Title
Axonal swellings and spheroids: a new insight into the pathology of neurocysticercosis
Date Issued
01 May 2019
Access level
open access
Resource Type
journal article
Author(s)
Carter E.S.
Dávila-Villacorta D.G.
Castillo G.
Morales J.D.
Alroy J.
Sterling C.R.
Woltjer R.L.
Publisher(s)
Blackwell Publishing Ltd.
Abstract
Neurocysticercosis is a parasitic brain disease caused by the larval form (Cysticercus cellulosae) of Taenia solium and is the leading cause of preventable epilepsy worldwide. However, the pathophysiology and relation to the wide range of clinical features remains poorly understood. Axonal swelling is emerging as an important early pathological finding in multiple neurodegenerative diseases and as a cause of brain injury, but has not been well described in neurocysticercosis. Histological analysis was performed on human, rat and porcine NCC brain specimens to identify axonal pathology. Rat infection was successfully carried out via two routes of inoculation: direct intracranial injection and oral feeding. Extensive axonal swellings, in the form of spheroids, were observed in both humans and rats and to a lesser extent in pigs with NCC. Spheroids demonstrated increased immunoreactivity to amyloid precursor protein and neurofilament indicating probable impairment of axonal transport. These novel findings demonstrate that spheroids are present in NCC which is conserved across species. Not only is this an important contribution toward understanding the pathogenesis of NCC, but it also provides a model to analyze the association of spheroids with specific clinical features and to investigate the reversibility of spheroid formation with antihelminthic treatment.
Start page
425
End page
436
Volume
29
Issue
3
Language
English
OCDE Knowledge area
Neurociencias
Enfermedades infecciosas
Subjects
Scopus EID
2-s2.0-85058244121
PubMed ID
Source
Brain Pathology
ISSN of the container
1015-6305
Sponsor(s)
We are grateful to Dr. Diana Rivas, Head of the Department of Neuropathology of the Instituto Nacional de Ciencias Neurologicas in Lima, Peru; Carla Cangalaya, Casey Krebs, Homero Céliz, Ana Delgado, Cesar Quispe for their technical support in the rat model for neurocysticercosis as part of the Cysticercosis working group in Peru and, Dr. Armando Gonzalez for his help in obtaining samples for histological processing and Dr. Richard lerner. We would like to thank Michelle Beam, MPH, Oregon Health and Science University, for her help and advice in processing of human and porcine samples. This study was funded by Innovate Peru 135, PNP-PNIC-2015; Fondecyt-Convenio, No.118-2015; National Institutes of Health P30 AG008017; and National Institutes of Health D43 TW001140.
Sources of information:
Directorio de Producción Científica
Scopus