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|Type:||Artigo de periódico|
|Title:||Expression And Activity Of Matrix Metalloproteinase-2 (mmp-2) In The Development Of Rat First Molar Tooth Germ.|
de Andrade C.R.
de Almeida O.P.
|Abstract:||Tooth germ development is associated with morphological and biochemical changes of the dental papilla and enamel organ. Enzymes with gelatinolytic activities were studied by semiquantitative reverse transcriptase-polymerase chain reaction (RT-PCR) and enzymography in tooth germ of newborn to 15-day-old rats. Three major bands with gelatinolytic activity were detected at all periods and characterized as the latent and active forms of MMP-2 using their molecular weight and activity dependent on Zn++ and Ca++ ions as criteria. Expression and activity of MMP-2 increased progressively from 0 to 15 days after birth. Mechanical separation of the tooth germ from 10-day-old rats showed that the gelatinolytic activity was localized mainly in the dental papilla and not the dental organ. These data indicate that the expression and activity of MMP-2 varies during the development and maturation of rat first molar tooth germ.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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