Follow‐up of anti‐Aspergillus IgG and IgA antibodies in bone marrow transplanted patients with invasive aspergillosis

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Abstract
A total of 89 patients at risk for, or with invasive aspergillosis (IA) were recruited from bone marrow transplantation (BMT) units in two Lisbon hospitals, and followed for 2½ years to monitor their immune response. Of these patients, six developed probable IA, from which five died. The presence of serum IgG or IgA antibodies against seven Aspergillus recombinant antigens was assessed in patients with IA, using an enzyme‐linked immunosorbent assay (ELISA). In parallel, the serum levels of galactomannan (GM) were also monitored, using the Platelia Aspergillus kit (Sanofi Pasteur, Marnes‐la‐Coquette, France). Superoxide dismutase (Sod) and 94 kDa were the most immunogenic antigens for IgA, while the IgG pattern of recognition changed from patient to patient. From our results we conclude that although follow‐up of antibodies against these antigens should not be used as a diagnostic method, patients with IA do produce an immune response that may influence disease outcome. J. Clin. Lab. Anal. 16:156–162, 2002.

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