Early basement membrane formation following the grafting of cultured epidermal sheets detached with thermolysin or Dispase

DC FieldValueLanguage
dc.contributor.authorGermain, Lucie-
dc.contributor.authorGuignard, Rina-
dc.contributor.authorRouabhia, Mahmoud-
dc.contributor.authorAuger, François A.-
dc.description.abstractThe basement membrane zone is important for graft adhesion and stability. The aim of the present study was to visualize the regeneration of the basement membrane and determine the sequential appearance of its constituents in the early postgrafting period of cultured human epidermal sheets. A keratinocyte single cell suspension, devoid of dermal fibroblast contamination, was obtained from human skin by a two-step tissue digestion method with thermolysin and trypsin. After culturing, epidermal sheets were generated, detached enzymatically by incubating with thermolysin (for 20–30 min) or Dispase (for 45–60 min), and deposited on a muscular graft bed of athymic mice. Immunohistochemistry and ultrastructural analyses were performed on biopsies harvested 2, 4 and 21 days postgrafting. Bullous pemphigoid antigens and laminin were detected at the dermo—epidermal junction, showing an almost continuous line 2 days postgrafting. Type IV collagen was generally absent at this time, but it was detected 4 days postgrafting. Type VII collagen was labelled as a discontinuous line of increasing intensity from 2 to 21 days postgrafting. Ultrastructural analysis revealed hemidesmosomes and a discontinuous lamina densa 2 days postgrafting, and a complete basement membrane with a continuous lamina densa, hemidesmosomes and anchoring fibrils 21 days postgrafting. The sequence of appearance of major basement membrane components was similar for cultured sheets detached with thermolysin or Dispase. However, it differed from that of other wound healing models. Results are discussed in terms of the variable keratinocyte migration requirement between various wound healing models.fr
dc.titleEarly basement membrane formation following the grafting of cultured epidermal sheets detached with thermolysin or Dispasefr
dc.typeCOAR1_1::Texte::Périodique::Revue::Contribution à un journal::Article::Article de recherchefr
dcterms.bibliographicCitationBurns, Vol. 21 (3), 175–180 (1995)fr
dc.subject.rvmPeau -- Greffefr
rioxxterms.versionVersion of Recordfr
rioxxterms.project.funder_nameMedical Research Council Canadafr
rioxxterms.project.funder_nameFondation de l’Hôpital du Saint-Sacrementfr
rioxxterms.project.funder_nameFondation des Pompiers du Quebec pour les Grands Brûlésfr
rioxxterms.project.funder_nameFonds de Recherche du Québec - Santéfr
Collection:Articles publiés dans des revues avec comité de lecture

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