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Serum osteoprotegerin is markedly increased and may contribute to decreased blood T cell count in hemodialysis patients.
MedLine Citation:
PMID:  23296793     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
PURPOSE: Acquired immunity is impaired in hemodialysis (HD) patients, and decreased T cell number may contribute. Receptor activator of nuclear factor-κB ligand (RANKL) and osteoprotegerin (OPG) are expressed in cells of the immune system and affect T cell development, homeostasis and proliferation. Serum levels of RANKL and OPG and their relation to blood T cell number were evaluated in HD patients. METHODS: Thirty-four HD patients and 20 healthy controls participated in the study. Serum RANKL and OPG were measured by ELISA and T cell number was assessed by flow cytometry. RESULTS: Median RANKL concentration did not differ between HD patients and healthy volunteers (300.00 pmol/L; range, 3,340.00 vs. 330.00 pmol/L; range, 440.00 pmol/L; p = 0.528). Median OPG was markedly higher in HD patients than in healthy volunteers (13.12 ± 4.71 vs. 4.71 ± 0.93 pmol/L, p < 0.001). The T cell count was significantly lower in HD patients than in healthy controls (1,177.00 ± 567.71 vs. 1,519.80 ± 594.96 cells/mm(3), p = 0.044). In HD patients, blood T cell number was correlated positively with serum RANKL (ρ = 0.462, p = 0.007) and negatively to serum OPG (r = -0.449, p = 0.008). CONCLUSION: Serum OPG concentration is markedly increased in HD patients and may contribute to decreased blood T cell count and impaired acquired immunity that characterizes this population.
Authors:
Theodoros Eleftheriadis; Efi Yiannaki; Vassilios Liakopoulos; Georgia Antoniadi; Georgios Pissas; Grammati Galaktidou; Ioannis Stefanidis
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-8
Journal Detail:
Title:  International urology and nephrology     Volume:  -     ISSN:  1573-2584     ISO Abbreviation:  Int Urol Nephrol     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0262521     Medline TA:  Int Urol Nephrol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Nephrology, Medical School, University of Thessaly, Neo Ktirio, Mezourlo Hill, 41110, Larissa, Greece, teleftheriadis@yahoo.com.
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