Abstract：
BACKGROUND:Diamine oxidase (DAO) is a polyamine-degrading enzyme also implicated in histamine metabolism. Chronic urticaria (CU) has a wide spectrum of clinical presentations and causes. Anisakis sensitisation associated chronic urticaria (CU+) has been characterised as a phenotype with different clinical and immunological characteristics and possibly associated with previous acute parasitism. We aimed to analyse serum DAO levels in different CU phenotypes. We further analysed the possible association of DAO with fish eating habits. METHODS:We studied 35 CU+ patients and 39 non-sensitised CU patients (CU-) as well as 19 controls. We analysed fish-eating frequency as well as fish intake associated exacerbation of CU (FIAE) or gastro-intestinal complaints (GI). DAO levels were further analysed with respect to lymphoproliferative responses, cytokine and specific IgE production. RESULTS:DAO levels were not different between CU and controls, but were significantly higher in CU+ than in CU-. CU+ patients with FIAE had lower DAO levels, but no differences were detected in patients with GI. DAO levels correlated positively with oily and canned fish consumption in CU-. In CU+, DAO levels correlated positively with specific Anisakis IgE, percentages of proliferation in Anisakis stimulated peripheral blood lymphocytes, serum IL-2 and IL-6, but correlated negatively with mitogen stimulated TGF-β in supernatants. CONCLUSIONS:DAO levels in CU depend on fish-eating habits and in CU+ on the amount of specific IgE production. In the CU+ phenotype, lower levels of DAO predispose to urticaria exacerbation after fish intake, probably due to a relative insufficient enteric availability of this enzyme.
journal_name
Allergol Immunopathol (Madr)journal_title
Allergologia et immunopathologiaauthors
Daschner A,González-Fernández J,Valls A,de Frutos C,Rodero M,Cuéllar Cdoi
10.1016/j.aller.2015.01.009subject
Has Abstractpub_date
2015-11-01 00:00:00pages
593-600issue
6eissn
0301-0546issn
1578-1267pii
S0301-0546(15)00052-Xjournal_volume
43pub_type
杂志文章abstract：INTRODUCTION:Chronic granulomatous disease (CGD) is an uncommon primary immune deficiency (affecting 1/200,000 newborn infants) caused by a defect in phagocyte production of oxygen metabolites, and resulting in bacterial infections produced by catalase-positive microorganisms and fungal diseases that occasionally may p...
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