Genetic variation in the Cytb gene of human cerebral Taenia solium cysticerci recovered from clinically and radiologically heterogeneous patients with neurocysticercosis

Autor: Hector Palafox-Fonseca, Gerardo Zuniga, Raul Jose Bobes, Tzipe Govezensky, Daniel Pinero, Laura Texco-Martinez, Agnes Fleury, Jefferson Proano, Graciela Cardenas, Marisela Hernandez, Edda Sciutto, Gladis Fragoso
Jazyk: angličtina
Rok vydání: 2013
Předmět:
Zdroj: Memorias do Instituto Oswaldo Cruz, Vol 108, Iss 7, Pp 914-920 (2013)
Druh dokumentu: article
ISSN: 1678-8060
0074-0276
36761834
DOI: 10.1590/0074-0276130308
Popis: Neurocysticercosis (NC) is a clinically and radiologically heterogeneous parasitic disease caused by the establishment of larval Taenia solium in the human central nervous system. Host and/or parasite variations may be related to this observed heterogeneity. Genetic differences between pig and human-derived T. solium cysticerci have been reported previously. In this study, 28 cysticerci were surgically removed from 12 human NC patients, the mitochondrial gene that encodes cytochrome b was amplified from the cysticerci and genetic variations that may be related to NC heterogeneity were characterised. Nine different haplotypes (Ht), which were clustered in four haplogroups (Hg), were identified. Hg 3 and 4 exhibited a tendency to associate with age and gender, respectively. However, no significant associations were found between NC heterogeneity and the different T. solium cysticerci Ht or Hg. Parasite variants obtained from patients with similar NC clinical or radiological features were genetically closer than those found in groups of patients with a different NC profile when using the Mantel test. Overall, this study establishes the presence of genetic differences in the Cytb gene of T. solium isolated from human cysticerci and suggests that parasite variation could contribute to NC heterogeneity.
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