blister/protease

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Proteases are responsible for blister formation in recessive dystrophic epidermolysis bullosa and epidermolysis bullosa simplex.

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The specific factors which induce blister formation in recessive dystrophic epidermolysis bullosa (RDEB) and epidermolysis bullosa simplex (EBS) were studied by culturing normal human skin with blister fluid from patients with RDEB and EBS. When skin from a healthy person was cultured with RDEB

Cytotoxic proteases in blister fluid of pemphigus and pemphigoid patients.

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Investigation of blister fluid (BF) from 49 pemphigus vulgaris and 27 bullous pemphigoid patients revealed direct interrelation between proteolytic and cytotoxic activities of BF. Human epidermal keratinocytes proved to be more sensitive to the cytolytic effect of BF as compared to human

Proteases and cutaneous blister formation.

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Granzyme B is elevated in autoimmune blistering diseases and cleaves key anchoring proteins of the dermal-epidermal junction.

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In healthy skin, epidermis and dermis are anchored together at the dermal-epidermal junction (DEJ), a specialized basement membrane pivotal for skin integrity and function. However, increased inflammation in the DEJ is associated with the disruption and separation of this junction and sub-epidermal

Association of genes of protease-antiprotease balance pathway to lung function and emphysema subtypes.

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BACKGROUND The imbalance between proteases and antiproteases has been proposed to participate to the pathogenesis of chronic obstructive pulmonary disease (COPD) and emphysema. Gene level variation in different metalloproteinases, metalloproteinase inhibitors, and cytokines affecting them may

Molecular basis for mustard-induced vesication.

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A biochemical hypothesis explaining the generation of pathology in human skin by mustard gas (HD) is presented which links the initiation of DNA damages to local alterations of metabolism and subsequent development of blisters. The proposed sequence involves HD alkylation of purines in DNA which are

Sulfur mustard-stimulated proteases and their inhibitors in a cultured normal human epidermal keratinocytes model: A potential approach for anti-vesicant drug development.

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Protease stimulation in cultured normal human epidermal keratinocytes (NHEK) due to sulfur mustard (SM) exposure is well documented. However, the specific protease(s) stimulated by SM and the protease substrates remain to be determined. In this study, we observed that SM stimulates several proteases

Staphylococcal scalded skin syndrome: exfoliative toxin A (ETA) induces serine protease activity when combined with A431 cells.

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Staphylococcal scalded skin syndrome is the term used for a spectrum of primarily neonatal blistering skin diseases caused by the exfoliative toxins, ETA and ETB, of Staphylococcus aureus. Despite 25 y of research, the toxins' mechanism of action is still poorly understood, although evidence

Increased neutral protease and collagenase activity in recessive dystrophic epidermolysis bullosa.

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The enzyme activities of normal-looking skin and blister fluid from a patient with recessive dystrophic epidermolysis bullosa (RDEB) were measured. Of the hydrolytic enzymes measured, both collagenase and neutral protease activities were considerably increased in the skin and blister fluid samples

Sulfur mustard-stimulated protease: a target for antivesicant drugs.

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One of the mechanisms of the skin blistering effect (vesication) of sulfur mustard (bis-(2-chloroethyl)sulfide, HD) is believed to be via the stimulation of specific protease(s) at the dermal-epidermal junction. Cultured normal human epidermal keratinocytes (NHEK) were used as a model to study and

Altered insulin-like growth factor-II (IGF-II) level and IGF-binding protein-3 (IGFBP-3) protease activity in interstitial fluid taken from the skin lesion of psoriasis.

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In the present study, we have investigated insulin-like growth factors (IGFs) and their binding proteins (IGFBPs) in serum and artificially raised blister fluid from uninvolved and involved areas of nine patients with psoriasis. Both levels of IGFs and IGFBP-3, and profiles of IGFBP in serum and

Mast cells in developing subepidermal bullous diseases: emphasis on tryptase, chymase and protease inhibitors.

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The possible involvement of mast cell tryptase and chymase in subepidermal bullous diseases was studied enzyme-histochemically in specimens from erythematous and vesicular skin and from non-involved skin of patients with dermatitis herpetiformis, bullous pemphigoid, erythema multiforme, infective

Protease inhibitors prevent plasminogen-mediated, but not pemphigus vulgaris-induced, acantholysis in human epidermis.

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Pemphigus is an autoimmune blistering disease of the skin and mucous membranes. It is caused by autoantibodies directed against desmosomes, which are the principal adhesion structures between epidermal keratinocytes. Binding of autoantibodies leads to the destruction of desmosomes resulting in the

Effects of steroid, retinoid, and protease inhibitors on the formation of acantholysis induced in organ culture of skins from patients with benign familial chronic pemphigus.

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Skin explants from two lesional areas and four normal-appearing areas of four patients with benign familial chronic pemphigus (BFCP) were organ cultured with and without various reagents. After 24-h culturing of involved skin with medium only, dissociation of keratinocytes, which was also observed

The generation of a human dermal equivalent to assess the potential contribution of human dermal fibroblasts to the sulphur mustard-induced vesication response.

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1. A human dermal equivalent (HDE) gel was constructed from rat tail tendon collagen (type 1) and human dermal fibroblasts (HFs). Histological studies revealed that the HFs within the HDE gel matrix assumed the shape of differentiated dermal fibroblasts and were metabolically viable as determined by

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