TY - JOUR
T1 - Toxocara brain infection in pigs is not associated with visible lesions on brain magnetic resonance imaging
AU - Nicoletti, Alessandra
AU - Gomez-Puerta, Luis A.
AU - Arroyo, Gianfranco
AU - Bustos, Javier
AU - Gonzalez, Armando E.
AU - Garcia, Hector H.
N1 - Publisher Copyright:
Copyright © 2020 by The American Society of Tropical Medicine and Hygiene.
PY - 2020/7
Y1 - 2020/7
N2 - Human exposure to Toxocara spp. is very frequent, and its larvae can cross the blood–brain barrier and invade the central nervous system (CNS), causing neurotoxocariasis. We aimed to establish a neurotoxocariasis animal model in pigs confirmed by necropsy. Also, the presence of larvae in the CNS was assessed using magnetic resonance imagings (MRIs), to establish brain lesions caused by the larvae migration. Ten pigs were infected intraperitoneally with 3,000 Toxocara larvae. Cerebral toxocariasis was evaluated using MRIs at days 7, 14, 21, and 49, and pigs were euthanized after the examination. Brain tissues were examined by microscopy, and five pigs presented Toxocara, most frequently at day 21 after infection. None of the 10 pigs showed alterations on MRIs. Our study confirms that intraperitoneal Toxocara infection produces neurotoxocariasis in pigs. Toxocara larvae passage through the brain does not seem to produce lesions detectable at MRIs.
AB - Human exposure to Toxocara spp. is very frequent, and its larvae can cross the blood–brain barrier and invade the central nervous system (CNS), causing neurotoxocariasis. We aimed to establish a neurotoxocariasis animal model in pigs confirmed by necropsy. Also, the presence of larvae in the CNS was assessed using magnetic resonance imagings (MRIs), to establish brain lesions caused by the larvae migration. Ten pigs were infected intraperitoneally with 3,000 Toxocara larvae. Cerebral toxocariasis was evaluated using MRIs at days 7, 14, 21, and 49, and pigs were euthanized after the examination. Brain tissues were examined by microscopy, and five pigs presented Toxocara, most frequently at day 21 after infection. None of the 10 pigs showed alterations on MRIs. Our study confirms that intraperitoneal Toxocara infection produces neurotoxocariasis in pigs. Toxocara larvae passage through the brain does not seem to produce lesions detectable at MRIs.
UR - http://www.scopus.com/inward/record.url?scp=85088202706&partnerID=8YFLogxK
U2 - 10.4269/ajtmh.19-0912
DO - 10.4269/ajtmh.19-0912
M3 - Artículo
C2 - 32431279
AN - SCOPUS:85088202706
SN - 0002-9637
VL - 103
SP - 273
EP - 275
JO - American Journal of Tropical Medicine and Hygiene
JF - American Journal of Tropical Medicine and Hygiene
IS - 1
ER -