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Master's Dissertation
DOI
https://doi.org/10.11606/D.42.2018.tde-19022018-135515
Document
Author
Full name
Jennifer Rocha Rodrigues
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2017
Supervisor
Committee
Munhoz, Carolina Demarchi (President)
Fernandes, Pedro Augusto Carlos Magno
Lima, Wothan Tavares de
Title in Portuguese
Papel do GPER na melhora da neuroinflamação no modelo de encefalomielite autoimune experimental em camundongos fêmeas C57B1/6: participação dos astrócitos.
Keywords in Portuguese
Astrócitos
Encefalomielite autoimune experimental
Neuroinflamação
Receptor de estrógeno acoplado a proteína G (GPER)
Abstract in Portuguese
Encefalomielite Autoimune Experimental (EAE) é um modelo animal para o estudo da Esclerose Múltipla, doença autoimune na qual células do sistema imune atacam a bainha de mielina e os oligodendrócitos, levando a desmielinização, perda axonal e morte neuronal. Astrócitos são importantes na doença e na modulação da neuroinflamação. O estrógeno apresenta ação protetora, porém a ação via receptor acoplado a proteína G (GPER) é pouco conhecido. Como GPER está presente nos astrócitos, o objetivo deste projeto foi verificar se o tratamento com G1 (agonista seletivo de GPER) seria capaz de modular o processo inflamatório presente no SNC. O tratamento com o G1 (3mg/Kg, via subcutânea, durante três dias, iniciando no 5º dia após a indução da EAE) atenuou o escore clínico no pico da doença e alterou a morfologia dos astrócitos da medula espinhal, tanto na substância branca como na cinzenta, sugerindo um efeito anti-inflamatório do G1. Estudos subsequentes in vitro foram feitos para tentar elucidar possíveis vias de ativação relacionadas ao GPER.
Title in English
Role of GPER in the improvement of neuroinflammation in the experimental autoimmune encephalomyelitis in female mice C57bl/6: involvement of astrocytes.
Keywords in English
Astrocytes
Experimental autoimmune encephalomyelitis
G-coupled protein estrogen receptor (GPER)
Neuroinflammation
Abstract in English
Experimental autoimmune encephalomyelitis (EAE) is an animal model for the study of Multiple Sclerosis, an autoimmune disease in which cells of the immune system attack the myelin sheath and oligodendrocytes, leading to demyelination, axonal loss, and neuronal death. Astrocytes are important in disease and modulation of neuroinflammation. Estrogen has protective action, but the action by G protein-coupled estrogen receptor (GPER) is little known. GPER is present in astrocytes, the objective of this project was to verify if treatment with G1 (selective agonist of GPER) would be able to modulate the inflammatory process present in the CNS. Treatment with G1 (3 mg / kg, subcutaneously for three days, beginning on the 5th day after EAE induction) attenuated the clinical score at the peak of the disease and altered the morphology of the spinal cord astrocytes both in white matter and Suggesting an anti-inflammatory effect of G1. Subsequent in vitro studies have been done to try to elucidate possible pathways of activation related to GPER.
 
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Publishing Date
2018-02-19
 
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