Document Detail

Differences in epidermal thickness and expression of apoptosis regulatory proteins in the skin of patients with chronic renal failure and pruritus.
MedLine Citation:
PMID:  22748563     Owner:  NLM     Status:  Publisher    
Chronic renal failure is often associated with skin itching (pruritus) in dialysis patients. In order to investigate the possible causes of pruritus, the epidermis of the thigh of 12 dialysis patients and 4 controls from patients without renal disease were examined. The sections of the epidermis were measured and immunohistochemically analyzed using antibodies to Bcl-2, Bax, caspase-3 proteins and TUNEL method. While the mean thickness of normal epidermis was 53μm, in dialysis patients it ranged between 23 and 34μm during the 3-5 year period on dialysis. Compared to normal skin, the fine balance between the Bcl-2 and Bax proteins did not greatly change in the epidermis of dialysis patients during the three years of dialysis. Following five-year dialysis, the epidermis displayed increased Bax and decreased Bcl-2 expression in the basal and intermediate epidermal layers, as well as the presence of apoptotic cells (TUNEL and caspase-3 positive) both in the superficial and intermediate epidermal layers. Our study demonstrated the predominant expression of cell death Bax proteins over cell survival Bcl-2 proteins, and apoptotic cells in the deeper layers of the epidermis in patients on long-term dialysis. We speculate that the thinning of the epidermis might be associated with the appearance of dead cells in the deeper epidermal layers, while the changed internal milieu of epidermal cells could possibly affect the intra-epidermal nerve endings thus leading to the sensation of pruritus.
Lina Mirić Kovačević; Neira Puizina-Ivić; Dragan Ljutić; Snježana Mardešić Brakus; Danijela Kalibović Govorko; Ivo Jeličić; Dino Mirić; Jasminka Rešić; Mirna Saraga-Babić
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-6-27
Journal Detail:
Title:  Acta histochemica     Volume:  -     ISSN:  1618-0372     ISO Abbreviation:  -     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-7-3     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370320     Medline TA:  Acta Histochem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier GmbH. All rights reserved.
Clinic of Dermatovenerology, School of Medicine, University of Split, Clinical Hospital Center Split, Split, Croatia.
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