title: Oral Paracoccidioidomycosis Granulomas are Predominantly Populated by CD163+ Multinucleated Giant Cells.
abstract: 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.
authors.affiliation: Department of Clinic and Surgery, School of Dentistry, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil.
authors.forename: Renato
authors.initials: R
authors.lastname: do Prado Gomes Pedreira
authors.affiliation: Department of Clinic and Surgery, School of Dentistry, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil.
authors.forename: Marina Lara
authors.initials: ML
authors.lastname: de Carli
authors.affiliation: Institute of Exact Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil.
authors.forename: Luiz Alberto
authors.initials: LA
authors.lastname: Beijo
authors.affiliation: Pathology Center, Adolfo Lutz Institute, Av. Dr. Arnaldo, 355 Cerqueira César, São Paulo, SP, 01246-902, Brazil.
authors.forename: Suely
authors.initials: S
authors.lastname: Nonogaki
authors.affiliation: Department of Pathology and Parasitology, Institute of Biomedical Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil.
authors.forename: Alessandro Antônio Costa
authors.initials: AA
authors.lastname: Pereira
authors.affiliation: Department of Clinic and Surgery, School of Dentistry, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil.
authors.forename: Noé Vital Ribeiro
authors.initials: NV
authors.lastname: Junior
authors.affiliation: Department of Pathology and Parasitology, Institute of Biomedical Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil.
authors.forename: Felipe Fornias
authors.initials: FF
authors.lastname: Sperandio
authors.affiliation: 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.
authors.forename: João Adolfo Costa
authors.initials: JA
authors.lastname: Hanemann
mesh_terms: D015703:Antigens, CD / Q000032:analysis*; D015214:Antigens, Differentiation, Myelomonocytic / Q000032:analysis*; D015169:Colony Count, Microbial; D003600:Cytosol / Q000382:microbiology; D015726:Giant Cells / Q000737:chemistry*; D006099:Granuloma / Q000473:pathology*; D006651:Histocytochemistry; D006801:Humans; D007150:Immunohistochemistry; D008853:Microscopy; D009059:Mouth Diseases / Q000473:pathology*; D010228:Paracoccidioides / Q000302:isolation & purification; D010229:Paracoccidioidomycosis / Q000473:pathology*; D010587:Phagocytosis; D011956:Receptors, Cell Surface / Q000032:analysis*; D000098902:CD163 Antigen
chemical_list: D015703:Antigens, CD; D015214:Antigens, Differentiation, Myelomonocytic; D000098902:CD163 Antigen; D011956:Receptors, Cell Surface
keywords: CD163 antigen; Fungi; Giant cells; Paracoccidioidomycosis