Immunofluorescent and electron-micrsocopic findings in the uninvolved skin of patients with systemic lupus erythematosus

S. Halevy, M. Ben-Bassat, H. Joshua

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Abstract

Specimens of uninvolved skin of 20 patients with systemic lupus erythematosus (SLE) were studied using a direct immunofluorescent technique (IF) and the electron microscope (EM). EM examination revealed deposits of electron-dense material below the basal membrane, among collagen fibers in the dermis and in the walls of dermal blood vessels. The direct IF technique revealed granular 'band' deposition of immunoglobulins and complement at the dermo-epidermal junction as well as granular deposition in the walls of blood vessels. There was close correlation between the IF and EM findings. It was concluded that the EM is of particular value in precisely delineating the location and ultrastructural pattern of skin deposits. The IF technique is not limited in relation to the size of area which can be studied and makes it possible to identify the specific immune fractions present. It is suggested that these two methods are mutually complementary in providing information concerning the deposition of immunoglobulins taking place in the uninvolved skin of SLE patients.

Original languageEnglish
Pages (from-to)427-433
Number of pages7
JournalActa Dermato-Venereologica
Volume59
Issue number5
StatePublished - 1 Jan 1979
Externally publishedYes

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