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Master's Dissertation
DOI
https://doi.org/10.11606/D.87.2016.tde-04122015-182240
Document
Author
Full name
Marina Yukari Kubota
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2015
Supervisor
Committee
Martins, Elizabeth Angelica Leme (President)
Quintilio, Wagner
Silva, Josefa Bezerra da
Title in Portuguese
Avaliação de MPLA como adjuvante em formulações vacinais contra leptospirose.
Keywords in Portuguese
L. interrogans
S. enterica
Adjuvante
LigA
LPS
MPLA
OmpA
Abstract in Portuguese
Lipopolissacarídeos (LPS) de L. interrogans, S. enterica e B. pertussis foram extraídos e as subfrações monofosforil lipídeo A (MPLA) preparadas por hidrólise. O LPS é responsável por forte resposta imunológica e endotóxica em mamíferos, enquanto o MPLA apresenta baixa endotoxicidade e boa capacidade imunomoduladora. Estudamos a atividade adjuvante de LPS e de MPLA em formulações com antígenos LigA ou OmpA contra leptospirose. Testes de imunização e desafio em hamsters confirmaram alta atividade imunoprotetora de LigA e capacidade adjuvante do MPLA de salmonela e de LPS de leptospiras, mas as formulações não foram capazes de bloquear a colonização renal na leptospirose. Os resultados sugerem diferenças na imunidade protetora sistêmica da imunidade protetora renal.
Title in English
Avaliation of MPLA as adjuvant in vaccine formulation against leptospirosis.
Keywords in English
L. interrogans
S. enterica
adjuvant
LigA
LPS
MPLA
OmpA
Abstract in English
Lipopolysaccharides (LPS) of L. interrogans, S. enterica and B. pertussis were extracted and the subfraction monophosphoril lipid A (MPLA) prepared by hydrolysis. The LPS is responsible for immunological response and endotoxicity in mammallians, while MPLA has reduced endotoxic activity, but maintain the immunomodulatory capacity. We studied the adjuvant capacity of LPS and MPLA in formulations with LigA or OmpA antigens against leptospirosis. Tests of immunization and challenge in hamsters confirmed the high immune protection activity of LigA and adjuvant capacity of MPLA of salmonela and LPS of lepstopiras, however formulations did not block the renal colonization. The results suggest that there are differences in the systemic immune protection from the kidney immune protection.
 
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Publishing Date
2016-03-14
 
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