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Circulating levels of mannan-binding lectin (MBL) and MBL-associated serine protease 2 in endemic pemphigus foliaceus

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Endemic pemphigus foliaceus (EPF) is an autoimmune disease, which occurs in Brazil and other regions of South America. Mannose-binding lectin (MBL) and MBL-associated serine protease (MASP-2) play a key role in innate immunity, and its deficiency has been related to increased susceptibility to infection and autoimmune diseases. MBL and MASP-2 serum levels were measured in 114 patients with EPF and in 100 healthy individuals in Brazil. MBL and MASP-2 levels were measured by sandwich assays (time-resolved immunofluorimetic assay) using monoclonal antibodies. No difference was observed in the MBL level in patients with EPF compared with controls [mean +/- SEM 1230.07 +/- 132.18 ng/mL (median 789.0 ng/mL) vs. 1036.98 +/- 117.99 ng/mL (median 559.5 ng/mL), P = 0.32]. Non-significant lower MASP-2 levels were observed in EPF [274.34 +/- 15.66 ng/mL (median 239.5 ng/mL ) vs. 304.72 +/- 15.28 ng/mL [median 261.0 ng/mL ), P = 0.06]. MBL deficiency (<10 ng/mL) or MASP-2 deficiency (<100 ng/mL) did not differ significantly between patients and controls. These data indicate that MBL and MASP-2 deficiency are not associated with susceptibility to EPF.
Original languageEnglish
Book seriesClinical and Experimental Dermatology. Supplement
Pages (from-to)495-7
Number of pages3
Publication statusPublished - 2008

    Research areas

  • Adolescent, Adult, Aged, Aged, 80 and over, Child, Complement Pathway, Classical, Female, Genotype, Humans, Male, Mannose-Binding Lectin, Mannose-Binding Protein-Associated Serine Proteases, Middle Aged, Pemphigus

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