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Heterophilic antibodies in sera from individuals without loxoscelism cross-react with phospholipase D from the venom of Loxosceles and Sicarius spiders J. Venom. Anim. Toxins incl. Trop. Dis.
Arán-Sekul,Tomás; Rojas,José M.; Subiabre,Mario; Cruz,Victoria; Cortés,William; Osorio,Luis; González,Jorge; Araya,Jorge E.; Catalán,Alejandro.
Abstract Background Loxoscelism is a severe human envenomation caused by Loxosceles spider venom. To the best of our knowledge, no study has evaluated the presence of antibodies against Loxosceles venom in loxoscelism patients without treatment with antivenom immunotherapy. We perform a comparative analysis for the presence of antibodies capable of recognizing Loxosceles venom in a group of patients diagnosed with loxoscelism and in a group of people without loxoscelism. Methods The detection of L. laeta venom, Sicarius venom and recombinant phospholipases D from Loxosceles (PLDs) in sera from people with loxoscelism (Group 1) and from healthy people with no history of loxoscelism (Group 2) was evaluated using immuno-dot blot, indirect ELISA, and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Loxosceles laeta; Heterophilic antibodies; Natural antibodies; Sicarius.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992018000100311
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Natural antibodies in paracoccidioidomycosis BJM
Unterkircher,Carmelinda S.; Leão,Mariella V.P.; Blotta,Maria Heloisa S.L.; Camargo,Zoilo Pires de.
Recent attention has been focused on the natural antibodies as a component of natural immunity and as integral part of the idiotypic network. However, their functional role in different infections has rarely been studied. This work was undertaken to investigate the presence of natural antibodies in paracoccidioidomycosis (PCM). In addition, we analyzed anti-P. brasiliensis antibodies and their distribution in IgG subclasses in order to acquire better knowledge about the humoral immune response in this mycosis. Our findings show that the natural antibody response is not very much increased in PCM when compared with other parasite infections and this response is restricted to a few specificities, suggesting that P. brasiliensis moderately triggers CD5+ B...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Natural antibodies; Paracoccidioides brasiliensis; Paracoccidioidomycosis.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000100009
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