Toxoplasma gondii: myenteric neurons of intraperitoneally inoculated rats show quantitative and morphometric alterations |
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| Authors: | Silva Lilia Simeire Sartori Ana Lúcia Zaniolo Larissa Marchi da Silva Aristeu Vieira Sant'Ana Débora de Mello Gonçales Araújo Eduardo José de Almeida |
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| Institution: | aInstituto de Pesquisa Estudos e Ambiência Científica (IPEAC), Universidade Paranaense (UNIPAR), Umuarama, Paraná, Brazil;bInstituto de Ciências da Saúde, Universidade Federal do Mato Grosso, Sinop, Mato Grosso, Brazil;cDepartamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Feira de Santana, Bahia, Brazil;dDepartamento de Histologia, Universidade Estadual de Londrina, Londrina, Paraná, Brazil |
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| Abstract: | Several studies have demonstrated that the myenteric plexus experiences quantitative and morphometric changes in rats inoculated orally with Toxoplasma gondii. This paper aims to verify if these alterations are also seen when the same animals are inoculated intraperitoneally with the parasite. In order to do that, six Wistar rats (Rattus norvegicus) 60 days of age were infected intraperitoneally with 106 tachyzoites of a genotype I T. gondii strain (BTU IV). After 60 days, the animals were anaesthetised and underwent laparotomy. All organs from the small and large intestines were removed, measured, dissected and underwent whole-mount Giemsa technique to stain the neurons in the myenteric plexus. A quantitative and morphometric analysis of these cells was made, and it showed that the parasite causes the death of myenteric neurons in the jejunum and morphometric alterations in these cells throughout the intestine. However, the cellular response of myenteric neurons to T. gondii is heterogeneous compared the different organs from the gut. |
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| Keywords: | Toxoplasmosis Enteric Nervous System Gut Myenteric plexus Infection Inflammation |
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