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Scanning electron microscopy of a blister roof in dystrophic epidermolysis bullosa / Microscopia eletronica de varredura do teto de uma bolha de epidermolise bolhosa distrofica
Almeida Jr., Hiram Larangeira de; Monteiro, Luciane; Silva, Ricardo Marques e; Rocha, Nara Moreira; Scheffer, Hans.
Affiliation
  • Almeida Jr., Hiram Larangeira de; Federal University of Pelotas. Pelotas. BR
  • Monteiro, Luciane; Federal University of Pelotas. Pelotas. BR
  • Silva, Ricardo Marques e; Federal University of Pelotas. Pelotas. BR
  • Rocha, Nara Moreira; Federal University of Pelotas. Pelotas. BR
  • Scheffer, Hans; Federal University of Pelotas. Pelotas. BR
An. bras. dermatol ; 88(6): 966-968, Nov-Dec/2013. graf
Article in English | LILACS | ID: lil-699006
Responsible library: BR1.1
ABSTRACT
In dystrophic epidermolysis bullosa the genetic defect of anchoring fibrils leads to cleavage beneath the basement membrane, with its consequent loss. We performed scanning electron microscopy of an inverted blister roof of a case of dystrophic epidermolysis bullosa, confirmed by immunomapping and gene sequencing. With a magnification of 2000 times a net attached to the blister roof could be easily identified. This net was composed of intertwined flat fibers. With higher magnifications, different fiber sizes could be observed, some thin fibers measuring around 80 nm and thicker ones measuring between 200 and 300 nm.
RESUMO
Na epidermólise bolhosa distrófica, o defeito genético das fibrilas ancorantes leva à clivagem abaixo da membrana basal, com sua consequente perda. Realizamos microscopia eletrônica de varredura do teto invertido de uma bolha de um caso de epidermólise bolhosa distrófica, cujo diagnóstico foi confirmado com imunomapeamento e com sequenciamento gênico. Com uma ampliação de 2.000 vezes, pôde ser facilmente identificada uma rede ligada ao teto da bolha. Essa rede era composta por fibras achatadas e entrelaçadas. Com grandes aumentos, fibras de diferentes tamanhos puderam ser observadas algumas finas, medindo cerca de 80 nm, e outras mais largas, medindo entre 200 nm e 300 nm.
Subject(s)


Full text: Available Collection: International databases Database: LILACS Main subject: Epidermolysis Bullosa Dystrophica / Blister Limits: Humans Language: English Journal: An. bras. dermatol Journal subject: Dermatology Year: 2013 Document type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Pelotas/BR

Full text: Available Collection: International databases Database: LILACS Main subject: Epidermolysis Bullosa Dystrophica / Blister Limits: Humans Language: English Journal: An. bras. dermatol Journal subject: Dermatology Year: 2013 Document type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Pelotas/BR
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