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- W2280491434 abstract "The expression intensities of cytokeratins and tight junction proteins were determined on reepithelization. Experimental blister wound healing was studied in patients with diabetes mellitus and in patients with obstructive jaundice. Suction blisters were induced on healthy volunteers, and the healing blisters were biopsied at different time points. Cytokeratin expression and the tight junction proteins ZO-1 and occludin were studied immunohistochemically. Blisters were induced on 17 patients with diabetes and 11 control subjects, and the healing process was followed indirectly by measuring water evaporation and blood flow in the wounds. Microvascular reactivity in the diabetic patients was also studied by using non-immunologic contact irritants. Wound healing, skin collagen synthesis and serum levels of procollagen propeptides were studied in 24 patients with obstructive jaundice caused by neoplastic pancreaticobiliary obstruction and in 17 control patients with the corresponding condition without jaundice. Cytokeratin expression was altered in healing epidermis. In the suprabasal layer, K10 was replaced by K14 and, most likely, by K16. K18 keratin, which is not present in normal epidermis, was found in the basal and suprabasal layers. Thus, there was a shift towards lower molecular weight cytokeratins, which is a reflection of immaturity, and probably towards motility. The tight junction proteins ZO-1 and occludin were expressed in the migrating epidermal sheet, where they apparently form an early barrier. Enhanced expression was seen in the hyperproliferative zone of the wound edge. The diabetic patients showed slower restoration of the epidermal barrier and a weaker initial inflammatory response. Obstructive jaundice and its resolution had no effect on healing. Skin collagen synthesis was decreased in jaundiced patients, and it increased slightly after drainage. Serum type III collagen propeptide levels were elevated in patients with biliary obstruction and dropped after drainage. The elevated levels may be related to the increased synthesis due to fibrosis. As a conclusion, diabetes mellitus impairs epidermal wound healing, while obstructive jaundice does not." @default.
- W2280491434 created "2016-06-24" @default.
- W2280491434 creator A5046264505 @default.
- W2280491434 date "2004-01-01" @default.
- W2280491434 modified "2023-09-24" @default.
- W2280491434 title "Wound healing in a suction blister model : an experimental study with special reference to healing in patients with diabetes and patients with obstructive jaundice" @default.
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