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Isolation, Processing and Analysis of Murine Gingival Cells
Published on: July 2, 2013
Immunohistochemical analysis of Langerhans cells in chronic gingivitis using anti-CD1a antibody
Shweta Jaitley1, Sriram Gopu2, Saraswathi T Rajasekharan3
1Department of Oral Pathology and Microbiology, Kanti Devi Dental College and Hospital, Mathura, Uttar Pradesh, India.
Insights
Langerhans cells (LCs) increase in density and shift to deeper layers in chronic gingivitis, suggesting adaptation. Younger individuals show more LCs in superficial layers.
Area of Science:
- Oral immunology
- Dermatology
- Cell biology
Background:
- Langerhans cells (LCs) are critical antigen-presenting cells (APCs) initiating immune responses.
- LCs in gingival epithelium may influence gingivitis development.
- Understanding LCs in gingivitis is key to immune response modulation.
Purpose of the Study:
- Analyze LC density, distribution, and morphology in chronic gingivitis versus normal gingiva.
- Compare LC characteristics across different age groups.
- Elucidate the role of LCs in the pathogenesis of chronic gingivitis.
Main Methods:
- Immunohistochemistry (IHC) using anti-CD1a antibody on gingival tissue samples.
- Quantitative analysis of LC density in normal (n=10) and chronic gingivitis (n=30) groups.
- Statistical comparison using Mann Whitney U and Kruskal-Wallis tests.
Main Results:
- Significantly higher LC density observed in chronic gingivitis compared to normal gingiva.
- Younger individuals exhibited more LCs, primarily in superficial epithelial layers.
- Chronic gingivitis showed LCs migrating to deeper epithelial layers compared to normal gingiva.
Conclusions:
- LCs display altered number, location, and morphology in chronic gingivitis.
- These changes indicate LCs adapt their function during chronic gingivitis.
- LCs play a dynamic role in the immune response to gingivitis.
Background:
The Langerhans cells (LCs) are dendritic cells (DCs) which belong to the group of antigen presenting cells (APCs). Their function is to recognize the antigen, capture it, and present it to the T lymphocytes; thus initiating an early immune response. The antigen presenting functional LCs may play an important part in initiation and development of gingivitis. The aim of this study was to analyze the density, intraepithelial distribution, and morphology of LCs in gingival epithelium among different age groups with chronic gingivitis and to compare it with that of normal gingiva.
Materials And Methods:
Immunohistochemistry (IHC) was performed to study LCs in normal gingival epithelium (n = 10) and gingival epithelium in chronic gingivitis (n = 30) using anti-CD1a antibody. Mann Whitney U test was performed to compare the density of LCs in normal gingiva with chronic gingivitis. The distribution of LCs in various layers of the epithelium within the three age groups was analyzed using Kruskal-Wallis test. P value less than 0.05 was considered as significant.
Results:
The density of LCs in chronic gingivitis was significantly higher then that of normal gingiva. Comparing different age groups, the younger individuals had more number of LCs which were located in the superficial layers of gingival epithelium. In chronic gingivitis, higher number of LCs were located in deeper layers when compared with that of normal gingiva. Three morphological types of CD1a positive LCs were observed in normal gingiva, out of which the density of LCs with branched dendritic processes was highest in normal gingiva.
Conclusion:
The LCs showed variable number, location, and morphology which indicated their adaptation for function in chronic gingivitis.
