PMID- 11798051 OWN - NLM STAT- MEDLINE DCOM- 20020618 LR - 20190513 IS - 1369-3786 (Print) IS - 1369-3786 (Linking) VI - 39 IP - 6 DP - 2001 Dec TI - IgE antibody response to the main antigenic component of Paracoccidioides brasiliensis in patients with paracoccidioidomycosis. PG - 475-8 AB - Paracoccidioidomycosis (PCM) has two main clinical presentations, a chronic form (CF) and an acute, more severe form (AF). The AF is associated with a more marked dysfunction of the patient's immune response, and a distinct anti-Paracoccidioides brasiliensis immunoglobulin (Ig)A and IgG antibody subclass expression, compared with that seen in the CF. In this study we investigated the presence of IgE antibodies against the main P. brasiliensis antigen (a 43-kDa molecule) in the serum of PCM patients using an enzyme-linked immunosorbent assay. We found that 100% of the AF patients (n = 16) produced IgE antibodies, mostly at high levels, whereas only 9 (27%) out of 33 CF patients produced this isotype. Interestingly, these nine patients presented higher serological titers on the counter-immunoelectrophoresis assay than did those who did not produce IgE; a finding that suggests that they had a relatively more severe disease. As IgE is a characteristic feature of the AF patients, and switching to a positive IgE response is dependent on interleukin-4, our results support the notion that the relatively more severe impairment of cellular immunity in the AF is probably related to a Th-2 pattern of immune response. FAU - Biselli, P J AU - Biselli PJ AD - Laboratorio de Alergia e Imunologia Clinica e Experimental, Faculdade de Medicina do Universidade de Sao Paulo, Sao Paulo, Brazil. FAU - Juvenale, M AU - Juvenale M FAU - Mendes-Giannini, M J AU - Mendes-Giannini MJ FAU - Duarte, A J AU - Duarte AJ FAU - Benardi, G AU - Benardi G LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Med Mycol JT - Medical mycology JID - 9815835 RN - 0 (43 kDa protein, Paracoccidioides) RN - 0 (Antibodies, Fungal) RN - 0 (Antigens, Fungal) RN - 0 (Fungal Proteins) RN - 0 (Glycoproteins) RN - 0 (Immunoglobulin G) RN - 0 (Oligosaccharides) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Antibodies, Fungal/*blood MH - Antigens, Fungal/*immunology MH - *Fungal Proteins MH - Glycoproteins/*immunology MH - Humans MH - Immunoglobulin E/*blood MH - Immunoglobulin G/classification MH - Oligosaccharides/*immunology MH - Paracoccidioides/*immunology MH - Paracoccidioidomycosis/*immunology EDAT- 2002/01/19 10:00 MHDA- 2002/06/19 10:01 CRDT- 2002/01/19 10:00 PHST- 2002/01/19 10:00 [pubmed] PHST- 2002/06/19 10:01 [medline] PHST- 2002/01/19 10:00 [entrez] AID - 10.1080/mmy.39.6.475.478 [doi] PST - ppublish SO - Med Mycol. 2001 Dec;39(6):475-8. doi: 10.1080/mmy.39.6.475.478.