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Proliferace a dynamika tkání během vývoje zubů a jim pribuzných patrových lišt
 Rothová, Michaela ; Peterková, Renata (advisor) ; Matalová, Eva (referee) ; Černý, Robert (referee)
My PhD thesis has addressed specific questions regarding cell proliferation and tissue dynamics in three key areas of craniofacial development: during suppression and revitalization of tooth buds that develop in the mouse embryonic dentition as rudiments of lost premolars; during dental papilla and follicle formation of the first mouse molar; and during origin of palatal rugae on the mouse hard palate. By evaluation of cell proliferation, we recorded a change in the proliferation pattern along the cheek region of the mandible between less and more advanced embryos at embryonic day 13.5. Thus during the time period, when the development of the large mouse rudimental premolar primordium (R2) is stopped, we showed that the arrest of the rudiment R2 is caused by exhibiting low rate of cell proliferation and high rate of apoptosis. When Sprouty gene signalling is disrupted, the premolar primordium shows rates of proliferation and apoptosis similar to the growing first molar. The R2 subsequently revitalizes and develops into a supernumerary tooth in front of the first molar. Furthermore, we discovered that the dental mesenchyme is very dynamic tissue during bud and cap stages of tooth development and that the dental papilla of the first molar originates only from a restricted region of the dental...
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