Abstract:
BACKGROUND:Matrix metalloproteinase (MMP)-9, an enzyme that contributes to inflammatory responses and subsequent tissue remodelling, has recently been suggested to be a good biomarker for monitoring disease activity in patients with chronic urticaria (CU). Here, we assessed whether total MMP-9 and/or active MMP-9 plasma levels are increased and correlated to disease activity in patients with CU. METHODS:Total MMP-9 and active MMP-9 plasma levels were determined by ELISA in 70 CU patients and control subjects (patients with psoriasis and healthy controls). CU activity was measured using weekly and daily composite symptom scores (urticaria activity score) calculated from the number of wheals and the intensity of pruritus. RESULTS:Significantly increased levels of total and active MMP-9 were detected in patients with CU as compared to healthy controls. Interestingly, patients with psoriasis also had clearly elevated plasma levels of total and active MMP-9, indicating that MMP-9 plasma levels do not specifically reflect CU activity. Most notably, total and active MMP-9 levels were not correlated with disease activity in CU or psoriasis patients. CONCLUSION:Plasma MMP-9 is not a good CU biomarker and should not be used for assessing the efficacy of treatment in CU patients or their spontaneous changes in disease activity.
journal_name
Allergyjournal_title
Allergyauthors
Altrichter S,Boodstein N,Maurer Mdoi
10.1111/j.1398-9995.2008.01799.xsubject
Has Abstractpub_date
2009-04-01 00:00:00pages
652-6issue
4eissn
0105-4538issn
1398-9995pii
ALL1799journal_volume
64pub_type
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