A rat model of neurocysticercosis-induced hydrocephalus: chronic progressive hydrocephalus with mild clinical impairment.

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ID: 25924
2019
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Abstract
Hydrocephalus is the most common complication of extraparenchymal neurocysticercosis, combining obstructive and inflammatory mechanisms that impair cerebrospinal fluid (CSF) circulation. We studied the long-term progression of neurocysticercosis-induced hydrocephalus in a rat model. We generated an experimental rat model of neurocysticercosis-induced hydrocephalus by cisternal inoculation of cysts or antigens of Taenia crassiceps and compared it with the classic model of kaolin-induced hydrocephalus. We used 52 animals divided into four groups: (1) control, (2) neurocysticercosis-induced hydrocephalus by cysts or (3) by antigens, and (4) kaolin-induced hydrocephalus. We studied behavioral, radiological, and morphological alterations at one and six months post-inoculation by open-field test, magnetic resonance imaging (MRI), and immunohistochemical localization of aquaporin-4 (AQP-4). Behavioral changes were observed much later in neurocysticercosis- than in kaolin-induced hydrocephalic rats (p = .023). The ventricular volume of hydrocephalus induced by experimental neurocysticercosis progressively evolved, with the MRI changes being similar to those observed in humans. Periventricular inflammatory and astrocytic reactions were also observed. AQP-4 expression was higher in the sixth than in the first month post-inoculation (p = .016) and also occurred in animals that received antigen inoculation but did not develop hydrocephalus, suggesting AQP-4 may constitute an alternative route of CSF absorption under inflammatory conditions. Our neurocysticercosis-induced hydrocephalus model allows for the long-term maintenance of hydrocephalic animals, involving mild clinical performance impairments, including body weight and behavioral changes.
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hamamoto-filho2019aworld Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Hamamoto Filho, Pedro Tadao;Fogaroli, Marcelo Ortolani;Chiantelli de Oliveira, Marcelo Augusto;Oliveira, Cristiano Claudino;Batah, Sabrina Setembre;Fabro, Alexandre Todorovic;Vulcano, Luiz Carlos;Bazan, Rodrigo;Zanini, Marco Antônio;
Journal world neurosurgery
Year 2019
DOI
S1878-8750(19)32241-7
URL
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