An Ultrastructural Study of Palatal Fusion in Rat Embryos

تکامل جنینی کام سخت در موش صحرائی

ABSTRACT: In order to study the development of the hard palate, 31 rat embryos were sacrified at daily intervals from 13 to 19 days of gestation .Embryos' heads were sectioned serially and stained with H.E, trichrome masson's paraldehyde fuchsin. SEIT The results were as follow: 1- The palatal shelves were observed in the medial side of the maxillary processes as two bulged prominence on 13 d...

The Effects of Caffeine on the Development of the Palat

ABSTRACT The Purpose of this research was to study the effects of caffeine on the development of the palate. Since the development of palatal shelves from the 13th day starts by the growth of palatal shelves and the fusion of them occurs in the 16th day. After choosing wistar rat and coupling them monogamously, we determined pregnancy zero day and placed them in the control and test groups. ...

The Development in Vitro and in Vivo of Fusion of the Palatal Processes of Rat Embryos.

Histopathological findings of cleft palate in rat embryos induced by triamcinolone acetonide.

Triamcinolone acetonide (TAC), a synthetic glucocorticoid, induces cleft palate resulting from poor development of palatal shelves in mice. However, TAC has no effect on medial edge epithelial cells (MEE cells) in secondary palatal shelves. In the present study, we examined the relationship between the pathogenesis of cleft palate and the effects on MEE cells and palatal mesenchymal cells in ra...

In vitro development of palatal tissues from embryonic mice. I. Differentiation of the secondary palate from 12-day mouse embryos.

Single palatal processes or homotypic paired palatal processes from 12-day mouse embryos (strain C57Bl) were grown in organ culture on Millipore filters. The epithelium along the medial edge of each palatal process became disrupted, and, by 72 hours of culture, paired palatal processes achieved mesenchymal fusion at the site of disruption. The nasal epithelium of paired palatal processes became...