Perianal condylomata and anal intraepithelial neoplasia

2015 ◽  
pp. 201-205
Author(s):  
Tim Eglinton ◽  
Frank Frizelle
Keyword(s):  
Intraepithelial Neoplasia ◽  
Anal Intraepithelial Neoplasia

Anal Intraepithelial Neoplasia

2017 ◽  
Vol 51 (3) ◽  
pp. 203-207 ◽  
Author(s):  
Michele Limoges-Gonzalez ◽  
Amar Al-Juburi
Keyword(s):  
Intraepithelial Neoplasia ◽  
Anal Intraepithelial Neoplasia

scholarly journals Morphometric analysis of dendritic cells from anal mucosa of HIV-positive patients and the relation to intraepithelial lesions and cancer seen at a tertiary health institution in Brazil

2011 ◽  
Vol 26 (6) ◽  
pp. 521-529 ◽  
Author(s):  
Adriana Gonçalves Daumas Pinheiro Guimarães ◽  
Roberto Moreira da Silva Junior ◽  
Oscar Tadeu Ferreira da Costa ◽  
Ivan Tramujas da Costa e Silva ◽  
Felicidad Santos Gimenez ◽  
...  
Keyword(s):  
Dendritic Cells ◽  
Viral Load ◽  
Intraepithelial Neoplasia ◽  
Hpv Infection ◽  
Relative Volume ◽  
Significant Rise ◽  
Anal Intraepithelial Neoplasia ◽  
Hiv Positive ◽  
Hiv 1 ◽  
Hiv Negative

PURPOSE: To morphometrically quantify CD1a+ dentritic cells and DC-SIGN+ dendritic cells in HIV-positive patients with anal squamous intraepithelial neoplasia and to evaluate the effects of HIV infection, antiretroviral therapy and HPV infection on epithelial and subepithelial dendritic cells. METHODS: A prospective study was performed to morphometrically analyze the relative volume of the dendritic cells and the relationship between anal intraepithelial neoplasia and cancer in HIV-positive patients from the Tropical Medicine Foundation of Amazonas, Brazil. All patients were submitted to biopsies of anorectal mucosa to perform a classic histopathological and immunohistochemical analysis, employing antibodies against CD1a and DC-SIGN for the morphometric quantification of dendritic cells. RESULTS: HIV-negative patients displayed a CD1a DC density significantly higher than that of HIV-positives patients (3.75 versus 2.54) (p=0.018), and in patients with severe anal intraepithelial neoplasia had correlated between DC CD1a density with levels of CD4 + cells (p: 0.04) as well as the viral load of HIV-1 (p: 0.035). A not significant rise in the median density of CD1a+ DC was observed in the HIV positive/ HAART positive subgroup compared to the HIV positive/ HAART negative subgroup. The CD1a+ DC were also significantly increased in HIV-negative patients with anorectal condyloma (2.33 to 3.53; p=0.05), with an opposite effect in HIV-positive patients. CONCLUSIONS: Our data support an enhancement of the synergistic action caused by HIV-HPV co-infection on the anal epithelium, weakening the DC for its major role in immune surveillance. Notoriously in patients with severe anal intraepithelial neoplasia, the density of CD1a+ epithelial dendritic cells was influenced by the viral load of HIV-1. Our study describes for the first time the density of subepithelial DC-SIGN+ dendritic cells in patients with anal severe anal intraepithelial neoplasia and points to the possibility that a specific therapy for HIV induces the recovery of the density of epithelial DC.

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