In situ immune response in human dermatophytosis: possible role of Langerhans cells (CD1a+) as a risk factor for dermatophyte infection

ABSTRACT Dermatophytosis is a cutaneous mycosis caused by a plethora of keratinophilic fungi, but Trichophyton rubrum is the most common etiological agent. Despite its high prevalence worldwide, little is known about the host defense mechanisms in this infection, particularly the in situ immune resp...

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Bibliographic Details
Published in:Revista do Instituto de Medicina Tropical de São Paulo
Main Authors: Ana Paula Carvalho Reis, Franciele Fernandes Correia, Thais Martins Jesus, Carla Pagliari, Neusa Y Sakai-Valente, Walter Belda Júnior, Paulo Ricardo Criado, Gil Benard, Maria Gloria Teixeira Sousa
Format: Article in Journal/Newspaper
Language:English
Published: Universidade de São Paulo (USP) 2019
Subjects:
Dermatophytosis
Innate immune response
Langerhans cells
Macrophages
CD68+
Factor XIIIa+
CD1a+
Trichophyton rubrum
Arctic medicine. Tropical medicine
RC955-962
Infectious and parasitic diseases
RC109-216
Arctic
Online Access:https://doi.org/10.1590/s1678-9946201961056
https://doaj.org/article/10451a4cdb5b43e498270b29af4d1ba5
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Summary:ABSTRACT Dermatophytosis is a cutaneous mycosis caused by a plethora of keratinophilic fungi, but Trichophyton rubrum is the most common etiological agent. Despite its high prevalence worldwide, little is known about the host defense mechanisms in this infection, particularly the in situ immune response. Using an immunohistochemistry approach, we investigated the density of CD1a+, factor XIIIa+ and CD68+ cells in the skin of dermatophytosis patients. Langerhans cells (CD1a+ cells) were significantly decreased in the epidermis of patients, both in affected and unaffected areas. In the dermis, however, no differences in the density of macrophages (CD68+ cells) and dermal dendrocytes (factor XIIIa+ cells) were observed. These results suggest that the decreased number of Langerhans cells may be a risk factor for development of dermatophytosis.

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