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Isolation and Flow Cytometric Analysis of Human Endocervical Gamma Delta T Cells
Published on: February 6, 2017
Cell-mediated immunity in the course of cervical ectropion
I De Luca Brunori1, V Facchini, M Filippeschi
1Institute of Gynecology and Obstetrics, University of Pisa.
Insights
Asymptomatic ectropion is linked to reduced immune cells (CD4, CD8, CD1) in the cervix, suggesting localized immune deficiency. This cellular immune response reduction may necessitate therapeutic intervention for this cervical lesion.
Area of Science:
- Immunology
- Gynecologic Pathology
- Cellular Biology
Background:
- Ectropion is a common cervical condition.
- The immune response in asymptomatic ectropion is not well understood.
- Human Papillomavirus (HPV) infections and Cervical Intraepithelial Neoplasia (CIN) are associated with immune alterations.
Purpose of the Study:
- To evaluate the cellular immune response in asymptomatic ectropion.
- To phenotype T lymphocytic subpopulations and Langerhans cells in ectropion tissue.
- To investigate potential localized immune deficiency in ectropion.
Main Methods:
- Biopsies were taken from injured and healthy exocervix zones.
- Immunohistochemical analysis using the Avidin-Biotin Complex (ABC) method was performed.
- Monoclonal antibodies were used to identify T helper lymphocytes (CD4), T suppressor lymphocytes (CD8), and Langerhans cells (CD1).
Main Results:
- A reduction in CD4, CD8, and CD1 lymphocytic subpopulations was observed in ectropion zones.
- These immune cell populations were present in normal levels in healthy exocervix zones.
- Findings suggest a localized immune deficiency in ectropion.
Conclusions:
- Ectropion may be associated with a localized immune deficiency, similar to HPV infections and CIN.
- This immune deficiency could impair immuno-surveillance and cell-mediated immune responses.
- Ectropion is considered a potentially unstable lesion requiring therapeutic intervention.
Abstract:
In the present study we evaluated cellular immunitary response in course of asymptomatic ectropion. Biopsies of the injured and healthy zones of the exocervix were carried out. All biopsies were examined by an immuno-histo-chemical method (Avidin-Biotin Complex, ABC) with monoclonal antibodies, in order to phenotype T lymphocytic subpopulations, in particular T helper lymphocytes (CD4), T suppressor lymphocytes (CD8) and Langerhans cells (CD1), which are basic elements of the monocytic-macrophagic series. Our preliminary findings showed a reduction of CD4, CD8 and CD1 lymphocytic subpopulations in ectropion zones, while these subpopulations are normally present in healthy zones of the exocervix. These findings support the hypothesis that, in ectropion, as in HPV infections and in CIN, a localized immuno-deficiency may appear and depress immuno-surveillance and cell-mediated response. In conclusion, it may be supposed that ectropion represents a non-stable lesion, which therefore needs suitable therapeutic intervention.
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