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Epidermal Proteinase-Activated Receptor-2 Expression is Increased in End-Stage Renal Disease Patients with Pruritus: A Pilot Study.

 Sung Jin Moon  ;  Hyun Jung Kim  ;  Sung Bin Cho  ;  Seung Hun Lee  ;  Hoon Young Choi  ;  Hyeong Cheon Park  ;  Sung Kyu Ha 
 Electrolytes & Blood Pressure, Vol.12(2) : 74-79, 2014 
Journal Title
Electrolytes & Blood Pressure
Issue Date
End-stage renal disease ; Proteinase activated receptor-2 ; Pruritus ; Serine protease ; Uremia
Uremic pruritus is a common problem in patients with end-stage renal disease (ESRD), but the underlying mechanisms are not yet fully understood. We aimed to investigate the association between severity of uremic pruritus and cutaneous serine protease activity, as well as proteinase-activated receptor-2 (PAR-2) expression. Twelve ESRD patients with pruritus, 4 ESRD patients without pruritus, and 6 healthy controls were enrolled. Skin biopsies were obtained from the abdomen. Protease activity and PAR-2 expression in the epidermis were examined by in situ zymography and confocal laser microscopy, respectively. All ESRD patients presented more pronounced cutaneous protease activity compared with that in healthy controls. The skin samples from the patients with pruritus showed higher protease activity than either nonpruritic ESRD patients or healthy controls. The epidermis in all samples of ESRD patients presented higher immunoreactivity against PAR-2 versus those of healthy controls. In addition, correlation analysis between PAR-2 expression and VAS pruritus scores showed a significant positive correlation. Our data suggests that levels of serine protease and PAR-2 expression could play important roles in the pathogenesis of uremic pruritus.
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1. College of Medicine (의과대학) > Dept. of Dermatology (피부과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
Yonsei Authors
Park, Hyeong Cheon(박형천) ORCID logo https://orcid.org/0000-0002-1550-0812
Lee, Seung Hun(이승헌)
Cho, Sung Bin(조성빈)
Choi, Hoon Young(최훈영) ORCID logo https://orcid.org/0000-0002-4245-0339
Ha, Sung Kyu(하성규)
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