis, that axons of trigeminal nerve serve a role in initiation of whisker follicles. In Meis2 cKO embryos we observed malfunction in formation of whisker follicles. The expression of Meis2 during the development of whiskers has an influence on various signalling cascades including Fgf, Shh and Bmp. In regards to changes in mentioned signalling cascades we suggest that the whisker follicle development is altered between the first dermal and first epidermal signal.
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The role of neural crest cells in development of the head and the heart
 Matějček, Miroslav ; Machoň, Ondřej (advisor) ; Černý, Robert (referee)
Neural crest (NC) is a structure arising from the neural plate borders during the the process of neurulation. From there neural crest cells migrate and differentiate into broad types of cells and tissues almost all over the body. These cells contributes on the building of skull, jaws and many other structures. The aim of this thesis is to summarize recent findings about neural crest cells and their impact during the development of head and heart, their migration and differentiation in these part of the body with a special aim to gene regulatory network and signals from surrounding cells. Study of these cells is key for elucidating genetic mutations or cancer.
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See also: similar author names
1 MATĚJČEK, Michal
4 Matějček, Martin
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