Elastase, myeloperoxidase, nitric oxide metabolites and oxidative status in subjects with clinical stable chronic renal failure on conservative treatment.
We evaluated, in a group of 41 CRF undialyzed subjects (29 men and 12 women, mean age 64.1 +/- 11.3 years), some parameters that reflect leukocyte activation (elastase, myeloperoxidase - MPO), plasma NO metabolites (NO(x)) and the oxidative status (lipid peroxidation expressed as thiobarbituric acid-reactive substances (TBARS) and total antioxidant status (TAS). Elastase was determined, on plasma separated from fasting venous blood, as elastase/alpha1-proteinase inhibitor complex. MPO was evaluated employing the Myeloperoxidase ELISA kit. The NO production was evaluated by a micromethod. The oxidation of polyunsaturated fatty acids was evaluated in plasma by detection of the thiobarbituric acid-reactive substances (TBARS). Total antioxidant status was measured by spectrophotometry. We found a significant increase of elastase, TBARS and NO(x), without any significant variation of MPO and TAS. In this group of CRF subjects, no statistical correlation was found between these examined parameters, creatinine level, creatinine clearance, leukocyte count and hemoglobin level. These findings need to be underlined if we consider that chronic renal failure is an inflammatory condition and this research furtherly supports literature data regarding the role of activated leukocytes in the development of the vascular complications. These observations explain why the examination of leukocyte count and function could become a tool to verify the clinical outcome in these patients.
Dipartimento di Medicina Interna, Malattie Cardiovascolari e Nefrourologiche, Università degli Studi di Palermo, Palermo, Italy. caimigre@unipa.it
Gregorio
G
Caimi
Caterina
C
Carollo
Maria
M
Montana
Francesco
F
Vaccaro
Rosalia
R
Lo Presti
D000368:Aged; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D007676:Kidney Failure, Chronic / Q000097:blood* / Q000201:enzymology / Q000628:therapy*; D007962:Leukocytes / Q000201:enzymology / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D009569:Nitric Oxide / Q000097:blood; D018384:Oxidative Stress / Q000502:physiology*; D010196:Pancreatic Elastase / Q000097:blood*; D009195:Peroxidase / Q000097:blood*; D013053:Spectrophotometry; D017392:Thiobarbituric Acid Reactive Substances / Q000378:metabolism
D017392:Thiobarbituric Acid Reactive Substances; D009569:Nitric Oxide; D009195:Peroxidase; D010196:Pancreatic Elastase