[Expression patterns of amelogenin and enamelin in developing mouse tooth germs].
Zhonghua Kou Qiang Yi Xue Za Zhi
; 47(3): 173-6, 2012 Mar.
Article
em Zh
| MEDLINE
| ID: mdl-22800672
ABSTRACT
OBJECTIVE:
To invesitgate the expression patterns of amelogenin and enamelin in the developing tooth germs.METHODS:
Mandible sections of postnatal day 1, 3, 7 and 14 mouse were prepared, immunohistochemical analysis and reverse transcriptase polymerase chain reaction (RT-PCR) were performed to detect the expression patterns of amelogenin and enamelin in mandibular first molars.RESULTS:
Amelogenin was observed in the cytoplasm of secretory ameloblasts and the whole enamel matrix layer. It was also transiently expressed in the odontoblasts of postnatal day 1 molars. Enamelin proteins were observed in the enamel layer deposited by secretory ameloblasts, especially intense beneath the ameloblast process and dentino-enamel junction. The mRNA levels of both amelogenin and enamelin were highest on postnatal day 7 (the ratio to glyceraldehyde phosphate dehydrogenase of amelogenin and enamelin 0.813 ± 0.085 and 0.799 ± 0.064, respectively, P < 0.05).CONCLUSIONS:
Amelogenin and enamelin were enamel matrix proteins predominately expressed by secretory ameloblasts. The temporal-spatial expression patterns of amelogenin and enamelin indicate the important roles they played in amelogenesis and biomineralization.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Germe de Dente
/
Proteínas do Esmalte Dentário
/
Amelogenina
/
Amelogênese
Idioma:
Zh
Ano de publicação:
2012
Tipo de documento:
Article