Summary
Epidermal cell suspensions derived from keratotomed samples of normal human skin have been studied by light microscopy and by scanning and transmission electron microscope techniques. The method allows detailed inspection of the keratinocyte membranes. However, the trypsin used to obtain the suspensions limits the usefulness of the technique as some of the features observed — including invagination of desmosomes, vacuolation, and redistribution of tonofibrils — may be attributable to this proteolytic enzyme.
Zusammenfassung
Die epidermale Zellsuspensionen, die mit dem Keratom von menschlicher Haut gewonnen wurden, konnten lichtmikroskopisch und ruch Scanning und Transmissionenelektronenmikroskopie untersucht werden. Diese Methode erlaubt eine detaillierte Analyse der Keratinocytenmembran, jedoch wird die Aussage der mit Trypsin behandelten Suspensionen durch Effekte beeinträchtigt, die wie Invagination der Desmosomen, Vakuolisierung und Verteilung der Tonofibrilen der proteolytischen Wirkung dieses Enzyms zugeschrieben werden müssen.
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References
Barton SP, King CS, Marks R, Nicholls S (1980) A technique for studying the structural details of isolated human corneocytes. Br J Dermatol 102:63
Boyde A, Weiss RA, Vesely P (1972) Scanning electron microscopy of cells in culture. Exp Cell Res 71:313
Fukuyama K, Black MM, Epstein ZL (1974) Ultrastructural studies of newborn rat epidermis after trypsinisation. J Ultrastruct Res 46:219
Gommans JM, Bergers M, Van Erp PEJ, Van den Hurk, Jose JMA, Mier PD, Roelfzema H (1979) Studies on the plasma membrane of normal and psoriatic keratinocytes. 1. Preparation of material and morphological characterisation. Br J Dermatol 101:407
Gray GM, Yardley HJ (1975) Lipid composition of cells isolated from pig, human, and rat epidermis. J Lipid Res 16:441
Hentzer B, Kobayasi T (1976) Dissociation of human adult epidermal cells by disulphide-reducing agents and subsequent trypsinisation. Acta Derm Venerol (Stockh) 56:19
Huet Ch, Herzberg M (1972) Effects of enzymes and EDTA on ruthenium red and concanavalin A labelling of the cell surface. J Ultrastruct Res 42:186
Lempert TE, Elias PM (1979) Intraepidermal cell surface fine structure; Preservation and examination at high resoltuion. Anat Rec 193:927–938
Skerrow CJ (1980) The experimental production of high-level intraepidermal splits. Br J Dermatol 102:75
Stern IB, Sekeri-Pataryas KH (1972) The uptake of 14C-leucine and 14C-histidine by cell suspensions of isolated strata of neonata rat epidermis. J Invest Dermatol 59:3–251
Trump BF, Penttila A, Berezesky IK (1979) Studies on cell surface conformation following injury. II. Scanning and transmission electron microscopy of cell surface changes following anoxic injury in Ehrlich ascites tumour cells. Virchows Archiv [Cell Pathol] 29:297
Vogel KG (1978) Effects of hyaluronidase, trypsin, and EDTA on surface composition and topography during detachment of cells in culture. Exp Cell Res 113:345
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Barton, S.P., Marks, R. Changes in suspensions of human keratinocytes due to trypsin. Arch Dermatol Res 271, 245–257 (1981). https://doi.org/10.1007/BF00409453
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DOI: https://doi.org/10.1007/BF00409453