Scanning Electron Microscopic Observations of the Selective Habitation of Bacteria on the Lingual Mandibular Gingiva of the Rat

Kaster, A G; Cameron, Ivan L.

doi:10.1177/00220345800590020701

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“…Loss of eeli cohesion with the formation of intercellular clefts between keratinized cells having a microplicated surface all adds to the facilitation of colonization and initial intercellular pseudohyphal intrusion. Interestingly, these areas belonging to the less densely keratinized type are also selective sites for habitation of various bacteria (1,9,10). It seems therefore very likely that epithelial surface architecture and pattern of keratinization are among the factors governing preferential colonization and initial intraepithelial penetration of oral microorganisms.…”

Section: Discussionmentioning

confidence: 99%

“…Selective colonization of microorganisms in the rat mucosa has been described before. For example, selective habitation of various bacteria on rat tongue papillae (1,9) and lingual mandibular gingiva (10) has been demonstrated and these authors have also suggested it to be related to the pattern of keratinization. To elucidate the relationship between sites of Candida infection, the pattern of keratinization and epithelial surface morphology a correlative study of rat oral mucosal surface characteristics using scanning electron microscopy (SEM) and light microscopy (LM), was undertaken.…”

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confidence: 99%

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Correlative light microscopic and scanning electron microscopic study of completely and incompletely orthokeratinized rat oral epithelium

Philipsen¹,

Gleaton-Jones

Fisker³

1982

European J Oral Sciences

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– Using light microscope (LM) and scanning electron microscope (SEM) a study of the surface morphology of rat oral epithelium was undertaken. A good correlation was found between the LM and SEM findings in the demonstration of the characteristic differences in surface structure between completely and incompletely orthokeratinized areas of the rat oral epithelium. Completely keratinized epithelium (hard palate and attached gingiva) shows a surface layer of orderly arranged, closely approximated and overlapping cells. The individual cell surface shows a honeycomb pattern of interconnecting ridges surrounding depressions or micropits. Incompletely keratinized epithelium (buccal mucGsaT alveolar sulci, gingival crest and interpapillary area of the dorsum of the tongue) shows a very uneven, corrugated surface layer. There is considerable loss of cell cohesion with the formadoo of wide intercellular clefts. The individual cell surface is characterized by microplicatioris of irregular size and arrangement. The findings of the present investigation are discussed in the light of an idea previously put forward by the authors that a correlation exists between surface morphology of the keratinized rat oral mucosa and colonization and penetration of Candida organisms in experimental candidosis.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%