ZIB

1

Digitale Medien

Eosinophils during developing periodontal disease of rats (1985)

Bertã, J. M. ; Almeida, O. P. ; Nascimento, A. ; [weitere]

Oxford, UK : Blackwell Publishing Ltd

Journal of periodontal research 20 (1985), S. 0

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ISSN: 1600-0765

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Medizin

Notizen: Experimentally provoked gingival inflammation in rats presented eosinophils in the cellular infiltrate. Eosinophil numbers increased progressively to a peak at 30 days, and subsequently there was no quantitative alteration. Initially eosinophils were found in inflammed areas underneath the gingival epithelium and in later periods were more numerous in the deep corium among the collagen fibers. The extracytoplasmic granules were among the collagen fibrils and close to fibroblasts which phagocytosed collagen. It is suggested that eosinophils participate in the experimentally induced periodontitis in rats, and that they can act on the metabolism of rat gingival collagen.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1111/j.1600-0765.1985.tb00829.x

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2

Digitale Medien

Differential proliferation of fibroblasts cultured from hereditary gingival fibromatosis and normal gingiva (1998)

Coletta, R. D. ; Almeida, O. P. ; Graner, E. ; [weitere]

Oxford, UK : Blackwell Publishing Ltd

Journal of periodontal research 33 (1998), S. 0

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ISSN: 1600-0765

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Medizin

Notizen: Hereditary gingival fibromatosis (HGF) is an oral condition characterized by the enlargement of the gingiva of both the maxilla and mandible. To study the cell proliferation index of fibroblasts from HGF and normal gingiva (NG), cell cultures from 4 members of the same family with HGF and from 4 healthy patients were established. Our results obtained from 6 different cell proliferation assays clearly showed that the cell proliferation rate was significantly higher in fibroblasts from HGF than from normal gingiva. HGF and control fibroblasts in subconfluent culture densities were typically spindle, but in saturation density HGF cells were shorter than control cells. These data suggest that the higher proliferative index of HGF fibroblasts possibly has a role in the pathogenesis of gingival outgrowth in HGF patients.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1111/j.1600-0765.1998.tb02346.x

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3

Digitale Medien

Histochemistry, refractometry, and fine structure of excretory globules in larval Malpighian tubes ofMelipona quadrifasciata (Hym., Apoidea) (1969)

Mello, Maria Luiza S. ; Bozzo, L.

Springer

Protoplasma 68 (1969), S. 241-251

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ISSN: 1615-6102

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie

Notizen: Summary The authors have studied excretory globules in the Malpighian tubes ofMelipona larvae. By means of histochemical methods for fats, micro-interferometry and electron microscopy, glycerides surrounded by a lipoprotein or phospholipid layer were tentatively recognized in the globules. They resemble in composition the brochosomes reported in Homoptera and are found in the cell borders and in the lumina of the tubes. Yellow-green autofluorescent granules are seen within the cells, in the honeycomb borders and in the lumina of the tubes. It was not determined whether there are two distinct kinds of globules or only one kind in different physiological stages.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01251612

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