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Imagens em Hematologia Clínica/ Images in Clinical Hematology

Síndrome de Chanarin-Dorfman

Chanarin-Dorfman Syndrome

REVISTA BRASILEIRA D E H E M ATO L O G I A E H E M O T E R A P I A REVISTA BRASILEIRA D E H E M AT O L O G I A E H E M O T E R A P I A

Sheila de Oliveira Garcia1

Aline de Lima Deolindo 1

Juliana Pereira 2

A síndrome de Chanarin-Dorfman é uma doença rara autos-sômica recessiva, que pode estar associada à ictiose, caracteriza-se pela presença de gotículas lipídicas intracelulares em células dos mais variados tecidos, especialmente nos queratinócitos e granuló-citos. Mutações no gene ABHD5, que codifica uma proteína da esterase/lipase/subfamília tioesterase, têm sido identificadas como o principal motivo da desordem. As manifestações extracutâneas são heterogêneas, tanto em intensidade quanto em características. O envolvimento sistêmico pode incluir hepatoesplenomegalia, catara-tas de dupla face, retardo de crescimento, miopatia, ataxia e perda auditiva neurossensorial bilateral.(1) Desde os primeiros relatos da

síndrome,(1) apenas 30 pacientes foram descritos na literatura, a

maioria proveniente de países do Oriente Médio.(2) O diagnóstico é

confirmado pela presença de gotículas lipídicas em granulócitos de sangue periférico.(3)

Descritores: Ictiose; Erros inatos do metabolismo lipídico;

Síndrome; Granulócitos

Abstract

Chanarin-Dorfman syndrome is a rare autosomal recessive disease that may be associated with ichthyosis and is characterized by the presence of intracellular lipid droplets in the cells of many different tissues, in particular in keratinocytes and granulocytes. Mutations in the gene that encodes the ABHD5 protein of the esterase/lipase/ thioesterase subfamily have been identified as the main cause of the disorder. The extracutaneous manifestations are heterogeneous, both in intensity and characteristics. Systemic involvement may include hepatosplenomegaly, double-sided cataracts, growth retardation, myopathy, ataxia and bilateral sensorineural hearing loss. (1) Since

the first reports of the syndrome (1) only 30 patients have been described

in the literature, mostly from Middle Eastern countries.(2) The diagnosis

is confirmed by the presence of lipid droplets in granulocytes of peripheral blood.(3)

Keywords: Ichthyosis; Lipid metabolism, inborn errors ;

Syndrome; Granulocytes

Referências

1. Dorfman ML, Hershko C, Eisenberg S, Sagher F. Ichthyosiform dermatosis with systemic lipidosis. Arch Dermatol. 1974;110(2): 261-4.

2. Peña-Penabad C, Almagro M, Martínez W, García-Silva J, Del Pozo J, Yebra MT, et al. Dorfman-Chanarin syndrome (neutral lipid storage disease): new clinical features. Br J Dermatol. 2001; 144(2):430-2. Review.

3. Lefèvre C, Jobard F, Caux F, Bouadjar B, Karaduman A, Heilig R, et al. Mutations in CGI-58, the gene encoding a new protein of esterase /lipase / thioesterase subfamily, in Chanarin-Dorfman syndrome. Am J Hum Genet. 2001;69(5):1002-12.

Figura 1. Grandes vacúolos lipídicos citoplasmáticos nos neutrófilos sugerindo síndrome de Chanarin-Dorfman. Sangue periférico, coloração por Leishman, aumento X 1000

Figura 2. Proeminentes vacúolos citoplasmáticos nos neutrófilos. Sangue periférico, coloração por Leishman, aumento X 1000

1Faculdade de Medicina da Universidade de São Paulo – USP –

São Paulo (SP), Brasil.

2Serviço de Hematologia do Hospital das Clínicas da Faculdade de

Medicina da Universidade de São Paulo – USP – São Paulo (SP), Brasil.

Correspondência: Sheila de Oliveira Garcia

Faculdade de Medicina da Universidade de São Paulo

Av. Dr. Enéas Carvalho de Aguiar, 155 - 1° andar, bloco 4, sala 61, Laboratório de Imunopatologia – Cerqueira César

Referências

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