Bullous pemphigoid and milia: prevalence and clinical laboratory findings in a Brazilian sample
An. bras. dermatol
;
97(4): 435-442, July-Aug. 2022. tab, graf
Artículo
en Inglés
|
LILACS-Express
| LILACS
| ID: biblio-1383608
ABSTRACT
Abstract Background:
Bullous pemphigoid (BP) associated with milia lesions has been increasingly reported, but its prevalence has not been reported in a Brazilian BP population yet.Objectives:
To describe the occurrence and clinical-laboratorial findings of BP-milia association in a southeastern Brazilian sample.Methods:
A descriptive study based on the medical charts of 102 BP patients was accomplished. Clinical and laboratory data of BP-milia patients were compiled. Total serum IgE measurements, immunoblot assays based on basement membrane zone antigens, and HLA-DQ alleles typing were performed.Results:
Milia was evident in 8 (7.8%) BP patients, five males, aged between 46 and 88 years. Increased total IgE levels were determined in 7 (87.5%) of the eight patients. In five of eight patients, immunoblotting showed IgG reactivity against the BP180-NC16a domain but not against collagen VII or laminin-332; it also revealed reactivity against the BP180 C-terminal domain or LAD-1, or both in four of them. The HLA-DQB1*0301 and HLA-DQA1*0505 alleles were identified in three of five BP-milia patients. Moreover, three of five cases presented the HLA-DQB1*06 allelic group. Studylimitations:
HLA determination was performed in five patients.Conclusions:
Milia formation in BP patients seems to be less uncommon than previously admitted. Laboratory data revealed increased IgE; autoantibodies against the BP180 C-terminal domain or LAD-1, or both; and the HLA-DQB1*06 allelic group, described for the BP-milia association. Careful determination of antibodies against basement membrane zone molecules and HLA characterization in different populations may provide further insights into this association. © 2022 Sociedade Brasileira de Dermatologia. Published by Elsevier España, S.L.U. This is an open access article under the CC BY license (https//creativecommons.org/licenses/by/4.0/).
Texto completo:
Disponible
Índice:
LILACS (Américas)
Tipo de estudio:
Estudio diagnóstico
/
Estudio de prevalencia
/
Estudio pronóstico
/
Factores de riesgo
País/Región como asunto:
America del Sur
/
Brasil
Idioma:
Inglés
Revista:
An. bras. dermatol
Asunto de la revista:
Dermatologia
Año:
2022
Tipo del documento:
Artículo
País de afiliación:
Brasil
/
Japón
Institución/País de afiliación:
Kurume University/JP
/
Universidade de São Paulo/BR
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