Abstract:
:In this study we investigated the possible role of neutrophil (PMN) elastase and its natural inhibitor, alpha1-proteinase inhibitor (alpha1-PI) in the pathogenesis of the pseudoxanthoma elasticum (PXE)-like syndrome which is found in patients with homozygous beta-thalassemia. We studied 30 beta-thalassemia homozygotes with the PXE-like syndrome [PXE(+) group], 20 beta-thalassemia homozygotes without this syndrome [PXE(-) group] and 15 healthy controls. Plasma PMN elastase concentration in the PXE(+) and in the PXE(-) group was 136.4 +/- 89 and 163.8 +/- 126 microg/L, respectively (P > 0.05). In the control group, the concentration was 42.9 +/- 16.8 microg/L (P < 0.01 for the comparison with both patients' groups). The plasma alpha1-PI concentration in the PXE(+) and in the PXE(-) group was 2.28 +/- 0.75 and 2.6 +/- 0.96 g/L, respectively (P > 0.05). Using logistic regression, we studied the prognostic value for PXE of the following independent variables: number of transfusions, chelation therapy, mean hemoglobin concentration, PMN elastase concentration, alpha1-PI concentration, chronic transaminase elevation, and positivity for anti-HCV. None of the above variables was found to have significant prognostic value for the PXE. Plasma PMN elastase concentration is elevated in all beta-thalassemia homozygotes; its role in the pathogenesis of the PXE-like syndrome in beta-thalassemia can not be established, but our findings suggest that neutrophils of beta-thalassemia patients are activated, since PMN elastase is a marker of neutrophil activation.
journal_name
Am J Hematoljournal_title
American journal of hematologyauthors
Samarkos M,Aessopos A,Fragodimitri C,Karagiorga M,Kalotychou V,Voskaridou E,Kavouklis E,Loukopoulos Ddoi
10.1002/(sici)1096-8652(200002)63:2<63::aid-ajh1>3keywords:
subject
Has Abstractpub_date
2000-02-01 00:00:00pages
63-7issue
2eissn
0361-8609issn
1096-8652pii
10.1002/(SICI)1096-8652(200002)63:2<63::AID-AJH1>3journal_volume
63pub_type
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