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Updated: Oct 8, 2026

Granulocyte-dependent Autoantibody-induced Skin Blistering
Published on: October 12, 2012
Disrupted desmosomes in induced lesions of familial benign chronic pemphigus
Abstract:
An occlusive dressing was applied to the unaffected skin of the back of a patient with familial benign chronic pemphigus (FBCP). Small lesions of FBCP appeared after 48 h, and the ultrastructure of successive biopsies was studied. It was concluded that: (a) the initial phenomenon in FBCP is the result of an insufficiency of cellular adhesion. This confirms several previous reports. (b) desmosomes are separated in two halves, invaginated in vacuoles and later deeply included in the cell. The particular fate of these disrupted desmosomes has already been observed after the action of several enzymes on the epidermis and in Darier's disease.
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Papillary Dermis
The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The dermis is made of two layers of connective tissue that comprise an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts.
Papillary Layer
The papillary layer is made of loose, areolar connective tissue, which means the collagen and...