CC BY-NC-ND 4.0 · Arq Neuropsiquiatr 2018; 76(05): 339-345
DOI: 10.1590/0004-282X20180032
Article

Histopathologic aspects of experimental cysticercosis and in situ cytokines profile in C57BL/6 mice

Aspectos histopatológicos da cisticercose experimental e perfil de citocinas in situ em camundongos C57BL/6
Anália Cirqueira Milhomem
1   Universidade Federal de Goiás, Instituto de Saúde Pública, Patologia Tropical, Goiânia GO, Brasil;
,
Amanda Juliana Soaris de Souza
1   Universidade Federal de Goiás, Instituto de Saúde Pública, Patologia Tropical, Goiânia GO, Brasil;
,
Hidelberto Matos Silva
2   Centro Universitário Gurupi, Faculdade de Medicina, Gurupi TO, Brasil
,
Marina Clare Vinaud
1   Universidade Federal de Goiás, Instituto de Saúde Pública, Patologia Tropical, Goiânia GO, Brasil;
,
Milton Adriano Pelli de Oliveira
1   Universidade Federal de Goiás, Instituto de Saúde Pública, Patologia Tropical, Goiânia GO, Brasil;
,
Juliana Reis Machado
1   Universidade Federal de Goiás, Instituto de Saúde Pública, Patologia Tropical, Goiânia GO, Brasil;
,
Ruy de Souza Lino Júnior
1   Universidade Federal de Goiás, Instituto de Saúde Pública, Patologia Tropical, Goiânia GO, Brasil;
› Author Affiliations
CNPq grant number 471243/2013-2

ABSTRACT

Neurocysticercosis (NCC) is one of the parasitic infections that most affects the central nervous system. The knowledge regarding its immunopathogenesis and pathophysiology needs broadening. Taenia crassiceps cysticerci are used as the NCC experimental model. The aim of this work was to describe the general pathological processes and the in situ cytokine profile in C57BL/6 mice inoculated intracranially with viable T. crassiceps cysticerci. The histopathology analysis showed cysticerci in the extraparenchymal and intraventricular region, mononuclear inflammatory infiltration surrounding the parasite, microgliosis and meningitis. The analysis of the in situ immune profiles showed a predominance of the Th2 response. The IL-4 and IL-10 dosages were significantly increased in the infected group. The decrease in the INF-gamma dosage reflects the immunomodulation from the cysticerci. In conclusion, a T. crassiceps NCC infection in C57BL/6 mice triggers an inflammatory response, a predominance of Th2 type in situ profile, with mononuclear inflammatory cell infiltration, meningitis and microgliosis.

RESUMO

Neurocisticercose (NCC) é uma das doenças parasitárias que mais afeta o sistema nervoso central. É necessário aprofundar o conhecimento em relação à sua imunopatogênese e patofisiologia. Os cisticercos de Taenia crassiceps são utilizados como modelo experimental para estudos da NCC. O objetivo deste trabalho foi descrever os processos patológicos gerais e o perfil de citocinas in situ em camundongos C57BL/6 inoculados via intracerebral com cisticercos viáveis de T. crassiceps. A análise histopatológica demonstrou cisticercos nas regiões extra-parenquimatosa e intraventricular, infiltrado inflamatório de células mononucleares ao redor do parasita, microgliose e meningite. A análise in situ do perfil de citocinas mostrou uma predominância da resposta Th2. As dosagens de IL-4 e IL-10 foram significativamente maiores no grupo infectado. Conclui-se que a NCC por T. crassiceps em camundongos C57BL/6 induz uma resposta inflamatória com predominância in situ de citocinas do perfil Th2, com infiltrado inflamatório de células mononucleares, meningite e microgliose.

Support

CNPq grant number 471243/2013-2




Publication History

Received: 02 October 2017

Accepted: 31 January 2018

Article published online:
25 August 2023

© 2023. Academia Brasileira de Neurologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commecial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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