| Autor: |
do Prado Gomes Pedreira R; Department of Clinic and Surgery, School of Dentistry, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil., de Carli ML; Department of Clinic and Surgery, School of Dentistry, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil., Beijo LA; Institute of Exact Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil., Nonogaki S; Pathology Center, Adolfo Lutz Institute, Av. Dr. Arnaldo, 355 Cerqueira César, São Paulo, SP, 01246-902, Brazil., Pereira AA; Department of Pathology and Parasitology, Institute of Biomedical Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil., Junior NV; Department of Clinic and Surgery, School of Dentistry, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil., Sperandio FF; Department of Pathology and Parasitology, Institute of Biomedical Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil., Hanemann JA; Department of Clinic and Surgery, School of Dentistry, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil. jachanemann@uol.com.br. |
| Abstrakt: |
Multinucleated giant cells (MGC) are considered to be a hallmark of granulomatous inflammation; thus, they may play an essential role in the host response against pathogens, particularly Paracoccidioides brasiliensis. This study characterizes the MGC found in oral paracoccidioidomycosis and assesses the correlation of MGC with the amount of fungi within oral tissues. Twenty-six cases were included. They were classified as loose or dense granulomas, and the total MGC, including foreign-body and Langhans giant cells, besides the total and intracellular fungi, were taken into consideration. CD163 immunoexpression was performed, and CD163+ multinucleated giant cells were also quantified. Dense granulomas revealed more foreign-body type and total giant cells than loose granulomas (P < 0.05). Total giant cells showed a positive linear correlation with the CD163+ cells (P = 0.003; r = 0.56) and intracellular fungi quantification (P = 0.045; r = 0.40). Oral paracoccidioidomycosis lesions contain MGC that mainly belong to a CD163+ phenotype, also showing both Langhans and foreign-body arrangements. Additionally, the higher the presence of MGC, the higher the amount of phagocytized fungi. |
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