Resumo
The pathogens of the reproductive system in the male can penetrate and establish by ascending route, from to the prepuce to the urethra, accessory glands, epididymis and testicles. The aim of this paper is determine the distribution and number of cells involved in the immune response in prepuce and pelvic urethra of rams, without apparent clinical alterations in testicle, epididymis and prepuce. [...] Significant differences were found in the total number of CD4, CD45RO, and WC1 lymphocytes, in CD14 macrophages, and CD1b dendritic cells, with mean values being greater in the fornix than in the urethra (p<0.05) in all cases. Only dendritic cells were found in the prepuce. No differences were found in the number of CD8 lymphocytes between both organs. The ratio between each cell type in the connective and the intraepithelial tissues and between organs was 10/1 for CD4 in the fornix (p<0.05), against 7/1 in the urethra (p<0.05), while CD8 had a 1/1 distribution in both mucosae. The WC1 ratio was 5/1 in both mucosae (p<0.05). CD45RO labeling was 19/1 in the prepuce (p<0.05) and 1/1 in the urethra. IgA-containing cells did not show differences in the total number of cells in both tissues. In the urethra, no IgG-containing cells were observed and IgM-containing cells were scarce; in contrast, both cell types were present in the prepuce, in amounts greater than in the urethra (p<0.05). IgA-, IgG-, and IgM-containing cells were located in both organs in the mucosal connective tissue. The presence of antigen-presenting cells, macrophages, and dendritic cells, as well as of lymphocytes CD4, CD8 TCR γδ (WC1), IgA-, IgG and IgM positive cells, and CD45RO cells suggests that both mucosae may behave as inductive and effector sites for the mucosal immune response.(AU)
Os patógenos do aparelho reprodutor do macho podem penetrar e se estabelecer por via ascendente, a partir do prepúcio à uretra, glándulas anexas, epidídimo e testículos. Neste trabalho foi quantificada a distribuição de algumas das células envolvidas na resposta imune, em nível de prepúcio e uretra pélvica, em quatro carneiros de um ano de idade, sem lesões aparentes no testículo, no epidídimo e no prepúcio.[...] Não foram encontradas diferenças significativas no número de linfocitos CD8 entre ambos os orgãos. A relação entre cada tipo celular no tecido conectivo e intra-epitelial e entre os diferentes órgãos, resultou para CD4 10/1 no prepúcio (p<0.05), contra 7/1 na uretra (p<0.05), entretanto os CD8 se distribuíram 1/1 em ambas as mucosas, não sendo significativa as diferenças. Os WC1 foram observados na relação 5/1 em ambas as mucosas (p<0.05). A célula CD45RO, no prepucio, foi observada de 19/1(p<0.05) e na uretra de 1/1, não sendo um resultado significativo. As CC-IgA não mostraram diferença significativa no total de células em ambos os tecidos. Na uretra não foram observadas as CC-IgG, e as CC-IgM foram escassas; em contrapartida, ambos os tipos celulares foram observadas no prepucio, em quantidades menores que na uretra (p<0.05). As CC-IgA, IgG e IgM foram observadas em ambos os tecidos conectivos da mucosa. A presença de células apresentadoras de antígenos, macrófagoss e células dendríticas, assim como de linfócitos CD4, CD8. TCR γδ (WC1), CC-IgA, IgG e IgM e células CD45RO, determinam que ambas as mucosas podem se comportar como locais de indução e promoção da resposta imune das mucosas.(AU)