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Titolo:
EPIDERMOLYSIS-BULLOSA HERPETIFORMIS (DOWLING-MEARA TYPE) EXHIBITS ULTRASTRUCTURAL DERANGEMENT OF TONOFILAMENTS AND DESMOSOMES
Autore:
FURUMURA M; IMAYAMA S; HORI Y;
Indirizzi:
KYUSHU UNIV,FAC MED,DEPT DERMATOL FUKUOKA 812 JAPAN
Titolo Testata:
Archives of dermatological research
fascicolo: 5, volume: 286, anno: 1994,
pagine: 233 - 241
SICI:
0340-3696(1994)286:5<233:EH(TEU>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTERMEDIATE FILAMENT PROTEINS; MONOCLONAL-ANTIBODIES; ELECTRON-MICROSCOPY; SIMPLEX; CELLS; SKIN; EXPRESSION; TISSUES;
Keywords:
EPIDERMOLYSIS BULLOSA HERPETIFORMIS; SKIN ULTRASTRUCTURE; KERATIN INTERMEDIATE FILAMENTS; DESMOSOMES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
46
Recensione:
Indirizzi per estratti:
Citazione:
M. Furumura et al., "EPIDERMOLYSIS-BULLOSA HERPETIFORMIS (DOWLING-MEARA TYPE) EXHIBITS ULTRASTRUCTURAL DERANGEMENT OF TONOFILAMENTS AND DESMOSOMES", Archives of dermatological research, 286(5), 1994, pp. 233-241

Abstract

Ultrastructural and immunohistochemical studies of clinically intact skin obtained from three severe neonatal cases of epidermolysis bullosa herpetiformis (Dowling-Meara type) demonstrated disorders in the assembly of keratin intermediate filaments and desmosomes of the keratinocytes. During mitosis, K5- and K14-positive and K1- and K10-negative tonofilaments were disrupted and formed spherical bodies associated with intracytoplasmic desmosomes by invagination of the desmosomes and the adjacent plasma membrane. During the invagination process, destructive changes in the internalized membrane were noted. These were accompanied by gradual loss of reactivity with a monoclonal antibody ZK31, which detected plasma membrane adjacent to the attachment plaques of desmosomes. However, the reactivity of the attachment plaques of the internalized desmosomes for desmoplakins and desmoglein did not decline during the process of internalization. In the suprabasal layers of the epidermis, filamentous substructures and K1 and K10 appeared at the periphery of the spherical bodies. Simultaneously, the desmosomes that were sparsely located in the lower epidermis, increased in number as cell differentiation progressed. Thus, the keratinocytes attained an almost normal appearance with respect to tonofilaments and desmosomes by the time they reached the upper layer of the epidermis. These findings may be relevant to the mechanism responsible for the clinical appearance of the herpetiform blisters in epidermolysis bullosa herpetiformis,which are also characterized by spontaneous involution during childhood or when exposed to high ambient temperatures.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 19:30:39