Estudo radioautografico da síntese de dna no epitélio gengival de camundongos Mus musculus II. Influência do sexo
Radioautographic DNA-synthesis study on mice Mus musculus gingival epithelium. II. Sex effect
Tarelho, Z.V.S.; Hetem, S.
Rev. odontol. UNESP, vol.13, nÚnico, p.109-111, 1984
Abstract
Foi estudada a frequência de células que sintetizam DNA na camada basal do epitélio gengival da região do primeiro molar inferior de camundongos de ambos os sexos, jovens e adultos. A freqüência de células marcadas foi determinada, estabeleceu-se a sua proporção e verificou-se que o número de células marcadas é maior nos animais fêmeas, porém, há diferença estatisticamente significante apenas nos animais adultos, a qual, talvez, seja devida ao estrógeno.
Keywords
radioautografia, timidina triciada, epitélio gengival, sexo
Resumo
It was studied the DNA-synthetizing cells frequency in the gingival epithelium basal layer of the first lower molar region in young and adult mice of both sexes, using 3H-thymidine and radioautography. The labeled cells frequency and proportion were determined and the data were statiscally analysed. The labeled cells frequency is higher in female than in male animals, but difference is statiscally significant for adult animals only; this result suggests a hormonal influence. possibly of estrogen on the epithelial tissue.
Palavras-chave
DNA synthesis, radioautography, 3H-thymidine, gingival epithelium, sex
References
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13. YOUNG, W.F. - Mitolic aClivilY in the oral epithelium 01' lhe female rat. .I. Periodunf. Res., 3: 51-62, 1968
2. BULLOUGH, W.S. - A sludy 01' the hormonal relalions 01' epidermal mitolic aClivity in vilro. III. Adrenalin. Exp. Cell Res., 9: lOH-115, 1955.
3. CARTER, S. - The influence 01' oeslrone on lhe division 01' cells. J. Endocrim, 9: 19-29, 1953.
4. CLEATON-.I0NES, P. - Milolic activity in the oral epilhelium 01' lhe albino rats . ./. dento Res., 55: 859-863, 1976.
5. GARGIULLO, A.W.; WENTZ, F.M. & ORBAN, .I. - Mitotic aClivily 01' human oral epilhelium exposed to 30 percenl hidrogen peroxide. Oral Surg., 14:474-492, 1961.
6. HANSEN, E.R. - Milotic aClivity in lhe oral epithelium 01' the rat. Varialions according lO age and time 01' lhe day. Od011l. T., 74: 196-202, 1966.
7. HANSEN, E.R. - MilOlic aClivilY 01' lhe gingival epithelium in colchinized rals. Odunt. T., 74: 229-239, 1966.
8. HANSEN, E.R. - Milolic aClivilY and ccll densities in gingival epithclium of rals. Odo11l. T., 75: 28-32, 1967.
9. MAYER, .I.; MARWAH, A.S. & WINMANN, .J.P. - Milolic rale aI' gingival epilhelium in two age groups. .I. invesl. Derm.. 27: 237-247, 1956.
10. SONI, N.N.; SILBERKWEIT, M. & HA YES, R.L. - PalIem of mitolic activilY and cell densilies in human gingival epilht>lium . .I. Periodont., 36: 15-21,1965.
11. TARELHO, Z. V. da S. & HETEM, S. - ESludo radioautográfico da sinlese de DNA no epilélio gengival de camungondos Museu/us. I. Influência da idade. Rev. Odont. UNESP, 13:105-108, 1984.
12. WENTZ, A.M.; MAIER, A.E. & ORBAN, B. Age changes and sex differences in the clinically "normal" gingival. .I. Periodonl., 23: 13-24, 1952.
13. YOUNG, W.F. - Mitolic aClivilY in the oral epithelium 01' lhe female rat. .I. Periodunf. Res., 3: 51-62, 1968
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