Evaluation of collagen in connective tissue walls of odontogenic cysts -A histochemical study

Ruchieka Vij, Hitesh Vij, Nirmala N. Rao

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Background: The purpose of this study was to evaluate the nature of collagen in the connective tissue walls of odontogenic cysts, like the odontogenic keratocyst (OKC), dentigerous cyst and radicular cyst using picrosirius red stained sections. Furthermore, it was intended to assess if the capsular connective tissue can affect the nature of overlying epithelium, thus emphasizing the role of epithelial-mesenchymal interactions in biological behaviour of the cysts. Materials and method: The material for the study included 51 formalin-fixed paraffin-embedded tissue blocks (15 odontogenic keratocyst, 15 dentigerous cysts, 15 radicular cysts and four normal mucosa and two dental follicular tissue as controls), retrieved from the Department of Oral Pathology and Microbiology, MCODS, Manipal. Tissue blocks were sectioned at 5-μm thickness, stained with picrosirius red stain and observed with polarization and light microscopy. Results: Few sections of OKC and dentigerous cyst exhibited greenish-yellow birefringence in sub-epithelial region, whereas others showed a yellowish-orange birefringence under polarization microscopy. Most radicular cysts had yellowish-orange to orange birefringence. Shift in colour in case OKC and dentigerous cyst was attributed to the presence of inflammation in those sections. These regions also exhibited either a change in phenotype or thickness of overlying epithelium. Conclusion: This technique can be used to study the nature of collagen fibres in odontogenic cyst walls. Further studies with an increased sample size and using various epithelial and mesenchymal markers and ssDNA antibodies should be carried out to confirm the effect of epithelial-mesenchymal interactions on the nature of epithelium of odontogenic cysts.

Original languageEnglish
Pages (from-to)257-262
Number of pages6
JournalJournal of Oral Pathology and Medicine
Volume40
Issue number3
DOIs
Publication statusPublished - 01-03-2011

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Odontogenic Cysts
Connective Tissue
Collagen
Dentigerous Cyst
Radicular Cyst
Birefringence
Polarization Microscopy
Epithelium
Oral Pathology
Microbiology
Paraffin
Sample Size
Formaldehyde
Cysts
Tooth
Mucous Membrane
Coloring Agents
Color
Inflammation
Phenotype

All Science Journal Classification (ASJC) codes

  • Cancer Research
  • Pathology and Forensic Medicine
  • Otorhinolaryngology
  • Oral Surgery
  • Periodontics

Cite this

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abstract = "Background: The purpose of this study was to evaluate the nature of collagen in the connective tissue walls of odontogenic cysts, like the odontogenic keratocyst (OKC), dentigerous cyst and radicular cyst using picrosirius red stained sections. Furthermore, it was intended to assess if the capsular connective tissue can affect the nature of overlying epithelium, thus emphasizing the role of epithelial-mesenchymal interactions in biological behaviour of the cysts. Materials and method: The material for the study included 51 formalin-fixed paraffin-embedded tissue blocks (15 odontogenic keratocyst, 15 dentigerous cysts, 15 radicular cysts and four normal mucosa and two dental follicular tissue as controls), retrieved from the Department of Oral Pathology and Microbiology, MCODS, Manipal. Tissue blocks were sectioned at 5-μm thickness, stained with picrosirius red stain and observed with polarization and light microscopy. Results: Few sections of OKC and dentigerous cyst exhibited greenish-yellow birefringence in sub-epithelial region, whereas others showed a yellowish-orange birefringence under polarization microscopy. Most radicular cysts had yellowish-orange to orange birefringence. Shift in colour in case OKC and dentigerous cyst was attributed to the presence of inflammation in those sections. These regions also exhibited either a change in phenotype or thickness of overlying epithelium. Conclusion: This technique can be used to study the nature of collagen fibres in odontogenic cyst walls. Further studies with an increased sample size and using various epithelial and mesenchymal markers and ssDNA antibodies should be carried out to confirm the effect of epithelial-mesenchymal interactions on the nature of epithelium of odontogenic cysts.",
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Evaluation of collagen in connective tissue walls of odontogenic cysts -A histochemical study. / Vij, Ruchieka; Vij, Hitesh; Rao, Nirmala N.

In: Journal of Oral Pathology and Medicine, Vol. 40, No. 3, 01.03.2011, p. 257-262.

Research output: Contribution to journalArticle

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