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Doctoral Thesis
DOI
https://doi.org/10.11606/T.42.2013.tde-07102013-090239
Document
Author
Full name
Isadora Maria Villas Boas Silva
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2013
Supervisor
Committee
Tambourgi, Denise Vilarinho (President)
Barbosa, Ângela Silva
Negro, Sonia Jancar
Portaro, Fernanda Calheta Vieira
Tavassi, Ana Marisa Chudzinski
 
Title in Portuguese
Caracterização biológica e imunoquímica da peçonha da lagarta de Premolis semirufa, agente etiológico da pararamose, doença ocupacional dos seringueiros da Amazônia.
Keywords in Portuguese
Anticorpos
Hidrólise
Imunologia celular
Lagartas
Sinovite animal
Toxinas
Venenos
Abstract in Portuguese
O contato com as cerdas da lagarta de Premolis semirufa (Pararama) desperta sintomas da inflamação aguda e nos indivíduos poliacidentados pode causar deformidades comuns às sinovites crônicas (pararamose). No presente estudo foi mostrado que o extrato das cerdas da lagarta apresenta intensa atividade proteolítica, sendo capaz de ativar o Sistema Complemento, promover hidrólise de C3, C4 e C5 e a geração de anafilatoxinas. Análises cromatográficas do extrato permitiram o isolamento de uma serinoprotease de 82 kDa capaz de promover tais atividades. Em modelo murino, foi verificado que o extrato é capaz de induzir altos títulos de anticorpos, pronunciada reação inflamatória, ativação de linfócitos T e APCs, bem como produção de citocinas pró-inflamatórias. Os dados obtidos demonstram a existência, no extrato das cerdas da pararama, de várias enzimas que podem atuar em conjunto na geração e desenvolvimento das manifestações clínicas da pararamose.
 
Title in English
Immunochemical and biological characterization of the venom from caterpillar Premolis semirufa, etiological agent of pararamose, occupational disease of rubber tappers in the Amazon.
Keywords in English
Antibodies
Caterpillars
Hydrolysis
Immunology cell
Poisons
Synovitis animal
Toxins
Abstract in English
The contact with the Premolis semirufas caterpillar bristles (Pararama) causes symptoms of the acute inflammation and, in the individuals after multiple accidents, joint deformities common to chronic synovitis (pararamose) can occur. In the current study it was shown that caterpillar bristles extract has intense proteolytic activity, being able to activate the Complement System, induce cleavage of C3, C4 and C5, and the generation of anaphylatoxins. Chromatographic analysis of the extract allowed the isolation of a serine protease with Mr of 82 kDa able to promote such activities. In murine model, it was demonstrated that the extract is able to induce high antibody titers, a pronounced inflammatory reaction, activation of T lymphocytes and APCs, as well as the generation of proinflammatory cytokines. The data obtained demonstrate the existence, in the pararama bristles extract, of numerous enzymes that can act together in the generation and development of clinical manifestations of pararamose.
 
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Publishing Date
2013-12-06
 
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